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recombination</title> <meta name="description" content="Search results for: meiotic recombination"> <meta name="keywords" content="meiotic recombination"> <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 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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="meiotic recombination"> <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> 141</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: meiotic recombination</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">81</span> Enhancement in the Absorption Efficiency of GaAs/InAs Nanowire Solar Cells through a Decrease in Light Reflection</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Latef%20M.%20Ali">Latef M. Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Farah%20A.%20Abed"> Farah A. Abed</a>, <a href="https://publications.waset.org/abstracts/search?q=Zheen%20L.%20Mohammed"> Zheen L. Mohammed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the effect of the Barium fluoride (BaF2) layer on the absorption efficiency of GaAs/InAs nanowire solar cells was investigated using the finite difference time domain (FDTD) method. By inserting the BaF2 as antireflection with the dominant size of 10 nm to fill the space between the shells of wires on the Si (111) substrate. The absorption is significantly improved due to the strong reabsorption of light reflected at the shells and compared with the reference cells. The present simulation leads to a higher absorption efficiency (Qabs) and reaches a value of 97%, and the external quantum efficiencies (EQEs) above 92% are observed. The current density (Jsc) increases by 0.22 mA/cm2 and the open-circuit voltage (Voc) is enhanced by 0.11 mV. it explore the design and optimization of high-efficiency solar cells on low-reflective absorption efficiency of GaAs/InAs using simulation software tool. The changes in the core and shell diameters profoundly affects the generation and recombination process, thus affecting the conversion efficiency of solar cells. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanowire%20solar%20cells" title="nanowire solar cells">nanowire solar cells</a>, <a href="https://publications.waset.org/abstracts/search?q=absorption%20efficiency" title=" absorption efficiency"> absorption efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=photovoltaic" title=" photovoltaic"> photovoltaic</a>, <a href="https://publications.waset.org/abstracts/search?q=band%20structures" title=" band structures"> band structures</a>, <a href="https://publications.waset.org/abstracts/search?q=FDTD%20simulation" title=" FDTD simulation"> FDTD simulation</a> </p> <a href="https://publications.waset.org/abstracts/182969/enhancement-in-the-absorption-efficiency-of-gaasinas-nanowire-solar-cells-through-a-decrease-in-light-reflection" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182969.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">49</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">80</span> Photoluminescence Study of Erbium-Mixed Alkylated 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> Alkylated silicon nanocrystals (C11-SiNCs) were prepared successfully by galvanostatic etching of p-Si(100) wafers followed by a thermal hydrosilation reaction of 1-undecene in refluxing toluene in order to extract C11-SiNCs from porous silicon. Erbium trichloride was added to alkylated SiNCs using a simple mixing chemical route. To the best of our knowledge, this is the first investigation on mixing SiNCs with erbium ions (III) by this chemical method. The chemical characterization of C11-SiNCs and their mixtures with Er3+ (Er/C11-SiNCs) were carried out using X-ray photoemission spectroscopy (XPS). The optical properties of C11-SiNCs and their mixtures with Er3+ were investigated using Raman spectroscopy and photoluminescence (PL). The erbium-mixed alkylated SiNCs shows an orange PL emission peak at around 595 nm that originates from radiative recombination of Si. Er/C11-SiNCs mixture also exhibits a weak PL emission peak at 1536 nm that originates from the intra-4f transition in erbium ions (Er3+). The PL peak of Si in Er/C11-SiNCs mixture is increased in the intensity up to three times as compared to pure C11-SiNCs. The collected data suggest that this chemical mixing route leads instead to a transfer of energy from erbium ions to alkylated SiNCs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photoluminescence" title="photoluminescence">photoluminescence</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=erbium" title=" erbium"> erbium</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/22122/photoluminescence-study-of-erbium-mixed-alkylated-silicon-nanocrystals" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22122.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">366</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">79</span> Defect Induced Enhanced Photoresponse in Graphene</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Prarthana%20Gowda">Prarthana Gowda</a>, <a href="https://publications.waset.org/abstracts/search?q=Tushar%20Sakorikar"> Tushar Sakorikar</a>, <a href="https://publications.waset.org/abstracts/search?q=Siva%20K.%20Reddy"> Siva K. Reddy</a>, <a href="https://publications.waset.org/abstracts/search?q=Darim%20B.%20Ferry"> Darim B. Ferry</a>, <a href="https://publications.waset.org/abstracts/search?q=Abha%20Misra"> Abha Misra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Graphene, a two-dimensional carbon allotrope has demonstrated excellent electrical, mechanical and optical properties. A tunable band gap of grapheme demonstrated broad band absorption of light with a response time of picoseconds, however it suffers a fast recombination of the photo generated carriers. Many reports have explored to overcome this problem; in this presentation, we discuss defect induced enhanced photoresponse in a few layer graphene (FLG) due to exposure of infrared (IR) radiation. The two and four-fold enhancement in the photocurrent is achieved by addition of multiwalled carbon nano tubes (MWCNT) to an FLG surface and also creating the wrinkles in the FLG (WG) respectively. In our study, it is also inferred that the photo current generation is highly dependent on the morphological defects on the graphene. It is observed that the FLG (without defects) generates the photo current instantaneously, and after a prolonged exposure to the IR radiation decays the generation rate. Importantly, the presence of MWCNT on FLG enhances the stability and WG presented both stable as well as enhanced photo response. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=graphene" title="graphene">graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=multiwalled%20carbon%20nano%20tubes" title=" multiwalled carbon nano tubes"> multiwalled carbon nano tubes</a>, <a href="https://publications.waset.org/abstracts/search?q=wrinkled%20graphene" title=" wrinkled graphene"> wrinkled graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=photo%20detector" title=" photo detector"> photo detector</a>, <a href="https://publications.waset.org/abstracts/search?q=photo%20current" title=" photo current "> photo current </a> </p> <a href="https://publications.waset.org/abstracts/13611/defect-induced-enhanced-photoresponse-in-graphene" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13611.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">414</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">78</span> Photocatalytic Degradation of Methyl Orange by Ag Doped La₂Ti₂O₇</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hong%20Zhang">Hong Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Photocatalytic degradation is an appealing process to remove organic contaminants from industrial wastewater, but usually impeded by less effective photocatalysts. Here, we successfully synthesized Ag doped La₂Ti₂O₇ via a simple sol-gel route for photocatalytic methyl orange (MO) degradation. Their crystal structures, morphology, surface area and optical absorption activity were systematically characterized by X-ray diffraction, scanning electron microscope, BET N₂ adsorption-desorption study, and UV-vis diffuse reflectance spectra. The photocatalytic activity was evaluated by MO photodegradation under a 300 W xenon lamp. The results indicate that the doping of Ag has effectively narrowed the band gap, increased the specific area of La2Ti2O7, and supressed the recombination of photogenerated carriers. Compared with the pristine La₂Ti₂O₇, La₁.₉Ag₀.₁Ti₂O₇-δ revealed a superior performance for MO degradation with a degradation rate of 97% in only 60 min. Also, the pseudo-first order kinetic constant for La₁.₉Ag₀.₁Ti₂O₇-δ is ~ 11 times higher than that of undoped sample. The outstanding performance of Ag modified La₂Ti₂O₇ is probably attributed to the integrated factors. Active species trapping experiments indicated that h+ plays a critical role in MO degradation, while •O₂− has slight effect on the photocatalytic activity and the function of •OH can almost be neglected. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ag%20doped%20La%E2%82%82Ti%E2%82%82O%E2%82%87" title="Ag doped La₂Ti₂O₇">Ag doped La₂Ti₂O₇</a>, <a href="https://publications.waset.org/abstracts/search?q=methyl%20orange" title=" methyl orange"> methyl orange</a>, <a href="https://publications.waset.org/abstracts/search?q=photodegradation" title=" photodegradation"> photodegradation</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20plasmon%20resonance" title=" surface plasmon resonance"> surface plasmon resonance</a> </p> <a href="https://publications.waset.org/abstracts/153252/photocatalytic-degradation-of-methyl-orange-by-ag-doped-la2ti2o7" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/153252.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">107</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">77</span> Mechanism of Charge Transport in the Interface of CsSnI₃-FASnI₃ Perovskite Based Solar Cell</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seyedeh%20Mozhgan%20Seyed-Talebi">Seyedeh Mozhgan Seyed-Talebi</a>, <a href="https://publications.waset.org/abstracts/search?q=Weng-Kent%20Chan"> Weng-Kent Chan</a>, <a href="https://publications.waset.org/abstracts/search?q=Hsin-Yi%20Tiffany%20Chen"> Hsin-Yi Tiffany Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Lead-free perovskite photovoltaic (PV) technology employing non-toxic tin halide perovskite absorbers is pivotal for advancing perovskite solar cell (PSC) commercialization. Despite challenges posed by perovskite sensitivity to oxygen and humidity, our study utilizes DFT calculations using VASP and NanoDCAL software and SCAPS-1D simulations to elucidate the charge transport mechanism at the interface of CsSnI₃-FASnI₃ heterojunction. Results reveal how inherent electric fields facilitate efficient carrier transport, reducing recombination losses. We predict optimized power conversion efficiencies (PCEs) and highlight the potential of CsSnI3-FASnI3 heterojunctions for cost-effective and efficient charge transport layer-free (CTLF) photovoltaic devices. Our study provides insights into the future direction of recognizing more efficient, nontoxic heterojunction perovskite devices. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=charge%20transport%20layer%20free" title="charge transport layer free">charge transport layer free</a>, <a href="https://publications.waset.org/abstracts/search?q=CsSnI%E2%82%83-FASnI%E2%82%83%20heterojunction" title=" CsSnI₃-FASnI₃ heterojunction"> CsSnI₃-FASnI₃ heterojunction</a>, <a href="https://publications.waset.org/abstracts/search?q=lead-free%20perovskite%20solar%20cell" title=" lead-free perovskite solar cell"> lead-free perovskite solar cell</a>, <a href="https://publications.waset.org/abstracts/search?q=tin%20halide%20perovskite." title=" tin halide perovskite."> tin halide perovskite.</a>, <a href="https://publications.waset.org/abstracts/search?q=Charge%20transport%20layer%20free" title=" Charge transport layer free"> Charge transport layer free</a> </p> <a href="https://publications.waset.org/abstracts/186055/mechanism-of-charge-transport-in-the-interface-of-cssni3-fasni3-perovskite-based-solar-cell" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186055.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">45</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">76</span> Analysis of the Simulation Merger and Economic Benefit of Local Farmers' Associations in Taiwan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lu%20Yung-Hsiang">Lu Yung-Hsiang</a>, <a href="https://publications.waset.org/abstracts/search?q=Chang%20Kuming"> Chang Kuming</a>, <a href="https://publications.waset.org/abstracts/search?q=Dai%20Yi-Fang"> Dai Yi-Fang</a>, <a href="https://publications.waset.org/abstracts/search?q=Liao%20Ching-Yi"> Liao Ching-Yi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> According to Taiwan’s administrative division of future land planning may lead farmer association and service areas facing recombination or merger. Thus, merger combination and the economic benefit of the farmer association are worth to be discussed. The farmer association in the merger, which may cause some then will not be consolidated, or consolidate two, or ever more to one association. However, under what condition to merge is greatest, as one of observation of this study. In addition, research without using simulation methods and only on the credit department rather whole farmer association. Therefore, this paper will use the simulation approach, and examine both the merge of farmer association and the condition under which the benefits are the greatest. The data of this study set include 266 farmer associations in Taiwan period 2012 to 2013. Empirical results showed that the number of the farmer association optimal simulation combination is 108.After the merger from the first stage can be reduced by 60% of the farmers’ association. The cost saving effects of the post-merger is not different. The cost efficiency of the farmers’ association improved it. The economies of scale and scope would decrease by the merger. The research paper hopes the finding will benefit the future merger of the farmers’ association. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=simulation%20merger" title="simulation merger">simulation merger</a>, <a href="https://publications.waset.org/abstracts/search?q=farmer%20association" title=" farmer association"> farmer association</a>, <a href="https://publications.waset.org/abstracts/search?q=assurance%20region" title=" assurance region"> assurance region</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20envelopment%20analysis" title=" data envelopment analysis"> data envelopment analysis</a> </p> <a href="https://publications.waset.org/abstracts/42991/analysis-of-the-simulation-merger-and-economic-benefit-of-local-farmers-associations-in-taiwan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42991.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">350</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">75</span> Combined Influence of Charge Carrier Density and Temperature on Open-Circuit Voltage in Bulk Heterojunction Organic Solar Cells</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Douglas%20Yeboah">Douglas Yeboah</a>, <a href="https://publications.waset.org/abstracts/search?q=Monishka%20Narayan"> Monishka Narayan</a>, <a href="https://publications.waset.org/abstracts/search?q=Jai%20Singh"> Jai Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> One of the key parameters in determining the power conversion efficiency (PCE) of organic solar cells (OSCs) is the open-circuit voltage, however, it is still not well understood. In order to examine the performance of OSCs, it is necessary to understand the losses associated with the open-circuit voltage and how best it can be improved. Here, an analytical expression for the open-circuit voltage of bulk heterojunction (BHJ) OSCs is derived from the charge carrier densities without considering the drift-diffusion current. The open-circuit voltage thus obtained is dependent on the donor-acceptor band gap, the energy difference between the highest occupied molecular orbital (HOMO) and the hole quasi-Fermi level of the donor material, temperature, the carrier density (electrons), the generation rate of free charge carriers and the bimolecular recombination coefficient. It is found that open-circuit voltage increases when the carrier density increases and when the temperature decreases. The calculated results are discussed in view of experimental results and agree with them reasonably well. Overall, this work proposes an alternative pathway for improving the open-circuit voltage in BHJ OSCs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=charge%20carrier%20density" title="charge carrier density">charge carrier density</a>, <a href="https://publications.waset.org/abstracts/search?q=open-circuit%20voltage" title=" open-circuit voltage"> open-circuit voltage</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20solar%20cells" title=" organic solar cells"> organic solar cells</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a> </p> <a href="https://publications.waset.org/abstracts/68927/combined-influence-of-charge-carrier-density-and-temperature-on-open-circuit-voltage-in-bulk-heterojunction-organic-solar-cells" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68927.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">373</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">74</span> Improved Hydrogen Sorption Kinetics of Compacted LiNH₂-LiH Based Small Hydrogen Storage Tank by Doping with TiF₄ and MWCNTs </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chongsutthamani%20Sitthiwet">Chongsutthamani Sitthiwet</a>, <a href="https://publications.waset.org/abstracts/search?q=Praphatsorn%20Plerdsranoy"> Praphatsorn Plerdsranoy</a>, <a href="https://publications.waset.org/abstracts/search?q=Palmarin%20Dansirima"> Palmarin Dansirima</a>, <a href="https://publications.waset.org/abstracts/search?q=Priew%20Eiamlamai"> Priew Eiamlamai</a>, <a href="https://publications.waset.org/abstracts/search?q=Oliver%20Utke"> Oliver Utke</a>, <a href="https://publications.waset.org/abstracts/search?q=Rapee%20Utke"> Rapee Utke</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hydrogen storage tank containing compacted LiNH2-LiH is developed by doping with TiF₄ and multi-walled nanotubes (MWCNTs) to study kinetic properties. Transition metal-based catalyst (TiF₄) provides the catalytic effect on hydrogen dissociation/recombination, while MWCNTs benefit thermal conductivity and hydrogen permeability during de/rehydrogenation process. The Enhancement of dehydrogenation kinetics is observed from the single-step reaction at a narrower and lower temperature range of 150-350 ºC (100 ºC lower than the compacted LiNH₂-LiH without additives) as well as long plateau temperature and constant hydrogen flow rate (50 SCCM) up to 30 min during desorption. Besides, Hydrogen contents de/absorbed during 5-6 cycles increase from 1.90-2.40 to 3.10-4.70 wt. % H₂ (from 29 to up to 80 % of theoretical capacity). In the process, Li₅TiN₃ is detected upon cycling probably absorbs NH₃ to form Li₅TiN₃(NH₃)x, which is favoring hydrogen sorption properties of the LiNH₂-LiH system. Importantly, the homogeneous reaction mechanisms and performances are found at all positions inside the tank of compacted LiNH₂-LiH doped with TiF₄ and MWCNTs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon" title="carbon">carbon</a>, <a href="https://publications.waset.org/abstracts/search?q=hydride" title=" hydride"> hydride</a>, <a href="https://publications.waset.org/abstracts/search?q=kinetics" title=" kinetics"> kinetics</a>, <a href="https://publications.waset.org/abstracts/search?q=dehydrogenation" title=" dehydrogenation"> dehydrogenation</a> </p> <a href="https://publications.waset.org/abstracts/121181/improved-hydrogen-sorption-kinetics-of-compacted-linh2-lih-based-small-hydrogen-storage-tank-by-doping-with-tif4-and-mwcnts" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/121181.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">145</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">73</span> Modelling and Simulation of Light and Temperature Efficient Interdigitated Back- Surface-Contact Solar Cell with 28.81% Efficiency Rate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahfuzur%20Rahman">Mahfuzur Rahman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Back-contact solar cells improve optical properties by moving all electrically conducting parts to the back of the cell. The cell's structure allows silicon solar cells to surpass the 25% efficiency barrier and interdigitated solar cells are now the most efficient. In this work, the fabrication of a light, efficient and temperature resistant interdigitated back contact (IBC) solar cell is investigated. This form of solar cell differs from a conventional solar cell in that the electrodes are located at the back of the cell, eliminating the need for grids on the top, allowing the full surface area of the cell to receive sunlight, resulting in increased efficiency. In this project, we will use SILVACO TCAD, an optoelectronic device simulator, to construct a very thin solar cell with dimensions of 100x250um in 2D Luminous. The influence of sunlight intensity and atmospheric temperature on solar cell output power is highly essential and it has been explored in this work. The cell's optimum performance with 150um bulk thickness provides 28.81% efficiency with an 87.68% fill factor rate making it very thin, flexible and resilient, providing diverse operational capabilities. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=interdigitated" title="interdigitated">interdigitated</a>, <a href="https://publications.waset.org/abstracts/search?q=shading" title=" shading"> shading</a>, <a href="https://publications.waset.org/abstracts/search?q=recombination%20loss" title=" recombination loss"> recombination loss</a>, <a href="https://publications.waset.org/abstracts/search?q=incident-plane" title=" incident-plane"> incident-plane</a>, <a href="https://publications.waset.org/abstracts/search?q=drift-diffusion" title=" drift-diffusion"> drift-diffusion</a>, <a href="https://publications.waset.org/abstracts/search?q=luminous" title=" luminous"> luminous</a>, <a href="https://publications.waset.org/abstracts/search?q=SILVACO" title=" SILVACO"> SILVACO</a> </p> <a href="https://publications.waset.org/abstracts/146112/modelling-and-simulation-of-light-and-temperature-efficient-interdigitated-back-surface-contact-solar-cell-with-2881-efficiency-rate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146112.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">146</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">72</span> Astaxanthin Induces Cytotoxicity through Down-Regulating Rad51 Expression in Human Lung Cancer Cells</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jyh-Cheng%20Chen">Jyh-Cheng Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Tai-Jing%20Wang"> Tai-Jing Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yun-Wei%20Lin"> Yun-Wei Lin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Astaxanthin has been demonstrated to exhibit a wide range of beneficial effects including anti-inflammatory and anti-cancer properties. However, the molecular mechanism of astaxanthin-induced cytotoxicity in non-small cell lung cancer (NSCLC) cells has not been identified. Rad51 plays a central role in homologous recombination and high levels of Rad51 expression are observed in chemo- or radioresistant carcinomas. In this study, astaxanthin treatment inhibited cell viability and proliferation of two NSCLC cells, A549 and H1703. Treatment with astaxanthin decreased Rad51 expression and phospho-AKT protein level in a time and dose-dependent manner. Furthermore, expression of constitutively active AKT (AKT-CA) vector significantly rescued the decreased Rad51 protein and mRNA levels in astaxanthin-treated NSCLC cells. Combined treatment with PI3K inhibitors (LY294002 or wortmannin) and astaxanthin further decreased the Rad51 expression in NSCLC cells. Knockdown of Rad51 enhanced astaxanthin-induced cytotoxicity and growth inhibition in NSCLC cells. These findings may have implications for the rational design of future drug regimens incorporating astaxanthin for the treatment of NSCLC. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=astaxanthin" title="astaxanthin">astaxanthin</a>, <a href="https://publications.waset.org/abstracts/search?q=cytotoxicity" title=" cytotoxicity"> cytotoxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=AKT" title=" AKT"> AKT</a>, <a href="https://publications.waset.org/abstracts/search?q=non-small%20cell%20lung%20cancer" title=" non-small cell lung cancer"> non-small cell lung cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=PI3K" title=" PI3K"> PI3K</a> </p> <a href="https://publications.waset.org/abstracts/42079/astaxanthin-induces-cytotoxicity-through-down-regulating-rad51-expression-in-human-lung-cancer-cells" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42079.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">297</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">71</span> The Photocatalytic Approach for the Conversion of Polluted Seawater CO₂ into Renewable Source of Energy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yasar%20N.%20Kavil">Yasar N. Kavil</a>, <a href="https://publications.waset.org/abstracts/search?q=Yasser%20A.%20Shaban"> Yasser A. Shaban</a>, <a href="https://publications.waset.org/abstracts/search?q=Radwan%20K.%20Al%20Farawati"> Radwan K. Al Farawati</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20I.%20Orif"> Mohamed I. Orif</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahed%20U.%20M.%20Khanc"> Shahed U. M. Khanc</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Photocatalytic way of reduction of CO₂ in polluted seawater into chemical fuel, methanol, was successfully gained over Cu/C-co-doped TiO₂ nanoparticles under UV and natural sunlight. A homemade stirred batch annular reactor was used to carry out the photocatalytic reduction experiments. Photocatalysts with various Cu loadings (0, 0.5, 1, 3, 5 and 7 wt.%) were synthesized by the sol-gel procedure and were characterized by XRD, SEM, UV–Vis, FTIR, and XPS. The photocatalytic production of methanol was promoted by the co-doping with C and Cu into TiO₂. This improvement was attributed to the modification of bandgap energy and the hindrance of the charges recombination. The polluted seawater showing the yield depended on its background hydrographic parameters. We assessed two types of polluted seawater system, the observed yield was 2910 and 990 µmol g⁻¹ after 5 h of illumination under UV and natural sunlight respectively in system 1 and the corresponding yield in system 2 was 2250 and 910 µmol g⁻¹ after 5 h of illumination. The production of methanol in the case of oxygen-depleted water was low, this is mainly attributed to the competition of methanogenic bacteria over methanol production. The results indicated that the methanol yield produced by Cu-C/TiO₂ was much higher than those of carbon-modified titanium oxide (C/TiO₂) and Degussa (P25-TiO₂). Under the current experimental condition, the optimum loading was achieved by the doping of 3 wt % of Cu. The highest methanol yield was obtained over 1 g L-1 of 3wt% Cu/C-TiO₂. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CO%E2%82%82%20photoreduction" title="CO₂ photoreduction">CO₂ photoreduction</a>, <a href="https://publications.waset.org/abstracts/search?q=copper" title=" copper"> copper</a>, <a href="https://publications.waset.org/abstracts/search?q=Cu%2FC-co-doped%20TiO%E2%82%82" title=" Cu/C-co-doped TiO₂"> Cu/C-co-doped TiO₂</a>, <a href="https://publications.waset.org/abstracts/search?q=methanol" title=" methanol"> methanol</a>, <a href="https://publications.waset.org/abstracts/search?q=seawater" title=" seawater"> seawater</a> </p> <a href="https://publications.waset.org/abstracts/74488/the-photocatalytic-approach-for-the-conversion-of-polluted-seawater-co2-into-renewable-source-of-energy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74488.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">278</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">70</span> Optical Characterization of Erbium-Mixed 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=Ben%20R.%20Horrocks"> Ben R. Horrocks</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The structural characterization of silicon nano crystals (SiNCs) have been carried out using transmission electron microscope (TEM) and atomic force microscopy (AFM). SiNCs are crystalline with an average diameter of 65 nm. Erbium trichloride was added to silicon nano crystals using a simple chemical procedure. Erbium is useful in this context because it has a narrow emission band at ⋍1536 nm which corresponds to a standard optical telecommunication wavelength. The optical properties of SiNCs and erbium-mixed SiNCs samples have been characterized using UV-vis spectroscopy, confocal Raman spectroscopy and photoluminescence spectroscopy (PL). SiNCs and erbium-mixed SiNCs samples exhibit an orange PL emission peak at around 595 nm that arise from radiative recombination of Si. Erbium-mixed SiNCs also shows a weak PL emission peak at ⋍1536 nm that attributed to the intra-4f transition in erbium ions. The intensity of the PL peak of Si in erbium-mixed SiNCs is increased in the intensity up to ×3 as compared to pure SiNCs. It was observed that intensity of 1536 nm peak decreased dramatically in the presence of silicon nano crystals and the PL emission peak of silicon nano crystals is increased. Therefore, the resulted data present that the energy transfer from erbium ions to SiNCs due to the chemical mixing method which used in this work. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Silicon%20Nanocrystals%20%28SiNCs%29" title="Silicon Nanocrystals (SiNCs)">Silicon Nanocrystals (SiNCs)</a>, <a href="https://publications.waset.org/abstracts/search?q=Erbium%20Ion" title=" Erbium Ion"> Erbium Ion</a>, <a href="https://publications.waset.org/abstracts/search?q=photoluminescence" title=" photoluminescence"> photoluminescence</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20transfer" title=" energy transfer"> energy transfer</a> </p> <a href="https://publications.waset.org/abstracts/28804/optical-characterization-of-erbium-mixed-silicon-nanocrystals" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28804.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">375</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">69</span> Efficient Photocatalytic Degradation of Tetracycline Hydrochloride Using Modified Carbon Nitride CCN/Bi₂WO₆ Heterojunction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Syed%20Najeeb-Uz-Zaman%20Haider">Syed Najeeb-Uz-Zaman Haider</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Juan"> Yang Juan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Antibiotic overuse raises environmental concerns, boosting the demand for efficient removal from pharmaceutical wastewater. Photocatalysis, particularly using semiconductor photocatalysts, offers a promising solution and garners significant scientific interest. In this study, a Z-scheme 0.15BWO/CCN heterojunction was developed, analyzed, and employed for the photocatalytic degradation of tetracycline hydrochloride (TC) under visible light. The study revealed that the dosage of 0.15BWO@CCN and the presence of coexisting ions significantly influenced the degradation efficiency, achieving up to 87% within 20 minutes under optimal conditions (at pH 9-11/strongly basic conditions) while maintaining 84% efficiency under standard conditions (unaltered pH). Photoinduced electrons gathered on the conduction band of BWO while holes accumulated on the valence band of CCN, creating more favorable conditions to produce superoxide and hydroxyl radicals. Additionally, through comprehensive experimental analysis, the degradation pathway and mechanism were thoroughly explored. The superior photocatalytic performance of 0.15BWO@CCN was attributed to its Z-scheme heterojunction structure, which significantly reduced the recombination of photoinduced electrons and holes. The radicals produced were identified using ESR, and their involvement in tetracycline degradation was further analyzed through active species trapping experiments. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CCN" title="CCN">CCN</a>, <a href="https://publications.waset.org/abstracts/search?q=Bi%E2%82%82WO%E2%82%86" title=" Bi₂WO₆"> Bi₂WO₆</a>, <a href="https://publications.waset.org/abstracts/search?q=TC" title=" TC"> TC</a>, <a href="https://publications.waset.org/abstracts/search?q=photocatalytic%20degradation" title=" photocatalytic degradation"> photocatalytic degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=heterojunction" title=" heterojunction"> heterojunction</a> </p> <a href="https://publications.waset.org/abstracts/186128/efficient-photocatalytic-degradation-of-tetracycline-hydrochloride-using-modified-carbon-nitride-ccnbi2wo6-heterojunction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186128.