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class="profile-avatar u-positionAbsolute" alt="UGUR YAHSI" border="0" onerror="if (this.src != '//a.academia-assets.com/images/s200_no_pic.png') this.src = '//a.academia-assets.com/images/s200_no_pic.png';" width="200" height="200" src="https://0.academia-photos.com/51900448/13863314/103211707/s200_ugur.yahsi.jpg" /></div><div class="title-container"><h1 class="ds2-5-heading-sans-serif-sm">UGUR YAHSI</h1><div class="affiliations-container fake-truncate js-profile-affiliations"><div><a class="u-tcGrayDarker" href="https://marmara.academia.edu/">Marmara University</a>, <a class="u-tcGrayDarker" href="https://marmara.academia.edu/Departments/Physics/Documents">Physics</a>, <span class="u-tcGrayDarker">Faculty Member</span></div></div></div></div><div class="sidebar-cta-container"><button class="ds2-5-button hidden profile-cta-button grow js-profile-follow-button" data-broccoli-component="user-info.follow-button" data-click-track="profile-user-info-follow-button" 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data-broccoli-component="user-info.coauthors-count" data-click-track="profile-expand-user-info-coauthors"><p class="label">Co-authors</p><p class="data">12</p></div></a><a href="/UYAHSI/mentions"><div class="stat-container"><p class="label">Mentions</p><p class="data">198</p></div></a><span><div class="stat-container"><p class="label"><span class="js-profile-total-view-text">Public Views</span></p><p class="data"><span class="js-profile-view-count"></span></p></div></span></div></div></div><div class="right-panel-container"><div class="user-content-wrapper"><div class="uploads-container" id="social-redesign-work-container"><div class="upload-header"><h2 class="ds2-5-heading-sans-serif-xs">Uploads</h2></div><div class="documents-container backbone-social-profile-documents" style="width: 100%;"><div class="u-taCenter"></div><div class="profile--tab_content_container js-tab-pane tab-pane active" id="all"><div class="profile--tab_heading_container js-section-heading" data-section="Papers" id="Papers"><h3 class="profile--tab_heading_container">Papers by UGUR YAHSI</h3></div><div class="js-work-strip profile--work_container" data-work-id="113646454"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/113646454/Effects_of_sintering_and_zirconmullite_doping_on_nanostructural_vacancies_of_bovine_hydroxyapatite_by_positron_techniques"><img alt="Research paper thumbnail of Effects of sintering and zirconmullite doping on nanostructural vacancies of bovine hydroxyapatite by positron techniques" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/113646454/Effects_of_sintering_and_zirconmullite_doping_on_nanostructural_vacancies_of_bovine_hydroxyapatite_by_positron_techniques">Effects of sintering and zirconmullite doping on nanostructural vacancies of bovine hydroxyapatite by positron techniques</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/NAKTI">Necmettin Aktı</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/UYAHSI">UGUR YAHSI</a></span></div><div class="wp-workCard_item"><span>Journal of the American Ceramic Society</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">In this study, the nanostructural vacancy behavior of bovine derived hydroxyapatite (BHA) doped w...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">In this study, the nanostructural vacancy behavior of bovine derived hydroxyapatite (BHA) doped with powder zirconmullite (ZM) contents of 5, 7.5, 10 and 12.5 wt.% were presented at sintering temperatures of 1000, 1100, 1200 and 1300°C. ZM‐doped BHA (ZM‐BHA) was characterized by X‐ray diffraction and positron annihilation lifetime spectroscopy (PALS). Density and hardness behavior were measured with respect to increasing sintering temperature. PALS results indicate that the longest lifetime component τ3 of ortho‐positronium (o‐Ps) localized at open spaces is attributed to the vacancy site and almost constant with the ZM contents and the sintering temperatures to have a mean value of 0.680 ns (corresponding to the radius of 0.997 nm). This average value is ascribed to the OH group defects along the main crystalline line. On the other hand, the o‐Ps intensity attributed to the number of vacancy sites increases almost linearly with ZM additives and sintering temperatures. The intensity...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="113646454"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="113646454"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 113646454; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=113646454]").text(description); $(".js-view-count[data-work-id=113646454]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 113646454; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='113646454']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 113646454, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=113646454]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":113646454,"title":"Effects of sintering and zirconmullite doping on nanostructural vacancies of bovine hydroxyapatite by positron techniques","translated_title":"","metadata":{"abstract":"In this study, the nanostructural vacancy behavior of bovine derived hydroxyapatite (BHA) doped with powder zirconmullite (ZM) contents of 5, 7.5, 10 and 12.5 wt.% were presented at sintering temperatures of 1000, 1100, 1200 and 1300°C. ZM‐doped BHA (ZM‐BHA) was characterized by X‐ray diffraction and positron annihilation lifetime spectroscopy (PALS). Density and hardness behavior were measured with respect to increasing sintering temperature. PALS results indicate that the longest lifetime component τ3 of ortho‐positronium (o‐Ps) localized at open spaces is attributed to the vacancy site and almost constant with the ZM contents and the sintering temperatures to have a mean value of 0.680 ns (corresponding to the radius of 0.997 nm). This average value is ascribed to the OH group defects along the main crystalline line. On the other hand, the o‐Ps intensity attributed to the number of vacancy sites increases almost linearly with ZM additives and sintering temperatures. The intensity...","publisher":"Wiley","publication_name":"Journal of the American Ceramic Society"},"translated_abstract":"In this study, the nanostructural vacancy behavior of bovine derived hydroxyapatite (BHA) doped with powder zirconmullite (ZM) contents of 5, 7.5, 10 and 12.5 wt.% were presented at sintering temperatures of 1000, 1100, 1200 and 1300°C. ZM‐doped BHA (ZM‐BHA) was characterized by X‐ray diffraction and positron annihilation lifetime spectroscopy (PALS). Density and hardness behavior were measured with respect to increasing sintering temperature. PALS results indicate that the longest lifetime component τ3 of ortho‐positronium (o‐Ps) localized at open spaces is attributed to the vacancy site and almost constant with the ZM contents and the sintering temperatures to have a mean value of 0.680 ns (corresponding to the radius of 0.997 nm). This average value is ascribed to the OH group defects along the main crystalline line. On the other hand, the o‐Ps intensity attributed to the number of vacancy sites increases almost linearly with ZM additives and sintering temperatures. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="114758705"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/114758705/The_Effect_of_Hole_Fraction_on_Viscosity_in_Atactic_and_Syndiotactic_Polystyrenes"><img alt="Research paper thumbnail of The Effect of Hole Fraction on Viscosity in Atactic and Syndiotactic Polystyrenes" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/114758705/The_Effect_of_Hole_Fraction_on_Viscosity_in_Atactic_and_Syndiotactic_Polystyrenes">The Effect of Hole Fraction on Viscosity in Atactic and Syndiotactic Polystyrenes</a></div><div class="wp-workCard_item"><span>International Journal of Thermophysics</span><span>, Nov 1, 2015</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The non-Newtonian viscosity behavior of atactic and syndiotactic polystyrenes (aPS and sPS), at t...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The non-Newtonian viscosity behavior of atactic and syndiotactic polystyrenes (aPS and sPS), at temperatures from $$200\,{}^{\circ }\hbox {C}$$200∘C to $$300\,{}^{\circ }\hbox {C}$$300∘C and pressures up to 30 MPa, was studied using the recently proposed Yahsi–Dinc–Tav model, in particular, the Cross-like model. Viscosity data with shear rates of $$0.01\,\hbox {s}^{-1}$$0.01s-1 to $$5000\,\hbox {s}^{-1}$$5000s-1 were taken from literature at ambient pressure and were reproduced from the Cross-Vogel model at elevated pressures. The viscosities were predicted using the Yahsi–Dinc–Tav model with average absolute deviations of 4.37 % at ambient pressure and 9.63 % at high pressures for aPS and 2.54 % at ambient pressure and 4.79 % at high pressures for sPS. We extended this work to relate the zero shear and the constant shear rate viscosities in terms of the temperature- and pressure-dependent hole fraction using the thermo-occupancy function. The hole fraction (h) was computed from Simha–Somcynsky hole theory. Analytical relationships of specific density and hole fraction in terms of scaled temperature and pressure were constructed for practical purposes. The effects of tacticity of polystyrenes were discussed in terms of the thermo-occupancy function in detail. In particular, the derivative of the logarithm of the viscosities (viscoholibility) was found to decrease with an increasing hole fraction.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="114758705"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="114758705"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 114758705; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=114758705]").text(description); $(".js-view-count[data-work-id=114758705]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 114758705; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='114758705']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 114758705, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=114758705]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":114758705,"title":"The Effect of Hole Fraction on Viscosity in Atactic and Syndiotactic Polystyrenes","translated_title":"","metadata":{"abstract":"The non-Newtonian viscosity behavior of atactic and syndiotactic polystyrenes (aPS and sPS), at temperatures from $$200\\,{}^{\\circ }\\hbox {C}$$200∘C to $$300\\,{}^{\\circ }\\hbox {C}$$300∘C and pressures up to 30 MPa, was studied using the recently proposed Yahsi–Dinc–Tav model, in particular, the Cross-like model. Viscosity data with shear rates of $$0.01\\,\\hbox {s}^{-1}$$0.01s-1 to $$5000\\,\\hbox {s}^{-1}$$5000s-1 were taken from literature at ambient pressure and were reproduced from the Cross-Vogel model at elevated pressures. The viscosities were predicted using the Yahsi–Dinc–Tav model with average absolute deviations of 4.37 % at ambient pressure and 9.63 % at high pressures for aPS and 2.54 % at ambient pressure and 4.79 % at high pressures for sPS. We extended this work to relate the zero shear and the constant shear rate viscosities in terms of the temperature- and pressure-dependent hole fraction using the thermo-occupancy function. The hole fraction (h) was computed from Simha–Somcynsky hole theory. Analytical relationships of specific density and hole fraction in terms of scaled temperature and pressure were constructed for practical purposes. The effects of tacticity of polystyrenes were discussed in terms of the thermo-occupancy function in detail. 