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Mohammed Reda</title> <meta name="description" content="Search results for: Djebar Mohammed Reda"> <meta name="keywords" content="Djebar Mohammed Reda"> <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="Djebar Mohammed Reda"> <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> 1054</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Djebar Mohammed Reda</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1054</span> Study of Toxic Effect and Anti-Oxidative Activity of a β- Amidophosphonates</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Houria%20Djebar">Houria Djebar</a>, <a href="https://publications.waset.org/abstracts/search?q=Amina%20Saib"> Amina Saib</a>, <a href="https://publications.waset.org/abstracts/search?q=Malika%20Berredjem"> Malika Berredjem</a>, <a href="https://publications.waset.org/abstracts/search?q=Khaoula%20Bechlem"> Khaoula Bechlem</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed-Reda%20Djebar"> Mohammed-Reda Djebar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Reactive oxygen species (ROS) have a high potential to damage almost all types of cellular components of the body, which explains their involvement in the induction and/or amplification of several pathologies. Supplementation of the body by exogenous antioxidants is very useful against these harmful species. In this context, we attempted to evaluate the in vitro and in vivo antioxidant activities of three newly synthesized amidophosphonates (AP1, AP2, and AP3). The results relating to the in vitro tests for DPPH radical scavenging activity shows that these amidophosphonates have a modest antiradical power (ARP) less effectively pronounced compared with an analogue marketed in Algeria: (Dursban) Clorpiryphos ethyl. However, in vivo effects were evaluated on some antioxidant systems (LP intensity, CAT activity and GSH content), or in combination with 2, 2-diphenyl-picrylhydrazyle (DPPH) radical in paramecium tetraurelia used as a complementary system to rapidly elucidate the cytotoxicity. On the basis of the results obtained it can be concluded that amidophosphonates studied exhibited a mild protective effect. The mechanism for how they influenced the antioxidant activities was discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Paramecium%20tetraurelia" title="Paramecium tetraurelia">Paramecium tetraurelia</a>, <a href="https://publications.waset.org/abstracts/search?q=amidophosphonates" title=" amidophosphonates"> amidophosphonates</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=DPPH%20free%20radical" title=" DPPH free radical"> DPPH free radical</a>, <a href="https://publications.waset.org/abstracts/search?q=in%20vitro%20experiments" title=" in vitro experiments"> in vitro experiments</a>, <a href="https://publications.waset.org/abstracts/search?q=biochemical%20parameters" title=" biochemical parameters"> biochemical parameters</a> </p> <a href="https://publications.waset.org/abstracts/106698/study-of-toxic-effect-and-anti-oxidative-activity-of-a-v-amidophosphonates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106698.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">165</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">1053</span> Phytoremediation of Heavy Metals by Phragmites Australis at Oeud Meboudja Annaba Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kleche%20Myriam">Kleche Myriam</a>, <a href="https://publications.waset.org/abstracts/search?q=Ziane%20Nadia"> Ziane Nadia</a>, <a href="https://publications.waset.org/abstracts/search?q=Berrebbah%20Houria"> Berrebbah Houria</a>, <a href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda"> Djebar Mohammed Reda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Phytoremediation has now become a necessity. Thus, in our work, we are interested in the biological wastewater treatment of Oued Meboudja. The physicochemical analysis of water after treatment showed a significant reduction of suspended matter, COD and BOD5 and rate of metals in roots for example iron and zinc. We also highlighted some significant changes in biometric and physiological parameters such as increasing the number of roots and increased respiratory metabolism through the oxygen consumption in isolated roots of Phragmites australis, placed in a polluted environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phragmites%20australis" title="phragmites australis">phragmites australis</a>, <a href="https://publications.waset.org/abstracts/search?q=roots" title=" roots"> roots</a>, <a href="https://publications.waset.org/abstracts/search?q=phytoremediation" title=" phytoremediation"> phytoremediation</a>, <a href="https://publications.waset.org/abstracts/search?q=iron" title=" iron"> iron</a>, <a href="https://publications.waset.org/abstracts/search?q=zinc" title=" zinc"> zinc</a> </p> <a href="https://publications.waset.org/abstracts/17512/phytoremediation-of-heavy-metals-by-phragmites-australis-at-oeud-meboudja-annaba-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17512.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">497</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">1052</span> Toxicity of the Chlorfenapyr: Growth Inhibition and Induction of Oxidative Stress on a Freshwater Protozoan, Paramecium Sp.</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Houne%C3%AFda%20Benbouzid">Houneïda Benbouzid</a>, <a href="https://publications.waset.org/abstracts/search?q=Houria%20Berrebbah"> Houria Berrebbah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed-R%C3%A9da%20Djebar"> Mohammed-Réda Djebar </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The toxicological impacts of the increasing number of synthetic compounds present in the aquatic environment are assessed predominantly in laboratory studies where test organisms are exposed to a range of concentrations of single compounds. The bio-indicator Paramecium sp., characterized by a short life cycle, rapid multiplication and normal behavior that may be affected by the presence of pollutants. We therefore investigated the inhibitory effect of a newly synthesized acaricide: the chlorfenapyr tested at concentrations of 250, 300, and 350 µM on a pure culture of Paramecium sp. during 6 day. Paramecia treated with different concentrations of Chlorfenapyr illustrate strong inhibition of cell growth from the second day of treatment. Low levels of glutathione, increased glutathione S-transferase and the decrease in respiratory metabolism, recorded in the presence of different concentrations of Chlorfenapyr, involve the activation of detoxification system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Paramecium%20sp." title="Paramecium sp.">Paramecium sp.</a>, <a href="https://publications.waset.org/abstracts/search?q=chlorfenapyr" title=" chlorfenapyr"> chlorfenapyr</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidative%20enzymes" title=" oxidative enzymes"> oxidative enzymes</a>, <a href="https://publications.waset.org/abstracts/search?q=detoxification" title=" detoxification"> detoxification</a> </p> <a href="https://publications.waset.org/abstracts/13236/toxicity-of-the-chlorfenapyr-growth-inhibition-and-induction-of-oxidative-stress-on-a-freshwater-protozoan-paramecium-sp" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13236.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">367</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">1051</span> Nanoparticles on Biological Biomarquers Models: Paramecium Tetraurelia and Helix aspersa</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Djebar">H. Djebar</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Khene"> L. Khene</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Boucenna"> M. Boucenna</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Djebar"> M. R. Djebar</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20N.%20Khebbeb"> M. N. Khebbeb</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Djekoun"> M. Djekoun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Currently in toxicology, use of alternative models permits to understand the mechanisms of toxicity at different levels of cells. Objectives of our research concern the determination of NPs ZnO, TiO2, AlO2, and FeO2 effect on ciliate protist freshwater Paramecium sp and Helix aspersa. The result obtained show that NPs increased antioxidative enzyme activity like catalase, glutathione –S-transferase and level GSH. Also, cells treated with high concentrations of NPs showed a high level of MDA. In conclusion, observations from growth and enzymatic parameters suggest on one hand that treatment with NPs provokes an oxidative stress and on the other that snale and paramecium are excellent alternatives models for ecotoxicological studies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=NPs" title="NPs">NPs</a>, <a href="https://publications.waset.org/abstracts/search?q=GST" title=" GST"> GST</a>, <a href="https://publications.waset.org/abstracts/search?q=catalase" title=" catalase"> catalase</a>, <a href="https://publications.waset.org/abstracts/search?q=GSH" title=" GSH"> GSH</a>, <a href="https://publications.waset.org/abstracts/search?q=MDA" title=" MDA"> MDA</a>, <a href="https://publications.waset.org/abstracts/search?q=toxicity" title=" toxicity"> toxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=snale%20and%20paramecium" title=" snale and paramecium"> snale and paramecium</a> </p> <a href="https://publications.waset.org/abstracts/49322/nanoparticles-on-biological-biomarquers-models-paramecium-tetraurelia-and-helix-aspersa" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49322.