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carbide residue</title> <meta name="description" content="Search results for: calcium carbide residue"> <meta name="keywords" content="calcium carbide residue"> <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="calcium carbide residue"> <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> 1190</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: calcium carbide residue</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1190</span> Effect of Curing Temperature on Unconfined Compression Strength of Bagasse Ash-Calcium Carbide Residue Treated Organic Clay</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=John%20Trihatmoko">John Trihatmoko</a>, <a href="https://publications.waset.org/abstracts/search?q=Luky%20Handoko"> Luky Handoko</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A series of experimental program was undertaken to study the effect of curing temperature on the unconfined compression strength of bagasse ash (BA) - calcium carbide residue (CCR) stabilized organic clay (OC). A preliminary experiment was performed to get the physical properties of OC, and to get the optimum water content (OMC), the standard compaction test was done. The stabilizing agents used in this research was (40% BA + 60% CCR) . Then to obtain the best binder proportion, unconfined compression test was undertaken for OC + 3, 6, 9, 12 and 15% of binder with 7, 14, 21, 28 and 56 days curing period. The best quantity of the binder was found on 9%. Finally, to study the effect of curing temperature, the unconfined compression test was performed on OC + 9% binder with 7, 14, 21, 28 and 56 days curing time with 20O, 25O, 30O, 40O, and 50O C curing temperature. The result indicates that unconfined compression strength (UCS) of treated OC improve according to the increase of curing temperature at the same curing time. The improvement of UCS is probably due to the degree of cementation and pozzolanic reactions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=curing%20temperature" title="curing temperature">curing temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20clay" title=" organic clay"> organic clay</a>, <a href="https://publications.waset.org/abstracts/search?q=bagasse%20ash" title=" bagasse ash"> bagasse ash</a>, <a href="https://publications.waset.org/abstracts/search?q=calcium%20carbide%20residue" title=" calcium carbide residue"> calcium carbide residue</a>, <a href="https://publications.waset.org/abstracts/search?q=unconfined%20compression%20strength" title=" unconfined compression strength"> unconfined compression strength</a> </p> <a href="https://publications.waset.org/abstracts/123381/effect-of-curing-temperature-on-unconfined-compression-strength-of-bagasse-ash-calcium-carbide-residue-treated-organic-clay" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/123381.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">126</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1189</span> Impact of Calcium Carbide Waste Dumpsites on Soil Chemical and Microbial Characteristics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20E.%20Ihejirika">C. E. Ihejirika</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20I.%20Nwachukwu"> M. I. Nwachukwu</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20F.%20Njoku-Tony"> R. F. Njoku-Tony</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20C.%20Ihejirika"> O. C. Ihejirika</a>, <a href="https://publications.waset.org/abstracts/search?q=U.%20O.%20Enwereuzoh"> U. O. Enwereuzoh</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20O.%20Imo"> E. O. Imo</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20C.%20Ashiegbu"> D. C. Ashiegbu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Disposal of industrial solid wastes in the environment is a major environmental challenge. This study investigated the effects of calcium carbide waste dumpsites on soil quality. Soil samples were collected with hand auger from three different dumpsites at varying depths and made into composite samples. Samples were subjected to standard analytical procedures. pH varied from 10.38 to 8.28, nitrate from 5.6mg/kg to 9.3mg/kg, phosphate from 8.8mg/kg to 12.3mg/kg, calcium carbide reduced from 10% to to 3%. Calcium carbide was absent in control soil samples. Bacterial counts from dumpsites ranged from 1.8 x 105cfu/g - 2.5 x 105cfu/g while fungal ranged from 0.8 x 103cfu/g - 1.4 x 103cfu/g. Bacterial isolates included Pseudomonas spp, Flavobacterium spp, and Achromobacter spp, while fungal isolates include Penicillium notatum, Aspergillus niger, and Rhizopus stolonifer. No organism was isolated from the dumpsites at soil depth of 0-15 cm, while there were isolates from other soil depths. Toxicity might be due to alkaline condition of the dumpsite. Calcium carbide might be bactericidal and fungicidal leading to cellular physiology, growth retardation, death, general loss of biodiversity and reduction of ecosystem processes. Detoxification of calcium carbide waste before disposal on soil might be the best option in management. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biodiversity" title="biodiversity">biodiversity</a>, <a href="https://publications.waset.org/abstracts/search?q=calcium-carbide" title=" calcium-carbide"> calcium-carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=denitrification" title=" denitrification"> denitrification</a>, <a href="https://publications.waset.org/abstracts/search?q=toxicity" title=" toxicity "> toxicity </a> </p> <a href="https://publications.waset.org/abstracts/12369/impact-of-calcium-carbide-waste-dumpsites-on-soil-chemical-and-microbial-characteristics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12369.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">546</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">1188</span> Detoxification of Hazardous Organic/Inorganic Contaminants in Automobile Shredder Residue by Multi-Functioned Nano-Size Metallic Calcium Composite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Srinivasa%20Reddy%20Mallampati">Srinivasa Reddy Mallampati</a>, <a href="https://publications.waset.org/abstracts/search?q=Byoung%20Ho%20Lee"> Byoung Ho Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoshiharu%20Mitoma"> Yoshiharu Mitoma</a>, <a href="https://publications.waset.org/abstracts/search?q=Simion%20Cristian"> Simion Cristian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, environmental nanotechnology has risen to the forefront and the new properties and enhanced reactivates offered by nanomaterial may offer a new, low-cost paradigm to solving complex environmental pollution problems. This study assessed the synthesis and application of multi-functioned nano-size metallic calcium (nMC) composite for detoxification of hazardous inorganic (heavy metals (HMs)/organic chlorinated/brominated compound (CBCs) contaminants in automobile shredder residue (ASR). ASR residues ball milled with nMC composite can achieve about 90-100% of HMs immobilization and CBCs decomposition. The results highlight the low quantity of HMs leached from ASR residues after treatment with nMC, which was found to be lower than the standard regulatory limit for hazardous waste landfills. The use of nMC composite in a mechanochemical process to treat hazardous ASR (dry conditions) is a simple and innovative approach to remediate hazardous inorganic/organic cross-contaminates in ASR. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nano-sized%20metallic%20calcium" title="nano-sized metallic calcium">nano-sized metallic calcium</a>, <a href="https://publications.waset.org/abstracts/search?q=automobile%20shredder%20residue" title=" automobile shredder residue"> automobile shredder residue</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%2Finorganic%20contaminants" title=" organic/inorganic contaminants"> organic/inorganic contaminants</a>, <a href="https://publications.waset.org/abstracts/search?q=immobilization" title=" immobilization"> immobilization</a>, <a href="https://publications.waset.org/abstracts/search?q=detoxification" title=" detoxification"> detoxification</a> </p> <a href="https://publications.waset.org/abstracts/72507/detoxification-of-hazardous-organicinorganic-contaminants-in-automobile-shredder-residue-by-multi-functioned-nano-size-metallic-calcium-composite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72507.