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The viscosities were predicted using the Yahsi–Dinc–Tav model with average absolute deviations of 4.37 % at ambient pressure and 9.63 % at high pressures for aPS and 2.54 % at ambient pressure and 4.79 % at high pressures for sPS. We extended this work to relate the zero shear and the constant shear rate viscosities in terms of the temperature- and pressure-dependent hole fraction using the thermo-occupancy function. The hole fraction (h) was computed from Simha–Somcynsky hole theory. Analytical relationships of specific density and hole fraction in terms of scaled temperature and pressure were constructed for practical purposes. The effects of tacticity of polystyrenes were discussed in terms of the thermo-occupancy function in detail. In particular, the derivative of the logarithm of the viscosities (viscoholibility) was found to decrease with an increasing hole fraction.","internal_url":"https://www.academia.edu/114758705/The_Effect_of_Hole_Fraction_on_Viscosity_in_Atactic_and_Syndiotactic_Polystyrenes","translated_internal_url":"","created_at":"2024-02-11T07:06:00.683-08:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":51900448,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"The_Effect_of_Hole_Fraction_on_Viscosity_in_Atactic_and_Syndiotactic_Polystyrenes","translated_slug":"","page_count":null,"language":"en","content_type":"Work","owner":{"id":51900448,"first_name":"UGUR","middle_initials":null,"last_name":"YAHSI","page_name":"UYAHSI","domain_name":"marmara","created_at":"2016-08-10T02:31:12.230-07:00","display_name":"UGUR 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Elongational Viscosity in Polymer Melts</a></div><div class="wp-workCard_item"><span>Advances in Polymer Technology</span><span>, May 2, 2019</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="3a0745da99822eb00ce8e10051530fe6" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":111367605,"asset_id":114758704,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/111367605/download_file?st=MTczMjQwNjE3Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="114758704"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa 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1995</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">We have analysed the equation of states (eos) data for five series of compounds in terms of the S...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">We have analysed the equation of states (eos) data for five series of compounds in terms of the Simha-Somcynsky hole theory and, in this manner, obtained graph-averaged temperature, volume and pressure scaling parameters. The eos data were obtained some time ago, when ...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="114758703"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="114758703"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 114758703; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=114758703]").text(description); $(".js-view-count[data-work-id=114758703]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 114758703; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='114758703']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 114758703, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=114758703]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":114758703,"title":"Statistical thermodynamics of hydrocarbon fluids: scaling parameters and their group contributions","translated_title":"","metadata":{"abstract":"We have analysed the equation of states (eos) data for five series of compounds in terms of the Simha-Somcynsky hole theory and, in this manner, obtained graph-averaged temperature, volume and pressure scaling parameters. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="114758701"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/114758701/Detailed_investigation_on_the_insulation_and_permeability_characteristics_of_rigid_polyurethane_foam_loaded_with_micron_sized_Turkey_feather_powder_depending_on_the_free_volume_change"><img alt="Research paper thumbnail of Detailed investigation on the insulation and permeability characteristics of rigid polyurethane foam loaded with micron-sized Turkey feather powder depending on the free volume change" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/114758701/Detailed_investigation_on_the_insulation_and_permeability_characteristics_of_rigid_polyurethane_foam_loaded_with_micron_sized_Turkey_feather_powder_depending_on_the_free_volume_change">Detailed investigation on the insulation and permeability characteristics of rigid polyurethane foam loaded with micron-sized Turkey feather powder depending on the free volume change</a></div><div class="wp-workCard_item"><span>Cellular Polymers</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This study brokes new ground to understand the insulation and permeability performances of rigid ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This study brokes new ground to understand the insulation and permeability performances of rigid polyurethane foams (RPUFs) containing the different contents of micron-sized turkey feather powders (TFPs) depending on the free volume change for the first time. The effects of TFPs loading on the RPUFs were investigated by the examination of their structural and chemical features (particle size and ATR-FTIR analyses), free volume property (PALS analysis), insulation features (thermal conductivity and sound absorption tests), permeability performance (air and water vapor permeability tests) and cellular topology (SEM). PALS analysis results revealed that the addition of TFPs into the foams led to the sharp decrease in all free volume parameters since TFPs caused the formation of the disordered cells by occupying the holes in the matrix. Furthermore, both thermal conductivity and acoustic performance of the resulting foams get worse when compared to unfilled RPUF. This results were attri...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="114758701"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="114758701"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 114758701; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=114758701]").text(description); $(".js-view-count[data-work-id=114758701]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 114758701; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='114758701']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 114758701, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=114758701]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":114758701,"title":"Detailed investigation on the insulation and permeability characteristics of rigid polyurethane foam loaded with micron-sized Turkey feather powder depending on the free volume change","translated_title":"","metadata":{"abstract":"This study brokes new ground to understand the insulation and permeability performances of rigid polyurethane foams (RPUFs) containing the different contents of micron-sized turkey feather powders (TFPs) depending on the free volume change for the first time. The effects of TFPs loading on the RPUFs were investigated by the examination of their structural and chemical features (particle size and ATR-FTIR analyses), free volume property (PALS analysis), insulation features (thermal conductivity and sound absorption tests), permeability performance (air and water vapor permeability tests) and cellular topology (SEM). PALS analysis results revealed that the addition of TFPs into the foams led to the sharp decrease in all free volume parameters since TFPs caused the formation of the disordered cells by occupying the holes in the matrix. Furthermore, both thermal conductivity and acoustic performance of the resulting foams get worse when compared to unfilled RPUF. This results were attri...","publisher":"SAGE Publications","publication_name":"Cellular Polymers"},"translated_abstract":"This study brokes new ground to understand the insulation and permeability performances of rigid polyurethane foams (RPUFs) containing the different contents of micron-sized turkey feather powders (TFPs) depending on the free volume change for the first time. The effects of TFPs loading on the RPUFs were investigated by the examination of their structural and chemical features (particle size and ATR-FTIR analyses), free volume property (PALS analysis), insulation features (thermal conductivity and sound absorption tests), permeability performance (air and water vapor permeability tests) and cellular topology (SEM). PALS analysis results revealed that the addition of TFPs into the foams led to the sharp decrease in all free volume parameters since TFPs caused the formation of the disordered cells by occupying the holes in the matrix. Furthermore, both thermal conductivity and acoustic performance of the resulting foams get worse when compared to unfilled RPUF. This results were attri...","internal_url":"https://www.academia.edu/114758701/Detailed_investigation_on_the_insulation_and_permeability_characteristics_of_rigid_polyurethane_foam_loaded_with_micron_sized_Turkey_feather_powder_depending_on_the_free_volume_change","translated_internal_url":"","created_at":"2024-02-11T07:05:59.860-08:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":51900448,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":41710160,"work_id":114758701,"tagging_user_id":51900448,"tagged_user_id":311382272,"co_author_invite_id":null,"email":"u***n@ibu.edu.tr","display_order":0,"name":"U. Soykan","title":"Detailed investigation on the insulation and permeability characteristics of rigid polyurethane foam loaded with micron-sized Turkey feather powder depending on the free volume change"}],"downloadable_attachments":[],"slug":"Detailed_investigation_on_the_insulation_and_permeability_characteristics_of_rigid_polyurethane_foam_loaded_with_micron_sized_Turkey_feather_powder_depending_on_the_free_volume_change","translated_slug":"","page_count":null,"language":"en","content_type":"Work","owner":{"id":51900448,"first_name":"UGUR","middle_initials":null,"last_name":"YAHSI","page_name":"UYAHSI","domain_name":"marmara","created_at":"2016-08-10T02:31:12.230-07:00","display_name":"UGUR YAHSI","url":"https://marmara.academia.edu/UYAHSI"},"attachments":[],"research_interests":[],"urls":[{"id":39367087,"url":"http://journals.sagepub.com/doi/pdf/10.1177/02624893231204773"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="114758700"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/114758700/Investigation_of_Nd3_Y2Si2O7_Phosphors_Using_Photoluminescence_and_Positron_Annihilation_Lifetime_Spectroscopy"><img alt="Research paper thumbnail of Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/114758700/Investigation_of_Nd3_Y2Si2O7_Phosphors_Using_Photoluminescence_and_Positron_Annihilation_Lifetime_Spectroscopy">Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/MuratErdem54">Murat Erdem</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/UYAHSI">UGUR YAHSI</a></span></div><div class="wp-workCard_item"><span>ECS Journal of Solid State Science and Technology</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Neodymium-doped Y2Si2O7 nanopowders were synthesized by sol-gel and annealed under varying anneal...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Neodymium-doped Y2Si2O7 nanopowders were synthesized by sol-gel and annealed under varying annealing temperature conditions. The phase transformation of Y2Si2O7 and the crystalline size change were observed with annealing temperature. Photoluminescence and the decay patterns of the 4F3/2→ 4I9/2, 4I11/2, and 4I13/2 transitions were examined to reveal the spectroscopic characteristics of the powders. The spectral outputs of Nd3+:Y2Si2O7 phosphors remain strongly connected to the phase properties of Y2Si2O7. The positron lifetimes (τ 2, τ 3, and τ 4) and intensities (I 2, I 3, and I 4) obtained by positron annihilation lifetime spectroscopy were discussed for neodymium-doped Y2Si2O7 phosphors to relate the structural and boundary changes in terms of the phases and molar contents of the Nd3+ ions. The τ 2 and I 2 components were related to the structural open space in the grain, the τ 3 and I 3 components were correlated with vacancy-like defects in the grain boundaries, and the τ 4 and...