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Kundu</title> <meta name="description" content="Search results for: Souvik Kundu"> <meta name="keywords" content="Souvik Kundu"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Souvik Kundu"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 39</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Souvik Kundu</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">39</span> Enhancing the Efficiency of Organic Solar Cells Using Metallic Nanoparticles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sankara%20Rao%20Gollu">Sankara Rao Gollu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ramakant%20Sharma"> Ramakant Sharma</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Srinivas"> G. Srinivas</a>, <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Kundu"> Souvik Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Dipti%20Gupta"> Dipti Gupta</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, bulk heterojunction organic solar cells (BHJ OSCs) based on polymer–fullerene attracted a large research attention due to their numerous advantages such as light weight, easy processability, eco-friendly, low-cost, and capability for large area roll-to-roll manufacturing. BHJ OSCs usually suffer from insufficient light absorption due to restriction on keeping thin ( < 150 nm) photoactive layer because of small exciton diffusion length ( ~ 10 nm) and low charge carrier mobilities. It is thus highly desirable that light absorption as well as charge transport properties are enhanced by alternative methods so as to improve the device efficiency. In this work, therefore, we have focused on the strategy of incorporating metallic nanostructures in the active layer or charge transport layer to enhance the absorption and improve the charge transport. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=organic%20solar%20cell" title="organic solar cell">organic solar cell</a>, <a href="https://publications.waset.org/abstracts/search?q=efficiency" title=" efficiency"> efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=bulk%20heterojunction" title=" bulk heterojunction"> bulk heterojunction</a>, <a href="https://publications.waset.org/abstracts/search?q=polymer-fullerene" title=" polymer-fullerene"> polymer-fullerene</a> </p> <a href="https://publications.waset.org/abstracts/43900/enhancing-the-efficiency-of-organic-solar-cells-using-metallic-nanoparticles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43900.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">397</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> Efficient Utilization of Biomass for Bioenergy in Environmental Control</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Subir%20Kundu">Subir Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Sukhendra%20Singh"> Sukhendra Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Sumedha%20Ojha"> Sumedha Ojha</a>, <a href="https://publications.waset.org/abstracts/search?q=Kanika%20Kundu"> Kanika Kundu </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The continuous decline of petroleum and natural gas reserves and non linear rise of oil price has brought about a realisation of the need for a change in our perpetual dependence on the fossil fuel. A day to day increased consumption of crude and petroleum products has made a considerable impact on our foreign exchange reserves. Hence, an alternate resource for the conversion of energy (both liquid and gas) is essential for the substitution of conventional fuels. Biomass is the alternate solution for the present scenario. Biomass can be converted into both liquid as well as gaseous fuels and other feedstocks for the industries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioenergy" title="bioenergy">bioenergy</a>, <a href="https://publications.waset.org/abstracts/search?q=biomass%20conversion" title=" biomass conversion"> biomass conversion</a>, <a href="https://publications.waset.org/abstracts/search?q=biorefining" title=" biorefining"> biorefining</a>, <a href="https://publications.waset.org/abstracts/search?q=efficient%20utilisation%20of%20night%20soil" title=" efficient utilisation of night soil"> efficient utilisation of night soil</a> </p> <a href="https://publications.waset.org/abstracts/20527/efficient-utilization-of-biomass-for-bioenergy-in-environmental-control" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20527.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">406</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> Incorporation of Copper for Performance Enhancement in Metal-Oxides Resistive Switching Device and Its Potential Electronic Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=B.%20Pavan%20Kumar%20Reddy">B. Pavan Kumar Reddy</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Michael%20Preetam%20Raj"> P. Michael Preetam Raj</a>, <a href="https://publications.waset.org/abstracts/search?q=Souri%20Banerjee"> Souri Banerjee</a>, <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Kundu"> Souvik Kundu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, the fabrication and characterization of copper-doped zinc oxide (Cu:ZnO) based memristor devices with aluminum (Al) and indium tin oxide (ITO) metal electrodes are reported. The thin films of Cu:ZnO was synthesized using low-cost and low-temperature chemical process. The Cu:ZnO was then deposited onto ITO bottom electrodes using spin-coater technique, whereas the top electrode Al was deposited utilizing physical vapor evaporation technique. Ellipsometer was employed in order to measure the Cu:ZnO thickness and it was found to be 50 nm. Several surface and materials characterization techniques were used to study the thin-film properties of Cu:ZnO. To ascertain the efficacy of Cu:ZnO for memristor applications, electrical characterizations such as current-voltage (I-V), data retention and endurance were obtained, all being the critical parameters for next-generation memory. The I-V characteristic exhibits switching behavior with asymmetrical hysteresis loops. This work imputes the resistance switching to the positional drift of oxygen vacancies associated with respect to the Al/Cu:ZnO junction. Further, a non-linear curve fitting regression techniques were utilized to determine the equivalent circuit for the fabricated Cu:ZnO memristors. Efforts were also devoted in order to establish its potentiality for different electronic applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=copper%20doped" title="copper doped">copper doped</a>, <a href="https://publications.waset.org/abstracts/search?q=metal-oxides" title=" metal-oxides"> metal-oxides</a>, <a href="https://publications.waset.org/abstracts/search?q=oxygen%20vacancies" title=" oxygen vacancies"> oxygen vacancies</a>, <a href="https://publications.waset.org/abstracts/search?q=resistive%20switching" title=" resistive switching"> resistive switching</a> </p> <a href="https://publications.waset.org/abstracts/89280/incorporation-of-copper-for-performance-enhancement-in-metal-oxides-resistive-switching-device-and-its-potential-electronic-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89280.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">162</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> Oxide Based Memristor and Its Potential Application in Analog-Digital Electronics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=P.%20Michael%20Preetam%20Raj">P. Michael Preetam Raj</a>, <a href="https://publications.waset.org/abstracts/search?q=Souri%20Banerjee"> Souri Banerjee</a>, <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Kundu"> Souvik Kundu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Oxide based memristors were fabricated in order to establish its potential applications in analog/digital electronics. BaTiO₃-BiFeO₃ (BT-BFO) was employed as an active material, whereas platinum (Pt) and Nb-doped SrTiO₃ (Nb:STO) were served as a top and bottom electrodes, respectively. Piezoelectric force microscopy (PFM) was utilized to present the ferroelectricity and repeatable polarization inversion in the BT-BFO, demonstrating its effectiveness for resistive switching. The fabricated memristors exhibited excellent electrical characteristics, such as hysteresis current-voltage (I-V), high on/off ratio, high retention time, cyclic endurance, and low operating voltages. The band-alignment between the active material BT-BFO and the substrate Nb:STO was experimentally investigated using X-Ray photoelectron spectroscopy, and it attributed to staggered heterojunction alignment. An energy band diagram was proposed in order to understand the electrical transport in BT-BFO/Nb:STO heterojunction. It was identified that the I-V curves of these memristors have several discontinuities. Curve fitting technique was utilized to analyse the I-V characteristic, and the obtained I-V equations were found to be parabolic. Utilizing this analysis, a non-linear BT-BFO memristors equivalent circuit model was developed. Interestingly, the obtained equivalent circuit of the BT-BFO memristors mimics the identical electrical performance, those obtained in the fabricated devices. Based on the developed equivalent circuit, a finite state machine (FSM) design was proposed. Efforts were devoted to fabricate the same FSM, and the results were well matched with those in the simulated FSM devices. Its multilevel noise filtering and immunity to external noise characteristics were also studied. Further, the feature of variable negative resistance was established by controlling the current through the memristor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=band%20alignment" title="band alignment">band alignment</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20state%20machine" title=" finite state machine"> finite state machine</a>, <a href="https://publications.waset.org/abstracts/search?q=polarization%20inversion" title=" polarization inversion"> polarization inversion</a>, <a href="https://publications.waset.org/abstracts/search?q=resistive%20switching" title=" resistive switching"> resistive switching</a> </p> <a href="https://publications.waset.org/abstracts/89283/oxide-based-memristor-and-its-potential-application-in-analog-digital-electronics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89283.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">133</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> Highly Responsive p-NiO/n-rGO Heterojunction Based Self-Powered UV Photodetectors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=P.