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">227</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1187</span> Utilization of Soymilk Residue for Wheat Flour Substitution in Gyoza skin</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Naruemon%20Prapasuwannakul">Naruemon Prapasuwannakul</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Soy milk residue is obtained as a byproduct from soy milk and tofu production with little economic value. It contains high protein and fiber as well as various minerals and phyto-chemical compounds. The objective of this research was to substitute soy milk residue for wheat flour in gyoza skin in order to enhance value of soy milk residue and increase protein and fiber content of gyoza skin. Wheat flour was replaced with soy milk residue from 0 to 40%. The soy milk residue prepared in this research contains 26.92% protein, 3.58% fiber, 2.88% lipid, 6.29% ash and 60.33% carbohydrate. The results showed that increasing soy milk residue decreased lightness (L*value), tensile strength and sensory attributes but increased redness (a*), yellowness (b*), protein and fiber contents of product. The result also showed that the gyoza skin substituted with 30% soy milk residue was the most acceptable (p≤0.05) and its protein and fiber content increased up to 45 % and 867 % respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gyoza%20skin" title="Gyoza skin">Gyoza skin</a>, <a href="https://publications.waset.org/abstracts/search?q=sensory" title=" sensory"> sensory</a>, <a href="https://publications.waset.org/abstracts/search?q=soymilk%20residue" title=" soymilk residue"> soymilk residue</a>, <a href="https://publications.waset.org/abstracts/search?q=wheat%20flour" title=" wheat flour"> wheat flour</a> </p> <a href="https://publications.waset.org/abstracts/1611/utilization-of-soymilk-residue-for-wheat-flour-substitution-in-gyoza-skin" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1611.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">401</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">1186</span> Microstructure Characterization on Silicon Carbide Formation from Natural Wood</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Noor%20Leha%20Abdul%20Rahman">Noor Leha Abdul Rahman</a>, <a href="https://publications.waset.org/abstracts/search?q=Koay%20Mei%20Hyie"> Koay Mei Hyie</a>, <a href="https://publications.waset.org/abstracts/search?q=Anizah%20Kalam"> Anizah Kalam</a>, <a href="https://publications.waset.org/abstracts/search?q=Husna%20Elias"> Husna Elias</a>, <a href="https://publications.waset.org/abstracts/search?q=Teng%20Wang%20Dung"> Teng Wang Dung</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dark Red Meranti and Kapur, kinds of important type of wood in Malaysia were used as a precursor to fabricate porous silicon carbide. A carbon template is produced by pyrolysis at 850°C in an oxygen free atmosphere. The carbon template then further subjected to infiltration with silicon by silicon melt infiltration method. The infiltration process was carried out in tube furnace in argon flow at 1500°C, at two different holding time; 2 hours and 3 hours. Thermo gravimetric analysis was done to investigate the decomposition behavior of two species of plants. The resulting silicon carbide was characterized by XRD which was found the formation of silicon carbide and also excess silicon. The microstructure was characterized by scanning electron microscope (SEM) and the density was determined by the Archimedes method. An increase in holding time during infiltration will increased the density as well as formation of silicon carbide. Dark Red Meranti precursor is likely suitable for production of silicon carbide compared to Kapur. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=density" title="density">density</a>, <a href="https://publications.waset.org/abstracts/search?q=SEM" title=" SEM"> SEM</a>, <a href="https://publications.waset.org/abstracts/search?q=silicon%20carbide" title=" silicon carbide"> silicon carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=XRD" title=" XRD "> XRD </a> </p> <a href="https://publications.waset.org/abstracts/30071/microstructure-characterization-on-silicon-carbide-formation-from-natural-wood" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30071.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">424</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">1185</span> Comparison of the Hydration Products of Commercial and Experimental Calcium Silicate Cement: The Preliminary Observational Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seok%20Woo%20Chang">Seok Woo Chang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aim: The objective of this study was to compare and evaluate the hydration products of commercial and experimental calcium silicate cement. Materials and Methods: The commercial calcium silicate cement (ProRoot MTA, Dentsply) and experimental calcium silicate cement (n=10) were mixed with distilled water (water/powder ratio = 20 w/w) and stirred at room temperature for 10 hours. These mixtures were dispersed on wafer and dried for 12 hours at room temperature. Thereafter, the dried specimens were examined with Scanning Electron Microscope (SEM). Electron Dispersive Spectrometry (EDS) was also carried out. Results: The commercial calcium silicate cement (ProRoot MTA) and experimental calcium silicate cement both showed precipitation of rod-like and globule-like crystals. Based on EDS analysis, these precipitates were supposed to be calcium hydroxide or calcium silicate hydrates. The degree of formation of these precipitates was higher in commercial MTA. Conclusions: Based on the results, both commercial and experimental calcium silicate cement had ability to produce calcium hydroxide or calcium silicate hydrate precipitates. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=calcium%20silicate%20cement" title="calcium silicate cement">calcium silicate cement</a>, <a href="https://publications.waset.org/abstracts/search?q=ProRoot%20MTA" title=" ProRoot MTA"> ProRoot MTA</a>, <a href="https://publications.waset.org/abstracts/search?q=precipitation" title=" precipitation"> precipitation</a>, <a href="https://publications.waset.org/abstracts/search?q=calcium%20hydroxide" title=" calcium hydroxide"> calcium hydroxide</a>, <a href="https://publications.waset.org/abstracts/search?q=calcium%20silicate%20hydrate" title=" calcium silicate hydrate"> calcium silicate hydrate</a> </p> <a href="https://publications.waset.org/abstracts/8741/comparison-of-the-hydration-products-of-commercial-and-experimental-calcium-silicate-cement-the-preliminary-observational-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8741.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">265</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">1184</span> The Study of Aluminum Effects Layer Austenite Twins Adjacent to K-Carbide Plates in the Cellular Structure of a Mn-Al Alloy Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wu%20Wei-Ting">Wu Wei-Ting</a>, <a href="https://publications.waset.org/abstracts/search?q=Liu%20Po-Yen"> Liu Po-Yen</a>, <a href="https://publications.waset.org/abstracts/search?q=Chang%20Chin-Tzu"> Chang Chin-Tzu</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng%20Wei-Chun"> Cheng Wei-Chun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Three types of low-temperature phase transformations in an Fe-12.5 Mn-6.53 Al-1.28 C (wt %) alloy have been studied. The steel underwent solution heat treatment at 1100℃ and isothermal holding at low temperatures. γ’ phase appears in the austenite matrix in the air-cooled steel. Coherent ultra-fine particles of γ’ phase precipitated uniformly in the austenite matrix after the air-cooling process. These ultra-fine particles were very small and only could be detected by TEM through dark-field images. After short periods of isothermal holding at low temperatures these particles of γ’ phase grew and could be easily detected by TEM. A pro-eutectoid reaction happened after isothermal holding at temperatures below 875 ℃. Proeutectoid κ-carbide and ferrite appear in the austenite matrix as grain boundary precipitates and cellular precipitates. The cellular precipitates are composed of lamellar κ-carbide and austenite. The lamellar κ-carbide grains are always accompanied by layers of austenite twins. The presence of twin layers adhering to the κ-carbide plates might be attributed to the lower activation energy for the precipitation of κ-carbide plates in the austenite. The final form of phase transformation is the eutectoid reaction for the decomposition of supersaturated austenite into stable κ-carbide and ferrite phases at temperatures below 700℃. The ferrite and κ-carbide are in the form of pearlite lamellae. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=austenite" title="austenite">austenite</a>, <a href="https://publications.waset.org/abstracts/search?q=austenite%20twin%20layers" title=" austenite twin layers"> austenite twin layers</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%BA-carbide" title=" κ-carbide"> κ-carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=twins" title=" twins"> twins</a> </p> <a href="https://publications.waset.org/abstracts/72110/the-study-of-aluminum-effects-layer-austenite-twins-adjacent-to-k-carbide-plates-in-the-cellular-structure-of-a-mn-al-alloy-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72110.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">227</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1183</span> A Novel Eccentric Lapping Method with Two Rotatable Lapping Plates for Finishing Cemented Carbide Balls</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20C.%20Lv">C. C. Lv</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20L.%20Sun"> Y. L. Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20W.