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">44</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">68</span> TiO2 Nanowires as Efficient Heterogeneous Photocatalysts for Waste-Water Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gul%20Afreen">Gul Afreen</a>, <a href="https://publications.waset.org/abstracts/search?q=Sreedevi%20Upadhyayula"> Sreedevi Upadhyayula</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahendra%20K.%20Sunkara"> Mahendra K. Sunkara</a> </p> <p class="card-text"><strong>Abstract:</strong></p> One-dimensional (1D) nanostructures like nanowires, nanotubes, and nanorods find variety of practical application owing to their unique physico-chemical properties. In this work, TiO<sub>2</sub> nanowires were synthesized by direct oxidation of titanium particles in a unique microwave plasma jet reactor. The prepared TiO<sub>2 </sub>nanowires manifested the flexible features, and were characterized by using X-ray diffraction, Brunauer-Emmett-Teller (BET) surface area analyzer, UV-Visible and FTIR spectrophotometers, Scanning electron microscope, and Transmission electron microscope. Further, the photodegradation efficiency of these nanowires were tested against toxic organic dye like methylene blue (MB) and the results were compared with the commercial TiO<sub>2</sub>. It was found that TiO<sub>2</sub> nanowires exhibited superior photocatalytic performance (89%) as compared to commercial TiO<sub>2 </sub>(75%) after 60 min of reaction. This is attributed to the lower recombination rate and increased interfacial charge transfer in TiO<sub>2</sub> nanowire. Pseudo-first order kinetic modelling performed with the experimental results revealed that the rate constant of photodegradation in case of TiO<sub>2</sub> nanowire was 1.3 times higher than that of commercial TiO<sub>2</sub>. Superoxide radical (O<sub>2</sub>˙<sup>−</sup>) was found to be the major contributor in the photodegradation mechanism. Based on the trapping experiments, a plausible mechanism of the photocatalytic reaction is discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heterogeneous%20catalysis" title="heterogeneous catalysis">heterogeneous catalysis</a>, <a href="https://publications.waset.org/abstracts/search?q=photodegradation" title=" photodegradation"> photodegradation</a>, <a href="https://publications.waset.org/abstracts/search?q=reactive%20oxygen%20species" title=" reactive oxygen species"> reactive oxygen species</a>, <a href="https://publications.waset.org/abstracts/search?q=TiO%E2%82%82%20nanowires" title=" TiO₂ nanowires"> TiO₂ nanowires</a> </p> <a href="https://publications.waset.org/abstracts/113364/tio2-nanowires-as-efficient-heterogeneous-photocatalysts-for-waste-water-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/113364.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">144</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">67</span> Iron and/or Titanium Containing Microporous Silico-Alumino-Phosphates as a Photocatalyst for Hydrogen Production by Water Splitting</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=I.%20Ben%20Kaddour">I. Ben Kaddour</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Larbaoui"> S. Larbaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Since their first synthesis, the Silicoaluminophosphates materials have proved their efficiency as a good adsorbent and catalyst in several environmental and energetic applications. In this work, the photocatalytic hydrogen production from water splitting reactions has been conducted under visible radiations in the presence of a series of iron and/or titanium-containing microporous silico-alumino-phosphates materials synthesized by hydrothermal method, using triethylamine as an organic structuring agent to obtain the AFI structure type. These photo-catalysts were then characterized by various physicochemical methods to determine their structural, textural and morphological properties such as X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), scanning electron microscopy (SEM) coupled with X rays microanalysis, nitrogen adsorption measurements, UV-visible diffuse reflectance spectroscopy (UV-Vis-DRS), and X-rays photoelectron spectroscopy (XPS) and the analysis revealed that these materials have significant photocatalytic properties. The hydrogen production process has been followed by photoelectrochemical characterization (PEC). The results showed that hydrogen is the only gas produced, and the reaction takes place in the conduction band where water is reduced to hydrogen. The electron recombination has also been avoided, as holes are entrapped using hole scavengers. In addition, these catalysts have been shown to remain stable during reuse for up to five cycles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photocatalysis" title="photocatalysis">photocatalysis</a>, <a href="https://publications.waset.org/abstracts/search?q=SAPO-5" title=" SAPO-5"> SAPO-5</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrothermal%20synthesis" title=" hydrothermal synthesis"> hydrothermal synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20production" title=" hydrogen production"> hydrogen production</a> </p> <a href="https://publications.waset.org/abstracts/176791/iron-andor-titanium-containing-microporous-silico-alumino-phosphates-as-a-photocatalyst-for-hydrogen-production-by-water-splitting" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/176791.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">64</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">66</span> Modeling and Simulation of Organic Solar Cells Based on P3HT:PCBM using SCAPS 1-D (Influence of Defects and Temperature on the Performance of the Solar Cell)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Souhila%20Boukli%20Hacene">Souhila Boukli Hacene</a>, <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Kherbouche"> Djamila Kherbouche</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelhak%20Chikhaoui"> Abdelhak Chikhaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we elucidate theoretically the effect of defects and temperature on the performance of the organic bulk heterojunction solar cell (BHJ) P3HT: PCBM. We have studied the influence of their parameters on cell characteristics. For this purpose, we used the effective medium model and the solar cell simulator (SCAPS) to model the characteristics of the solar cell. We also explore the transport of charge carriers in the device. It was assumed that the mixture is lightly p-type doped and that the band gap contains acceptor defects near the HOMO level with a Gaussian distribution of energy states at 100 and 50 meV. We varied defects density between 1012-1017 cm-3, from 1016 cm-3, a total decrease of the photovoltaic characteristics due to the increase of the non-radiative recombination can be noticed. Then we studied the effect of variation of the electron and the hole capture cross-section on the cell’s performance, we noticed that the cell obtains a better efficiency of about 3.6% for an electron capture cross section ≤ 10-15 cm2 and a hole capture cross section ≤ 10-19 cm2. On the other hand, we also varied the temperature between 120K and 400K. We observed that the temperature of the solar cell induces a noticeable effect on its voltage. While the effect of temperature on the solar cell current is negligible. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=organic%20solar%20cell" title="organic solar cell">organic solar cell</a>, <a href="https://publications.waset.org/abstracts/search?q=P3HT%3APCBM" title=" P3HT:PCBM"> P3HT:PCBM</a>, <a href="https://publications.waset.org/abstracts/search?q=defects" title=" defects"> defects</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=SCAPS" title=" SCAPS"> SCAPS</a> </p> <a href="https://publications.waset.org/abstracts/164758/modeling-and-simulation-of-organic-solar-cells-based-on-p3htpcbm-using-scaps-1-d-influence-of-defects-and-temperature-on-the-performance-of-the-solar-cell" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164758.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">91</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">65</span> Photocatalytic Degradation of Toxic Phenols Using Zinc Oxide Doped Prussian Blue Nanocomposite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rachna">Rachna</a>, <a href="https://publications.waset.org/abstracts/search?q=Uma%20Shanker"> Uma Shanker</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aromatic phenols, being priority pollutants, are found in various industrial effluents and seeking the attention of environmentalists worldwide, owing to their life-threatening effects. In the present study, the coupling of zinc oxide with Prussian blue was achieved involving co-precipitation synthesis process using Azadirachta indica plant extract. The fabricated nanocatalyst was employed for the sunlight mediated photodegradation of various phenols (Phenol, 3-Aminophenol, and 2,4-Dinitrophenol). Doping of zinc oxide with Prussian blue caused an increase in the surface area to value 80.109 m²g⁻¹ and also enhanced the semiconducting tendency of the nanocomposite with band gap energy 1.101 eV. The experiment was performed at different parameters of phenols concentration, catalyst amount, pH, time, and exposure of sunlight. The obtained results showed a lower elimination of 2,4-DNP (93%) than 3-AP (97%) and phenol (95%) owing to their molecular weight and basicity differences. In comparison to the starting material (zinc oxide and Prussian blue), nanocomposite was more capable in degrading the phenols and lowered the t1/2 value of phenol (4.405 h), 3-AP (4.04 h) and 2,4-DNP (4.68 h) to a greater extent. Effect of different foreign anions was also studied to check nanocomposite’s liability under natural conditions. The extent of charge recombination being the most limiting factor in the photodegradation of pollutants was determined through the photoluminescence. Sunlight active ZnO@FeHCF nanocomposite was proven to exhibit good catalytic ability up to 10 cycles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title="nanocomposite">nanocomposite</a>, <a href="https://publications.waset.org/abstracts/search?q=phenols" title=" phenols"> phenols</a>, <a href="https://publications.waset.org/abstracts/search?q=photodegradation" title=" photodegradation"> photodegradation</a>, <a href="https://publications.waset.org/abstracts/search?q=sunlight" title=" sunlight"> sunlight</a>, <a href="https://publications.waset.org/abstracts/search?q=water" title=" water"> water</a> </p> <a href="https://publications.waset.org/abstracts/112289/photocatalytic-degradation-of-toxic-phenols-using-zinc-oxide-doped-prussian-blue-nanocomposite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/112289.