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Search results for: Zdeněk Skála
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class="col-md-9 mx-auto"> <form method="get" action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Zdeněk Skála"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 19</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Zdeněk Skála</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">19</span> Numerical Calculation of Heat Transfer in Water Heater</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Michal%20Spilacek">Michal Spilacek</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Lisy"> Martin Lisy</a>, <a href="https://publications.waset.org/abstracts/search?q=Marek%20Balas"> Marek Balas</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Skala"> Zdenek Skala</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article is trying to determine the status of flue gas that is entering the KWH heat exchanger from combustion chamber in order to calculate the heat transfer ratio of the heat exchanger. Combination of measurement, calculation, and computer simulation was used to create a useful way to approximate the heat transfer rate. The measurements were taken by a number of sensors that are mounted on the experimental device and by a thermal imaging camera. The results of the numerical calculation are in a good correspondence with the real power output of the experimental device. Results show that the research has a good direction and can be used to propose changes in the construction of the heat exchanger, but still needs enhancements. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heat%20exchanger" title="heat exchanger">heat exchanger</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer%20rate" title=" heat transfer rate"> heat transfer rate</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20calculation" title=" numerical calculation"> numerical calculation</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20images" title=" thermal images"> thermal images</a> </p> <a href="https://publications.waset.org/abstracts/26000/numerical-calculation-of-heat-transfer-in-water-heater" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26000.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">616</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18</span> Atmospheric Fluid Bed Gasification of Different Biomass Fuels</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Martin%20Lis%C3%BD">Martin Lisý</a>, <a href="https://publications.waset.org/abstracts/search?q=Marek%20Bal%C3%A1%C5%A1"> Marek Baláš</a>, <a href="https://publications.waset.org/abstracts/search?q=Michal%20%C5%A0pil%C3%A1%C4%8Dek"> Michal Špiláček</a>, <a href="https://publications.waset.org/abstracts/search?q=Zden%C4%9Bk%20Sk%C3%A1la"> Zdeněk Skála</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper shortly describes biomass types and growing amount in the Czech Republic. The considerable part of this paper deals with energy parameters of the most frequent utilizing biomass types and results of their gasification testing. There was chosen sixteen the most exploited "Czech" woody plants and grasses. There were determinated raw, element and biochemical analysis, basic calorimetric values, ash composition and ash characteristic temperatures. After that, each biofuel was tested by fluid bed gasification. The essential part of this paper yields results of chosen biomass types gasification experiments. Partly, there are described an operating conditions in detail with accentuation of individual fuels particularities partly, there is summarized gas composition and impurities content. The essential difference was determined mainly between woody plants and grasses both from point of view of the operating conditions and gas quality. The woody plants was evaluated as more suitable fuels for fluid bed gasifiers. This results will be able to significantly help with decision which energy plants are suitable for growing or with optimal biomass-treatment technology selection. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomass%20growing" title="biomass growing">biomass growing</a>, <a href="https://publications.waset.org/abstracts/search?q=biomass%20types" title=" biomass types"> biomass types</a>, <a href="https://publications.waset.org/abstracts/search?q=gasification" title=" gasification"> gasification</a>, <a href="https://publications.waset.org/abstracts/search?q=biomass%20fuels" title=" biomass fuels"> biomass fuels</a> </p> <a href="https://publications.waset.org/abstracts/26722/atmospheric-fluid-bed-gasification-of-different-biomass-fuels" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26722.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">572</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17</span> EZOB Technology, Biomass Gasification, and Microcogeneration Unit</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Martin%20Lis%C3%BD">Martin Lisý</a>, <a href="https://publications.waset.org/abstracts/search?q=Marek%20Bal%C3%A1%C5%A1"> Marek Baláš</a>, <a href="https://publications.waset.org/abstracts/search?q=Michal%20%C5%A0pil%C3%A1%C4%8Dek"> Michal Špiláček</a>, <a href="https://publications.waset.org/abstracts/search?q=Zden%C4%9Bk%20Sk%C3%A1la"> Zdeněk Skála</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper deals with the issue of biomass and sorted municipal waste gasification and cogeneration using hot air turbo set. It brings description of designed pilot plant with electrical output 80 kWe. The generated gas is burned in secondary combustion chamber located beyond the gas generator. Flue gas flows through the heat exchanger where the compressed air is heated and consequently brought to a micro turbine. Except description, this paper brings our basic experiences from operating of pilot plant (operating parameters, contributions, problems during operating, etc.). The principal advantage of the given cycle is the fact that there is no contact between the generated gas and the turbine. So there is no need for costly and complicated gas cleaning which is the main source of operating problems in direct use in combustion engines because the content of impurities in the gas causes operation problems to the units due to clogging and tarring of working surfaces of engines and turbines, which may lead as far as serious damage to the equipment under operation. Another merit is the compact container package making installation of the facility easier or making it relatively more mobile. We imagine, this solution of cogeneration from biomass or waste can be suitable for small industrial or communal applications, for low output cogeneration. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomass" title="biomass">biomass</a>, <a href="https://publications.waset.org/abstracts/search?q=combustion" title=" combustion"> combustion</a>, <a href="https://publications.waset.org/abstracts/search?q=gasification" title=" gasification"> gasification</a>, <a href="https://publications.waset.org/abstracts/search?q=microcogeneration" title=" microcogeneration"> microcogeneration</a> </p> <a href="https://publications.waset.org/abstracts/13123/ezob-technology-biomass-gasification-and-microcogeneration-unit" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13123.