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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> 44</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: DCLL blanket</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">44</span> Functional Plasma-Spray Ceramic Coatings for Corrosion Protection of RAFM Steels in Fusion Energy Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chen%20Jiang">Chen Jiang</a>, <a href="https://publications.waset.org/abstracts/search?q=Eric%20Jordan"> Eric Jordan</a>, <a href="https://publications.waset.org/abstracts/search?q=Maurice%20Gell"> Maurice Gell</a>, <a href="https://publications.waset.org/abstracts/search?q=Balakrishnan%20Nair"> Balakrishnan Nair</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nuclear fusion, one of the most promising options for reliably generating large amounts of carbon-free energy in the future, has seen a plethora of ground-breaking technological advances in recent years. An efficient and durable “breeding blanket”, needed to ensure a reactor’s self-sufficiency by maintaining the optimal coolant temperature as well as by minimizing radiation dosage behind the blanket, still remains a technological challenge for the various reactor designs for commercial fusion power plants. A relatively new dual-coolant lead-lithium (DCLL) breeder design has exhibited great potential for high-temperature (>700oC), high-thermal-efficiency (>40%) fusion reactor operation. However, the structural material, namely reduced activation ferritic-martensitic (RAFM) steel, is not chemically stable in contact with molten Pb-17%Li coolant. Thus, to utilize this new promising reactor design, the demand for effective corrosion-resistant coatings on RAFM steels represents a pressing need. Solution Spray Technologies LLC (SST) is developing a double-layer ceramic coating design to address the corrosion protection of RAFM steels, using a novel solution and solution/suspension plasma spray technology through a US Department of Energy-funded project. Plasma spray is a coating deposition method widely used in many energy applications. Novel derivatives of the conventional powder plasma spray process, known as the solution-precursor and solution/suspension-hybrid plasma spray process, are powerful methods to fabricate thin, dense ceramic coatings with complex compositions necessary for the corrosion protection in DCLL breeders. These processes can be used to produce ultra-fine molten splats and to allow fine adjustment of coating chemistry. Thin, dense ceramic coatings with chosen chemistry for superior chemical stability in molten Pb-Li, low activation properties, and good radiation tolerance, is ideal for corrosion-protection of RAFM steels. A key challenge is to accommodate its CTE mismatch with the RAFM substrate through the selection and incorporation of appropriate bond layers, thus allowing for enhanced coating durability and robustness. Systematic process optimization is being used to define the optimal plasma spray conditions for both the topcoat and bond-layer, and X-ray diffraction and SEM-EDS are applied to successfully validate the chemistry and phase composition of the coatings. The plasma-sprayed double-layer corrosion resistant coatings were also deposited onto simulated RAFM steel substrates, which are being tested separately under thermal cycling, high-temperature moist air oxidation as well as molten Pb-Li capsule corrosion conditions. Results from this testing on coated samples, and comparisons with bare RAFM reference samples will be presented and conclusions will be presented assessing the viability of the new ceramic coatings to be viable corrosion prevention systems for DCLL breeders in commercial nuclear fusion reactors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=breeding%20blanket" title="breeding blanket">breeding blanket</a>, <a href="https://publications.waset.org/abstracts/search?q=corrosion%20protection" title=" corrosion protection"> corrosion protection</a>, <a href="https://publications.waset.org/abstracts/search?q=coating" title=" coating"> coating</a>, <a href="https://publications.waset.org/abstracts/search?q=plasma%20spray" title=" plasma spray"> plasma spray</a> </p> <a href="https://publications.waset.org/abstracts/65800/functional-plasma-spray-ceramic-coatings-for-corrosion-protection-of-rafm-steels-in-fusion-energy-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65800.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">314</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">43</span> Stability of Porous SiC Based Materials under Relevant Conditions of Radiation and Temperature </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marta%20Malo">Marta Malo</a>, <a href="https://publications.waset.org/abstracts/search?q=Carlota%20Soto"> Carlota Soto</a>, <a href="https://publications.waset.org/abstracts/search?q=Carmen%20Garc%C3%ADa-Rosales"> Carmen García-Rosales</a>, <a href="https://publications.waset.org/abstracts/search?q=Teresa%20Hern%C3%A1ndez"> Teresa Hernández</a> </p> <p class="card-text"><strong>Abstract:</strong></p> SiC based composites are candidates for possible use as structural and functional materials in the future fusion reactors, the main role is intended for the blanket modules. In the blanket, the neutrons produced in the fusion reaction slow down and their energy is transformed into heat in order to finally generate electrical power. In the blanket design named Dual Coolant Lead Lithium (DCLL), a PbLi alloy for power conversion and tritium breeding circulates inside hollow channels called Flow Channel Inserts (FCIs). These FCI must protect the steel structures against the highly corrosive PbLi liquid and the high temperatures, but also provide electrical insulation in order to minimize magnetohydrodynamic interactions of the flowing liquid metal with the high magnetic field present in a magnetically confined fusion environment. Due to their nominally high temperature and radiation stability as well as corrosion resistance, SiC is the main choice for the flow channel inserts. The significantly lower manufacturing cost presents porous SiC (dense coating is required in order to assure protection against corrosion and as a tritium barrier) as a firm alternative to SiC/SiC composites for this purpose. This application requires the materials to be exposed to high radiation levels and extreme temperatures, conditions for which previous studies have shown noticeable changes in both the microstructure and the electrical properties of different types of silicon carbide. Both initial properties and radiation/temperature induced damage strongly depend on the crystal structure, polytype, impurities/additives that are determined by the fabrication process, so the development of a suitable material requires full control of these variables. For this work, several SiC samples with different percentage of porosity and sintering additives have been manufactured by the so-called sacrificial template method at the Ceit-IK4 Technology Center (San Sebastián, Spain), and characterized at Ciemat (Madrid, Spain). Electrical conductivity was measured as a function of temperature before and after irradiation with 1.8 MeV electrons in the Ciemat HVEC Van de Graaff accelerator up to 140 MGy (~ 2·10 -5 dpa). Radiation-induced conductivity (RIC) was also examined during irradiation at 550 ºC for different dose rates (from 0.5 to 5 kGy/s). Although no significant RIC was found in general for any of the samples, electrical conductivity increase with irradiation dose was observed to occur for some compositions with a linear tendency. However, first results indicate enhanced radiation resistance for coated samples. Preliminary thermogravimetric tests of selected samples, together with posterior XRD analysis allowed interpret radiation-induced modification of the electrical conductivity in terms of changes in the SiC crystalline structure. Further analysis is needed in order to confirm this. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DCLL%20blanket" title="DCLL blanket">DCLL blanket</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20conductivity" title=" electrical conductivity"> electrical conductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=flow%20channel%20insert" title=" flow channel insert"> flow channel insert</a>, <a href="https://publications.waset.org/abstracts/search?q=porous%20SiC" title=" porous SiC"> porous SiC</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20damage" title=" radiation damage"> radiation damage</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20stability" title=" thermal stability"> thermal stability</a> </p> <a href="https://publications.waset.org/abstracts/76433/stability-of-porous-sic-based-materials-under-relevant-conditions-of-radiation-and-temperature" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76433.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">208</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">42</span> The Study on Energy Saving in Clarification Process for Water Treatment Plant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wiwat%20Onnakklum">Wiwat Onnakklum</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Clarification is the turbidity removal process of water treatment plant. This paper was to study the factors affecting on energy consumption in order to control energy saving strategy. The factors studied were raw water turbidity in the range of 26-40 NTU and production rate in the range of 3.76-5.20 m³/sec. Clarifiers were sludge blanket and sludge recirculation clarifier. Experimental results found that the raw water turbidity was not affected significantly by energy consumption, while the production rate was affected significantly by energy consumption. Sludge blanket clarifier provided lower energy consumption than sludge recirculation clarifier about 32-37%. Subsequently, the operating pattern in production rate can be arranged to decreased energy consumption. The results showed that it can be reduced about 5.09 % of energy saving of clarification process about 754,655 Baht per year. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sludge%20blanket%20clarifier" title="sludge blanket clarifier">sludge blanket clarifier</a>, <a href="https://publications.waset.org/abstracts/search?q=sludge%20recirculation%20clarifier" title=" sludge recirculation clarifier"> sludge recirculation clarifier</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20treatment%20plant" title=" water treatment plant"> water treatment plant</a>, <a href="https://publications.waset.org/abstracts/search?q=energy" title=" energy"> energy</a> </p> <a href="https://publications.waset.org/abstracts/74988/the-study-on-energy-saving-in-clarification-process-for-water-treatment-plant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74988.