%20Joshna">P. Joshna</a>, <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Kundu"> Souvik Kundu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Detection of ultraviolet (UV) radiation is very important as it has exhibited a profound influence on humankind and other existences, including military equipment. In this work, a self-powered UV photodetector was reported based on oxides heterojunctions. The thin films of p-type nickel oxide (NiO) and n-type reduced graphene oxide (rGO) were used for the formation of p-n heterojunction. Low-Cost and low-temperature chemical synthesis was utilized to prepare the oxides, and the spin coating technique was employed to deposit those onto indium doped tin oxide (ITO) coated glass substrates. The top electrode platinum was deposited utilizing physical vapor evaporation technique. NiO offers strong UV absorption with high hole mobility, and rGO prevents the recombination rate by separating electrons out from the photogenerated carriers. Several structural characterizations such as x-ray diffraction, atomic force microscope, scanning electron microscope were used to study the materials crystallinity, microstructures, and surface roughness. On one side, the oxides were found to be polycrystalline in nature, and no secondary phases were present. On the other side, surface roughness was found to be low with no pit holes, which depicts the formation of high-quality oxides thin films. Whereas, x-ray photoelectron spectroscopy was employed to study the chemical compositions and oxidation structures. The electrical characterizations such as current-voltage and current response were also performed on the device to determine the responsivity, detectivity, and external quantum efficiency under dark and UV illumination. This p-n heterojunction device offered faster photoresponse and high on-off ratio under 365 nm UV light illumination of zero bias. The device based on the proposed architecture shows the efficacy of the oxides heterojunction for efficient UV photodetection under zero bias, which opens up a new path towards the development of self-powered photodetector for environment and health monitoring sector. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chemical%20synthesis" title="chemical synthesis">chemical synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=oxides" title=" oxides"> oxides</a>, <a href="https://publications.waset.org/abstracts/search?q=photodetectors" title=" photodetectors"> photodetectors</a>, <a href="https://publications.waset.org/abstracts/search?q=spin%20coating" title=" spin coating"> spin coating</a> </p> <a href="https://publications.waset.org/abstracts/109531/highly-responsive-p-nion-rgo-heterojunction-based-self-powered-uv-photodetectors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/109531.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">123</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> Thermodynamic Optimization of an R744 Based Transcritical Refrigeration System with Dedicated Mechanical Subcooling Cycle</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mihir%20Mouchum%20Hazarika">Mihir Mouchum Hazarika</a>, <a href="https://publications.waset.org/abstracts/search?q=Maddali%20Ramgopal"> Maddali Ramgopal</a>, <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Bhattacharyya"> Souvik Bhattacharyya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The thermodynamic analysis shows that the performance of the R744 based transcritical refrigeration cycle drops drastically for higher ambient temperatures. This is due to the peculiar s-shape of the isotherm in the supercritical region. However, subcooling of the refrigerant at the gas cooler exit enhances the performance of the R744 based system. The present study is carried out to analyze the R744 based transcritical system with dedicated mechanical subcooling cycle. Based on this proposed cycle, the thermodynamic analysis is performed, and optimum operating parameters are determined. The amount of subcooling and the pressure ratio in the subcooling cycle are the parameters which are needed to be optimized to extract the maximum COP from this proposed cycle. It is expected that this study will be helpful in implementing the dedicated subcooling cycle with R744 based transcritical system to improve the performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=optimization" title="optimization">optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=R744" title=" R744"> R744</a>, <a href="https://publications.waset.org/abstracts/search?q=subcooling" title=" subcooling"> subcooling</a>, <a href="https://publications.waset.org/abstracts/search?q=transcritical" title=" transcritical"> transcritical</a> </p> <a href="https://publications.waset.org/abstracts/65947/thermodynamic-optimization-of-an-r744-based-transcritical-refrigeration-system-with-dedicated-mechanical-subcooling-cycle" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65947.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">306</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> Aperiodic and Asymmetric Fibonacci Quasicrystals: Next Big Future in Quantum Computation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jatindranath%20Gain">Jatindranath Gain</a>, <a href="https://publications.waset.org/abstracts/search?q=Madhumita%20DasSarkar"> Madhumita DasSarkar</a>, <a href="https://publications.waset.org/abstracts/search?q=Sudakshina%20Kundu"> Sudakshina Kundu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Quantum information is stored in states with multiple quasiparticles, which have a topological degeneracy. Topological quantum computation is concerned with two-dimensional many body systems that support excitations. Anyons are elementary building block of quantum computations. When anyons tunneling in a double-layer system can transition to an exotic non-Abelian state and produce Fibonacci anyons, which are powerful enough for universal topological quantum computation (TQC).Here the exotic behavior of Fibonacci Superlattice is studied by using analytical transfer matrix methods and hence Fibonacci anyons. This Fibonacci anyons can build a quantum computer which is very emerging and exciting field today’s in Nanophotonics and quantum computation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=quantum%20computing" title="quantum computing">quantum computing</a>, <a href="https://publications.waset.org/abstracts/search?q=quasicrystals" title=" quasicrystals"> quasicrystals</a>, <a href="https://publications.waset.org/abstracts/search?q=Multiple%20Quantum%20wells%20%28MQWs%29" title=" Multiple Quantum wells (MQWs)"> Multiple Quantum wells (MQWs)</a>, <a href="https://publications.waset.org/abstracts/search?q=transfer%20matrix%20method" title=" transfer matrix method"> transfer matrix method</a>, <a href="https://publications.waset.org/abstracts/search?q=fibonacci%20anyons" title=" fibonacci anyons"> fibonacci anyons</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20hall%20effect" title=" quantum hall effect"> quantum hall effect</a>, <a href="https://publications.waset.org/abstracts/search?q=nanophotonics" title=" nanophotonics"> nanophotonics</a> </p> <a href="https://publications.waset.org/abstracts/41369/aperiodic-and-asymmetric-fibonacci-quasicrystals-next-big-future-in-quantum-computation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41369.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">390</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> Impact of Urbanization on the Performance of Higher Education Institutions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chandan%20Jha">Chandan Jha</a>, <a href="https://publications.waset.org/abstracts/search?q=Amit%20Sachan"> Amit Sachan</a>, <a href="https://publications.waset.org/abstracts/search?q=Arnab%20Adhikari"> Arnab Adhikari</a>, <a href="https://publications.waset.org/abstracts/search?q=Sayantan%20Kundu"> Sayantan Kundu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this study is to evaluate the performance of Higher Education Institutions (HEIs) of India and examine the impact of urbanization on the performance of HEIs. In this study, the Data Envelopment Analysis (DEA) has been used, and the authors have collected the required data related to performance measures from the National Institutional Ranking Framework web portal. In this study, the authors have evaluated the performance of HEIs by using two different DEA models. In the first model, geographic locations of the institutes have been categorized into two categories, i.e., Urban Vs. Non-Urban. However, in the second model, these geographic locations have been classified into three categories, i.e., Urban, Semi-Urban, Non-Urban. The findings of this study provide several insights related to the degree of urbanization and the performance of HEIs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DEA" title="DEA">DEA</a>, <a href="https://publications.waset.org/abstracts/search?q=higher%20education" title=" higher education"> higher education</a>, <a href="https://publications.waset.org/abstracts/search?q=performance%20evaluation" title=" performance evaluation"> performance evaluation</a>, <a href="https://publications.waset.org/abstracts/search?q=urbanization" title=" urbanization"> urbanization</a> </p> <a href="https://publications.waset.org/abstracts/120160/impact-of-urbanization-on-the-performance-of-higher-education-institutions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120160.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">215</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> Synthesis and Characterization of Zr and V Co-Doped BaTiO₃ Ceramic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kanta%20Maan%20Sangwan">Kanta Maan Sangwan</a>, <a href="https://publications.waset.org/abstracts/search?q=Neetu%20Ahlawat"> Neetu Ahlawat</a>, <a href="https://publications.waset.org/abstracts/search?q=Rajender%20Singh%20Kundu"> Rajender Singh Kundu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> BaZrTiO3 ceramics having high dielectric constant and low dielectric loss are interesting material for being used as commercial capacitor applications. BZT (BaZrTiO3) has attracted attentions for their many applications for the microwave technology as the doping of Zr4+ on Ti4+ has advantage to the stability of the system. In the present work, co-doping of Zr and V with BaTiO3 ceramics was synthesized by the conventional solid state reaction technique and sintered at 1200 K for 6 hours, and their structural and ferroelectric properties were studied. The XRD (x-ray diffraction) pattern of BZT (BaZrTiO3) ceramics shows that the crystalline sample is single phase tetragonal structure with P4mm space group. The result revealed that Zr ion enters the unit cell maintaining the perovskite structure of BZT ceramics and the impedance spectroscopy of the sample performed in selected frequency and temperature range. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ferroelectric" title="ferroelectric">ferroelectric</a>, <a href="https://publications.waset.org/abstracts/search?q=impedance%20spectroscopy" title=" impedance spectroscopy"> impedance spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=space%20group" title=" space group"> space group</a>, <a href="https://publications.waset.org/abstracts/search?q=tetragonal" title=" tetragonal"> tetragonal</a> </p> <a href="https://publications.waset.org/abstracts/79091/synthesis-and-characterization-of-zr-and-v-co-doped-batio3-ceramic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79091.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">205</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> Augmented Reality Sandbox and Constructivist Approach for Geoscience Teaching and Learning </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Nawaz">Muhammad Nawaz</a>, <a href="https://publications.waset.org/abstracts/search?q=Sandeep%20N.%20Kundu"> Sandeep N. Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Farha%20Sattar"> Farha Sattar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Augmented reality sandbox adds new dimensions to education and learning process. It can be a core component of geoscience teaching and learning to understand the geographic contexts and landform processes. Augmented reality sandbox is a useful tool not only to create an interactive learning environment through spatial visualization but also it can provide an active learning experience to students and enhances the cognition process of learning. Augmented reality sandbox can be used as an interactive learning tool to teach geomorphic and landform processes. This article explains the augmented reality sandbox and the constructivism approach for geoscience teaching and learning, and endeavours to explore the ways to teach the geographic processes using the three-dimensional digital environment for the deep learning of the geoscience concepts interactively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=augmented%20reality%20sandbox" title="augmented reality sandbox">augmented reality sandbox</a>, <a href="https://publications.waset.org/abstracts/search?q=constructivism" title=" constructivism"> constructivism</a>, <a href="https://publications.waset.org/abstracts/search?q=deep%20learning" title=" deep learning"> deep learning</a>, <a href="https://publications.waset.org/abstracts/search?q=geoscience" title=" geoscience"> geoscience</a> </p> <a href="https://publications.waset.org/abstracts/69803/augmented-reality-sandbox-and-constructivist-approach-for-geoscience-teaching-and-learning" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69803.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">402</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> On Generalized Cumulative Past Inaccuracy Measure for Marginal and Conditional Lifetimes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amit%20Ghosh">Amit Ghosh</a>, <a href="https://publications.waset.org/abstracts/search?q=Chanchal%20Kundu"> Chanchal Kundu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recently, the notion of past cumulative inaccuracy (CPI) measure has been proposed in the literature as a generalization of cumulative past entropy (CPE) in univariate as well as bivariate setup. In this paper, we introduce the notion of CPI of order α (alpha) and study the proposed measure for conditionally specified models of two components failed at different time instants called generalized conditional CPI (GCCPI). We provide some bounds using usual stochastic order and investigate several properties of GCCPI. The effect of monotone transformation on this proposed measure has also been examined. Furthermore, we characterize some bivariate distributions under the assumption of conditional proportional reversed hazard rate model. Moreover, the role of GCCPI in reliability modeling has also been investigated for a real-life problem. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cumulative%20past%20inaccuracy" title="cumulative past inaccuracy">cumulative past inaccuracy</a>, <a href="https://publications.waset.org/abstracts/search?q=marginal%20and%20conditional%20past%20lifetimes" title=" marginal and conditional past lifetimes"> marginal and conditional past lifetimes</a>, <a href="https://publications.waset.org/abstracts/search?q=conditional%20proportional%20reversed%20hazard%20rate%20model" title=" conditional proportional reversed hazard rate model"> conditional proportional reversed hazard rate model</a>, <a href="https://publications.waset.org/abstracts/search?q=usual%20stochastic%20order" title=" usual stochastic order"> usual stochastic order</a> </p> <a href="https://publications.waset.org/abstracts/79608/on-generalized-cumulative-past-inaccuracy-measure-for-marginal-and-conditional-lifetimes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79608.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">253</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> Tuberculous Osteomyelitis Mimicking Tumours and Tumour-Like Lesions of Bone: Clinico-Radiologic Study of 22 Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Parveen%20Kundu">Parveen Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Zile%20Singh"> Zile Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Kunika%20Kundu"> Kunika Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Swaran%20Kaur"> Swaran Kaur</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Context: Tuberculous osteomyelitis is a relatively uncommon condition that can present with various clinical and radiological features, often mimicking bone tumors or tumor-like lesions. In endemic countries like India, tuberculosis should be considered as a potential differential diagnosis for lytic bone lesions. This study aimed to highlight the different presentations of tuberculosis that can mimic tumors or tumor-like lesions in bone and emphasize the successful outcome of antitubercular therapy (ATT) in treating these cases. Research Aim: The main objective of this research was to explore the varied presentations of tuberculosis that mimic bone tumors or tumor-like lesions both clinically and radiologically, focusing on different bones. The study aimed to raise awareness among clinicians about this possibility and highlight the importance of histopathological confirmation before initiating treatment for lytic bone lesions. Methodology: This study utilized a retrospective review of 22 patients with suspected lytic bone lesions, who were subsequently diagnosed with tuberculous osteomyelitis through histopathological examination. The cases were collected over a period of ten years. Eleven cases required curettage for extensive lesions with sequestrations, while all 22 patients received 12 months of antitubercular therapy. Findings: The study included 14 male and 8 female patients, ranging in age from 3 to 61 years, with an average age of 22.05. The clinical and radiological presentations varied, with examples including bone cysts in the metaphyseal area of long bones, lesions resembling chondroblastomas, giant cell tumors, and osteoid osteoma, as well as multifocal lytic lesions resembling metastasis or multiple myeloma. One patient had lesions in both the clavicle and hand. Lesions mimicking chondromas were also observed in the phalanges of the hand and foot metatarsal. All patients showed resolution of the lesions and no residual disability following ATT. Theoretical Importance: This study highlights the importance of considering tuberculosis as a potential differential diagnosis for lytic bone lesions, particularly in endemic regions. It emphasizes the need for histopathological confirmation to accurately diagnose tuberculous osteomyelitis, as this is considered the gold standard. Data Collection and Analysis Procedures: Data for this study were collected retrospectively from medical records and radiological images of the 22 patients. The cases were analyzed based on clinical presentation, radiological findings, and histopathological confirmation. The outcomes of antitubercular therapy were also assessed. The data were summarized and presented descriptively. Question Addressed: This study aimed to address the question of how tuberculosis can mimic different bone tumors and tumor-like lesions clinically and radiologically. It also aimed to assess the successful outcome of antitubercular therapy in treating these cases. Conclusion: Tuberculous osteomyelitis can present with varied clinical and radiological features, often mimicking bone tumors or tumor-like lesions. Clinicians should consider tuberculosis as a potential diagnosis for lytic bone lesions, especially in endemic areas. Histopathological confirmation is essential for accurate diagnosis. Antitubercular therapy is an effective treatment for tuberculous osteomyelitis, leading to the resolution of the lesions with no residual disability. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tuberculosis" title="tuberculosis">tuberculosis</a>, <a href="https://publications.waset.org/abstracts/search?q=tumor" title=" tumor"> tumor</a>, <a href="https://publications.waset.org/abstracts/search?q=curettage" title=" curettage"> curettage</a>, <a href="https://publications.waset.org/abstracts/search?q=bone" title=" bone"> bone</a> </p> <a href="https://publications.waset.org/abstracts/169476/tuberculous-osteomyelitis-mimicking-tumours-and-tumour-like-lesions-of-bone-clinico-radiologic-study-of-22-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169476.