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">330</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">16</span> Biomass Gasification and Microcogeneration Unit–EZOB Technology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Martin%20Lis%C3%BD">Martin Lisý</a>, <a href="https://publications.waset.org/abstracts/search?q=Marek%20Bal%C3%A1%C5%A1"> Marek Baláš</a>, <a href="https://publications.waset.org/abstracts/search?q=Michal%20%C5%A0pil%C3%A1%C4%8Dek"> Michal Špiláček</a>, <a href="https://publications.waset.org/abstracts/search?q=Zden%C4%9Bk%20Sk%C3%A1la"> Zdeněk Skála </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper deals with the issue of biomass and sorted municipal waste gasification and cogeneration using hot-air turbo-set. It brings description of designed pilot plant with electrical output 80 kWe. The generated gas is burned in secondary combustion chamber located beyond the gas generator. Flue gas flows through the heat exchanger where the compressed air is heated and consequently brought to a micro turbine. Except description, this paper brings our basic experiences from operating of pilot plant (operating parameters, contributions, problems during operating, etc.). The principal advantage of the given cycle is the fact that there is no contact between the generated gas and the turbine. So there is no need for costly and complicated gas cleaning which is the main source of operating problems in direct use in combustion engines because the content of impurities in the gas causes operation problems to the units due to clogging and tarring of working surfaces of engines and turbines, which may lead as far as serious damage to the equipment under operation. Another merit is the compact container package making installation of the facility easier or making it relatively more mobile. We imagine, this solution of cogeneration from biomass or waste can be suitable for small industrial or communal applications, for low output cogeneration. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomass" title="biomass">biomass</a>, <a href="https://publications.waset.org/abstracts/search?q=combustion" title=" combustion"> combustion</a>, <a href="https://publications.waset.org/abstracts/search?q=gasification" title=" gasification"> gasification</a>, <a href="https://publications.waset.org/abstracts/search?q=microcogeneration" title=" microcogeneration"> microcogeneration</a> </p> <a href="https://publications.waset.org/abstracts/15400/biomass-gasification-and-microcogeneration-unit-ezob-technology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15400.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">489</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15</span> Association of Mir-196a Expression in Esophageal Tissue with Barrett´s Esophagus and Esophageal Adenocarcinoma</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Petra%20Borilova%20Linhartova">Petra Borilova Linhartova</a>, <a href="https://publications.waset.org/abstracts/search?q=Michaela%20Ruckova"> Michaela Ruckova</a>, <a href="https://publications.waset.org/abstracts/search?q=Sabina%20Sevcikova"> Sabina Sevcikova</a>, <a href="https://publications.waset.org/abstracts/search?q=Natalie%20Mlcuchova"> Natalie Mlcuchova</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan%20Bohm"> Jan Bohm</a>, <a href="https://publications.waset.org/abstracts/search?q=Katerina%20Zukalova"> Katerina Zukalova</a>, <a href="https://publications.waset.org/abstracts/search?q=Monika%20Vlachova"> Monika Vlachova</a>, <a href="https://publications.waset.org/abstracts/search?q=Jiri%20Dolina"> Jiri Dolina</a>, <a href="https://publications.waset.org/abstracts/search?q=Lumir%20Kunovsky"> Lumir Kunovsky</a>, <a href="https://publications.waset.org/abstracts/search?q=Radek%20Kroupa"> Radek Kroupa</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Pavlovsky"> Zdenek Pavlovsky</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Danek"> Zdenek Danek</a>, <a href="https://publications.waset.org/abstracts/search?q=Tereza%20Deissova"> Tereza Deissova</a>, <a href="https://publications.waset.org/abstracts/search?q=Lydie%20Izakovicova%20Holla"> Lydie Izakovicova Holla</a>, <a href="https://publications.waset.org/abstracts/search?q=Ondrej%20Slaby">Ondrej Slaby</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Kala"> Zdenek Kala</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Esophageal adenocarcinoma (EAC) is a highly aggressive malignancy that frequently develops from Barrett's esophagus (BE), a premalignant pathologic change occurring in the lower end of the esophagus. Specific microRNAs (miRNAs), small non-coding RNAs that function as posttranscriptional regulators of gene expression, were repeatedly proved to play key roles in the pathogenesis of these diseases. This pilot study aimed to analyze four selected miRNAs in esophageal tissues from healthy controls (HC) and patients with reflux esophagitis (RE)/BE/EAC, as well as to compare expression at the site of Barrett's mucosa/adenocarcinoma and healthy esophageal tissue outside the area of the main pathology in patients with BE/EAC. In this pilot study, 22 individuals (3 HC, 8 RE, 5 BE, 6 EAC) were included and endoscopically examined. RNA was isolated from the fresh-frozen esophageal tissue (stored in the RNAlater™ Stabilization Solution −70°C) using the AllPrep DNA/RNA/miRNA Universal Kit. Subsequent RT-qPCR analysis was performed using selected TaqMan MicroRNA Assays for miR-21, miR-34a, miR-196a, miR-196b, and endogenous control (RNU44). While the expression of miR-21 in the esophageal tissue with the main pathology was decreased in BE and EAC patients in comparison to the group of HC and RE patients (p=0.01), the expression of miR-196a was increased in the BE and EAC patients (p<0.01). Correlations between those miRNAs expression in tissue and severity of diagnosis were observed (p<0.05). In addition, miR-196a was significantly more expressed at the site with the main pathology than in paired adjacent esophageal tissue in BE and EAC patients (p<0.01). In conclusion, our pilot results showed that miR-196a, which regulates the proliferation, invasion, and migration (and was previously associated with esophageal squamous cell carcinoma and marked as a potential therapeutic target), could be a diagnostic tissue biomarker for BE and EAC as well. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microRNA" title="microRNA">microRNA</a>, <a href="https://publications.waset.org/abstracts/search?q=barrett%C2%B4s%20esophagus" title=" barrett´s esophagus"> barrett´s esophagus</a>, <a href="https://publications.waset.org/abstracts/search?q=esophageal%20adenocarcinoma" title=" esophageal adenocarcinoma"> esophageal adenocarcinoma</a>, <a href="https://publications.waset.org/abstracts/search?q=biomarker" title=" biomarker"> biomarker</a> </p> <a href="https://publications.waset.org/abstracts/149454/association-of-mir-196a-expression-in-esophageal-tissue-with-barretts-esophagus-and-esophageal-adenocarcinoma" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149454.