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">329</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">41</span> Electrifying Textile Wastewater Sludge through Up-flow Anaerobic Sludge Blanket Reactor for Sustainable Waste Management</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tewodros%20Birhan">Tewodros Birhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Tamrat%20Tesfaye"> Tamrat Tesfaye</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Energy supply and waste management are two of humanity's greatest challenges. The world's energy supply primarily relies on fossil fuels, which produce excessive carbon dioxide emissions when burned. When released into the atmosphere in high concentrations, these emissions contribute to global warming. Generating textile wastewater sludge from the Bahir Dar Textile Industry poses significant environmental challenges. This sludge, a byproduct of extensive dyeing and finishing processes, contains a variety of harmful chemicals and heavy metals that can contaminate soil and water resources. This research work explores sustainable waste management strategies, focusing on biogas production from textile wastewater sludge using up-flow anaerobic sludge blanket reactor technology. The objective was to harness biogas, primarily methane, as a renewable energy source while mitigating the environmental impact of textile wastewater disposal. Employing a Central Composite Design approach, experiments were meticulously designed to optimize process parameters. Two key factors, Carbon-to-Nitrogen ratio, and pH, were varied at different levels (20:1 and 25:1 for C: N ratio; 6.8 and 7.6 for pH) to evaluate their influence on methane yield. A 0.4m3 up-flow anaerobic sludge blanket reactor was constructed to facilitate the anaerobic digestion process. Over 26 days, the reactor underwent rigorous testing and monitoring to ascertain its efficiency in biogas production. Meticulous experimentation and data analysis found that the optimal conditions for maximizing methane yield were achieved. Notably, a methane yield of 56.4% was attained, which signifies the effectiveness of the up-flow anaerobic sludge blanket reactor in converting textile wastewater sludge into a valuable energy resource. The findings of this study hold significant implications for both environmental conservation and energy sustainability. Furthermore, the utilization of up-flow anaerobic sludge blanket reactor technology underscores its potential as a viable solution for biogas production from textile wastewater sludge, further promoting the transition towards a circular economy paradigm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anaerobic%20digestion" title="anaerobic digestion">anaerobic digestion</a>, <a href="https://publications.waset.org/abstracts/search?q=biogas%20energy" title=" biogas energy"> biogas energy</a>, <a href="https://publications.waset.org/abstracts/search?q=circular%20economy" title=" circular economy"> circular economy</a>, <a href="https://publications.waset.org/abstracts/search?q=textile%20sludge" title=" textile sludge"> textile sludge</a>, <a href="https://publications.waset.org/abstracts/search?q=waste-to-energy" title=" waste-to-energy"> waste-to-energy</a> </p> <a href="https://publications.waset.org/abstracts/195293/electrifying-textile-wastewater-sludge-through-up-flow-anaerobic-sludge-blanket-reactor-for-sustainable-waste-management" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/195293.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">17</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">40</span> A Study on the Effect of Cod to Sulphate Ratio on Performance of Lab Scale Upflow Anaerobic Sludge Blanket Reactor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Neeraj%20Sahu">Neeraj Sahu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Saadiq"> Ahmad Saadiq</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Anaerobic sulphate reduction has the potential for being effective and economically viable over conventional treatment methods for the treatment of sulphate-rich wastewater. However, a major challenge in anaerobic sulphate reduction is the diversion of a fraction of organic carbon towards methane production and some minor problem such as odour problems, corrosion, and increase of effluent chemical oxygen demand. A high-rate anaerobic technology has encouraged researchers to extend its application to the treatment of complex wastewaters with relatively low cost and energy consumption compared to physicochemical methods. Therefore, the aim of this study was to investigate the effects of COD/SO₄²⁻ ratio on the performance of lab scale UASB reactor. A lab-scale upflow anaerobic sludge blanket (UASB) reactor was operated for 170 days. In which first 60 days, for successful start-up with acclimation under methanogenesis and sulphidogenesis at COD/SO₄²⁻ of 18 and were operated at COD/SO₄²⁻ ratios of 12, 8, 4 and 1 to evaluate the effects of the presence of sulfate on the reactor performance. The reactor achieved maximum COD removal efficiency and biogas evolution at the end of acclimation (control). This phase lasted 53 days with 89.5% efficiency. The biogas was 0.6 L/d at (OLR) of 1.0 kg COD/m³d when it was treating synthetic wastewater with effective volume of reactor as 2.8 L. When COD/SO₄²⁻ ratio changed from 12 to 1, slight decrease in COD removal efficiencies (76.8–87.4%) was observed, biogas production decreased from 0.58 to 0.32 L/d, while the sulfate removal efficiency increased from 42.5% to 72.7%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anaerobic" title="anaerobic">anaerobic</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20oxygen%20demand" title=" chemical oxygen demand"> chemical oxygen demand</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20loading%20rate" title=" organic loading rate"> organic loading rate</a>, <a href="https://publications.waset.org/abstracts/search?q=sulphate" title=" sulphate"> sulphate</a>, <a href="https://publications.waset.org/abstracts/search?q=up-flow%20anaerobic%20sludge%20blanket%20reactor" title=" up-flow anaerobic sludge blanket reactor"> up-flow anaerobic sludge blanket reactor</a> </p> <a href="https://publications.waset.org/abstracts/88716/a-study-on-the-effect-of-cod-to-sulphate-ratio-on-performance-of-lab-scale-upflow-anaerobic-sludge-blanket-reactor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88716.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">223</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">39</span> Comparison of an Upflow Anaerobic Sludge Blanket and an Anaerobic Filter for Treating Wheat Straw Wash Water</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Syazwani%20Idrus">Syazwani Idrus</a>, <a href="https://publications.waset.org/abstracts/search?q=Charles%20Banks"> Charles Banks</a>, <a href="https://publications.waset.org/abstracts/search?q=Sonia%20Heaven"> Sonia Heaven</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of osmotic stress was carried out to determine the ability for biogas production in two types of digesters; anaerobic sludge blanket and anaerobic filters in treating wheat straw washed water. Two anaerobic filters (AF1 and 2) and two UASB reactors (U1 and 2) with working volumes of 1.5 L were employed at mesophilic temperatures (37°C). Digesters AF1 and two were seeded with an inoculum which had previously been fed on with a synthetic wastewater includingSodium Chloride and Potassium Chloride. Digesters U1 and two were seeded with 1 kg wet weight of granular sludge which had previously been treating paper mill effluent. During the first 48 days, all digesters were successfully acclimated with synthetic wastewater (SW) to organic loading rate (OLR) of 6 g COD l^-1 day-1. Specific methane production (SMP) of 0.333 l CH4 g-1 COD). The feed was then changed to wash water from a washing operation to reduce the salt content of wheat straw (wheat straw wash water, WSW) at the same OLR. SMP fell sharply in all reactors to less than 0.1 l CH4 g^-1 COD, with the AF affected more than the UASB. The OLR was reduced to 2.5 g COD l^-1 day^-1 to allow adaptation to WSW, and both the UASB and the AF reactors achieved an SMP of 0.21 l CH4 g^-1 COD added at 82% of COD removal. This study also revealed the accumulation of potassium (K) inside the UASB granules to a concentration of 4.5 mg K g^-1 wet weight of granular sludge. The phenomenon of lower SMP and accumulation of K indicates the effect of osmotic stress when fed on WSW. This finding is consistent with the theory that methanogenic organisms operate a Potassium pump to maintain ionic equilibrium, and as this is an energy-driven process, it will, therefore, reduce the overall methane yield. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wheat%20straw%20wash%20water" title="wheat straw wash water">wheat straw wash water</a>, <a href="https://publications.waset.org/abstracts/search?q=upflow%20anaerobic%20sludge%20blanket" title=" upflow anaerobic sludge blanket"> upflow anaerobic sludge blanket</a>, <a href="https://publications.waset.org/abstracts/search?q=anaerobic%20filter" title=" anaerobic filter"> anaerobic filter</a>, <a href="https://publications.waset.org/abstracts/search?q=specific%20methane%20production" title=" specific methane production"> specific methane production</a>, <a href="https://publications.waset.org/abstracts/search?q=osmotic%20stress" title=" osmotic stress"> osmotic stress</a> </p> <a href="https://publications.waset.org/abstracts/22643/comparison-of-an-upflow-anaerobic-sludge-blanket-and-an-anaerobic-filter-for-treating-wheat-straw-wash-water" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22643.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">379</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">38</span> Comparison of an Upflow Anaerobic Sludge Blanket and an Anaerobic Filter for Treating Wheat Straw Washwater</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Syazwani%20Idrus">Syazwani Idrus</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Charles%20J.%20Banks"> S. Charles J. Banks</a>, <a href="https://publications.waset.org/abstracts/search?q=Sonia%20Heaven"> Sonia Heaven</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study compared the performance of upflow anaerobic sludge blanket (UASB) reactors and anaerobic filters (AF) for the treatment of wheat straw washwater (WSW) which has a high concentration of Potassium ions. The trial was conducted at mesophilic temperatures (37 °C). The digesters were started up over a 48-day period using a synthetic wastewater feed and reached an organic loading rate (OLR) of 6 g COD L^-1 day^-1 with a specific methane production (SMP) of 0.333 L CH4 g^-1 COD. When the feed was switched to WSW it was not possible to maintain the same loading rate as the SMP in all reactors fell sharply to less than 0.1 L CH4 g^-1 COD, with the AF affected more than the UASB. On reducing the OLR to 3 g COD L^-1 day^-1 the reactors recovered to produce 0.21 L CH4 g^-1 CODadded and gave 82% COD removal. A discrepancy between the COD consumed and the methane produced could be accounted for through increased maintenance energy requirement of the microbial community for osmo-regulation as K+ was found to accumulate in the sludge and in the UASB reached a concentration of 4.5 mg K g^-1 wet weight of granules. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anaerobic%20digestion" title="anaerobic digestion">anaerobic digestion</a>, <a href="https://publications.waset.org/abstracts/search?q=osmotic%20stress" title=" osmotic stress"> osmotic stress</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20oxygen%20demand" title=" chemical oxygen demand"> chemical oxygen demand</a>, <a href="https://publications.waset.org/abstracts/search?q=specific%20methane%20production" title=" specific methane production"> specific methane production</a> </p> <a href="https://publications.waset.org/abstracts/26374/comparison-of-an-upflow-anaerobic-sludge-blanket-and-an-anaerobic-filter-for-treating-wheat-straw-washwater" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26374.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">660</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">37</span> Conceptual Design of Experimental Helium Cooling Loop for Indian TBM R&D Experiments</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=B.