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">281</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">1050</span> Effect of Dust Rejected by Iron and Steel Complex on Roots of Bean Phaseolus vulgaris</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Labiba%20Zerari%20Bourafa">Labiba Zerari Bourafa</a>, <a href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohamed%20Reda"> Djebar Mohamed Reda</a>, <a href="https://publications.waset.org/abstracts/search?q=Berrebah%20Houria"> Berrebah Houria</a>, <a href="https://publications.waset.org/abstracts/search?q=Khadri%20Sihem"> Khadri Sihem</a>, <a href="https://publications.waset.org/abstracts/search?q=Chiheb%20Linda"> Chiheb Linda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study of the effect of metal dust (pollutants) was performed on higher plant white beans Phaseolus vulgaris; the experience took place in cellular toxicology laboratory (in vitro culture). The seeds of the bean Phaseolus vulgaris are cultured in a metal contaminated dust medium (a single treatment by different increasing doses), at a rate of 10 seeds per box, for 10 days. The measurement of morpho-metric parameters is performed during the first 96 hours that follow the germination; while the dosage of the proline, the protein content and histological sections are formed on the tenth day (240 h). All morpho-metric and biochemical parameters measured were highly disturbed by metal dust; histological sections confirm this disurbance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=conductive%20fabrics" title="conductive fabrics">conductive fabrics</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20dust" title=" metal dust"> metal dust</a>, <a href="https://publications.waset.org/abstracts/search?q=osmoticums" title=" osmoticums"> osmoticums</a>, <a href="https://publications.waset.org/abstracts/search?q=roots" title=" roots"> roots</a>, <a href="https://publications.waset.org/abstracts/search?q=Phaseolus%20vulgaris" title=" Phaseolus vulgaris"> Phaseolus vulgaris</a> </p> <a href="https://publications.waset.org/abstracts/17722/effect-of-dust-rejected-by-iron-and-steel-complex-on-roots-of-bean-phaseolus-vulgaris" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17722.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">376</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1049</span> Paramecuim as a Model for the Evaluation of Toxicity (Growth, Total Proteins, Respiratory and GSH Bio Marker Changes) Observed after Treatment with Essential Oils Isolated from Artemisia herba-alba Plant of Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bouchiha%20Hanene">Bouchiha Hanene</a>, <a href="https://publications.waset.org/abstracts/search?q=Rouabhi%20Rachid"> Rouabhi Rachid</a>, <a href="https://publications.waset.org/abstracts/search?q=Bouchama%20Khaled"> Bouchama Khaled</a>, <a href="https://publications.waset.org/abstracts/search?q=Djebar%20Berrebbah%20Houraya"> Djebar Berrebbah Houraya</a>, <a href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohamed%20Reda"> Djebar Mohamed Reda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recently, some natural products such as essentials oils (EOs) have been used in the fields as alternative to synthetic compounds, to minimize the negative impacts to the environment. This fact has led to questions about the possible impact of EOs on ecosystems. Currently in toxicology, the use of alternative models can help to understand the mechanisms of toxic action, at different levels of organization of ecosystems. Algae, protozoa and bacteria form the base of the food chain and protozoan cells are used as bioindicators often of pollution in environment. Unicellular organisms offer the possibility of direct study of independent cells with specific characteristics of individual cells and whole organisms at the same time. This unicellular facilitates the study of physiological processes, and effects of pollutants at the cellular level, which makes it widely used to assess the toxic effects of various xenobiotics. This study aimed to verify the effects of EOs of one famous plant used tremendously in our folk medicine, namely Artemisia herba alba in causing acute toxicity (24 hours) and chronic (15 days) toxicity for model cellular (Paramecium sp). To this end, cellular’s of paramecium were exposed to various concentrations (Three doses were chosen) of EOs extracted from plant (Artemisia herba alba). In the first experiment, the cellular s cultures were exposed for 48 hours to different concentrations to determine the median lethal concentration (DL50). We followed the evolution of physiological parameters (growth), biochemical (total proteins, respiratory metabolism), as well as the variations of a bio marker the GSH. Our results highlighted a light inhibition of the growth of the protozoa as well as a disturbance of the contents of total proteins and a reduction in the reduced rate of glutathione. The polarographic study revealed a stimulation of the consumption of O2 and this at the treated cells. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=essential%20oils" title="essential oils">essential oils</a>, <a href="https://publications.waset.org/abstracts/search?q=protozoa" title=" protozoa"> protozoa</a>, <a href="https://publications.waset.org/abstracts/search?q=bio%20indicators" title=" bio indicators"> bio indicators</a>, <a href="https://publications.waset.org/abstracts/search?q=toxicity" title=" toxicity"> toxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=Growth" title=" Growth"> Growth</a>, <a href="https://publications.waset.org/abstracts/search?q=bio%20marker" title=" bio marker"> bio marker</a>, <a href="https://publications.waset.org/abstracts/search?q=proteins" title=" proteins"> proteins</a>, <a href="https://publications.waset.org/abstracts/search?q=polarographic" title=" polarographic"> polarographic</a> </p> <a href="https://publications.waset.org/abstracts/40445/paramecuim-as-a-model-for-the-evaluation-of-toxicity-growth-total-proteins-respiratory-and-gsh-bio-marker-changes-observed-after-treatment-with-essential-oils-isolated-from-artemisia-herba-alba-plant-of-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40445.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">346</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">1048</span> The Evaluation of the Effect of a Weed-Killer Sulfonylurea on Durum Wheat (Triticum durum Desf)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <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=Ferfar%20Meriem"> Ferfar Meriem</a>, <a href="https://publications.waset.org/abstracts/search?q=Meksem%20Nabila"> Meksem Nabila</a>, <a href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda"> Djebar Mohammed Reda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The wheat is the cereal the most consumed in the world. In Algeria, the production of this cereal covers only 20 in 25 % of the needs for the country, the rest being imported. To improve the efficiency and the productivity of the durum wheat, the farmers turn to the use of pesticides: weed-killers, fungicides and insecticides. However this use often entrains losses of products more at least important contaminating the environment and all the food chain. Weed-killers are substances developed to control or destroy plants considered unwanted. That they are natural or produced by the human being (molecule of synthesis), the absorption and the metabolization of weed-killers by plants cause the death of these plants.In this work, we set as goal the evaluation of the effect of a weed-killer sulfonylurea, the CossackOD with various concentrations (0, 2, 4 and 9 µg) on variety of Triticum durum: Cirta. We evaluated the plant growth by measuring the leaves and root length, compared with the witness as well as the content of proline and analyze the level of one of the antioxydative enzymes: catalse, after 14 days of treatment. Sulfonylurea is foliar and root weed-killers inhibiting the acetolactate synthase: a vegetable enzyme essential to the development of the plant. This inhibition causes the ruling of the growth then the death. The obtained results show a diminution of the average length of leaves and roots this can be explained by the fact that the ALS inhibitors are more active in the young and increasing regions of the plant, what inhibits the cellular division and talks a limitation of the foliar and root’s growth. We also recorded a highly significant increase in the proline levels and a stimulation of the catalase activity. As a response to increasing the herbicide concentrations a particular increases in antioxidative mechanisms in wheat cultivar Cirta suggest that the high sensitivity of Cirta to this sulfonylurea herbicide is related to the enhanced production and oxidative damage of reactive oxygen species. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sulfonylurea" title="sulfonylurea">sulfonylurea</a>, <a href="https://publications.waset.org/abstracts/search?q=Triticum%20durum" title=" Triticum durum"> Triticum durum</a>, <a href="https://publications.waset.org/abstracts/search?q=oxydative%20stress" title=" oxydative stress"> oxydative stress</a>, <a href="https://publications.waset.org/abstracts/search?q=Toxicity" title=" Toxicity"> Toxicity</a> </p> <a href="https://publications.waset.org/abstracts/29487/the-evaluation-of-the-effect-of-a-weed-killer-sulfonylurea-on-durum-wheat-triticum-durum-desf" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29487.