%20Zuo"> D. W. Zuo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cemented carbide balls are usually implemented in industry under the environment of high speed, high temperature, corrosiveness and strong collisions. However, its application is limited due to high fabrication cost, processing efficiency and quality. A novel eccentric lapping method with two rotatable lapping plates was proposed in this paper. A mathematical model was constructed to analyze the influence of each design parameter on this lapping method. To validate this new lapping method, an orthogonal experiment was conducted with cemented carbide balls (YG6). The simulation model was verified and the optimal lapping parameters were derived. The results show that the surface roundness of the balls reaches to 0.65um from 2um in 1 hour using this lapping method. So, using this novel lapping method, it can effectively improve the machining precision and efficiency of cemented carbide balls. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cemented%20carbide%20balls" title="cemented carbide balls">cemented carbide balls</a>, <a href="https://publications.waset.org/abstracts/search?q=eccentric%20lapping" title=" eccentric lapping"> eccentric lapping</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20precision" title=" high precision"> high precision</a>, <a href="https://publications.waset.org/abstracts/search?q=lapping%20tracks" title=" lapping tracks"> lapping tracks</a>, <a href="https://publications.waset.org/abstracts/search?q=V-groove" title=" V-groove"> V-groove</a> </p> <a href="https://publications.waset.org/abstracts/20023/a-novel-eccentric-lapping-method-with-two-rotatable-lapping-plates-for-finishing-cemented-carbide-balls" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20023.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">394</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">1182</span> Can Bone Resorption Reduce with Nanocalcium Particles in Astronauts?</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ravi%20Teja%20Mandapaka">Ravi Teja Mandapaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Prasanna%20Kumar%20Kukkamalla"> Prasanna Kumar Kukkamalla</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Poor absorption of calcium, elevated levels in serum and loss of bone are major problems of astronauts during space travel. Supplementation of calcium could not reveal this problem. In normal condition only 33% of calcium is absorbed from dietary sources. In this paper effect of space environment on calcium metabolism was discussed. Many surprising study findings were found during literature survey. Clinical trials on ovariectomized mice showed that reduction of calcium particles to nano level make them more absorbable and bioavailable. Control of bone loss in astronauts in critical important In Fortification of milk with nana calcium particles showed reduces urinary pyridinoline, deoxypyridinoline levels. Dietary calcium and supplementation do not show much retention of calcium in zero gravity environment where absorption is limited. So, the fortification of foods with nano calcium particles seemed beneficial for astronauts during and after space travel in their speedy recovery. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nano%20calcium" title="nano calcium">nano calcium</a>, <a href="https://publications.waset.org/abstracts/search?q=astronauts" title=" astronauts"> astronauts</a>, <a href="https://publications.waset.org/abstracts/search?q=fortification" title=" fortification"> fortification</a>, <a href="https://publications.waset.org/abstracts/search?q=supplementation" title=" supplementation"> supplementation</a> </p> <a href="https://publications.waset.org/abstracts/30899/can-bone-resorption-reduce-with-nanocalcium-particles-in-astronauts" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30899.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">1181</span> Theoretical Method for Full Ab-Initio Calculation of Rhenium Carbide Compound</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.Rached">D.Rached</a>, <a href="https://publications.waset.org/abstracts/search?q=M.Rabah"> M.Rabah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> First principles calculations are carried out to investigate the structural, electronic, and elastic properties of the utraincompressible materials, namely, noble metal carbide of Rhenium carbide (ReC) in four phases, the rocksalt (NaCl-B1), zinc blende (ZB-B2), the tungsten carbide(Bh) (WC), and the nickel arsenide (NiAs-B8).The ground state properties such as the equilibrium lattice constant, elastic constants, the bulk modulus its pressure derivate, and the hardness of ReC in these phases are systematically predicted by calculations from first–principles. The corresponding calculated bulk modulus is comparable with that of diamond, especially for the B8 –type rhenium carbide (ReC), the incompressibility along the c axis is demonstrated to exceed the linear incompressibility of diamond. Our calculations confirm in the nickel arsenide (B8) structure the ReC is found to be stable with a large bulk modulus B=440 GPa and the tungsten carbide (WC) structure becomes the most more favourable with to respect B3 and B1 structures, which ReC- WC is meta-stable. Furthermore, the highest bulk modulus values in the zinc blende (B3), rock salt (B1), tungsten carbide (WC), and the nickel arsenide (B8) structures (294GPa, 401GPa, 415GPa and 447 GPa, respectively) indicates that ReC is a hard material, and is superhard compound H(B8)= 36 GPa compared with the H(diamond)=96 GPa and H(c BN)=63.10 GPa. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DFT" title="DFT">DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=FP-LMTO" title=" FP-LMTO"> FP-LMTO</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=elasticity" title=" elasticity"> elasticity</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20pressure" title=" high pressure"> high pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20properties" title=" thermodynamic properties"> thermodynamic properties</a>, <a href="https://publications.waset.org/abstracts/search?q=hard%20material" title=" hard material"> hard material</a> </p> <a href="https://publications.waset.org/abstracts/13995/theoretical-method-for-full-ab-initio-calculation-of-rhenium-carbide-compound" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13995.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">441</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">1180</span> Numerical Model to Study Calcium and Inositol 1,4,5-Trisphosphate Dynamics in a Myocyte Cell</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nisha%20Singh">Nisha Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Neeru%20Adlakha"> Neeru Adlakha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Calcium signalling is one of the most important intracellular signalling mechanisms. A lot of approaches and investigators have been made in the study of calcium signalling in various cells to understand its mechanisms over recent decades. However, most of existing investigators have mainly focussed on the study of calcium signalling in various cells without paying attention to the dependence of calcium signalling on other chemical ions like inositol-1; 4; 5 triphosphate ions, etc. Some models for the independent study of calcium signalling and inositol-1; 4; 5 triphosphate signalling in various cells are present but very little attention has been paid by the researchers to study the interdependence of these two signalling processes in a cell. In this paper, we propose a coupled mathematical model to understand the interdependence of inositol-1; 4; 5 triphosphate dynamics and calcium dynamics in a myocyte cell. Such studies will provide the deeper understanding of various factors involved in calcium signalling in myocytes, which may be of great use to biomedical scientists for various medical applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=calcium%20signalling" title="calcium signalling">calcium signalling</a>, <a href="https://publications.waset.org/abstracts/search?q=coupling" title=" coupling"> coupling</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20difference%20method" title=" finite difference method"> finite difference method</a>, <a href="https://publications.waset.org/abstracts/search?q=inositol%201" title=" inositol 1"> inositol 1</a>, <a href="https://publications.waset.org/abstracts/search?q=4" title=" 4"> 4</a>, <a href="https://publications.waset.org/abstracts/search?q=5-triphosphate" title=" 5-triphosphate"> 5-triphosphate</a> </p> <a href="https://publications.waset.org/abstracts/68214/numerical-model-to-study-calcium-and-inositol-145-trisphosphate-dynamics-in-a-myocyte-cell" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68214.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">292</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">1179</span> Conservation Agriculture in North America</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ying%20Chen">Ying Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Conservation Agriculture in a sustainable way of farming, as it brings many benefits, such as preventing soil from erosion and degradation, improving soil health, conserving energy, and sequestrating carbon. However, adoption of conservation agriculture has been progressing slowly in some part of the world due to some challenges. Among them, seeding in heavy crop residue is challenging, especially in corn production systems. Weed control is also challenging in conservation agriculture. This research aimed to investigate some technologies that can address these challenges. For crop residue management, vertical tillage and vertical seeding have been studied in multiple research projects. Results showed that vertical tillage and seeding were able to deal with crop residue through cutting residue into small segments, which would not plug seeder in the sub-sequent seeding. Vertical tillage is a conservation tillage system, as it leaves more than 30% crop residue on soil surface while incorporating some residue into the shallow soil layer for fast residue decomposition. For weed control, mechanical weeding can reduce chemical inputs in crop production. A tine weeder was studied for weed control during the early growing season of several field crops (corn, soybean, flax, and pea). Detail results of these studies will be shared at the conference. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tillage" title="tillage">tillage</a>, <a href="https://publications.waset.org/abstracts/search?q=seeding" title=" seeding"> seeding</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20weeding" title=" mechanical weeding"> mechanical weeding</a>, <a href="https://publications.waset.org/abstracts/search?q=crop%20residue" title=" crop residue"> crop residue</a> </p> <a href="https://publications.waset.org/abstracts/172388/conservation-agriculture-in-north-america" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/172388.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">75</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">1178</span> Determination of Carbofuran Residue in Brinjal (Solanum melongena L.) and Soil of Brinjal Field</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Islam">R. Islam</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Haque"> M. A. Haque</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20H.%20Kabir"> K. H. Kabir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A supervised trail was set with brinjal at research field, Entomology Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur to determine the residue of Carbofuran in soil and fruit samples at different days after application (DAA) of Furadan 5 G @ 2 kg AI/ ha. Field collected samples were analyzed by GCMS-EI. Results of the experiment indicated the presence of Carbofuran residue up to 60 DAA in soil samples and 25 DAA in brinjal fruit samples. In case of soil samples, the detected residues were 7.04, 2.78, 0.79, 0.43, 0.12, 0.06 and 0.05 ppm at 0, 2, 5, 10, 20, 30 and 60 DAA respectively. On the other hand, in brinjal fruit samples Carbofuran residues were 0.005 ppm, 0.095 ppm, 0.084 ppm, 0.065 ppm, 0.063 ppm, 0.056 ppm, 0.050 ppm, 0.030 ppm and 0.016 ppm at 0, 2, 4, 6, 8, 10, 12, 15 and 25-DAA, respectively. None of this amount was above the recommended MRL (0.1 mg / kg crop) of Carborufan for agricultural crops. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=brinjal" title="brinjal">brinjal</a>, <a href="https://publications.waset.org/abstracts/search?q=carbofuran" title=" carbofuran"> carbofuran</a>, <a href="https://publications.waset.org/abstracts/search?q=MRL" title=" MRL"> MRL</a>, <a href="https://publications.waset.org/abstracts/search?q=residue" title=" residue"> residue</a> </p> <a href="https://publications.waset.org/abstracts/29583/determination-of-carbofuran-residue-in-brinjal-solanum-melongena-l-and-soil-of-brinjal-field" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29583.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">511</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">1177</span> Effect of Alloying Elements on Particle Incorporation of Boron Carbide Reinforced Aluminum Matrix Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Steven%20Ploetz">Steven Ploetz</a>, <a href="https://publications.waset.org/abstracts/search?q=Andreas%20Lohmueller"> Andreas Lohmueller</a>, <a href="https://publications.waset.org/abstracts/search?q=Robert%20F.%20Singer"> Robert F. Singer</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The outstanding performance of aluminum matrix composites (AMCs) regarding stiffness/weight ratio makes AMCs attractive material for lightweight construction. Low-density boride compounds promise simultaneously an increase in stiffness and decrease in composite density. This is why boron carbide is chosen for composite manufacturing. The composites are fabricated with the stir casting process. To avoid gas entrapment during mixing and ensure nonporous composites, partial vacuum is adapted during particle feeding and stirring. Poor wettability of boron carbide with liquid aluminum hinders particle incorporation, but alloying elements such as magnesium and titanium could improve wettability and thus particle incorporation. Next to alloying elements, adapted stirring parameters and impeller geometries improve particle incorporation and enable homogenous particle distribution and high particle volume fractions of boron carbide. AMCs with up to 15 vol.% of boron carbide particles are produced via melt stirring, resulting in an increase in stiffness and strength. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aluminum%20matrix%20composites" title="aluminum matrix composites">aluminum matrix composites</a>, <a href="https://publications.waset.org/abstracts/search?q=boron%20carbide" title=" boron carbide"> boron carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=stiffness" title=" stiffness"> stiffness</a>, <a href="https://publications.waset.org/abstracts/search?q=stir%20casting" title=" stir casting"> stir casting</a> </p> <a href="https://publications.waset.org/abstracts/64924/effect-of-alloying-elements-on-particle-incorporation-of-boron-carbide-reinforced-aluminum-matrix-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/64924.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">308</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">1176</span> Effect of Flux Salts on the Recovery Extent and Quality of Metal Values from Spent Rechargeable Lead Batteries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahmoud%20A%20Rabah">Mahmoud A Rabah</a>, <a href="https://publications.waset.org/abstracts/search?q=Sabah%20M.%20Abelbasir"> Sabah M. Abelbasir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Lead-calcium alloy containing up to 0.10% calcium was recovered from spent rechargeable sealed acid lead batteries. Two techniques were investigated to explore the effect of flux salts on the extent and quality of the recovered alloy, pyro-metallurgical and electrochemical methods. About 10 kg of the spent batteries were collected for testing. The sample was washed with hot water and dried. The plastic cases of the batteries were mechanically cut, and the contents were dismantled manually, the plastic containers were shredded for recycling. The electrode plates were freed from the loose powder and placed in SiC crucible and covered with alkali chloride salts. The loaded crucible was heated in an electronically controlled chamber furnace type Nabertherm C3 at temperatures up to 800 °C. The obtained metals were analyzed. The effect of temperature, rate of heating, atmospheric conditions, composition of the flux salts on the extent and quality of the recovered products were studied. Results revealed that the spent rechargeable batteries contain 6 blocks of 6 plates of Pb-Ca alloy each. Direct heating of these plates in a silicon carbide crucible under ambient conditions produces lead metal poor in calcium content ( < 0.07%) due to partial oxidation of the alloying calcium element. Rate of temperature increase has a considerable effect on the yield of the lead alloy extraction. Flux salts composition benefits the recovery process. Sodium salts are more powerful as compared to potassium salts. Lead calcium alloy meeting the standard specification was successfully recovered from the spent rechargeable acid lead batteries with a very competitive cost to the same alloy prepared from primary resources. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rechargeable%20lead%20batteries" title="rechargeable lead batteries">rechargeable lead batteries</a>, <a href="https://publications.waset.org/abstracts/search?q=lead-calcium%20alloy" title=" lead-calcium alloy"> lead-calcium alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20recovery" title=" waste recovery"> waste recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=flux%20salts" title=" flux salts"> flux salts</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20recovery" title=" thermal recovery"> thermal recovery</a> </p> <a href="https://publications.waset.org/abstracts/78511/effect-of-flux-salts-on-the-recovery-extent-and-quality-of-metal-values-from-spent-rechargeable-lead-batteries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78511.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">373</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1175</span> Generalized Model Estimating Strength of Bauxite Residue-Lime Mix</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sujeet%20Kumar">Sujeet Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Arun%20Prasad"> Arun Prasad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present work investigates the effect of multiple parameters on the unconfined compressive strength of the bauxite residue-lime mix. A number of unconfined compressive strength tests considering various curing time, lime content, dry density and moisture content were carried out. The results show that an empirical correlation may be successfully developed using volumetric lime content, porosity, moisture content, curing time unconfined compressive strength for the range of the bauxite residue-lime mix studied. The proposed empirical correlations efficiently predict the strength of bauxite residue-lime mix, and it can be used as a generalized empirical equation to estimate unconfined compressive strength. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bauxite%20residue" title="bauxite residue">bauxite residue</a>, <a href="https://publications.waset.org/abstracts/search?q=curing%20time" title=" curing time"> curing time</a>, <a href="https://publications.waset.org/abstracts/search?q=porosity%2Fvolumetric%20lime%20ratio" title=" porosity/volumetric lime ratio"> porosity/volumetric lime ratio</a>, <a href="https://publications.waset.org/abstracts/search?q=unconfined%20compressive%20strength" title=" unconfined compressive strength"> unconfined compressive strength</a> </p> <a href="https://publications.waset.org/abstracts/80378/generalized-model-estimating-strength-of-bauxite-residue-lime-mix" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80378.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">236</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">1174</span> Friction Behavior of Wood-Plastic Composites against Uncoated Cemented Carbide</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Almontas%20Vilutis">Almontas Vilutis</a>, <a href="https://publications.waset.org/abstracts/search?q=Vytenis%20Jankauskas"> Vytenis Jankauskas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper presents the results of the investigation of the dry sliding friction of wood-plastic composites (WPCs) against WC-Co cemented carbide. The dependence of the dynamic coefficient of friction on the main influencing factors (vertical load, temperature, and sliding distance) was investigated by evaluating their mutual interaction. Multiple regression analysis showed a high polynomial dependence (adjusted R2 > 0.98). The resistance of the composite to thermo-mechanical effects determines how temperature and force factors affect the magnitude of the coefficient of friction. WPC-B composite has the lowest friction and highest resistance compared to WPC-A, while composite and cemented carbide materials wear the least. Energy dispersive spectroscopy (EDS), based on elemental composition, provided important insights into the friction process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=friction" title="friction">friction</a>, <a href="https://publications.waset.org/abstracts/search?q=composite" title=" composite"> composite</a>, <a href="https://publications.waset.org/abstracts/search?q=carbide" title=" carbide"> carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=factors" title=" factors"> factors</a> </p> <a href="https://publications.waset.org/abstracts/170669/friction-behavior-of-wood-plastic-composites-against-uncoated-cemented-carbide" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/170669.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">83</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">1173</span> Combinatory Nutrition Supplementation: A Case of Synergy for Increasing Calcium Bioavailability</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Daniel%20C.%20S.%20Lim">Daniel C. S. Lim</a>, <a href="https://publications.waset.org/abstracts/search?q=Eric%20Y.%20M.%20Yeo"> Eric Y. M. Yeo</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Y.%20Tan"> W. Y. Tan </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents an overview of how calcium interacts with the various essential nutrients within an environment of cellular and hormonal interactions for the purpose of increasing bioavailability to the human body. One example of such interactions can be illustrated with calcium homeostasis. This paper gives an in-depth discussion on the possible interactive permutations with various nutrients and factors leading to the promotion of calcium bioavailability to the body. The review hopes to provide further insights into how calcium supplement formulations can be improved to better influence its bioavailability in the human body. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioavailability" title="bioavailability">bioavailability</a>, <a href="https://publications.waset.org/abstracts/search?q=environment%20of%20cellular%20and%20hormonal%20interactions" title=" environment of cellular and hormonal interactions"> environment of cellular and hormonal interactions</a>, <a href="https://publications.waset.org/abstracts/search?q=nutritional%20combinations" title=" nutritional combinations"> nutritional combinations</a>, <a href="https://publications.waset.org/abstracts/search?q=synergistic" title=" synergistic"> synergistic</a> </p> <a href="https://publications.waset.org/abstracts/61759/combinatory-nutrition-supplementation-a-case-of-synergy-for-increasing-calcium-bioavailability" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61759.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">409</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">1172</span> Application of Recycled Tungsten Carbide Powder for Fabrication of Iron Based Powder Metallurgy Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yukinori%20Taniguchi">Yukinori Taniguchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Kazuyoshi%20Kurita"> Kazuyoshi Kurita</a>, <a href="https://publications.waset.org/abstracts/search?q=Kohei%20Mizuta"> Kohei Mizuta</a>, <a href="https://publications.waset.org/abstracts/search?q=Keigo%20Nishitani"> Keigo Nishitani</a>, <a href="https://publications.waset.org/abstracts/search?q=Ryuichi%20Fukuda"> Ryuichi Fukuda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Tungsten carbide is widely used as a tool material in metal manufacturing process. Since tungsten is typical rare metal, establishment of recycle process of tungsten carbide tools and restore into cemented carbide material bring great impact to metal manufacturing industry. Recently, recycle process of tungsten carbide has been developed and established gradually. However, the demands for quality of cemented carbide tool are quite severe because hardness, toughness, anti-wear ability, heat resistance, fatigue strength and so on should be guaranteed for precision machining and tool life. Currently, it is hard to restore the recycled tungsten carbide powder entirely as raw material for new processed cemented carbide tool. In this study, to suggest positive use of recycled tungsten carbide powder, we have tried to fabricate a carbon based sintered steel which shows reinforced mechanical properties with recycled tungsten carbide powder. We have made set of newly designed sintered steels. Compression test of sintered specimen in density ratio of 0.85 (which means 15% porosity inside) has been conducted. As results, at least 1.7 times higher in nominal strength in the amount of 7.0 wt.% was shown in recycled WC powder. The strength reached to over 600 MPa for the Fe-WC-Co-Cu sintered alloy. Wear test has been conducted by using ball-on-disk type friction tester using 5 mm diameter ball with normal force of 2 N in the dry conditions. Wear amount after 1,000 m running distance shows that about 1.5 times longer life was shown in designed sintered alloy. Since results of tensile test showed that same tendency in previous testing, it is concluded that designed sintered alloy can be used for several mechanical parts with special strength and anti-wear ability in relatively low cost due to recycled tungsten carbide powder. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tungsten%20carbide" title="tungsten carbide">tungsten carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=recycle%20process" title=" recycle process"> recycle process</a>, <a href="https://publications.waset.org/abstracts/search?q=compression%20test" title=" compression test"> compression test</a>, <a href="https://publications.waset.org/abstracts/search?q=powder%20metallurgy" title=" powder metallurgy"> powder metallurgy</a>, <a href="https://publications.waset.org/abstracts/search?q=anti-wear%20ability" title=" anti-wear ability"> anti-wear ability</a> </p> <a href="https://publications.waset.org/abstracts/51013/application-of-recycled-tungsten-carbide-powder-for-fabrication-of-iron-based-powder-metallurgy-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51013.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">250</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">1171</span> Fractional Residue Number System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Parisa%20Khoshvaght">Parisa Khoshvaght</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Hosseinzadeh"> Mehdi Hosseinzadeh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> During the past few years, the Residue Number System (RNS) has been receiving considerable interest due to its parallel and fault-tolerant properties. This system is a useful tool for Digital Signal Processing (DSP) since it can support parallel, carry-free, high-speed and low power arithmetic. One of the drawbacks of Residue Number System is the fractional numbers, that is, the corresponding circuit is very hard to realize in conventional CMOS technology. In this paper, we propose a method in which the numbers of transistors are significantly reduced. The related delay is extremely diminished, in the first glance we use this method to solve concerning problem of one decimal functional number some how this proposition can be extended to generalize the idea. Another advantage of this method is the independency on the kind of moduli. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=computer%20arithmetic" title="computer arithmetic">computer arithmetic</a>, <a href="https://publications.waset.org/abstracts/search?q=residue%20number%20system" title=" residue number system"> residue number system</a>, <a href="https://publications.waset.org/abstracts/search?q=number%20system" title=" number system"> number system</a>, <a href="https://publications.waset.org/abstracts/search?q=one-Hot" title=" one-Hot"> one-Hot</a>, <a href="https://publications.waset.org/abstracts/search?q=VLSI" title=" VLSI"> VLSI</a> </p> <a href="https://publications.waset.org/abstracts/30341/fractional-residue-number-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30341.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">495</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">1170</span> Iranian Refinery Vacuum Residue Upgrading Using Microwave Irradiation: Effects of Catalyst Type and Amount</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zarrin%20Nasri">Zarrin Nasri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Microwave irradiation is an innovative technology in the petroleum industry. This kind of energy has been considered to convert vacuum residue of oil refineries into useful products. The advantages of microwaves energy are short time, fast heating, high energy efficiency, and precise process control. In this paper, the effects of catalyst type and amount have been investigated on upgrading of vacuum residue using microwave irradiation. The vacuum residue used in this research is from Tehran oil refinery, Iran. Additives include different catalysts, active carbon as sensitizer, and sodium borohydride as a solid hydrogen donor. Various catalysts contain iron, nickel, molybdenum disulfide, iron oxide and copper. The amount of catalysts in two cases of presence and absence of sodium borohydride have been evaluated. The objective parameters include temperature, asphaltene, viscosity, and API. The specifications of vacuum residue are API, 8.79, viscosity, 16391 cSt (60°C), asphaltene, 13.3 wt %. The results show that there is a significant difference between the effects of catalysts. Among the used catalysts, Fe powder is the best catalyst for upgrading vacuum residue using microwave irradiation and resulted in asphaltene reduction, 31.3 %; viscosity reduction, 76.43 %; and 23.43 % in API increase. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=asphaltene" title="asphaltene">asphaltene</a>, <a href="https://publications.waset.org/abstracts/search?q=microwave" title=" microwave"> microwave</a>, <a href="https://publications.waset.org/abstracts/search?q=upgrading" title=" upgrading"> upgrading</a>, <a href="https://publications.waset.org/abstracts/search?q=vacuum%20residue" title=" vacuum residue"> vacuum residue</a>, <a href="https://publications.waset.org/abstracts/search?q=viscosity" title=" viscosity"> viscosity</a> </p> <a href="https://publications.waset.org/abstracts/81731/iranian-refinery-vacuum-residue-upgrading-using-microwave-irradiation-effects-of-catalyst-type-and-amount" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/81731.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">255</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">1169</span> The Study on Treatment Technology of Fused Carbonized Blast Furnace Slag</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jiaxu%20Huang">Jiaxu Huang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The melt carbonized blast furnace slag containing TiC was produced by carbothermal reduction of high titanium blast furnace slag. The treatment technology of melt carbonized blast furnace slag with TiC as raw material was studied, including the influence of different cooling methods, crushing atmosphere and sieving particle size on the target product TiC in the slag. The results show that air-cooling and water-cooling have little effect on TiC content of molten carbide blast furnace slag, and have great effect on crystal structure and grain size. TiC content in slag is different when carbide blast furnace slag is crushed in argon atmosphere and air atmosphere. After screening, the difference of TiC content of carbide blast furnace slag with different particle size distribution is obvious. The average TiC content of 100-400 mesh carbide blast furnace slag is 14%. And the average TiC content of carbide blast furnace slag with particle size less than 400 mesh is 10.5%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=crushing%20atmosphere" title="crushing atmosphere">crushing atmosphere</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20methods" title=" cooling methods"> cooling methods</a>, <a href="https://publications.waset.org/abstracts/search?q=sieving%20particle%20size" title=" sieving particle size"> sieving particle size</a>, <a href="https://publications.waset.org/abstracts/search?q=TiC" title=" TiC"> TiC</a> </p> <a href="https://publications.waset.org/abstracts/108634/the-study-on-treatment-technology-of-fused-carbonized-blast-furnace-slag" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/108634.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">135</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">1168</span> Adhesion Enhancement of Boron Carbide Coatings on Aluminum Substrates Utilizing an Intermediate Adhesive Layer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sharon%20Waichman">Sharon Waichman</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahaf%20Froim"> Shahaf Froim</a>, <a href="https://publications.waset.org/abstracts/search?q=Ido%20Zukerman"> Ido Zukerman</a>, <a href="https://publications.waset.org/abstracts/search?q=Shmuel%20Barzilai"> Shmuel Barzilai</a>, <a href="https://publications.waset.org/abstracts/search?q=Shmual%20Hayun"> Shmual Hayun</a>, <a href="https://publications.waset.org/abstracts/search?q=Avi%20Raveh"> Avi Raveh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Boron carbide is a ceramic material with superior properties such as high chemical and thermal stability, high hardness and high wear resistance. Moreover, it has a big cross section for neutron absorption and therefore can be employed in nuclear based applications. However, an efficient attachment of boron carbide to a metal such as aluminum can be very challenging, mainly because of the formation of aluminum-carbon bonds that are unstable in humid environment, the affinity of oxygen to the metal and the different thermal expansion coefficients of the two materials that may cause internal stresses and a subsequent failure of the bond. Here, we aimed to achieving a strong and a durable attachment between the boron carbide coating and the aluminum substrate. For this purpose, we applied Ti as a thin intermediate layer that provides a gradual change in the thermal expansion coefficients of the configured layers. This layer is continuous and therefore prevents the formation of aluminum-carbon bonds. Boron carbide coatings with a thickness of 1-5 µm were deposited on the aluminum substrate by pulse-DC magnetron sputtering. Prior to the deposition of the boron carbide layer, the surface was pretreated by energetic ion plasma followed by deposition of the Ti intermediate adhesive layer in a continuous process. The properties of the Ti intermediate layer were adjusted by the bias applied to the substrate. The boron carbide/aluminum bond was evaluated by various methods and complementary techniques, such as SEM/EDS, XRD, XPS, FTIR spectroscopy and Glow Discharge Spectroscopy (GDS), in order to explore the structure, composition and the properties of the layers and to study the adherence mechanism of the boron carbide/aluminum contact. Based on the interfacial bond characteristics, we propose a desirable solution for improved adhesion of boron carbide to aluminum using a highly efficient intermediate adhesive layer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesion" title="adhesion">adhesion</a>, <a href="https://publications.waset.org/abstracts/search?q=boron%20carbide%20coatings" title=" boron carbide coatings"> boron carbide coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=ceramic%2Fmetal%20bond" title=" ceramic/metal bond"> ceramic/metal bond</a>, <a href="https://publications.waset.org/abstracts/search?q=intermediate%20layer" title=" intermediate layer"> intermediate layer</a>, <a href="https://publications.waset.org/abstracts/search?q=pulsed-DC%20magnetron%20sputtering" title=" pulsed-DC magnetron sputtering"> pulsed-DC magnetron sputtering</a> </p> <a href="https://publications.waset.org/abstracts/107246/adhesion-enhancement-of-boron-carbide-coatings-on-aluminum-substrates-utilizing-an-intermediate-adhesive-layer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107246.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">164</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">1167</span> Utilization of Logging Residue to Reduce Soil Disturbance of Timber Harvesting</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Juang%20R.