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Hadjoudj</title> <meta name="description" content="Search results for: Ouahiba Hadjoudj"> <meta name="keywords" content="Ouahiba Hadjoudj"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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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="Ouahiba Hadjoudj"> <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> 14</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Ouahiba Hadjoudj</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> Study of the Composition of Lipids in Different Kinds of Packaged Food Products</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zineb%20Taidirt">Zineb Taidirt</a>, <a href="https://publications.waset.org/abstracts/search?q=Fathia%20Sebahi"> Fathia Sebahi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Karim%20Guarchani"> Mohamed Karim Guarchani</a>, <a href="https://publications.waset.org/abstracts/search?q=Anissa%20Berkane"> Anissa Berkane</a>, <a href="https://publications.waset.org/abstracts/search?q=Noureddine%20Smail"> Noureddine Smail</a>, <a href="https://publications.waset.org/abstracts/search?q=Ouahiba%20Hadjoudj"> Ouahiba Hadjoudj</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cardiovascular diseases are one of the most important causes of death in Algeria. Several risk factors are responsible for this, including the consumption of foods containing saturated fat and trans fatty acids TFAs. This brief presents the results of a descriptive study of the lipid composition of 251 food products marketed in Algeria. The objective of the study is to describe the nature and composition of lipids and to verify the compliance of saturated and trans fatty acids intakes with the regulations. The study is based on data from the nutrition labelling of marketed food products. The results showed that the lipids in foodstuffs are diverse in nature and of varying amounts, but their nature is not specified on all products. In addition, the required content of saturated fatty acids is mentioned only in 29.48% of the products; 21.62% of them do not comply with the standard. Hydrogenation of fats, which produced Trans fatty acids, is common: 19.92% of products contain hydrogenated fats, and 74.89% may contain them according to the aspect of the lipid (solid fat). However, the trans fatty acid content is only mentioned in 5.18% of the products. The latter is above the limits set by Algerian regulations in 50% of the butter samples studied. The composition of lipids in mono- and polyunsaturated fatty acids essential for the body is insufficient: only 13.94% of the products inform their contents on their labels. It is necessary to adopt mandatory restriction of trans fatty acids, to ban the use of partially-hydrogenated oils, and to require required mandatory labeling of the TFAs and the other fatty acids on packaged foods, and to conduct more studies in order to appreciate the intake of TFAs and saturated fat and appreciate their effects on the Algerian population and to get more informed about the composition of the lipid in packaged foods. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cardiovascular%20diseases" title="cardiovascular diseases">cardiovascular diseases</a>, <a href="https://publications.waset.org/abstracts/search?q=lipids" title=" lipids"> lipids</a>, <a href="https://publications.waset.org/abstracts/search?q=nutrition%20labelling" title=" nutrition labelling"> nutrition labelling</a>, <a href="https://publications.waset.org/abstracts/search?q=lipids" title=" lipids"> lipids</a>, <a href="https://publications.waset.org/abstracts/search?q=trans%20fatty%20acids" title=" trans fatty acids"> trans fatty acids</a> </p> <a href="https://publications.waset.org/abstracts/130716/study-of-the-composition-of-lipids-in-different-kinds-of-packaged-food-products" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130716.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">127</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">13</span> Synthesis and Characterisation of New Heteropolyanion Substitute by CO2+ </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ouahiba%20Bechiri">Ouahiba Bechiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostefa%20Abbessi"> Mostefa Abbessi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent year, polyoxometallates are intensely being explored because of their applications as new materiels, structural aesthetics, catalysts, and biologically active compounds. heteropolyanions of general formulae [X2M18O62] n- (X= heteroatom, e.g. P, Si) and (M=W, Mo), known as Dawson-type anions, constitue a special class of polyoxometallate compounds. In this present work, cobalt substituted heteropolyanion Dawson-type [HP2W15Mo3CoO61] were synthesized and characterized by IR spectroscopy, 31 P NMR, cyclic voltammetry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heteropolyanions" title="heteropolyanions">heteropolyanions</a>, <a href="https://publications.waset.org/abstracts/search?q=nanomaterials" title=" nanomaterials"> nanomaterials</a>, <a href="https://publications.waset.org/abstracts/search?q=Dawson-type" title=" Dawson-type"> Dawson-type</a>, <a href="https://publications.waset.org/abstracts/search?q=characterization" title=" characterization"> characterization</a> </p> <a href="https://publications.waset.org/abstracts/47058/synthesis-and-characterisation-of-new-heteropolyanion-substitute-by-co2" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47058.