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">1047</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">1046</span> Comparison of Serological and Molecular Diagnosis of Cerebral Toxoplasmosis in Blood and Cerebrospinal Fluid in HIV Infected Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Berredjem%20Hajira">Berredjem Hajira</a>, <a href="https://publications.waset.org/abstracts/search?q=Benlaifa%20Meriem"> Benlaifa Meriem</a>, <a href="https://publications.waset.org/abstracts/search?q=Becheker%20Imene"> Becheker Imene</a>, <a href="https://publications.waset.org/abstracts/search?q=Bardi%20Rafika"> Bardi Rafika</a>, <a href="https://publications.waset.org/abstracts/search?q=Djebar%20Med%20Reda"> Djebar Med Reda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recent acquired or reactivation T.gondii infection is a serious complication in HIV patients. Classical serological diagnosis relies on the detection of anti-Toxoplasma immunoglobulin ; however, serology may be unreliable in HIV immunodeficient patients who fail to produce significant titers of specific antibodies. PCR assays allow a rapid diagnosis of Toxoplasma infection. In this study, we compared the value of the PCR for diagnosing active toxoplasmosis in cerebrospinal fluid and blood samples from HIV patients. Anti-Toxoplasma antibodies IgG and IgM titers were determined by ELISA. In parallel, nested PCR targeting B1 gene and conventional PCR-ELISA targeting P30 gene were used to detect T. gondii DNA in 25 blood samples and 12 cerebrospinal fluid samples from patients in whom toxoplasmic encephalitis was confirmed by clinical investigations. A total of 15 negative controls were used. Serology did not contribute to confirm toxoplasmic infection, as IgG and IgM titers decreased early. Only 8 out 25 blood samples and 5 out 12 cerebrospinal fluid samples PCRs yielded a positive result. 5 patients with confirmed toxoplasmosis had positive PCR results in either blood or cerebrospinal fluid samples. However, conventional nested B1 PCR gave best results than the P30 gene one for the detection of T.gondii DNA in both samples. All samples from control patients were negative. This study demonstrates the unusefulness of the serological tests and the high sensitivity and specificity of PCR in the diagnosis of toxoplasmic encephalitis in HIV patients. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cerebrospinal%20fluid" title="cerebrospinal fluid">cerebrospinal fluid</a>, <a href="https://publications.waset.org/abstracts/search?q=HIV" title=" HIV"> HIV</a>, <a href="https://publications.waset.org/abstracts/search?q=Toxoplasmosis" title=" Toxoplasmosis"> Toxoplasmosis</a>, <a href="https://publications.waset.org/abstracts/search?q=PCR" title=" PCR"> PCR</a> </p> <a href="https://publications.waset.org/abstracts/25273/comparison-of-serological-and-molecular-diagnosis-of-cerebral-toxoplasmosis-in-blood-and-cerebrospinal-fluid-in-hiv-infected-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25273.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">376</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1045</span> Deltamethrin-Induces Oxidative Stress to the Freshwater Ciliate Model: Paramecium tetraurelia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amamra%20Ryma">Amamra Ryma</a>, <a href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohamed%20Reda"> Djebar Mohamed Reda</a>, <a href="https://publications.waset.org/abstracts/search?q=Moumeni%20Ouissem"> Moumeni Ouissem</a>, <a href="https://publications.waset.org/abstracts/search?q=Otmani%20Hadjer"> Otmani Hadjer</a>, <a href="https://publications.waset.org/abstracts/search?q=Berrebbah%20Houria"> Berrebbah Houria</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The problem of environmental contamination by the excessive use of organics cannot be neglected. Extensive application is usually companied with serious problems and health risk. It is established that many chemicals, in common use, can produce some toxic effects on biological systems through their mode of action or by production of free radicals that damage all cell compounds. Deltamethrin, a widely used type II pyrethroid pesticide, is one of the most common contaminants in freshwater aquatic system. In this study, we investigate the effects of deltamethrin exposure on the induction of oxidative stress to the freshwater ciliate Paramecium tetraurelia. After the treatment of paramecium cells with increasing concentrations of insecticide, we followed up the growth kinetics, generation time and the percentage response. Also, we studied the variation in biomarkers of stress such as: GSH content, GST, GPX and CAT activities. Our results showed a significant decrease in the proliferation of cells correlated by the decrease in generation number and the increase in generation time. Also, we noted an inhibition in the percentage response. The monitoring of biomarkers revealed depletion in GSH content in a proportional and dose dependent manner accompanied by an increase in the GST activity. In parallel, a strong induction in the CAT and GPX activities was noted specially for the highest dose. In summary, under the current experimental conditions, deltamethrin is highly toxic to the freshwater ciliate Paramecium tetraurelia. Exposure to low concentrations showed significant adverse on growth accompanied with the induction of oxidative damage supported by the decrease in GSH content and the intensification of the antioxidant enzymes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=deltamethrin" title="deltamethrin">deltamethrin</a>, <a href="https://publications.waset.org/abstracts/search?q=Paramecium%20tetraurelia" title=" Paramecium tetraurelia"> Paramecium tetraurelia</a>, <a href="https://publications.waset.org/abstracts/search?q=growth" title=" growth"> growth</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidative%20stress" title=" oxidative stress"> oxidative stress</a>, <a href="https://publications.waset.org/abstracts/search?q=biomarkers" title=" biomarkers"> biomarkers</a>, <a href="https://publications.waset.org/abstracts/search?q=antioxidant" title=" antioxidant"> antioxidant</a> </p> <a href="https://publications.waset.org/abstracts/17533/deltamethrin-induces-oxidative-stress-to-the-freshwater-ciliate-model-paramecium-tetraurelia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17533.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">467</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">1044</span> In vitro and in vivo Potential Effect of the N-Acylsulfonamide Bis-oxazolidin-2-ones on Toxoplasma gondii</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Benlaifa%20Meriem">Benlaifa Meriem</a>, <a href="https://publications.waset.org/abstracts/search?q=Berredjem%20Hajira"> Berredjem Hajira</a>, <a href="https://publications.waset.org/abstracts/search?q=Bouasla%20Radia"> Bouasla Radia</a>, <a href="https://publications.waset.org/abstracts/search?q=Berredjem%20Malika"> Berredjem Malika</a>, <a href="https://publications.waset.org/abstracts/search?q=Djebar%20Med%20Reda"> Djebar Med Reda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Toxoplasmosis is a cosmopolitan infection due to Toxoplasma gondii (T.gondii). It is a significant cause of congenital disease and an important opportunistic pathogen which has become a worldwide increasing problem due to the AIDS epidemic. Current available drugs do not give satisfactory results and often have only a static and several adverse side effects as it is the case of pyrimethamine. So, the need to develop and evaluate new drugs is critical. The purpose of this study is to investigate the in vitro and in vivo effects of the new chiral N-acylsulfonamide bis-oxazolidin-2-ones on T.gondii. In this study, anti-T.gondii RH strain activities, of two new chiral N-acylsulfonamide bis-oxazolidin-2-ones were evaluated in vitro, using a MRC-5 fibroblast tissue cultures to determine the concentration that inhibit parasite multiplication by 50% (IC50) of each drug and in vivo, by PCR detection of the tachyzoites in mice ascites after new molecules treatment, using the 35-fold repetitive B1 gene of T.gondii. The in vitro results demonstrated that the treatment with the tested molecules decreased the amount of tachyzoites in cell culture in a dose-dependent manner. The inhibition was complete for concentrations over 4 mg/ml. The IC50 of Mol 1 and Mol 2 were 1.5 and 3 mg/ml, respectively, and were quite similar to the control one (2 mg/ml). The Mol 1 was highly active against T.gondii in cell cultures than Mol 2; these results were similar to those of sulfadiazine-treated group (p < 0.05). Toxoplasma-specific DNA was demonstrated in all ascites samples from infected mice of the different tested groups. Mol 1 showed better effect than Mol 2, but it did not completely inhibit the parasite proliferation. The intensity of amplification products increased when the treatment started late after infection. These findings suggest continuous parasite replication despite the treatment. In conclusion, our results showed a promising treatment effect of the tested molecules and suggest that in vitro, the Mol 1, and Mol 2 have a dose-dependent effect and a high cytotoxicity on the studied cells. The present study revealed that concentration and duration of tested molecules treatment are major factors that influence the course of Toxoplasma infection in infected mice. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cytotoxicity" title="cytotoxicity">cytotoxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=PCR" title=" PCR"> PCR</a>, <a href="https://publications.waset.org/abstracts/search?q=sulfonamide" title=" sulfonamide"> sulfonamide</a>, <a href="https://publications.waset.org/abstracts/search?q=Toxoplasma%20gondii" title=" Toxoplasma gondii"> Toxoplasma gondii</a> </p> <a href="https://publications.waset.org/abstracts/24904/in-vitro-and-in-vivo-potential-effect-of-the-n-acylsulfonamide-bis-oxazolidin-2-ones-on-toxoplasma-gondii" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24904.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">504</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">1043</span> Perception of Aerospace Engineering Students in Saudi Arabia on Aviation Sustainability</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Badr%20A.%20Al-Harbi">Badr A. Al-Harbi</a>, <a href="https://publications.waset.org/abstracts/search?q=Fahd%20T.%20Abdullah"> Fahd T. Abdullah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mazen%20T.%20Wali"> Mazen T. Wali</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20W.%20Al-Obaidi"> Mohammed W. Al-Obaidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Reda%20M.%20Bakhdlg"> Reda M. Bakhdlg</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Over the past few years, the aviation society had demonstrated a huge concern for securing the sustainability of commercial aviation. Future aerospace engineers in Saudi Arabia are expected to play a major role in dealing with these aspects, taking into consideration the expected growth in both traffic, passenger mileage, and fleet expansions in the region. In the present work, the authors investigate the perception of engineering students in the two undergraduate aerospace engineering programs in the Kingdom. A questionnaire was distributed using google forms and targeted approximately 300 students in both programs on several WhatsApp groups. Data collection was stopped after one week when a response rate above 35% was reached. The questionnaire aimed at assessing the students’ awareness of sustainable aviation and associated obstacles. The results obtained from the study indicate the necessity of introducing curricular modifications to address the subject with more targeted extracurricular activities and better use of social media, which is becoming a main source of students’ awareness. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aviation" title="aviation">aviation</a>, <a href="https://publications.waset.org/abstracts/search?q=engineering%20education" title=" engineering education"> engineering education</a>, <a href="https://publications.waset.org/abstracts/search?q=students%E2%80%99%20perception" title=" students’ perception"> students’ perception</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20aviation" title=" sustainable aviation"> sustainable aviation</a> </p> <a href="https://publications.waset.org/abstracts/135680/perception-of-aerospace-engineering-students-in-saudi-arabia-on-aviation-sustainability" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135680.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">157</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">1042</span> Powers of Class p-w A (s, t) Operators Associated with Generalized Aluthge Transformations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Husein%20Mohammed%20Rashid">Mohammed Husein Mohammed Rashid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Let Τ = U |Τ| be a polar decomposition of a bounded linear operator T on a complex Hilbert space with ker U = ker |T|. T is said to be class p-w A(s,t) if (|T*|ᵗ|T|²ˢ|T*|ᵗ )ᵗᵖ/ˢ⁺ᵗ ≥|T*|²ᵗᵖ and |T|²ˢᵖ ≥ (|T|ˢ|T*|²ᵗ|T|ˢ)ˢᵖ/ˢ⁺ᵗ with 0<p≤1 and 0<s,t,s + t≤1. This is a generalization of p-hyponormal or class A operators. In this paper, we shall show that if T belongs to class p-w A (s, t) operator for 0<s,t≤1 and 0<p≤1, then Tⁿ belongs to class p₁-w A (s/n, t/n) for 0<p₁≤p and for all positive integer n. As an immediate corollary of this result, we shall also show that if T is a p-w-hyponormal operator, then Tⁿ is also p₁-w-hyponormal for 0<p₁≤p and for all positive integer n. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=class%20p-w%20A%20%28s" title="class p-w A (s">class p-w A (s</a>, <a href="https://publications.waset.org/abstracts/search?q=t%29" title=" t)"> t)</a>, <a href="https://publications.waset.org/abstracts/search?q=normaloid" title=" normaloid"> normaloid</a>, <a href="https://publications.waset.org/abstracts/search?q=isoloid" title=" isoloid"> isoloid</a>, <a href="https://publications.waset.org/abstracts/search?q=finite" title=" finite"> finite</a>, <a href="https://publications.waset.org/abstracts/search?q=orthogonality" title=" orthogonality"> orthogonality</a> </p> <a href="https://publications.waset.org/abstracts/158688/powers-of-class-p-w-a-s-t-operators-associated-with-generalized-aluthge-transformations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158688.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">117</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">1041</span> Efficacy of Cool's and Rhythmic Stabilization Exercises on Scapular up Ward Rotation and Ut/Sa Ratio in Patients with Shoulder Impingement Syndrome</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Moustafa">Mohammed Moustafa</a>, <a href="https://publications.waset.org/abstracts/search?q=Khaled%20Ayad"> Khaled Ayad</a>, <a href="https://publications.waset.org/abstracts/search?q=Waleed%20Reda"> Waleed Reda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Shoulder impingement syndrome is the most common disorder of the shoulder, resulting in functional loss and disability. Objective: This study was designed to compare between the effects of scapular muscle training versus rhythmic stabilization exercises in treatment of shoulder impingement syndrome. Methods: Thirty patients participated in this study; they were assigned randomly into two experimental groups. The first experimental group (A) consisted of 15 patients with a mean age (21.87±2.72) years; they received graduated rhythmic stabilization exercises and stretching of the posterior capsule. The second experimental group (B) consisted of 15 patients with a mean age (22.27±2.94) years; they received scapular muscle training exercises in addition to stretching of the posterior capsule. Treatment was given three times per week, every other day, for four consecutive weeks. Patients have been evaluated pretreatment and post treatment for shoulder pain severity and functional disability. Results: Both groups showed highly statistical significant reduction in pain severity and functional disability measured post-treatment when compared with their corresponding values in pretreatment assessment. Conclusion: Both of rhythmic stabilization exercises and scapular muscle training are effective interventions to reduce shoulder pain severity and functional disability. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=impingement%20syndrome" title="impingement syndrome">impingement syndrome</a>, <a href="https://publications.waset.org/abstracts/search?q=scapular%20exercises" title=" scapular exercises"> scapular exercises</a>, <a href="https://publications.waset.org/abstracts/search?q=rhythmic%20stabilization%20exercises" title=" rhythmic stabilization exercises"> rhythmic stabilization exercises</a>, <a href="https://publications.waset.org/abstracts/search?q=posterior%20capsule%20stretch" title=" posterior capsule stretch"> posterior capsule stretch</a> </p> <a href="https://publications.waset.org/abstracts/49290/efficacy-of-cools-and-rhythmic-stabilization-exercises-on-scapular-up-ward-rotation-and-utsa-ratio-in-patients-with-shoulder-impingement-syndrome" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49290.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">240</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">1040</span> On the Effect of Carbon on the Efficiency of Titanium as a Hydrogen Storage Material</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ghazi%20R.%20Reda%20%20Mahmoud%20Reda">Ghazi R. Reda Mahmoud Reda </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Among the metal that forms hydride´s, Mg and Ti are known as the most lightweight materials; however, they are covered with a passive layer of oxides and hydroxides and require activation treatment under high temperature ( > 300 C ) and hydrogen pressure ( > 3 MPa) before being used for storage and transport applications. It is well known that small graphite addition to Ti or Mg, lead to a dramatic change in the kinetics of mechanically induced hydrogen sorption ( uptake) and significantly stimulate the Ti-Hydrogen interaction. Many explanations were given by different authors to explain the effect of graphite addition on the performance of Ti as material for hydrogen storage. Not only graphite but also the addition of a polycyclic aromatic compound will also improve the hydrogen absorption kinetics. It will be shown that the function of carbon addition is two-fold. First carbon acts as a vacuum cleaner, which scavenges out all the interstitial oxygen that can poison or slow down hydrogen absorption. It is also important to note that oxygen favors the chemisorption of hydrogen, which is not desirable for hydrogen storage. Second, during scavenging of the interstitial oxygen, the carbon reacts with oxygen in the nano and microchannel through a highly exothermic reaction to produce carbon dioxide and monoxide which provide the necessary heat for activation and thus in the presence of carbon lower heat of activation for hydrogen absorption which is observed experimentally. Furthermore, the product of the reaction of hydrogen with the carbon oxide will produce water which due to ball milling hydrolyze to produce the linear H5O2 + this will reconstruct the primary structure of the nanocarbon to form secondary structure, where the primary structure (a sheet of carbon) are connected through hydrogen bonding. It is the space between these sheets where physisorption or defect mediated sorption occurs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=metal%20forming%20hydrides" title="metal forming hydrides">metal forming hydrides</a>, <a href="https://publications.waset.org/abstracts/search?q=polar%20molecule%20impurities" title=" polar molecule impurities"> polar molecule impurities</a>, <a href="https://publications.waset.org/abstracts/search?q=titanium" title=" titanium"> titanium</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20diagram" title=" phase diagram"> phase diagram</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20absorption" title=" hydrogen absorption"> hydrogen absorption</a> </p> <a href="https://publications.waset.org/abstracts/33527/on-the-effect-of-carbon-on-the-efficiency-of-titanium-as-a-hydrogen-storage-material" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33527.