CINXE.COM

<!DOCTYPE html> <html lang="en" dir="ltr"> <head>  <script async src="https://www.googletagmanager.com/gtag/js?id=G-P63WKM1TM1"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-P63WKM1TM1'); </script>  <script type="text/javascript" > (function(m,e,t,r,i,k,a){m[i]=m[i]||function(){(m[i].a=m[i].a||[]).push(arguments)}; m[i].l=1*new Date(); for (var j = 0; j < document.scripts.length; j++) {if (document.scripts[j].src === r) { return; }} k=e.createElement(t),a=e.getElementsByTagName(t)[0],k.async=1,k.src=r,a.parentNode.insertBefore(k,a)}) (window, document, "script", "https://mc.yandex.ru/metrika/tag.js", "ym"); ym(55165297, "init", { clickmap:false, trackLinks:true, accurateTrackBounce:true, webvisor:false }); </script> <noscript><div><img src="https://mc.yandex.ru/watch/55165297" style="position:absolute; left:-9999px;" alt="" /></div></noscript>    <title>Search results for: yellow luminescence</title> <meta name="description" content="Search results for: yellow luminescence"> <meta name="keywords" content="yellow luminescence"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="yellow luminescence" name="q" aria-label="Search"> <button class="btn btn-light my-2 my-sm-0" type="submit"><i class="fas fa-search"></i></button> </form> </div> <div class="collapse navbar-collapse mt-1" id="navbarMenu"> <ul class="navbar-nav ml-auto align-items-center" id="mainNavMenu"> <li class="nav-item"> <a class="nav-link" href="https://waset.org/conferences" title="Conferences in 2024/2025/2026">Conferences</a> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/disciplines" title="Disciplines">Disciplines</a> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/committees" rel="nofollow">Committees</a> </li> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="#" id="navbarDropdownPublications" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Publications </a> <div class="dropdown-menu" aria-labelledby="navbarDropdownPublications"> <a class="dropdown-item" href="https://publications.waset.org/abstracts">Abstracts</a> <a class="dropdown-item" href="https://publications.waset.org">Periodicals</a> <a class="dropdown-item" href="https://publications.waset.org/archive">Archive</a> </div> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/page/support" title="Support">Support</a> </li> </ul> </div> </div> </nav> </div> </header> <main> <div class="container mt-4"> <div class="row"> <div 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="yellow luminescence"> <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> 391</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: yellow luminescence</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">391</span> Photoresponse of Epitaxial GaN Films Grown by Plasma-Assisted Molecular Beam Epitaxy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nisha%20Prakash">Nisha Prakash</a>, <a href="https://publications.waset.org/abstracts/search?q=Kritika%20Anand"> Kritika Anand</a>, <a href="https://publications.waset.org/abstracts/search?q=Arun%20Barvat"> Arun Barvat</a>, <a href="https://publications.waset.org/abstracts/search?q=Prabir%20Pal"> Prabir Pal</a>, <a href="https://publications.waset.org/abstracts/search?q=Sonachand%20Adhikari"> Sonachand Adhikari</a>, <a href="https://publications.waset.org/abstracts/search?q=Suraj%20P.%20Khanna"> Suraj P. Khanna</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Group-III nitride semiconductors (GaN, AlN, InN and their ternary and quaternary compounds) have attracted a great deal of attention for the development of high-performance Ultraviolet (UV) photodetectors. Any midgap defect states in the epitaxial grown film have a direct influence on the photodetectors responsivity. The proportion of the midgap defect states can be controlled by the growth parameters. To study this we have grown high quality epitaxial GaN films on MOCVD- grown GaN template using plasma-assisted molecular beam epitaxy (PAMBE) with different growth parameters. Optical and electrical properties of the films were characterized by room temperature photoluminescence and photoconductivity measurements, respectively. The observed persistent photoconductivity behaviour is proportional to the yellow luminescence (YL) and the absolute responsivity has been found to decrease with decreasing YL. The results will be discussed in more detail later. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gallium%20nitride" title="gallium nitride">gallium nitride</a>, <a href="https://publications.waset.org/abstracts/search?q=plasma-assisted%20molecular%20beam%20epitaxy" title=" plasma-assisted molecular beam epitaxy"> plasma-assisted molecular beam epitaxy</a>, <a href="https://publications.waset.org/abstracts/search?q=photoluminescence" title=" photoluminescence"> photoluminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=photoconductivity" title=" photoconductivity"> photoconductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=persistent%20photoconductivity" title=" persistent photoconductivity"> persistent photoconductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence" title=" yellow luminescence"> yellow luminescence</a> </p> <a href="https://publications.waset.org/abstracts/29135/photoresponse-of-epitaxial-gan-films-grown-by-plasma-assisted-molecular-beam-epitaxy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29135.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">317</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">390</span> Optically Active Material Based on Bi₂O₃@Yb³⁺, Nd³⁺ with High Intensity of Upconversion Luminescence in Red and Green Region</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20Artamonov">D. Artamonov</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Tsibulnikova"> A. Tsibulnikova</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Samusev"> I. Samusev</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Bryukhanov"> V. Bryukhanov</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Kozhevnikov"> A. Kozhevnikov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The synthesis and luminescent properties of Yb₂O₃, Nd₂O₃@Bi₂O₃ complex with upconversion generation are discussed in this work. The obtained samples were measured in the visible region of the spectrum under excitation with a wavelength of 980 nm. The studies showed that the obtained complexes have a high degree of stability and intense luminescence in the wavelength range of 400-750 nm. Consideration of the time dependence of the intensity of the upconversion luminescence allowed us to conclude that the enhancement of the intensity occurs in the time interval from 5 to 30 min, followed by the appearance of a stationary mode. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=lasers" title="lasers">lasers</a>, <a href="https://publications.waset.org/abstracts/search?q=luminescence" title=" luminescence"> luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=upconversion%20photonics" title=" upconversion photonics"> upconversion photonics</a>, <a href="https://publications.waset.org/abstracts/search?q=rare%20earth%20metals" title=" rare earth metals"> rare earth metals</a> </p> <a href="https://publications.waset.org/abstracts/167659/optically-active-material-based-on-bi2o3-at-yb3-nd3-with-high-intensity-of-upconversion-luminescence-in-red-and-green-region" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167659.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">82</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">389</span> Unconventional Dating of Old Peepal Tree of Chandigarh (India) Using Optically Stimulated Luminescence</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rita%20Rani">Rita Rani</a>, <a href="https://publications.waset.org/abstracts/search?q=Ramesh%20Kumar"> Ramesh Kumar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The intend of the current study is to date an old grand Peepal tree that is still alive. The tree is situated in Kalibard village, Sector 9, Chandigarh (India). Due to its huge structure, it has got the status of ‘Heritage tree.’ Optically Stimulated Luminescence of sediments beneath the roots is used to determine the age of the tree. Optical dating is preferred over conventional dating methods due to more precession. The methodology includes OSL of quartz grain using SAR protocol for accumulated dose measurement. The age determination of an alive tree using sedimentary quartz is in close agreement with the approximated age provided by the related agency. This is the first attempt at using optically stimulated luminescence in the age determination of alive trees in this region. The study concludes that the Luminescence dating of alive trees is the nondestructive and more precise method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=luminescence" title="luminescence">luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=dose%20rate" title=" dose rate"> dose rate</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20dating" title=" optical dating"> optical dating</a>, <a href="https://publications.waset.org/abstracts/search?q=sediments" title=" sediments"> sediments</a> </p> <a href="https://publications.waset.org/abstracts/140440/unconventional-dating-of-old-peepal-tree-of-chandigarh-india-using-optically-stimulated-luminescence" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140440.