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="114758700"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="114758700"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 114758700; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=114758700]").text(description); $(".js-view-count[data-work-id=114758700]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 114758700; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='114758700']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 114758700, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=114758700]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":114758700,"title":"Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy","translated_title":"","metadata":{"abstract":"Neodymium-doped Y2Si2O7 nanopowders were synthesized by sol-gel and annealed under varying annealing temperature conditions. The phase transformation of Y2Si2O7 and the crystalline size change were observed with annealing temperature. Photoluminescence and the decay patterns of the 4F3/2→ 4I9/2, 4I11/2, and 4I13/2 transitions were examined to reveal the spectroscopic characteristics of the powders. The spectral outputs of Nd3+:Y2Si2O7 phosphors remain strongly connected to the phase properties of Y2Si2O7. The positron lifetimes (τ 2, τ 3, and τ 4) and intensities (I 2, I 3, and I 4) obtained by positron annihilation lifetime spectroscopy were discussed for neodymium-doped Y2Si2O7 phosphors to relate the structural and boundary changes in terms of the phases and molar contents of the Nd3+ ions. The τ 2 and I 2 components were related to the structural open space in the grain, the τ 3 and I 3 components were correlated with vacancy-like defects in the grain boundaries, and the τ 4 and...","publisher":"The Electrochemical Society","publication_name":"ECS Journal of Solid State Science and Technology"},"translated_abstract":"Neodymium-doped Y2Si2O7 nanopowders were synthesized by sol-gel and annealed under varying annealing temperature conditions. The phase transformation of Y2Si2O7 and the crystalline size change were observed with annealing temperature. Photoluminescence and the decay patterns of the 4F3/2→ 4I9/2, 4I11/2, and 4I13/2 transitions were examined to reveal the spectroscopic characteristics of the powders. The spectral outputs of Nd3+:Y2Si2O7 phosphors remain strongly connected to the phase properties of Y2Si2O7. The positron lifetimes (τ 2, τ 3, and τ 4) and intensities (I 2, I 3, and I 4) obtained by positron annihilation lifetime spectroscopy were discussed for neodymium-doped Y2Si2O7 phosphors to relate the structural and boundary changes in terms of the phases and molar contents of the Nd3+ ions. The τ 2 and I 2 components were related to the structural open space in the grain, the τ 3 and I 3 components were correlated with vacancy-like defects in the grain boundaries, and the τ 4 and...","internal_url":"https://www.academia.edu/114758700/Investigation_of_Nd3_Y2Si2O7_Phosphors_Using_Photoluminescence_and_Positron_Annihilation_Lifetime_Spectroscopy","translated_internal_url":"","created_at":"2024-02-11T07:05:59.665-08:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":51900448,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":41242533,"work_id":114758700,"tagging_user_id":51900448,"tagged_user_id":307097721,"co_author_invite_id":8084606,"email":"m***m@marmara.edu.tr","display_order":0,"name":"Murat Erdem","title":"Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy"},{"id":41242534,"work_id":114758700,"tagging_user_id":51900448,"tagged_user_id":194671682,"co_author_invite_id":null,"email":"n***3@yandex.com","display_order":1073741824,"name":"Necmettin Aktı","title":"Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy"},{"id":41242535,"work_id":114758700,"tagging_user_id":51900448,"tagged_user_id":290871916,"co_author_invite_id":null,"email":"l***2@outlook.com","display_order":1610612736,"name":"Leyla Akay","title":"Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy"},{"id":41242536,"work_id":114758700,"tagging_user_id":51900448,"tagged_user_id":null,"co_author_invite_id":5193426,"email":"c***v@marmara.edu.tr","display_order":1879048192,"name":"Cumali Tav","title":"Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy"}],"downloadable_attachments":[],"slug":"Investigation_of_Nd3_Y2Si2O7_Phosphors_Using_Photoluminescence_and_Positron_Annihilation_Lifetime_Spectroscopy","translated_slug":"","page_count":null,"language":"en","content_type":"Work","owner":{"id":51900448,"first_name":"UGUR","middle_initials":null,"last_name":"YAHSI","page_name":"UYAHSI","domain_name":"marmara","created_at":"2016-08-10T02:31:12.230-07:00","display_name":"UGUR YAHSI","url":"https://marmara.academia.edu/UYAHSI"},"attachments":[],"research_interests":[],"urls":[{"id":39367086,"url":"https://iopscience.iop.org/article/10.1149/2162-8777/acf0e9/pdf"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="114758699"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/114758699/Role_of_free_volume_in_mechanical_behaviors_of_side_chain_lcp_grafted_products_of_high_density_polyethylene"><img alt="Research paper thumbnail of Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/114758699/Role_of_free_volume_in_mechanical_behaviors_of_side_chain_lcp_grafted_products_of_high_density_polyethylene">Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/UYAHSI">UGUR YAHSI</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/SoykanU">U. Soykan</a></span></div><div class="wp-workCard_item"><span>Journal of Polymer Research</span><span>, 2021</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The monomer, p-benzophenoneoxycarbonylphenyl methacrylate (BPOCPMA) the polymer of which exhibit ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The monomer, p-benzophenoneoxycarbonylphenyl methacrylate (BPOCPMA) the polymer of which exhibit mesomorphic behavior as side chain LCP has been graft copolymerized onto high density polyethylene (HDPE) in order to improve its properties. The PALS analysis of the products displayed that the graft copolymerization, while led to relatively small increase in the free volume size at low percentages of poly(BPOCPMA), resulted in decreases in the size and fraction of the free volume with the increase of poly(BPOCPMA) content. The graft copolymerization gave rise to remarkable improvements in the mechanical properties, especially in tensile strength and modulus, and the improvements were accompanied by the decreases in the free volume fraction. SEM analysis of the fracture surfaces of the mechanical test samples displayed a gradual transition from ductile fracture at low graft contents to brittle nature dominated at high percentages of poly(BPOCPMA). The XRD analysis showed significant expansions in the lateral dimensions (a and b parameters) of the orthorhombic unit cell in the crystalline domains of HDPE matrix, in consistence with poly(BPOCPMA) content. The grafting also gave rise to noteworthy increases in the crystalline melting temperature of the HDPE.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="114758699"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="114758699"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 114758699; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=114758699]").text(description); $(".js-view-count[data-work-id=114758699]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 114758699; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='114758699']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 114758699, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=114758699]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":114758699,"title":"Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene","translated_title":"","metadata":{"abstract":"The monomer, p-benzophenoneoxycarbonylphenyl methacrylate (BPOCPMA) the polymer of which exhibit mesomorphic behavior as side chain LCP has been graft copolymerized onto high density polyethylene (HDPE) in order to improve its properties. The PALS analysis of the products displayed that the graft copolymerization, while led to relatively small increase in the free volume size at low percentages of poly(BPOCPMA), resulted in decreases in the size and fraction of the free volume with the increase of poly(BPOCPMA) content. The graft copolymerization gave rise to remarkable improvements in the mechanical properties, especially in tensile strength and modulus, and the improvements were accompanied by the decreases in the free volume fraction. SEM analysis of the fracture surfaces of the mechanical test samples displayed a gradual transition from ductile fracture at low graft contents to brittle nature dominated at high percentages of poly(BPOCPMA). The XRD analysis showed significant expansions in the lateral dimensions (a and b parameters) of the orthorhombic unit cell in the crystalline domains of HDPE matrix, in consistence with poly(BPOCPMA) content. The grafting also gave rise to noteworthy increases in the crystalline melting temperature of the HDPE.","publisher":"Springer Science and Business Media LLC","publication_date":{"day":null,"month":null,"year":2021,"errors":{}},"publication_name":"Journal of Polymer Research"},"translated_abstract":"The monomer, p-benzophenoneoxycarbonylphenyl methacrylate (BPOCPMA) the polymer of which exhibit mesomorphic behavior as side chain LCP has been graft copolymerized onto high density polyethylene (HDPE) in order to improve its properties. The PALS analysis of the products displayed that the graft copolymerization, while led to relatively small increase in the free volume size at low percentages of poly(BPOCPMA), resulted in decreases in the size and fraction of the free volume with the increase of poly(BPOCPMA) content. The graft copolymerization gave rise to remarkable improvements in the mechanical properties, especially in tensile strength and modulus, and the improvements were accompanied by the decreases in the free volume fraction. SEM analysis of the fracture surfaces of the mechanical test samples displayed a gradual transition from ductile fracture at low graft contents to brittle nature dominated at high percentages of poly(BPOCPMA). The XRD analysis showed significant expansions in the lateral dimensions (a and b parameters) of the orthorhombic unit cell in the crystalline domains of HDPE matrix, in consistence with poly(BPOCPMA) content. The grafting also gave rise to noteworthy increases in the crystalline melting temperature of the HDPE.","internal_url":"https://www.academia.edu/114758699/Role_of_free_volume_in_mechanical_behaviors_of_side_chain_lcp_grafted_products_of_high_density_polyethylene","translated_internal_url":"","created_at":"2024-02-11T07:05:58.481-08:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":51900448,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":41494566,"work_id":114758699,"tagging_user_id":51900448,"tagged_user_id":null,"co_author_invite_id":7555574,"email":"b***n@kemerburgaz.edu.tr","display_order":0,"name":"Behiye Sen","title":"Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene"},{"id":41494567,"work_id":114758699,"tagging_user_id":51900448,"tagged_user_id":204436739,"co_author_invite_id":null,"email":"s***n@yyu.edu.tr","display_order":1073741824,"name":"sedat Çetin","title":"Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene"},{"id":41494568,"work_id":114758699,"tagging_user_id":51900448,"tagged_user_id":311382272,"co_author_invite_id":8119983,"email":"u***n@ibu.edu.tr","display_order":1610612736,"name":"U. Soykan","title":"Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene"}],"downloadable_attachments":[],"slug":"Role_of_free_volume_in_mechanical_behaviors_of_side_chain_lcp_grafted_products_of_high_density_polyethylene","translated_slug":"","page_count":null,"language":"en","content_type":"Work","owner":{"id":51900448,"first_name":"UGUR","middle_initials":null,"last_name":"YAHSI","page_name":"UYAHSI","domain_name":"marmara","created_at":"2016-08-10T02:31:12.230-07:00","display_name":"UGUR YAHSI","url":"https://marmara.academia.edu/UYAHSI"},"attachments":[],"research_interests":[{"id":56,"name":"Materials Engineering","url":"https://www.academia.edu/Documents/in/Materials_Engineering"},{"id":511,"name":"Materials 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href="https://www.academia.edu/114758686/Effect_of_Tacticity_on_Viscosity_Hole_Fraction_Behavior_of_Atactic_and_Syndiotactic_Polystyrenes">Effect of Tacticity on Viscosity-Hole Fraction Behavior of Atactic and Syndiotactic Polystyrenes</a></div><div class="wp-workCard_item"><span>Journal of the Turkish Chemical Society, Section A: Chemistry</span><span>, Jan 30, 2015</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="4b268f6f57261ae332fbc654e276dc17" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":111367596,"asset_id":114758686,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/111367596/download_file?st=MTczMjQwNjE3Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" 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class="js-work-strip profile--work_container" data-work-id="105063397"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/105063397/Structural_and_dielectrical_properties_of_PMMA_TiO2_composites_in_terms_of_free_volume_defects_probed_by_positron_annihilation_lifetime_spectroscopy"><img alt="Research paper thumbnail of Structural and dielectrical properties of PMMA/TiO2 composites in terms of free volume defects probed by positron annihilation lifetime spectroscopy" class="work-thumbnail" src="https://attachments.academia-assets.com/104621073/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/105063397/Structural_and_dielectrical_properties_of_PMMA_TiO2_composites_in_terms_of_free_volume_defects_probed_by_positron_annihilation_lifetime_spectroscopy">Structural and dielectrical properties of PMMA/TiO2 composites in terms of free volume defects probed by positron annihilation lifetime spectroscopy</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/KadirEsmer">Kadir Esmer</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/UYAHSI">UGUR YAHSI</a></span></div><div class="wp-workCard_item"><span>Polymers and Polymer Composites</span><span>, 2020</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">A suspension of ultrasonically agitated Titanium dioxide micrometer-sized powder has been introdu...