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">112</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> Expression Profiling and Immunohistochemical Analysis of Squamous Cell Carcinoma of Head and Neck (Tumor, Transition Zone, Normal) by Whole Genome Scale Sequencing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Veronika%20Zivicova">Veronika Zivicova</a>, <a href="https://publications.waset.org/abstracts/search?q=Petr%20Broz"> Petr Broz</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Fik"> Zdenek Fik</a>, <a href="https://publications.waset.org/abstracts/search?q=Alzbeta%20Mifkova"> Alzbeta Mifkova</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan%20Plzak"> Jan Plzak</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Cada"> Zdenek Cada</a>, <a href="https://publications.waset.org/abstracts/search?q=Herbert%20Kaltner"> Herbert Kaltner</a>, <a href="https://publications.waset.org/abstracts/search?q=Jana%20Fialova%20Kucerova"> Jana Fialova Kucerova</a>, <a href="https://publications.waset.org/abstracts/search?q=Hans-Joachim%20%20Gabius"> Hans-Joachim Gabius</a>, <a href="https://publications.waset.org/abstracts/search?q=Karel%20Smetana%20Jr."> Karel Smetana Jr. </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The possibility to determine genome-wide expression profiles of cells and tissues opens a new level of analysis in the quest to define dysregulation in malignancy and thus identify new tumor markers. Toward this long-term aim, we here address two issues on this level for head and neck cancer specimen: i) defining profiles in different regions, i.e. the tumor, the transition zone and normal control and ii) comparing complete data sets for seven individual patients. Special focus in the flanking immunohistochemical part is given to adhesion/growth-regulatory galectins that upregulate chemo- and cytokine expression in an NF-κB-dependent manner, to these regulators and to markers of differentiation, i.e. keratins. The detailed listing of up- and down-regulations, also available in printed form (1), not only served to unveil new candidates for testing as marker but also let the impact of the tumor in the transition zone become apparent. The extent of interindividual variation raises a strong cautionary note on assuming uniformity of regulatory events, to be noted when considering therapeutic implications. Thus, a combination of test targets (and a network analysis for galectins and their downstream effectors) is (are) advised prior to reaching conclusions on further perspectives. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=galectins" title="galectins">galectins</a>, <a href="https://publications.waset.org/abstracts/search?q=genome%20scale%20sequencing" title=" genome scale sequencing"> genome scale sequencing</a>, <a href="https://publications.waset.org/abstracts/search?q=squamous%20cell%20carcinoma" title=" squamous cell carcinoma"> squamous cell carcinoma</a>, <a href="https://publications.waset.org/abstracts/search?q=transition%20zone" title=" transition zone"> transition zone</a> </p> <a href="https://publications.waset.org/abstracts/75823/expression-profiling-and-immunohistochemical-analysis-of-squamous-cell-carcinoma-of-head-and-neck-tumor-transition-zone-normal-by-whole-genome-scale-sequencing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75823.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">239</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">13</span> Optical Flow Direction Determination for Railway Crossing Occupancy Monitoring</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Silar">Zdenek Silar</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Dobrovolny"> Martin Dobrovolny</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article deals with the obstacle detection on a railway crossing (clearance detection). Detection is based on the optical flow estimation and classification of the flow vectors by K-means clustering algorithm. For classification of passing vehicles is used optical flow direction determination. The optical flow estimation is based on a modified Lucas-Kanade method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=background%20estimation" title="background estimation">background estimation</a>, <a href="https://publications.waset.org/abstracts/search?q=direction%20of%20optical%20flow" title=" direction of optical flow"> direction of optical flow</a>, <a href="https://publications.waset.org/abstracts/search?q=K-means%20clustering" title=" K-means clustering"> K-means clustering</a>, <a href="https://publications.waset.org/abstracts/search?q=objects%20detection" title=" objects detection"> objects detection</a>, <a href="https://publications.waset.org/abstracts/search?q=railway%20crossing%20monitoring" title=" railway crossing monitoring"> railway crossing monitoring</a>, <a href="https://publications.waset.org/abstracts/search?q=velocity%20vectors" title=" velocity vectors"> velocity vectors</a> </p> <a href="https://publications.waset.org/abstracts/1853/optical-flow-direction-determination-for-railway-crossing-occupancy-monitoring" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1853.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">518</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">12</span> Embedded Hardware and Software Design of Omnidirectional Autonomous Robotic Platform Suitable for Advanced Driver Assistance Systems Testing with Focus on Modularity and Safety</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ondrej%20Lufinka">Ondrej Lufinka</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan%20Kaderabek"> Jan Kaderabek</a>, <a href="https://publications.waset.org/abstracts/search?q=Juraj%20Prstek"> Juraj Prstek</a>, <a href="https://publications.waset.org/abstracts/search?q=Jiri%20Skala"> Jiri Skala</a>, <a href="https://publications.waset.org/abstracts/search?q=Kamil%20Kosturik"> Kamil Kosturik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper deals with the problem of using Autonomous Robotic Platforms (ARP) for the ADAS (Advanced Driver Assistance Systems) testing in automotive. There are different possibilities of the testing already in development, and lately, the autonomous robotic platforms are beginning to be used more and more widely. Autonomous Robotic Platform discussed in this paper explores the hardware and software design possibilities related to the field of embedded systems. The paper focuses on its chapters on the introduction of the problem in general; then, it describes the proposed prototype concept and its principles from the embedded HW and SW point of view. It talks about the key features that can be used for the innovation of these platforms (e.g., modularity, omnidirectional movement, common and non-traditional sensors used for localization, synchronization of more platforms and cars together, or safety mechanisms). In the end, the future possible development of the project is discussed as well. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=advanced%20driver%20assistance%20systems" title="advanced driver assistance systems">advanced driver assistance systems</a>, <a href="https://publications.waset.org/abstracts/search?q=ADAS" title=" ADAS"> ADAS</a>, <a href="https://publications.waset.org/abstracts/search?q=autonomous%20robotic%20platform" title=" autonomous robotic platform"> autonomous robotic platform</a>, <a href="https://publications.waset.org/abstracts/search?q=embedded%20systems" title=" embedded systems"> embedded systems</a>, <a href="https://publications.waset.org/abstracts/search?q=hardware" title=" hardware"> hardware</a>, <a href="https://publications.waset.org/abstracts/search?q=localization" title=" localization"> localization</a>, <a href="https://publications.waset.org/abstracts/search?q=modularity" title=" modularity"> modularity</a>, <a href="https://publications.waset.org/abstracts/search?q=multiple%20robots%20synchronization" title=" multiple robots synchronization"> multiple robots synchronization</a>, <a href="https://publications.waset.org/abstracts/search?q=omnidirectional%20movement" title=" omnidirectional movement"> omnidirectional movement</a>, <a href="https://publications.waset.org/abstracts/search?q=safety%20mechanisms" title=" safety mechanisms"> safety mechanisms</a>, <a href="https://publications.waset.org/abstracts/search?q=software" title=" software"> software</a> </p> <a href="https://publications.waset.org/abstracts/130591/embedded-hardware-and-software-design-of-omnidirectional-autonomous-robotic-platform-suitable-for-advanced-driver-assistance-systems-testing-with-focus-on-modularity-and-safety" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130591.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">143</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> 2D and 3D Unsteady Simulation of the Heat Transfer in the Sample during Heat Treatment by Moving Heat Source</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zden%C4%9Bk%20Vesel%C3%BD">Zdeněk Veselý</a>, <a href="https://publications.waset.org/abstracts/search?q=Milan%20Honner"> Milan Honner</a>, <a href="https://publications.waset.org/abstracts/search?q=Ji%C5%99%C3%AD%20Mach"> Jiří Mach </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the performed work is to establish the 2D and 3D model of direct unsteady task of sample heat treatment by moving source employing computer model on the basis of finite element method. The complex boundary condition on heat loaded sample surface is the essential feature of the task. Computer model describes heat treatment of the sample during heat source movement over the sample surface. It is started from the 2D task of sample cross section as a basic model. Possibilities of extension from 2D to 3D task are discussed. The effect of the addition of third model dimension on the temperature distribution in the sample is showed. Comparison of various model parameters on the sample temperatures is observed. Influence of heat source motion on the depth of material heat treatment is shown for several velocities of the movement. Presented computer model is prepared for the utilization in laser treatment of machine parts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=computer%20simulation" title="computer simulation">computer simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=unsteady%20model" title=" unsteady model"> unsteady model</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20treatment" title=" heat treatment"> heat treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=complex%20boundary%20condition" title=" complex boundary condition"> complex boundary condition</a>, <a href="https://publications.waset.org/abstracts/search?q=moving%20heat%20source" title=" moving heat source"> moving heat source</a> </p> <a href="https://publications.waset.org/abstracts/32393/2d-and-3d-unsteady-simulation-of-the-heat-transfer-in-the-sample-during-heat-treatment-by-moving-heat-source" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32393.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">394</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">10</span> Optical Properties of Nanocrystalline Europium-Yttrium Titanate EuYTi2O7 </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20Mrazek">J. Mrazek</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Skala"> R. Skala</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Bysakh"> S. Bysakh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ivan%20Kasik"> Ivan Kasik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Lanthanide-doped yttrium titanium oxides, which crystallize in a pyrochlore structure with general formula (RExY1-x)2Ti2O7 (RE=rare earth element), have been extensively investigated in recent years for their interesting physical and chemical properties. Despite that the pure pyrochlore structure does not present luminescence ability, the presence of yttrium ions in the pyrochlore structure significantly improves the luminescence properties of the RE. Moreover, the luminescence properties of pyrochlores strongly depend on the size of formed nanocrystals. In this contribution, we present a versatile sol-gel synthesis of nanocrystalline EuYTi2O7pyrochlore. The nanocrystalline powders and thin films were prepared by the condensation of titanium(IV)butoxide with europium(III) chloride followed by the calcination. The introduced method leads to the formation of the highly-homogenous nanocrystalline EuYTi2O7 with tailored grain size ranging from 20 nm to 200 nm. The morphology and the structure of the formed nanocrystals are linked to the luminescence properties of Eu3+ ions incorporated into the pyrochlore lattice. The results of XRD and HRTEM analysis show that the Eu3+ and Y3+ ions are regularly distributed inside the lattice. The lifetime of Eu3+ ions in calcinated powders is regularly decreasing from 140 us to 68 us and the refractive index of prepared thin films regularly increases from 2.0 to 2.45 according to the calcination temperature. The shape of the luminescence spectra and the decrease of the lifetime correspond with the crystallinity of prepared powders. The results present fundamental information about the effect of the size of the nanocrystals to their luminescence properties. The promising application of prepared nanocrystals in the field of lasers and planar optical amplifiers is widely discussed in the contribution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=europium" title="europium">europium</a>, <a href="https://publications.waset.org/abstracts/search?q=luminescence" title=" luminescence"> luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocrystals" title=" nanocrystals"> nanocrystals</a>, <a href="https://publications.waset.org/abstracts/search?q=sol-gel" title=" sol-gel"> sol-gel</a> </p> <a href="https://publications.waset.org/abstracts/7471/optical-properties-of-nanocrystalline-europium-yttrium-titanate-euyti2o7" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7471.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">262</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">9</span> Particle and Photon Trajectories near the Black Hole Immersed in the Nonstatic Cosmological Background</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elena%20M.