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">176</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">388</span> Spectroscopic Studies of Dy³⁺ Ions in Alkaline-Earth Boro Tellurite Glasses for Optoelectronic Devices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Swapna">K. Swapna</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A Series of Alkali-Earth Boro Tellurite (AEBT) glasses doped with different concentrations of Dy³⁺ ions have been prepared by using melt quenching technique and characterized through spectroscopic techniques such as optical absorption, excitation, emission and photoluminescence decay to understand their utility in optoelectronic devices such as lasers and white light emitting diodes (w-LEDs). Raman spectrum recorded for an undoped glass is used to measure the phonon energy of the host glass and various functional groups present in the host glass (AEBT). The intensities of the electronic transitions and the ligand environment around the Dy³⁺ ions were studied by applying Judd-Ofelt (J-O) theory to the recorded absorption spectra of the glasses. The evaluated J-O parameters are subsequently used to measure various radiative parameters such as transition probability (AR), radiative branching ratio (βR) and radiative lifetimes (τR) for the prominent fluorescent levels of Dy³⁺ ions in the as-prepared glasses. The luminescence spectra recorded at 387 nm excitation show three emission transitions (⁴F9/2→⁶H15/2 (blue), ⁴F9/2→⁶H13/2 (yellow) and ⁴F9/2 → ⁶H11/2 (red)) of which the yellow transition observed at 575 nm is found to be highly intense. The experimental branching ratio (βexp) and stimulated emission crosssection (σse) were measured from luminescence spectra. The experimental lifetimes (τexp) measured from the decay spectral profiles are combined with radiative lifetimes to measure quantum efficiencies of the as-prepared glasses. The yellow to blue intensity ratios and chromaticity color coordinates are found to vary with Dy³⁺ ion concentrations. The aforementioned results reveal that these glasses are aptly suitable for w-LEDs and laser devices. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=glasses" title="glasses">glasses</a>, <a href="https://publications.waset.org/abstracts/search?q=J-O%20parameters" title=" J-O parameters"> J-O parameters</a>, <a href="https://publications.waset.org/abstracts/search?q=photoluminescence" title=" photoluminescence"> photoluminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=I-H%20model" title=" I-H model"> I-H model</a> </p> <a href="https://publications.waset.org/abstracts/88085/spectroscopic-studies-of-dy3-ions-in-alkaline-earth-boro-tellurite-glasses-for-optoelectronic-devices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88085.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">158</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">387</span> Dy³+/Eu³+ Co-Activated Gadolinium Aluminate Borate Phosphor: Enhanced Luminescence and Color Output Tuning</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Osama%20Madkhali">Osama Madkhali</a> </p> <p class="card-text"><strong>Abstract:</strong></p> GdAl₃(BO₃)₄ phosphors, incorporating Dy³+ and Dy³+/Eu³+ activators, were successfully synthesized via the gel combustion method. Powder X-ray diffraction (XRD) was utilized to ascertain phase purity and assess the impact of dopant concentration on the crystallographic structure. Photoluminescence (PL) measurements revealed that luminescence properties' intensity and lifetime varied with Dy³+ and Eu³+ ion concentrations. The relationship between luminescence intensity and doping concentration was explored in the context of the energy transfer process between Eu³+ and Dy³+ ions. An increase in Eu³+ co-doping concentrations resulted in a decrease in luminescence lifetime. Energy transfer efficiency was significantly enhanced from 26% to 84% with Eu³+ co-doping, as evidenced by decay curve analysis. These findings position GdAl₃(BO₃)4: Dy³+, Eu³+ phosphors as promising candidates for LED applications in solid-state lighting and displays. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=GdAl%E2%82%83%28BO%E2%82%83%29%E2%82%84%20phosphors" title="GdAl₃(BO₃)₄ phosphors">GdAl₃(BO₃)₄ phosphors</a>, <a href="https://publications.waset.org/abstracts/search?q=Dy%C2%B3%2B%2FEu%C2%B3%2B%20co-doping" title=" Dy³+/Eu³+ co-doping"> Dy³+/Eu³+ co-doping</a>, <a href="https://publications.waset.org/abstracts/search?q=photoluminescence%20%28PL%29%20measurements" title=" photoluminescence (PL) measurements"> photoluminescence (PL) measurements</a>, <a href="https://publications.waset.org/abstracts/search?q=luminescence%20properties" title=" luminescence properties"> luminescence properties</a>, <a href="https://publications.waset.org/abstracts/search?q=LED%20applications" title=" LED applications"> LED applications</a>, <a href="https://publications.waset.org/abstracts/search?q=solid-state%20lighting" title=" solid-state lighting"> solid-state lighting</a> </p> <a href="https://publications.waset.org/abstracts/181481/dy3eu3-co-activated-gadolinium-aluminate-borate-phosphor-enhanced-luminescence-and-color-output-tuning" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/181481.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">56</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">386</span> Silver Nanoparticles-Enhanced Luminescence Spectra of Silicon Nanocrystals</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khamael%20M.%20Abualnaja">Khamael M. Abualnaja</a>, <a href="https://publications.waset.org/abstracts/search?q=Lidija%20%C5%A0iller"> Lidija Šiller</a>, <a href="https://publications.waset.org/abstracts/search?q=Benjamin%20R.%20Horrocks"> Benjamin R. Horrocks </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Metal-enhanced luminescence of silicon nano crystals (SiNCs) was determined using two different particle sizes of silver nano particles (AgNPs). SiNCs have been characterized by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy (FTIR) and X-ray photo electron spectroscopy (XPS). It is found that the SiNCs are crystalline with an average diameter of 65 nm and FCC lattice. AgNPs were synthesized using photochemical reduction of AgNO3 with sodium dodecyl sulphate (SDS). The enhanced luminescence of SiNCs by AgNPs was evaluated by confocal Raman microspectroscopy. Enhancement up to ×9 and ×3 times were observed for SiNCs that mixed with AgNPs which have an average particle size of 100 nm and 30 nm, respectively. Silver NPs-enhanced luminescence of SiNCs occurs as a result of the coupling between the excitation laser light and the plasmon bands of AgNPs; thus this intense field at AgNPs surface couples strongly to SiNCs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title="silver nanoparticles">silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20enhanced%20raman%20spectroscopy%20%28SERS%29" title=" surface enhanced raman spectroscopy (SERS)"> surface enhanced raman spectroscopy (SERS)</a>, <a href="https://publications.waset.org/abstracts/search?q=silicon%20nanocrystals" title=" silicon nanocrystals"> silicon nanocrystals</a>, <a href="https://publications.waset.org/abstracts/search?q=luminescence" title=" luminescence "> luminescence </a> </p> <a href="https://publications.waset.org/abstracts/17402/silver-nanoparticles-enhanced-luminescence-spectra-of-silicon-nanocrystals" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17402.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">421</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">385</span> Two-Photon Fluorescence in N-Doped Graphene Quantum Dots</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chi%20Man%20Luk">Chi Man Luk</a>, <a href="https://publications.waset.org/abstracts/search?q=Ming%20Kiu%20Tsang"> Ming Kiu Tsang</a>, <a href="https://publications.waset.org/abstracts/search?q=Chi%20Fan%20Chan"> Chi Fan Chan</a>, <a href="https://publications.waset.org/abstracts/search?q=Shu%20Ping%20Lau">Shu Ping Lau</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nitrogen-doped graphene quantum dots (N-GQDs) were fabricated by microwave-assisted hydrothermal technique. The optical properties of the N-GQDs were studied. The luminescence of the N-GQDs can be tuned by varying the excitation wavelength. Furthermore, two-photon luminescence of the N-GQDs excited by near-infrared laser can be obtained. It is shown that N-doping play a key role on two-photon luminescence. The N-GQDs are expected to find application in biological applications including bioimaging and sensing. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=graphene%20quantum%20dots" title="graphene quantum dots">graphene quantum dots</a>, <a href="https://publications.waset.org/abstracts/search?q=nitrogen%20doping" title=" nitrogen doping"> nitrogen doping</a>, <a href="https://publications.waset.org/abstracts/search?q=photoluminescence" title=" photoluminescence"> photoluminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=two-photon%20fluorescence" title=" two-photon fluorescence"> two-photon fluorescence</a> </p> <a href="https://publications.waset.org/abstracts/16856/two-photon-fluorescence-in-n-doped-graphene-quantum-dots" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16856.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">633</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">384</span> Enhancing the Luminescence of Alkyl-Capped Silicon Quantum Dots by Using Metal Nanoparticles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khamael%20M.%20Abualnaja">Khamael M. Abualnaja</a>, <a href="https://publications.waset.org/abstracts/search?q=Lidija%20%C5%A0iller"> Lidija Šiller</a>, <a href="https://publications.waset.org/abstracts/search?q=Ben%20R.%20Horrocks"> Ben R. Horrocks</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Metal enhanced luminescence of alkyl-capped silicon quantum dots (C11-SiQDs) was obtained by mixing C11-SiQDs with silver nanoparticles (AgNPs). C11-SiQDs have been synthesized by galvanostatic method of p-Si (100) wafers followed by a thermal hydrosilation reaction of 1-undecene in refluxing toluene in order to extract alkyl-capped silicon quantum dots from porous Si. The chemical characterization of C11-SiQDs was carried out using X-ray photoemission spectroscopy (XPS). C11-SiQDs have a crystalline structure with a diameter of 5 nm. Silver nanoparticles (AgNPs) of two different sizes were synthesized also using photochemical reduction of silver nitrate with sodium dodecyl sulphate. The synthesized Ag nanoparticles have a polycrystalline structure with an average particle diameter of 100 nm and 30 nm, respectively. A significant enhancement up to 10 and 4 times in the luminescence intensities was observed for AgNPs100/C11-SiQDs and AgNPs30/C11-SiQDs mixtures, respectively using 488 nm as an excitation source. The enhancement in luminescence intensities occurs as a result of the coupling between the excitation laser light and the plasmon bands of Ag nanoparticles; thus this intense field at Ag nanoparticles surface couples strongly to C11-SiQDs. The results suggest that the larger Ag nanoparticles i.e.100 nm caused an optimum enhancement in the luminescence intensity of C11-SiQDs which reflect the strong interaction between the localized surface plasmon resonance of AgNPs and the electric field forming a strong polarization near C11-SiQDs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=silicon%20quantum%20dots" title="silicon quantum dots">silicon quantum dots</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles%20%28AgNPs%29" title=" silver nanoparticles (AgNPs)"> silver nanoparticles (AgNPs)</a>, <a href="https://publications.waset.org/abstracts/search?q=luminescence" title=" luminescence"> luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=plasmon" title=" plasmon"> plasmon</a> </p> <a href="https://publications.waset.org/abstracts/34663/enhancing-the-luminescence-of-alkyl-capped-silicon-quantum-dots-by-using-metal-nanoparticles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34663.