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Roselyn Obuobi</title> <meta name="description" content="Search results for: Precious Roselyn Obuobi"> <meta name="keywords" content="Precious Roselyn Obuobi"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Precious Roselyn Obuobi"> <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> 150</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Precious Roselyn Obuobi</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">150</span> The Contribution of Sanitation Practices to Marine Pollution and the Prevalence of Water-Borne Diseases in Prampram Coastal Area, Greater Accra-Ghana</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Precious%20Roselyn%20Obuobi">Precious Roselyn Obuobi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: In Ghana, water-borne diseases remain a public health concern due to its impact. While marine pollution has been linked to outbreak of diseases especially in communities along the coast, associated risks such as oil spillage, marine debris, erosion, improper waste disposal and management practices persist. Objective: The study seeks to investigate sanitation practices that contribute to marine pollution in Prampram and the prevalence of selected water-borne diseases (diarrhea and typhoid fever). Method: This study used a descriptive cross-sectional design, employing the mix-method (qualitative and quantitative) approach. Twenty-two (22) participants were selected and semistructured questionnaire were administered to them. Additionally, interviews were conducted to collect more information. Further, an observation check-list was used to aid the data collection process. Secondary data comprising information on water-borne diseases in the district was acquired from the district health directorate to determine the prevalence of selected water-borne diseases in the community. Data Analysis: The qualitative data was analyzed using NVIVO® software by adapting the six steps thematic analysis by Braun and Clarke whiles STATA® version 16 was used to analyze the secondary data collected from the district health directorate. A descriptive statistic employed using mean, standard deviation, frequencies and proportions were used to summarize the results. Results: The results showed that open defecation and indiscriminate waste disposal were the main practices contributing to marine pollution in Prampram and its effect on public health. Conclusion: These findings have implications on public health and the environment, thus effort needs to be stepped up in educating the community on best sanitation practices. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=environment" title="environment">environment</a>, <a href="https://publications.waset.org/abstracts/search?q=sanitation" title=" sanitation"> sanitation</a>, <a href="https://publications.waset.org/abstracts/search?q=marine%20pollution" title=" marine pollution"> marine pollution</a>, <a href="https://publications.waset.org/abstracts/search?q=water-borne%20diseases" title=" water-borne diseases"> water-borne diseases</a> </p> <a href="https://publications.waset.org/abstracts/165578/the-contribution-of-sanitation-practices-to-marine-pollution-and-the-prevalence-of-water-borne-diseases-in-prampram-coastal-area-greater-accra-ghana" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165578.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">76</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">149</span> Investigation and Identification of a Number of Precious and Semi-precious Stones Related to Bam Historical Citadel Using Micro Raman Spectroscopy and Scanning Electron Microscopy (SEM/EDX)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nazli%20Darkhal">Nazli Darkhal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The use of gems and ornaments has been common in Iran since the beginning of history. The prosperity of the country, the wealth, and the interest of the people of this land in luxurious and glorious life, combined with beauty, have always attracted the attention of the gems and ornaments of the Iranian people. Iranians are famous in the world for having a long history of collecting and recognizing precious stones. In this case, we can use the unique treasure of national jewelry. Raman spectroscopy method is one of the oscillating spectroscopy methods that is classified in the group of nondestructive study methods, and like other methods, in addition to several advantages, it also has disadvantages and problems. Micro Raman spectroscopy is one of the different types of Raman spectroscopy in which an optical microscope is combined with a Raman device to provide more capabilities and advantages than its original method. In this way, with the help of Raman spectroscopy and a light microscope, while observing more details from different parts of the historical sample, natural or artificial pigments can be identified in a small part of it. The EDX electron microscope also functions as the basis for the interaction of the electron beam with the matter. The beams emitted from this interaction can be used to examine samples. In this article, in addition to introducing the micro Raman spectroscopy method, studies have been conducted on the structure of three samples of existing stones in the historic citadel of Bam. Using this method of study on precious and semi-precious stones, in addition to requiring a short time, can provide us with complete information about the structure and theme of these samples. The results of experiments and gemology of the stones showed that the selected beads are agate and jasper, and they can be placed in the chalcedony group. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bam%20citadel" title="bam citadel">bam citadel</a>, <a href="https://publications.waset.org/abstracts/search?q=precious%20and%20semi-precious%20stones" title=" precious and semi-precious stones"> precious and semi-precious stones</a>, <a href="https://publications.waset.org/abstracts/search?q=Raman%20spectroscopy" title=" Raman spectroscopy"> Raman spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=scanning%20electron%20microscope" title=" scanning electron microscope"> scanning electron microscope</a> </p> <a href="https://publications.waset.org/abstracts/146686/investigation-and-identification-of-a-number-of-precious-and-semi-precious-stones-related-to-bam-historical-citadel-using-micro-raman-spectroscopy-and-scanning-electron-microscopy-semedx" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146686.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">134</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">148</span> Feasibilities for Recovering of Precious Metals from Printed Circuit Board Waste</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Simona%20Ziukaite">Simona Ziukaite</a>, <a href="https://publications.waset.org/abstracts/search?q=Remigijus%20Ivanauskas"> Remigijus Ivanauskas</a>, <a href="https://publications.waset.org/abstracts/search?q=Gintaras%20Denafas"> Gintaras Denafas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Market development of electrical and electronic equipment and a short life cycle is driven by the increasing waste streams. Gold Au, copper Cu, silver Ag and palladium Pd can be found on printed circuit board. These metals make up the largest value of printed circuit board. Therefore, the printed circuit boards scrap is valuable as potential raw material for precious metals recovery. A comparison of Cu, Au, Ag, Pd recovery from waste printed circuit techniques was selected metals leaching of chemical reagents. The study was conducted using the selected multistage technique for Au, Cu, Ag, Pd recovery of printed circuit board. In the first and second metals leaching stages, as the elution reagent, 2M H2SO4 and H2O2 (35%) was used. In the third stage, leaching of precious metals used solution of 20 g/l of thiourea and 6 g/l of Fe2 (SO4)3. Verify the efficiency of the method was carried out the metals leaching test with aqua regia. Based on the experimental study, the leaching efficiency, using the preferred methodology, 60 % of Au and 85,5 % of Cu dissolution was achieved. Metals leaching efficiency after waste mechanical crushing and thermal treatment have been increased by 1,7 times (40 %) for copper, 1,6 times (37 %) for gold and 1,8 times (44 %) for silver. It was noticed that, the Au amount in old (> 20 years) waste is 17 times more, Cu amount - 4 times more, and Ag - 2 times more than in the new (< 1 years) waste. Palladium in the new printed circuit board waste has not been found, however, it was established that from 1 t of old printed circuit board waste can be recovered 1,064 g of Pd (leaching with aqua regia). It was found that from 1 t of old printed circuit board waste can be recovered 1,064 g of Ag. Precious metals recovery in Lithuania was estimated in this study. Given the amounts of generated printed circuit board waste, the limits for recovery of precious metals were identified. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=leaching%20efficiency" title="leaching efficiency">leaching efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=limits%20for%20recovery" title=" limits for recovery"> limits for recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=precious%20metals%20recovery" title=" precious metals recovery"> precious metals recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=printed%20circuit%20board%20waste" title=" printed circuit board waste"> printed circuit board waste</a> </p> <a href="https://publications.waset.org/abstracts/56918/feasibilities-for-recovering-of-precious-metals-from-printed-circuit-board-waste" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56918.