%20K.%20Yadav">B. K. Yadav</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Gandhi"> A. Gandhi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20K.%20Verma"> A. K. Verma</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20S.%20Rao"> T. S. Rao</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Saraswat"> A. Saraswat</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20R.%20Kumar"> E. R. Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Sarkar"> M. Sarkar</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20N.%20Vyas"> K. N. Vyas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper deals with the conceptual design of Experimental Helium Cooling Loop (EHCL) for Indian Test Blanket Module (TBM) and its related thermal hydraulic experiments. Indian TBM team is developing Lead Lithium cooled Ceramic Breeder (IN-LLCB) TBM to be tested in ITER. The TBM box structure is cooled by high pressure (8 MPa) and high temperature (300-500C) helium gas. The first wall of TBM made of complex channel geometry having several parallel channels carrying helium gas for efficient heat extraction. Several mock-ups of these channels need to be tested before finalizing the TBM first wall design and fabrication. Besides the individual testing of such mock-ups of breeding blanket, the testing of Pb-Li to helium heat exchanger, the operational experience of helium loop and understanding of the behaviour of high pressure and high temperature system components are very essential for final development of Helium Cooling System for LLCB TBM in ITER. The main requirements and characteristics of the EHCL and its conceptual design are presented in this paper. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DEMO" title="DEMO">DEMO</a>, <a href="https://publications.waset.org/abstracts/search?q=EHCL" title=" EHCL"> EHCL</a>, <a href="https://publications.waset.org/abstracts/search?q=ITER" title=" ITER"> ITER</a>, <a href="https://publications.waset.org/abstracts/search?q=LLCB%20TBM" title=" LLCB TBM"> LLCB TBM</a> </p> <a href="https://publications.waset.org/abstracts/5591/conceptual-design-of-experimental-helium-cooling-loop-for-indian-tbm-rd-experiments" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5591.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">387</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">36</span> An Unusual Cause of Electrocardiographic Artefact: Patient's Warming Blanket</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sanjay%20Dhiraaj">Sanjay Dhiraaj</a>, <a href="https://publications.waset.org/abstracts/search?q=Puneet%20Goyal"> Puneet Goyal</a>, <a href="https://publications.waset.org/abstracts/search?q=Aditya%20Kapoor"> Aditya Kapoor</a>, <a href="https://publications.waset.org/abstracts/search?q=Gaurav%20Misra"> Gaurav Misra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In electrocardiography, an ECG artefact is used to indicate something that is not heart-made. Although technological advancements have produced monitors with the potential of providing accurate information and reliable heart rate alarms, despite this, interference of the displayed electrocardiogram still occurs. These interferences can be from the various electrical gadgets present in the operating room or electrical signals from other parts of the body. Artefacts may also occur due to poor electrode contact with the body or due to machine malfunction. Knowing these artefacts is of utmost importance so as to avoid unnecessary and unwarranted diagnostic as well as interventional procedures. We report a case of ECG artefacts occurring due to patient warming blanket and its consequences. A 20-year-old male with a preoperative diagnosis of exstrophy epispadias complex was posted for surgery under epidural and general anaesthesia. Just after endotracheal intubation, we observed nonspecific ECG changes on the monitor. At a first glance, the monitor strip revealed broad QRs complexes suggesting a ventricular bigeminal rhythm. Closer analysis revealed these to be artefacts because although the complexes were looking broad on the first glance there was clear presence of normal sinus complexes which were immediately followed by 'broad complexes' or artefacts produced by some device or connection. These broad complexes were labeled as artefacts as they were originating in the absolute refractory period of the previous normal sinus beat. It would be physiologically impossible for the myocardium to depolarize so rapidly as to produce a second QRS complex. A search for the possible reason for the artefacts was made and after deepening the plane of anaesthesia, ruling out any possible electrolyte abnormalities, checking of ECG leads and its connections, changing monitors, checking all other monitoring connections, checking for proper grounding of anaesthesia machine and OT table, we found that after switching off the patient’s warming apparatus the rhythm returned to a normal sinus one and the 'broad complexes' or artefacts disappeared. As misdiagnosis of ECG artefacts may subject patients to unnecessary diagnostic and therapeutic interventions so a thorough knowledge of the patient and monitors allow for a quick interpretation and resolution of the problem. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ECG%20artefacts" title="ECG artefacts">ECG artefacts</a>, <a href="https://publications.waset.org/abstracts/search?q=patient%20warming%20blanket" title=" patient warming blanket"> patient warming blanket</a>, <a href="https://publications.waset.org/abstracts/search?q=peri-operative%20arrhythmias" title=" peri-operative arrhythmias"> peri-operative arrhythmias</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile%20messaging%20services" title=" mobile messaging services"> mobile messaging services</a> </p> <a href="https://publications.waset.org/abstracts/79130/an-unusual-cause-of-electrocardiographic-artefact-patients-warming-blanket" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79130.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">276</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">35</span> Thermoelectric Blanket for Aiding the Treatment of Cerebral Hypoxia and Other Related Conditions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarayu%20Vanga">Sarayu Vanga</a>, <a href="https://publications.waset.org/abstracts/search?q=Jorge%20Galeano-Cabral"> Jorge Galeano-Cabral</a>, <a href="https://publications.waset.org/abstracts/search?q=Kaya%20Wei"> Kaya Wei</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cerebral hypoxia refers to a condition in which there is a decrease in oxygen supply to the brain. Patients suffering from this condition experience a decrease in their body temperature. While there isn't any cure to treat cerebral hypoxia as of date, certain procedures are utilized to help aid in the treatment of the condition. Regulating the body temperature is an example of one of those procedures. Hypoxia is well known to reduce the body temperature of mammals, although the neural origins of this response remain uncertain. In order to speed recovery from this condition, it is necessary to maintain a stable body temperature. In this study, we present an approach to regulating body temperature for patients who suffer from cerebral hypoxia or other similar conditions. After a thorough literature study, we propose the use of thermoelectric blankets, which are temperature-controlled thermal blankets based on thermoelectric devices. These blankets are capable of heating up and cooling down the patient to stabilize body temperature. This feature is possible through the reversible effect that thermoelectric devices offer while behaving as a thermal sensor, and it is an effective way to stabilize temperature. Thermoelectricity is the direct conversion of thermal to electrical energy and vice versa. This effect is now known as the Seebeck effect, and it is characterized by the Seebeck coefficient. In such a configuration, the device has cooling and heating sides with temperatures that can be interchanged by simply switching the direction of the current input in the system. This design integrates various aspects, including a humidifier, ventilation machine, IV-administered medication, air conditioning, circulation device, and a body temperature regulation system. The proposed design includes thermocouples that will trigger the blanket to increase or decrease a set temperature through a medical temperature sensor. Additionally, the proposed design allows an efficient way to control fluctuations in body temperature while being cost-friendly, with an expected cost of 150 dollars. We are currently working on developing a prototype of the design to collect thermal and electrical data under different conditions and also intend to perform an optimization analysis to improve the design even further. While this proposal was developed for treating cerebral hypoxia, it can also aid in the treatment of other related conditions, as fluctuations in body temperature appear to be a common symptom that patients have for many illnesses. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=body%20temperature%20regulation" title="body temperature regulation">body temperature regulation</a>, <a href="https://publications.waset.org/abstracts/search?q=cerebral%20hypoxia" title=" cerebral hypoxia"> cerebral hypoxia</a>, <a href="https://publications.waset.org/abstracts/search?q=thermoelectric" title=" thermoelectric"> thermoelectric</a>, <a href="https://publications.waset.org/abstracts/search?q=blanket%20design" title=" blanket design"> blanket design</a> </p> <a href="https://publications.waset.org/abstracts/165923/thermoelectric-blanket-for-aiding-the-treatment-of-cerebral-hypoxia-and-other-related-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165923.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">171</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">34</span> PbLi Activation Due to Corrosion Products in WCLL BB (EU-DEMO) and Its Impact on Reactor Design and Recycling</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nicole%20Virgili">Nicole Virgili</a>, <a href="https://publications.waset.org/abstracts/search?q=Marco%20Utili"> Marco Utili</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The design of the Breeding Blanket in Tokamak fusion energy systems has to guarantee sufficient availability in addition to its functions, that are, tritium breeding self-sufficiency, power extraction and shielding (the magnets and the VV). All these function in the presence of extremely harsh operating conditions in terms of heat flux and neutron dose as well as chemical environment of the coolant and breeder that challenge structural materials (structural resistance and corrosion resistance). The movement and activation of fluids from the BB to the Ex-vessel components in a fusion power plant have an important radiological consideration because flowing material can carry radioactivity to safety-critical areas. This includes gamma-ray emission from activated fluid and activated corrosion products, and secondary activation resulting from neutron emission, with implication for the safety of maintenance personnel and damage to electrical and electronic equipment. In addition to the PbLi breeder activation, it is important to evaluate the contribution due to the activated corrosion products (ACPs) dissolved in the lead-lithium eutectic alloy, at different concentration levels. Therefore, the purpose of the study project is to evaluate the PbLi activity utilizing the FISPACT II inventory code. Emphasis is given on how the design of the EU-DEMO WCLL, and potential recycling of the breeder material will be impacted by the activation of PbLi and the associated active corrosion products (ACPs). For this scope the following Computational Tools, Data and Geometry have been considered: • Neutron source: EU-DEMO neutron flux < 1014/cm2/s • Neutron flux distribution in equatorial breeding blanket module (BBM) #13 in the WCLL BB outboard central zone, which is the most activated zone, with the aim to introduce a conservative component utilizing MNCP6. • The recommended geometry model: 2017 EU DEMO CAD model. • Blanket Module Material Specifications (Composition) • Activation calculations for different ACP concentration levels in the PbLi breeder, with a given chemistry in stationary equilibrium conditions, using FISPACT II code. Results suggest that there should be a waiting time of about 10 years from the shut-down (SD) to be able to safely manipulate the PbLi for recycling operations with simple shielding requirements. The dose rate is mainly given by the PbLi and the ACP concentration (x1 or x 100) does not shift the result. In conclusion, the results show that there is no impact on PbLi activation due to ACPs levels. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=activation" title="activation">activation</a>, <a href="https://publications.waset.org/abstracts/search?q=corrosion%20products" title=" corrosion products"> corrosion products</a>, <a href="https://publications.waset.org/abstracts/search?q=recycling" title=" recycling"> recycling</a>, <a href="https://publications.waset.org/abstracts/search?q=WCLL%20BB." title=" WCLL BB."> WCLL BB.</a>, <a href="https://publications.waset.org/abstracts/search?q=PbLi" title=" PbLi"> PbLi</a> </p> <a href="https://publications.waset.org/abstracts/167142/pbli-activation-due-to-corrosion-products-in-wcll-bb-eu-demo-and-its-impact-on-reactor-design-and-recycling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167142.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">134</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">33</span> Participatory Testing of Precision Fertilizer Management Technologies in Mid-Hills of Nepal</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kedar%20Nath%20Nepal">Kedar Nath Nepal</a>, <a href="https://publications.waset.org/abstracts/search?q=Dyutiman%20Choudhary"> Dyutiman Choudhary</a>, <a href="https://publications.waset.org/abstracts/search?q=Naba%20Raj%20Pandit"> Naba Raj Pandit</a>, <a href="https://publications.waset.org/abstracts/search?q=Yam%20Gahire"> Yam Gahire</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Crop fertilizer recommendations are outdated as these are based on the response trails conducted over half a century ago. Further, these recommendations were based on the response trials conducted over large geographical area ignoring the large spatial variability in indigenous nutrient supplying capacity of soils typical of most smallholder systems. Application of fertilizer following such blanket recommendation in fields with varying native nutrient supply capacity leads to under application in some places and over application in others leading to reduced nutrient-use-efficiency (NUE), loss of profitability, and increased environmental risks associated with loss of unutilized nutrient through emissions or leaching. Opportunities exist to further increase yield and profitability through a significant gain in fertilizer use efficiency with commercialization of affordable and precise application technologies. We conducted participatory trails in Maize (Zea Mays), Cauliflower (Brassica oleracea var. botrytis) and Tomato (Solanum lycopersicum) in Mid Hills of Nepal to evaluate the efficacy of Urea Deep Placement (UDP and Polymer Coated Urea (PCU);. UDP contains 46% of N having individual briquette size 2.7 gm each and PCU contains 44% of N . Both PCU and urea briquette applied at reduced amount (100 kg N/ha) during planting produced similar yields (p>0.05) compared with regular urea (200 Kg N/ha). . These fertilizers also reduced N fertilizer by 35 - 50% over government blanket recommendations. Further, PCU and urea briquette increased farmer’s net income by USD 60 to 80. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high%20efficiency%20fertilizers" title="high efficiency fertilizers">high efficiency fertilizers</a>, <a href="https://publications.waset.org/abstracts/search?q=urea%20deep%20placement" title=" urea deep placement"> urea deep placement</a>, <a href="https://publications.waset.org/abstracts/search?q=briquette%20polymer%20coated%20urea" title=" briquette polymer coated urea"> briquette polymer coated urea</a>, <a href="https://publications.waset.org/abstracts/search?q=zea%20mays" title=" zea mays"> zea mays</a>, <a href="https://publications.waset.org/abstracts/search?q=brassica" title=" brassica"> brassica</a>, <a href="https://publications.waset.org/abstracts/search?q=lycopersicum" title=" lycopersicum"> lycopersicum</a>, <a href="https://publications.waset.org/abstracts/search?q=Nepal" title=" Nepal"> Nepal</a> </p> <a href="https://publications.waset.org/abstracts/144992/participatory-testing-of-precision-fertilizer-management-technologies-in-mid-hills-of-nepal" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144992.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">179</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">32</span> Separate Production of Hydrogen and Methane from Ethanol Wastewater Using Two-Stage UASB: Micronutrient Transportation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Jaikeaw">S. Jaikeaw</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Chavadej"> S. Chavadej</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of this study was to determine the effects of COD loading rate on hydrogen and methane production and micronutrient transportation using a two-stage upflow anaerobic sludge blanket (UASB) system under mesophilic temperature (37°C) with a constant recycle ratio of 1:1 (final effluent flow rate: feed flow rate). The first (hydrogen) UASB unit having 4 L liquid holding volume was controlled at pH 5.5 but the second (methane) UASB unit having 24 L liquid holding volume had no pH control. The two-stage UASB system operated at different COD loading rates from 8 to 20 kg/m³d based on total UASB working volume. The results showed that, at the optimum COD loading rate of 13 kg/m³d, the produced gas from the hydrogen UASB unit contained 1.5% H₂, 16.5% CH₄, and 82% CO₂ with H₂S of 252 ppm and also provided a hydrogen yield of 1.66 mL/g COD removed (or 0.56 mL/g COD applied) and a specific hydrogen production rate of 156.85 ml H₂/LRd (or 5.12 ml H₂/g MLVSS d). Under the optimum COD loading rate, the produced gas from the methane UASB unit mainly contained methane and carbon dioxide without hydrogen of 74 and 26%, respectively with hydrogen sulfide of 287 ppm and the system also provided a maximum methane yield of 407.00 mL/g COD removed (or 263.23 mL/g COD applied) and a specific methane production rate of 2081.44 ml CH₄/LRd (or 99.75 ml CH₄/g MLVSS d). Under the optimum COD loading rate, all micronutrients markedly dropped by the sulfide precipitation reactions. The reduction of micronutrients mostly appeared in the methane UASB unit. Under the studied conditions, both Co and Ni were found to be greatly precipitated out, causing the deficiency to microbial activity. It is hypothesized that an addition of both Co and Ni can improve the methanogenic activity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20and%20methane%20production" title="hydrogen and methane production">hydrogen and methane production</a>, <a href="https://publications.waset.org/abstracts/search?q=ethanol%20wastewater" title=" ethanol wastewater"> ethanol wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=a%20two-stage%20upflow%20anaerobic%20blanket%20%28UASB%29%20system" title=" a two-stage upflow anaerobic blanket (UASB) system"> a two-stage upflow anaerobic blanket (UASB) system</a>, <a href="https://publications.waset.org/abstracts/search?q=mesophillic%20temperature" title=" mesophillic temperature"> mesophillic temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=microbial%20concentration%20%28MLVSS%29" title=" microbial concentration (MLVSS)"> microbial concentration (MLVSS)</a>, <a href="https://publications.waset.org/abstracts/search?q=micronutrients" title=" micronutrients"> micronutrients</a> </p> <a href="https://publications.waset.org/abstracts/66190/separate-production-of-hydrogen-and-methane-from-ethanol-wastewater-using-two-stage-uasb-micronutrient-transportation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/66190.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">291</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">31</span> Evaluating the Process of Biofuel Generation from Grass</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Karan%20Bhandari">Karan Bhandari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Almost quarter region of Indian terrain is covered by grasslands. Grass being a low maintenance perennial crop is in abundance. Farmers are well acquainted with its nature, yield and storage. The aim of this paper is to study and identify the applicability of grass as a source of bio fuel. Anaerobic break down is a well-recognized technology. This process is vital for harnessing bio fuel from grass. Grass is a lignocellulosic material which is fibrous and can readily cause problems with parts in motion. Further, it also has a tendency to float. This paper also deals with the ideal digester configuration for biogas generation from grass. Intensive analysis of the literature is studied on the optimum production of grass storage in accordance with bio digester specifications. Subsequent to this two different digester systems were designed, fabricated, analyzed. The first setup was a double stage wet continuous arrangement usually known as a Continuously Stirred Tank Reactor (CSTR). The next was a double stage, double phase system implementing Sequentially Fed Leach Beds using an Upflow Anaerobic Sludge Blanket (SLBR-UASB). The above methodologies were carried for the same feedstock acquired from the same field. Examination of grass silage was undertaken using Biomethane Potential values. The outcomes portrayed that the Continuously Stirred Tank Reactor system produced about 450 liters of methane per Kg of volatile solids, at a detention period of 48 days. The second method involving Leach Beds produced about 340 liters of methane per Kg of volatile solids with a detention period of 28 days. The results showcased that CSTR when designed exclusively for grass proved to be extremely efficient in methane production. The SLBR-UASB has significant potential to allow for lower detention times with significant levels of methane production. This technology has immense future for research and development in India in terms utilizing of grass crop as a non-conventional source of fuel. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomethane%20potential%20values" title="biomethane potential values">biomethane potential values</a>, <a href="https://publications.waset.org/abstracts/search?q=bio%20digester%20specifications" title=" bio digester specifications"> bio digester specifications</a>, <a href="https://publications.waset.org/abstracts/search?q=continuously%20stirred%20tank%20reactor" title=" continuously stirred tank reactor"> continuously stirred tank reactor</a>, <a href="https://publications.waset.org/abstracts/search?q=upflow%20anaerobic%20sludge%20blanket" title=" upflow anaerobic sludge blanket"> upflow anaerobic sludge blanket</a> </p> <a href="https://publications.waset.org/abstracts/60567/evaluating-the-process-of-biofuel-generation-from-grass" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60567.