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">362</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">1039</span> Analysis of Technical Efficiency and Its Determinants among Cattle Fattening Enterprises in Kebbi State, Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gona%20Ayuba">Gona Ayuba</a>, <a href="https://publications.waset.org/abstracts/search?q=Isiaka%20Mohammed"> Isiaka Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Kotom%20Mohammed%20Baba"> Kotom Mohammed Baba</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Aabubakar%20Maikasuwa"> Mohammed Aabubakar Maikasuwa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study examined the technical efficiency and its determinants of cattle fattening enterprises in Kebbi state, Nigeria. Data were collected from a sample of 160 fatteners between June 2010 and June 2011 using the multistage random sampling technique. Translog stochastic frontier production function was employed for the analysis. Results of the analysis show that technical efficiency indices varied from 0.74 to 0.98%, with a mean of 0.90%, indicating that there was no wide gap between the efficiency of best technical efficient fatteners and that of the average fattener. The result also showed that fattening experience and herd size influenced the level of technical efficiency at 1% levels. It is recommended that credit agencies should ensure that credit made available to the fatteners is monitored to ensure appropriate utilization. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=technical%20efficiency" title="technical efficiency">technical efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=determinants" title=" determinants"> determinants</a>, <a href="https://publications.waset.org/abstracts/search?q=cattle" title=" cattle"> cattle</a>, <a href="https://publications.waset.org/abstracts/search?q=fattening%20enterprises" title=" fattening enterprises"> fattening enterprises</a> </p> <a href="https://publications.waset.org/abstracts/48489/analysis-of-technical-efficiency-and-its-determinants-among-cattle-fattening-enterprises-in-kebbi-state-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48489.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">451</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">1038</span> Assessment of Solid Waste Management in General Mohammed Inuwa Wushishi Housing Estate, Minna, Niger State, Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Garba%20Inuwa%20Kuta">Garba Inuwa Kuta</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed"> Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Adamu"> Adamu</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Ahmed%20Emigilati"> Mohammed Ahmed Emigilati</a>, <a href="https://publications.waset.org/abstracts/search?q=Ibrahim%20Ishiaku"> Ibrahim Ishiaku</a>, <a href="https://publications.waset.org/abstracts/search?q=Kudu%20Dangana"> Kudu Dangana</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study sought to identify the problems of solid waste management in General Mohammed InuwaWushishi Housing Estate. The two broad types of data, the secondary and primary data were used in the study. Questionnaires and personal observations were also used to collect some of the data. Factors impeding the effective and efficient solid waste management were identified. The study revealed that sacks disposal method and open dumping are the most commonly used method of disposal, about 30.0% of the respondent use sacks disposal method in the estate while 24.9% dump their refuse on the floor. Wrong attitudes and perceptions of the people about sanitation issues contributed to solid waste management problems of General Mohammed InuwaWushishi Housing Estate. Majority of the households did not educate their members on the need to clean their surroundings and refuse to buy drum for waste disposal from Niger State Environmental Protection Agency (NISEPA) on the basis that the drums are expensive. Virtually, all the people depended on Niger State Environmental Protection Agency (NISEPA) facilities for the disposal of their household refuse. Solid waste management problems were partly the results of NISEPA’s inability to cope with the situation because of lack of equipment. It was recommended that there should be an increase in enlightenment to the people on domestic waste disposal to keep the surroundings clean. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=housing%20estate" title="housing estate">housing estate</a>, <a href="https://publications.waset.org/abstracts/search?q=assessment" title=" assessment"> assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=solid%20waste" title=" solid waste"> solid waste</a>, <a href="https://publications.waset.org/abstracts/search?q=disposal" title=" disposal"> disposal</a>, <a href="https://publications.waset.org/abstracts/search?q=management" title=" management"> management</a> </p> <a href="https://publications.waset.org/abstracts/29043/assessment-of-solid-waste-management-in-general-mohammed-inuwa-wushishi-housing-estate-minna-niger-state-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29043.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">650</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">1037</span> Women Entrepreneurs’ in Nigeria: Issues and Challenges</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Mainoma">Mohammed Mainoma</a>, <a href="https://publications.waset.org/abstracts/search?q=Abubakar%20Tijanni"> Abubakar Tijanni</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Aliyu"> Mohammed Aliyu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Globalization has brought a structural change in industry. It is the breaking of artificial boundaries and given way to new product, new service, new market, and new technology among others. It leads to the realization that men entrepreneurs’ alone cannot meet the demand of the teeming population. Therefore there is a need for the participation, involvement, and engagement of females in the production and distribution of goods and services. This will enhance growth and development of a nation. It is in line with the above that this paper attempt to discuss meaning of women entrepreneurs, roles, types, problems, and prospects. Also, on the basis of conclusion the paper recommended that entrepreneurship education should be introduced in all Tertiary Institutions in Nigeria. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=women" title="women">women</a>, <a href="https://publications.waset.org/abstracts/search?q=entrepreneurs" title=" entrepreneurs"> entrepreneurs</a>, <a href="https://publications.waset.org/abstracts/search?q=issues" title=" issues"> issues</a>, <a href="https://publications.waset.org/abstracts/search?q=challenges" title=" challenges"> challenges</a> </p> <a href="https://publications.waset.org/abstracts/12200/women-entrepreneurs-in-nigeria-issues-and-challenges" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12200.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">518</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1036</span> Analysing Social Media Coverage of Political Speeches in Relation to Discourse and Context</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yaser%20Mohammed%20Altameemi">Yaser Mohammed Altameemi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research looks at the representation of the social media for the Saudi Government decrees regarding the developmental projects of the Saudi 2030 vision. The paper analyses a television interview with the Crown Prince Mohammed Bin Salman who talks about the progress of the Saudi vision of 2030, and how the government had acted as response to the COVID-19 pandemic. The interview was on 28/4/2021. The paper analyses the tweets on Twitter that cover the interview for the purpose of investigating the development of concepts and meanings regarding the Saudi peoples’ orientations towards the Saudi projects. The data include all related tweets from the day of the interview and the following seven days after the interview. The finding of the collocation analysis suggests that nationalism notion is explicitly expressed by users in Twitter. The main finding of this paper suggests the importance of further analyses for the concordance lines. However, the collocation network suggests that there is a clear highlight for nationalism. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=social%20media" title="social media">social media</a>, <a href="https://publications.waset.org/abstracts/search?q=twitter" title=" twitter"> twitter</a>, <a href="https://publications.waset.org/abstracts/search?q=political%20interview" title=" political interview"> political interview</a>, <a href="https://publications.waset.org/abstracts/search?q=prince%20Mohammed%20Bin%20Salman" title=" prince Mohammed Bin Salman"> prince Mohammed Bin Salman</a>, <a href="https://publications.waset.org/abstracts/search?q=Saudi%20vision%202030" title=" Saudi vision 2030"> Saudi vision 2030</a> </p> <a href="https://publications.waset.org/abstracts/146201/analysing-social-media-coverage-of-political-speeches-in-relation-to-discourse-and-context" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146201.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">1035</span> Influence of Physico-Chemical Changes in the Environment on the Behavior of Tadpoles Rana Saharica: Case of Fungicide (Artea 330ec)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Zouainia">S. Zouainia</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Djebar"> R. Djebar</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Berrebah"> H. Berrebah</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Sayeb"> A. Sayeb</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work focused on the study of physiological and biochemical changes observed in tadpoles exposed to fungicide Rana saharica Artea 330ec recently introduced in Algeria. For this, we tested the effect of xenobiotics on growth and development of tadpoles; among the studied parameters: total protein, glutathione and respiratory activity. The study of physiological parameters showed that the tadpoles change perfectly in the absence of toxic and in favorable conditions (pH, temperature). Our results showed an increased rate of protein and GSH in the presence of the fungicide Artea 330ec. The latter causes uninhibited very highly significant respiratory activity of tadpoles treated. The presence of xenobiotics in the breeding tadpoles water causes disturbances in behavior and food metabolism. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amphibians" title="amphibians">amphibians</a>, <a href="https://publications.waset.org/abstracts/search?q=fungicides" title=" fungicides"> fungicides</a>, <a href="https://publications.waset.org/abstracts/search?q=pesticides" title=" pesticides"> pesticides</a>, <a href="https://publications.waset.org/abstracts/search?q=pollution" title=" pollution"> pollution</a> </p> <a href="https://publications.waset.org/abstracts/19163/influence-of-physico-chemical-changes-in-the-environment-on-the-behavior-of-tadpoles-rana-saharica-case-of-fungicide-artea-330ec" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19163.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">408</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">1034</span> Evaluation of Toxicity of Some Fungicides Against the Pathogen Fusarium sp.</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Djekoun">M. Djekoun</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Berrebah"> H. Berrebah</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Djebar"> M. R. Djebar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fusarium wilt attacks the plants of major economic interest including wheat. This disease causes many problems for farmers and economic loss resulting are often very heavy. Chemical control is currently one of the most effective ways to fight against these diseases. In this study, the efficacy of three fungicides (tebuconazole, thiram and fludioxonil - difenoconazole mixture) was tested, in vitro, on the phytopathogenic Fusarium sp. isolated from seeds of wheat. The active ingredients were tested at different concentrations: 0.06, 1.39, 2.79, 5.58, and 11.16 mg/l for tebuconazole, 0.035, 0.052, 0.105, 0.21, and 0.42 mg/l for thiram and finally, for the mixture fludioxonil- difenoconazole 4 concentrations were tested : 0.05, 0.1, 0.5, and 1 mg/l. Toxicity responses were expressed as the effective concentration, which inhibits mycelial growth by 50%, (EC50). Of the three selected fungicides, thirame proved to be the most effective with EC50 value of the order of 0,15 mg/l followed by the mixture of fludioxonil- difenoconazole with 0,27 mg/l and finally tebuconazole with a value of 3.79 mg/l. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fusarium%20sp" title="Fusarium sp">Fusarium sp</a>, <a href="https://publications.waset.org/abstracts/search?q=thiram" title=" thiram"> thiram</a>, <a href="https://publications.waset.org/abstracts/search?q=tebuconazole" title=" tebuconazole"> tebuconazole</a>, <a href="https://publications.waset.org/abstracts/search?q=fludioxonil" title=" fludioxonil"> fludioxonil</a>, <a href="https://publications.waset.org/abstracts/search?q=difenoconazole" title=" difenoconazole"> difenoconazole</a>, <a href="https://publications.waset.org/abstracts/search?q=EC50" title=" EC50"> EC50</a> </p> <a href="https://publications.waset.org/abstracts/21160/evaluation-of-toxicity-of-some-fungicides-against-the-pathogen-fusarium-sp" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21160.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">544</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">1033</span> Effects of Some Fungicides on Mycelial Growth of Fusarium spp.</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Djekoun">M. Djekoun</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Berrebah"> H. Berrebah</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Djebar"> M. R. Djebar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fusarium wilt is destructive disease of cereal crops with small grains. It affects yields but also the quality of the crop and economic losses arising are often very heavy. Chemical control is currently one of the most effective ways to fight against these diseases. In this study, the efficacy of three fungicides (tebuconazole, thiram, and fludioxonil-difenoconazole mixture) was tested. In vitro, on the phytopathogenic Fusarium spp. isolated from seeds of wheat. The active ingredients were tested at different concentrations: 0.06, 1.39, 2.79, 5.58, and 11.16 mg/l for tebuconazole, 0.035, 0.052, 0.105, 0.21, and 0.42 mg/l for thiram and finally, for the mixture fludioxonil-difenoconazole 4 concentrations were tested: 0.05, 0.1, 0.5 and 1 mg/l. Toxicity responses were expressed as effective concentration, which inhibits mycelial growth by 50%, (EC50). Of the three selected fungicides, thirame proved to be the most effective with EC50 value of the order of 0,15 mg/l followed by the mixture of fludioxonil-difenoconazole with 0,27mg/l and finally tebuconazole with a value of 3.79 mg/l. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fusarium%20spp." title="Fusarium spp.">Fusarium spp.</a>, <a href="https://publications.waset.org/abstracts/search?q=thiram" title=" thiram"> thiram</a>, <a href="https://publications.waset.org/abstracts/search?q=tebuconazole" title=" tebuconazole"> tebuconazole</a>, <a href="https://publications.waset.org/abstracts/search?q=fludioxonil" title=" fludioxonil"> fludioxonil</a>, <a href="https://publications.waset.org/abstracts/search?q=difenoconazole" title=" difenoconazole"> difenoconazole</a>, <a href="https://publications.waset.org/abstracts/search?q=percentage%20of%20inhibition" title=" percentage of inhibition"> percentage of inhibition</a>, <a href="https://publications.waset.org/abstracts/search?q=EC50" title=" EC50"> EC50</a> </p> <a href="https://publications.waset.org/abstracts/18858/effects-of-some-fungicides-on-mycelial-growth-of-fusarium-spp" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18858.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">366</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">1032</span> Serological Screening of Cytomegalovirus Infection among Sudanese Patients with Leukemia, Breast and Prostate Cancers at Radiation-Isotope Center in Khartoum</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abuelquasim.%20M.%20Hassan">Abuelquasim. M. Hassan</a>, <a href="https://publications.waset.org/abstracts/search?q=Namarig%20.S.%20Mohammed"> Namarig .S. Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Samah%20F.%20Mohammed"> Samah F. Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Wafaa.%20A.%20Mohammed"> Wafaa. A. Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Wafaa%20M.%20Edriss"> Wafaa M. Edriss</a>, <a href="https://publications.waset.org/abstracts/search?q=Amel%20A.%20Ahmed"> Amel A. Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Elfadil%20M.%20Abass"> Elfadil M. Abass</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Cytomegalovirus (CMV), a common virus, usually causes asymptomatic infections in immunocompetent hosts; however, it may lead to serious complications especially in cancer patients. Objectives: This study was conducted to determine the seroprevalence of human cytomegalovirus (HCMV) among leukemia, breast and prostate cancer patients attending at Radiation Isotope-Center-Khartoum (RICK) from April to August 2016. Material and Methods: A total of 91 subjects were included: 30 leukemic, 22 breast cancer and 29 prostate cancer patients.10 of them were healthy and used as control group, serum samples were collected and tested for CMV IgG & IgM using enzyme-linked immune sorbent assay (ELISA). Result: Of the control group, 9/10 (9.9%) were seropositive for CMV IgG and 1/10 (1.09%) were sero positive for IgM. Also, all cancer groups demonstrated presence of IgG antibody classes as: The percentage of positive results in prostate, breast cancer and leukemia were 35.8 %, 37.2%, and 35.3% respectively. Conclusion: There was no significant correlation between leukemia, breast, prostate and HCMV. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cytomegalovirus" title="cytomegalovirus">cytomegalovirus</a>, <a href="https://publications.waset.org/abstracts/search?q=serodiagnostic" title=" serodiagnostic"> serodiagnostic</a>, <a href="https://publications.waset.org/abstracts/search?q=breast%20cancer" title=" breast cancer"> breast cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=leukemia" title=" leukemia"> leukemia</a> </p> <a href="https://publications.waset.org/abstracts/57018/serological-screening-of-cytomegalovirus-infection-among-sudanese-patients-with-leukemia-breast-and-prostate-cancers-at-radiation-isotope-center-in-khartoum" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57018.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">384</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">1031</span> Hydrodynamic Study and Sizing of a Distillation Column by HYSYS Software</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Derrouazin%20Mohammed%20Redhouane">Derrouazin Mohammed Redhouane</a>, <a href="https://publications.waset.org/abstracts/search?q=Souakri%20Mohammed%20Lotfi"> Souakri Mohammed Lotfi</a>, <a href="https://publications.waset.org/abstracts/search?q=Henini%20Ghania"> Henini Ghania</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work consists, first of all, of mastering one of the powerful process simulation tools currently used in the industrial processes, which is the HYSYS sizing software, and second, of simulating a petroleum distillation column. This study is divided into two parts; where the first one consists of a dimensioning of the column with a fast approximating method using state equations, iterative calculations, and then a precise simulation method with the HYSYS software. The second part of this study is a hydrodynamic study in order to verify by obtained results the proper functioning of the plates. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=industry%20process%20engineering" title="industry process engineering">industry process engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20distillation" title=" water distillation"> water distillation</a>, <a href="https://publications.waset.org/abstracts/search?q=environment" title=" environment"> environment</a>, <a href="https://publications.waset.org/abstracts/search?q=HYSYS%20simulation%20tool" title=" HYSYS simulation tool"> HYSYS simulation tool</a> </p> <a href="https://publications.waset.org/abstracts/154967/hydrodynamic-study-and-sizing-of-a-distillation-column-by-hysys-software" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154967.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">129</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">1030</span> Microencapsulated Boswellia serrata and Probiotic Bacteria Acted as Symbiotic in Metabolic Syndrome Rat Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Moetazza%20M.%20Alshafei">Moetazza M. Alshafei</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20M.%20Mabrouk"> Ahmed M. Mabrouk</a>, <a href="https://publications.waset.org/abstracts/search?q=Emtenan%20M.%20Hanafi"> Emtenan M. Hanafi</a>, <a href="https://publications.waset.org/abstracts/search?q=Manal%20M.%20Ramadan"> Manal M. Ramadan</a>, <a href="https://publications.waset.org/abstracts/search?q=Reda%20M.%20S.%20Korany"> Reda M. S. Korany</a>, <a href="https://publications.waset.org/abstracts/search?q=Seham%20S.%20Kassem"> Seham S. Kassem</a>, <a href="https://publications.waset.org/abstracts/search?q=Dina%20Mostafa%20Mohammed"> Dina Mostafa Mohammed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Metabolic syndrome (MeS) is a major health problem with a high incidence of obese individuals worldwide. Increased related morbidity of diabetes, hypertension and fatty liver disease, and complicated cardiovascular disease are inevitable. Boswellia serrata gum (Bos) is a promising traditional medicinal plant; it has several pharmacological properties, including anti-inflammatory, antioxidant, and antilipase activities. Probiotics (Bac) supplements have good benefits on health and MeS, whether it is supplemented in combination with prebiotics or alone. Microencapsulation helps to mask unpalatable taste and odor and deliver active ingredients to targeted organs. Methodology MeS rat model was produced by feeding rats with a high fat, high CHO diet (HFD). Bos was extracted, and both Bos and the probiotic were microencapsulated with a spray drier. Female rats were divided into 5 groups (N8). HFD control, control normal receiving basic diet, HFD treated, from the start of the experiment, either with encapsulated Bos, Bac and Bos or Bac only, all treatments were received for eight weeks (after approval from NRC animal ethical committee). Serum was collected to analyze lipid profile, blood sugar, liver and kidney functions, antioxidants, leptin, and progesterone. Rat's organs and body fat were weighed and collected for histopathology. Statistical analysis was done by use of one way Anova test in the SPSS program. Results showed control of elevated body weight, lipid profile, and glucose levels as well as decrease of body fat index and improvement of histopathology of liver and heart, especially in combination. Conclusion: We concluded that both microencapsulated Bos and probiotics have a controlling effect on MeS parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=metabolic%20syndrome" title="metabolic syndrome">metabolic syndrome</a>, <a href="https://publications.waset.org/abstracts/search?q=Boswellia%20serata" title=" Boswellia serata"> Boswellia serata</a>, <a href="https://publications.waset.org/abstracts/search?q=probiotic" title=" probiotic"> probiotic</a>, <a href="https://publications.waset.org/abstracts/search?q=micro-encapsulation" title=" micro-encapsulation"> micro-encapsulation</a>, <a href="https://publications.waset.org/abstracts/search?q=histopathology" title=" histopathology"> histopathology</a>, <a href="https://publications.waset.org/abstracts/search?q=liver%20steatosis" title=" liver steatosis"> liver steatosis</a> </p> <a href="https://publications.waset.org/abstracts/161022/microencapsulated-boswellia-serrata-and-probiotic-bacteria-acted-as-symbiotic-in-metabolic-syndrome-rat-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161022.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">102</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">1029</span> Solid Biofuel Production by Hydrothermal Carbonization of Wood Shavings: Effect of Carbonization Temperature and Biomass-to-Water Ratio on Hydrochar’s Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Aliyu">Mohammed Aliyu</a>, <a href="https://publications.waset.org/abstracts/search?q=Kazunori%20Iwabuchi"> Kazunori Iwabuchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ibrahim%20Shaba%20Mohammed"> Ibrahim Shaba Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Abubakar%20Sadeeq%20Mohammed"> Abubakar Sadeeq Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Solomon%20Musa%20Dauda"> Solomon Musa Dauda</a>, <a href="https://publications.waset.org/abstracts/search?q=Zinash%20Delebo%20Osunde"> Zinash Delebo Osunde</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hydrothermal carbonization (HTC) is recognised as a low temperature and effective technique for the conversion of biomass to solid biofuel. In this study, the effect of process temperature and biomass-to-water ratio (B/W) on the fuel properties of hydrochar produced from wood shavings was investigated. HTC was conducted in an autoclave using reaction temperature of 230 °C and 260 °C for 20 minutes with B/W ratio of 0.11 to 0.43. The produced hydrochars were characterised by the mass yield (MY), higher heating value (HHV), proximate and ultimate properties. The results showed that the properties of the hydrochars improved with increasing process temperature and B/W ratio. The higher heating value (HHV) increased to 26.74 MJ/kg as the severity of the reaction was increased to the process temperature of 260 °C. Also, the atomic H/C and O/C ratios of hydrochars produced at 230 °C and 260 °C were closed to the regions of a peat and lignite on the plotted van Krevelen diagram. Hence, the produced hydrochar has a promising potential as a sustainable solid biofuel for energy application. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wood%20shavings" title="wood shavings">wood shavings</a>, <a href="https://publications.waset.org/abstracts/search?q=biomass%2Fwater%20ratio" title=" biomass/water ratio"> biomass/water ratio</a>, <a href="https://publications.waset.org/abstracts/search?q=thermochemical%20conversion" title=" thermochemical conversion"> thermochemical conversion</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrothermal%20carbonization" title=" hydrothermal carbonization"> hydrothermal carbonization</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrochar" title=" hydrochar"> hydrochar</a> </p> <a href="https://publications.waset.org/abstracts/172680/solid-biofuel-production-by-hydrothermal-carbonization-of-wood-shavings-effect-of-carbonization-temperature-and-biomass-to-water-ratio-on-hydrochars-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/172680.