%20Kopteva">Elena M. Kopteva</a>, <a href="https://publications.waset.org/abstracts/search?q=Pavlina%20Jaluvkova"> Pavlina Jaluvkova</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Stuchlik"> Zdenek Stuchlik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The question of constructing a consistent model of the cosmological black hole remains to be unsolved and still attracts the interest of cosmologists as far as it is important in a wide set of research problems including the problem of the black hole horizon dynamics, the problem of interplay between cosmological expansion and local gravity, the problem of structure formation in the early universe etc. In this work, the model of the cosmological black hole is built on the basis of the exact solution of the Einstein equations for the spherically symmetric inhomogeneous dust distribution in the approach of the mass function use. Possible trajectories for massive particles and photons near the black hole immersed in the nonstatic dust cosmological background are investigated in frame of the obtained model. The reference system of distant galaxy comoving to cosmological expansion combined with curvature coordinates is used, so that the resulting metric becomes nondiagonal and involves both proper ‘cosmological’ time and curvature spatial coordinates. For this metric the geodesic equations are analyzed for the test particles and photons, and the respective trajectories are built. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=exact%20solutions%20for%20Einstein%20equations" title="exact solutions for Einstein equations">exact solutions for Einstein equations</a>, <a href="https://publications.waset.org/abstracts/search?q=Lemaitre-Tolman-Bondi%20solution" title=" Lemaitre-Tolman-Bondi solution"> Lemaitre-Tolman-Bondi solution</a>, <a href="https://publications.waset.org/abstracts/search?q=cosmological%20black%20holes" title=" cosmological black holes"> cosmological black holes</a>, <a href="https://publications.waset.org/abstracts/search?q=particle%20and%20photon%20trajectories" title=" particle and photon trajectories"> particle and photon trajectories</a> </p> <a href="https://publications.waset.org/abstracts/63353/particle-and-photon-trajectories-near-the-black-hole-immersed-in-the-nonstatic-cosmological-background" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63353.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">340</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8</span> Experimental Device for Fluorescence Measurement by Optical Fiber Combined with Dielectrophoretic Sorting in Microfluidic Chips</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jan%20Jezek">Jan Jezek</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Pilat"> Zdenek Pilat</a>, <a href="https://publications.waset.org/abstracts/search?q=Filip%20Smatlo"> Filip Smatlo</a>, <a href="https://publications.waset.org/abstracts/search?q=Pavel%20Zemanek"> Pavel Zemanek</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present a device that combines fluorescence spectroscopy with fiber optics and dielectrophoretic micromanipulation in PDMS (poly-(dimethylsiloxane)) microfluidic chips. The device allows high speed detection (in the order of kHz) of the fluorescence signal, which is coming from the sample by an inserted optical fiber, e.g. from a micro-droplet flow in a microfluidic chip, or even from the liquid flowing in the transparent capillary, etc. The device uses a laser diode at a wavelength suitable for excitation of fluorescence, excitation and emission filters, optics for focusing the laser radiation into the optical fiber, and a highly sensitive fast photodiode for detection of fluorescence. The device is combined with dielectrophoretic sorting on a chip for sorting of micro-droplets according to their fluorescence intensity. The electrodes are created by lift-off technology on a glass substrate, or by using channels filled with a soft metal alloy or an electrolyte. This device found its use in screening of enzymatic reactions and sorting of individual fluorescently labelled microorganisms. The authors acknowledge the support from the Grant Agency of the Czech Republic (GA16-07965S) and Ministry of Education, Youth and Sports of the Czech Republic (LO1212) together with the European Commission (ALISI No. CZ.1.05/2.1.00/01.0017). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dielectrophoretic%20sorting" title="dielectrophoretic sorting">dielectrophoretic sorting</a>, <a href="https://publications.waset.org/abstracts/search?q=fiber%20optics" title=" fiber optics"> fiber optics</a>, <a href="https://publications.waset.org/abstracts/search?q=laser" title=" laser"> laser</a>, <a href="https://publications.waset.org/abstracts/search?q=microfluidic%20chips" title=" microfluidic chips"> microfluidic chips</a>, <a href="https://publications.waset.org/abstracts/search?q=microdroplets" title=" microdroplets"> microdroplets</a>, <a href="https://publications.waset.org/abstracts/search?q=spectroscopy" title=" spectroscopy"> spectroscopy</a> </p> <a href="https://publications.waset.org/abstracts/68849/experimental-device-for-fluorescence-measurement-by-optical-fiber-combined-with-dielectrophoretic-sorting-in-microfluidic-chips" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68849.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">719</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">7</span> Effect of Tensile Strain on Microstructure of Irradiated Core Internal Material</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hygreeva%20Kiran%20Namburi">Hygreeva Kiran Namburi</a>, <a href="https://publications.waset.org/abstracts/search?q=Anna%20Hojna"> Anna Hojna</a>, <a href="https://publications.waset.org/abstracts/search?q=Edita%20Lecianova"> Edita Lecianova</a>, <a href="https://publications.waset.org/abstracts/search?q=Fencl%20Zdenek"> Fencl Zdenek</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Irradiation Assisted Stress Corrosion Cracking [IASCC] is one of the most significant environmental degradation in the internal components made from Austenitic stainless steel. This mechanism is still not fully understood and there are no suitable criteria for prediction of the damage during operation. In this work, core basket material 08Ch18N10T austenitic stainless steel acquired from decommissioned NPP Nord / Greifswald Unit 1, VVER 440-230 type, operated for 15 years and irradiated at 5.2 dpa is studied. This material was tensile tested at two different test temperatures and strain rates in air and at the elevated temperature under the water environment. SEM observations of the fracture surface documented ductile fracture of the samples tested in air, but areas of IASCC tested in water. This paper emphasizes on the microscopic examination results from the mechanically tested samples to determine the underlying IASCC physical damage process. TEM observations of thin foils made from the gauge sections that are closer to the fractured surface of the specimen aimed to find variances in interaction of dislocations and grain boundaries owing to different test conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=irradiation%20assisted%20stress%20corrosion%20cracking" title="irradiation assisted stress corrosion cracking">irradiation assisted stress corrosion cracking</a>, <a href="https://publications.waset.org/abstracts/search?q=core%20basket%20material" title=" core basket material"> core basket material</a>, <a href="https://publications.waset.org/abstracts/search?q=SEM%20observations%20of%20the%20fracture%20surface" title=" SEM observations of the fracture surface"> SEM observations of the fracture surface</a>, <a href="https://publications.waset.org/abstracts/search?q=microscopic%20examination%20results" title=" microscopic examination results"> microscopic examination results</a> </p> <a href="https://publications.waset.org/abstracts/36446/effect-of-tensile-strain-on-microstructure-of-irradiated-core-internal-material" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/36446.