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">90</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> Metallurgical Analysis of Surface Defect in Telescopic Front Fork</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Das">Souvik Das</a>, <a href="https://publications.waset.org/abstracts/search?q=Janak%20Lal"> Janak Lal</a>, <a href="https://publications.waset.org/abstracts/search?q=Arthita%20Dey"> Arthita Dey</a>, <a href="https://publications.waset.org/abstracts/search?q=Goutam%20Mukhopadhyay"> Goutam Mukhopadhyay</a>, <a href="https://publications.waset.org/abstracts/search?q=Sandip%20Bhattacharya"> Sandip Bhattacharya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Telescopic Front Fork (TFF) used in two wheelers, mainly motorcycle, is made from high strength steel, and is manufactured by high frequency induction welding process wherein hot rolled and pickled coils are used as input raw material for rolling of hollow tubes followed by heat treatment, surface treatment, cold drawing, tempering, etc. The final application demands superior quality TFF tubes w.r.t. surface finish and dimensional tolerances. This paper presents the investigation of two different types of failure of fork during operation. The investigation consists of visual inspection, chemical analysis, characterization of microstructure, and energy dispersive spectroscopy. In this paper, comprehensive investigations of two failed tube samples were investigated. In case of Sample #1, the result revealed that there was a pre-existing crack, known as hook crack, which leads to the cracking of the tube. Metallographic examination exhibited that during field operation the pre-existing hook crack was surfaced out leading to crack in the pipe. In case of Sample #2, presence of internal oxidation with decarburised grains inside the material indicates origin of the defect from slab stage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=telescopic%20front%20fork" title="telescopic front fork">telescopic front fork</a>, <a href="https://publications.waset.org/abstracts/search?q=induction%20welding" title=" induction welding"> induction welding</a>, <a href="https://publications.waset.org/abstracts/search?q=hook%20crack" title=" hook crack"> hook crack</a>, <a href="https://publications.waset.org/abstracts/search?q=internal%20oxidation" title=" internal oxidation"> internal oxidation</a> </p> <a href="https://publications.waset.org/abstracts/96121/metallurgical-analysis-of-surface-defect-in-telescopic-front-fork" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96121.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">131</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> Amelioration of Arsenic and Mercury Induced Vasoconstriction by Eugenol, Linalool and Carvone </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Swati%20Kundu">Swati Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Seemi%20Farhat%20Basir"> Seemi Farhat Basir</a>, <a href="https://publications.waset.org/abstracts/search?q=Luqman%20A.%20Khan"> Luqman A. Khan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Acute and chronic exposure to arsenic and mercury is known to produce vasoconstriction. Pathways involved in this hypercontraction and their relative contribution are not understood. In this study, we measure agonist-induced contraction of isolated rat aorta exposed to arsenic and mercury aorta and delineate pathways mediating this effect. PE-induced hypercontraction of 37% and 32% was obtained with 25 µM As(III) and 6 nM Hg(II), respectively. Isometric contraction measurements in the presence of apocynin, verapamil and sodium nitroprusside indicates that the major cause of increased contraction is reactive oxygen species and depletion of nitric oxide. Calcium influx plays a minor role in both arsenic and mercury caused hypercontraction. In the unexposed aorta, eugenol causes relaxation by inhibiting ROS and elevating NO, linalool by blocking voltage dependent calcium channel (VDCC) and elevating NO, and carvone by blocking calcium influx through VDDC. Since arsenic and mercury caused hypercontraction is mediated by increased ROS and depletion of nitric oxide, we hypothesize that molecules which neutralize ROS or elevate NO will be better ameliorators. In line with this argument, we find eugenol to be the best ameliorator of arsenic and mercury hypercontraction followed by linalool and carvone. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carvone" title="carvone">carvone</a>, <a href="https://publications.waset.org/abstracts/search?q=eugenol" title=" eugenol"> eugenol</a>, <a href="https://publications.waset.org/abstracts/search?q=linalool" title=" linalool"> linalool</a>, <a href="https://publications.waset.org/abstracts/search?q=mercury" title=" mercury"> mercury</a> </p> <a href="https://publications.waset.org/abstracts/37358/amelioration-of-arsenic-and-mercury-induced-vasoconstriction-by-eugenol-linalool-and-carvone" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37358.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">327</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> Lean Thinking and E-Commerce as New Opportunities to Improve Partnership in Supply Chain of Construction Industries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kaustav%20Kundu">Kaustav Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Alberto%20Portioli%20Staudacher"> Alberto Portioli Staudacher</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Construction industry plays a vital role in the economy of the world. But due to high uncertainty and variability in the industry, its performance is not as efficient in terms of quality, lead times, productivity and costs as of other industries. Moreover, there are continuous conflicts among the different actors in the construction supply chains in terms of profit sharing. Previous studies suggested partnership as an important approach to promote cooperation among the different actors in the construction supply chains and thereby it improves the overall performance. Construction practitioners tried to focus on partnership which can enhance the performance of construction supply chains but they are not fully aware of different approaches and techniques for improving partnership. In this research, a systematic review on partnership in relation to construction supply chains is carried out to understand different elements influencing the partnership. The research development of this domain is analyzed by reviewing selected articles published from 1996 to 2015. Based on the papers, three major elements influencing partnership in construction supply chains are identified: “Lean approach”, “Relationship building” and “E-commerce applications”. This study analyses the contributions in the areas within each element and provides suggestions for future developments of partnership in construction supply chains. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=partnership" title="partnership">partnership</a>, <a href="https://publications.waset.org/abstracts/search?q=construction" title=" construction"> construction</a>, <a href="https://publications.waset.org/abstracts/search?q=lean" title=" lean"> lean</a>, <a href="https://publications.waset.org/abstracts/search?q=SCM" title=" SCM"> SCM</a>, <a href="https://publications.waset.org/abstracts/search?q=supply%20chain%20management" title=" supply chain management"> supply chain management</a> </p> <a href="https://publications.waset.org/abstracts/32251/lean-thinking-and-e-commerce-as-new-opportunities-to-improve-partnership-in-supply-chain-of-construction-industries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32251.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">434</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> A Bivariate Inverse Generalized Exponential Distribution and Its Applications in Dependent Competing Risks Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatemah%20A.%20Alqallaf">Fatemah A. Alqallaf</a>, <a href="https://publications.waset.org/abstracts/search?q=Debasis%20Kundu"> Debasis Kundu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this paper is to introduce a bivariate inverse generalized exponential distribution which has a singular component. The proposed bivariate distribution can be used when the marginals have heavy-tailed distributions, and they have non-monotone hazard functions. Due to the presence of the singular component, it can be used quite effectively when there are ties in the data. Since it has four parameters, it is a very flexible bivariate distribution, and it can be used quite effectively for analyzing various bivariate data sets. Several dependency properties and dependency measures have been obtained. The maximum likelihood estimators cannot be obtained in closed form, and it involves solving a four-dimensional optimization problem. To avoid that, we have proposed to use an EM algorithm, and it involves solving only one non-linear equation at each `E'-step. Hence, the implementation of the proposed EM algorithm is very straight forward in practice. Extensive simulation experiments and the analysis of one data set have been performed. We have observed that the proposed bivariate inverse generalized exponential distribution can be used for modeling dependent competing risks data. One data set has been analyzed to show the effectiveness of the proposed model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Block%20and%20Basu%20bivariate%20distributions" title="Block and Basu bivariate distributions">Block and Basu bivariate distributions</a>, <a href="https://publications.waset.org/abstracts/search?q=competing%20risks" title=" competing risks"> competing risks</a>, <a href="https://publications.waset.org/abstracts/search?q=EM%20algorithm" title=" EM algorithm"> EM algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=Marshall-Olkin%20bivariate%20exponential%20distribution" title=" Marshall-Olkin bivariate exponential distribution"> Marshall-Olkin bivariate exponential distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20likelihood%20estimators" title=" maximum likelihood estimators"> maximum likelihood estimators</a> </p> <a href="https://publications.waset.org/abstracts/122524/a-bivariate-inverse-generalized-exponential-distribution-and-its-applications-in-dependent-competing-risks-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/122524.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">143</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">23</span> Failure Analysis of Low Relaxation Prestressed High Carbon Steel Wire During Drawing Operation: A Metallurgical Investigation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Das">Souvik Das</a>, <a href="https://publications.waset.org/abstracts/search?q=Sandip%20%20Bhattacharya"> Sandip Bhattacharya</a>, <a href="https://publications.waset.org/abstracts/search?q=Goutam%20Mukhopadhyay"> Goutam Mukhopadhyay</a>, <a href="https://publications.waset.org/abstracts/search?q=Manashi%20Adhikary"> Manashi Adhikary</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wires breakages during cold drawing are a complex phenomenon; wire breakages may be induced by improper wire-rod quality, inappropriate heat-treated microstructure, and/or lubrication breakdown on the wire surface. A comprehensive metallurgical investigation of failed/broken wire samples is therefore essential for understanding the origin of failure. Frequent breakage of wires during drawing is a matter of serious concern to the wire drawers as it erodes their already slim margins through reduced productivity and loss in yield. The present paper highlights the failure investigation of wires of Low Relaxation Prestressed High Carbon grade during cold drawing due to entrapment of hard constituents detached from the roller entry guide during rolling operations. The hardness measurement of this entrapped location indicates 54.9 Rockwell Hardness as against the rest portion 33.4 Rockwell Hardness. The microstructure chemical analysis and X-ray mapping analysis data of the entrapment location confirmed complex chromium carbide originated from D2-steel used in entry guide during the rolling process. Since the harder entrapped phase could not be deformed in the same manner as the parent phase, the failure of the wire rod occurs during hot rolling. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=LRPC" title="LRPC">LRPC</a>, <a href="https://publications.waset.org/abstracts/search?q=D2-steel" title=" D2-steel"> D2-steel</a>, <a href="https://publications.waset.org/abstracts/search?q=chromium%20carbide" title=" chromium carbide"> chromium carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=roller%20guide" title=" roller guide"> roller guide</a> </p> <a href="https://publications.waset.org/abstracts/106416/failure-analysis-of-low-relaxation-prestressed-high-carbon-steel-wire-during-drawing-operation-a-metallurgical-investigation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106416.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">159</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> Inference for Compound Truncated Poisson Lognormal Model with Application to Maximum Precipitation Data</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Z.%20Raqab">M. Z. Raqab</a>, <a href="https://publications.waset.org/abstracts/search?q=Debasis%20Kundu"> Debasis Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Meraou"> M. A. Meraou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we have analyzed maximum precipitation data during a particular period of time obtained from different stations in the Global Historical Climatological Network of the USA. One important point to mention is that some stations are shut down on certain days for some reason or the other. Hence, the maximum values are recorded by excluding those readings. It is assumed that the number of stations that operate follows zero-truncated Poisson random variables, and the daily precipitation follows a lognormal random variable. We call this model a compound truncated Poisson lognormal model. The proposed model has three unknown parameters, and it can take a variety of shapes. The maximum likelihood estimators can be obtained quite conveniently using Expectation-Maximization (EM) algorithm. Approximate maximum likelihood estimators are also derived. The associated confidence intervals also can be obtained from the observed Fisher information matrix. Simulation results have been performed to check the performance of the EM algorithm, and it is observed that the EM algorithm works quite well in this case. When we analyze the precipitation data set using the proposed model, it is observed that the proposed model provides a better fit than some of the existing models. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=compound%20Poisson%20lognormal%20distribution" title="compound Poisson lognormal distribution">compound Poisson lognormal distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=EM%20algorithm" title=" EM algorithm"> EM algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20likelihood%20estimation" title=" maximum likelihood estimation"> maximum likelihood estimation</a>, <a href="https://publications.waset.org/abstracts/search?q=approximate%20maximum%20likelihood%20estimation" title=" approximate maximum likelihood estimation"> approximate maximum likelihood estimation</a>, <a href="https://publications.waset.org/abstracts/search?q=Fisher%20information" title=" Fisher information"> Fisher information</a>, <a href="https://publications.waset.org/abstracts/search?q=skew%20distribution" title=" skew distribution"> skew distribution</a> </p> <a href="https://publications.waset.org/abstracts/156020/inference-for-compound-truncated-poisson-lognormal-model-with-application-to-maximum-precipitation-data" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/156020.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">108</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> Curcumin and Methotrexate Loaded Montmollilite Clay for Sustained Oral Drug Delivery Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Subrata%20Kar">Subrata Kar</a>, <a href="https://publications.waset.org/abstracts/search?q=Banani%20Kundu"> Banani Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Papiya%20Nandy"> Papiya Nandy</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruma%20Basu"> Ruma Basu</a>, <a href="https://publications.waset.org/abstracts/search?q=Sukhen%20Das"> Sukhen Das</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Natural montmorilollite clay is a common ingredient in pharmaceutical products, both as excipients and active support; hence considered as suitable candidate for Drug Delivery System. In this work, cationic detergent CTAB is used to increase the interlayer spacing of Na+-Montmoriollite clay to intercalate curcumin and methotrexate. Methotrexate is a folic acid antagonist, anti-proliferative and immunosuppressive agent; while curcumin is a bioactive constituent of rhizomes of Curcuma longa, possessing remarkable chemo-preventive and anti-inflammatory properties. The resultant inorganic-organic hybrids are characterized by X-ray diffraction (XRD), Infrared spectroscopy (FTIR) and Thermo Gravimetric Analysis (TGA) to confirm successful intercalation of curcumin and Methotrexate within clay layers. Pharmaceutical investigation of the hybrids is explored by studying the drug loading (%), encapsulation efficiency and release kinetics. Finally in-vitro studies are performed using cancer cells to find the effect of released curcumin to improve the sensitivity of clay bound methotrexate to ameliorate cell death compared to their effectiveness when used without the inorganic aluminosilicate vehicle. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=montmorillonite" title="montmorillonite">montmorillonite</a>, <a href="https://publications.waset.org/abstracts/search?q=methotrexate" title=" methotrexate"> methotrexate</a>, <a href="https://publications.waset.org/abstracts/search?q=curcumin" title=" curcumin"> curcumin</a>, <a href="https://publications.waset.org/abstracts/search?q=loading%20efficiency" title=" loading efficiency"> loading efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=release%20kinetics" title=" release kinetics"> release kinetics</a>, <a href="https://publications.waset.org/abstracts/search?q=anticancer%20activity" title=" anticancer activity"> anticancer activity</a> </p> <a href="https://publications.waset.org/abstracts/42753/curcumin-and-methotrexate-loaded-montmollilite-clay-for-sustained-oral-drug-delivery-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42753.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">515</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> Computation of Flood and Drought Years over the North-West Himalayan Region Using Indian Meteorological Department Rainfall Data</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sudip%20Kumar%20Kundu">Sudip Kumar Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Charu%20Singh"> Charu Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The climatic condition over Indian region is highly dependent on monsoon. India receives maximum amount of rainfall during southwest monsoon. Indian economy is highly dependent on agriculture. The presence of flood and drought years influenced the total cultivation system as well as the economy of the country as Indian agricultural systems is still highly dependent on the monsoon rainfall. The present study has been planned to investigate the flood and drought years for the north-west Himalayan region from 1951 to 2014 by using area average Indian Meteorological Department (IMD) rainfall data. For this investigation the Normalized index (NI) has been utilized to find out whether the particular year is drought or flood. The data have been extracted for the north-west Himalayan (NWH) region states namely Uttarakhand (UK), Himachal Pradesh (HP) and Jammu and Kashmir (J&K) to find out the rainy season average rainfall for each year, climatological mean and the standard deviation. After calculation it has been plotted by the diagrams (or graphs) to show the results- some of the years associated with drought years, some are flood years and rest are neutral. The flood and drought years can also relate with the large-scale phenomena El-Nino and La-Lina. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=IMD" title="IMD">IMD</a>, <a href="https://publications.waset.org/abstracts/search?q=rainfall" title=" rainfall"> rainfall</a>, <a href="https://publications.waset.org/abstracts/search?q=normalized%20index" title=" normalized index"> normalized index</a>, <a href="https://publications.waset.org/abstracts/search?q=flood" title=" flood"> flood</a>, <a href="https://publications.waset.org/abstracts/search?q=drought" title=" drought"> drought</a>, <a href="https://publications.waset.org/abstracts/search?q=NWH" title=" NWH"> NWH</a> </p> <a href="https://publications.waset.org/abstracts/88591/computation-of-flood-and-drought-years-over-the-north-west-himalayan-region-using-indian-meteorological-department-rainfall-data" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88591.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">289</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> Mature Cystic Teratomas of Ovary: A Series of 19 Cases with Rare Malignant Transformation in Three</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Parveen%20Kundu">Parveen Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Nitika%20Chawla"> Nitika Chawla</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruchi%20Agarwal"> Ruchi Agarwal</a>, <a href="https://publications.waset.org/abstracts/search?q=Swaran%20Kaur"> Swaran Kaur</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Mature cystic teratoma is a benign, most common tumor of the ovary occurring mostly in young and middle-aged females. This study consists of 19 cases of mature cystic teratomas which were received in the Department Of Pathology over a period of two years. There were malignant transformations observed in three cases, which makes it very important for pathologists to thoroughly examine the entire specimen of mature cystic teratomas. Material and Methods: Nineteen reported cases of mature cystic teratomas were received in Deptt. Of Pathology, BPS GMC Khanpur Kalan, Sonepat, over a two-year period from November 2020 to October 2022 and reviewed retrospectively. Data regarding age, size, laterality, gross, morphological features, and surgery performed were retrieved from pathological archives. Results: In our study, the most common age of presentation was the 20-40 year age group. The most common presenting complaint was fullness in the abdomen or abdominal distension. Four out of 19 cases studied cases presented with bilateral ovarian cysts. Tumor size ranged from 6 to 20 cm in diameter. In seven cases, cysts were greater than or equal to 10 cm in diameter. Three cases showed malignant transformation. Conclusion: It is very important to thoroughly examine the contralateral ovary to rule out bilateral presentation. A furthermost thorough examination is advised in tumors of size >10 cm and in tumors with solid areas to rule out any malignant transformation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=teratoma" title="teratoma">teratoma</a>, <a href="https://publications.waset.org/abstracts/search?q=ovary" title=" ovary"> ovary</a>, <a href="https://publications.waset.org/abstracts/search?q=malignant" title=" malignant"> malignant</a>, <a href="https://publications.waset.org/abstracts/search?q=transformation" title=" transformation"> transformation</a> </p> <a href="https://publications.waset.org/abstracts/169478/mature-cystic-teratomas-of-ovary-a-series-of-19-cases-with-rare-malignant-transformation-in-three" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169478.