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">126</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">64</span> Elaboration and Characterization of MEH-PPV/PCBM Composite Film Doped with TiO2 Nanoparticles for Photovoltaic Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wided%20Zerguine">Wided Zerguine</a>, <a href="https://publications.waset.org/abstracts/search?q=Farid%20Habelhames"> Farid Habelhames </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The performance of photovoltaic devices with a light absorber consisting of a single-type conjugated polymer is poor, due to a low photo-generation yield of charge carriers, strong radiative recombination’s and low mobility of charge carriers. Recently, it has been shown that ultra-fast photoinduced charge transfer can also occur between a conjugated polymer and a metal oxide semiconductor such as SnO2, TiO2, ZnO, Nb2O5, etc. This has led to the fabrication of photovoltaic devices based on composites of oxide semiconductor nanoparticles embedded in a conjugated polymer matrix. In this work, Poly [2-methoxy-5-(20-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV), (6,6)-phenyl-C61-butyric acid methyl ester (PCBM) and titanium dioxide (TiO2) nanoparticles (n-type) were dissolved, mixed and deposited by physical methods (spin-coating) on indium tin-oxide (ITO) substrate. The incorporation of the titanium dioxide nanoparticles changed the morphology and increased the roughness of polymers film (MEH-PPV/PCBM), and the photocurrent density of the composite (MEH-PPV/PCBM +n-TiO2) was higher than that of single MEHPPV/ PCBM film. The study showed that the presence of n-TiO2 particles in the polymeric film improves the photoelectrochemical properties of MEH-PPV/PCBM composite. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photocurrent%20density" title="photocurrent density">photocurrent density</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20nanostructures" title=" organic nanostructures"> organic nanostructures</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20coating" title=" hybrid coating"> hybrid coating</a>, <a href="https://publications.waset.org/abstracts/search?q=conducting%20polymer" title=" conducting polymer"> conducting polymer</a>, <a href="https://publications.waset.org/abstracts/search?q=titanium%20dioxide" title=" titanium dioxide"> titanium dioxide</a> </p> <a href="https://publications.waset.org/abstracts/35376/elaboration-and-characterization-of-meh-ppvpcbm-composite-film-doped-with-tio2-nanoparticles-for-photovoltaic-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35376.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">328</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">63</span> Genome-Wide Functional Analysis of Phosphatase in Cryptococcus neoformans</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jae-Hyung%20Jin">Jae-Hyung Jin</a>, <a href="https://publications.waset.org/abstracts/search?q=Kyung-Tae%20Lee"> Kyung-Tae Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Yee-Seul%20So"> Yee-Seul So</a>, <a href="https://publications.waset.org/abstracts/search?q=Eunji%20Jeong"> Eunji Jeong</a>, <a href="https://publications.waset.org/abstracts/search?q=Yeonseon%20Lee"> Yeonseon Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Dongpil%20Lee"> Dongpil Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong-Gi%20Lee"> Dong-Gi Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Yong-Sun%20Bahn"> Yong-Sun Bahn</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cryptococcus neoformans causes cryptococcal meningoencephalitis mainly in immunocompromised patients as well as immunocompetent people. But therapeutic options are limited to treat cryptococcosis. Some signaling pathways including cyclic AMP pathway, MAPK pathway, and calcineurin pathway play a central role in the regulation of the growth, differentiation, and virulence of C. neoformans. To understand signaling networks regulating the virulence of C. neoformans, we selected the 114 putative phosphatase genes, one of the major components of signaling networks, in the genome of C. neoformans. We identified putative phosphatases based on annotation in C. neoformans var. grubii genome database provided by the Broad Institute and National Center for Biotechnology Information (NCBI) and performed a BLAST search of phosphatases of Saccharomyces cerevisiae, Aspergillus nidulans, Candida albicans and Fusarium graminearum to Cryptococcus neoformans. We classified putative phosphatases into 14 groups based on InterPro phosphatase domain annotation. Here, we constructed 170 signature-tagged gene-deletion strains through homologous recombination methods for 91 putative phosphatases. We examined their phenotypic traits under 30 different in vitro conditions, including growth, differentiation, stress response, antifungal resistance and virulence-factor production. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=human%20fungal%20pathogen" title="human fungal pathogen">human fungal pathogen</a>, <a href="https://publications.waset.org/abstracts/search?q=phosphatase" title=" phosphatase"> phosphatase</a>, <a href="https://publications.waset.org/abstracts/search?q=deletion%20library" title=" deletion library"> deletion library</a>, <a href="https://publications.waset.org/abstracts/search?q=functional%20genomics" title=" functional genomics"> functional genomics</a> </p> <a href="https://publications.waset.org/abstracts/63313/genome-wide-functional-analysis-of-phosphatase-in-cryptococcus-neoformans" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63313.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">364</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">62</span> A Novel Chicken W Chromosome Specific Tandem Repeat</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alsu%20F.%20Saifitdinova">Alsu F. Saifitdinova</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexey%20S.%20Komissarov"> Alexey S. Komissarov</a>, <a href="https://publications.waset.org/abstracts/search?q=Svetlana%20A.%20Galkina"> Svetlana A. Galkina</a>, <a href="https://publications.waset.org/abstracts/search?q=Elena%20I.%20Koshel"> Elena I. Koshel</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20M.%20Kulak"> Maria M. Kulak</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephen%20J.%20O%27Brien"> Stephen J. O'Brien</a>, <a href="https://publications.waset.org/abstracts/search?q=Elena%20R.%20Gaginskaya"> Elena R. Gaginskaya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The mystery of sex determination is one of the most ancient and still not solved until the end so far. In many species, sex determination is genetic and often accompanied by the presence of dimorphic sex chromosomes in the karyotype. Genomic sequencing gave the information about the gene content of sex chromosomes which allowed to reveal their origin from ordinary autosomes and to trace their evolutionary history. Female-specific W chromosome in birds as well as mammalian male-specific Y chromosome is characterized by the degeneration of gene content and the accumulation of repetitive DNA. Tandem repeats complicate the analysis of genomic data. Despite the best efforts chicken W chromosome assembly includes only 1.2 Mb from expected 55 Mb. Supplementing the information on the sex chromosome composition not only helps to complete the assembly of genomes but also moves us in the direction of understanding of the sex-determination systems evolution. A whole-genome survey to the assembly Gallus_gallus WASHUC 2.60 was applied for repeats search in assembled genome and performed search and assembly of high copy number repeats in unassembled reads of SRR867748 short reads datasets. For cytogenetic analysis conventional methods of fluorescent in situ hybridization was used for previously cloned W specific satellites and specifically designed directly labeled synthetic oligonucleotide DNA probe was used for bioinformatically identified repetitive sequence. Hybridization was performed with mitotic chicken chromosomes and manually isolated giant meiotic lampbrush chromosomes from growing oocytes. A novel chicken W specific satellite (GGAAA)n which is not co-localizes with any previously described classes of W specific repeats was identified and mapped with high resolution. In the composition of autosomes this repeat units was found as a part of upstream regions of gonad specific protein coding sequences. These findings may contribute to the understanding of the role of tandem repeats in sex specific differentiation regulation in birds and sex chromosome evolution. This work was supported by the postdoctoral fellowships from St. Petersburg State University (#1.50.1623.2013 and #1.50.1043.2014), the grant for Leading Scientific Schools (#3553.2014.4) and the grant from Russian foundation for basic researches (#15-04-05684). The equipment and software of Research Resource Center “Chromas” and Theodosius Dobzhansky Center for Genome Bioinformatics of Saint Petersburg State University were used. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=birds" title="birds">birds</a>, <a href="https://publications.waset.org/abstracts/search?q=lampbrush%20chromosomes" title=" lampbrush chromosomes"> lampbrush chromosomes</a>, <a href="https://publications.waset.org/abstracts/search?q=sex%20chromosomes" title=" sex chromosomes"> sex chromosomes</a>, <a href="https://publications.waset.org/abstracts/search?q=tandem%20repeats" title=" tandem repeats"> tandem repeats</a> </p> <a href="https://publications.waset.org/abstracts/34218/a-novel-chicken-w-chromosome-specific-tandem-repeat" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34218.