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">378</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">383</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">382</span> Synthesis of Rare Earth Doped Nano-Phosphors through the Use of Isobutyl Nitrite and Urea Fuels: Study of Microstructure and Luminescence Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seyed%20Mahdi%20Rafiaei">Seyed Mahdi Rafiaei</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this investigation, red emitting Eu³⁺ doped YVO₄ nano-phosphors have been synthesized via the facile combustion method using isobutyl nitrite and urea fuels, individually. Field-emission scanning electron microscope (FE-SEM) images, high resolution transmission electron microscope (TEM) images and X-ray diffraction (XRD) spectra reveal that the mentioned fuels can be used successfully to synthesis YVO₄: Eu³⁺ nano-particles. Interestingly, the fuels have a large effect on the size and morphology of nano-phosphors as well as luminescence properties. Noteworthy the use of isobutyl nitrite provides an average particle size of 65 nm, while the employment of urea, results in the formation of larger particles and also provides higher photoluminescence emission intensity. The improved luminescence performance is attributed to the condition of chemical reaction via the combustion synthesis and the size of synthesized phosphors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phosphors" title="phosphors">phosphors</a>, <a href="https://publications.waset.org/abstracts/search?q=combustion" title=" combustion"> combustion</a>, <a href="https://publications.waset.org/abstracts/search?q=fuels" title=" fuels"> fuels</a>, <a href="https://publications.waset.org/abstracts/search?q=luminescence" title=" luminescence"> luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=nanostructure" title=" nanostructure"> nanostructure</a> </p> <a href="https://publications.waset.org/abstracts/93632/synthesis-of-rare-earth-doped-nano-phosphors-through-the-use-of-isobutyl-nitrite-and-urea-fuels-study-of-microstructure-and-luminescence-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93632.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">138</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">381</span> Carbothermic Reduction of Phosphoric Acid Extracted from Dephosphorization Slags to Produce Yellow Phosphorus </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ryoko%20Yoshida">Ryoko Yoshida</a>, <a href="https://publications.waset.org/abstracts/search?q=Jyunpei%20Yoshida"> Jyunpei Yoshida</a>, <a href="https://publications.waset.org/abstracts/search?q=Hua%20Fang%20Yu"> Hua Fang Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yasushi%20Sasaki"> Yasushi Sasaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Tetsuya%20Nagasaka"> Tetsuya Nagasaka</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Phosphorous is an important element for agriculture and industry and is a non-renewable resource. Especially, yellow phosphorus is an essential material in advanced industrial technology, but phosphorus resources were not produced in Japan at all, and all depend on imports. It has been suggested, however, that the remaining accessible reserves of phosphate ore will be depleted within 50 years. Therefore, alternative resources for phosphate ore must be found. In this research, we have developed a process that enables the production of high-purity yellow phosphorus from domestic unused phosphorus resources such as steelmaking slags. The process consists of two parts: (1) the production of crude phosphoric acid from wastes such as steelmaking slag; (2) producing high-purity yellow phosphorus by low-temperature carbothermic reduction of phosphoric acid (H<sub>3</sub>PO<sub>4</sub>). The details of the carbothermic reduction of phosphoric acid are presented in this paper. Yellow phosphorus is commercially produced by carbothermic reduction of phosphate ore in an electric arc furnace at more than 1673K. In the newly developed system, gaseous P<sub>4</sub>O<sub>10</sub> evaporated from H<sub>3</sub>PO<sub>4</sub> is successfully reduced to yellow phosphorus by using carbon packed bed at less than 1273K. To meet the depletion of phosphate ore, the proposed process in this study to produce yellow phosphorus by carbothermic reduction of H<sub>3</sub>PO<sub>4 </sub>that are extracted from dephosphorization slags will be one of the effective and economical solutions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbothermic%20reduction" title="carbothermic reduction">carbothermic reduction</a>, <a href="https://publications.waset.org/abstracts/search?q=phosphoric%20acid" title=" phosphoric acid"> phosphoric acid</a>, <a href="https://publications.waset.org/abstracts/search?q=dephosphorization%20slags" title=" dephosphorization slags"> dephosphorization slags</a>, <a href="https://publications.waset.org/abstracts/search?q=yellow%20phosphorus" title=" yellow phosphorus"> yellow phosphorus</a> </p> <a href="https://publications.waset.org/abstracts/111611/carbothermic-reduction-of-phosphoric-acid-extracted-from-dephosphorization-slags-to-produce-yellow-phosphorus" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/111611.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">121</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">380</span> Lanthanide-Mediated Aggregation of Glutathione-Capped Gold Nanoclusters Exhibiting Strong Luminescence and Fluorescence Turn-on for Sensing Alkaline Phosphatase</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jyun-Guo%20You">Jyun-Guo You</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei-Lung%20Tseng"> Wei-Lung Tseng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Herein, this study represents a synthetic route for producing highly luminescent AuNCs based on the integration of two concepts, including thiol-induced luminescence enhancement of ligand-insufficient GSH-AuNCs and Ce3+-induced aggregation of GSH-AuNCs. The synthesis of GSH-AuNCs was conducted by modifying the previously reported procedure. To produce more Au(I)-GSH complexes on the surface of ligand-insufficient GSH-AuNCs, the extra GSH is added to attach onto the AuNC surface. The formed ligand-sufficient GSH-AuNCs (LS-GSH-AuNCs) emit relatively strong luminescence. The luminescence of LS-GSH-AuNCs is further enhanced by the coordination of two carboxylic groups (pKa1 = 2 and pKa2 = 3.5) of GSH and lanthanide ions, which induce the self-assembly of LS-GSH-AuNCs. As a result, the quantum yield of the self-assembled LS-GSH-AuNCs (SA-AuNCs) was improved to be 13%. Interestingly, the SA-AuNCs were dissembled into LS-GSH-AuNCs in the presence of adenosine triphosphate (ATP) because of the formation of the ATP- lanthanide ion complexes. Our assay was employed to detect alkaline phosphatase (ALP) activity over the range of 0.1−10 U/mL with a limit of detection (LOD) of 0.03 U/mL. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=self-assembly" title="self-assembly">self-assembly</a>, <a href="https://publications.waset.org/abstracts/search?q=lanthanide%20ion" title=" lanthanide ion"> lanthanide ion</a>, <a href="https://publications.waset.org/abstracts/search?q=adenosine%20triphosphate" title=" adenosine triphosphate"> adenosine triphosphate</a>, <a href="https://publications.waset.org/abstracts/search?q=alkaline%20phosphatase" title=" alkaline phosphatase"> alkaline phosphatase</a> </p> <a href="https://publications.waset.org/abstracts/83573/lanthanide-mediated-aggregation-of-glutathione-capped-gold-nanoclusters-exhibiting-strong-luminescence-and-fluorescence-turn-on-for-sensing-alkaline-phosphatase" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/83573.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">170</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">379</span> Low-Temperature Luminescence Spectroscopy of Violet Sr-Al-O:Eu2+ Phosphor Particles </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Keiji%20Komatsu">Keiji Komatsu</a>, <a href="https://publications.waset.org/abstracts/search?q=Hayato%20Maruyama"> Hayato Maruyama</a>, <a href="https://publications.waset.org/abstracts/search?q=Ariyuki%20Kato"> Ariyuki Kato</a>, <a href="https://publications.waset.org/abstracts/search?q=Atsushi%20Nakamura"> Atsushi Nakamura</a>, <a href="https://publications.waset.org/abstracts/search?q=Shigeo%20Ohshio"> Shigeo Ohshio</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroki%20Akasaka"> Hiroki Akasaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Hidetoshi%20Saitoh"> Hidetoshi Saitoh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Violet Sr–Al–O:Eu2+ phosphor particles were synthesized from a metal–ethylenediaminetetraacetic acid (EDTA) solution of Sr, Al, Eu, and particulate alumina via spray drying and sintering in a reducing atmosphere. The crystal structures and emission properties at 85–300 K were investigated. The composition of the violet Sr–Al–O:Eu2+ phosphor particles was determined from various Sr–Al–O:Eu2+ phosphors by their emission properties’ dependence on temperature. The highly crystalline SrAl12O19:Eu2+ emission phases were confirmed by their crystallite sizes and the activation energies for the 4f5d–8S7/2 transition of the Eu2+ ion. These results showed that the material identification for the violet Sr–Al–O:Eu2+ phosphor was accomplished by the low-temperature luminescence measurements. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=low%20temperature%20luminescence%20spectroscopy" title="low temperature luminescence spectroscopy">low temperature luminescence spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=material%20identification" title=" material identification"> material identification</a>, <a href="https://publications.waset.org/abstracts/search?q=strontium%20aluminates%20phosphor" title=" strontium aluminates phosphor"> strontium aluminates phosphor</a>, <a href="https://publications.waset.org/abstracts/search?q=emission%20properties" title=" emission properties "> emission properties </a> </p> <a href="https://publications.waset.org/abstracts/10329/low-temperature-luminescence-spectroscopy-of-violet-sr-al-oeu2-phosphor-particles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10329.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">448</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">378</span> A Luminescence Study of Bi³⁺ Codoping on Eu³⁺ Doped YPO₄</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Yaiphaba">N. Yaiphaba</a>, <a href="https://publications.waset.org/abstracts/search?q=Elizabeth%20C.%20H."> Elizabeth C. H.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> YPO₄ nanoparticles codoped with Eu³⁺(5 at.%) and Bi³⁺(0, 1, 3, 5, 7, 10, 12, 15, 20 at.%) have been prepared in poly acrylic acid (PAA)-H₂O medium by hydrothermal synthesis by maintaining a temperature of 180oC. The crystalline structure of as-prepared and 500oC annealed samples transforms from tetragonal (JCPDS-11-0254) to hexagonal phase (JCPDS-42-0082) with increasing concentration of Bi³⁺ ions. However, 900oC annealed samples exhibit tetragonal structure. The crystallite size of the particles varies from 19-50 nm. The luminescence intensity increases at lower concentration of Bi³⁺ ions and then decreases with increasing Bi3+ ion concentrations. The luminescence intensity further increases on annealing at 500oC and 900oC. Further, 900oC annealed samples show sharp increase in luminescence intensity. Moreover, the samples follow bi-exponential decay indicating energy transfer from donor to the activator or non-uniform distribution of ions in the samples. The samples on excitation at 318 nm exhibit near white emission while at 394 nm excitation show emission in the red region. The as-prepared samples are redispersible and have potential applications in display devices, metal ion sensing, biological labelling, etc. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=charge%20transfer" title="charge transfer">charge transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=sensitizer" title=" sensitizer"> sensitizer</a>, <a href="https://publications.waset.org/abstracts/search?q=activator" title=" activator"> activator</a>, <a href="https://publications.waset.org/abstracts/search?q=annealing" title=" annealing"> annealing</a> </p> <a href="https://publications.waset.org/abstracts/159353/a-luminescence-study-of-bi3-codoping-on-eu3-doped-ypo4" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/159353.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">67</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">377</span> Synthesis of Beetosan's Hydrogels with Yellow Tea</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jolanta%20Jaskowska">Jolanta Jaskowska</a>, <a href="https://publications.waset.org/abstracts/search?q=Anna%20Drabczyk"> Anna Drabczyk</a>, <a href="https://publications.waset.org/abstracts/search?q=Sonia%20Kudlacik"> Sonia Kudlacik</a>, <a href="https://publications.waset.org/abstracts/search?q=Agnieszka%20Sobczak-Kupiec"> Agnieszka Sobczak-Kupiec</a>, <a href="https://publications.waset.org/abstracts/search?q=Bozena%20Tyliszczak"> Bozena Tyliszczak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the study was to select the best conditions for the synthesis of Beetosan's hydrogels with yellow tea. The study determined recipe hydrogel matrix by selecting the appropriate ratio of substrates and to investigate the effect of yellow tea, on the structure and properties of the hydrogel materials. The scope of the research included both to obtain of raw materials required for the synthesis of hydrogel materials, as well as an assessment of their properties. In the first stage of research Beetosan (chitosan derived from bees), and extract the yellow tea China Kekecha was obtained. The second stage was synthesis hydrogels modified by yellow tea. The synthesis of polymeric matrix was preparation under UV radiation. Obtained hydrogel materials were investigated extensively using incubation investigations, absorption capacity, and spectroscopic (FT-IR) and X-ray diffraction (XRD) methods. Moreover, there was also performed the surface wettability test and a photomicrograph of the structure using scanning electron microscope. Analysis of the obtained results confirms that presence of yellow tea does not significantly affect the behavior of the hydrogels in the incubation fluids. The results show that hydrogel materials exhibit compatibility with the incubatory solutions and they also retain the stability in the tested liquids. Hydrogels obtained in this method might be applied in the cosmetics industry and in the field of medicine. This is possible due to the many interesting properties of tea and biocompatibility and non-toxicity hydrogel materials. The authors would like to thank the The National Centre for Research and Development (Grant no: LIDER/033/697/L-5/13/NCBR/2014) for providing financial support to this project. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Beetosan" title="Beetosan">Beetosan</a>, <a href="https://publications.waset.org/abstracts/search?q=hygrogels" title=" hygrogels"> hygrogels</a>, <a href="https://publications.waset.org/abstracts/search?q=materials" title=" materials"> materials</a>, <a href="https://publications.waset.org/abstracts/search?q=yellow%20tea" title=" yellow tea"> yellow tea</a> </p> <a href="https://publications.waset.org/abstracts/68058/synthesis-of-beetosans-hydrogels-with-yellow-tea" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68058.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">275</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">376</span> Scientific Investigation for an Ancient Egyptian Polychrome Wooden Stele </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Abdrabou">Ahmed Abdrabou</a>, <a href="https://publications.waset.org/abstracts/search?q=Medhat%20Abdalla"> Medhat Abdalla</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The studied stele dates back to Third Intermediate Period (1075-664) B.C in an ancient Egypt. It is made of wood and covered with painted gesso layers. This study aims to use a combination of multi spectral imaging {visible, infrared (IR), Visible-induced infrared luminescence (VIL), Visible-induced ultraviolet luminescence (UVL) and ultraviolet reflected (UVR)}, along with portable x-ray fluorescence in order to map and identify the pigments as well as to provide a deeper understanding of the painting techniques. Moreover; the authors were significantly interested in the identification of wood species. Multispectral imaging acquired in 3 spectral bands, ultraviolet (360-400 nm), visible (400-780 nm) and infrared (780-1100 nm) using (UV Ultraviolet-induced luminescence (UVL), UV Reflected (UVR), Visible (VIS), Visible-induced infrared luminescence (VIL) and Infrared photography. False color images are made by digitally editing the VIS with IR or UV images using Adobe Photoshop. Optical Microscopy (OM), potable X-ray fluorescence spectroscopy (p-XRF) and Fourier Transform Infrared Spectroscopy (FTIR) were used in this study. Mapping and imaging techniques provided useful information about the spatial distribution of pigments, in particular visible-induced luminescence (VIL) which allowed the spatial distribution of Egyptian blue pigment to be mapped and every region containing Egyptian blue, even down to single crystals in some instances, is clearly visible as a bright white area; however complete characterization of the pigments requires the use of p. XRF spectroscopy. Based on the elemental analysis found by P.XRF, we conclude that the artists used mixtures of the basic mineral pigments to achieve a wider palette of hues. Identification of wood species Microscopic identification indicated that the wood used was Sycamore Fig (Ficus sycomorus L.) which is recorded as being native to Egypt and was used to make wooden artifacts since at least the Fifth Dynasty. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=polychrome%20wooden%20stele" title="polychrome wooden stele">polychrome wooden stele</a>, <a href="https://publications.waset.org/abstracts/search?q=multispectral%20imaging" title=" multispectral imaging"> multispectral imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=IR%20luminescence" title=" IR luminescence"> IR luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=Wood%20identification" title=" Wood identification"> Wood identification</a>, <a href="https://publications.waset.org/abstracts/search?q=Sycamore%20Fig" title=" Sycamore Fig"> Sycamore Fig</a>, <a href="https://publications.waset.org/abstracts/search?q=p-XRF" title=" p-XRF "> p-XRF </a> </p> <a href="https://publications.waset.org/abstracts/58954/scientific-investigation-for-an-ancient-egyptian-polychrome-wooden-stele" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58954.