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">391</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">147</span> Synergistic Effects of the Substrate-Ligand Interaction in Metal-Organic Complexes on the De-electronation Kinetics of a Vitamin C Fuel Cell</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muskan%20Parmar">Muskan Parmar</a>, <a href="https://publications.waset.org/abstracts/search?q=Musthafa%20Ottakam%20Thotiyl"> Musthafa Ottakam Thotiyl</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The rising need for portable energy sources has led to advancements in direct liquid fuel cells (DLFCs) using various fuels like alcohol, ammonia, hydrazine, and vitamin C. Traditional precious metal catalysts improve reaction speeds but are expensive and prone to poisoning. Our study reveals how non-precious metal organometallic complexes, combined with smartly designed ligands, can significantly boost performance. The key is a unique interaction between the substrate (fuel) and the ligand, which creates a "dragging" effect that enhances reaction rates. By using this approach with a ferricyanide/ferrocyanide half-cell reaction, we developed a vitamin C fuel cell without precious metals. This fuel cell achieves an open circuit voltage of ∼950 mV, a peak power density of ∼97 mW cm⁻², and a peak current density of ∼215 mA cm⁻². Impressively, its performance is about 1.7 times better than traditional precious metal-based DLFCs. This highlights the potential of substrate ligand chemistry in the creation of sustainable DLFCs for efficient energy conversion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=molecular%20electrocatalysts" title="molecular electrocatalysts">molecular electrocatalysts</a>, <a href="https://publications.waset.org/abstracts/search?q=vitamin%20C%20fuel%20cell" title=" vitamin C fuel cell"> vitamin C fuel cell</a>, <a href="https://publications.waset.org/abstracts/search?q=proton%20charge%20assembly" title=" proton charge assembly"> proton charge assembly</a>, <a href="https://publications.waset.org/abstracts/search?q=ferricyanide%20half-cell%20chemistry" title=" ferricyanide half-cell chemistry"> ferricyanide half-cell chemistry</a> </p> <a href="https://publications.waset.org/abstracts/192220/synergistic-effects-of-the-substrate-ligand-interaction-in-metal-organic-complexes-on-the-de-electronation-kinetics-of-a-vitamin-c-fuel-cell" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/192220.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">21</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">146</span> Determination of Mercury in Gold Ores by CVAAS Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ratna%20Siti%20Khodijah">Ratna Siti Khodijah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mirzam%20Abdurrachman"> Mirzam Abdurrachman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Gold is recovered from gold ores. Within the ores, there are not only gold but also several types of precious metals. Copper, silver, and platinum group elements (ruthenium, rhodium, palladium, rhenium, osmium, and iridium) are metals commonly found in the ores. These metals combine to form an ore because they have the same properties. It is due to their position in periodic-system-of-elements are near to gold. However, the presence of mercury in every gold ore has not been mentioned, even though it is located right next to gold in the periodic-system-of-elements and they are located in the same block, d-block. Thus, it is possible that mercury is contained in the ores. Moreover, the elements of the same group with mercury—zinc and cadmium—sometimes can be found in the ores. It is suspected that mercury can not be detected because the processing of gold ores usually using fire assay method. Before the ores melting, mercury would evaporate because it has the lowest boiling point of all precious metal in the ores. Therefore, it suggested doing research on the presence of mercury in gold ores by CVAAS method. The results of this study would obtain the amount of mercury in gold ores that should be purified. So it can be produced economically if possible. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boiling%20point" title="boiling point">boiling point</a>, <a href="https://publications.waset.org/abstracts/search?q=d-block" title=" d-block"> d-block</a>, <a href="https://publications.waset.org/abstracts/search?q=fire%20assay" title=" fire assay"> fire assay</a>, <a href="https://publications.waset.org/abstracts/search?q=precious%20metal" title=" precious metal"> precious metal</a> </p> <a href="https://publications.waset.org/abstracts/72809/determination-of-mercury-in-gold-ores-by-cvaas-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72809.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">341</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">145</span> Precious and Rare Metals in Overburden Carbonaceous Rocks: Methods of Extraction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tatyana%20Alexandrova">Tatyana Alexandrova</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexandr%20Alexandrov"> Alexandr Alexandrov</a>, <a href="https://publications.waset.org/abstracts/search?q=Nadezhda%20Nikolaeva"> Nadezhda Nikolaeva</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A problem of complex mineral resources development is urgent and priority, it is aimed at realization of the processes of their ecologically safe development, one of its components is revealing the influence of the forms of element compounds in raw materials and in the processing products. In view of depletion of the precious metal reserves at the traditional deposits in the XXI century the large-size open cast deposits, localized in black shale strata begin to play the leading role. Carbonaceous (black) shales carry a heightened metallogenic potential. Black shales with high content of carbon are widely distributed within the scope of Bureinsky massif. According to academician Hanchuk`s data black shales of Sutirskaya series contain generally PGEs native form. The presence of high absorptive towards carbonaceous matter gold and PGEs compounds in crude ore results in decrease of valuable components extraction because of their sorption into dissipated carbonaceous matter. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%D1%81arbonaceous%20rocks" title="сarbonaceous rocks">сarbonaceous rocks</a>, <a href="https://publications.waset.org/abstracts/search?q=bitumens" title=" bitumens"> bitumens</a>, <a href="https://publications.waset.org/abstracts/search?q=precious%20metals" title=" precious metals"> precious metals</a>, <a href="https://publications.waset.org/abstracts/search?q=concentration" title=" concentration"> concentration</a>, <a href="https://publications.waset.org/abstracts/search?q=extraction" title=" extraction"> extraction</a> </p> <a href="https://publications.waset.org/abstracts/39923/precious-and-rare-metals-in-overburden-carbonaceous-rocks-methods-of-extraction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39923.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">246</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">144</span> Efficient Hydrosilylation of Functionalized Alkenes via Heterogeneous Zinc Oxide Nanoparticle Catalysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahlam%20Chennani">Ahlam Chennani</a>, <a href="https://publications.waset.org/abstracts/search?q=Nadia%20Anter"> Nadia Anter</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelouahed%20M%C3%A9daghri%20Alaoui"> Abdelouahed Médaghri Alaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdellah%20Hannioui"> Abdellah Hannioui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Non-precious metals such as zinc, copper, iron, and nickel are promising hydrosilylation catalysts due to their abundance, affordability, and low toxicity. This study focuses on the preparation of zinc nanoparticles using a simple, scalable method. Advanced techniques such as X-ray diffraction (XRD) and transmission electron microscopy (TEM) are used to characterize these catalysts, revealing their crystal structure and morphology. ZnO nanoparticles demonstrate high efficiency and selectivity in hydrosilylation reactions, producing silylated products. These results highlight the potential of ZnO nanocatalysts for advanced chemical transformations and practical applications in various industrial fields. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanoparticles" title="nanoparticles">nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrosilylation" title=" hydrosilylation"> hydrosilylation</a>, <a href="https://publications.waset.org/abstracts/search?q=catalysts" title=" catalysts"> catalysts</a>, <a href="https://publications.waset.org/abstracts/search?q=non-precious%20metal" title=" non-precious metal"> non-precious metal</a> </p> <a href="https://publications.waset.org/abstracts/188400/efficient-hydrosilylation-of-functionalized-alkenes-via-heterogeneous-zinc-oxide-nanoparticle-catalysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188400.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">26</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">143</span> Application of XRF and Other Principal Component Analysis for Counterfeited Gold Coin Characterization in Forensic Science</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Somayeh%20Khanjani">Somayeh Khanjani</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamideh%20Abolghasemi"> Hamideh Abolghasemi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hadi%20Shirzad"> Hadi Shirzad</a>, <a href="https://publications.waset.org/abstracts/search?q=Samaneh%20Nabavi"> Samaneh Nabavi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> At world market can be currently encountered a wide range of gemological objects that are incorrectly declared, treated, or it concerns completely different materials that try to copy precious objects more or less successfully. Counterfeiting of precious commodities is a problem faced by governments in most countries. Police have seized many counterfeit coins that looked like the real coins and because the feeling to the touch and the weight were very similar to those of real coins. Most people were fooled and believed that the counterfeit coins were real ones. These counterfeit coins may have been made by big criminal organizations. To elucidate the manufacturing process, not only the quantitative analysis of the coins but also the comparison of their morphological characteristics was necessary. Several modern techniques have been applied to prevent counterfeiting of coins. The objective of this study was to demonstrate the potential of X-ray Fluorescence (XRF) technique and the other analytical techniques for example SEM/EDX/WDX, FT-IR/ATR and Raman Spectroscopy. Using four elements (Cu, Ag, Au and Zn) and obtaining XRF for several samples, they could be discriminated. XRF technique and SEM/EDX/WDX are used for study of chemical composition. XRF analyzers provide a fast, accurate, nondestructive method to test the purity and chemistry of all precious metals. XRF is a very promising technique for rapid and non destructive counterfeit coins identification in forensic science. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=counterfeit%20coins" title="counterfeit coins">counterfeit coins</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20fluorescence" title=" X-ray fluorescence"> X-ray fluorescence</a>, <a href="https://publications.waset.org/abstracts/search?q=forensic" title=" forensic"> forensic</a>, <a href="https://publications.waset.org/abstracts/search?q=FT-IR" title=" FT-IR"> FT-IR</a> </p> <a href="https://publications.waset.org/abstracts/28087/application-of-xrf-and-other-principal-component-analysis-for-counterfeited-gold-coin-characterization-in-forensic-science" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28087.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">494</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">142</span> Investment Casting Conditions with Tourmaline In-Situ</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kageeporn%20Wongpreedee">Kageeporn Wongpreedee</a>, <a href="https://publications.waset.org/abstracts/search?q=Bongkot%20Phichaikamjornwut"> Bongkot Phichaikamjornwut</a>, <a href="https://publications.waset.org/abstracts/search?q=Duangkhae%20Bootkul"> Duangkhae Bootkul</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The technique of stone in place casting had been established in jewelry production for two decades. However, the process were not widely used since it was limited to precious stones with high hardness and high stabililty at high temperature. This experiment were tested on tourmaline which is semi-precious gemstone having less hardness and less stability comparing to precious stones. The experiment were designed into two parts. The first part is to understand the phenomena of tourmaline under the heating conditions. Natural tourmaline stones were investigated and compared inclusions inside stones tested at temperature of 500 °C, 600 °C, and 700 °C. The second part is to cast the treated tourmaline with ion-implanation under the stones in place casting conditions. The results showed that stones were able to tolerate as much as at 700 °C showing the growths of inclusions inside the stones. The second part of this experiment were compared tourmaline with ion-implantation and natural tourmaline using on stones in place casting process at different stone setting types. The results showed that the cracks and inclustions of both treat and natural tourmaline with stones in place casting were propagate due to high stress of metal contractions. The stones with ion-implatation were more likely tolerate to cracks and inclusion propagations inside the stones. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=stone%20in%20place%20casting" title="stone in place casting">stone in place casting</a>, <a href="https://publications.waset.org/abstracts/search?q=tourmaline" title=" tourmaline"> tourmaline</a>, <a href="https://publications.waset.org/abstracts/search?q=ion%20implantation" title=" ion implantation"> ion implantation</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20contraction" title=" metal contraction"> metal contraction</a> </p> <a href="https://publications.waset.org/abstracts/57747/investment-casting-conditions-with-tourmaline-in-situ" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57747.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">216</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">141</span> Can Zirconia Wings of Resin Retained Cantilever Bridges Be Effectively Bonded To Tooth Tissue When Compared With Metal Wings In The Anterior Dentition in vivo? - A Systematic Review.</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ariyan%20S.%20Araghi">Ariyan S. Araghi</a>, <a href="https://publications.waset.org/abstracts/search?q=Guy%20C.%20Jackson"> Guy C. Jackson</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephen%20J.%20Bonsor"> Stephen J. Bonsor</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Materials & Methods: A systematic literature search was undertaken using pre-determined inclusion and exclusion criteria. This review followed the Preferred Reporting Items for Systemic Reviews and Meta-Analysis (PRISMA) statement. Several databases were used to search for randomised control trials and longitudinal cohort studies, which were published less than thirty years ago. A total of 54 studies met the predefined inclusion criteria. Four studies reviewed the success, survival, and failure characteristics of zirconia framework resin retained bridges, whilst two reviewed non-precious metal resin retained bridges. Results: The analysis of the studies revealed an overall survival rate of 95.9% for zirconia-based restorations compared to 90.7% for non-precious metal frameworks. Non-precious metal resin retained bridges displayed a higher overall failure rate of 11.9% compared to 4.6% for zirconia-based restorations in the analysed papers. The most frequent complications were wing debonding for the non-precious metal wing group, whereas substructure fracture and veneering ceramic fracture were more prevalent for the zirconia arm of the study. Conclusion: Both types of resin retained bridges provide effective medium to long-term survival. Zirconia-based frameworks will provide marginally increased success and survival and greatly improved aesthetics. However, catastrophic failure is more likely with zirconia-based restorations. Non-precious metal is time tested but performs worse than its zirconia counterpart with regards to longevity; it does not exhibit the same framework fractures as zirconia. Cement choice and attention to the adhesive bonding systems used appear to be paramount to restoration longevity with both restoration subtypes. Furthermore, improved longevity can be seen when air particle abrasion is incorporated into the adhesive protocol. Within the limitations of this study, it has been determined that zirconia-based resin retained bridges can be effectively used in anterior cantilever bridges. Clinical Significance: Zirconia-based resin retained bridges have been demonstrating promising results in terms of improved success and survival characteristics, together with improved aesthetics when compared to non-precious metal winged resin retained bridges. Their popularity is increasing in the age of digital dentistry as many restorations are manufactured using such technology. It is essential that clinicians understand the limitations of each material type and principles of adhesion to ensure restoration longevity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=resin%20retained%20bridge" title="resin retained bridge">resin retained bridge</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20partial%20denture" title=" fixed partial denture"> fixed partial denture</a>, <a href="https://publications.waset.org/abstracts/search?q=zirconia%20bridge" title=" zirconia bridge"> zirconia bridge</a>, <a href="https://publications.waset.org/abstracts/search?q=adhesive%20bridge" title=" adhesive bridge"> adhesive bridge</a> </p> <a href="https://publications.waset.org/abstracts/157701/can-zirconia-wings-of-resin-retained-cantilever-bridges-be-effectively-bonded-to-tooth-tissue-when-compared-with-metal-wings-in-the-anterior-dentition-in-vivo-a-systematic-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157701.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">81</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">140</span> Recovery of Au and Other Metals from Old Electronic Components by Leaching and Liquid Extraction Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tomasz%20Smolinski">Tomasz Smolinski</a>, <a href="https://publications.waset.org/abstracts/search?q=Irena%20Herdzik-Koniecko"> Irena Herdzik-Koniecko</a>, <a href="https://publications.waset.org/abstracts/search?q=Marta%20Pyszynska"> Marta Pyszynska</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Rogowski"> M. Rogowski</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Old electronic components can be easily found nowadays. Significant quantities of valuable metals such as gold, silver or copper are used for the production of advanced electronic devices. Old useless electronic device slowly became a new source of precious metals, very often more efficient than natural. For example, it is possible to recover more gold from 1-ton personal computers than seventeen tons of gold ore. It makes urban mining industry very profitable and necessary for sustainable development. For the recovery of metals from waste of electronic equipment, various treatment options based on conventional physical, hydrometallurgical and pyrometallurgical processes are available. In this group hydrometallurgy processes with their relatively low capital cost, low environmental impact, potential for high metal recoveries and suitability for small scale applications, are very promising options. Institute of Nuclear Chemistry and Technology has great experience in hydrometallurgy processes especially focused on recovery metals from industrial and agricultural wastes. At the moment, urban mining project is carried out. The method of effective recovery of valuable metals from central processing units (CPU) components has been developed. The principal processes such as acidic leaching and solvent extraction were used for precious metals recovery from old processors and graphic cards. Electronic components were treated by acidic solution at various conditions. Optimal acid concentration, time of the process and temperature were selected. Precious metals have been extracted to the aqueous phase. At the next step, metals were selectively extracted by organic solvents such as oximes or tributyl phosphate (TBP) etc. Multistage mixer-settler equipment was used. The process was optimized. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electronic%20waste" title="electronic waste">electronic waste</a>, <a href="https://publications.waset.org/abstracts/search?q=leaching" title=" leaching"> leaching</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrometallurgy" title=" hydrometallurgy"> hydrometallurgy</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20recovery" title=" metal recovery"> metal recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=solvent%20extraction" title=" solvent extraction"> solvent extraction</a> </p> <a href="https://publications.waset.org/abstracts/98691/recovery-of-au-and-other-metals-from-old-electronic-components-by-leaching-and-liquid-extraction-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98691.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">137</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">139</span> Endogenous Development and Sustainable Perspectives: The Case of Traditional Communities Located around the Area of Management of Precious Wood Amazon</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D%C3%A9bora%20Ramos%20Santiago">Débora Ramos Santiago</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Endogenous development usually apresent a deep approach to locational aspects, considering the potential, knowledge and the workforce, as encouragement to articulate the entire productive activity of a community. In the case of communities located around the area of management of the company Precious Wood Amazon (PWA), their endogenous development is subject to the dynamic of this company, which operates a certified way, seeking alternatives to mitigate and compensate the damages caused by its activities. This article soughts to present the socio-economic and environmental challenges to promote of the endogenous development of these communities, identifying the relationship of the PWA in this process. The communities analyzed emerge with poor socioeconomic conditions, futhermore, their ecosystem characteristics differ spatially from each other, which modifies the entire production dynamics. The family agriculture was an important source of income, but needs investment and technical assistance. The participation of PWA in the promotion of the endogenous development of the communities was proved significant, because of the intense sustainable actions practice by PWA. Many are the challenges that exist in these communities, so its fundamental to elaborate public policies to these specific areas. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=endogenous%20development" title="endogenous development">endogenous development</a>, <a href="https://publications.waset.org/abstracts/search?q=traditional%20communities" title=" traditional communities"> traditional communities</a>, <a href="https://publications.waset.org/abstracts/search?q=Amazon" title=" Amazon"> Amazon</a>, <a href="https://publications.waset.org/abstracts/search?q=PWA" title=" PWA"> PWA</a> </p> <a href="https://publications.waset.org/abstracts/20188/endogenous-development-and-sustainable-perspectives-the-case-of-traditional-communities-located-around-the-area-of-management-of-precious-wood-amazon" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20188.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">355</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">138</span> Mimesis in William Shakespeare's Selected Sonnets</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Roselyn%20T.%20Bustos">Roselyn T. Bustos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Literature is an imitation of life. It depicts man's culture as well as his struggles. In short, literature is a part of man's way of life- a reflection of his personal or vicarious experiences. Using the qualitative-descriptive content analysis, this study investigates the mimetic signification in the five select sonnets of William Shakespeare.An in- depth analysis of the poetic elements such as the figurative language used and the themes extracted is made to draw out the universal meaning of his works. It is found out that his select sonnets use figurative languages such as simile, metaphor, personification, and hyperbaton which becomes a potent element that allows his sonnets to convey the themes of love and perseverance. With these findings, it is concluded that William Shakespeare's sonnets are evidently written within the context of the universals and that they are worthy of wide readership not only because of him being a renowned English poet and playwright but most importantly of the realities his sonnets signify. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=imitation" title="imitation">imitation</a>, <a href="https://publications.waset.org/abstracts/search?q=mimesis" title=" mimesis"> mimesis</a>, <a href="https://publications.waset.org/abstracts/search?q=potent" title=" potent"> potent</a>, <a href="https://publications.waset.org/abstracts/search?q=realities" title=" realities"> realities</a> </p> <a href="https://publications.waset.org/abstracts/35748/mimesis-in-william-shakespeares-selected-sonnets" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35748.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">447</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">137</span> Biosorption of Gold from Chloride Media in a Simultaneous Adsorption-Reduction Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shafiq%20Alam">Shafiq Alam</a>, <a href="https://publications.waset.org/abstracts/search?q=Yen%20Ning%20Lee"> Yen Ning Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Conventional hydrometallurgical processing of metals involves the use of large quantities of toxic chemicals. Realizing a need to develop sustainable technologies, extensive research studies are being carried out to recover and recycle base, precious and rare earth metals from their pregnant leach solutions (PLS) using green chemicals/biomaterials prepared from biomass wastes derived from agriculture, marine and forest resources. Our innovative research showed that bio-adsorbents prepared from such biomass wastes can effectively adsorb precious metals, especially gold after conversion of their functional groups in a very simple process. The highly effective ‘Adsorption-coupled-Reduction’ phenomenon witnessed appears promising for the potential use of this gold biosorption process in the mining industry. Proper management and effective use of biomass wastes as value added green chemicals will not only reduce the volume of wastes being generated every day in our society, but will also have a high-end value to the mining and mineral processing industries as those biomaterials would be cheap, but very selective for gold recovery/recycling from low grade ore, leach residue or e-wastes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biosorption" title="biosorption">biosorption</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrometallurgy" title=" hydrometallurgy"> hydrometallurgy</a>, <a href="https://publications.waset.org/abstracts/search?q=gold" title=" gold"> gold</a>, <a href="https://publications.waset.org/abstracts/search?q=adsorption" title=" adsorption"> adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=reduction" title=" reduction"> reduction</a>, <a href="https://publications.waset.org/abstracts/search?q=biomass" title=" biomass"> biomass</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainability" title=" sustainability"> sustainability</a> </p> <a href="https://publications.waset.org/abstracts/73864/biosorption-of-gold-from-chloride-media-in-a-simultaneous-adsorption-reduction-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/73864.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">376</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">136</span> Understanding the Thermal Transformation of Random Access Memory Cards: A Pathway to Their Efficient Recycling </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khushalini%20N.%20Ulman">Khushalini N. Ulman</a>, <a href="https://publications.waset.org/abstracts/search?q=Samane%20Maroufi"> Samane Maroufi</a>, <a href="https://publications.waset.org/abstracts/search?q=Veena%20H.%20Sahajwalla"> Veena H. Sahajwalla</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Globally, electronic waste (e-waste) continues to grow at an alarming rate. Several technologies have been developed to recover valuable materials from e-waste, however, their efficiency can be increased with a better knowledge of the e-waste components. Random access memory cards (RAMs) are considered as high value scrap for the e-waste recyclers. Despite their high precious metal content, RAMs are still recycled in a conventional manner resulting in huge loss of resources. Our research work highlights the precious metal rich components of a RAM. Inductively coupled plasma (ICP) analysis of RAMs of six different generations have been carried out and the trends in their metal content have been investigated. Over the past decade, the copper content of RAMs has halved and their tin content has increased by 70 %. The stricter environmental laws have facilitated ~96 % drop in the lead content of RAMs. To comprehend the fundamentals of thermal transformation of RAMs, our research provides their detailed kinetic study. This can assist the e-waste recyclers in optimising their metal recovery processes. Thus, understanding the chemical and thermal behaviour of RAMs can open new avenues for efficient e-waste recycling. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electronic%20waste" title="electronic waste">electronic waste</a>, <a href="https://publications.waset.org/abstracts/search?q=kinetic%20study" title=" kinetic study"> kinetic study</a>, <a href="https://publications.waset.org/abstracts/search?q=recycling" title=" recycling"> recycling</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20transformation" title=" thermal transformation"> thermal transformation</a> </p> <a href="https://publications.waset.org/abstracts/95561/understanding-the-thermal-transformation-of-random-access-memory-cards-a-pathway-to-their-efficient-recycling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/95561.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">145</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">135</span> Development of a Computer Vision System for the Blind and Visually Impaired Person</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rodrigo%20C.%20Belleza">Rodrigo C. Belleza</a>, <a href="https://publications.waset.org/abstracts/search?q=Jr."> Jr.</a>, <a href="https://publications.waset.org/abstracts/search?q=Roselyn%20A.%20Maa%C3%B1o"> Roselyn A. Maaño</a>, <a href="https://publications.waset.org/abstracts/search?q=Karl%20Patrick%20E.%20Camota"> Karl Patrick E. Camota</a>, <a href="https://publications.waset.org/abstracts/search?q=Darwin%20Kim%20Q.%20Bulawan"> Darwin Kim Q. Bulawan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Eyes are an essential and conspicuous organ of the human body. Human eyes are outward and inward portals of the body that allows to see the outside world and provides glimpses into ones inner thoughts and feelings. Inevitable blindness and visual impairments may result from eye-related disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means. The study emphasizes innovative tools that will serve as an aid to the blind and visually impaired (VI) individuals. The researchers fabricated a prototype that utilizes the Microsoft Kinect for Windows and Arduino microcontroller board. The prototype facilitates advanced gesture recognition, voice recognition, obstacle detection and indoor environment navigation. Open Computer Vision (OpenCV) performs image analysis, and gesture tracking to transform Kinect data to the desired output. A computer vision technology device provides greater accessibility for those with vision impairments. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=algorithms" title="algorithms">algorithms</a>, <a href="https://publications.waset.org/abstracts/search?q=blind" title=" blind"> blind</a>, <a href="https://publications.waset.org/abstracts/search?q=computer%20vision" title=" computer vision"> computer vision</a>, <a href="https://publications.waset.org/abstracts/search?q=embedded%20systems" title=" embedded systems"> embedded systems</a>, <a href="https://publications.waset.org/abstracts/search?q=image%20analysis" title=" image analysis"> image analysis</a> </p> <a href="https://publications.waset.org/abstracts/2016/development-of-a-computer-vision-system-for-the-blind-and-visually-impaired-person" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2016.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">318</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">134</span> Influence of Angular Position of Unbalanced Force on Crack Breathing Mechanism</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Roselyn%20Zaman">Roselyn Zaman</a>, <a href="https://publications.waset.org/abstracts/search?q=Mobarak%20Hossain"> Mobarak Hossain</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A new mathematical model is developed to study crack breathing behavior considering effect of angular position of unbalanced force at different crack locations. Crack breathing behavior has been determined using effectual bending angle by studying the transient change of the crack area. Different crack breathing behavior of the unbalanced shaft has been observed for different combination of angular position of unbalanced force with crack location except crack locations 0.3L and 0.8335L, where L is the total length of the shaft, where unbalanced shaft behave completely like the balanced shaft. Based on different combination of angular position of unbalanced force with crack location, the stiffness of unbalanced shaft can be divided into three regions. An unbalanced shaft is overall stiffer than a balanced shaft when angular position of unbalance force is between 90° to 270° and crack located between 0.3L and 0.8335L, and it is overall flexible when the crack located in outside this crack region. On the other hand, it is overall flexible when angular position of unbalanced force is between 0° to 90° or 270° to 360° and crack located in middle region and it is overall stiffer for outside this crack region. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cracked%20shaft" title="cracked shaft">cracked shaft</a>, <a href="https://publications.waset.org/abstracts/search?q=crack%20location" title=" crack location"> crack location</a>, <a href="https://publications.waset.org/abstracts/search?q=shaft%20stiffness" title=" shaft stiffness"> shaft stiffness</a>, <a href="https://publications.waset.org/abstracts/search?q=unbalanced%20force" title=" unbalanced force"> unbalanced force</a>, <a href="https://publications.waset.org/abstracts/search?q=and%20unbalanced%20force%20orientation" title=" and unbalanced force orientation"> and unbalanced force orientation</a> </p> <a href="https://publications.waset.org/abstracts/87582/influence-of-angular-position-of-unbalanced-force-on-crack-breathing-mechanism" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87582.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">268</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">133</span> An Understanding of Corporate Social Responsibility in State-Owned Enterprises: The Case of Zimbabwe Revenue Authority</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Melody%20Mandevere">Melody Mandevere</a>, <a href="https://publications.waset.org/abstracts/search?q=Roselyn%20Cheruiyot"> Roselyn Cheruiyot</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Through Corporate Social Responsibility (CSR), organizations contribute to a stable environment that leads to a predictable climate for investment and trade. Organizations are now deviating from traditional CSR, where it was believed that the only responsibility of an organization is to meet its shareholder's needs. Organizations and society now believe that an organization has many stakeholders that it must satisfy for it to be viable. The function of State-Owned Enterprises (SOEs) is not profit making but providing service and accomplishing public policy objectives. SOEs demand consideration in the current economic climate because they represent an important part of the economies of many countries. Given the importance and complex relationship of the stakeholders in SOE, the paper seeks to examine how full name first Zimra is implementing its CSR activities. SOE managers are responsible for CSR implementation and stakeholder engagement. ZIMRA is one of the parastatals that plays a crucial role in the Zimbabwean economy. It is, therefore, important to understand how Zimra is implementing CSR. Qualitative research was used for the research. Interviews were contacted with Zimra managers to understand how they are implementing CSR. Although Zimra managers understand the CSR concept, the organization does not have a CSR strategy that includes their stakeholders, which may have a negative impact on stakeholder perception and the organization's reputation. The funding of the CSR strategy is also not sustainable. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=corporate%20social%20responsibility" title="corporate social responsibility">corporate social responsibility</a>, <a href="https://publications.waset.org/abstracts/search?q=managers" title=" managers"> managers</a>, <a href="https://publications.waset.org/abstracts/search?q=stakeholders" title=" stakeholders"> stakeholders</a>, <a href="https://publications.waset.org/abstracts/search?q=state-owned%20enterprises" title=" state-owned enterprises"> state-owned enterprises</a> </p> <a href="https://publications.waset.org/abstracts/163420/an-understanding-of-corporate-social-responsibility-in-state-owned-enterprises-the-case-of-zimbabwe-revenue-authority" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163420.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">91</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">132</span> Development of Electric Generator and Water Purifier Cart</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Luisito%20L.%20Lacatan">Luisito L. Lacatan</a>, <a href="https://publications.waset.org/abstracts/search?q=Gian%20Carlo%20J.%20Bergonia"> Gian Carlo J. Bergonia</a>, <a href="https://publications.waset.org/abstracts/search?q=Felipe%20C.%20Buado%20III"> Felipe C. Buado III</a>, <a href="https://publications.waset.org/abstracts/search?q=Gerald%20L.%20Gono"> Gerald L. Gono</a>, <a href="https://publications.waset.org/abstracts/search?q=Ron%20Mark%20V.%20Ortil"> Ron Mark V. Ortil</a>, <a href="https://publications.waset.org/abstracts/search?q=Calvin%20A.