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">249</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">12</span> Evaluation of Salt Content in Bread and the Amount Intake by Hypertensive Patients in the Algiers Region</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.lanasri">S.lanasri</a>, <a href="https://publications.waset.org/abstracts/search?q=A.Boudjerrane"> A.Boudjerrane</a>, <a href="https://publications.waset.org/abstracts/search?q=R.Belgherbi"> R.Belgherbi</a>, <a href="https://publications.waset.org/abstracts/search?q=O.Hadjoudj"> O.Hadjoudj</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Bread is the most popular food in Algeria. The aim of this study was to examine the consumption of salt from bread by hypertensive patients. Materials and methods: sixty breads were collected from different artisans Algiers bakeries, each sample was mixed in harm distilled water until homogeneous and filtered. Analysis of the salt content was carried out according to the Mohr method titration. We calculated the amount of salt in bread consumed by 100 hypertensive patients using a questionnaire about the average amount of bread per day. Results: The salt content values from bread were 3.4g 卤 0.37 NaCl / 100g.The average amount of salt consumed per day by patients from only bread was 3.82 g 卤 3.8 with a maximum of 17 g per day. Only 38.18% of patients consume bread without salt even then 95% knew that excess salt intake can complicate hypertension. Conclusion: This study showed that bread is a major contributor to salt intake by Algerian hypertensive patients. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=salt" title="salt">salt</a>, <a href="https://publications.waset.org/abstracts/search?q=bread" title=" bread"> bread</a>, <a href="https://publications.waset.org/abstracts/search?q=hypertensive%20patients" title=" hypertensive patients"> hypertensive patients</a>, <a href="https://publications.waset.org/abstracts/search?q=Algiers" title=" Algiers"> Algiers</a> </p> <a href="https://publications.waset.org/abstracts/117913/evaluation-of-salt-content-in-bread-and-the-amount-intake-by-hypertensive-patients-in-the-algiers-region" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/117913.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">151</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> Mechanical Behavior of 16NC6 Steel Hardened by Burnishing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Litim%20Tarek">Litim Tarek</a>, <a href="https://publications.waset.org/abstracts/search?q=Taamallah%20Ouahiba"> Taamallah Ouahiba</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work relates to the physico-geometrical aspect of the surface layers of 16NC6 steel having undergone the burnishing treatment by hard steel ball. The results show that the optimal effects of burnishing are closely linked to the shape and the material of the active part of the device as well as to the surface plastic deformation ability of the material to be treated. Thus the roughness is improved by more than 70%, and the consolidation rate is increased by 30%. In addition, modeling of the rational traction curves provides a work hardening coefficient of up to 0.3 in the presence of burnishing. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=16NC6%20steel" title="16NC6 steel">16NC6 steel</a>, <a href="https://publications.waset.org/abstracts/search?q=burnishing" title=" burnishing"> burnishing</a>, <a href="https://publications.waset.org/abstracts/search?q=hardening" title=" hardening"> hardening</a>, <a href="https://publications.waset.org/abstracts/search?q=roughness" title=" roughness"> roughness</a> </p> <a href="https://publications.waset.org/abstracts/128582/mechanical-behavior-of-16nc6-steel-hardened-by-burnishing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128582.