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">264</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">375</span> A Theoretical Overview of Thermoluminescence</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sadhana%20Agrawal">Sadhana Agrawal</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarkeshwari%20Verma"> Tarkeshwari Verma</a>, <a href="https://publications.waset.org/abstracts/search?q=Shmbhavi%20Katyayan"> Shmbhavi Katyayan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The magnificently accentuating phenomenon of luminescence has gathered a lot of attentions from last few decades. Probably defined as the one involving emission of light from certain kinds of substances on absorbing various energies in the form of external stimulus, the phenomenon claims a versatile pertinence. First observed and reported in an extract of Ligrium Nephriticum by Monards, the phenomenon involves turning of crystal clear water into colorful fluid when comes in contact with the special wood. In words of Sir G.G. Stokes, the phenomenon actually involves three different techniques – absorption, excitation and emission. With variance in external stimulus, the corresponding luminescence phenomenon is obtained. Here, this paper gives a concise discussion of thermoluminescence which is one of the types of luminescence obtained when the external stimulus is given in form of heat energy. A deep insight of thermoluminescence put forward a qualitative analysis of various parameters such as glow curves peaks, trap depth, frequency factors and order of kinetics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=frequency%20factor" title="frequency factor">frequency factor</a>, <a href="https://publications.waset.org/abstracts/search?q=glow%20curve%20peaks" title=" glow curve peaks"> glow curve peaks</a>, <a href="https://publications.waset.org/abstracts/search?q=thermoluminescence" title=" thermoluminescence"> thermoluminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=trap%20depth" title=" trap depth"> trap depth</a> </p> <a href="https://publications.waset.org/abstracts/47928/a-theoretical-overview-of-thermoluminescence" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47928.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">399</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">374</span> Application of Laser Spectroscopy for Detection of Actinides and Lanthanides in Solutions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Igor%20Izosimov">Igor Izosimov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work is devoted to applications of the Time-resolved laser-induced luminescence (TRLIF) spectroscopy and time-resolved laser-induced chemiluminescence spectroscopy for detection of lanthanides and actinides. Results of the experiments on Eu, Sm, U, and Pu detection in solutions are presented. The limit of uranyl detection (LOD) in urine in our TRLIF experiments was up to 5 pg/ml. In blood plasma LOD was 0.1 ng/ml and after mineralization was up to 8pg/ml – 10pg/ml. In pure solution, the limit of detection of europium was 0.005ng/ml and samarium, 0.07ng/ml. After addition urine, the limit of detection of europium was 0.015 ng/ml and samarium, 0.2 ng/ml. Pu, Np, and some U compounds do not produce direct luminescence in solutions, but when excited by laser radiation, they can induce chemiluminescence of some chemiluminogen (luminol in our experiments). It is shown that multi-photon scheme of chemiluminescence excitation makes chemiluminescence not only a highly sensitive but also a highly selective tool for the detection of lanthanides/actinides in solutions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=actinides%2Flanthanides%20detection" title="actinides/lanthanides detection">actinides/lanthanides detection</a>, <a href="https://publications.waset.org/abstracts/search?q=laser%20spectroscopy%20with%20time%20resolution" title=" laser spectroscopy with time resolution"> laser spectroscopy with time resolution</a>, <a href="https://publications.waset.org/abstracts/search?q=luminescence%2Fchemiluminescence" title=" luminescence/chemiluminescence"> luminescence/chemiluminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=solutions" title=" solutions"> solutions</a> </p> <a href="https://publications.waset.org/abstracts/61605/application-of-laser-spectroscopy-for-detection-of-actinides-and-lanthanides-in-solutions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61605.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">333</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">373</span> Synthesis and Surface Engineering of Lanthanide Nanoparticles for NIR Luminescence Imaging and Photodynamic Therapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Syue-Liang%20Lin">Syue-Liang Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Allen%20Chang"> C. Allen Chang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Luminescence imaging is an important technique used in biomedical research and clinical diagnostic applications in recent years. Concurrently, the development of NIR luminescence probes / imaging contrast agents has helped the understanding of the structural and functional properties of cells and animals. Photodynamic therapy (PDT) is used clinically to treat a wide range of medical conditions, but the therapeutic efficacy of general PDT for deeper tumor was limited by the penetration of excitation source. The tumor targeting biomedical nanomaterials UCNP@PS (upconversion nanoparticle conjugated with photosensitizer) for photodynamic therapy and near-infrared imaging of cancer will be developed in our study. Synthesis and characterization of biomedical nanomaterials were completed in this studies. The spectrum of UCNP was characterized by photoluminescence spectroscopy and the morphology was characterized by Transmission Electron Microscope (TEM). TEM and XRD analyses indicated that these nanoparticles are about 20~50 nm with hexagonal phase. NaYF₄:Ln³⁺ (Ln= Yb, Nd, Er) upconversion nanoparticles (UCNPs) with core / shell structure, synthesized by thermal decomposition method in 300°C, have the ability to emit visible light (upconversion: 540 nm, 660 nm) and near-infrared with longer wavelength (downconversion: NIR: 980 nm, 1525 nm) by absorbing 800 nm NIR laser. The information obtained from these studies would be very useful for applications of these nanomaterials for bio-luminescence imaging and photodynamic therapy of deep tumor tissue in the future. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Near%20Infrared%20%28NIR%29" title="Near Infrared (NIR)">Near Infrared (NIR)</a>, <a href="https://publications.waset.org/abstracts/search?q=lanthanide" title=" lanthanide"> lanthanide</a>, <a href="https://publications.waset.org/abstracts/search?q=core-shell%20structure" title=" core-shell structure"> core-shell structure</a>, <a href="https://publications.waset.org/abstracts/search?q=upconversion" title=" upconversion"> upconversion</a>, <a href="https://publications.waset.org/abstracts/search?q=theranostics" title=" theranostics"> theranostics</a> </p> <a href="https://publications.waset.org/abstracts/71701/synthesis-and-surface-engineering-of-lanthanide-nanoparticles-for-nir-luminescence-imaging-and-photodynamic-therapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71701.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">235</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">372</span> Solid-State Luminescence of Fluorenone Grafted onto Cellulose Aldehyde Backbone Using Different Organic Amine Spacers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Isam%20M.%20Arafa">Isam M. Arafa</a>, <a href="https://publications.waset.org/abstracts/search?q=Mazin%20Y.%20Shatnawi"> Mazin Y. Shatnawi</a>, <a href="https://publications.waset.org/abstracts/search?q=Yaser%20A.%20Yousef"> Yaser A. Yousef</a>, <a href="https://publications.waset.org/abstracts/search?q=Batool%20Zaid%20Al-Momani"> Batool Zaid Al-Momani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present work describes the preparation, characterization, and luminescence of a series of fluorenone (FL) based luminophores grafted onto modified cellulose microfibers. The FL is condensed onto cellulose aldehyde using three diamine spacers (H₂N-NH₂, H₂N(CH₂)₂NH₂ and H₂N(CH₂)₃NH₂) to afford Cell=Spacer=FL. The obtained products were characterized by spectroscopic (FT-IR, UV–Vis), thermal gravimetric analysis (TGA), and microscopic (Optical, SEM) techniques. The UV-Vis spectra of the FL=N(CH₂)ₓNH₂ (x = 0, 2, 3) moieties show that they are transparent in the 375- 800 nm region while they exhibit intense absorption band below 350 nm attributed to n-π* and π-π* transitions. The solid-state photoluminescence (PLs-s) of the cold-pressed pellets of the FL=N(CH₂)ₓNH₂ and Cell=Spacer=FL placed in a quartz cuvette show strong emission in the 500-550 nm region upon irradiation with Xe lamp light (λex = 320 nm). The PLs-s green emission of the grafted Cell=Spacer=FL was evaluated relative to that of the FL-based precursor. These grafted conjugated products have the potential to be used as analyte sensors for typical nitroaromatics/aromatic amines and be further extended to immunoassay studies for aromatic amino acids such as phenylalanine and histidine. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=luminescence" title="luminescence">luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=cellulose" title=" cellulose"> cellulose</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorenone" title=" fluorenone"> fluorenone</a>, <a href="https://publications.waset.org/abstracts/search?q=grafting" title=" grafting"> grafting</a>, <a href="https://publications.waset.org/abstracts/search?q=solid%20state" title=" solid state"> solid state</a> </p> <a href="https://publications.waset.org/abstracts/176946/solid-state-luminescence-of-fluorenone-grafted-onto-cellulose-aldehyde-backbone-using-different-organic-amine-spacers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/176946.