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">350</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6</span> The Generalized Lemaitre-Tolman-Bondi Solutions in Modeling the Cosmological Black Holes </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elena%20M.%20Kopteva">Elena M. Kopteva</a>, <a href="https://publications.waset.org/abstracts/search?q=Pavlina%20Jaluvkova"> Pavlina Jaluvkova</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Stuchlik"> Zdenek Stuchlik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In spite of the numerous attempts to close the discussion about the influence of cosmological expansion on local gravitationally bounded systems, this question arises in literature again and again and remains still far from its final resolution. Here one of the main problems is the problem of obtaining a physically adequate model of strongly gravitating object immersed in non-static cosmological background. Such objects are usually called ‘cosmological’ black holes and are of great interest in wide set of cosmological and astrophysical areas. In this work the set of new exact solutions of the Einstein equations is derived for the flat space that generalizes the known Lemaitre-Tolman-Bondi solution for the case of nonzero pressure. The solutions obtained are pretending to describe the black hole immersed in nonstatic cosmological background and give a possibility to investigate the hot problems concerning the effects of the cosmological expansion in gravitationally bounded systems, the structure formation in the early universe, black hole thermodynamics and other related problems. It is shown that each of the solutions obtained contains either the Reissner-Nordstrom or the Schwarzschild black hole in the central region of the space. It is demonstrated that the approach of the mass function use in solving of the Einstein equations allows clear physical interpretation of the resulting solutions, that is of much benefit to any their concrete application. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=exact%20solutions%20of%20the%20Einstein%20equations" title="exact solutions of the Einstein equations">exact solutions of the Einstein equations</a>, <a href="https://publications.waset.org/abstracts/search?q=cosmological%20black%20holes" title=" cosmological black holes"> cosmological black holes</a>, <a href="https://publications.waset.org/abstracts/search?q=generalized%20Lemaitre-Tolman-Bondi%20solutions" title=" generalized Lemaitre-Tolman-Bondi solutions"> generalized Lemaitre-Tolman-Bondi solutions</a>, <a href="https://publications.waset.org/abstracts/search?q=nonzero%20pressure" title=" nonzero pressure"> nonzero pressure</a> </p> <a href="https://publications.waset.org/abstracts/63654/the-generalized-lemaitre-tolman-bondi-solutions-in-modeling-the-cosmological-black-holes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63654.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">423</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">5</span> Advanced Biosensor Characterization of Phage-Mediated Lysis in Real-Time and under Native Conditions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Radka%20Obo%C5%99ilov%C3%A1">Radka Obořilová</a>, <a href="https://publications.waset.org/abstracts/search?q=Hana%20%C5%A0ime%C4%8Dkov%C3%A1"> Hana Šimečková</a>, <a href="https://publications.waset.org/abstracts/search?q=Mat%C4%9Bj%20Pastucha"> Matěj Pastucha</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan%20P%C5%99ibyl"> Jan Přibyl</a>, <a href="https://publications.waset.org/abstracts/search?q=Petr%20Skl%C3%A1dal"> Petr Skládal</a>, <a href="https://publications.waset.org/abstracts/search?q=Ivana%20Ma%C5%A1la%C5%88ov%C3%A1"> Ivana Mašlaňová</a>, <a href="https://publications.waset.org/abstracts/search?q=Zden%C4%9Bk%20Farka"> Zdeněk Farka</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Due to the spreading of antimicrobial resistance, alternative approaches to combat superinfections are being sought, both in the field of lysing agents and methods for studying bacterial lysis. A suitable alternative to antibiotics is phage therapy and enzybiotics, for which it is also necessary to study the mechanism of their action. Biosensor-based techniques allow rapid detection of pathogens in real time, verification of sensitivity to commonly used antimicrobial agents, and selection of suitable lysis agents. The detection of lysis takes place on the surface of the biosensor with immobilized bacteria, which has the potential to be used to study biofilms. An example of such a biosensor is surface plasmon resonance (SPR), which records the kinetics of bacterial lysis based on a change in the resonance angle. The bacteria are immobilized on the surface of the SPR chip, and the action of phage as the mass loss is monitored after a typical lytic cycle delay. Atomic force microscopy (AFM) is a technique for imaging of samples on the surface. In contrast to electron microscopy, it has the advantage of real-time imaging in the native conditions of the nutrient medium. In our case, Staphylococcus aureus was lysed using the enzyme lysostaphin and phage P68 from the familyPodoviridae at 37 ° C. In addition to visualization, AFM was used to study changes in mechanical properties during lysis, which resulted in a reduction of Young’s modulus (E) after disruption of the bacterial wall. Changes in E reflect the stiffness of the bacterium. These advanced methods provide deeper insight into bacterial lysis and can help to fight against bacterial diseases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biosensors" title="biosensors">biosensors</a>, <a href="https://publications.waset.org/abstracts/search?q=atomic%20force%20microscopy" title=" atomic force microscopy"> atomic force microscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20plasmon%20resonance" title=" surface plasmon resonance"> surface plasmon resonance</a>, <a href="https://publications.waset.org/abstracts/search?q=bacterial%20lysis" title=" bacterial lysis"> bacterial lysis</a>, <a href="https://publications.waset.org/abstracts/search?q=staphylococcus%20aureus" title=" staphylococcus aureus"> staphylococcus aureus</a>, <a href="https://publications.waset.org/abstracts/search?q=phage%20P68" title=" phage P68"> phage P68</a> </p> <a href="https://publications.waset.org/abstracts/144632/advanced-biosensor-characterization-of-phage-mediated-lysis-in-real-time-and-under-native-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144632.