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">10</span> Burnishing Effect on the Mechanical Characteristics of 100C6</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ouahiba%20Taamallah">Ouahiba Taamallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Litim"> Tarek Litim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work relates to the physico-geometrical aspect of the surface layers of 100C6 steel having undergone the burnishing treatment by hard steel ball. The application of tip diamond burnishing promotes better roughness compared to turning. In addition, it allows the surface layers to be consolidated by work hardening phenomena. The optimal effects are closely related to the parameters of the treatment and the active part of the device. With an 80% improvement in roughness resulting from the treatment, burnishing can be defined as a finishing operation within the machining range. With a 40% gain in consolidation rate, this treatment is an efficient process for material consolidation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=100C6%20steel" title="100C6 steel">100C6 steel</a>, <a href="https://publications.waset.org/abstracts/search?q=burnishing" title=" burnishing"> burnishing</a>, <a href="https://publications.waset.org/abstracts/search?q=hardening" title=" hardening"> hardening</a>, <a href="https://publications.waset.org/abstracts/search?q=roughness" title=" roughness"> roughness</a> </p> <a href="https://publications.waset.org/abstracts/128581/burnishing-effect-on-the-mechanical-characteristics-of-100c6" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128581.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">156</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">9</span> The Mitidja between Drought and Water Pollution</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aziez%20Ouahiba">Aziez Ouahiba</a>, <a href="https://publications.waset.org/abstracts/search?q=Remini%20Boualam"> Remini Boualam</a>, <a href="https://publications.waset.org/abstracts/search?q=Habi%20Mohamed"> Habi Mohamed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> the growth and the development of a pay are strongly related to the existence or the absence of water in this area, The sedentary lifestyle of the population makes that water demand is increasing and the different brandishing (dams, tablecloths or other) are increasingly solicited. In normal time rain and snow of the winter period reloads the slicks and the wadis that fill dams. Over these two decades, global warming fact that temperature is increasingly high and rainfall is increasingly low which induces a charge less and less important tablecloths, add to that the strong demand in irrigation. Our study will focus on the variation of rainfall and irrigation, their effects on the degree of pollution of the groundwater in this area based on statistical analyses by the Xlstat (ACP, correlation...) software for a better explanation of these results and determine the hydrochemistry of different groups or polluted areas pou be able to offer adequate solutions for each area. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rainfall" title="rainfall">rainfall</a>, <a href="https://publications.waset.org/abstracts/search?q=groundwater%20of%20mitidja" title=" groundwater of mitidja"> groundwater of mitidja</a>, <a href="https://publications.waset.org/abstracts/search?q=irrigation" title=" irrigation"> irrigation</a>, <a href="https://publications.waset.org/abstracts/search?q=pollution" title=" pollution "> pollution </a> </p> <a href="https://publications.waset.org/abstracts/25749/the-mitidja-between-drought-and-water-pollution" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25749.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">400</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">8</span> Protection and Safeguarding of Groundwater in Algeria between Law and Right to Use</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aziez%20Ouahiba">Aziez Ouahiba</a>, <a href="https://publications.waset.org/abstracts/search?q=Remini%20Boualem"> Remini Boualem</a>, <a href="https://publications.waset.org/abstracts/search?q=Habi%20Mohamed"> Habi Mohamed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The growth and the development of a pay are strongly related to the existence or the absence of water in this area, the sedentary lifestyle of the population makes that water demand is increasing and the different brandishing (dams, tablecloths or other) are increasingly solicited. In normal time rain and snow of the winter period reloads the slicks and the wadis that fill dams. Over these two decades, Global warming fact that temperature is increasingly high and rainfall is increasingly low, which induces a charge less and less important tablecloths, add to that the strong demand in irrigation. Our study will focus on the variation of rainfall and irrigation, Their effects on the degree of pollution of the groundwater in this area based on statistical analyses by the Xlstat (ACP, correlation...) software for a better explanation of these results and determine the hydrochemistry of different groups or polluted areas pou be able to offer adequate solutions for each area. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=water%20in%20the%20basement" title="water in the basement">water in the basement</a>, <a href="https://publications.waset.org/abstracts/search?q=legislation" title=" legislation"> legislation</a>, <a href="https://publications.waset.org/abstracts/search?q=over%20exploitation" title=" over exploitation"> over exploitation</a>, <a href="https://publications.waset.org/abstracts/search?q=pollution" title=" pollution"> pollution</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20prices" title=" water prices"> water prices</a> </p> <a href="https://publications.waset.org/abstracts/25746/protection-and-safeguarding-of-groundwater-in-algeria-between-law-and-right-to-use" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25746.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">382</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">7</span> Mathematical Modeling and Optimization of Burnishing Parameters for 15NiCr6 Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Litim">Tarek Litim</a>, <a href="https://publications.waset.org/abstracts/search?q=Ouahiba%20Taamallah"> Ouahiba Taamallah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present paper is an investigation of the effect of burnishing on the surface integrity of a component made of 15NiCr6 steel. This work shows a statistical study based on regression, and Taguchi's design has allowed the development of mathematical models to predict the output responses as a function of the technological parameters studied. The response surface methodology (RSM) showed a simultaneous influence of the burnishing parameters and observe the optimal processing parameters. ANOVA analysis of the results resulted in the validation of the prediction model with a determination coefficient R=90.60% and 92.41% for roughness and hardness, respectively. Furthermore, a multi-objective optimization allowed to identify a regime characterized by P=10kgf, i=3passes, and f=0.074mm/rev, which favours minimum roughness and maximum hardness. The result was validated by the desirability of D= (0.99 and 0.95) for roughness and hardness, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=15NiCr6%20steel" title="15NiCr6 steel">15NiCr6 steel</a>, <a href="https://publications.waset.org/abstracts/search?q=burnishing" title=" burnishing"> burnishing</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20integrity" title=" surface integrity"> surface integrity</a>, <a href="https://publications.waset.org/abstracts/search?q=Taguchi" title=" Taguchi"> Taguchi</a>, <a href="https://publications.waset.org/abstracts/search?q=RSM" title=" RSM"> RSM</a>, <a href="https://publications.waset.org/abstracts/search?q=ANOVA" title=" ANOVA"> ANOVA</a> </p> <a href="https://publications.waset.org/abstracts/140713/mathematical-modeling-and-optimization-of-burnishing-parameters-for-15nicr6-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140713.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">191</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">6</span> Preliminary Phytochemical Screening, Analysis of Phenolic Compounds and Antioxidant Activity of Genista cephalantha Spach. (Fabaceae)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chebbah%20Kaoutar">Chebbah Kaoutar</a>, <a href="https://publications.waset.org/abstracts/search?q=Marchioni%20Eric"> Marchioni Eric</a>, <a href="https://publications.waset.org/abstracts/search?q=Menad%20Ahmed"> Menad Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Mekkiou%20Ratiba"> Mekkiou Ratiba</a>, <a href="https://publications.waset.org/abstracts/search?q=Sarri%20Djamel"> Sarri Djamel</a>, <a href="https://publications.waset.org/abstracts/search?q=Ameddah%20Souad"> Ameddah Souad</a>, <a href="https://publications.waset.org/abstracts/search?q=Boumaza%20Ouahiba"> Boumaza Ouahiba</a>, <a href="https://publications.waset.org/abstracts/search?q=Seghiri%20Ramdane"> Seghiri Ramdane</a>, <a href="https://publications.waset.org/abstracts/search?q=Benayache%20Samir"> Benayache Samir</a>, <a href="https://publications.waset.org/abstracts/search?q=Benayache%20Fadila"> Benayache Fadila </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study was designed to estabilish a preliminary phytochemical screening, evaluate the phenolic and flavonoid content according to the Folin-Ciocalteu procedure, and aluminum chloride method respectively and to determine qualitatively, using HPLC-UV method, the most important products present in ethyl acetate (EtOAc) and n-butanol (n-BuOH) extracts of the aerial parts of Genista cephalantha Spach. from East Algeria. The antioxidant activity of these extracts was spectrophotometrically tested by measuring their ability to scavenge a stable DPPH free radical and by 尾-Carotene/linoleic acid bleaching assay. Evaluated extracts showed a good activity in both antioxidant system assays. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phenolic%20compounds" title="phenolic compounds">phenolic compounds</a>, <a href="https://publications.waset.org/abstracts/search?q=flavonoids" title=" flavonoids"> flavonoids</a>, <a href="https://publications.waset.org/abstracts/search?q=HPLC-DAD-UV" title=" HPLC-DAD-UV"> HPLC-DAD-UV</a>, <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20activity" title=" antioxidant activity"> antioxidant activity</a>, <a href="https://publications.waset.org/abstracts/search?q=genista%20cephalantha" title=" genista cephalantha"> genista cephalantha</a>, <a href="https://publications.waset.org/abstracts/search?q=fabaceae" title=" fabaceae "> fabaceae </a> </p> <a href="https://publications.waset.org/abstracts/12218/preliminary-phytochemical-screening-analysis-of-phenolic-compounds-and-antioxidant-activity-of-genista-cephalantha-spach-fabaceae" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12218.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">531</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">5</span> A Homogeneous Catalytic System for Decolorization of a Mixture of Orange G Acid and Naphthol Blue-Black Dye Based on Hydrogen Peroxide and a Recyclable DAWSON Type Heteropolyanion</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ouahiba%20Bechiri">Ouahiba Bechiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostefa%20Abbessi"> Mostefa Abbessi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The color removal from industrial effluents is a major concern in wastewater treatment. The main objective of this work was to study the decolorization of a mixture of Orange G acid (OG) and naphthol blue black dye (NBB) in aqueous solution by hydrogen peroxide using [H1,5Fe1,5P2W12Mo6O61,23H2O] as catalyst. [H1,5Fe1,5P2 W12Mo6O61,23H2O] is a recyclable DAWSON type heteropolyanion. Effects of various experimental parameters of the oxidation reaction of the dye were investigated. The studied parameters were: the initial pH, H2O2 concentration, the catalyst mass and the temperature. The optimum conditions had been determined, and it was found that efficiency of degradation obtained after 15 minutes of reaction was about 100%. The optimal parameters were: initial pH = 3; [H2O2]0 = 0.08 mM; catalyst mass = 0.05g; for a concentration of dyes = 30mg/L. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dawson%20type%20heteropolyanion" title="Dawson type heteropolyanion">Dawson type heteropolyanion</a>, <a href="https://publications.waset.org/abstracts/search?q=naphthol%20blue-black" title=" naphthol blue-black"> naphthol blue-black</a>, <a href="https://publications.waset.org/abstracts/search?q=dye%20degradation" title=" dye degradation"> dye degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=orange%20G%20acid" title=" orange G acid"> orange G acid</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20peroxide" title=" hydrogen peroxide"> hydrogen peroxide</a> </p> <a href="https://publications.waset.org/abstracts/20122/a-homogeneous-catalytic-system-for-decolorization-of-a-mixture-of-orange-g-acid-and-naphthol-blue-black-dye-based-on-hydrogen-peroxide-and-a-recyclable-dawson-type-heteropolyanion" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20122.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">360</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">4</span> Study of the Antimicrobial Activity of the Extract of the Eucalyptus camaldulensis stemming from the Algerian Northeast</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Meksem%20Nabila">Meksem Nabila</a>, <a href="https://publications.waset.org/abstracts/search?q=Bordjiba%20Ouahiba"> Bordjiba Ouahiba</a>, <a href="https://publications.waset.org/abstracts/search?q=Meraghni%20Messaouda"> Meraghni Messaouda</a>, <a href="https://publications.waset.org/abstracts/search?q=Meksem%20Amara%20Leila"> Meksem Amara Leila</a>, <a href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohhamed%20Reda"> Djebar Mohhamed Reda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The problems of protection of the cultures are being more and more important that they interest great number of farmers and scientists because of the excessive use of the organic phytosanitary products of synthesis that causes fatal damages on the environment. To reduce the inconveniences produced by these pesticides, the use of "biopesticides" originated from plants could be an alternative. The aim of this work is the valuation of a botanical species: Eucalyptus camaldulensis from Northeastern Algeria which extracts are supposed to have an antimicrobial activity, similar to pesticides. The extraction of secondary metabolites from the leaves of E. camaldulensis was realized using methanol and water, and measurements of total polyphenols were made by spectrometric method. Determination of the antimicrobial activity of the extracts at issue was realized in vitro on phyto-pathogenic fungal and bacterial stumps. Tests of comparison were included in the essays by using the chemical pesticidal products of synthesis. The obtained results show that the plant contains polyphenols with an efficiency mattering of the order of 22 %. These polyphenols have a strong fungicidal and bactericidal pesticidal activity against various microbial stumps and the values of the zones of inhibition are more important compared with that obtained in the presence of the chemicals of synthesis (fungicide). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=eucalyptus%20camaldulensis" title="eucalyptus camaldulensis">eucalyptus camaldulensis</a>, <a href="https://publications.waset.org/abstracts/search?q=biopesticide" title=" biopesticide"> biopesticide</a>, <a href="https://publications.waset.org/abstracts/search?q=polyphenols" title=" polyphenols"> polyphenols</a>, <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20activity" title=" antimicrobial activity"> antimicrobial activity</a> </p> <a href="https://publications.waset.org/abstracts/29478/study-of-the-antimicrobial-activity-of-the-extract-of-the-eucalyptus-camaldulensis-stemming-from-the-algerian-northeast" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29478.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">432</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">3</span> Process for Separating and Recovering Materials from Kerf Slurry Waste </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarik%20Ouslimane">Tarik Ouslimane</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdenour%20Lami"> Abdenour Lami</a>, <a href="https://publications.waset.org/abstracts/search?q=Salaheddine%20Aoudj"> Salaheddine Aoudj</a>, <a href="https://publications.waset.org/abstracts/search?q=Mouna%20Hecini"> Mouna Hecini</a>, <a href="https://publications.waset.org/abstracts/search?q=Ouahiba%20Bouchelaghem"> Ouahiba Bouchelaghem</a>, <a href="https://publications.waset.org/abstracts/search?q=Nadjib%20Drouiche"> Nadjib Drouiche</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Slurry waste is a byproduct generated from the slicing process of multi-crystalline silicon ingots. This waste can be used as a secondary resource to recover high purity silicon which has a great economic value. From the management perspective, the ever increasing generation of kerf slurry waste loss leads to significant challenges for the photovoltaic industry due to the current low use of slurry waste for silicon recovery. Slurry waste, in most cases, contains silicon, silicon carbide, metal fragments and mineral-oil-based or glycol-based slurry vehicle. As a result, of the global scarcity of high purity silicon supply, the high purity silicon content in slurry has increasingly attracted interest for research. This paper presents a critical overview of the current techniques employed for high purity silicon recovery from kerf slurry waste. Hydrometallurgy is continuously a matter of study and research. However, in this review paper, several new techniques about the process of high purity silicon recovery from slurry waste are introduced. The purpose of the information presented is to improve the development of a clean and effective recovery process of high purity silicon from slurry waste. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kerf-loss" title="Kerf-loss">Kerf-loss</a>, <a href="https://publications.waset.org/abstracts/search?q=slurry%20waste" title=" slurry waste"> slurry waste</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=silicon%20recovery" title=" silicon recovery"> silicon recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=photovoltaic" title=" photovoltaic"> photovoltaic</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20purity%20silicon" title=" high purity silicon"> high purity silicon</a>, <a href="https://publications.waset.org/abstracts/search?q=polyethylen%20glycol" title=" polyethylen glycol"> polyethylen glycol</a> </p> <a href="https://publications.waset.org/abstracts/46825/process-for-separating-and-recovering-materials-from-kerf-slurry-waste" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46825.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">311</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">2</span> Multi-Objective Optimization and Effect of Surface Conditions on Fatigue Performance of Burnished Components Made of AISI 52100 Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ouahiba%20Taamallah">Ouahiba Taamallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Litim"> Tarek Litim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study deals with the burnishing effect of AISI 52100 steel and parameters influence (Py, i and f on surface integrity. The results show that the optimal effects are closely related to the treatment parameters. With a 92% improvement in roughness, SB can be defined as a finishing operation within the machining range. Due to 85% gain in consolidation rate, this treatment constitutes an efficient process for work-hardening of material. In addition, a statistical study based on regression and Taguchi's design has made it possible to develop mathematical models to predict output