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">72</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">371</span> The First Import of Yellow Fever Cases in China and Its Revealing Suggestions for the Control and Prevention of Imported Emerging Diseases</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chao%20Li">Chao Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Lei%20Zhou"> Lei Zhou</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruiqi%20Ren"> Ruiqi Ren</a>, <a href="https://publications.waset.org/abstracts/search?q=Dan%20Li"> Dan Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Yali%20Wang"> Yali Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Daxin%20Ni"> Daxin Ni</a>, <a href="https://publications.waset.org/abstracts/search?q=Zijian%20Feng"> Zijian Feng</a>, <a href="https://publications.waset.org/abstracts/search?q=Qun%20Li"> Qun Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: In 2016, yellow fever had been first ever discovered in China, soon after the yellow fever epidemic occurred in Angola. After the discovery, China had promptly made the national protocol of control and prevention and strengthened the surveillance on passenger and vector. In this study, a descriptive analysis was conducted to summarize China’s experiences of response towards this import epidemic, in the hope of providing experiences on prevention and control of yellow fever and other similar imported infectious diseases in the future. Methods: The imported cases were discovered and reported by General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) and several hospitals. Each clinically diagnosed yellow fever case was confirmed by real-time reverse transcriptase polymerase chain reaction (RT–PCR). The data of the imported yellow fever cases were collected by local Centers for Disease Control and Prevention (CDC) through field investigations soon after they received the reports. Results: A total of 11 imported cases from Angola were reported in China, during Angola’s yellow fever outbreak. Six cases were discovered by the AQSIQ, among which two with mild symptom were initiative declarations at the time of entry. Except for one death, the remaining 10 cases all had recovered after timely and proper treatment. All cases are Chinese, and lived in Luanda, the capital of Angola. 73% were retailers (8/11) from Fuqing city in Fujian province, and the other three were labors send by companies. 10 cases had experiences of medical treatment in Luanda after onset, among which 8 cases visited the same local Chinese medicine hospital (China Railway four Bureau Hospital). Among the 11 cases, only one case had an effective vaccination. The result of emergency surveillance for mosquito density showed that only 14 containers of water were found positive around places of three cases, and the Breteau Index is 15. Conclusions: Effective response was taken to control and prevent the outbreak of yellow fever in China after discovering the imported cases. However, though the similar origin of Chinese in Angola has provided an easy access for disease detection, information sharing, health education and vaccination on yellow fever; these conveniences were overlooked during previous disease prevention methods. Besides, only one case having effective vaccination revealed the inadequate capacity of immunization service in China. These findings will provide suggestions to improve China’s capacity to deal with not only yellow fever but also other similar imported diseases in China. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=yellow%20fever" title="yellow fever">yellow fever</a>, <a href="https://publications.waset.org/abstracts/search?q=first%20import" title=" first import"> first import</a>, <a href="https://publications.waset.org/abstracts/search?q=China" title=" China"> China</a>, <a href="https://publications.waset.org/abstracts/search?q=suggestion" title=" suggestion"> suggestion</a> </p> <a href="https://publications.waset.org/abstracts/85916/the-first-import-of-yellow-fever-cases-in-china-and-its-revealing-suggestions-for-the-control-and-prevention-of-imported-emerging-diseases" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85916.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">187</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">370</span> Control Effect of Flowering Chrysanthemum, the Trap Plant to the Western Flower Thrips, Frankliniella occidentalis (Thysanoptera: Thripidae) in Greenhouse</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=YongSeok%20Choi">YongSeok Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=HwaYoung%20Seo"> HwaYoung Seo</a>, <a href="https://publications.waset.org/abstracts/search?q=InSu%20Whang"> InSu Whang</a>, <a href="https://publications.waset.org/abstracts/search?q=GeogKee%20Park"> GeogKee Park</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Frankliniella. occidentalis is major pest in chrysanthemum in worldwide. The density of F. occidentalis increased continuously in spite of the periodical chemical control after planting in this study. F. occidentalis began to increase mid-May. The numbers of F. occidentalis collected on a tray with wet paper by heating the flowers of pink, white, and yellow Chrysanthemum standard mums were 18.4, 56.6, and 52.6 in the flowering season. Also, the numbers were 15.2, 45.8, and 41.6 in bud season, but in the case of the leaves, the numbers were 2, 8.8 and 3.4. In the Y-tube olfactometer test, the frequency of F. occidentalis’ visits to one side arm of the Y-tube olfactometer was higher in the odor cue of the white flower than of the yellow, red, and violet flowers, but the frequency was higher in the odor cue of the violet and red flowers than of the yellow without white. In the case of the four-choice olfactometer test, in the same visual cues as the odor cues of the pot mum flowers, the frequency of F. occidentalis was higher in the yellow flower than in the other flowers (white, red, and violet) in all the observation times (10, 15, and 20 minutes). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Frankliniella%20occidentalis" title="Frankliniella occidentalis">Frankliniella occidentalis</a>, <a href="https://publications.waset.org/abstracts/search?q=Chrysanthemum" title=" Chrysanthemum"> Chrysanthemum</a>, <a href="https://publications.waset.org/abstracts/search?q=trap%20plant" title=" trap plant"> trap plant</a>, <a href="https://publications.waset.org/abstracts/search?q=control%20effect" title=" control effect"> control effect</a> </p> <a href="https://publications.waset.org/abstracts/85755/control-effect-of-flowering-chrysanthemum-the-trap-plant-to-the-western-flower-thrips-frankliniella-occidentalis-thysanoptera-thripidae-in-greenhouse" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85755.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">188</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">369</span> Breath Ethanol Imaging System Using Real Time Biochemical Luminescence for Evaluation of Alcohol Metabolic Capacity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xin%20Wang">Xin Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Munkbayar%20Munkhjargal"> Munkbayar Munkhjargal</a>, <a href="https://publications.waset.org/abstracts/search?q=Kumiko%20Miyajima"> Kumiko Miyajima</a>, <a href="https://publications.waset.org/abstracts/search?q=Takahiro%20Arakawa"> Takahiro Arakawa</a>, <a href="https://publications.waset.org/abstracts/search?q=Kohji%20Mitsubayashi"> Kohji Mitsubayashi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The measurement of gaseous ethanol plays an important role of evaluation of alcohol metabolic capacity in clinical and forensic analysis. A 2-dimensional visualization system for gaseous ethanol was constructed and tested in visualization of breath and transdermal alcohol. We demonstrated breath ethanol measurement using developed high-sensitive visualization system. The concentration of breath ethanol calculated with the imaging signal was significantly different between the volunteer subjects of ALDH2 (+) and (-). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=breath%20ethanol" title="breath ethanol">breath ethanol</a>, <a href="https://publications.waset.org/abstracts/search?q=ethnaol%20imaging" title=" ethnaol imaging"> ethnaol imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=biochemical%20luminescence" title=" biochemical luminescence"> biochemical luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=alcohol%20metabolism" title=" alcohol metabolism"> alcohol metabolism</a> </p> <a href="https://publications.waset.org/abstracts/2708/breath-ethanol-imaging-system-using-real-time-biochemical-luminescence-for-evaluation-of-alcohol-metabolic-capacity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2708.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">351</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">368</span> Effect on Nutritional and Antioxidant Properties of Yellow Alkaline Noodles Substituted with Different Levels of Mangosteen (Garcinia Mangostana) Pericarp Powder</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mardiana%20Ahamad%20Zabidi">Mardiana Ahamad Zabidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nurain%20Abdul%20Karim"> Nurain Abdul Karim</a>, <a href="https://publications.waset.org/abstracts/search?q=Nur%20Shazrinna%20Sazali"> Nur Shazrinna Sazali</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mangosteen (Garcinia mangostana) pericarp is considered as agricultural waste and not fully utilized in food products. It is widely reported that mangosteen pericarp contains high antioxidant properties. The objective of this study is to develop novel yellow alkaline noodle (YAN) substituted with different levels of mangosteen pericarp powder (MPP). YAN formulation was substituted with different levels of MPP (0%, 5%, 10% and 15%). The effect on nutritional and antioxidant properties were evaluated. Higher substitution levels of MPP resulted in significant increase (p < 0.05) of ash, fibre, specific mineral elements, and antioxidant properties (total phenolic, total flavonoid, anthocyanin and DPPH) than control sample. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20properties" title="antioxidant properties">antioxidant properties</a>, <a href="https://publications.waset.org/abstracts/search?q=Mangosteen%20pericarp" title=" Mangosteen pericarp"> Mangosteen pericarp</a>, <a href="https://publications.waset.org/abstracts/search?q=proximate%20composition" title=" proximate composition"> proximate composition</a>, <a href="https://publications.waset.org/abstracts/search?q=yellow%20alkaline%20noodle" title=" yellow alkaline noodle"> yellow alkaline noodle</a> </p> <a href="https://publications.waset.org/abstracts/25244/effect-on-nutritional-and-antioxidant-properties-of-yellow-alkaline-noodles-substituted-with-different-levels-of-mangosteen-garcinia-mangostana-pericarp-powder" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25244.