%20Yap"> Calvin A. Yap</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper features the development of a Mobile Self-sustaining Electricity Generator for water distillation process with MCU- based wireless controller & indicator designed to solve the problem of scarcity of clean water. It is a fact that pure water is precious nowadays and its value is more precious to those who do not have or enjoy it. There are many water filtration products in existence today. However, none of these products fully satisfies the needs of families needing clean drinking water. All of the following products require either large sums of money or extensive maintenance, and some products do not even come with a guarantee of potable water. The proposed project was designed to alleviate the problem of scarcity of potable water in the country and part of the purpose was also to identify the problem or loopholes of the project such as the distance and speed required to produce electricity using a wheel and alternator, the required time for the heating element to heat up, the capacity of the battery to maintain the heat of the heating element and the time required for the boiler to produce a clean and potable water. The project has three parts. The first part included the researchers’ effort to plan every part of the project from the conversion of mechanical energy to electrical energy, from purifying water to potable drinking water to the controller and indicator of the project using microcontroller unit (MCU). This included identifying the problem encountered and any possible solution to prevent and avoid errors. Gathering and reviewing related studies about the project helped the researcher reduce and prevent any problems before they could be encountered. It also included the price and quantity of materials used to control the budget. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mobile" title="mobile">mobile</a>, <a href="https://publications.waset.org/abstracts/search?q=self%20%E2%80%93%20sustaining" title=" self – sustaining"> self – sustaining</a>, <a href="https://publications.waset.org/abstracts/search?q=electricity%20generator" title=" electricity generator"> electricity generator</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20distillation" title=" water distillation"> water distillation</a>, <a href="https://publications.waset.org/abstracts/search?q=wireless%20battery%20indicator" title=" wireless battery indicator"> wireless battery indicator</a>, <a href="https://publications.waset.org/abstracts/search?q=wireless%20water%20level%20indicator" title=" wireless water level indicator"> wireless water level indicator</a> </p> <a href="https://publications.waset.org/abstracts/45555/development-of-electric-generator-and-water-purifier-cart" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45555.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">310</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">131</span> Architectural Approaches to a Sustainable Community with Floating Housing Units Adapting to Climate Change and Sea Level Rise in Vietnam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Thi%20Thu%20Trang">Nguyen Thi Thu Trang </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Climate change and sea level rise is one of the greatest challenges facing human beings in the 21st century. Because of sea level rise, several low-lying coastal areas around the globe are at risk of being completely submerged, disappearing under water. Particularly in Viet Nam, the rise in sea level is predicted to result in more frequent and even permanently inundated coastal plains. As a result, land reserving fund of coastal cities is going to be narrowed in near future, while construction ground is becoming increasingly limited due to a rapid growth in population. Faced with this reality, the solutions are being discussed not only in tradition view such as accommodation is raised or moved to higher areas, or “living with the water”, but also forwards to “living on the water”. Therefore, the concept of a sustainable floating community with floating houses based on the precious value of long term historical tradition of water dwellings in Viet Nam would be a sustainable solution for adaptation of climate change and sea level rise in the coastal areas. The sustainable floating community is comprised of sustainability in four components: architecture, environment, socio-economic and living quality. This research paper is focused on sustainability in architectural component of floating community. Through detailed architectural analysis of current floating houses and floating communities in Viet Nam, this research not only accumulates precious values of traditional architecture that need to be preserved and developed in the proposed concept, but also illustrates its weaknesses that need to address for optimal design of the future sustainable floating communities. Based on these studies the research would provide guidelines with appropriate architectural solutions for the concept of sustainable floating community with floating housing units that are adapted to climate change and sea level rise in Viet Nam. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=guidelines" title="guidelines">guidelines</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20floating%20community" title=" sustainable floating community"> sustainable floating community</a>, <a href="https://publications.waset.org/abstracts/search?q=floating%20houses" title=" floating houses"> floating houses</a>, <a href="https://publications.waset.org/abstracts/search?q=Vietnam" title=" Vietnam"> Vietnam</a> </p> <a href="https://publications.waset.org/abstracts/36693/architectural-approaches-to-a-sustainable-community-with-floating-housing-units-adapting-to-climate-change-and-sea-level-rise-in-vietnam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/36693.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">518</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">130</span> Highly Active, Non-Platinum Metal Catalyst Material as Bi-Functional Air Cathode in Zinc Air Battery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thirupathi%20Thippani">Thirupathi Thippani</a>, <a href="https://publications.waset.org/abstracts/search?q=Kothandaraman%20Ramanujam"> Kothandaraman Ramanujam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Current research on energy storage has been paid to metal-air batteries, because of attractive alternate energy source for the future. Metal – air batteries have the probability to significantly increase the power density, decrease the cost of energy storage and also used for a long time due to its high energy density, low-level pollution, light weight. The performance of these batteries mostly restricted by the slow kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) on cathode during battery discharge and charge. The ORR and OER are conventionally carried out with precious metals (such as Pt) and metal oxides (such as RuO₂ and IrO₂) as catalysts separately. However, these metal-based catalysts are regularly undergoing some difficulties, including high cost, low selectivity, poor stability and unfavorable to environmental effects. So, in order to develop the active, stable, corrosion resistance and inexpensive bi-functional catalyst material is mandatory for the commercialization of zinc-air rechargeable battery technology. We have attempted and synthesized non-precious metal (NPM) catalysts comprising cobalt and N-doped multiwalled carbon nanotubes (N-MWCNTs-Co) were synthesized by the solid-state pyrolysis (SSP) of melamine with Co₃O₄. N-MWCNTs-Co acts as an excellent electrocatalyst for both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER), and hence can be used in secondary metal-air batteries and in unitized regenerative fuel cells. It is important to study the OER and ORR at high concentrations of KOH as most of the metal-air batteries employ KOH concentrations > 4M. In the first 16 cycles of the zinc-air battery while using N-MWCNTs-Co, 20 wt.% Pt/C or 20 wt.% IrO₂/C as air electrodes. In the ORR regime (the discharge profile of the zinc-air battery), the cell voltage exhibited by N-MWCNTs-Co was 44 and 83 mV higher (based on 5th cycle) in comparison to of 20 wt.% Pt/C and 20 wt.% IrO₂/C respectively. To demonstrate this promise, a zinc-air battery was assembled and tested at a current density of 0.5 Ag⁻¹ for charge-discharge 100 cycles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=oxygen%20reduction%20reaction%20%28ORR%29" title="oxygen reduction reaction (ORR)">oxygen reduction reaction (ORR)</a>, <a href="https://publications.waset.org/abstracts/search?q=oxygen%20evolution%20reaction%28OER%29" title=" oxygen evolution reaction(OER)"> oxygen evolution reaction(OER)</a>, <a href="https://publications.waset.org/abstracts/search?q=non-platinum" title=" non-platinum"> non-platinum</a>, <a href="https://publications.waset.org/abstracts/search?q=zinc%20air%20battery" title=" zinc air battery"> zinc air battery</a> </p> <a href="https://publications.waset.org/abstracts/54464/highly-active-non-platinum-metal-catalyst-material-as-bi-functional-air-cathode-in-zinc-air-battery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54464.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">234</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">129</span> Relationship and Associated Factors of Breastfeeding Self-efficacy among Postpartum Couples in Malawi: A Cross-sectional Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Roselyn%20Chipojola">Roselyn Chipojola</a>, <a href="https://publications.waset.org/abstracts/search?q=Shu-yu%20Kuo"> Shu-yu Kuo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Breastfeeding self-efficacy in both mothers and fathers play a crucial role in improving exclusive breastfeeding rates. However, less is known on the relationship and predictors of paternal and maternal breastfeeding self-efficacy. This study aimed to examine the relationship and associated factors of breastfeeding self-efficacy (BSE) among mothers and fathers in Malawi. Methods: A cross-sectional study was conducted on 180 pairs of postpartum mothers and fathers at a tertiary maternity facility in central Malawi. BSE was measured using the Breastfeeding Self-Efficacy Scale Short-Form. Depressive symptoms were assessed by the Edinburgh Postnatal Depression Scale. A structured questionnaire was used to collect demographic and health variables. Data were analyzed using multivariable logistic regression and multinomial logistic regression. Results: A higher score of self-efficacy was found in mothers (mean=55.7, Standard Deviation (SD) =6.5) compared to fathers (mean=50.2, SD=11.9). A significant association between paternal and maternal breastfeeding self-efficacy was found (r= 0. 