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">249</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">30</span> Development of DEMO-FNS Hybrid Facility and Its Integration in Russian Nuclear Fuel Cycle</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yury%20S.%20Shpanskiy">Yury S. Shpanskiy</a>, <a href="https://publications.waset.org/abstracts/search?q=Boris%20V.%20Kuteev"> Boris V. Kuteev</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Development of a fusion-fission hybrid facility based on superconducting conventional tokamak DEMO-FNS runs in Russia since 2013. The main design goal is to reach the technical feasibility and outline prospects of industrial hybrid technologies providing the production of neutrons, fuel nuclides, tritium, high-temperature heat, electricity and subcritical transmutation in Fusion-Fission Hybrid Systems. The facility should operate in a steady-state mode at the fusion power of 40 MW and fission reactions of 400 MW. Major tokamak parameters are the following: major radius R=3.2 m, minor radius a=1.0 m, elongation 2.1, triangularity 0.5. The design provides the neutron wall loading of ~0.2 MW/m², the lifetime neutron fluence of ~2 MWa/m², with the surface area of the active cores and tritium breeding blanket ~100 m². Core plasma modelling showed that the neutron yield ~10¹⁹ n/s is maximal if the tritium/deuterium density ratio is 1.5-2.3. The design of the electromagnetic system (EMS) defined its basic parameters, accounting for the coils strength and stability, and identified the most problematic nodes in the toroidal field coils and the central solenoid. The EMS generates toroidal, poloidal and correcting magnetic fields necessary for the plasma shaping and confinement inside the vacuum vessel. EMC consists of eighteen superconducting toroidal field coils, eight poloidal field coils, five sections of a central solenoid, correction coils, in-vessel coils for vertical plasma control. Supporting structures, the thermal shield, and the cryostat maintain its operation. EMS operates with the pulse duration of up to 5000 hours at the plasma current up to 5 MA. The vacuum vessel (VV) is an all-welded two-layer toroidal shell placed inside the EMS. The free space between the vessel shells is filled with water and boron steel plates, which form the neutron protection of the EMS. The VV-volume is 265 m³, its mass with manifolds is 1800 tons. The nuclear blanket of DEMO-FNS facility was designed to provide functions of minor actinides transmutation, tritium production and enrichment of spent nuclear fuel. The vertical overloading of the subcritical active cores with MA was chosen as prospective. Analysis of the device neutronics and the hybrid blanket thermal-hydraulic characteristics has been performed for the system with functions covering transmutation of minor actinides, production of tritium and enrichment of spent nuclear fuel. A study of FNS facilities role in the Russian closed nuclear fuel cycle was performed. It showed that during ~100 years of operation three FNS facilities with fission power of 3 GW controlled by fusion neutron source with power of 40 MW can burn 98 tons of minor actinides and 198 tons of Pu-239 can be produced for startup loading of 20 fast reactors. Instead of Pu-239, up to 25 kg of tritium per year may be produced for startup of fusion reactors using blocks with lithium orthosilicate instead of fissile breeder blankets. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fusion-fission%20hybrid%20system" title="fusion-fission hybrid system">fusion-fission hybrid system</a>, <a href="https://publications.waset.org/abstracts/search?q=conventional%20tokamak" title=" conventional tokamak"> conventional tokamak</a>, <a href="https://publications.waset.org/abstracts/search?q=superconducting%20electromagnetic%20system" title=" superconducting electromagnetic system"> superconducting electromagnetic system</a>, <a href="https://publications.waset.org/abstracts/search?q=two-layer%20vacuum%20vessel" title=" two-layer vacuum vessel"> two-layer vacuum vessel</a>, <a href="https://publications.waset.org/abstracts/search?q=subcritical%20active%20cores" title=" subcritical active cores"> subcritical active cores</a>, <a href="https://publications.waset.org/abstracts/search?q=nuclear%20fuel%20cycle" title=" nuclear fuel cycle"> nuclear fuel cycle</a> </p> <a href="https://publications.waset.org/abstracts/107915/development-of-demo-fns-hybrid-facility-and-its-integration-in-russian-nuclear-fuel-cycle" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107915.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">151</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">29</span> An Improvement of a Dynamic Model of the Secondary Sedimentation Tank and Field Validation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zahir%20Bakiri">Zahir Bakiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Saci%20Nacefa"> Saci Nacefa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper a comparison in made between two models, with and without dispersion term, and focused on the characterization of the movement of the sludge blanket in the secondary sedimentation tank using the solid flux theory and the velocity settling. This allowed us develop a one-dimensional models, with and without dispersion based on a thorough experimental study carried out in situ and the application of online data which are the mass load flow, transfer concentration, and influent characteristic. On the other hand, in the proposed model, the new settling velocity law (double-exponential function) used is based on the Vesilind function. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wastewater" title="wastewater">wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=activated%20sludge" title=" activated sludge"> activated sludge</a>, <a href="https://publications.waset.org/abstracts/search?q=sedimentation" title=" sedimentation"> sedimentation</a>, <a href="https://publications.waset.org/abstracts/search?q=settling%20velocity" title=" settling velocity"> settling velocity</a>, <a href="https://publications.waset.org/abstracts/search?q=settling%20models" title=" settling models"> settling models</a> </p> <a href="https://publications.waset.org/abstracts/23073/an-improvement-of-a-dynamic-model-of-the-secondary-sedimentation-tank-and-field-validation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23073.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">392</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">28</span> Modeling of Sand Boil near the Danube River</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Edina%20Koch">Edina Koch</a>, <a href="https://publications.waset.org/abstracts/search?q=K%C3%A1roly%20Gomb%C3%A1s"> Károly Gombás</a>, <a href="https://publications.waset.org/abstracts/search?q=M%C3%A1rton%20Maller"> Márton Maller</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Little Plain is located along the Danube river, and this area is a “hotbed” of sand boil formation. This is due to the combination of a 100-250 m thick gravel layer beneath the Little Plain with a relatively thin blanket of poor soil spreading the gravel with variable thickness. Sand boils have a tradition and history in this area. It was possible to know which sand boil started and stopped working at what water level, and some of them even have names. The authors present a 2D finite element model of groundwater flow through a selected cross-section of the Danube river, which observed activation of piping phenomena during the 2013 flood event. Soil parametrization is based on a complex site investigation program conducted along the Danube River in the Little Plain. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=site%20characterization" title="site characterization">site characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=groundwater%20flow" title=" groundwater flow"> groundwater flow</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20modeling" title=" numerical modeling"> numerical modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=sand%20boil" title=" sand boil"> sand boil</a> </p> <a href="https://publications.waset.org/abstracts/145545/modeling-of-sand-boil-near-the-danube-river" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/145545.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">99</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">27</span> The Impact of Artificial Intelligence on Human Rights Priciples and Obligations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adel%20Atta%20Youssef%20Rezkalla">Adel Atta Youssef Rezkalla</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Russia's invasion of Ukraine tested the international community and prompted not only states but also non-state actors to take deterrent measures in response. In fact, international sports federations, notably FIFA and UEFA, have managed to shift the power dynamic quite effectively by imposing a blanket ban on Russian national teams and clubs. The purpose of this article is to examine the human rights consequences of such actions by international sports organizations. First, the article moves away from assessing the legal status of FIFA and UEFA under international law and examines the question of how a legal connection can be established with their human rights obligations. Secondly, the human rights aspects of the controversial FIFA and UEFA measures against Russian athletes are examined and these are analyzed in more detail using the proportionality test than the principle of non-discrimination under international human rights law. Finally, the main avenues for redress for possible human rights violations related to the actions taken by these organizations are identified and the challenges of arbitration and litigation in Switzerland are highlighted. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sustainable%20development" title="sustainable development">sustainable development</a>, <a href="https://publications.waset.org/abstracts/search?q=human%20rights" title=" human rights"> human rights</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20right%20to%20development" title=" the right to development"> the right to development</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20human%20rights-based%20approach%20to%20development" title=" the human rights-based approach to development"> the human rights-based approach to development</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20rights" title=" environmental rights"> environmental rights</a>, <a href="https://publications.waset.org/abstracts/search?q=economic%20development" title=" economic development"> economic development</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20sustainability%20human%20rights%20protection" title=" social sustainability human rights protection"> social sustainability human rights protection</a>, <a href="https://publications.waset.org/abstracts/search?q=human%20rights%20violations" title=" human rights violations"> human rights violations</a>, <a href="https://publications.waset.org/abstracts/search?q=workers%E2%80%99%20rights" title=" workers’ rights"> workers’ rights</a>, <a href="https://publications.waset.org/abstracts/search?q=justice" title=" justice"> justice</a>, <a href="https://publications.waset.org/abstracts/search?q=security." title=" security."