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">116</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">1028</span> Orientational Pair Correlation Functions Modelling of the LiCl6H2O by the Hybrid Reverse Monte Carlo: Using an Environment Dependence Interaction Potential</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Habchi">Mohammed Habchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sidi%20Mohammed%20Mesli"> Sidi Mohammed Mesli</a>, <a href="https://publications.waset.org/abstracts/search?q=Rafik%20Benallal"> Rafik Benallal</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Kotbi"> Mohammed Kotbi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> On the basis of four partial correlation functions and some geometric constraints obtained from neutron scattering experiments, a Reverse Monte Carlo (RMC) simulation has been performed in the study of the aqueous electrolyte LiCl6H2O at the glassy state. The obtained 3-dimensional model allows computing pair radial and orientational distribution functions in order to explore the structural features of the system. Unrealistic features appeared in some coordination peaks. To remedy to this, we use the Hybrid Reverse Monte Carlo (HRMC), incorporating an additional energy constraint in addition to the usual constraints derived from experiments. The energy of the system is calculated using an Environment Dependence Interaction Potential (EDIP). Ions effects is studied by comparing correlations between water molecules in the solution and in pure water at room temperature Our results show a good agreement between experimental and computed partial distribution functions (PDFs) as well as a significant improvement in orientational distribution curves. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=LiCl6H2O" title="LiCl6H2O">LiCl6H2O</a>, <a href="https://publications.waset.org/abstracts/search?q=glassy%20state" title=" glassy state"> glassy state</a>, <a href="https://publications.waset.org/abstracts/search?q=RMC" title=" RMC"> RMC</a>, <a href="https://publications.waset.org/abstracts/search?q=HRMC" title=" HRMC"> HRMC</a> </p> <a href="https://publications.waset.org/abstracts/38320/orientational-pair-correlation-functions-modelling-of-the-licl6h2o-by-the-hybrid-reverse-monte-carlo-using-an-environment-dependence-interaction-potential" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38320.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">471</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">1027</span> Encounters with the Other Sisters of the Past: the Role of Colonial History and Memory in the Adjustment of the Postcolonial Female Identity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatiha%20Ka%C3%AFd%20Berrahal">Fatiha Kaïd Berrahal</a>, <a href="https://publications.waset.org/abstracts/search?q=Nassima%20Ka%C3%AFd"> Nassima Kaïd</a>, <a href="https://publications.waset.org/abstracts/search?q=Djihad%20Affaf%20Selt"> Djihad Affaf Selt</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present paper is a comparative analysis of the Algerian writer Assia Djebar’s women of Algiers in Their Apartment (1982) and the Anglo-Egyptian Ahdaf Soueif’s The Map of Love (1999) foregrounded on the female protagonists’ painfully common colonial and patriarchal experiences, though in different geographical regions of North Africa. This study raises questions pertaining, first, to the emerging contemporary genre “Historiographic meta-fiction” in which the novels examined could be inscribed, then, the interplay of colonial history and personal memory that impinges on the development of the identity of the post-colonial female subject. As the novels alternate between the historical and the autobiographical, we currently seek to understand how it is pertinent and pressing for women to excavate the lost and occluded stories of the past for the adjustment of their present personal identities, which are undoubtedly an important part of the identity of a nation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=postcolonial%20feminism" title="postcolonial feminism">postcolonial feminism</a>, <a href="https://publications.waset.org/abstracts/search?q=islamic%20feminism" title=" islamic feminism"> islamic feminism</a>, <a href="https://publications.waset.org/abstracts/search?q=memory" title=" memory"> memory</a>, <a href="https://publications.waset.org/abstracts/search?q=histoirographic%20metafiction" title=" histoirographic metafiction"> histoirographic metafiction</a> </p> <a href="https://publications.waset.org/abstracts/19905/encounters-with-the-other-sisters-of-the-past-the-role-of-colonial-history-and-memory-in-the-adjustment-of-the-postcolonial-female-identity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19905.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">643</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">1026</span> Study of the Thermomechanical Behavior of a Concrete Element</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Douhi%20Reda%20Bouabdellah">Douhi Reda Bouabdellah</a>, <a href="https://publications.waset.org/abstracts/search?q=Khalafi%20Hamid"> Khalafi Hamid</a>, <a href="https://publications.waset.org/abstracts/search?q=Belamri%20Samir"> Belamri Samir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The desire to improve the safety of nuclear reactor containment has revealed the need for data on the thermo mechanical behavior of concrete in case of accident during which the concrete is exposed to high temperatures. The aim of the present work is to study the influence of high temperature on the behavior of ordinary concrete specimens loaded by an effort of compression. A thermal model is developed by discretization volume elements (CASTEM). The results of different simulations, combined with other findings help to bring a physical phenomenon explanation Thermo mechanical concrete structures, which allowed to obtain the variation of the stresses anywhere in point or node and each subsequent temperature different directions X, Y and Z. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concrete" title="concrete">concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=thermic-gradient" title=" thermic-gradient"> thermic-gradient</a>, <a href="https://publications.waset.org/abstracts/search?q=fire%20resistant" title=" fire resistant"> fire resistant</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation%20by%20CASTEM" title=" simulation by CASTEM"> simulation by CASTEM</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20strength" title=" mechanical strength"> mechanical strength</a> </p> <a href="https://publications.waset.org/abstracts/56980/study-of-the-thermomechanical-behavior-of-a-concrete-element" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56980.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">1025</span> Effect of Synthetic Jet on Wind Turbine Noise</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Reda%20Mankbadi">Reda Mankbadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The current work explores the use of Synthetic Jet Actuators (SJAs) for control of the acoustic radiation of a low-speed transitioning airfoil in a uniform stream. In the adopted numerical procedure, the actuator is modeled without its resonator cavity through imposing a simple fluctuating-velocity boundary condition at the bottom of the actuator's orifice. The orifice cavity, with the properly defined boundary condition, is then embedded into the airfoil surface. High-accuracy viscous simulations are then conducted to study the effects of the actuation on sound radiated by the airfoil. Results show that SJA can considerably suppress the radiated sound of the airfoil in uniform incoming stream. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=simulations" title="simulations">simulations</a>, <a href="https://publications.waset.org/abstracts/search?q=aeroacoustics" title=" aeroacoustics"> aeroacoustics</a>, <a href="https://publications.waset.org/abstracts/search?q=wind%20turbine%20noise" title=" wind turbine noise"> wind turbine noise</a>, <a href="https://publications.waset.org/abstracts/search?q=synthetic%20jet%20actuators%20%28SJAs%29" title=" synthetic jet actuators (SJAs)"> synthetic jet actuators (SJAs)</a> </p> <a href="https://publications.waset.org/abstracts/28530/effect-of-synthetic-jet-on-wind-turbine-noise" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28530.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">355</span> </span> </div> </div> <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=Djebar%20Mohammed%20Reda&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=5">5</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=6">6</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=7">7</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=8">8</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=9">9</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=10">10</a></li> <li class="page-item disabled"><span class="page-link">...</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=35">35</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=36">36</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Djebar%20Mohammed%20Reda&page=2" rel="next">&rsaquo;</a></li> </ul> </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 foundational anniversary</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Account <li><a href="https://waset.org/profile">My Account</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Explore <li><a href="https://waset.org/disciplines">Disciplines</a></li> <li><a href="https://waset.org/conferences">Conferences</a></li> 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