32). Age, employment status, mode of birth was significantly related to maternal and paternal BSE, respectively. Older age and caesarean section delivery were significant factors of combined BSE scores in couples. A higher BSE score in either the mother or her partner predicted higher exclusive breastfeeding rates. BSE scores were lower when couples’ depressive symptoms were high. Conclusion: BSE are highly correlated between Malawian mothers and fathers, with a relatively higher score in maternal BSE. Importantly, a high BSE in couples predicted higher odds of exclusive breastfeeding, which highlights the need to include both mothers and fathers in future breastfeeding promotion strategies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=paternal" title="paternal">paternal</a>, <a href="https://publications.waset.org/abstracts/search?q=maternal" title=" maternal"> maternal</a>, <a href="https://publications.waset.org/abstracts/search?q=exclusive%20breastfeeding" title=" exclusive breastfeeding"> exclusive breastfeeding</a>, <a href="https://publications.waset.org/abstracts/search?q=breastfeeding%20self%E2%80%91efficacy" title=" breastfeeding self‑efficacy"> breastfeeding self‑efficacy</a>, <a href="https://publications.waset.org/abstracts/search?q=malawi" title=" malawi"> malawi</a> </p> <a href="https://publications.waset.org/abstracts/175180/relationship-and-associated-factors-of-breastfeeding-self-efficacy-among-postpartum-couples-in-malawi-a-cross-sectional-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/175180.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">68</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">128</span> Screening of Commonly Used Reinforcement Materials for Tomb Murals</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Liping%20Qiu">Liping Qiu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20Zhang"> Xiaofeng Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In its long history, precious tomb murals suffered from various diseases due to natural and man-made destruction. The key to how to protect tomb murals is how to strengthen and protect the tomb murals. In order to maximize the life of the tomb murals, the artistic, historic, and scientific values of the tomb murals can be continued. In this paper, four kinds of traditional reinforcement materials (silicone acrylic lotion, pure acrylic lotion, polyvinyl acetate lotion, and B72) are selected to reinforce the ground support layer of tomb murals, and the reinforcement effect of each reinforcement material on the ground support layer of murals is compared and analyzed, and the best protection material is obtained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mural" title="mural">mural</a>, <a href="https://publications.waset.org/abstracts/search?q=destruction%20cycle" title=" destruction cycle"> destruction cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=reinforcement%20material" title=" reinforcement material"> reinforcement material</a>, <a href="https://publications.waset.org/abstracts/search?q=disease" title=" disease"> disease</a> </p> <a href="https://publications.waset.org/abstracts/157353/screening-of-commonly-used-reinforcement-materials-for-tomb-murals" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157353.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">127</span> Magnetohydrodynamic Flow over an Exponentially Stretching Sheet</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Raj%20Nandkeolyar">Raj Nandkeolyar</a>, <a href="https://publications.waset.org/abstracts/search?q=Precious%20Sibanda"> Precious Sibanda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The flow of a viscous, incompressible, and electrically conducting fluid under the influence of aligned magnetic field acting along the direction of fluid flow over an exponentially stretching sheet is investigated numerically. The nonlinear partial differential equations governing the flow model is transformed to a set of nonlinear ordinary differential equations using suitable similarity transformation and the solution is obtained using a local linearization method followed by the Chebyshev spectral collocation method. The effects of various parameters affecting the flow and heat transfer as well as the induced magnetic field are discussed using suitable graphs and tables. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aligned%20magnetic%20field" title="aligned magnetic field">aligned magnetic field</a>, <a href="https://publications.waset.org/abstracts/search?q=exponentially%20stretching%20sheet" title=" exponentially stretching sheet"> exponentially stretching sheet</a>, <a href="https://publications.waset.org/abstracts/search?q=induced%20magnetic%20field" title=" induced magnetic field"> induced magnetic field</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetohydrodynamic%20flow" title=" magnetohydrodynamic flow"> magnetohydrodynamic flow</a> </p> <a href="https://publications.waset.org/abstracts/10795/magnetohydrodynamic-flow-over-an-exponentially-stretching-sheet" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10795.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">454</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">126</span> Optimized Approach for Secure Data Sharing in Distributed Database</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Mateen">Ahmed Mateen</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhu%20Qingsheng"> Zhu Qingsheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Bilal"> Ahmad Bilal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the current age of technology, information is the most precious asset of a company. Today, companies have a large amount of data. As the data become larger, access to data for some particular information is becoming slower day by day. Faster data processing to shape it in the form of information is the biggest issue. The major problems in distributed databases are the efficiency of data distribution and response time of data distribution. The security of data distribution is also a big issue. For these problems, we proposed a strategy that can maximize the efficiency of data distribution and also increase its response time. This technique gives better results for secure data distribution from multiple heterogeneous sources. The newly proposed technique facilitates the companies for secure data sharing efficiently and quickly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ER-schema" title="ER-schema">ER-schema</a>, <a href="https://publications.waset.org/abstracts/search?q=electronic%20record" title=" electronic record"> electronic record</a>, <a href="https://publications.waset.org/abstracts/search?q=P2P%20framework" title=" P2P framework"> P2P framework</a>, <a href="https://publications.waset.org/abstracts/search?q=API" title=" API"> API</a>, <a href="https://publications.waset.org/abstracts/search?q=query%20formulation" title=" query formulation"> query formulation</a> </p> <a href="https://publications.waset.org/abstracts/87386/optimized-approach-for-secure-data-sharing-in-distributed-database" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87386.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">333</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">125</span> Simulation of Forest Fire Using Wireless Sensor Network</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20F.%20Fauzi">Mohammad F. Fauzi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nurul%20H.%20Shahba%20M.%20Shahrun"> Nurul H. Shahba M. Shahrun</a>, <a href="https://publications.waset.org/abstracts/search?q=Nurul%20W.%20Hamzah"> Nurul W. Hamzah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohd%20Noah%20A.%20Rahman"> Mohd Noah A. Rahman</a>, <a href="https://publications.waset.org/abstracts/search?q=Afzaal%20H.%20Seyal"> Afzaal H. Seyal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we proposed a simulation system using Wireless Sensor Network (WSN) that will be distributed around the forest for early forest fire detection and to locate the areas affected. In Brunei Darussalam, approximately 78% of the nation is covered by forest. Since the forest is Brunei’s most precious natural assets, it is very important to protect and conserve our forest. The hot climate in Brunei Darussalam can lead to forest fires which can be a fatal threat to the preservation of our forest. The process consists of getting data from the sensors, analyzing the data and producing an alert. The key factors that we are going to analyze are the surrounding temperature, wind speed and wind direction, humidity of the air and soil. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=forest%20fire%20monitor" title="forest fire monitor">forest fire monitor</a>, <a href="https://publications.waset.org/abstracts/search?q=humidity" title=" humidity"> humidity</a>, <a href="https://publications.waset.org/abstracts/search?q=wind%20direction" title=" wind direction"> wind direction</a>, <a href="https://publications.waset.org/abstracts/search?q=wireless%20sensor%20network" title=" wireless sensor network"> wireless sensor network</a> </p> <a href="https://publications.waset.org/abstracts/50659/simulation-of-forest-fire-using-wireless-sensor-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50659.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">454</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">124</span> A Multi-Beneficial Gift of Nature (Noni Fruit): Nutritional, Functional, and Post-Harvest Aspects</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahsa%20Moteshakeri">Mahsa Moteshakeri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Morinda citrifolia L., a miracle fruit with common name of Noni, has been widely used as food and traditional medicine in the Polynesians culture. Current scientific evidences have proved the therapeautical and nutritional properties of this fruit so that its extensive production in tropical regions in recent years has emerged a competitive global Noni market mainly as a dietary supplement in the form of juice or tablet. However, there is not much record on the processing method applied on fresh fruit postharvest or even its mechanism of action in controlling diseases. This review aimed to provide a comprehensive data on phytochemicals, technical, and nutritional advances on Noni fruit and recent patents published, as well as medicinal properties of the fruit in order to benefit future investigations on this precious fruit either in industrial or therapeautical section. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=noni%20fruit" title="noni fruit">noni fruit</a>, <a href="https://publications.waset.org/abstracts/search?q=phytochemicals" title=" phytochemicals"> phytochemicals</a>, <a href="https://publications.waset.org/abstracts/search?q=therapeautic%20properties%20of%20fruit" title=" therapeautic properties of fruit"> therapeautic properties of fruit</a>, <a href="https://publications.waset.org/abstracts/search?q=nutritional%20properties%20of%20fruit" title=" nutritional properties of fruit"> nutritional properties of fruit</a> </p> <a href="https://publications.waset.org/abstracts/12591/a-multi-beneficial-gift-of-nature-noni-fruit-nutritional-functional-and-post-harvest-aspects" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12591.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">365</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">123</span> History, Challenges and Solutions for Social Work Education and Recognition in Vietnam </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thuy%20Bui%20Anh">Thuy Bui Anh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ngan%20Nguyen%20Thi%20Thanh"> Ngan Nguyen Thi Thanh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Currently, social work in Vietnam is entering the first step in the development process to become a true profession with a strong position in society. However, Spirit of helping and sharing of social work has already existed in the daily life of Vietnamese people for a very long time, becoming a precious heritage passed down from ancestors to the next generations while expanding the territory, building and defending for the country. Following the stream of history, charity work in Vietnam has gradually transformed itself towards a more professional work, especially in the last 2 decades. Accordingly, more than 50 universities and educational institutions in Vietnam have been licensed to train social work, ensuring a stronger foundation on human resources working in this field. Despite the strong growth, social work profession, social work education and the recognition of the role of the social workers still need to be fueled to develop, responded to the increasing demand of Vietnam society. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=education" title="education">education</a>, <a href="https://publications.waset.org/abstracts/search?q=history" title=" history"> history</a>, <a href="https://publications.waset.org/abstracts/search?q=recognition" title=" recognition"> recognition</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20work" title=" social work"> social work</a>, <a href="https://publications.waset.org/abstracts/search?q=Vietnam" title=" Vietnam"> Vietnam</a> </p> <a href="https://publications.waset.org/abstracts/69745/history-challenges-and-solutions-for-social-work-education-and-recognition-in-vietnam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69745.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">319</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">122</span> A Sustainable Pt/BaCe₁₋ₓ₋ᵧZrₓGdᵧO₃ Catalyst for Dry Reforming of Methane-Derived from Recycled Primary Pt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alessio%20Varotto">Alessio Varotto</a>, <a href="https://publications.waset.org/abstracts/search?q=Lorenzo%20Freschi"> Lorenzo Freschi</a>, <a href="https://publications.waset.org/abstracts/search?q=Umberto%20Pasqual%20Laverdura"> Umberto Pasqual Laverdura</a>, <a href="https://publications.waset.org/abstracts/search?q=Anastasia%20Moschovi"> Anastasia Moschovi</a>, <a href="https://publications.waset.org/abstracts/search?q=Davide%20Pumiglia"> Davide Pumiglia</a>, <a href="https://publications.waset.org/abstracts/search?q=Iakovos%20Yakoumis"> Iakovos Yakoumis</a>, <a href="https://publications.waset.org/abstracts/search?q=Marta%20Feroci"> Marta Feroci</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20Luisa%20Grilli"> Maria Luisa Grilli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dry reforming of Methane (DRM) is considered one of the most valuable technologies for green-house gas valorization thanks to the fact that through this reaction, it is possible to obtain syngas, a mixture of H₂ and CO in an H₂/CO ratio suitable for utilization in the Fischer-Tropsch process of high value-added chemicals and fuels. Challenges of the DRM process are the reduction of costs due to the high temperature of the process and the high cost of precious metals of the catalyst, the metal particles sintering, and carbon deposition on the catalysts’ surface. The aim of this study is to demonstrate the feasibility of the synthesis of catalysts using a leachate solution containing Pt coming directly from the recovery of spent diesel oxidation catalysts (DOCs) without further purification. An unusual perovskite support for DRM, the BaCe₁₋ₓ₋ᵧZrₓGdᵧO₃ (BCZG) perovskite, has been chosen as the catalyst support because of its high thermal stability and capability to produce oxygen vacancies, which suppress the carbon deposition and enhance the catalytic activity of the catalyst. BCZG perovskite has been synthesized by a sol-gel modified Pechini process and calcinated in air at 1100 °C. BCZG supports have been impregnated with a Pt-containing leachate solution of DOC, obtained by a mild hydrometallurgical recovery process, as reported elsewhere by some of the authors of this manuscript. For comparison reasons, a synthetic solution obtained by digesting commercial Pt-black powder in aqua regia was used for BCZG support impregnation. Pt nominal content was 2% in both BCZG-based catalysts formed by real and synthetic solutions. The structure and morphology of catalysts were characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Thermogravimetric Analysis (TGA) was used to study the thermal stability of the catalyst’s samples. Brunauer-Emmett-Teller (BET) analysis provided a high surface area of the catalysts. H₂-TPR (Temperature Programmed Reduction) analysis was used to study the consumption of hydrogen for reducibility, and it was associated with H₂-TPD characterization to study the dispersion of Pt on the surface of the support and calculate the number of active sites used by the precious metal. Dry reforming of methane (DRM) reaction, carried out in a fixed bed reactor, showed a high conversion efficiency of CO₂ and CH4. At 850°C, CO₂ and CH₄ conversion were close to 100% for the catalyst obtained with the aqua regia-based solution of commercial Pt-black, and ~70% (for CH₄) and ~80 % (for CO₂) in the case of real HCl-based leachate solution. H₂/CO ratios were ~0.9 and ~0.70 in the first and latter cases, respectively. As far as we know, this is the first pioneering work in which a BCGZ catalyst and a real Pt-containing leachate solution were successfully employed for DRM reaction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dry%20reforming%20of%20methane" title="dry reforming of methane">dry reforming of methane</a>, <a href="https://publications.waset.org/abstracts/search?q=perovskite" title=" perovskite"> perovskite</a>, <a href="https://publications.waset.org/abstracts/search?q=PGM" title=" PGM"> PGM</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20Pt" title=" recycled Pt"> recycled Pt</a>, <a href="https://publications.waset.org/abstracts/search?q=syngas" title=" syngas"> syngas</a> </p> <a href="https://publications.waset.org/abstracts/187442/a-sustainable-ptbace1zrgdo3-catalyst-for-dry-reforming-of-methane-derived-from-recycled-primary-pt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/187442.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">38</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">121</span> Influence of La on Increasing the ORR Activity of LaNi Supported with N and S Co-doped Carbon Black Electrocatalyst for Fuel Cells and Batteries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maryam%20Kiani">Maryam Kiani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Non-precious electrocatalysts play a crucial role in the oxygen reduction reaction (ORR) for regenerative fuel cells and rechargeable metal-air batteries. To enhance ORR activity, La (a less active element) is added to modify the activity of Ni. This addition increases the surface contents of Ni2+, N, and S species in LaNi/N-S-C, while still maintaining a substantial specific surface area and hierarchical porosity. Therefore, the additional La is essential for the successful ORR process.In addition, the presence of extra La in the LaNi/N-S-C electrocatalyst enhances the efficiency of charge transfer and improves the surface acid-base characteristics, facilitating the adsorption of oxygen molecules during the ORR process. As a result, this superior and desirable electrocatalyst exhibits significantly enhanced ORR bifunctional activity. In fact, its ORR activity is comparable to that of the 20 wt% Pt/C. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fuel%20cells" title="fuel cells">fuel cells</a>, <a href="https://publications.waset.org/abstracts/search?q=batteries" title=" batteries"> batteries</a>, <a href="https://publications.waset.org/abstracts/search?q=dual-doped%20carbon%20black" title=" dual-doped carbon black"> dual-doped carbon black</a>, <a href="https://publications.waset.org/abstracts/search?q=ORR" title=" ORR"> ORR</a> </p> <a href="https://publications.waset.org/abstracts/172381/influence-of-la-on-increasing-the-orr-activity-of-lani-supported-with-n-and-s-co-doped-carbon-black-electrocatalyst-for-fuel-cells-and-batteries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/172381.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> 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