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">134</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4</span> Ion Beam Writing and Implantation in Graphene Oxide, Reduced Graphene Oxide and Polyimide Through Polymer Mask for Sensorics Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jan%20Luxa">Jan Luxa</a>, <a href="https://publications.waset.org/abstracts/search?q=Vlastimil%20Mazanek"> Vlastimil Mazanek</a>, <a href="https://publications.waset.org/abstracts/search?q=Petr%20Malinsky"> Petr Malinsky</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20Romanenko"> Alexander Romanenko</a>, <a href="https://publications.waset.org/abstracts/search?q=Mariapompea%20Cutroneo"> Mariapompea Cutroneo</a>, <a href="https://publications.waset.org/abstracts/search?q=Vladimir%20Havranek"> Vladimir Havranek</a>, <a href="https://publications.waset.org/abstracts/search?q=Josef%20Novak"> Josef Novak</a>, <a href="https://publications.waset.org/abstracts/search?q=Eva%20Stepanovska"> Eva Stepanovska</a>, <a href="https://publications.waset.org/abstracts/search?q=Anna%20Mackova"> Anna Mackova</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Sofer"> Zdenek Sofer</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Using accelerated energetic ions is an interesting method for the introduction of structural changes in various carbon-based materials. This way, the properties can be altered in two ways: a) the ions lead to the formation of conductive pathways in graphene oxide structures due to the elimination of oxygen functionalities and b) doping with selected ions to form metal nanoclusters, thus increasing the conductivity. In this work, energetic beams were employed in two ways to prepare capacitor structures in graphene oxide (GO), reduced graphene oxide (rGO) and polyimide (PI) on a micro-scale. The first method revolved around using ion beam writing with a focused ion beam, and the method involved ion implantation via a polymeric mask. To prepare the polymeric mask, a direct spin-coating of PMMA on top of the foils was used. Subsequently, proton beam writing and development in isopropyl alcohol were employed. Finally, the mask was removed using acetone solvent. All three materials were exposed to ion beams with an energy of 2.5-5 MeV and an ion fluence of 3.75x10¹⁴ cm-² (1800 nC.mm-²). Thus, prepared microstructures were thoroughly characterized by various analytical methods, including Scanning electron microscopy (SEM) with Energy-Dispersive X-ray spectroscopy (EDS), X-ray Photoelectron spectroscopy (XPS), micro-Raman spectroscopy, Rutherford Back-scattering Spectroscopy (RBS) and Elastic Recoil Detection Analysis (ERDA) spectroscopy. Finally, these materials were employed and tested as sensors for humidity using electrical conductivity measurements. The results clearly demonstrate that the type of ions, their energy and fluence all have a significant influence on the sensory properties of thus prepared sensors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=graphene" title="graphene">graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene%20oxide" title=" graphene oxide"> graphene oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=polyimide" title=" polyimide"> polyimide</a>, <a href="https://publications.waset.org/abstracts/search?q=ion%20implantation" title=" ion implantation"> ion implantation</a>, <a href="https://publications.waset.org/abstracts/search?q=sensors" title=" sensors"> sensors</a> </p> <a href="https://publications.waset.org/abstracts/174278/ion-beam-writing-and-implantation-in-graphene-oxide-reduced-graphene-oxide-and-polyimide-through-polymer-mask-for-sensorics-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/174278.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">85</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3</span> Rate of Force Development, Net Impulse and Modified Reactive Strength as Predictors of Volleyball Spike Jump Height among Young Elite Players</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Javad%20Sarvestan">Javad Sarvestan</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Svoboda"> Zdenek Svoboda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Force-time (F-T) curvature characteristics are globally referenced as the main indicators of athletic jump performance. Nevertheless, to the best of authors’ knowledge, no investigation tried to deeply study the relationship between F-T curve variables and real-game jump performance among elite volleyball players. To this end, this study was designated to investigate the association between F-T curve variables, including movement timings, force, velocity, power, rate of force development (RFD), modified reactive strength index (RSImod), and net impulse with spike jump height during real-game circumstances. Twelve young elite volleyball players performed 3 countermovement jump (CMJ) and 3 spike jump in real-game circumstances with 1-minute rest intervals to prevent fatigue. Shapiro-Wilk statistical test illustrated the normality of data distribution, and Pearson’s product correlation test portrayed a significant correlation between CMJ height and peak RFD (0.85), average RFD (r=0.81), RSImod (r=0.88) and concentric net impulse (r=0.98), and also significant correlation between spike jump height and peak RFD (0.73), average RFD (r=0.80), RSImod (r=0.62) and concentric net impulse (r=0.71). Multiple regression analysis also reported that these factors have a strong contribution in predicting of CMJ (98%) and spike jump (77%) heights. Outcomes of this study confirm that the RFD, concentric net impulse, and RSImod values could precisely monitor and track the volleyball attackers’ explosive strength, muscular stretch-shortening cycle function efficiency, and ultimate spike jump height. To this effect, volleyball coaches and trainers are advised to have an in-depth focus on their athletes’ progression or the impacts of strength trainings by observing and chasing the F-T curve variables such as RFD, net impulse, and RSImod. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=net%20impulse" title="net impulse">net impulse</a>, <a href="https://publications.waset.org/abstracts/search?q=reactive%20strength%20index" title=" reactive strength index"> reactive strength index</a>, <a href="https://publications.waset.org/abstracts/search?q=rate%20of%20force%20development" title=" rate of force development"> rate of force development</a>, <a href="https://publications.waset.org/abstracts/search?q=stretch-shortening%20cycle" title=" stretch-shortening cycle"> stretch-shortening cycle</a> </p> <a href="https://publications.waset.org/abstracts/120356/rate-of-force-development-net-impulse-and-modified-reactive-strength-as-predictors-of-volleyball-spike-jump-height-among-young-elite-players" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120356.