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">389</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">61</span> Extraction of Amorphous SiO₂ From Equisetnm Arvense Plant for Synthesis of SiO₂/Zeolitic Imidazolate Framework-8 Nanocomposite and Its Photocatalytic Activity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Babak%20Azari">Babak Azari</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Pourahmad"> Afshin Pourahmad</a>, <a href="https://publications.waset.org/abstracts/search?q=Babak%20Sadeghi"> Babak Sadeghi</a>, <a href="https://publications.waset.org/abstracts/search?q=Masuod%20Mokhtari"> Masuod Mokhtari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, Equisetnm arvense plant extract was used for preparing amorphous SiO₂. For preparing of SiO₂/zeolitic imidazolate framework-8 (ZIF-8) nanocomposite by solvothermal method, the synthesized SiO₂ was added to the synthesis mixture ZIF-8. The nanocomposite was characterized using a range of techniques. The photocatalytic activity of SiO₂/ZIF-8 was investigated systematically by degrading crystal violet as a cationic dye under Ultraviolet light irradiation. Among synthesized samples (SiO₂, ZIF-8 and SiO₂/ZIF-8), the SiO₂/ZIF-8 exhibited the highest photocatalytic activity and improved stability compared to pure SiO₂ and ZIF-8. As evidenced by Scanning Electron Microscopy and Transmission electron microscopy images, ZIF-8 particles without aggregation are located over SiO₂. The SiO₂ not only provides structured support for ZIF-8 but also prevents the aggregation of ZIF-8 Metal-organic framework in comparison to the isolated ZIF-8. The superior activity of this photocatalyst was attributed to the synergistic effects from SiO₂ owing to (I) an electron acceptor (from ZIF-8) and an electron donor (to O₂ molecules), (II) preventing recombination of electron-hole in ZIF-8, and (III) maximum interfacial contact ZIF-8 with the SiO₂ surface without aggregation or prevent the accumulation of ZIF-8. The results demonstrate that holes (h+) and •O₂- are primary reactive species involved in the photocatalytic oxidation process. Moreover, the SiO₂/ZIF-8 photocatalyst did not show any obvious loss of photocatalytic activity during five-cycle tests, which indicates that the heterostructured photocatalyst was highly stable and could be used repeatedly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nano" title="nano">nano</a>, <a href="https://publications.waset.org/abstracts/search?q=zeolit" title=" zeolit"> zeolit</a>, <a href="https://publications.waset.org/abstracts/search?q=potocatalist" title=" potocatalist"> potocatalist</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title=" nanocomposite"> nanocomposite</a> </p> <a href="https://publications.waset.org/abstracts/169098/extraction-of-amorphous-sio2-from-equisetnm-arvense-plant-for-synthesis-of-sio2zeolitic-imidazolate-framework-8-nanocomposite-and-its-photocatalytic-activity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169098.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">80</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">60</span> Thermal Conductivity and Optical Absorption of GaAsPN/GaP for Tandem Solar Cells: Effect of Rapid Thermal Annealing </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Ilahi">S. Ilahi</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Almosni"> S. Almosni</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Chouchene"> F. Chouchene</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Perrin"> M. Perrin</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Zelazna"> K. Zelazna</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Yacoubi"> N. Yacoubi</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Kudraweic"> R. Kudraweic</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Rale"> P. Rale</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Lombez"> L. Lombez</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20F.%20%20Guillemoles"> J. F. Guillemoles</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20Durand"> O. Durand</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Cornet"> C. Cornet</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Great efforts have been dedicated to obtain high quality of GaAsPN. The properties of GaAsPN have played a great part on the development of solar cells devices based in Si substrate. The incorporation of N in GaAsPN that having a band gap around of 1.7 eV is of special interest in view of growing in Si substrate. In fact, post-growth and rapid thermal annealing (RTA) could be an effective way to improve the quality of the layer. Then, the inﬂuence of growth conditions and post-growth annealing on optical and thermal parameters is considered. We have used Photothermal deflection spectroscopy PDS to investigate the impact of rapid thermal annealing on thermal and optical properties of GaAsPN. In fact, the principle of the PDS consists to illuminate the sample by a modulated monochromatic light beam. Then, the absorbed energy is converted into heat through the nonradiative recombination process. The generated thermal wave propagates into the sample and surrounding media creating a refractive-index gradient giving rise to the deflection of a laser probe beam skimming the sample surface. The incident light is assumed to be uniform, and only the sample absorbs the light. In conclusion, the results are promising revealing an improvement in absorption coefficient and thermal conductivity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=GaAsPN%20absorber" title="GaAsPN absorber">GaAsPN absorber</a>, <a href="https://publications.waset.org/abstracts/search?q=photothermal%20defelction%20technique%20PDS" title=" photothermal defelction technique PDS"> photothermal defelction technique PDS</a>, <a href="https://publications.waset.org/abstracts/search?q=photonics%20on%20silicon" title=" photonics on silicon"> photonics on silicon</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20conductivity" title=" thermal conductivity"> thermal conductivity</a> </p> <a href="https://publications.waset.org/abstracts/62722/thermal-conductivity-and-optical-absorption-of-gaaspngap-for-tandem-solar-cells-effect-of-rapid-thermal-annealing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62722.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">354</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">59</span> The Role of Glutamine-Rich Region of Candida Albicans Tec1p in Mediating Morphological Transition and Invasive Growth</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=W.%20Abu%20Rayyan">W. Abu Rayyan</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Singh"> A. Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20Al-Jaafreh"> A. M. Al-Jaafreh</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Abu%20Dayyih"> W. Abu Dayyih</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Bustami"> M. Bustami</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Salem"> S. Salem</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Seder"> N. Seder</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Schr%C3%B6ppel"> K. Schröppel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hyphal growth and the transcriptional regulation to the host environment are key issues during the pathogenesis of C. albicans. Tec1p is the C. albicans homolog of a TEA transcription factor family, which share a conserved DNA-binding TEA domain in their N-terminal. In order to define a structure-function relationship of the C. albicans Tec1p protein, we constructed several mutations on the N terminal, C terminal or in the TEA binding domain itself by homologous recombination technology. The modifications in the open reading frame of TEC1 were tested for reconstitution of the morphogenetic development of the tec1/tec1 mutant strain CaAS12. Mutation in the TEA consensus sequence did not confer transition to hyphae whereas the reconstitution of the full-length Tec1p has reconstituted hyphal development. A deletion in one of glutamine-rich regions either in the Tec1p N-terminal or the C-terminal in regions of 53-212 or 637–744 aa, respectively, did not restore morphological development in mutant CaAS12 strain. Whereas, the reconstitution with Tec1p mutants other than the glutamate-rich region has restored the morphogenetic switch. Additionally, the deletion of the glutamine-rich region has attenuated the invasive growth and the heat shock resistance of C. albicans. In conclusion, we show that a glutamine-rich region of Tec1p is essential for the hyphal development and mediating adaptation to the host environment of C. albicans. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Candida%20albicans" title="Candida albicans">Candida albicans</a>, <a href="https://publications.waset.org/abstracts/search?q=morphogenetic%20development" title=" morphogenetic development"> morphogenetic development</a>, <a href="https://publications.waset.org/abstracts/search?q=TEA%20domain" title=" TEA domain"> TEA domain</a>, <a href="https://publications.waset.org/abstracts/search?q=hyphal%20formation" title=" hyphal formation"> hyphal formation</a>, <a href="https://publications.waset.org/abstracts/search?q=TEC1" title=" TEC1"> TEC1</a> </p> <a href="https://publications.waset.org/abstracts/100003/the-role-of-glutamine-rich-region-of-candida-albicans-tec1p-in-mediating-morphological-transition-and-invasive-growth" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/100003.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">145</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">58</span> Effect of Vitrification on Embryos Euploidy Obtained from Thawed Oocytes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Natalia%20Buderatskaya">Natalia Buderatskaya</a>, <a href="https://publications.waset.org/abstracts/search?q=Igor%20Ilyin"> Igor Ilyin</a>, <a href="https://publications.waset.org/abstracts/search?q=Julia%20Gontar"> Julia Gontar</a>, <a href="https://publications.waset.org/abstracts/search?q=Sergey%20Lavrynenko"> Sergey Lavrynenko</a>, <a href="https://publications.waset.org/abstracts/search?q=Olga%20Parnitskaya"> Olga Parnitskaya</a>, <a href="https://publications.waset.org/abstracts/search?q=Ekaterina%20Ilyina"> Ekaterina Ilyina</a>, <a href="https://publications.waset.org/abstracts/search?q=Eduard%20Kapustin"> Eduard Kapustin</a>, <a href="https://publications.waset.org/abstracts/search?q=Yana%20Lakhno"> Yana Lakhno</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: It is known that cryopreservation of oocytes has peculiar features due to the complex structure of the oocyte. One of the most important features is that mature oocytes contain meiotic division spindle which is very sensitive even to the slightest variation in temperature. Thus, the main objective of this study is to analyse the resulting euploid embryos obtained from thawed oocytes in comparison with the data of preimplantation genetic screening (PGS) in fresh embryo cycles. Material and Methods: The study was conducted at 'Medical Centre IGR' from January to July 2016. Data were analysed for 908 donor oocytes obtained in 67 cycles of assisted reproductive technologies (ART), of which 693 oocytes were used in the 51 'fresh' cycles (group A), and 215 oocytes - 16 ART programs with vitrification female gametes (group B). The average age of donors in the groups match 27.3±2.9 and 27.8±6.6 years. Stimulation of superovulation was conducted the standard way. Vitrification was performed in 1-2 hours after transvaginal puncture and thawing of oocytes were carried out in accordance with the standard protocol of Cryotech (Japan). Manipulation ICSI was performed 4-5 hours after transvaginal follicle puncture for fresh oocytes, or after defrosting - for vitrified female gametes. For the PGS, an embryonic biopsy was done on the third or on the fifth day after fertilization. Diagnostic procedures were performed using fluorescence in situ hybridization with the study of such chromosomes as 13, 16, 18, 21, 22, X, Y. Only morphologically quality blastocysts were used for the transfer, the estimation of which corresponded to the Gardner criteria. The statistical hypotheses were done using the criteria t, x^2 at a significance levels p<0.05, p<0.01, p<0.001. Results: The mean number of mature oocytes per cycle in group A was 13.58±6.65 and in group B - 13.44±6.68 oocytes for