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">431</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">367</span> Ho-Doped Lithium Niobate Thin Films: Raman Spectroscopy, Structure and Luminescence</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Edvard%20Kokanyan">Edvard Kokanyan</a>, <a href="https://publications.waset.org/abstracts/search?q=Narine%20Babajanyan"> Narine Babajanyan</a>, <a href="https://publications.waset.org/abstracts/search?q=Ninel%20Kokanyan"> Ninel Kokanyan</a>, <a href="https://publications.waset.org/abstracts/search?q=Marco%20Bazzan"> Marco Bazzan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Lithium niobate (LN) crystals, renowned for their exceptional nonlinear optical, electro-optical, piezoelectric, and photorefractive properties, stand as foundational materials in diverse fields of study and application. While they have long been utilized in frequency converters of laser radiation, electro-optical modulators, and holographic information recording media, LN crystals doped with rare earth ions represent a compelling frontier for modern compact devices. These materials exhibit immense potential as key components in infrared lasers, optical sensors, self-cooling systems, and radiation balanced laser setups. In this study, we present the successful synthesis of Ho-doped lithium niobate (LN:Ho) thin films on sapphire substrates employing the Sol-Gel technique. The films exhibit a strong crystallographic orientation along the perpendicular direction to the substrate surface, with X-ray diffraction analysis confirming the predominant alignment of the film's "c" axis, notably evidenced by the intense (006) reflection peak. Further characterization through Raman spectroscopy, employing a confocal Raman microscope (LabRAM HR Evolution) with exciting wavelengths of 532 nm and 785 nm, unraveled intriguing insights. Under excitation with a 785 nm laser, Raman scattering obeyed selection rules, while employing a 532 nm laser unveiled additional forbidden lines reminiscent of behaviors observed in bulk LN:Ho crystals. These supplementary lines were attributed to luminescence induced by excitation at 532 nm. Leveraging data from anti-Stokes Raman lines facilitated the disentanglement of luminescence spectra from the investigated samples. Surface scanning affirmed the uniformity of both structure and luminescence across the thin films. Notably, despite the robust orientation of the "c" axis perpendicular to the substrate surface, Raman signals indicated a stochastic distribution of "a" and "b" axes, validating the mosaic structure of the films along the mentioned axis. This study offers valuable insights into the structural properties of Ho-doped lithium niobate thin films, with the observed luminescence behavior holding significant promise for potential applications in optoelectronic devices. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=lithium%20niobate" title="lithium niobate">lithium niobate</a>, <a href="https://publications.waset.org/abstracts/search?q=Sol-Gel" title=" Sol-Gel"> Sol-Gel</a>, <a href="https://publications.waset.org/abstracts/search?q=luminescence" title=" luminescence"> luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=Raman%20spectroscopy" title=" Raman spectroscopy"> Raman spectroscopy</a> </p> <a href="https://publications.waset.org/abstracts/183395/ho-doped-lithium-niobate-thin-films-raman-spectroscopy-structure-and-luminescence" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/183395.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">60</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">366</span> Characterization and Geographical Differentiation of Yellow Prickly Pear Produced in Different Mediterranean Countries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Artemis%20Louppis">Artemis Louppis</a>, <a href="https://publications.waset.org/abstracts/search?q=Michalis%20Constantinou"> Michalis Constantinou</a>, <a href="https://publications.waset.org/abstracts/search?q=Ioanna%20%20Kosma"> Ioanna Kosma</a>, <a href="https://publications.waset.org/abstracts/search?q=Federica%20Blando"> Federica Blando</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Kontominas"> Michael Kontominas</a>, <a href="https://publications.waset.org/abstracts/search?q=Anastasia%20Badeka"> Anastasia Badeka</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the present study was to differentiate yellow prickly pear according to geographical origin based on the combination of mineral content, physicochemical parameters, vitamins and antioxidants. A total of 240 yellow prickly pear samples from Cyprus, Spain, Italy and Greece were analyzed for pH, titratable acidity, electrical conductivity, protein, moisture, ash, fat, antioxidant activity, individual antioxidants, sugars and vitamins by UPLC-MS/MS as well as minerals by ICP-MS. Statistical treatment of the data included multivariate analysis of variance followed by linear discriminant analysis. Based on results, a correct classification of 66.7% was achieved using the cross validation by mineral content while 86.1% was achieved using the cross validation method by combination of all analytical parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=geographical%20differentiation" title="geographical differentiation">geographical differentiation</a>, <a href="https://publications.waset.org/abstracts/search?q=prickly%20pear" title=" prickly pear"> prickly pear</a>, <a href="https://publications.waset.org/abstracts/search?q=chemometrics" title=" chemometrics"> chemometrics</a>, <a href="https://publications.waset.org/abstracts/search?q=analytical%20techniques" title=" analytical techniques"> analytical techniques</a> </p> <a href="https://publications.waset.org/abstracts/137302/characterization-and-geographical-differentiation-of-yellow-prickly-pear-produced-in-different-mediterranean-countries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/137302.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">365</span> Luminescence and Local Environment: Identification of Thermal History</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Veronique%20Jubera">Veronique Jubera</a>, <a href="https://publications.waset.org/abstracts/search?q=Guillaume%20Salek"> Guillaume Salek</a>, <a href="https://publications.waset.org/abstracts/search?q=Manuel%20Gaudon"> Manuel Gaudon</a>, <a href="https://publications.waset.org/abstracts/search?q=Alain%20Garcia"> Alain Garcia</a>, <a href="https://publications.waset.org/abstracts/search?q=Alain%20Demourgues"> Alain Demourgues</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Luminescence of transition metal and rare earth elements cover ultraviolet to far infrared wavelengths. Applications of phosphors are numerous. One can cite lighting, sensing, laser, energy, medical or military applications. But regarding each domain, specific criteria are required and they can be achieved with a strong control of the chemical composition. Emission of doped materials can be tailored with modifications of the local environment of the cations. For instance, the increase of the crystal field effect shifts the divalent manganese radiative transitions from the green to the red color. External factor as heat-treatment can induce changes of the doping element location or modify the unit cell crystalline symmetry. By controlling carefully the synthesis route, it is possible to initiate emission shift and to establish the thermal history of a compound. We propose to demonstrate through the luminescence of divalent manganese and trivalent rare earth doped oxide, that it is possible to follow the thermal history of a material. After optimization of the synthesis route, structural and optical properties are discussed. Finally, thermal calibration graphs are successfully established on these doped compounds. This makes these materials promising probe for thermal sensing. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=emission" title="emission">emission</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20sensing" title=" thermal sensing"> thermal sensing</a>, <a href="https://publications.waset.org/abstracts/search?q=transition%20metal" title=" transition metal"> transition metal</a>, <a href="https://publications.waset.org/abstracts/search?q=rare%20eath%20element" title=" rare eath element"> rare eath element</a> </p> <a href="https://publications.waset.org/abstracts/60286/luminescence-and-local-environment-identification-of-thermal-history" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60286.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">385</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">364</span> Study of Nanocrystalline Scintillator for Alpha Particles Detection</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Azadeh%20Farzaneh">Azadeh Farzaneh</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Reza%20Abdi"> Mohammad Reza Abdi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Quaranta"> A. Quaranta</a>, <a href="https://publications.waset.org/abstracts/search?q=Matteo%20Dalla%20Palma"> Matteo Dalla Palma</a>, <a href="https://publications.waset.org/abstracts/search?q=Seyedshahram%20Mortazavi"> Seyedshahram Mortazavi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We report on the synthesis of cesium-iodide nanoparticles using sol-gel technique. The structural properties of CsI nanoparticles were characterized by X-ray diffraction and Scanning Electron Microscope (SEM) Also, optical properties were followed by optical absorption and UV–vis fluorescence. Intense photoluminescence is also observed, with some spectral tuning possible with ripening time getting a range of emission photon wavelength approximately from 366 to 350 nm. The size effect on CsI luminescence leads to an increase in scintillation light yield, a redshift of the emission bands of the on_center and off_center self_trapped excitons (STEs) and an increase in the contribution of the off_center STEs to the net intrinsic emission yield. The energy transfer from the matrix to CsI nanoparticles is a key characteristic for scintillation detectors. So the scintillation spectra to alpha particles of sample were monitored. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanoparticles" title="nanoparticles">nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=luminescence" title=" luminescence"> luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=sol%20gel" title=" sol gel"> sol gel</a>, <a href="https://publications.waset.org/abstracts/search?q=scintillator" title=" scintillator"> scintillator</a> </p> <a href="https://publications.waset.org/abstracts/57403/study-of-nanocrystalline-scintillator-for-alpha-particles-detection" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57403.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">599</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">363</span> Dy3+ Ions Doped Single and Mixed Alkali Fluoro Tungstunate Tellurite Glasses for Laser and White LED Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Allam%20Srinivasa%20Rao">Allam Srinivasa Rao</a>, <a href="https://publications.waset.org/abstracts/search?q=Ch.%20Annapurna%20Devi"> Ch. Annapurna Devi</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Vijaya%20Prakash"> G. Vijaya Prakash</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A new-fangled series of white light emitting 1 mol% of Dy3+ ions doped Single-Alklai and Mixed-Alkai fluoro tungstunate tellurite glasses have been prepared using melt quenching technique and their spectroscopic behaviour was investigated by studying XRD, optical absorption, photoluminescence and lifetime measurements. The bonding parameter studies reveal the ionic nature of the Dy-O bond in the present glasses. From the absorption spectra, the Judd–Ofelt (J-O) intensity parameters have been determined which are used to explore the nature of bonding and symmetry orientation of the Dy–ligand field environment. The evaluated J-O parameters (Ω_4>Ω_2>Ω_6) for all the glasses are following the same trend. The photoluminescence spectra of all the glasses exhibit two intensified peaks in blue and Yellow regions corresponding to the transitions 4F9/2→6H15/2 (483 nm) and 4F9/2→6H13/2 (575 nm) respectively. From the photoluminescence spectra, it is observed that the luminescence intensity is maximum for Dy3+ ion doped potassium combination of fluoro tungstunate tellurite glass (TeWK: 1Dy). The J-O intensity parameters have been used to determine the various radiative properties for the different emission transitions from the 4F9/2 fluorescent level. The highest emission cross-section and branching ratio values observed for the 4F9/2→6H15/2 and 4F9/2→6H13/2 transitions suggest the possible laser action in the visible region from these glasses. By using the experimental lifetimes (τ_exp) measured from the decay spectral features and radiative lifetimes (τ_R), the quantum efficiencies (η) for all the glasses have been evaluated. Among all the glasses, the potassium combined fluoro tungstunate tellurite (TeWK:1Dy) glass has the highest quantum efficiency (94.6%). The CIE colour chromaticity coordinates (x, y), (u, v), colour correlated temperature (CCT) and Y/B ratio were also estimated from the photoluminescence spectra for different compositions of glasses. The (x, y) and (u, v) chromaticity colour coordinates fall within the white light region and the white light can be tuned by varying the composition of the glass. From all these studies, we are suggesting that the 1 mol% of Dy3+ ions doped TeWK glass is more suitable for lasing and White-LED applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dysprosium" title="dysprosium">dysprosium</a>, <a href="https://publications.waset.org/abstracts/search?q=Judd-Ofelt%20parameters" title=" Judd-Ofelt parameters"> Judd-Ofelt parameters</a>, <a href="https://publications.waset.org/abstracts/search?q=photo%20luminescence" title=" photo luminescence"> photo luminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=tellurite%20glasses" title=" tellurite glasses"> tellurite glasses</a> </p> <a href="https://publications.waset.org/abstracts/46832/dy3-ions-doped-single-and-mixed-alkali-fluoro-tungstunate-tellurite-glasses-for-laser-and-white-led-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46832.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">224</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">362</span> Sol-Gel Erbium-Doped Silica-Hafnia Planar Waveguides</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mustapha%20El%20Mataouy">Mustapha El Mataouy</a>, <a href="https://publications.waset.org/abstracts/search?q=Abellatif%20Aaliti"> Abellatif Aaliti</a>, <a href="https://publications.waset.org/abstracts/search?q=Mouhamed%20Khaddor"> Mouhamed Khaddor</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Erbium actived silica-hafnia planar waveguides have been prepared by sol-gel route. The films were deposited on vitreous silica substrates using dip-coating technique. The parameters of preparation have been chosen to optimize the waveguides for operation in the near infrared (NIR) region, and to increase the luminescence efficiency of the metastable 4I13/2 state of Erbium ions. The waveguides properties were determined by m-lines spectroscopy, loss measurements. Waveguide Raman and luminescence spectroscopy were used to obtain information about the structure of the prepared films and about the dynamical process related to the emission in the C telecom band (1530nm-1565nm) of the Erbium ions. The results are discussed with the aim of comparing the structural and optical properties of Erbium activated silica-hafnia planar waveguides with different molar ratio of Si / Hf. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=erbium" title="erbium">erbium</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20amplifiers" title=" optical amplifiers"> optical amplifiers</a>, <a href="https://publications.waset.org/abstracts/search?q=silica-hafnia" title=" silica-hafnia"> silica-hafnia</a>, <a href="https://publications.waset.org/abstracts/search?q=sol-gel" title=" sol-gel"> sol-gel</a>, <a href="https://publications.waset.org/abstracts/search?q=waveguide" title=" waveguide"> waveguide</a> </p> <a href="https://publications.waset.org/abstracts/59785/sol-gel-erbium-doped-silica-hafnia-planar-waveguides" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59785.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">230</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=5">5</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=6">6</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=7">7</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=8">8</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=9">9</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=10">10</a></li> <li class="page-item disabled"><span class="page-link">...</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=13">13</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=14">14</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=yellow%20luminescence&page=2" rel="next">&rsaquo;</a></li> </ul> </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 href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 16th foundational anniversary</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Account <li><a href="https://waset.org/profile">My Account</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Explore <li><a href="https://waset.org/disciplines">Disciplines</a></li> <li><a href="https://waset.org/conferences">Conferences</a></li> <li><a href="https://waset.org/conference-programs">Conference Program</a></li> <li><a href="https://waset.org/committees">Committees</a></li> <li><a href="https://publications.waset.org">Publications</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Research <li><a href="https://publications.waset.org/abstracts">Abstracts</a></li> <li><a href="https://publications.waset.org">Periodicals</a></li> <li><a href="https://publications.waset.org/archive">Archive</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Open Science <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Science-Philosophy.pdf">Open Science Philosophy</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Science-Award.pdf">Open Science Award</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Society-Open-Science-and-Open-Innovation.pdf">Open Innovation</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Postdoctoral-Fellowship-Award.pdf">Postdoctoral Fellowship Award</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Scholarly-Research-Review.pdf">Scholarly Research Review</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Support <li><a href="https://waset.org/page/support">Support</a></li> <li><a href="https://waset.org/profile/messages/create">Contact Us</a></li> <li><a href="https://waset.org/profile/messages/create">Report Abuse</a></li> </ul> </div> </div> </div> </div> </div> <div class="container text-center"> <hr style="margin-top:0;margin-bottom:.3rem;"> <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank" class="text-muted small">Creative Commons Attribution 4.0 International License</a> <div id="copy" class="mt-2">© 2024 World Academy of Science, Engineering and Technology</div> </div> </footer> <a href="javascript:" id="return-to-top"><i class="fas fa-arrow-up"></i></a> <div class="modal" id="modal-template"> <div class="modal-dialog"> <div class="modal-content"> <div class="row m-0 mt-1"> <div class="col-md-12"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> </div> </div> <div class="modal-body"></div> </div> </div> </div> <script src="https://cdn.waset.org/static/plugins/jquery-3.3.1.min.js"></script> <script src="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/js/bootstrap.bundle.min.js"></script> <script src="https://cdn.waset.org/static/js/site.js?v=150220211556"></script> <script> jQuery(document).ready(function() { /*jQuery.get("https://publications.waset.org/xhr/user-menu", function (response) { jQuery('#mainNavMenu').append(response); });*/ jQuery.get({ url: "https://publications.waset.org/xhr/user-menu", cache: false }).then(function(response){ jQuery('#mainNavMenu').append(response); }); }); </script> </body> </html>