responses according to the studied burnishing parameters. Response Surface Methodology RSM showed a simultaneous influence of the burnishing parameters and to observe the optimal parameters of the treatment. ANOVA Analysis of results led to validate the prediction model with a determination coefficient R2=94.60% and R2=93.41% for surface roughness and micro-hardness, respectively. Furthermore, a multi-objective optimization allowed to identify a regime characterized by P=20 Kgf, i=5 passes and f=0.08 mm.rev-1, which favors minimum surface roughness and a maximum of micro-hardness. The result was validated by a composite desirability D_i=1 for both surface roughness and microhardness, respectively. Applying optimal parameters, burnishing showed its beneficial effects in fatigue resistance, especially for imposed loading in the low cycle fatigue of the material where the lifespan increased by 90%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AISI%2052100%20steel" title="AISI 52100 steel">AISI 52100 steel</a>, <a href="https://publications.waset.org/abstracts/search?q=burnishing" title=" burnishing"> burnishing</a>, <a href="https://publications.waset.org/abstracts/search?q=Taguchi" title=" Taguchi"> Taguchi</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue" title=" fatigue"> fatigue</a> </p> <a href="https://publications.waset.org/abstracts/140752/multi-objective-optimization-and-effect-of-surface-conditions-on-fatigue-performance-of-burnished-components-made-of-aisi-52100-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140752.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">188</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">1</span> Active Part of the Burnishing Tool Effect on the Physico-Geometric Aspect of the Superficial Layer of 100C6 and 16NC6 Steels</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Litim">Tarek Litim</a>, <a href="https://publications.waset.org/abstracts/search?q=Ouahiba%20Taamallah"> Ouahiba Taamallah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Burnishing is a mechanical surface treatment that combines several beneficial effects on the two steel grades studied. The application of burnishing to the ball or to the tip favors a better roughness compared to turning. In addition, it allows the consolidation of the surface layers through work hardening phenomena. The optimal effects are closely related to the treatment parameters and the active part of the device. With an improvement of 78% on the roughness, burnishing can be defined as a finishing operation in the machining range. With a 44% gain in consolidation rate, this treatment is an effective process for material consolidation. These effects are affected by several factors. The factors V, f, P, r, and i have the most significant effects on both roughness and hardness. Ball or tip burnishing leads to the consolidation of the surface layers of both grades 100C6 and 16NC6 steels by work hardening. For each steel grade and its mechanical treatment, the rational tensile curve has been drawn. L眉dwick's law is used to better plot the work hardening curve. For both grades, a material hardening law is established. For 100C6 steel, these results show a work hardening coefficient and a consolidation rate of 0.513 and 44, respectively, compared to the surface layers processed by turning. When 16NC6 steel is processed, the work hardening coefficient is about 0.29. Hardness tests characterize well the burnished depth. The layer affected by work hardening can reach up to 0.4 mm. Simulation of the tests is of great importance to provide the details at the local scale of the material. Conventional tensile curves provide a satisfactory indication of the toughness of 100C6 and 16NC6 materials. A simulation of the tensile curves revealed good agreement between the experimental and simulation results for both steels. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=100C6%20steel" title="100C6 steel">100C6 steel</a>, <a href="https://publications.waset.org/abstracts/search?q=16NC6%20steel" title=" 16NC6 steel"> 16NC6 steel</a>, <a href="https://publications.waset.org/abstracts/search?q=burnishing" title=" burnishing"> burnishing</a>, <a href="https://publications.waset.org/abstracts/search?q=work%20hardening" title=" work hardening"> work hardening</a>, <a href="https://publications.waset.org/abstracts/search?q=roughness" title=" roughness"> roughness</a>, <a href="https://publications.waset.org/abstracts/search?q=hardness" title=" hardness"> hardness</a> </p> <a href="https://publications.waset.org/abstracts/141194/active-part-of-the-burnishing-tool-effect-on-the-physico-geometric-aspect-of-the-superficial-layer-of-100c6-and-16nc6-steels" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141194.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">168</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 16th 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