patient. The survival of oocytes after thawing totaled 95.3% (n=205), which indicates a highly effective quality of performed vitrification. The proportion of zygotes in the group A corresponded to 91.1%(n=631), in the group B – 80.5%(n=165), which shows statistically significant difference between the groups (p<0.001) and explained by non-viable oocytes elimination after vitrification. This is confirmed by the fact that on the fifth day of embryos development a statistically significant difference in the number of blastocysts was absent (p>0.05), and constituted respectively 61.6%(n=389) and 63.0%(n=104) in the groups. For the PGS performing 250 embryos analyzed in the group A and 72 embryos - in the group B. The results showed that euploidy in the studied chromosomes were 40.0%(n=100) embryos in the group A and 41.7% (n=30) - in the group B, which shows no statistical significant difference (p>0.05). The indicators of clinical pregnancies in the groups amounted to 64.7% (22 pregnancies per 34 embryo transfers) and 61.5% (8 pregnancies per 13 embryo transfers) respectively, and also had no significant difference between the groups (p>0.05). Conclusions: The results showed that the vitrification does not affect the resulting euploid embryos in assisted reproductive technologies and are not reflected in their morphological characteristics in ART programs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=euploid%20embryos" title="euploid embryos">euploid embryos</a>, <a href="https://publications.waset.org/abstracts/search?q=preimplantation%20genetic%20screening" title=" preimplantation genetic screening"> preimplantation genetic screening</a>, <a href="https://publications.waset.org/abstracts/search?q=thawing%20oocytes" title=" thawing oocytes"> thawing oocytes</a>, <a href="https://publications.waset.org/abstracts/search?q=vitrification" title=" vitrification"> vitrification</a> </p> <a href="https://publications.waset.org/abstracts/57504/effect-of-vitrification-on-embryos-euploidy-obtained-from-thawed-oocytes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57504.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">334</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">57</span> Influence of Boron and Germanium Doping on Physical-Mechanical Properties of Monocrystalline Silicon </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ia%20Kurashvili">Ia Kurashvili</a>, <a href="https://publications.waset.org/abstracts/search?q=Giorgi%20Darsavelidze"> Giorgi Darsavelidze</a>, <a href="https://publications.waset.org/abstracts/search?q=Giorgi%20%20Chubinidze"> Giorgi Chubinidze</a>, <a href="https://publications.waset.org/abstracts/search?q=Marina%20Kadaria"> Marina Kadaria</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Boron-doped Czochralski (CZ) silicon of p-type, widely used in the photovoltaic industry is suffering from the light-induced-degradation (LID) of bulk electrophysical characteristics. This is caused by specific metastable B-O defects, which are characterized by strong recombination activity. In this regard, it is actual to suppress B-O defects in CZ silicon. One of the methods is doping of silicon by different isovalent elements (Ge, C, Sn). The present work deals with the investigations of the influence of germanium doping on the internal friction and shear modulus amplitude dependences in the temperature interval of 600-800⁰C and 0.5-5 Hz frequency range in boron-containing monocrystalline silicon. Experimental specimens were grown by Czochralski method (CZ) in [111] direction. Four different specimens were investigated: Si+0,5at%Ge:B (5.1015cm-3), Si+0,5at%Ge:B (1.1019cm-3), Si+2at%Ge:B (5.1015cm-3) and Si+2at%Ge:B (1.1019cm-3). Increasing tendency of dislocation density and inhomogeneous distribution in silicon crystals with high content of boron and germanium were revealed by metallographic studies on the optical microscope of NMM-80RF/TRF. Weak increase of current carriers-holes concentration and slight decrease of their mobility were observed by Van der Pauw method on Ecopia HMS-3000 device. Non-monotonous changes of dislocation origin defects mobility and microplastic deformation characteristics influenced by measuring temperatures and boron and germanium concentrations were revealed. Possible mechanisms of changes of mechanical characteristics in Si-Ge experimental specimens were discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dislocation" title="dislocation">dislocation</a>, <a href="https://publications.waset.org/abstracts/search?q=internal%20friction" title=" internal friction"> internal friction</a>, <a href="https://publications.waset.org/abstracts/search?q=microplastic%20deformation" title=" microplastic deformation"> microplastic deformation</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20modulus" title=" shear modulus"> shear modulus</a> </p> <a href="https://publications.waset.org/abstracts/76280/influence-of-boron-and-germanium-doping-on-physical-mechanical-properties-of-monocrystalline-silicon" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76280.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">238</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">56</span> Modification of Electrical and Switching Characteristics of a Non Punch-Through Insulated Gate Bipolar Transistor by Gamma Irradiation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hani%20Baek">Hani Baek</a>, <a href="https://publications.waset.org/abstracts/search?q=Gwang%20Min%20Sun"> Gwang Min Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Chansun%20Shin"> Chansun Shin</a>, <a href="https://publications.waset.org/abstracts/search?q=Sung%20Ho%20Ahn"> Sung Ho Ahn</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fast neutron irradiation using nuclear reactors is an effective method to improve switching loss and short circuit durability of power semiconductor (insulated gate bipolar transistors (IGBT) and insulated gate transistors (IGT), etc.). However, not only fast neutrons but also thermal neutrons, epithermal neutrons and gamma exist in the nuclear reactor. And the electrical properties of the IGBT may be deteriorated by the irradiation of gamma. Gamma irradiation damages are known to be caused by Total Ionizing Dose (TID) effect and Single Event Effect (SEE), Displacement Damage. Especially, the TID effect deteriorated the electrical properties such as leakage current and threshold voltage of a power semiconductor. This work can confirm the effect of the gamma irradiation on the electrical properties of 600 V NPT-IGBT. Irradiation of gamma forms lattice defects in the gate oxide and Si-SiO<sub>2</sub> interface of the IGBT. It was confirmed that this lattice defect acts on the center of the trap and affects the threshold voltage, thereby negatively shifted the threshold voltage according to TID. In addition to the change in the carrier mobility, the conductivity modulation decreases in the n-drift region, indicating a negative influence that the forward voltage drop decreases. The turn-off delay time of the device before irradiation was 212 ns. Those of 2.5, 10, 30, 70 and 100 kRad(Si) were 225, 258, 311, 328, and 350 ns, respectively. The gamma irradiation increased the turn-off delay time of the IGBT by approximately 65%, and the switching characteristics deteriorated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=NPT-IGBT" title="NPT-IGBT">NPT-IGBT</a>, <a href="https://publications.waset.org/abstracts/search?q=gamma%20irradiation" title=" gamma irradiation"> gamma irradiation</a>, <a href="https://publications.waset.org/abstracts/search?q=switching" title=" switching"> switching</a>, <a href="https://publications.waset.org/abstracts/search?q=turn-off%20delay%20time" title=" turn-off delay time"> turn-off delay time</a>, <a href="https://publications.waset.org/abstracts/search?q=recombination" title=" recombination"> recombination</a>, <a href="https://publications.waset.org/abstracts/search?q=trap%20center" title=" trap center"> trap center</a> </p> <a href="https://publications.waset.org/abstracts/93282/modification-of-electrical-and-switching-characteristics-of-a-non-punch-through-insulated-gate-bipolar-transistor-by-gamma-irradiation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93282.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">155</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">55</span> Evaluation of Adaptive Fitness of Indian Teak (Tectona grandis L. F.) Metapopulation through Inter Simple Sequence Repeat Markers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vivek%20Vaishnav">Vivek Vaishnav</a>, <a href="https://publications.waset.org/abstracts/search?q=Shamim%20Akhtar%20Ansari"> Shamim Akhtar Ansari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Teak (Tectona grandis L.f.) belonging to plant family Lamiaceae and the most commercialized timber species is endemic to South-Asia. The adaptive fitness of the species metapopulation was evaluated through its genetic differentiation and assessing the influence of geo-climatic conditions. 290 genotypes were sampled from 29 locations of its natural distribution and the genetic data was incorporated with geo-climatic parameters. Through Bayesian approach based analysis of 43 highly polymorphic ISSR markers, six homogeneous clusters (0.8% genetic variability) were identified. The six clusters were found with the various regimes of the temperature range, i.e., I - 9.10±1.35⁰C, II -6.35±0.21⁰C, III -12.21±0.43⁰C, IV - 10.8±1.06⁰C, V - 11.67±3.04⁰C, and VI - 12.35±0.21⁰C. The population had a very high percentage of LD (21.48%) among the amplified loci possibly due to experiencing restricted gene flow as well as co-adaptation and association of distant/diverse loci/alleles as a result of the stabilized climatic conditions and countless cycles of historical recombination events on a large geological timescale. The same possibly accounts for the narrow distribution of teak as a climax species in the tropical deciduous forests of the country. The regions of strong LD in teak genome significantly associated with climatic parameters also reflect that the species is tolerant to the wide regimes of the temperature range and may possibly withstand global warming and climate change in the coming millennium. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bayesian%20analysis" title="Bayesian analysis">Bayesian analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=inter%20simple%20sequence%20repeat" title=" inter simple sequence repeat"> inter simple sequence repeat</a>, <a href="https://publications.waset.org/abstracts/search?q=linkage%20disequilibrium" title=" linkage disequilibrium"> linkage disequilibrium</a>, <a href="https://publications.waset.org/abstracts/search?q=marker-geoclimatic%20association" title=" marker-geoclimatic association"> marker-geoclimatic association</a> </p> <a href="https://publications.waset.org/abstracts/87648/evaluation-of-adaptive-fitness-of-indian-teak-tectona-grandis-l-f-metapopulation-through-inter-simple-sequence-repeat-markers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87648.