> security.</a> </p> <a href="https://publications.waset.org/abstracts/184309/the-impact-of-artificial-intelligence-on-human-rights-priciples-and-obligations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/184309.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">82</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">26</span> Whole Body Cooling Hypothermia Treatment Modelling Using a Finite Element Thermoregulation Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ana%20Beatriz%20C.%20G.%20Silva">Ana Beatriz C. G. Silva</a>, <a href="https://publications.waset.org/abstracts/search?q=Luiz%20Carlos%20Wrobel"> Luiz Carlos Wrobel</a>, <a href="https://publications.waset.org/abstracts/search?q=Fernando%20Luiz%20B.%20Ribeiro"> Fernando Luiz B. Ribeiro</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a thermoregulation model using the finite element method to perform numerical analyses of brain cooling procedures as a contribution to the investigation on the use of therapeutic hypothermia after ischemia in adults. The use of computational methods can aid clinicians to observe body temperature using different cooling methods without the need of invasive techniques, and can thus be a valuable tool to assist clinical trials simulating different cooling options that can be used for treatment. In this work, we developed a FEM package applied to the solution of the continuum bioheat Pennes equation. Blood temperature changes were considered using a blood pool approach and a lumped analysis for intravascular catheter method of blood cooling. Some analyses are performed using a three-dimensional mesh based on a complex geometry obtained from computed tomography medical images, considering a cooling blanket and a intravascular catheter. A comparison is made between the results obtained and the effects of each case in brain temperature reduction in a required time, maintenance of body temperature at moderate hypothermia levels and gradual rewarming. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=brain%20cooling" title="brain cooling">brain cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20method" title=" finite element method"> finite element method</a>, <a href="https://publications.waset.org/abstracts/search?q=hypothermia%20treatment" title=" hypothermia treatment"> hypothermia treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=thermoregulation" title=" thermoregulation"> thermoregulation</a> </p> <a href="https://publications.waset.org/abstracts/65757/whole-body-cooling-hypothermia-treatment-modelling-using-a-finite-element-thermoregulation-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65757.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">316</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">25</span> Aerogel Fabrication Via Modified Rapid Supercritical Extraction (RSCE) Process - Needle Valve Pressure Release</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haibo%20Zhao">Haibo Zhao</a>, <a href="https://publications.waset.org/abstracts/search?q=Thomas%20Andre"> Thomas Andre</a>, <a href="https://publications.waset.org/abstracts/search?q=Katherine%20Avery"> Katherine Avery</a>, <a href="https://publications.waset.org/abstracts/search?q=Alper%20Kiziltas"> Alper Kiziltas</a>, <a href="https://publications.waset.org/abstracts/search?q=Deborah%20Mielewski"> Deborah Mielewski</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Silica aerogels were fabricated through a modified rapid supercritical extraction (RSCE) process. The silica aerogels were made using a tetramethyl orthosilicate precursor and then placed in a hot press and brought to the supercritical point of the solvent, ethanol. In order to control the pressure release without a pressure controller, a needle valve was used. The resulting aerogels were then characterized for their physical and chemical properties and compared to silica aerogels created using similar methods. The aerogels fabricated using this modified RSCE method were found to have similar properties to those in other papers using the unmodified RSCE method. Silica aerogel infused glass blanket composite, graphene reinforced silica aerogel composite were also successfully fabricated by this new method. The modified RSCE process and system is a prototype for better gas outflow control with a lower cost of equipment setup. Potentially, this process could be evolved to a continuous low-cost high-volume production process to meet automotive requirements. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aerogel" title="aerogel">aerogel</a>, <a href="https://publications.waset.org/abstracts/search?q=automotive" title=" automotive"> automotive</a>, <a href="https://publications.waset.org/abstracts/search?q=rapid%20supercritical%20extraction%20process" title=" rapid supercritical extraction process"> rapid supercritical extraction process</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20cost%20production" title=" low cost production"> low cost production</a> </p> <a href="https://publications.waset.org/abstracts/141294/aerogel-fabrication-via-modified-rapid-supercritical-extraction-rsce-process-needle-valve-pressure-release" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141294.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">190</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">24</span> Identification of Microbial Community in an Anaerobic Reactor Treating Brewery Wastewater</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abimbola%20M.%20Enitan">Abimbola M. Enitan</a>, <a href="https://publications.waset.org/abstracts/search?q=John%20O.%20Odiyo"> John O. Odiyo</a>, <a href="https://publications.waset.org/abstracts/search?q=Feroz%20M.%20Swalaha"> Feroz M. Swalaha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study of microbial ecology and their function in anaerobic digestion processes are essential to control the biological processes. This is to know the symbiotic relationship between the microorganisms that are involved in the conversion of complex organic matter in the industrial wastewater to simple molecules. In this study, diversity and quantity of bacterial community in the granular sludge taken from the different compartments of a full-scale upflow anaerobic sludge blanket (UASB) reactor treating brewery wastewater was investigated using polymerase chain reaction (PCR) and real-time quantitative PCR (qPCR). The phylogenetic analysis showed three major eubacteria phyla that belong to <em>Proteobacteria, Firmicutes </em>and<em> Chloroflexi</em> in the full-scale UASB reactor, with different groups populating different compartment. The result of qPCR assay showed high amount of eubacteria with increase in concentration along the reactor’s compartment. This study extends our understanding on the diverse, topological distribution and shifts in concentration of microbial communities in the different compartments of a full-scale UASB reactor treating brewery wastewater. The colonization and the trophic interactions among these microbial populations in reducing and transforming complex organic matter within the UASB reactors were established. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bacteria" title="bacteria">bacteria</a>, <a href="https://publications.waset.org/abstracts/search?q=brewery%20wastewater" title=" brewery wastewater"> brewery wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=real-time%20quantitative%20PCR" title=" real-time quantitative PCR"> real-time quantitative PCR</a>, <a href="https://publications.waset.org/abstracts/search?q=UASB%20reactor" title=" UASB reactor"> UASB reactor</a> </p> <a href="https://publications.waset.org/abstracts/79480/identification-of-microbial-community-in-an-anaerobic-reactor-treating-brewery-wastewater" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79480.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">23</span> The Concept of Development: A Normative Restructured Model in the Light of Indian Political Thought and Classical Liberalism</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarthak%20S.%20Salunke">Sarthak S. Salunke</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Development, as a notion, is seen in perspective of western philosophical conceptions, and the western developed nations have become a yardstick for setting up development goals for developing and underdeveloped nations around the world. This blanket term of development becomes superficial and materialistic in context of the vast geopolitical, territorial, cultural and behavioral diversities existing in countries of the Africa and the Asia, and tends to undermine the atomistic aspect of development. Indian political theories, which are often seen as religious philosophies, have inherent structure of development of human being as an individual and as a part of the society, and, in result, development of the State. These theories, primarily individualistic in nature, have a combination of altruism and rationalism which guides human beings towards constructing a collectively developed and morally sustainable society. This research focuses on the application of this Indian thought in combination of classical liberal thought to tackle the issues of development in diverse societies. The proposed restructured model of development is based on molecular individualism, instead of atomic individual approach of liberalists, which lets development modelers to target meaningful clusters for designating goals for development based on the particular needs based on geopolitical, cultural and ethical requirements, and making it meaningful in conjunction with global development to establish a harmony between western and eastern worlds. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Indian%20political%20thought" title="Indian political thought">Indian political thought</a>, <a href="https://publications.waset.org/abstracts/search?q=development" title=" development"> development</a>, <a href="https://publications.waset.org/abstracts/search?q=liberalism" title=" liberalism"> liberalism</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20individualism" title=" molecular individualism"> molecular individualism</a> </p> <a href="https://publications.waset.org/abstracts/80292/the-concept-of-development-a-normative-restructured-model-in-the-light-of-indian-political-thought-and-classical-liberalism" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80292.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">189</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">22</span> Spatiotemporal Impacts of Human Mobility Relating to Daily Activities on Air Pollution Based on Long-Term Taxi Trajectories</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xinyue%20Gu">Xinyue Gu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Air pollution is a significant issue in urban areas globally. While human mobility plays a crucial role in determining air quality, its effects vary by travel purposes due to distinct spatiotemporal patterns. The study utilizes a trip purpose inference algorithm to classify mobility based on three-month taxi trajectory data of Beijing and examines its heterogeneous relationship with air pollution using interpretable XGBoost-SHAP models. The results indicate that human mobility has a smaller impact on air pollution than natural environments yet a larger impact than built environments. In the long term, the influence of mobility becomes more pronounced, with clearer correlations. Notably, work- and home-purpose mobility exhibit a negative correlation with pollution, challenging the assumption that more mobility always increases pollution. These findings provide actionable insights for urban planning, including promoting mixed-use development and work-residence integration, creating urban wind corridors and open green spaces, and adopting low-emission transportation while avoiding blanket traffic restrictions. This study contributes to more effective data-driven urban management and the advancement of sustainable environments. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=human%20mobility" title="human mobility">human mobility</a>, <a href="https://publications.waset.org/abstracts/search?q=air%20pollution" title=" air pollution"> air pollution</a>, <a href="https://publications.waset.org/abstracts/search?q=taxi%20trajectory%20data" title=" taxi trajectory data"> taxi trajectory data</a>, <a href="https://publications.waset.org/abstracts/search?q=trip%20purpose%20inference" title=" trip purpose inference"> trip purpose inference</a>, <a href="https://publications.waset.org/abstracts/search?q=interpretable%20machine%20learning" title=" interpretable machine learning"> interpretable machine learning</a>, <a href="https://publications.waset.org/abstracts/search?q=SHAP" title=" SHAP"> SHAP</a> </p> <a href="https://publications.waset.org/abstracts/198491/spatiotemporal-impacts-of-human-mobility-relating-to-daily-activities-on-air-pollution-based-on-long-term-taxi-trajectories" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/198491.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">10</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">21</span> Path Planning for Unmanned Aerial Vehicles in Constrained Environments for Locust Elimination</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aadiv%20Shah">Aadiv Shah</a>, <a href="https://publications.waset.org/abstracts/search?q=Hari%20Nair"> Hari Nair</a>, <a href="https://publications.waset.org/abstracts/search?q=Vedant%20Mittal"> Vedant Mittal</a>, <a href="https://publications.waset.org/abstracts/search?q=Alice%20Cheeran"> Alice Cheeran</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Present-day agricultural practices such as blanket spraying not only lead to excessive usage of pesticides but also harm the overall crop yield. This paper introduces an algorithm to optimize the traversal of an unmanned aerial vehicle (UAV) in constrained environments. The proposed system focuses on the agricultural application of targeted spraying for locust elimination. Given a satellite image of a farm, target zones that are prone to locust swarm formation are detected through the calculation of the normalized difference vegetation index (NDVI). This is followed by determining the optimal path for traversal of a UAV through these target zones using the proposed algorithm in order to perform pesticide spraying in the most efficient manner possible. Unlike the classic travelling salesman problem involving point-to-point optimization, the proposed algorithm determines an optimal path for multiple regions, independent of its geometry. Finally, the paper explores the idea of implementing reinforcement learning to model complex environmental behaviour and make the path planning mechanism for UAVs agnostic to external environment changes. This system not only presents a solution to the enormous losses incurred due to locust attacks but also an efficient way to automate agricultural practices across the globe in order to improve farmer ergonomics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=locust" title="locust">locust</a>, <a href="https://publications.waset.org/abstracts/search?q=NDVI" title=" NDVI"> NDVI</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=path%20planning" title=" path planning"> path planning</a>, <a href="https://publications.waset.org/abstracts/search?q=reinforcement%20learning" title=" reinforcement learning"> reinforcement learning</a>, <a href="https://publications.waset.org/abstracts/search?q=UAV" title=" UAV"> UAV</a> </p> <a href="https://publications.waset.org/abstracts/138548/path-planning-for-unmanned-aerial-vehicles-in-constrained-environments-for-locust-elimination" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/138548.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">256</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">20</span> Effects of Alternative Opportunities and Compensation on Turnover Intention of Singapore PMET</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Han%20Guan%20Chew">Han Guan Chew</a>, <a href="https://publications.waset.org/abstracts/search?q=Keith%20Yong%20Ngee%20Ng"> Keith Yong Ngee Ng</a>, <a href="https://publications.waset.org/abstracts/search?q=Shan-Wei%20Fan"> Shan-Wei Fan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In Singapore, talent retention is one of the most persistent and real issue companies have to grapple with due to the tight labour market. Being resource-scarce, Singapore depends solely on its talented pool of high quality human resource to sustain its competitive advantage in the global economy. But the complex and multifaceted nature of turnover phenomenon makes the prescription of effective talent retention strategies in such a competitive labour market very challenging, especially when it comes to monetary incentives, companies struggle to answer the question of “How much is enough?” By examining the interactive effects of perceived alternative employment opportunities, annual salary and satisfaction with compensation on the turnover intention of 102 Singapore Professionals, Managers, Executives and Technicians (PMET) through correlation analyses and multiple regressions, important insights into the psyche of the Singapore talent pool can be drawn. It is found that annual salary influence turnover intention indirectly through mediation and moderation effects on PMET’s satisfaction on compensation. PMET are also found to be heavily swayed by better external opportunities. This implies that talent retention strategies should not adopt a purely monetary based blanket approach but rather a comprehensive and holistic one that considers the dynamics of prevailing market conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=employee%20turnover" title="employee turnover">employee turnover</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20performers" title=" high performers"> high performers</a>, <a href="https://publications.waset.org/abstracts/search?q=knowledge%20workers" title=" knowledge workers"> knowledge workers</a>, <a href="https://publications.waset.org/abstracts/search?q=perceived%20alternative%20employment%20opportunities%20salary" title=" perceived alternative employment opportunities salary"> perceived alternative employment opportunities salary</a>, <a href="https://publications.waset.org/abstracts/search?q=satisfaction%20on%20compensation" title=" satisfaction on compensation"> satisfaction on compensation</a>, <a href="https://publications.waset.org/abstracts/search?q=Singapore%20PMET" title=" Singapore PMET"> Singapore PMET</a>, <a href="https://publications.waset.org/abstracts/search?q=talent%20retention" title=" talent retention"> talent retention</a> </p> <a href="https://publications.waset.org/abstracts/45906/effects-of-alternative-opportunities-and-compensation-on-turnover-intention-of-singapore-pmet" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45906.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">286</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">19</span> Study on Hydrogen Isotope Permeability of High Entropy Alloy Coating</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Long%20Wang">Long Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yongjin%20Feng"> Yongjin Feng</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofang%20Luo"> Xiaofang Luo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Tritium permeation through structural materials is a significant issue for fusion demonstration (DEMO) reactor blankets in terms of fuel cycle efficiency and radiological safety. Reduced activation ferritic (RAFM) steel CLF-1 is a prime candidate for the China’s CFETR blanket structural material, facing high permeability of hydrogen isotopes at reactor operational temperature. To confine tritium as much as possible in the reactor, surface modification of the steels including fabrication of tritium permeation barrier (TPB) attracts much attention. As a new alloy system, high entropy alloy (HEA) contains at least five principal elements, each of which ranges from 5 at% to 35 at%. This high mixing effect entitles HEA extraordinary comprehensive performance. So it is attractive to lead HEA into surface alloying for protective use. At present, studies on the hydrogen isotope permeability of HEA coatings is still insufficient and corresponding mechanism isn’t clear. In our study, we prepared three kinds of HEA coatings, including AlCrTaTiZr, (AlCrTaTiZr)N and (AlCrTaTiZr)O. After comprehensive characterization of SEM, XPS, AFM, XRD and TEM, the structure and composition of the HEA coatings were obtained. Deuterium permeation tests were conducted to evaluate the hydrogen isotope permeability of AlCrTaTiZr, (AlCrTaTiZr)N and (AlCrTaTiZr)O HEA coatings. Results proved that the (AlCrTaTiZr)N and (AlCrTaTiZr)O HEA coatings had better hydrogen isotope permeation resistance. Through analyzing and characterizing the hydrogen isotope permeation results of the corroded samples, an internal link between hydrogen isotope permeation behavior and structure of HEA coatings was established. The results provide valuable reference in engineering design of structural and TPB materials for future fusion device. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high%20entropy%20alloy" title="high entropy alloy">high entropy alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20isotope%20permeability" title=" hydrogen isotope permeability"> hydrogen isotope permeability</a>, <a href="https://publications.waset.org/abstracts/search?q=tritium%20permeation%20barrier" title=" tritium permeation barrier"> tritium permeation barrier</a>, <a href="https://publications.waset.org/abstracts/search?q=fusion%20demonstration%20reactor" title=" fusion demonstration reactor"> fusion demonstration reactor</a> </p> <a href="https://publications.waset.org/abstracts/118410/study-on-hydrogen-isotope-permeability-of-high-entropy-alloy-coating" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/118410.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">177</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18</span> Lessons Learned from the Disaster Responses after the Kermanshah Earthquake</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20M.