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">A suspension of ultrasonically agitated Titanium dioxide micrometer-sized powder has been introduced into a poly(methyl methacrylate) (PMMA) matrix by solvent (CHCl3) mixing under slow mechanical stirring, and the resulting suspension was used to cast free-standing PMMA/TiO2 composite films. Filler contents from 0 wt% to 7.5 wt% were selected, since TiO2 particles could not be previously suspended in chloroform at higher concentrations by ultrasonic agitation. Optical and dielectric properties of composites were determined by ultraviolet (UV)-visible and dielectric spectrometry. In the UV region, 450% improvement of UV absorption was achieved in the TiO2/PMMA composite compared with neat PMMA. The structural properties and hole-free volume of the composites were determined by X-ray diffractometry and positron annihilation lifetime spectroscopy, respectively. The particle size and homogeneous dispersion of the particles in the polymer matrix were related to the hole-free volume of th...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="0f1515ebe416a1aa7e01a1171ef89f60" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":104621073,"asset_id":105063397,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/104621073/download_file?st=MTczMjQwNjE3Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="105063397"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="105063397"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 105063397; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=105063397]").text(description); $(".js-view-count[data-work-id=105063397]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 105063397; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='105063397']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 105063397, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "0f1515ebe416a1aa7e01a1171ef89f60" } } $('.js-work-strip[data-work-id=105063397]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":105063397,"title":"Structural and dielectrical properties of PMMA/TiO2 composites in terms of free volume defects probed by positron annihilation lifetime spectroscopy","translated_title":"","metadata":{"abstract":"A suspension of ultrasonically agitated Titanium dioxide micrometer-sized powder has been introduced into a poly(methyl methacrylate) (PMMA) matrix by solvent (CHCl3) mixing under slow mechanical stirring, and the resulting suspension was used to cast free-standing PMMA/TiO2 composite films. Filler contents from 0 wt% to 7.5 wt% were selected, since TiO2 particles could not be previously suspended in chloroform at higher concentrations by ultrasonic agitation. Optical and dielectric properties of composites were determined by ultraviolet (UV)-visible and dielectric spectrometry. In the UV region, 450% improvement of UV absorption was achieved in the TiO2/PMMA composite compared with neat PMMA. The structural properties and hole-free volume of the composites were determined by X-ray diffractometry and positron annihilation lifetime spectroscopy, respectively. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="94743811"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/94743811/Analysis_of_positron_lifetime_spectra_using_Bayesian_inference"><img alt="Research paper thumbnail of Analysis of positron lifetime spectra using Bayesian inference" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/94743811/Analysis_of_positron_lifetime_spectra_using_Bayesian_inference">Analysis of positron lifetime spectra using Bayesian inference</a></div><div class="wp-workCard_item"><span>2nd IET International Conference on Intelligent Signal Processing 2015 (ISP)</span><span>, 2015</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Positron annihilation is a well-established technique for producing spectra which can be analyzed...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Positron annihilation is a well-established technique for producing spectra which can be analyzed for extracting physically meaningful parameters that characterize material defects and vacancies on an atomic scale. Mathematically, this is based on fitting a parameter-dependent model to the experimental data. Traditionally, this fit involves local nonlinear optimization routines that depend on a reasonable initial guess for the searched parameters. Therefore, very different sets of parameters may yield indistinguishably good fits for a given experimental spectrum but, give rise to ambiguities in data analysis. In order to alleviate them, a computer program has been developed for analyzing positron lifetime spectra by incorporating a global nonlinear optimization routine based on Simulated annealing (SA) into the Markov chain Monte-Carlo Bayesian inference algorithm (MCMC-BI) so that it provides a robust fitting tool and yields information on the reliability of the results. It is tested against experimental spectra, comparing the results with those from the well-established commercial programs.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="94743811"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="94743811"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 94743811; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=94743811]").text(description); $(".js-view-count[data-work-id=94743811]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 94743811; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='94743811']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 94743811, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=94743811]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":94743811,"title":"Analysis of positron lifetime spectra using Bayesian inference","translated_title":"","metadata":{"abstract":"Positron annihilation is a well-established technique for producing spectra which can be analyzed for extracting physically meaningful parameters that characterize material defects and vacancies on an atomic scale. 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It is tested against experimental spectra, comparing the results with those from the well-established commercial programs.","publisher":"Institution of Engineering and Technology","publication_date":{"day":null,"month":null,"year":2015,"errors":{}},"publication_name":"2nd IET International Conference on Intelligent Signal Processing 2015 (ISP)"},"translated_abstract":"Positron annihilation is a well-established technique for producing spectra which can be analyzed for extracting physically meaningful parameters that characterize material defects and vacancies on an atomic scale. Mathematically, this is based on fitting a parameter-dependent model to the experimental data. Traditionally, this fit involves local nonlinear optimization routines that depend on a reasonable initial guess for the searched parameters. Therefore, very different sets of parameters may yield indistinguishably good fits for a given experimental spectrum but, give rise to ambiguities in data analysis. In order to alleviate them, a computer program has been developed for analyzing positron lifetime spectra by incorporating a global nonlinear optimization routine based on Simulated annealing (SA) into the Markov chain Monte-Carlo Bayesian inference algorithm (MCMC-BI) so that it provides a robust fitting tool and yields information on the reliability of the results. It is tested against experimental spectra, comparing the results with those from the well-established commercial programs.","internal_url":"https://www.academia.edu/94743811/Analysis_of_positron_lifetime_spectra_using_Bayesian_inference","translated_internal_url":"","created_at":"2023-01-10T19:31:45.644-08:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":51900448,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":41843965,"work_id":94743811,"tagging_user_id":51900448,"tagged_user_id":null,"co_author_invite_id":8170325,"email":"d***g@marmara.edu.tr","display_order":0,"name":"Dursun Üstündağ","title":"Analysis of positron lifetime spectra using Bayesian inference"}],"downloadable_attachments":[],"slug":"Analysis_of_positron_lifetime_spectra_using_Bayesian_inference","translated_slug":"","page_count":null,"language":"en","content_type":"Work","owner":{"id":51900448,"first_name":"UGUR","middle_initials":null,"last_name":"YAHSI","page_name":"UYAHSI","domain_name":"marmara","created_at":"2016-08-10T02:31:12.230-07:00","display_name":"UGUR YAHSI","url":"https://marmara.academia.edu/UYAHSI"},"attachments":[],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering"},{"id":422,"name":"Computer Science","url":"https://www.academia.edu/Documents/in/Computer_Science"},{"id":6421,"name":"Simulated Annealing","url":"https://www.academia.edu/Documents/in/Simulated_Annealing"},{"id":18574,"name":"Inference","url":"https://www.academia.edu/Documents/in/Inference"},{"id":26817,"name":"Algorithm","url":"https://www.academia.edu/Documents/in/Algorithm"},{"id":85262,"name":"Markov Chain Monte Carlo","url":"https://www.academia.edu/Documents/in/Markov_Chain_Monte_Carlo"},{"id":584725,"name":"Positron","url":"https://www.academia.edu/Documents/in/Positron"},{"id":1032783,"name":"Bayesian Probability","url":"https://www.academia.edu/Documents/in/Bayesian_Probability"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="94743808"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/94743808/Optical_and_photoluminescence_spectroscopy_analysis_and_Doppler_broadening_annihilation_radiation_studies_of_perovskites_based_on_La1_XNiXMnO2_75_thin_layers"><img alt="Research paper thumbnail of Optical and photoluminescence spectroscopy analysis and Doppler broadening annihilation radiation studies of perovskites based on La1-XNiXMnO2.75 thin layers" class="work-thumbnail" src="https://attachments.academia-assets.com/97117096/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/94743808/Optical_and_photoluminescence_spectroscopy_analysis_and_Doppler_broadening_annihilation_radiation_studies_of_perovskites_based_on_La1_XNiXMnO2_75_thin_layers">Optical and photoluminescence spectroscopy analysis and Doppler broadening annihilation radiation studies of perovskites based on La1-XNiXMnO2.75 thin layers</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/UYAHSI">UGUR YAHSI</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/AAmina5">A. Amina</a></span></div><div class="wp-workCard_item"><span>Optik</span><span>, 2020</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="c709e067251d353a59de7906ff89c731" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":97117096,"asset_id":94743808,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/97117096/download_file?st=MTczMjQwNjE3Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="94743808"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="94743808"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 94743808; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=94743808]").text(description); $(".js-view-count[data-work-id=94743808]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 94743808; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='94743808']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 94743808, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "c709e067251d353a59de7906ff89c731" } } $('.js-work-strip[data-work-id=94743808]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":94743808,"title":"Optical and photoluminescence spectroscopy analysis and Doppler broadening annihilation radiation studies of perovskites based on La1-XNiXMnO2.75 thin layers","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="88081729"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/88081729/Free_volume_vacancy_behaviour_and_dynamic_viscosity_of_diesel_fuels_with_additives_at_elevated_temperature_and_pressure_thermo_occupancy_function"><img alt="Research paper thumbnail of Free volume vacancy behaviour and dynamic viscosity of diesel fuels with additives at elevated temperature and pressure: thermo-occupancy function" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/88081729/Free_volume_vacancy_behaviour_and_dynamic_viscosity_of_diesel_fuels_with_additives_at_elevated_temperature_and_pressure_thermo_occupancy_function">Free volume vacancy behaviour and dynamic viscosity of diesel fuels with additives at elevated temperature and pressure: thermo-occupancy function</a></div><div class="wp-workCard_item"><span>International Journal of Oil, Gas and Coal Technology</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="88081729"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="88081729"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 88081729; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="88081728"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/88081728/Heavy_ion_irradiation_induced_defects_in_Zircaloy_4"><img alt="Research paper thumbnail of Heavy ion irradiation induced defects in Zircaloy-4" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/88081728/Heavy_ion_irradiation_induced_defects_in_Zircaloy_4">Heavy ion irradiation induced defects in Zircaloy-4</a></div><div class="wp-workCard_item"><span>Physica Scripta</span><span>, 2021</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Radiation damage induced in Zircaloy-4 by 20 MeV Au ions was investigated using Grazing x-ray dif...