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">87</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> Selection of Optimal Reduced Feature Sets of Brain Signal Analysis Using Heuristically Optimized Deep Autoencoder</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Phadikar">Souvik Phadikar</a>, <a href="https://publications.waset.org/abstracts/search?q=Nidul%20Sinha"> Nidul Sinha</a>, <a href="https://publications.waset.org/abstracts/search?q=Rajdeep%20Ghosh"> Rajdeep Ghosh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In brainwaves research using electroencephalogram (EEG) signals, finding the most relevant and effective feature set for identification of activities in the human brain is a big challenge till today because of the random nature of the signals. The feature extraction method is a key issue to solve this problem. Finding those features that prove to give distinctive pictures for different activities and similar for the same activities is very difficult, especially for the number of activities. The performance of a classifier accuracy depends on this quality of feature set. Further, more number of features result in high computational complexity and less number of features compromise with the lower performance. In this paper, a novel idea of the selection of optimal feature set using a heuristically optimized deep autoencoder is presented. Using various feature extraction methods, a vast number of features are extracted from the EEG signals and fed to the autoencoder deep neural network. The autoencoder encodes the input features into a small set of codes. To avoid the gradient vanish problem and normalization of the dataset, a meta-heuristic search algorithm is used to minimize the mean square error (MSE) between encoder input and decoder output. To reduce the feature set into a smaller one, 4 hidden layers are considered in the autoencoder network; hence it is called Heuristically Optimized Deep Autoencoder (HO-DAE). In this method, no features are rejected; all the features are combined into the response of responses of the hidden layer. The results reveal that higher accuracy can be achieved using optimal reduced features. The proposed HO-DAE is also compared with the regular autoencoder to test the performance of both. The performance of the proposed method is validated and compared with the other two methods recently reported in the literature, which reveals that the proposed method is far better than the other two methods in terms of classification accuracy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=autoencoder" title="autoencoder">autoencoder</a>, <a href="https://publications.waset.org/abstracts/search?q=brainwave%20signal%20analysis" title=" brainwave signal analysis"> brainwave signal analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=electroencephalogram" title=" electroencephalogram"> electroencephalogram</a>, <a href="https://publications.waset.org/abstracts/search?q=feature%20extraction" title=" feature extraction"> feature extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=feature%20selection" title=" feature selection"> feature selection</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a> </p> <a href="https://publications.waset.org/abstracts/118906/selection-of-optimal-reduced-feature-sets-of-brain-signal-analysis-using-heuristically-optimized-deep-autoencoder" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/118906.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">114</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> Vascular Crossed Aphasia in Dextrals: A Study on Bengali-Speaking Population in Eastern India</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Durjoy%20Lahiri">Durjoy Lahiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Vishal%20Madhukar%20Sawale"> Vishal Madhukar Sawale</a>, <a href="https://publications.waset.org/abstracts/search?q=Ashwani%20Bhat"> Ashwani Bhat</a>, <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Dubey"> Souvik Dubey</a>, <a href="https://publications.waset.org/abstracts/search?q=Gautam%20Das"> Gautam Das</a>, <a href="https://publications.waset.org/abstracts/search?q=Biman%20Kanti%20Roy"> Biman Kanti Roy</a>, <a href="https://publications.waset.org/abstracts/search?q=Suparna%20Chatterjee"> Suparna Chatterjee</a>, <a href="https://publications.waset.org/abstracts/search?q=Goutam%20Gangopadhyay"> Goutam Gangopadhyay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Crossed aphasia has been an area of considerable interest for cognitive researchers as it offers a fascinating insight into cerebral lateralization for language function. We conducted an observational study in the stroke unit of a tertiary care neurology teaching hospital in eastern India on subjects with crossed aphasia over a period of four years. During the study period, we detected twelve cases of crossed aphasia in strongly right-handed patients, caused by ischemic stroke. The age, gender, vernacular language and educational status of the patients were noted. Aphasia type and severity were assessed using Bengali version of Western Aphasia Battery (validated). Computed tomography, magnetic resonance imaging and angiography were used to evaluate the location and extent of the ischemic lesion in brain. Our series of 12 cases of crossed aphasia included 7 male and 5 female with mean age being 58.6 years. Eight patients were found to have Broca’s aphasia, 3 had trans-cortical motor aphasia and 1 patient suffered from global aphasia. Nine patients were having very severe aphasia and 3 suffered from mild aphasia. Mirror-image type of crossed aphasia was found in 3 patients, whereas 9 had anomalous variety. In our study crossed aphasia was found to be more frequent in males. Anomalous pattern was more common than mirror-image. Majority of the patients had motor-type aphasia and no patient was found to have pure comprehension deficit. We hypothesize that in Bengali-speaking right-handed population, lexical-semantic system of the language network remains loyal to the left hemisphere even if the phonological output system is anomalously located in the right hemisphere. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aphasia" title="aphasia">aphasia</a>, <a href="https://publications.waset.org/abstracts/search?q=crossed" title=" crossed"> crossed</a>, <a href="https://publications.waset.org/abstracts/search?q=lateralization" title=" lateralization"> lateralization</a>, <a href="https://publications.waset.org/abstracts/search?q=language%20function" title=" language function"> language function</a>, <a href="https://publications.waset.org/abstracts/search?q=vascular" title=" vascular"> vascular</a> </p> <a href="https://publications.waset.org/abstracts/99580/vascular-crossed-aphasia-in-dextrals-a-study-on-bengali-speaking-population-in-eastern-india" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/99580.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">192</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> Inducing Cryptobiosis State of Tardigrades in Cyanobacteria Synechococcus elongatus for Effective Preservation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nilesh%20Bandekar">Nilesh Bandekar</a>, <a href="https://publications.waset.org/abstracts/search?q=Sumita%20Dasgupta"> Sumita Dasgupta</a>, <a href="https://publications.waset.org/abstracts/search?q=Luis%20Alberto%20Allcahuaman%20Huaya"> Luis Alberto Allcahuaman Huaya</a>, <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Manna"> Souvik Manna</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cryptobiosis is a dormant state where all measurable metabolic activities are at a halt, allowing an organism to survive in extreme conditions like low temperature (cryobiosis), extreme drought (anhydrobiosis), etc. This phenomenon is observed especially in tardigrades that can retain this state for decades depending on the abiotic environmental conditions. On returning to favorable conditions, tardigrades re-attain a metabolically active state. In this study, cyanobacteria as a model organism are being chosen to induce cryptobiosis for its effective preservation over a long period of time. Preserving cyanobacteria using this strategy will have multiple space applications because of its ability to produce oxygen. In addition, research has shown the survivability of this organism in space for a certain period of time. Few species of cyanobacterial residents of the soil such as Microcoleus, are able to survive in extreme drought as well. This work specifically focuses on Synechococcus elongatus, an endolith cyanobacteria with multiple benefits. It has the capability to produce 25% oxygen in water bodies. It utilizes carbon dioxide to produce oxygen via photosynthesis and also uses carbon dioxide as an energy source to form glucose via the Calvin cycle. There is a fair possibility of initiating cryptobiosis in such an organism by inducing certain proteins extracted from tardigrades such as Heat Shock Proteins (Hsp27 and Hsp30c) and/or hydrophilic Late Embryogenesis Abundant proteins (LEA). Existing methods like cryopreservation are difficult to execute in space keeping in mind their cost and heavy instrumentation. Also, extensive freezing may cause cellular damage. Therefore, cryptobiosis-induced cyanobacteria for its transportation from Earth to Mars as a part of future terraforming missions on Mars will save resources and increase the effectiveness of preservation. Finally, Cyanobacteria species like Synechococcus elongatus can also produce oxygen and glucose on Mars in favorable conditions and holds the key to terraforming Mars. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cryptobiosis" title="cryptobiosis">cryptobiosis</a>, <a href="https://publications.waset.org/abstracts/search?q=cyanobacteria" title=" cyanobacteria"> cyanobacteria</a>, <a href="https://publications.waset.org/abstracts/search?q=glucose" title=" glucose"> glucose</a>, <a href="https://publications.waset.org/abstracts/search?q=mars" title=" mars"> mars</a>, <a href="https://publications.waset.org/abstracts/search?q=Synechococcus%20elongatus" title=" Synechococcus elongatus"> Synechococcus elongatus</a>, <a href="https://publications.waset.org/abstracts/search?q=tardigrades" title=" tardigrades"> tardigrades</a> </p> <a href="https://publications.waset.org/abstracts/156718/inducing-cryptobiosis-state-of-tardigrades-in-cyanobacteria-synechococcus-elongatus-for-effective-preservation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/156718.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">227</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> The Impact of Land Cover Change on Stream Discharges and Water Resources in Luvuvhu River Catchment, Vhembe District, Limpopo Province, South Africa</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=P.%20M.%20Kundu">P. M. Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20R.%20Singo"> L. R. Singo</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20O.%20Odiyo"> J. O. Odiyo </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Luvuvhu River catchment in South Africa experiences floods resulting from heavy rainfall of intensities exceeding 15 mm per hour associated with the Inter-tropical Convergence Zone (ITCZ). The generation of runoff is triggered by the rainfall intensity and soil moisture status. In this study, remote sensing and GIS techniques were used to analyze the hydrologic response to land cover changes. Runoff was calculated as a product of the net precipitation and a curve number coefficient. It was then routed using the Muskingum-Cunge method using a diffusive wave transfer model that enabled the calculation of response functions between start and end point. Flood frequency analysis was determined using theoretical probability distributions. Spatial data on land cover was obtained from multi-temporal Landsat images while data on rainfall, soil type, runoff and stream discharges was obtained by direct measurements in the field and from the Department of Water. A digital elevation model was generated from contour maps available at http://www.ngi.gov.za. The results showed that land cover changes had impacted negatively to the hydrology of the catchment. Peak discharges in the whole catchment were noted to have increased by at least 17% over the period while flood volumes were noted to have increased by at least 11% over the same period. The flood time to peak indicated a decreasing trend, in the range of 0.5 to 1 hour within the years. The synergism between remotely sensed digital data and GIS for land surface analysis and modeling was realized, and it was therefore concluded that hydrologic modeling has potential for determining the influence of changes in land cover on the hydrologic response of the catchment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=catchment" title="catchment">catchment</a>, <a href="https://publications.waset.org/abstracts/search?q=digital%20elevation%20model" title=" digital elevation model"> digital elevation model</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrological%20model" title=" hydrological model"> hydrological model</a>, <a href="https://publications.waset.org/abstracts/search?q=routing" title=" routing"> routing</a>, <a href="https://publications.waset.org/abstracts/search?q=runoff" title=" runoff"> runoff</a> </p> <a href="https://publications.waset.org/abstracts/23083/the-impact-of-land-cover-change-on-stream-discharges-and-water-resources-in-luvuvhu-river-catchment-vhembe-district-limpopo-province-south-africa" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23083.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">566</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> Achieving Process Stability through Automation and Process Optimization at H Blast Furnace Tata Steel, Jamshedpur</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Krishnendu%20Mukhopadhyay">Krishnendu Mukhopadhyay</a>, <a href="https://publications.waset.org/abstracts/search?q=Subhashis%20Kundu"> Subhashis Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Mayank%20Tiwari"> Mayank Tiwari</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameeran%20Pani"> Sameeran Pani</a>, <a href="https://publications.waset.org/abstracts/search?q=Padmapal"> Padmapal</a>, <a href="https://publications.waset.org/abstracts/search?q=Uttam%20Singh"> Uttam Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Blast Furnace is a counter current process where burden descends from top and hot gases ascend from bottom and chemically reduce iron oxides into liquid hot metal. One of the major problems of blast furnace operation is the erratic burden descent inside furnace. Sometimes this problem is so acute that burden descent stops resulting in Hanging and instability of the furnace. This problem is very frequent in blast furnaces worldwide and results in huge production losses. This situation becomes more adverse when blast furnaces are operated at low coke rate and high coal injection rate with adverse raw materials like high alumina ore and high coke ash. For last three years, H-Blast Furnace Tata Steel was able to reduce coke rate from 450 kg/thm to 350 kg/thm with an increase in coal injection to 200 kg/thm which are close to world benchmarks and expand profitability. To sustain this regime, elimination of irregularities of blast furnace like hanging, channeling, and scaffolding is very essential. In this paper, sustaining of zero hanging spell for consecutive three years with low coke rate operation by improvement in burden characteristics, burden distribution, changes in slag regime, casting practices and adequate automation of the furnace operation has been illustrated. Models have been created to comprehend and upgrade the blast furnace process understanding. A model has been developed to predict the process of maintaining slag viscosity in desired range to attain proper burden permeability. A channeling prediction model has also been developed to understand channeling symptoms so that early actions can be initiated. The models have helped to a great extent in standardizing the control decisions of operators at H-Blast Furnace of Tata Steel, Jamshedpur and thus achieving process stability for last three years. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hanging" title="hanging">hanging</a>, <a href="https://publications.waset.org/abstracts/search?q=channelling" title=" channelling"> channelling</a>, <a href="https://publications.waset.org/abstracts/search?q=blast%20furnace" title=" blast furnace"> blast furnace</a>, <a href="https://publications.waset.org/abstracts/search?q=coke" title=" coke"> coke</a> </p> <a href="https://publications.waset.org/abstracts/74931/achieving-process-stability-through-automation-and-process-optimization-at-h-blast-furnace-tata-steel-jamshedpur" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74931.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">195</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">13</span> A Comparative Study of Regional Climate Models and Global Coupled Models over Uttarakhand</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sudip%20Kumar%20Kundu">Sudip Kumar Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Charu%20Singh"> Charu Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As a great physiographic divide, the Himalayas affecting a large system of water and air circulation which helps to determine the climatic condition in the Indian subcontinent to the south and mid-Asian highlands to the north. It creates obstacles by defending chill continental air from north side into India in winter and also defends rain-bearing southwesterly monsoon to give up maximum precipitation in that area in monsoon season. Nowadays extreme weather conditions such as heavy precipitation, cloudburst, flash flood, landslide and extreme avalanches are the regular happening incidents in the region of North Western Himalayan (NWH). The present study has been planned to investigate the suitable model(s) to find out the rainfall pattern over that region. For this investigation, selected models from Coordinated Regional Climate Downscaling Experiment (CORDEX) and Coupled Model Intercomparison Project Phase 5 (CMIP5) has been utilized in a consistent framework for the period of 1976 to 2000 (historical). The ability of these driving models from CORDEX domain and CMIP5 has been examined according to their capability of the spatial distribution as well as time series plot of rainfall over NWH in the rainy season and compared with the ground-based Indian Meteorological Department (IMD) gridded rainfall data set. It is noted from the analysis that the models like MIROC5 and MPI-ESM-LR from the both CORDEX and CMIP5 provide the best spatial distribution of rainfall over NWH region. But the driving models from CORDEX underestimates the daily rainfall amount as compared to CMIP5 driving models as it is unable to capture daily rainfall data properly when it has been plotted for time series (TS) individually for the state of Uttarakhand (UK) and Himachal Pradesh (HP). So finally it can be said that the driving models from CMIP5 are better than CORDEX domain models to investigate the rainfall pattern over NWH region. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=global%20warming" title="global warming">global warming</a>, <a href="https://publications.waset.org/abstracts/search?q=rainfall" title=" rainfall"> rainfall</a>, <a href="https://publications.waset.org/abstracts/search?q=CMIP5" title=" CMIP5"> CMIP5</a>, <a href="https://publications.waset.org/abstracts/search?q=CORDEX" title=" CORDEX"> CORDEX</a>, <a href="https://publications.waset.org/abstracts/search?q=NWH" title=" NWH"> NWH</a> </p> <a href="https://publications.waset.org/abstracts/87108/a-comparative-study-of-regional-climate-models-and-global-coupled-models-over-uttarakhand" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87108.