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">263</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">54</span> Optimal Concentration of Fluorescent Nanodiamonds in Aqueous Media for Bioimaging and Thermometry Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Francisco%20Pedroza-Montero">Francisco Pedroza-Montero</a>, <a href="https://publications.waset.org/abstracts/search?q=Jes%C3%BAs%20Na%C3%ADn%20Pedroza-Montero"> Jesús Naín Pedroza-Montero</a>, <a href="https://publications.waset.org/abstracts/search?q=Diego%20Soto-Puebla"> Diego Soto-Puebla</a>, <a href="https://publications.waset.org/abstracts/search?q=Osiris%20Alvarez-Bajo"> Osiris Alvarez-Bajo</a>, <a href="https://publications.waset.org/abstracts/search?q=Beatriz%20Castaneda"> Beatriz Castaneda</a>, <a href="https://publications.waset.org/abstracts/search?q=Sof%C3%ADa%20Navarro-Espinoza"> Sofía Navarro-Espinoza</a>, <a href="https://publications.waset.org/abstracts/search?q=Mart%C3%ADn%20Pedroza-Montero"> Martín Pedroza-Montero</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nanodiamonds have been widely studied for their physical properties, including chemical inertness, biocompatibility, optical transparency from the ultraviolet to the infrared region, high thermal conductivity, and mechanical strength. In this work, we studied how the fluorescence spectrum of nanodiamonds quenches concerning the concentration in aqueous solutions systematically ranging from 0.1 to 10 mg/mL. Our results demonstrated a non-linear fluorescence quenching as the concentration increases for both of the NV zero-phonon lines; the 5 mg/mL concentration shows the maximum fluorescence emission. Furthermore, this behaviour is theoretically explained as an electronic recombination process that modulates the intensity in the NV centres. Finally, to gain more insight, the FRET methodology is used to determine the fluorescence efficiency in terms of the fluorophores' separation distance. Thus, the concentration level is simulated as follows, a small distance between nanodiamonds would be considered a highly concentrated system, whereas a large distance would mean a low concentrated one. Although the 5 mg/mL concentration shows the maximum intensity, our main interest is focused on the concentration of 0.5 mg/mL, which our studies demonstrate the optimal human cell viability (99%). In this respect, this concentration has the feature of being as biocompatible as water giving the possibility to internalize it in cells without harming the living media. To this end, not only can we track nanodiamonds on the surface or inside the cell with excellent precision due to their fluorescent intensity, but also, we can perform thermometry tests transforming a fluorescence contrast image into a temperature contrast image. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanodiamonds" title="nanodiamonds">nanodiamonds</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescence%20spectroscopy" title=" fluorescence spectroscopy"> fluorescence spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=concentration" title=" concentration"> concentration</a>, <a href="https://publications.waset.org/abstracts/search?q=bioimaging" title=" bioimaging"> bioimaging</a>, <a href="https://publications.waset.org/abstracts/search?q=thermometry" title=" thermometry"> thermometry</a> </p> <a href="https://publications.waset.org/abstracts/142223/optimal-concentration-of-fluorescent-nanodiamonds-in-aqueous-media-for-bioimaging-and-thermometry-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/142223.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">405</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">53</span> Zeolite Supported Iron-Sensitized TIO₂ for Tetracycline Photocatalytic ‎Degradation under Visible Light: A Comparison between Doping and Ion ‎Exchange ‎</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ghadeer%20Jalloul">Ghadeer Jalloul</a>, <a href="https://publications.waset.org/abstracts/search?q=Nour%20Hijazi"> Nour Hijazi</a>, <a href="https://publications.waset.org/abstracts/search?q=Cassia%20Boyadjian"> Cassia Boyadjian</a>, <a href="https://publications.waset.org/abstracts/search?q=Hussein%20Awala"> Hussein Awala</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20N.%20Ahmad"> Mohammad N. Ahmad</a>, <a href="https://publications.waset.org/abstracts/search?q=%E2%80%8EAhmad%20Albadarin"> ‎Ahmad Albadarin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, we applied Fe-sensitized TiO₂ supported over embryonic Beta zeolite (BEA) zeolite ‎for the photocatalytic degradation of Tetracycline (TC) antibiotic under visible light. Four different ‎samples having 20, 40, 60, and 100% w/w as a ratio of TiO₂/BEA were prepared. The ‎immobilization of solgel TiO₂ (33 m²/g) over BEA (390 m²/g) increased its surface area to (227 ‎m²/g) and enhanced its adsorption capacity from 8% to 19%. To expand the activity of TiO₂ ‎photocatalyst towards the visible light region (λ>380 nm), we explored two different metal ‎sensitization techniques with Iron ions (Fe³⁺). In the ion-exchange method, the substitutional cations ‎in the zeolite in TiO₂/BEA were exchanged with (Fe³⁺) in an aqueous solution of FeCl₃. In the ‎doping technique, solgel TiO₂ was doped with (Fe³⁺) from FeCl₃ precursor during its synthesis and ‎before its immobilization over BEA. (Fe-TiO₂/BEA) catalysts were characterized using SEM, XRD, ‎BET, UV-VIS DRS, and FTIR. After testing the performance of the various ion-exchanged catalysts ‎under blue and white lights, only (Fe-TiO₂/BEA 60%) showed better activity as compared to pure ‎TiO₂ under white light with 100 ppm initial catalyst concentration and 20 ppm TC concentration. As ‎compared to ion-exchanged (Fe-TiO₂/BEA), doped (Fe-TiO₂/BEA) resulted in higher photocatalytic ‎efficiencies under blue and white lights. The 3%-Fe-doped TiO₂/BEA removed 92% of TC ‎compared to 54% by TiO₂ under white light. The catalysts were also tested under real solar ‎irradiations. This improvement in the photocatalytic performance of TiO₂ was due to its higher ‎adsorption capacity due to BEA support combined with the presence of Iron ions that enhance the ‎visible light absorption and minimize the recombination effect by the charge carriers. ‎ <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tetracycline" title="Tetracycline">Tetracycline</a>, <a href="https://publications.waset.org/abstracts/search?q=photocatalytic%20degradation" title=" photocatalytic degradation"> photocatalytic degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=immobilized%20TiO%E2%82%82" title=" immobilized TiO₂"> immobilized TiO₂</a>, <a href="https://publications.waset.org/abstracts/search?q=zeolite" title=" zeolite"> zeolite</a>, <a href="https://publications.waset.org/abstracts/search?q=iron-doped%20TiO%E2%82%82" title=" iron-doped TiO₂"> iron-doped TiO₂</a>, <a href="https://publications.waset.org/abstracts/search?q=ion-exchange" title=" ion-exchange"> ion-exchange</a> </p> <a href="https://publications.waset.org/abstracts/171966/zeolite-supported-iron-sensitized-tio2-for-tetracycline-photocatalytic-degradation-under-visible-light-a-comparison-between-doping-and-ion-exchange" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/171966.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">106</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">52</span> Doped and Co-doped ZnO Based Nanoparticles and their Photocatalytic and Gas Sensing Property</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Neha%20Verma">Neha Verma</a>, <a href="https://publications.waset.org/abstracts/search?q=Manik%20Rakhra"> Manik Rakhra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Statement of the Problem: Nowadays, a tremendous increase in population and advanced industrialization augment the problems related to air and water pollutions. Growing industries promoting environmental danger, which is an alarming threat to the ecosystem. For safeguard, the environment, detection of perilous gases and release of colored wastewater is required for eutrophication pollution. Researchers around the globe are trying their best efforts to save the environment. For this remediation advanced oxidation process is used for potential applications. ZnO is an important semiconductor photocatalyst with high photocatalytic and gas sensing activities. For efficient photocatalytic and gas sensing properties, it is necessary to prepare a doped/co-doped ZnO compound to decrease the electron-hole recombination rates. However, lanthanide doped and co-doped metal oxide is seldom studied for photocatalytic and gas sensing applications. The purpose of this study is to describe the best photocatalyst for the photodegradation of dyes and gas sensing properties. Methodology & Theoretical Orientation: Economical framework has to be used for the synthesis of ZnO. In the depth literature survey, a simple combustion method is utilized for gas sensing and photocatalytic activities. Findings: Rare earth doped and co-doped ZnO nanoparticles were the best photocatalysts for photodegradation of organic dyes and different gas sensing applications by varying various factors such as pH, aging time, and different concentrations of doping and codoping metals in ZnO. Complete degradation of dye was observed only in min. Gas sensing nanodevice showed a better response and quick recovery time for doped/co-doped ZnO. Conclusion & Significance: In order to prevent air and water pollution, well crystalline ZnO nanoparticles were synthesized by rapid and economic method, which is used as photocatalyst for photodegradation of organic dyes and gas sensing applications to sense the release of hazardous gases from the environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ZnO" title="ZnO">ZnO</a>, <a href="https://publications.waset.org/abstracts/search?q=photocatalyst" title=" photocatalyst"> photocatalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=photodegradation%20of%20dye" title=" photodegradation of dye"> photodegradation of dye</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20sensor" title=" gas sensor"> gas sensor</a> </p> <a href="https://publications.waset.org/abstracts/142117/doped-and-co-doped-zno-based-nanoparticles-and-their-photocatalytic-and-gas-sensing-property" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/142117.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">155</span> </span> </div> </div> <ul class="pagination"> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=meiotic%20recombination&page=2" rel="prev">&lsaquo;</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=meiotic%20recombination&page=1">1</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=meiotic%20recombination&page=2">2</a></li> <li class="page-item active"><span class="page-link">3</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=meiotic%20recombination&page=4">4</a></li> <li class="page-item"><a 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