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Radiation damage induced in Zircaloy-4 by 20 MeV Au ions was investigated using Grazing x-ray diffraction (GIXRD), positron annihilation techniques, micro-and nano-hardness techniques. The irradiations were performed at room temperature in the fluence range 1 × 1013–5 × 1014 ions cm−2 corresponding to 0.07–3.63 displacements per atom (dpa). The grazing incidence angle x-ray diffraction (GIXRD) revealed the presence of the hydride precipitates in the analyzed zircaloy-4. According to our experimental data it is found that the amount of these precipitates decreases after irradiation as emphasized by GIXRD and Positron Annihilation Lifetime Spectroscopy (PALS) results. The same data revealed also a zircaloy-4 swelling above a certain dose. From the combination of domain size/microstrain with the micro- and nano-hardness results, we conclude that the Zircaloy hardening is mainly due to the dislocation formation indicating the effect of the microstructure on the mechanical properties. Mo...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="88081728"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="88081728"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 88081728; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=88081728]").text(description); $(".js-view-count[data-work-id=88081728]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 88081728; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='88081728']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 88081728, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=88081728]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":88081728,"title":"Heavy ion irradiation induced defects in Zircaloy-4","translated_title":"","metadata":{"abstract":"Radiation damage induced in Zircaloy-4 by 20 MeV Au ions was investigated using Grazing x-ray diffraction (GIXRD), positron annihilation techniques, micro-and nano-hardness techniques. The irradiations were performed at room temperature in the fluence range 1 × 1013–5 × 1014 ions cm−2 corresponding to 0.07–3.63 displacements per atom (dpa). The grazing incidence angle x-ray diffraction (GIXRD) revealed the presence of the hydride precipitates in the analyzed zircaloy-4. According to our experimental data it is found that the amount of these precipitates decreases after irradiation as emphasized by GIXRD and Positron Annihilation Lifetime Spectroscopy (PALS) results. The same data revealed also a zircaloy-4 swelling above a certain dose. From the combination of domain size/microstrain with the micro- and nano-hardness results, we conclude that the Zircaloy hardening is mainly due to the dislocation formation indicating the effect of the microstructure on the mechanical properties. Mo...","publication_date":{"day":null,"month":null,"year":2021,"errors":{}},"publication_name":"Physica Scripta"},"translated_abstract":"Radiation damage induced in Zircaloy-4 by 20 MeV Au ions was investigated using Grazing x-ray diffraction (GIXRD), positron annihilation techniques, micro-and nano-hardness techniques. The irradiations were performed at room temperature in the fluence range 1 × 1013–5 × 1014 ions cm−2 corresponding to 0.07–3.63 displacements per atom (dpa). The grazing incidence angle x-ray diffraction (GIXRD) revealed the presence of the hydride precipitates in the analyzed zircaloy-4. According to our experimental data it is found that the amount of these precipitates decreases after irradiation as emphasized by GIXRD and Positron Annihilation Lifetime Spectroscopy (PALS) results. The same data revealed also a zircaloy-4 swelling above a certain dose. From the combination of domain size/microstrain with the micro- and nano-hardness results, we conclude that the Zircaloy hardening is mainly due to the dislocation formation indicating the effect of the microstructure on the mechanical properties. Mo...","internal_url":"https://www.academia.edu/88081728/Heavy_ion_irradiation_induced_defects_in_Zircaloy_4","translated_internal_url":"","created_at":"2022-10-07T12:13:48.817-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":51900448,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":39922668,"work_id":88081728,"tagging_user_id":51900448,"tagged_user_id":33033970,"co_author_invite_id":null,"email":"i***n@yahoo.com","display_order":0,"name":"Mahmoud Izerrouken","title":"Heavy ion irradiation induced defects in Zircaloy-4"},{"id":41685093,"work_id":88081728,"tagging_user_id":51900448,"tagged_user_id":null,"co_author_invite_id":3377768,"email":"m***a@yahoo.fr","display_order":1073741824,"name":"M. 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ZM‐doped BHA (ZM‐BHA) was characterized by X‐ray diffraction and positron annihilation lifetime spectroscopy (PALS). Density and hardness behavior were measured with respect to increasing sintering temperature. PALS results indicate that the longest lifetime component τ3 of ortho‐positronium (o‐Ps) localized at open spaces is attributed to the vacancy site and almost constant with the ZM contents and the sintering temperatures to have a mean value of 0.680 ns (corresponding to the radius of 0.997 nm). This average value is ascribed to the OH group defects along the main crystalline line. On the other hand, the o‐Ps intensity attributed to the number of vacancy sites increases almost linearly with ZM additives and sintering temperatures. The intensity...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="113646454"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="113646454"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 113646454; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=113646454]").text(description); $(".js-view-count[data-work-id=113646454]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 113646454; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='113646454']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 113646454, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=113646454]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":113646454,"title":"Effects of sintering and zirconmullite doping on nanostructural vacancies of bovine hydroxyapatite by positron techniques","translated_title":"","metadata":{"abstract":"In this study, the nanostructural vacancy behavior of bovine derived hydroxyapatite (BHA) doped with powder zirconmullite (ZM) contents of 5, 7.5, 10 and 12.5 wt.% were presented at sintering temperatures of 1000, 1100, 1200 and 1300°C. ZM‐doped BHA (ZM‐BHA) was characterized by X‐ray diffraction and positron annihilation lifetime spectroscopy (PALS). Density and hardness behavior were measured with respect to increasing sintering temperature. PALS results indicate that the longest lifetime component τ3 of ortho‐positronium (o‐Ps) localized at open spaces is attributed to the vacancy site and almost constant with the ZM contents and the sintering temperatures to have a mean value of 0.680 ns (corresponding to the radius of 0.997 nm). This average value is ascribed to the OH group defects along the main crystalline line. On the other hand, the o‐Ps intensity attributed to the number of vacancy sites increases almost linearly with ZM additives and sintering temperatures. The intensity...","publisher":"Wiley","publication_name":"Journal of the American Ceramic Society"},"translated_abstract":"In this study, the nanostructural vacancy behavior of bovine derived hydroxyapatite (BHA) doped with powder zirconmullite (ZM) contents of 5, 7.5, 10 and 12.5 wt.% were presented at sintering temperatures of 1000, 1100, 1200 and 1300°C. ZM‐doped BHA (ZM‐BHA) was characterized by X‐ray diffraction and positron annihilation lifetime spectroscopy (PALS). Density and hardness behavior were measured with respect to increasing sintering temperature. PALS results indicate that the longest lifetime component τ3 of ortho‐positronium (o‐Ps) localized at open spaces is attributed to the vacancy site and almost constant with the ZM contents and the sintering temperatures to have a mean value of 0.680 ns (corresponding to the radius of 0.997 nm). This average value is ascribed to the OH group defects along the main crystalline line. On the other hand, the o‐Ps intensity attributed to the number of vacancy sites increases almost linearly with ZM additives and sintering temperatures. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="114758705"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/114758705/The_Effect_of_Hole_Fraction_on_Viscosity_in_Atactic_and_Syndiotactic_Polystyrenes"><img alt="Research paper thumbnail of The Effect of Hole Fraction on Viscosity in Atactic and Syndiotactic Polystyrenes" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/114758705/The_Effect_of_Hole_Fraction_on_Viscosity_in_Atactic_and_Syndiotactic_Polystyrenes">The Effect of Hole Fraction on Viscosity in Atactic and Syndiotactic Polystyrenes</a></div><div class="wp-workCard_item"><span>International Journal of Thermophysics</span><span>, Nov 1, 2015</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The non-Newtonian viscosity behavior of atactic and syndiotactic polystyrenes (aPS and sPS), at t...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The non-Newtonian viscosity behavior of atactic and syndiotactic polystyrenes (aPS and sPS), at temperatures from $$200\,{}^{\circ }\hbox {C}$$200∘C to $$300\,{}^{\circ }\hbox {C}$$300∘C and pressures up to 30 MPa, was studied using the recently proposed Yahsi–Dinc–Tav model, in particular, the Cross-like model. Viscosity data with shear rates of $$0.01\,\hbox {s}^{-1}$$0.01s-1 to $$5000\,\hbox {s}^{-1}$$5000s-1 were taken from literature at ambient pressure and were reproduced from the Cross-Vogel model at elevated pressures. The viscosities were predicted using the Yahsi–Dinc–Tav model with average absolute deviations of 4.37 % at ambient pressure and 9.63 % at high pressures for aPS and 2.54 % at ambient pressure and 4.79 % at high pressures for sPS. We extended this work to relate the zero shear and the constant shear rate viscosities in terms of the temperature- and pressure-dependent hole fraction using the thermo-occupancy function. The hole fraction (h) was computed from Simha–Somcynsky hole theory. Analytical relationships of specific density and hole fraction in terms of scaled temperature and pressure were constructed for practical purposes. The effects of tacticity of polystyrenes were discussed in terms of the thermo-occupancy function in detail. In particular, the derivative of the logarithm of the viscosities (viscoholibility) was found to decrease with an increasing hole fraction.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="114758705"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="114758705"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 114758705; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=114758705]").text(description); $(".js-view-count[data-work-id=114758705]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 114758705; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='114758705']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 114758705, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=114758705]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":114758705,"title":"The Effect of Hole Fraction on Viscosity in Atactic and Syndiotactic Polystyrenes","translated_title":"","metadata":{"abstract":"The non-Newtonian viscosity behavior of atactic and syndiotactic polystyrenes (aPS and sPS), at temperatures from $$200\\,{}^{\\circ }\\hbox {C}$$200∘C to $$300\\,{}^{\\circ }\\hbox {C}$$300∘C and pressures up to 30 MPa, was studied using the recently proposed Yahsi–Dinc–Tav model, in particular, the Cross-like model. Viscosity data with shear rates of $$0.01\\,\\hbox {s}^{-1}$$0.01s-1 to $$5000\\,\\hbox {s}^{-1}$$5000s-1 were taken from literature at ambient pressure and were reproduced from the Cross-Vogel model at elevated pressures. The viscosities were predicted using the Yahsi–Dinc–Tav model with average absolute deviations of 4.37 % at ambient pressure and 9.63 % at high pressures for aPS and 2.54 % at ambient pressure and 4.79 % at high pressures for sPS. We extended this work to relate the zero shear and the constant shear rate viscosities in terms of the temperature- and pressure-dependent hole fraction using the thermo-occupancy function. The hole fraction (h) was computed from Simha–Somcynsky hole theory. Analytical relationships of specific density and hole fraction in terms of scaled temperature and pressure were constructed for practical purposes. The effects of tacticity of polystyrenes were discussed in terms of the thermo-occupancy function in detail. 