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">135</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2</span> An Inquiry on Imaging of Soft Tissues in Micro-Computed Tomography</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Matej%20Patzelt">Matej Patzelt</a>, <a href="https://publications.waset.org/abstracts/search?q=Jana%20Mrzilkova"> Jana Mrzilkova</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan%20Dudak"> Jan Dudak</a>, <a href="https://publications.waset.org/abstracts/search?q=Frantisek%20Krejci"> Frantisek Krejci</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan%20Zemlicka"> Jan Zemlicka</a>, <a href="https://publications.waset.org/abstracts/search?q=Zdenek%20Wurst"> Zdenek Wurst</a>, <a href="https://publications.waset.org/abstracts/search?q=Petr%20Zach"> Petr Zach</a>, <a href="https://publications.waset.org/abstracts/search?q=Vladimir%20Musil"> Vladimir Musil</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Micro-CT is well used for examination of bone structures and teeth. On the other hand visualization of the soft tissues is still limited. The goal of our study was to elaborate methodology for soft tissue samples imaging in micro-CT. Methodology: We used organs of rats and mice. We either did a preparation of the organs and fixation in contrast solution or we did cannulation of blood vessels and their injection for imaging of the vascular system. First, we scanned native specimens, then we created corrosive specimens by resins. In the next step, we injected vascular system either by Aurovist contrast agent or by Exitron. In the next step, we focused on soft tissues contrast increase. We scanned samples fixated in Lugol solution, samples fixated in pure ethanol and in formaldehyde solution. All used methods were afterwards compared. Results: Native specimens did not provide sufficient contrast of the tissues in any of organs. Corrosive samples of the blood stream provided great contrast and details; on the other hand, it was necessary to destroy the organ. Further examined possibility was injection of the AuroVist contrast that leads to the great bloodstream contrast. Injection of Exitron contrast agent comparing to Aurovist did not provide such a great contrast. The soft tissues (kidney, heart, lungs, brain, and liver) were best visualized after fixation in ethanol. This type of fixation showed best results in all studied tissues. Lugol solution had great results in muscle tissue. Fixation by formaldehyde solution showed similar quality of contrast in the tissues like ethanol. Conclusion: Before imaging, we need to, first, determinate which structures of the soft tissues we want to visualize. In the case of the bloodstream, the best was AuroVist and corrosive specimens. Muscle tissue is best visualized by Lugol solution. In the case of the organs containing cavities, like kidneys or brain, the best way was ethanol fixation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=experimental%20imaging" title="experimental imaging">experimental imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=fixation" title=" fixation"> fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=micro-CT" title=" micro-CT"> micro-CT</a>, <a href="https://publications.waset.org/abstracts/search?q=soft%20tissues" title=" soft tissues"> soft tissues</a> </p> <a href="https://publications.waset.org/abstracts/51423/an-inquiry-on-imaging-of-soft-tissues-in-micro-computed-tomography" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51423.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">325</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1</span> Currently Use Pesticides: Fate, Availability, and Effects in Soils</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lucie%20Bielsk%C3%A1">Lucie Bielská</a>, <a href="https://publications.waset.org/abstracts/search?q=Lucia%20%C5%A0kulcov%C3%A1"> Lucia Škulcová</a>, <a href="https://publications.waset.org/abstracts/search?q=Martina%20Hv%C4%9Bzdov%C3%A1"> Martina Hvězdová</a>, <a href="https://publications.waset.org/abstracts/search?q=Jakub%20Hofman"> Jakub Hofman</a>, <a href="https://publications.waset.org/abstracts/search?q=Zden%C4%9Bk%20%C5%A0imek"> Zdeněk Šimek</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The currently used pesticides represent a broad group of chemicals with various physicochemical and environmental properties which input has reached 2×106 tons/year and is expected to even increases. From that amount, only 1% directly interacts with the target organism while the rest represents a potential risk to the environment and human health. Despite being authorized and approved for field applications, the effects of pesticides in the environment can differ from the model scenarios due to the various pesticide-soil interactions and resulting modified fate and behavior. As such, a direct monitoring of pesticide residues and evaluation of their impact on soil biota, aquatic environment, food contamination, and human health should be performed to prevent environmental and economic damages. The present project focuses on fluvisols as they are intensively used in the agriculture but face to several environmental stressors. Fluvisols develop in the vicinity of rivers by the periodic settling of alluvial sediments and periodic interruptions to pedogenesis by flooding. As a result, fluvisols exhibit very high yields per area unit, are intensively used and loaded by pesticides. Regarding the floods, their regular contacts with surface water arise from serious concerns about the surface water contamination. In order to monitor pesticide residues and assess their environmental and biological impact within this project, 70 fluvisols were sampled over the Czech Republic and analyzed for the total and bioaccessible amounts of 40 various pesticides. For that purpose, methodologies for the pesticide extraction and analysis with liquid chromatography-mass spectrometry technique were developed and optimized. To assess the biological risks, both the earthworm bioaccumulation tests and various types of passive sampling techniques (XAD resin, Chemcatcher, and silicon rubber) were optimized and applied. These data on chemical analysis and bioavailability were combined with the results of soil analysis, including the measurement of basic physicochemical soil properties as well detailed characterization of soil organic matter with the advanced method of diffuse reflectance infrared spectrometry. The results provide unique data on the residual levels of pesticides in the Czech Republic and on the factors responsible for increased pesticide residue levels that should be included in the modeling of pesticide fate and effects. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=currently%20used%20pesticides" title="currently used pesticides">currently used pesticides</a>, <a href="https://publications.waset.org/abstracts/search?q=fluvisoils" title=" fluvisoils"> fluvisoils</a>, <a href="https://publications.waset.org/abstracts/search?q=bioavailability" title=" bioavailability"> bioavailability</a>, <a href="https://publications.waset.org/abstracts/search?q=Quechers" title=" Quechers"> Quechers</a>, <a href="https://publications.waset.org/abstracts/search?q=liquid-chromatography-mass%20spectrometry" title=" liquid-chromatography-mass spectrometry"> liquid-chromatography-mass spectrometry</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20properties" title=" soil properties"> soil properties</a>, <a href="https://publications.waset.org/abstracts/search?q=DRIFT%20analysis" title=" DRIFT analysis"> DRIFT analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=pesticides" title=" pesticides "> pesticides </a> </p> <a href="https://publications.waset.org/abstracts/34371/currently-use-pesticides-fate-availability-and-effects-in-soils" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34371.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">464</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a 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