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">169</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">12</span> Formulation and Evaluation of Solid Dispersion of an Anti-Epileptic Drug Carbamazepine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sharmin%20Akhter">Sharmin Akhter</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Salahuddin"> M. Salahuddin</a>, <a href="https://publications.waset.org/abstracts/search?q=Sukalyan%20Kumar%20Kundu"> Sukalyan Kumar Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Fahim%20Kadir"> Mohammad Fahim Kadir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Relatively insoluble candidate drug like carbamazepine (CBZ) often exhibit incomplete or erratic absorption; and hence wide consideration is given to improve aqueous solubility of such compound. Solid dispersions were formulated with an aim of improving aqueous solubility, oral bioavailability and the rate of dissolution of Carbamazepine using different hydrophyllic polymer like Polyethylene Glycol (PEG) 6000, Polyethylene Glycol (PEG) 4000, kollidon 30, HPMC 6 cps, poloxamer 407 and povidone k 30. Solid dispersions were prepared with different drug to polymer weight ratio by the solvent evaporation method where methanol was used as solvent. Drug-polymer physical mixtures were also prepared to compare the rate of dissolution. Effects of different polymer were studied for solid dispersion formulation as well as physical mixtures. These formulations were characterized in the solid state by Fourier Transform Infrared (FTIR) spectroscopy and Scanning Electron Microscopy (SEM). Solid state characterization indicated CBZ was present as fine particles and entrapped in carrier matrix of PEG 6000 and PVP K30 solid dispersions. Fourier Transform Infrared (FTIR) spectroscopic studies showed the stability of CBZ and absence of well-defined drug-polymer interactions. In contrast to the very slow dissolution rate of pure CBZ, dispersions of drug in polymers considerably improved the dissolution rate. This can be attributed to increased wettability and dispersibility, as well as decreased crystallinity and increase in amorphous fraction of drug. Solid dispersion formulations containing PEG 6000 and Povidone K 30 showed maximum drug release within one hour at the ratio of 1:1:1. Even physical mixtures of CBZ prepared with both carriers also showed better dissolution profiles than those of pure CBZ. In conclusions, solid dispersions could be a promising delivery of CBZ with improved oral bioavailability and immediate release profiles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbamazepine" title="carbamazepine">carbamazepine</a>, <a href="https://publications.waset.org/abstracts/search?q=FTIR" title=" FTIR"> FTIR</a>, <a href="https://publications.waset.org/abstracts/search?q=kollidon%2030" title=" kollidon 30"> kollidon 30</a>, <a href="https://publications.waset.org/abstracts/search?q=HPMC%206%20CPS" title=" HPMC 6 CPS"> HPMC 6 CPS</a>, <a href="https://publications.waset.org/abstracts/search?q=PEG%206000" title=" PEG 6000"> PEG 6000</a>, <a href="https://publications.waset.org/abstracts/search?q=PEG%204000" title=" PEG 4000"> PEG 4000</a>, <a href="https://publications.waset.org/abstracts/search?q=poloxamer%20407" title=" poloxamer 407"> poloxamer 407</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20solubility" title=" water solubility"> water solubility</a>, <a href="https://publications.waset.org/abstracts/search?q=povidone%20k%2030" title=" povidone k 30"> povidone k 30</a>, <a href="https://publications.waset.org/abstracts/search?q=SEM" title=" SEM"> SEM</a>, <a href="https://publications.waset.org/abstracts/search?q=solid%20dispersion" title=" solid dispersion "> solid dispersion </a> </p> <a href="https://publications.waset.org/abstracts/58552/formulation-and-evaluation-of-solid-dispersion-of-an-anti-epileptic-drug-carbamazepine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58552.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">297</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> Effect of Crystallographic Characteristics on Toughness of Coarse Grain Heat Affected Zone for Different Heat Inputs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Trishita%20Ray">Trishita Ray</a>, <a href="https://publications.waset.org/abstracts/search?q=Ashok%20Perka"> Ashok Perka</a>, <a href="https://publications.waset.org/abstracts/search?q=Arnab%20Karani"> Arnab Karani</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Shome"> M. Shome</a>, <a href="https://publications.waset.org/abstracts/search?q=Saurabh%20Kundu"> Saurabh Kundu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Line pipe steels are used for long distance transportation of crude oil and gas under extreme environmental conditions. Welding is necessary to lay large scale pipelines. Coarse Grain Heat Affected Zone (CGHAZ) of a welded joint exhibits worst toughness because of excessive grain growth and brittle microstructures like bainite and martensite, leading to early failure. Therefore, it is necessary to investigate microstructures and properties of the CGHAZ for different welding heat inputs. In the present study, CGHAZ for two heat inputs of 10 kJ/cm and 50 kJ/cm were simulated in Gleeble 3800, and the microstructures were investigated in detail by means of Scanning Electron Microscopy (SEM) and Electron Backscattered Diffraction (EBSD). Charpy Impact Tests were also done to evaluate the impact properties. High heat input was characterized with very low toughness and massive prior austenite grains. With the crystallographic information from EBSD, the area of a single prior austenite grain was traced out for both the welding conditions. Analysis of the prior austenite grains showed the formation of high angle boundaries between the crystallographic packets. Effect of these packet boundaries on secondary cleavage crack propagation was discussed. It was observed that in the low heat input condition, formation of finer packets with a criss-cross morphology inside prior austenite grains was effective in crack arrest whereas, in the high heat input condition, formation of larger packets with higher volume of low angle boundaries failed to resist crack propagation resulting in a brittle fracture. Thus, the characteristics in a crystallographic packet and impact properties are related and should be controlled to obtain optimum properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coarse%20grain%20heat%20affected%20zone" title="coarse grain heat affected zone">coarse grain heat affected zone</a>, <a href="https://publications.waset.org/abstracts/search?q=crystallographic%20packet" title=" crystallographic packet"> crystallographic packet</a>, <a href="https://publications.waset.org/abstracts/search?q=toughness" title=" toughness"> toughness</a>, <a href="https://publications.waset.org/abstracts/search?q=line%20pipe%20steel" title=" line pipe steel"> line pipe steel</a> </p> <a href="https://publications.waset.org/abstracts/72858/effect-of-crystallographic-characteristics-on-toughness-of-coarse-grain-heat-affected-zone-for-different-heat-inputs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72858.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">245</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">10</span> Machine Learning in Agriculture: A Brief Review</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aishi%20Kundu">Aishi Kundu</a>, <a href="https://publications.waset.org/abstracts/search?q=Elhan%20Raza"> Elhan Raza</a> </p> <p class="card-text"><strong>Abstract:</strong></p> "Necessity is the mother of invention" - Rapid increase in the global human population has directed the agricultural domain toward machine learning. The basic need of human beings is considered to be food which can be satisfied through farming. Farming is one of the major revenue generators for the Indian economy. Agriculture is not only considered a source of employment but also fulfils humans’ basic needs. So, agriculture is considered to be the source of employment and a pillar of the economy in developing countries like India. This paper provides a brief review of the progress made in implementing Machine Learning in the agricultural sector. Accurate predictions are necessary at the right time to boost production and to aid the timely and systematic distribution of agricultural commodities to make their availability in the market faster and more effective. This paper includes a thorough analysis of various machine learning algorithms applied in different aspects of agriculture (crop management, soil management, water management, yield tracking, livestock management, etc.).Due to climate changes, crop production is affected. Machine learning can analyse the changing patterns and come up with a suitable approach to minimize loss and maximize yield. Machine Learning algorithms/ models (regression, support vector machines, bayesian models, artificial neural networks, decision trees, etc.) are used in smart agriculture to analyze and predict specific outcomes which can be vital in increasing the productivity of the Agricultural Food Industry. It is to demonstrate vividly agricultural works under machine learning to sensor data. Machine Learning is the ongoing technology benefitting farmers to improve gains in agriculture and minimize losses. This paper discusses how the irrigation and farming management systems evolve in real-time efficiently. Artificial Intelligence (AI) enabled programs to emerge with rich apprehension for the support of farmers with an immense examination of data. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=machine%20Learning" title="machine Learning">machine Learning</a>, <a href="https://publications.waset.org/abstracts/search?q=artificial%20intelligence" title=" artificial intelligence"> artificial intelligence</a>, <a href="https://publications.waset.org/abstracts/search?q=crop%20management" title=" crop management"> crop management</a>, <a href="https://publications.waset.org/abstracts/search?q=precision%20farming" title=" precision farming"> precision farming</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20farming" title=" smart farming"> smart farming</a>, <a href="https://publications.waset.org/abstracts/search?q=pre-harvesting" title=" pre-harvesting"> pre-harvesting</a>, <a href="https://publications.waset.org/abstracts/search?q=harvesting" title=" harvesting"> harvesting</a>, <a href="https://publications.waset.org/abstracts/search?q=post-harvesting" title=" post-harvesting"> post-harvesting</a> </p> <a href="https://publications.waset.org/abstracts/155405/machine-learning-in-agriculture-a-brief-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155405.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">105</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Souvik%20Kundu&page=2">2</a></li> <li class="page-item"><a class="page-link" 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