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The viscosities were predicted using the Yahsi–Dinc–Tav model with average absolute deviations of 4.37 % at ambient pressure and 9.63 % at high pressures for aPS and 2.54 % at ambient pressure and 4.79 % at high pressures for sPS. We extended this work to relate the zero shear and the constant shear rate viscosities in terms of the temperature- and pressure-dependent hole fraction using the thermo-occupancy function. The hole fraction (h) was computed from Simha–Somcynsky hole theory. Analytical relationships of specific density and hole fraction in terms of scaled temperature and pressure were constructed for practical purposes. The effects of tacticity of polystyrenes were discussed in terms of the thermo-occupancy function in detail. 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1995</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">We have analysed the equation of states (eos) data for five series of compounds in terms of the S...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">We have analysed the equation of states (eos) data for five series of compounds in terms of the Simha-Somcynsky hole theory and, in this manner, obtained graph-averaged temperature, volume and pressure scaling parameters. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="114758701"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/114758701/Detailed_investigation_on_the_insulation_and_permeability_characteristics_of_rigid_polyurethane_foam_loaded_with_micron_sized_Turkey_feather_powder_depending_on_the_free_volume_change"><img alt="Research paper thumbnail of Detailed investigation on the insulation and permeability characteristics of rigid polyurethane foam loaded with micron-sized Turkey feather powder depending on the free volume change" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/114758701/Detailed_investigation_on_the_insulation_and_permeability_characteristics_of_rigid_polyurethane_foam_loaded_with_micron_sized_Turkey_feather_powder_depending_on_the_free_volume_change">Detailed investigation on the insulation and permeability characteristics of rigid polyurethane foam loaded with micron-sized Turkey feather powder depending on the free volume change</a></div><div class="wp-workCard_item"><span>Cellular Polymers</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This study brokes new ground to understand the insulation and permeability performances of rigid ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This study brokes new ground to understand the insulation and permeability performances of rigid polyurethane foams (RPUFs) containing the different contents of micron-sized turkey feather powders (TFPs) depending on the free volume change for the first time. The effects of TFPs loading on the RPUFs were investigated by the examination of their structural and chemical features (particle size and ATR-FTIR analyses), free volume property (PALS analysis), insulation features (thermal conductivity and sound absorption tests), permeability performance (air and water vapor permeability tests) and cellular topology (SEM). PALS analysis results revealed that the addition of TFPs into the foams led to the sharp decrease in all free volume parameters since TFPs caused the formation of the disordered cells by occupying the holes in the matrix. Furthermore, both thermal conductivity and acoustic performance of the resulting foams get worse when compared to unfilled RPUF. This results were attri...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="114758701"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="114758701"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 114758701; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=114758701]").text(description); $(".js-view-count[data-work-id=114758701]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 114758701; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='114758701']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 114758701, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=114758701]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":114758701,"title":"Detailed investigation on the insulation and permeability characteristics of rigid polyurethane foam loaded with micron-sized Turkey feather powder depending on the free volume change","translated_title":"","metadata":{"abstract":"This study brokes new ground to understand the insulation and permeability performances of rigid polyurethane foams (RPUFs) containing the different contents of micron-sized turkey feather powders (TFPs) depending on the free volume change for the first time. The effects of TFPs loading on the RPUFs were investigated by the examination of their structural and chemical features (particle size and ATR-FTIR analyses), free volume property (PALS analysis), insulation features (thermal conductivity and sound absorption tests), permeability performance (air and water vapor permeability tests) and cellular topology (SEM). PALS analysis results revealed that the addition of TFPs into the foams led to the sharp decrease in all free volume parameters since TFPs caused the formation of the disordered cells by occupying the holes in the matrix. Furthermore, both thermal conductivity and acoustic performance of the resulting foams get worse when compared to unfilled RPUF. This results were attri...","publisher":"SAGE Publications","publication_name":"Cellular Polymers"},"translated_abstract":"This study brokes new ground to understand the insulation and permeability performances of rigid polyurethane foams (RPUFs) containing the different contents of micron-sized turkey feather powders (TFPs) depending on the free volume change for the first time. The effects of TFPs loading on the RPUFs were investigated by the examination of their structural and chemical features (particle size and ATR-FTIR analyses), free volume property (PALS analysis), insulation features (thermal conductivity and sound absorption tests), permeability performance (air and water vapor permeability tests) and cellular topology (SEM). PALS analysis results revealed that the addition of TFPs into the foams led to the sharp decrease in all free volume parameters since TFPs caused the formation of the disordered cells by occupying the holes in the matrix. Furthermore, both thermal conductivity and acoustic performance of the resulting foams get worse when compared to unfilled RPUF. This results were attri...","internal_url":"https://www.academia.edu/114758701/Detailed_investigation_on_the_insulation_and_permeability_characteristics_of_rigid_polyurethane_foam_loaded_with_micron_sized_Turkey_feather_powder_depending_on_the_free_volume_change","translated_internal_url":"","created_at":"2024-02-11T07:05:59.860-08:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":51900448,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":41710160,"work_id":114758701,"tagging_user_id":51900448,"tagged_user_id":311382272,"co_author_invite_id":null,"email":"u***n@ibu.edu.tr","display_order":0,"name":"U. Soykan","title":"Detailed investigation on the insulation and permeability characteristics of rigid polyurethane foam loaded with micron-sized Turkey feather powder depending on the free volume change"}],"downloadable_attachments":[],"slug":"Detailed_investigation_on_the_insulation_and_permeability_characteristics_of_rigid_polyurethane_foam_loaded_with_micron_sized_Turkey_feather_powder_depending_on_the_free_volume_change","translated_slug":"","page_count":null,"language":"en","content_type":"Work","owner":{"id":51900448,"first_name":"UGUR","middle_initials":null,"last_name":"YAHSI","page_name":"UYAHSI","domain_name":"marmara","created_at":"2016-08-10T02:31:12.230-07:00","display_name":"UGUR YAHSI","url":"https://marmara.academia.edu/UYAHSI"},"attachments":[],"research_interests":[],"urls":[{"id":39367087,"url":"http://journals.sagepub.com/doi/pdf/10.1177/02624893231204773"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="114758700"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/114758700/Investigation_of_Nd3_Y2Si2O7_Phosphors_Using_Photoluminescence_and_Positron_Annihilation_Lifetime_Spectroscopy"><img alt="Research paper thumbnail of Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/114758700/Investigation_of_Nd3_Y2Si2O7_Phosphors_Using_Photoluminescence_and_Positron_Annihilation_Lifetime_Spectroscopy">Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/MuratErdem54">Murat Erdem</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/UYAHSI">UGUR YAHSI</a></span></div><div class="wp-workCard_item"><span>ECS Journal of Solid State Science and Technology</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Neodymium-doped Y2Si2O7 nanopowders were synthesized by sol-gel and annealed under varying anneal...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Neodymium-doped Y2Si2O7 nanopowders were synthesized by sol-gel and annealed under varying annealing temperature conditions. The phase transformation of Y2Si2O7 and the crystalline size change were observed with annealing temperature. Photoluminescence and the decay patterns of the 4F3/2→ 4I9/2, 4I11/2, and 4I13/2 transitions were examined to reveal the spectroscopic characteristics of the powders. The spectral outputs of Nd3+:Y2Si2O7 phosphors remain strongly connected to the phase properties of Y2Si2O7. The positron lifetimes (τ 2, τ 3, and τ 4) and intensities (I 2, I 3, and I 4) obtained by positron annihilation lifetime spectroscopy were discussed for neodymium-doped Y2Si2O7 phosphors to relate the structural and boundary changes in terms of the phases and molar contents of the Nd3+ ions. The τ 2 and I 2 components were related to the structural open space in the grain, the τ 3 and I 3 components were correlated with vacancy-like defects in the grain boundaries, and the τ 4 and...