%20Amin%20Hosseini">S. M. Amin Hosseini</a>, <a href="https://publications.waset.org/abstracts/search?q=Oriol%20Pons"> Oriol Pons</a>, <a href="https://publications.waset.org/abstracts/search?q=Albert%20de%20la%20Fuente"> Albert de la Fuente</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An earthquake hit the Kermanshah province, which is located in the west of Iran, on 12th November 2017 at 18:18 UTC (21:48 Iran Standard Time). This earthquake caused several deaths and injured people. In this disaster, substantial homes were destroyed and many homes were damaged. The Iranian government, local authorities, and several non-governmental organizations responded to affected populations’ needs, such as foods, blanket, water, a tent as a temporary shelter, etc. Considerable national groups, including governmental, non-governmental organizations, and people from non-organized groups, directly and indirectly, tried to bring donated goods to the affected populations. However, some of these aids could not satisfy all the affected populations. Moreover, these impossibilities led to waste extensive resources. In this regard, this research study aims to assess the problems of the Kermanshah disaster responses. At the same time, this project searches possible solutions in order to increase emergency management efficiencies for encountering future events. To this end, this study assesses the problem from all beneficiaries´ point of views. In this regard, a survey and a questionnaire were designed for statistical analyses of the responses of people, who were involved in the Kermanshah earthquake recovery program. Additionally, this research study takes into account diverse strategies, which have been applied in other recovery programs, with the Kermanshah case in order to determine similarities and differences. Finally, this study presents possible solutions taken from other recovery programs that could be applied for the Kermanshah emergency responses. However, the results demonstrate that it is required to customize applied strategies based on local conditions and requirements. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=disaster%20response" title="disaster response">disaster response</a>, <a href="https://publications.waset.org/abstracts/search?q=Kermanshah%20earthquake" title=" Kermanshah earthquake"> Kermanshah earthquake</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20disasters" title=" natural disasters"> natural disasters</a>, <a href="https://publications.waset.org/abstracts/search?q=NGOs" title=" NGOs"> NGOs</a> </p> <a href="https://publications.waset.org/abstracts/89461/lessons-learned-from-the-disaster-responses-after-the-kermanshah-earthquake" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89461.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">174</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17</span> Water Re-Use Optimization in a Sugar Platform Biorefinery Using Municipal Solid Waste</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Leo%20Paul%20Vaurs">Leo Paul Vaurs</a>, <a href="https://publications.waset.org/abstracts/search?q=Sonia%20Heaven"> Sonia Heaven</a>, <a href="https://publications.waset.org/abstracts/search?q=Charles%20Banks"> Charles Banks</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Municipal solid waste (MSW) is a virtually unlimited source of lignocellulosic material in the form of a waste paper/cardboard mixture which can be converted into fermentable sugars via cellulolytic enzyme hydrolysis in a biorefinery. The extraction of the lignocellulosic fraction and its preparation, however, are energy and water demanding processes. The waste water generated is a rich organic liquor with a high Chemical Oxygen Demand that can be partially cleaned while generating biogas in an Upflow Anaerobic Sludge Blanket bioreactor and be further re-used in the process. In this work, an experiment was designed to determine the critical contaminant concentrations in water affecting either anaerobic digestion or enzymatic hydrolysis by simulating multiple water re-circulations. It was found that re-using more than 16.5 times the same water could decrease the hydrolysis yield by up to 65 % and led to a complete granules desegregation. Due to the complexity of the water stream, the contaminant(s) responsible for the performance decrease could not be identified but it was suspected to be caused by sodium, potassium, lipid accumulation for the anaerobic digestion (AD) process and heavy metal build-up for enzymatic hydrolysis. The experimental data were incorporated into a Water Pinch technology based model that was used to optimize the water re-utilization in the modelled system to reduce fresh water requirement and wastewater generation while ensuring all processes performed at optimal level. Multiple scenarios were modelled in which sub-process requirements were evaluated in term of importance, operational costs and impact on the CAPEX. The best compromise between water usage, AD and enzymatic hydrolysis yield was determined for each assumed contaminant degradations by anaerobic granules. Results from the model will be used to build the first MSW based biorefinery in the USA. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anaerobic%20digestion" title="anaerobic digestion">anaerobic digestion</a>, <a href="https://publications.waset.org/abstracts/search?q=enzymatic%20hydrolysis" title=" enzymatic hydrolysis"> enzymatic hydrolysis</a>, <a href="https://publications.waset.org/abstracts/search?q=municipal%20solid%20waste" title=" municipal solid waste"> municipal solid waste</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20optimization" title=" water optimization"> water optimization</a> </p> <a href="https://publications.waset.org/abstracts/59926/water-re-use-optimization-in-a-sugar-platform-biorefinery-using-municipal-solid-waste" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59926.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">324</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">16</span> Developing a DNN Model for the Production of Biogas From a Hybrid BO-TPE System in an Anaerobic Wastewater Treatment Plant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hadjer%20Sadoune">Hadjer Sadoune</a>, <a href="https://publications.waset.org/abstracts/search?q=Liza%20Lamini"> Liza Lamini</a>, <a href="https://publications.waset.org/abstracts/search?q=Scherazade%20Krim"> Scherazade Krim</a>, <a href="https://publications.waset.org/abstracts/search?q=Amel%20Djouadi"> Amel Djouadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Rachida%20Rihani"> Rachida Rihani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Deep neural networks are highly regarded for their accuracy in predicting intricate fermentation processes. Their ability to learn from a large amount of datasets through artificial intelligence makes them particularly effective models. The primary obstacle in improving the performance of these models is to carefully choose the suitable hyperparameters, including the neural network architecture (number of hidden layers and hidden units), activation function, optimizer, learning rate, and other relevant factors. This study predicts biogas production from real wastewater treatment plant data using a sophisticated approach: hybrid Bayesian optimization with a tree-structured Parzen estimator (BO-TPE) for an optimised deep neural network (DNN) model. The plant utilizes an Upflow Anaerobic Sludge Blanket (UASB) digester that treats industrial wastewater from soft drinks and breweries. The digester has a working volume of 1574 m3 and a total volume of 1914 m3. Its internal diameter and height were 19 and 7.14 m, respectively. The data preprocessing was conducted with meticulous attention to preserving data quality while avoiding data reduction. Three normalization techniques were applied to the pre-processed data (MinMaxScaler, RobustScaler and StandardScaler) and compared with the Non-Normalized data. The RobustScaler approach has strong predictive ability for estimating the volume of biogas produced. The highest predicted biogas volume was 2236.105 Nm³/d, with coefficient of determination (R2), mean absolute error (MAE), and root mean square error (RMSE) values of 0.712, 164.610, and 223.429, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anaerobic%20digestion" title="anaerobic digestion">anaerobic digestion</a>, <a href="https://publications.waset.org/abstracts/search?q=biogas%20production" title=" biogas production"> biogas production</a>, <a href="https://publications.waset.org/abstracts/search?q=deep%20neural%20network" title=" deep neural network"> deep neural network</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20bo-tpe" title=" hybrid bo-tpe"> hybrid bo-tpe</a>, <a href="https://publications.waset.org/abstracts/search?q=hyperparameters%20tuning" title=" hyperparameters tuning"> hyperparameters tuning</a> </p> <a href="https://publications.waset.org/abstracts/185307/developing-a-dnn-model-for-the-production-of-biogas-from-a-hybrid-bo-tpe-system-in-an-anaerobic-wastewater-treatment-plant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185307.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">15</span> Re-thinking Trust in Refugee Resettlement: A Contextual Perspective and Proposal for Reciprocal Integration</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahfoudha%20Sid%27Elemine">Mahfoudha Sid'Elemine</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The refugee resettlement process profoundly shapes the trajectories of individuals in their new host countries, exerting lasting effects on their long-term integration. Prevailing literature underscores the pivotal role of trust in facilitating successful refugee resettlement. However, this research challenges the notion of trust as universally paramount, contending that its significance is contingent upon variables such as the nature of resettlement programs and the diverse backgrounds and perspectives of refugees. Rather than advocating for a blanket approach to trust-building, this research contends that for certain resettlement programs, trust may prove counterproductive amidst resource constraints and tight service timelines. Moreover, trust may not uniformly emerge as a primary requisite for all refugees, presenting formidable challenges in its establishment. Focusing specifically on resettlement in the United States, this study illustrates how the temporal constraints of resettlement services, coupled with refugees' varied cultural experiences, can impede the cultivation of trust between aid workers and refugees. As an alternative paradigm, this research proposes an approach centered on fostering opportunities for reciprocal engagement, positioning refugees as active contributors within their newfound communities. Embracing reciprocity as the cornerstone of burgeoning relationships promises to fortify refugees' ties with the broader community, bolster their autonomy, and facilitate sustained integration over time. The research draws upon qualitative analyses of in-depth interviews conducted with a subset of resettled refugees, as well as aid workers and volunteers involved in refugee resettlement endeavors within Hampton Roads, Virginia, over the past decade. Through this nuanced examination, the study offers insights into the complexities of trust dynamics in refugee resettlement contexts and advocates for a paradigm shift towards reciprocal integration strategies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Resettlement%20programs" title="Resettlement programs">Resettlement programs</a>, <a href="https://publications.waset.org/abstracts/search?q=Trust%20dynamics" title=" Trust dynamics"> Trust dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=Reciprocity" title=" Reciprocity"> Reciprocity</a>, <a href="https://publications.waset.org/abstracts/search?q=Long-term%20integration" title=" Long-term integration"> Long-term integration</a> </p> <a href="https://publications.waset.org/abstracts/186847/re-thinking-trust-in-refugee-resettlement-a-contextual-perspective-and-proposal-for-reciprocal-integration" class="btn btn-primary btn-sm">Procedia</a> <a 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