%20Matangaran">Juang R. Matangaran</a>, <a href="https://publications.waset.org/abstracts/search?q=Qi%20Adlan"> Qi Adlan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Industrial plantation forest in Indonesia was developed in 1983, and since then, several companies have been successfully planted a total area of concessionaire approximately 10 million hectares. Currently, these plantation forests have their annual harvesting period. In the timber harvesting process, amount part of the trees generally become logging residue. Tree parts such as branches, twigs, defected stem and leaves are unused section of tree on the ground after timber harvesting. The use of heavy machines in timber harvesting area has caused damage to the forest soil. The negative impact of such machines includes loss of topsoil, soil erosion, and soil compaction. Forest soil compaction caused reduction of forest water infiltration, increase runoff and causes difficulty for root penetration. In this study, we used logging residue as soil covers on the passages passed by skidding machines in order to observe the reduction soil compaction. Bulk density of soil was measured and analyzed after several times of skidding machines passage on skid trail. The objective of the research was to analyze the effect of logging residue on reducing soil compaction. The research was taken place at one of the industrial plantation forest area of South Sumatra Indonesia. The result of the study showed that percentage increase of soil compaction bare soil was larger than soil surface covered by logging residue. The maximum soil compaction occurred after 4 to 5 passes on soil without logging residue or bare soil and after 7 to 8 passes on soil cover by logging residue. The use of logging residue coverings could reduce soil compaction from 45% to 60%. The logging residue was effective in decreasing soil disturbance of timber harvesting at the plantation forest area. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bulk%20density" title="bulk density">bulk density</a>, <a href="https://publications.waset.org/abstracts/search?q=logging%20residue" title=" logging residue"> logging residue</a>, <a href="https://publications.waset.org/abstracts/search?q=plantation%20forest" title=" plantation forest"> plantation forest</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20compaction" title=" soil compaction"> soil compaction</a>, <a href="https://publications.waset.org/abstracts/search?q=timber%20harvesting" title=" timber harvesting"> timber harvesting</a> </p> <a href="https://publications.waset.org/abstracts/73651/utilization-of-logging-residue-to-reduce-soil-disturbance-of-timber-harvesting" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/73651.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">405</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1166</span> Sulfate Attack on Pastes Made with Different C3A and C4AF Contents and Stored at 5°C</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Konstantinos%20Sotiriadis">Konstantinos Sotiriadis</a>, <a href="https://publications.waset.org/abstracts/search?q=Rados%C5%82aw%20Mr%C3%B3z"> Radosław Mróz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present work the internal sulfate attack on pastes made from pure clinker phases was studied. Two binders were produced: (a) a binder with 2% C3A and 18% C4AF content; (b) a binder with 10% C3A and C4AF content each. Gypsum was used as the sulfate bearing compound, while calcium carbonate added to differentiate the binders produced. The phases formed were identified by XRD analysis. The results showed that ettringite was the deterioration phase detected in the case of the low C3A content binder. Carbonation occurred in the specimen without calcium carbonate addition, while portlandite was observed in the one containing calcium carbonate. In the case of the high C3A content binder, traces of thaumasite were detected when calcium carbonate was not incorporated in the binder. A solid solution of thaumasite and ettringite was found when calcium carbonate was added. The amount of C3A had not fully reacted with sulfates, since its corresponding peaks were detected. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tricalcium%20aluminate" title="tricalcium aluminate">tricalcium aluminate</a>, <a href="https://publications.waset.org/abstracts/search?q=calcium%20aluminate%20ferrite" title=" calcium aluminate ferrite"> calcium aluminate ferrite</a>, <a href="https://publications.waset.org/abstracts/search?q=sulfate%20attack" title=" sulfate attack"> sulfate attack</a>, <a href="https://publications.waset.org/abstracts/search?q=calcium%20carbonate" title=" calcium carbonate"> calcium carbonate</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20temperature" title=" low temperature"> low temperature</a> </p> <a href="https://publications.waset.org/abstracts/12814/sulfate-attack-on-pastes-made-with-different-c3a-and-c4af-contents-and-stored-at-5c" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12814.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">334</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1165</span> One Step Synthesis of Molybdenum Carbide Nanoparticles for Efficient Hydrogen Evolution Reaction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sanjay%20Upadhyay">Sanjay Upadhyay</a>, <a href="https://publications.waset.org/abstracts/search?q=Om%20Prakash%20Pandey"> Om Prakash Pandey</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hydrogen has been promoted as an alternative source of energy, which is renewable, cost-effective, and nature-friendly. Hydrogen evolution reaction (HER) can be used for mass production of hydrogen at a very low cost through electrochemical water splitting. An active and efficient electrocatalyst is required to perform this reaction. Till date, platinum (Pt) is a stable and efficient electrocatalyst towards HER. But its high cost and low abundance hiders its large scale uses. Molybdenum carbide having a similar electronic structure to platinum can be a great alternative to costly platinum. In this study, pure phase molybdenum carbide (Mo₂C) has been synthesized in a single step. Synthesis temperature and holding time have been optimized to obtain pure phases of Mo₂C. The surface, structural and morphological properties of as-synthesized compounds have been studied. The HER activity of as-synthesized compounds has been explored in detail. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=capacitance" title="capacitance">capacitance</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20fuel" title=" hydrogen fuel"> hydrogen fuel</a>, <a href="https://publications.waset.org/abstracts/search?q=molybdenum%20carbide" title=" molybdenum carbide"> molybdenum carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoparticles" title=" nanoparticles"> nanoparticles</a> </p> <a href="https://publications.waset.org/abstracts/140482/one-step-synthesis-of-molybdenum-carbide-nanoparticles-for-efficient-hydrogen-evolution-reaction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140482.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">204</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">1164</span> Mechanical Properties Analysis of Masonry Residue Mortar as Cement Replacement</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Camila%20Parodi">Camila Parodi</a>, <a href="https://publications.waset.org/abstracts/search?q=Viviana%20Letelier"> Viviana Letelier</a>, <a href="https://publications.waset.org/abstracts/search?q=Giacomo%20Moriconi"> Giacomo Moriconi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The cement industry is responsible for around a 5% of the CO2 emissions worldwide and considering that concrete is one of the most used materials in construction its total effect is important. An alternative to reduce the environmental impact of concrete production is to incorporate certain amount of residues in the dosing, limiting the replacement percentages to avoid significant losses in the mechanical properties of the final material. Previous researches demonstrate the feasibility of using brick and rust residues, separately, as a cement replacement. This study analyses the variation in the mechanical properties of mortars by incorporating masonry residue composed of clay bricks and cement mortar. In order to improve the mechanical properties of masonry residue, this was subjected to a heat treatment of 650 ° C for four hours and its effect is analyzed in this study. Masonry residue was obtained from a demolition of masonry perimetral walls. The residues were crushed and sieved and the maximum size of particles used was 75 microns. The percentages of cement replaced by masonry residue were 0%, 10%, 20% and 30%. The effect of masonry residue addition and its heat treatment in the mechanical properties of mortars is evaluated through compressive and flexural strength tests after 7, 14 and 28 curing days. Results show that increasing the amount of masonry residue used increases the losses in compressive strength and flexural strength. However, the use of up to a 20% of masonry residue, when a heat treatment is applied, allows obtaining mortars with similar compressive strength to the control mortar. Masonry residues mortars without a heat treatment show losses in compressive strengths between 15% and 27% with respect to masonry residues with heat treatment, which demonstrates the effectiveness of the heat treatment. From this analysis it can be conclude that it is possible to use up to 20% of masonry residue with heat treatment as cement replacement without significant losses in mortars mechanical properties, reducing considerably the environmental impact of the final material. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cement%20replacement" title="cement replacement">cement replacement</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20impact" title=" environmental impact"> environmental impact</a>, <a href="https://publications.waset.org/abstracts/search?q=masonry%20residue" title=" masonry residue"> masonry residue</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties%20of%20recycled%20mortars" title=" mechanical properties of recycled mortars"> mechanical properties of recycled mortars</a> </p> <a href="https://publications.waset.org/abstracts/67858/mechanical-properties-analysis-of-masonry-residue-mortar-as-cement-replacement" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67858.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">392</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1163</span> Proximate Composition, Minerals and Sensory Attributes of Cake, Cookies, Cracker, and Chin-Chin Prepared from Cassava-Gari Residue Flour </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alice%20Nwanyioma%20Ohuoba">Alice Nwanyioma Ohuoba</a>, <a href="https://publications.waset.org/abstracts/search?q=Rose%20Erdoo%20Kukwa"> Rose Erdoo Kukwa</a>, <a href="https://publications.waset.org/abstracts/search?q=Ukpabi%20Joseph%20Ukpabi"> Ukpabi Joseph Ukpabi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cassava root (Manihot esculenta) is one of the important carbohydrates containing crops in Nigeria. It is a staple food, mostly in the southern part of the country, and a source of income to farmers and processors. Cassava gari processing methods result to residue fiber (solid waste) from the sieving operation, these residue fibers ( solid wastes) can be dried and milled into flour and used to prepare cakes, cookies, crackers and chin-chin instead of being thrown away mostly on farmland or near the residential area. Flour for baking or frying may contain carbohydrates and protein (wheat flour) or rich in only carbohydrates (cassava flour). Cake, cookies, crackers, and chin-chin were prepared using the residue flour obtained from the residue fiber of cassava variety NR87184 roots, processed into gari. This study is aimed at evaluating the proximate composition, mineral content and sensory attributes of these selected snacks produced. The proximate composition results obtained showed that crackers had the lowest value in moisture (2.3390%) and fat (1.7130%), but highest in carbohydrates (85.2310%). Amongst the food products, cakes recorded the highest value in protein (8.0910%). Crude fibre values ranges from 2.5265% (cookies) to 3.4165% (crackers). The result of the mineral contents showed cookies ranking the highest in Phosphorus (65.8535 ppm) and Iron (0.1150 mg/L), Calcium (1.3800mg/L) and Potassium (7.2850 mg/L) contents, while chin-chin and crackers were lowest in Sodium ( 2.7000 mg/L). The food products were also subjected to sensory attributes evaluation by thirty member panelists using 9-hedonic scale which ranged from 1 ( dislike extremely) to 9 (like extremely). The means score obtained shows all the food products having above 7.00 (above “like moderately”). This study has shown that food products that may be functional or nutraceuticals could be prepared from the residue flour. There is a call for the use of gluten-free flour in baking due to ciliac disease and other allergic causes by gluten. Therefore local carbohydrates food crops like cassava residue flour that are gluten-free, could be the solution. In addition, this could aid cassava gari processing waste management thereby reducing post-harvest losses of cassava root. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=allergy" title="allergy">allergy</a>, <a href="https://publications.waset.org/abstracts/search?q=flour" title=" flour"> flour</a>, <a href="https://publications.waset.org/abstracts/search?q=food-products" title=" food-products"> food-products</a>, <a href="https://publications.waset.org/abstracts/search?q=gluten-free" title=" gluten-free"> gluten-free</a> </p> <a href="https://publications.waset.org/abstracts/116544/proximate-composition-minerals-and-sensory-attributes-of-cake-cookies-cracker-and-chin-chin-prepared-from-cassava-gari-residue-flour" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/116544.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">155</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1162</span> Stochastic Modeling of Secretion Dynamics in Inner Hair Cells of the Auditory Pathway</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jessica%20A.%20Soto-Bear">Jessica A. Soto-Bear</a>, <a href="https://publications.waset.org/abstracts/search?q=Virginia%20Gonz%C3%A1lez-V%C3%A9lez"> Virginia González-Vélez</a>, <a href="https://publications.waset.org/abstracts/search?q=Norma%20Casta%C3%B1eda-Villa"> Norma Castañeda-Villa</a>, <a href="https://publications.waset.org/abstracts/search?q=Amparo%20Gil"> Amparo Gil</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Glutamate release of the cochlear inner hair cell (IHC) ribbon synapse is a fundamental step in transferring sound information in the auditory pathway. Otoferlin is the calcium sensor in the IHC and its activity has been related to many auditory disorders. In order to simulate secretion dynamics occurring in the IHC in a few milliseconds timescale and with high spatial resolution, we proposed an active-zone model solved with Monte Carlo algorithms. We included models for calcium buffered diffusion, calcium-binding schemes for vesicle fusion, and L-type voltage-gated calcium channels. Our results indicate that calcium influx and calcium binding is managing IHC secretion as a function of voltage depolarization, which in turn mean that IHC response depends on sound intensity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=inner%20hair%20cells" title="inner hair cells">inner hair cells</a>, <a href="https://publications.waset.org/abstracts/search?q=Monte%20Carlo%20algorithm" title=" Monte Carlo algorithm"> Monte Carlo algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=Otoferlin" title=" Otoferlin"> Otoferlin</a>, <a href="https://publications.waset.org/abstracts/search?q=secretion" title=" secretion"> secretion</a> </p> <a href="https://publications.waset.org/abstracts/96568/stochastic-modeling-of-secretion-dynamics-in-inner-hair-cells-of-the-auditory-pathway" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96568.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">221</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">1161</span> Assessment of Trace Metal Concentration of Soils Contaminated with Carbide in Abraka, Delta State, Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=O.M.%20Agbogidi">O.M. Agbogidi</a>, <a href="https://publications.waset.org/abstracts/search?q=I.M.%20Onochie"> I.M. Onochie</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An investigation was carried out on trace metal concentration of soils contaminated with carbide in Abraka, Delta State, Nigeria in 2014 with a view to providing baseline formation on their status relative to the control plants and to the tolerable limits recommended by World standard bodies including WHO and FAO. The metals were analyzed using the Atomic Absorption Spectrophotometer which showed an elevated level when compared with the control plots. High level of metals including Fe, Pb, Zn, Cu, Cd, Ni, Cr and arsenic were recorded and these values were significantly different (P<0.05) from values obtained from the control plots. These results are indicative of the fact that carbide polluted soil had higher level of trace metals and because these metals are non-biodegradable elements in the ecosystem, a rise to their lethal levels in food chains is envisaged due to the interdependency of plants and animals stemming from soil-water organisms interrelationship. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bio-concentration" title="bio-concentration">bio-concentration</a>, <a href="https://publications.waset.org/abstracts/search?q=carbide%20contaminated%20soils" title=" carbide contaminated soils"> carbide contaminated soils</a>, <a href="https://publications.waset.org/abstracts/search?q=heavy%20metals" title=" heavy metals"> heavy metals</a>, <a href="https://publications.waset.org/abstracts/search?q=trace%20metals" title=" trace metals"> trace metals</a> </p> <a href="https://publications.waset.org/abstracts/31776/assessment-of-trace-metal-concentration-of-soils-contaminated-with-carbide-in-abraka-delta-state-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31776.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">275</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=calcium%20carbide%20residue&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=calcium%20carbide%20residue&page=3">3</a></li> <li class="page-item"><a class="page-link" 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