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="114758700"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="114758700"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 114758700; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=114758700]").text(description); $(".js-view-count[data-work-id=114758700]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 114758700; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='114758700']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 114758700, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=114758700]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":114758700,"title":"Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy","translated_title":"","metadata":{"abstract":"Neodymium-doped Y2Si2O7 nanopowders were synthesized by sol-gel and annealed under varying annealing temperature conditions. The phase transformation of Y2Si2O7 and the crystalline size change were observed with annealing temperature. Photoluminescence and the decay patterns of the 4F3/2→ 4I9/2, 4I11/2, and 4I13/2 transitions were examined to reveal the spectroscopic characteristics of the powders. The spectral outputs of Nd3+:Y2Si2O7 phosphors remain strongly connected to the phase properties of Y2Si2O7. The positron lifetimes (τ 2, τ 3, and τ 4) and intensities (I 2, I 3, and I 4) obtained by positron annihilation lifetime spectroscopy were discussed for neodymium-doped Y2Si2O7 phosphors to relate the structural and boundary changes in terms of the phases and molar contents of the Nd3+ ions. The τ 2 and I 2 components were related to the structural open space in the grain, the τ 3 and I 3 components were correlated with vacancy-like defects in the grain boundaries, and the τ 4 and...","publisher":"The Electrochemical Society","publication_name":"ECS Journal of Solid State Science and Technology"},"translated_abstract":"Neodymium-doped Y2Si2O7 nanopowders were synthesized by sol-gel and annealed under varying annealing temperature conditions. The phase transformation of Y2Si2O7 and the crystalline size change were observed with annealing temperature. Photoluminescence and the decay patterns of the 4F3/2→ 4I9/2, 4I11/2, and 4I13/2 transitions were examined to reveal the spectroscopic characteristics of the powders. The spectral outputs of Nd3+:Y2Si2O7 phosphors remain strongly connected to the phase properties of Y2Si2O7. The positron lifetimes (τ 2, τ 3, and τ 4) and intensities (I 2, I 3, and I 4) obtained by positron annihilation lifetime spectroscopy were discussed for neodymium-doped Y2Si2O7 phosphors to relate the structural and boundary changes in terms of the phases and molar contents of the Nd3+ ions. The τ 2 and I 2 components were related to the structural open space in the grain, the τ 3 and I 3 components were correlated with vacancy-like defects in the grain boundaries, and the τ 4 and...","internal_url":"https://www.academia.edu/114758700/Investigation_of_Nd3_Y2Si2O7_Phosphors_Using_Photoluminescence_and_Positron_Annihilation_Lifetime_Spectroscopy","translated_internal_url":"","created_at":"2024-02-11T07:05:59.665-08:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":51900448,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":41242533,"work_id":114758700,"tagging_user_id":51900448,"tagged_user_id":307097721,"co_author_invite_id":8084606,"email":"m***m@marmara.edu.tr","display_order":0,"name":"Murat Erdem","title":"Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy"},{"id":41242534,"work_id":114758700,"tagging_user_id":51900448,"tagged_user_id":194671682,"co_author_invite_id":null,"email":"n***3@yandex.com","display_order":1073741824,"name":"Necmettin Aktı","title":"Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy"},{"id":41242535,"work_id":114758700,"tagging_user_id":51900448,"tagged_user_id":290871916,"co_author_invite_id":null,"email":"l***2@outlook.com","display_order":1610612736,"name":"Leyla Akay","title":"Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy"},{"id":41242536,"work_id":114758700,"tagging_user_id":51900448,"tagged_user_id":null,"co_author_invite_id":5193426,"email":"c***v@marmara.edu.tr","display_order":1879048192,"name":"Cumali Tav","title":"Investigation of Nd3+:Y2Si2O7 Phosphors Using Photoluminescence and Positron Annihilation Lifetime Spectroscopy"}],"downloadable_attachments":[],"slug":"Investigation_of_Nd3_Y2Si2O7_Phosphors_Using_Photoluminescence_and_Positron_Annihilation_Lifetime_Spectroscopy","translated_slug":"","page_count":null,"language":"en","content_type":"Work","owner":{"id":51900448,"first_name":"UGUR","middle_initials":null,"last_name":"YAHSI","page_name":"UYAHSI","domain_name":"marmara","created_at":"2016-08-10T02:31:12.230-07:00","display_name":"UGUR YAHSI","url":"https://marmara.academia.edu/UYAHSI"},"attachments":[],"research_interests":[],"urls":[{"id":39367086,"url":"https://iopscience.iop.org/article/10.1149/2162-8777/acf0e9/pdf"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="114758699"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/114758699/Role_of_free_volume_in_mechanical_behaviors_of_side_chain_lcp_grafted_products_of_high_density_polyethylene"><img alt="Research paper thumbnail of Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/114758699/Role_of_free_volume_in_mechanical_behaviors_of_side_chain_lcp_grafted_products_of_high_density_polyethylene">Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/UYAHSI">UGUR YAHSI</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/SoykanU">U. Soykan</a></span></div><div class="wp-workCard_item"><span>Journal of Polymer Research</span><span>, 2021</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The monomer, p-benzophenoneoxycarbonylphenyl methacrylate (BPOCPMA) the polymer of which exhibit ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The monomer, p-benzophenoneoxycarbonylphenyl methacrylate (BPOCPMA) the polymer of which exhibit mesomorphic behavior as side chain LCP has been graft copolymerized onto high density polyethylene (HDPE) in order to improve its properties. The PALS analysis of the products displayed that the graft copolymerization, while led to relatively small increase in the free volume size at low percentages of poly(BPOCPMA), resulted in decreases in the size and fraction of the free volume with the increase of poly(BPOCPMA) content. The graft copolymerization gave rise to remarkable improvements in the mechanical properties, especially in tensile strength and modulus, and the improvements were accompanied by the decreases in the free volume fraction. SEM analysis of the fracture surfaces of the mechanical test samples displayed a gradual transition from ductile fracture at low graft contents to brittle nature dominated at high percentages of poly(BPOCPMA). The XRD analysis showed significant expansions in the lateral dimensions (a and b parameters) of the orthorhombic unit cell in the crystalline domains of HDPE matrix, in consistence with poly(BPOCPMA) content. The grafting also gave rise to noteworthy increases in the crystalline melting temperature of the HDPE.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="114758699"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="114758699"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 114758699; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=114758699]").text(description); $(".js-view-count[data-work-id=114758699]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 114758699; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='114758699']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 114758699, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=114758699]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":114758699,"title":"Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene","translated_title":"","metadata":{"abstract":"The monomer, p-benzophenoneoxycarbonylphenyl methacrylate (BPOCPMA) the polymer of which exhibit mesomorphic behavior as side chain LCP has been graft copolymerized onto high density polyethylene (HDPE) in order to improve its properties. The PALS analysis of the products displayed that the graft copolymerization, while led to relatively small increase in the free volume size at low percentages of poly(BPOCPMA), resulted in decreases in the size and fraction of the free volume with the increase of poly(BPOCPMA) content. The graft copolymerization gave rise to remarkable improvements in the mechanical properties, especially in tensile strength and modulus, and the improvements were accompanied by the decreases in the free volume fraction. SEM analysis of the fracture surfaces of the mechanical test samples displayed a gradual transition from ductile fracture at low graft contents to brittle nature dominated at high percentages of poly(BPOCPMA). The XRD analysis showed significant expansions in the lateral dimensions (a and b parameters) of the orthorhombic unit cell in the crystalline domains of HDPE matrix, in consistence with poly(BPOCPMA) content. The grafting also gave rise to noteworthy increases in the crystalline melting temperature of the HDPE.","publisher":"Springer Science and Business Media LLC","publication_date":{"day":null,"month":null,"year":2021,"errors":{}},"publication_name":"Journal of Polymer Research"},"translated_abstract":"The monomer, p-benzophenoneoxycarbonylphenyl methacrylate (BPOCPMA) the polymer of which exhibit mesomorphic behavior as side chain LCP has been graft copolymerized onto high density polyethylene (HDPE) in order to improve its properties. The PALS analysis of the products displayed that the graft copolymerization, while led to relatively small increase in the free volume size at low percentages of poly(BPOCPMA), resulted in decreases in the size and fraction of the free volume with the increase of poly(BPOCPMA) content. The graft copolymerization gave rise to remarkable improvements in the mechanical properties, especially in tensile strength and modulus, and the improvements were accompanied by the decreases in the free volume fraction. SEM analysis of the fracture surfaces of the mechanical test samples displayed a gradual transition from ductile fracture at low graft contents to brittle nature dominated at high percentages of poly(BPOCPMA). The XRD analysis showed significant expansions in the lateral dimensions (a and b parameters) of the orthorhombic unit cell in the crystalline domains of HDPE matrix, in consistence with poly(BPOCPMA) content. The grafting also gave rise to noteworthy increases in the crystalline melting temperature of the HDPE.","internal_url":"https://www.academia.edu/114758699/Role_of_free_volume_in_mechanical_behaviors_of_side_chain_lcp_grafted_products_of_high_density_polyethylene","translated_internal_url":"","created_at":"2024-02-11T07:05:58.481-08:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":51900448,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":41494566,"work_id":114758699,"tagging_user_id":51900448,"tagged_user_id":null,"co_author_invite_id":7555574,"email":"b***n@kemerburgaz.edu.tr","display_order":0,"name":"Behiye Sen","title":"Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene"},{"id":41494567,"work_id":114758699,"tagging_user_id":51900448,"tagged_user_id":204436739,"co_author_invite_id":null,"email":"s***n@yyu.edu.tr","display_order":1073741824,"name":"sedat Çetin","title":"Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene"},{"id":41494568,"work_id":114758699,"tagging_user_id":51900448,"tagged_user_id":311382272,"co_author_invite_id":8119983,"email":"u***n@ibu.edu.tr","display_order":1610612736,"name":"U. Soykan","title":"Role of free volume in mechanical behaviors of side chain lcp grafted products of high density polyethylene"}],"downloadable_attachments":[],"slug":"Role_of_free_volume_in_mechanical_behaviors_of_side_chain_lcp_grafted_products_of_high_density_polyethylene","translated_slug":"","page_count":null,"language":"en","content_type":"Work","owner":{"id":51900448,"first_name":"UGUR","middle_initials":null,"last_name":"YAHSI","page_name":"UYAHSI","domain_name":"marmara","created_at":"2016-08-10T02:31:12.230-07:00","display_name":"UGUR YAHSI","url":"https://marmara.academia.edu/UYAHSI"},"attachments":[],"research_interests":[{"id":56,"name":"Materials Engineering","url":"https://www.academia.edu/Documents/in/Materials_Engineering"},{"id":511,"name":"Materials 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href="https://www.academia.edu/114758686/Effect_of_Tacticity_on_Viscosity_Hole_Fraction_Behavior_of_Atactic_and_Syndiotactic_Polystyrenes">Effect of Tacticity on Viscosity-Hole Fraction Behavior of Atactic and Syndiotactic Polystyrenes</a></div><div class="wp-workCard_item"><span>Journal of the Turkish Chemical Society, Section A: Chemistry</span><span>, Jan 30, 2015</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="4b268f6f57261ae332fbc654e276dc17" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":111367596,"asset_id":114758686,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/111367596/download_file?st=MTczMjQwNjE3Myw4LjIyMi4yMDguMTQ2&st=MTczMjQwNjE3Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action 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class="js-work-strip profile--work_container" data-work-id="105063397"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/105063397/Structural_and_dielectrical_properties_of_PMMA_TiO2_composites_in_terms_of_free_volume_defects_probed_by_positron_annihilation_lifetime_spectroscopy"><img alt="Research paper thumbnail of Structural and dielectrical properties of PMMA/TiO2 composites in terms of free volume defects probed by positron annihilation lifetime spectroscopy" class="work-thumbnail" src="https://attachments.academia-assets.com/104621073/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/105063397/Structural_and_dielectrical_properties_of_PMMA_TiO2_composites_in_terms_of_free_volume_defects_probed_by_positron_annihilation_lifetime_spectroscopy">Structural and dielectrical properties of PMMA/TiO2 composites in terms of free volume defects probed by positron annihilation lifetime spectroscopy</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/KadirEsmer">Kadir Esmer</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/UYAHSI">UGUR YAHSI</a></span></div><div class="wp-workCard_item"><span>Polymers and Polymer Composites</span><span>, 2020</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">A suspension of ultrasonically agitated Titanium dioxide micrometer-sized powder has been introdu...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">A suspension of ultrasonically agitated Titanium dioxide micrometer-sized powder has been introduced into a poly(methyl methacrylate) (PMMA) matrix by solvent (CHCl3) mixing under slow mechanical stirring, and the resulting suspension was used to cast free-standing PMMA/TiO2 composite films. Filler contents from 0 wt% to 7.5 wt% were selected, since TiO2 particles could not be previously suspended in chloroform at higher concentrations by ultrasonic agitation. Optical and dielectric properties of composites were determined by ultraviolet (UV)-visible and dielectric spectrometry. In the UV region, 450% improvement of UV absorption was achieved in the TiO2/PMMA composite compared with neat PMMA. The structural properties and hole-free volume of the composites were determined by X-ray diffractometry and positron annihilation lifetime spectroscopy, respectively. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="94743811"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/94743811/Analysis_of_positron_lifetime_spectra_using_Bayesian_inference"><img alt="Research paper thumbnail of Analysis of positron lifetime spectra using Bayesian inference" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/94743811/Analysis_of_positron_lifetime_spectra_using_Bayesian_inference">Analysis of positron lifetime spectra using Bayesian inference</a></div><div class="wp-workCard_item"><span>2nd IET International Conference on Intelligent Signal Processing 2015 (ISP)</span><span>, 2015</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Positron annihilation is a well-established technique for producing spectra which can be analyzed...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Positron annihilation is a well-established technique for producing spectra which can be analyzed for extracting physically meaningful parameters that characterize material defects and vacancies on an atomic scale. Mathematically, this is based on fitting a parameter-dependent model to the experimental data. Traditionally, this fit involves local nonlinear optimization routines that depend on a reasonable initial guess for the searched parameters. Therefore, very different sets of parameters may yield indistinguishably good fits for a given experimental spectrum but, give rise to ambiguities in data analysis. In order to alleviate them, a computer program has been developed for analyzing positron lifetime spectra by incorporating a global nonlinear optimization routine based on Simulated annealing (SA) into the Markov chain Monte-Carlo Bayesian inference algorithm (MCMC-BI) so that it provides a robust fitting tool and yields information on the reliability of the results. 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It is tested against experimental spectra, comparing the results with those from the well-established commercial programs.","publisher":"Institution of Engineering and Technology","publication_date":{"day":null,"month":null,"year":2015,"errors":{}},"publication_name":"2nd IET International Conference on Intelligent Signal Processing 2015 (ISP)"},"translated_abstract":"Positron annihilation is a well-established technique for producing spectra which can be analyzed for extracting physically meaningful parameters that characterize material defects and vacancies on an atomic scale. Mathematically, this is based on fitting a parameter-dependent model to the experimental data. Traditionally, this fit involves local nonlinear optimization routines that depend on a reasonable initial guess for the searched parameters. Therefore, very different sets of parameters may yield indistinguishably good fits for a given experimental spectrum but, give rise to ambiguities in data analysis. 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It is tested against experimental spectra, comparing the results with those from the well-established commercial programs.","internal_url":"https://www.academia.edu/94743811/Analysis_of_positron_lifetime_spectra_using_Bayesian_inference","translated_internal_url":"","created_at":"2023-01-10T19:31:45.644-08:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":51900448,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":41843965,"work_id":94743811,"tagging_user_id":51900448,"tagged_user_id":null,"co_author_invite_id":8170325,"email":"d***g@marmara.edu.tr","display_order":0,"name":"Dursun Üstündağ","title":"Analysis of positron lifetime spectra using Bayesian inference"}],"downloadable_attachments":[],"slug":"Analysis_of_positron_lifetime_spectra_using_Bayesian_inference","translated_slug":"","page_count":null,"language":"en","content_type":"Work","owner":{"id":51900448,"first_name":"UGUR","middle_initials":null,"last_name":"YAHSI","page_name":"UYAHSI","domain_name":"marmara","created_at":"2016-08-10T02:31:12.230-07:00","display_name":"UGUR YAHSI","url":"https://marmara.academia.edu/UYAHSI"},"attachments":[],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering"},{"id":422,"name":"Computer Science","url":"https://www.academia.edu/Documents/in/Computer_Science"},{"id":6421,"name":"Simulated Annealing","url":"https://www.academia.edu/Documents/in/Simulated_Annealing"},{"id":18574,"name":"Inference","url":"https://www.academia.edu/Documents/in/Inference"},{"id":26817,"name":"Algorithm","url":"https://www.academia.edu/Documents/in/Algorithm"},{"id":85262,"name":"Markov Chain Monte Carlo","url":"https://www.academia.edu/Documents/in/Markov_Chain_Monte_Carlo"},{"id":584725,"name":"Positron","url":"https://www.academia.edu/Documents/in/Positron"},{"id":1032783,"name":"Bayesian Probability","url":"https://www.academia.edu/Documents/in/Bayesian_Probability"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="94743808"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/94743808/Optical_and_photoluminescence_spectroscopy_analysis_and_Doppler_broadening_annihilation_radiation_studies_of_perovskites_based_on_La1_XNiXMnO2_75_thin_layers"><img alt="Research paper thumbnail of Optical and photoluminescence spectroscopy analysis and Doppler broadening annihilation radiation studies of perovskites based on La1-XNiXMnO2.75 thin layers" class="work-thumbnail" src="https://attachments.academia-assets.com/97117096/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/94743808/Optical_and_photoluminescence_spectroscopy_analysis_and_Doppler_broadening_annihilation_radiation_studies_of_perovskites_based_on_La1_XNiXMnO2_75_thin_layers">Optical and photoluminescence spectroscopy analysis and Doppler broadening annihilation radiation studies of perovskites based on La1-XNiXMnO2.75 thin layers</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://marmara.academia.edu/UYAHSI">UGUR YAHSI</a> and <a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/AAmina5">A. Amina</a></span></div><div class="wp-workCard_item"><span>Optik</span><span>, 2020</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="c709e067251d353a59de7906ff89c731" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":97117096,"asset_id":94743808,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/97117096/download_file?st=MTczMjQwNjE3Myw4LjIyMi4yMDguMTQ2&st=MTczMjQwNjE3Myw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="94743808"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="94743808"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 94743808; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=94743808]").text(description); $(".js-view-count[data-work-id=94743808]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 94743808; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='94743808']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 94743808, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "c709e067251d353a59de7906ff89c731" } } $('.js-work-strip[data-work-id=94743808]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":94743808,"title":"Optical and photoluminescence spectroscopy analysis and Doppler broadening annihilation radiation studies of perovskites based on La1-XNiXMnO2.75 thin layers","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="88081729"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/88081729/Free_volume_vacancy_behaviour_and_dynamic_viscosity_of_diesel_fuels_with_additives_at_elevated_temperature_and_pressure_thermo_occupancy_function"><img alt="Research paper thumbnail of Free volume vacancy behaviour and dynamic viscosity of diesel fuels with additives at elevated temperature and pressure: thermo-occupancy function" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" rel="nofollow" href="https://www.academia.edu/88081729/Free_volume_vacancy_behaviour_and_dynamic_viscosity_of_diesel_fuels_with_additives_at_elevated_temperature_and_pressure_thermo_occupancy_function">Free volume vacancy behaviour and dynamic viscosity of diesel fuels with additives at elevated temperature and pressure: thermo-occupancy function</a></div><div class="wp-workCard_item"><span>International Journal of Oil, Gas and Coal Technology</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="88081729"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="88081729"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 88081729; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="88081728"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/88081728/Heavy_ion_irradiation_induced_defects_in_Zircaloy_4"><img alt="Research paper thumbnail of Heavy ion irradiation induced defects in Zircaloy-4" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/88081728/Heavy_ion_irradiation_induced_defects_in_Zircaloy_4">Heavy ion irradiation induced defects in Zircaloy-4</a></div><div class="wp-workCard_item"><span>Physica Scripta</span><span>, 2021</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Radiation damage induced in Zircaloy-4 by 20 MeV Au ions was investigated using Grazing x-ray dif...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Radiation damage induced in Zircaloy-4 by 20 MeV Au ions was investigated using Grazing x-ray diffraction (GIXRD), positron annihilation techniques, micro-and nano-hardness techniques. The irradiations were performed at room temperature in the fluence range 1 × 1013–5 × 1014 ions cm−2 corresponding to 0.07–3.63 displacements per atom (dpa). The grazing incidence angle x-ray diffraction (GIXRD) revealed the presence of the hydride precipitates in the analyzed zircaloy-4. According to our experimental data it is found that the amount of these precipitates decreases after irradiation as emphasized by GIXRD and Positron Annihilation Lifetime Spectroscopy (PALS) results. The same data revealed also a zircaloy-4 swelling above a certain dose. From the combination of domain size/microstrain with the micro- and nano-hardness results, we conclude that the Zircaloy hardening is mainly due to the dislocation formation indicating the effect of the microstructure on the mechanical properties. Mo...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="88081728"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="88081728"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 88081728; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=88081728]").text(description); $(".js-view-count[data-work-id=88081728]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 88081728; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='88081728']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 88081728, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=88081728]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":88081728,"title":"Heavy ion irradiation induced defects in Zircaloy-4","translated_title":"","metadata":{"abstract":"Radiation damage induced in Zircaloy-4 by 20 MeV Au ions was investigated using Grazing x-ray diffraction (GIXRD), positron annihilation techniques, micro-and nano-hardness techniques. The irradiations were performed at room temperature in the fluence range 1 × 1013–5 × 1014 ions cm−2 corresponding to 0.07–3.63 displacements per atom (dpa). The grazing incidence angle x-ray diffraction (GIXRD) revealed the presence of the hydride precipitates in the analyzed zircaloy-4. According to our experimental data it is found that the amount of these precipitates decreases after irradiation as emphasized by GIXRD and Positron Annihilation Lifetime Spectroscopy (PALS) results. The same data revealed also a zircaloy-4 swelling above a certain dose. From the combination of domain size/microstrain with the micro- and nano-hardness results, we conclude that the Zircaloy hardening is mainly due to the dislocation formation indicating the effect of the microstructure on the mechanical properties. 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