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Amina Djamila</title> <meta name="description" content="Search results for: Yacouba Amina Djamila"> <meta name="keywords" content="Yacouba Amina Djamila"> <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="Yacouba Amina Djamila"> <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> 111</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Yacouba Amina Djamila</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">111</span> Anti-Hyperglycemic Effects and Chemical Analysis of Allium sativum Bulbs Growing in Sudan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ikram%20Mohamed%20Eltayeb%20Elsiddig">Ikram Mohamed Eltayeb Elsiddig</a>, <a href="https://publications.waset.org/abstracts/search?q=Yacouba%20Amina%20Djamila"> Yacouba Amina Djamila</a>, <a href="https://publications.waset.org/abstracts/search?q=Amna%20El%20Hassan%20Hamad"> Amna El Hassan Hamad </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hyperglycemia and diabetes have been treated with several medicinal plants for a long time, meanwhile reduce associated side effects than the synthetic ones. Therefore, the search for more effective and safer anti-diabetic agents derived from plants has become an interest area of active research. A. sativum, belonging to the Liliaceae family is well known for its medicinal uses in African traditional medicine, it used for treating of many human diseases mainly diabetes, high cholesterol, and high blood pressure. The present study was carried out to investigate the anti-hyperglycemic effect of the extracts of A. sativum bulb growing in Sudan on glucose-loaded Wistar albino rats. A. sativum bulbs were collected from local vegetable market at Khourtoum/ Sudan in a fresh form, identified and authenticated by taxonomist, then dried, and extracted with solvents of increasing polarity: petroleum ether, chloroform, ethyl acetate and methanol by using Soxhlet apparatus. The effect of the extracts on glucose uptake was evaluated by using the isolated rats hemidiaphgrams after loading the fasting rats with glucose, and the anti-hyperglycemic effect was investigated on glucose-loaded Wistar albino rats. Their effects were compared to control rats administered with the vehicle and to a standard group administered with Metformin standard drug. The most active extract was analyzed chemically using GC-MS analysis compared to NIST library. The results showed significant anti-diabetic effect of extracts of A. sativum bulb growing in Sudan. Addition to the hypoglycemic activity of A. sativum extracts was found to be decreased with increase in the polarity of the extraction solvent; this may explain the less polarity of substance responsible for the activity and their concentration decreased with polarity increase. The petroleum ether extract possess anti-hyperglycemic activity more significant than the other extracts and the Metformin standard drug with p-value 0.000** of 400mg/kg at 1 hour, 2 hour and four hour; and p-value 0.019*, 0.015* and 0.010* of 200mg/kg at 1 hour, 2 hour and four hour respectively. The GC-MS analysis of petroleum ether extract, with highest anti -diabetes activity showed the presence of Methyl linolate (42.75%), Hexadecanoic acid, methyl ester (10.54%), Methyl α-linolenate (8.36%), Dotriacontane (6.83), Tetrapentacontane (6.33), Methyl 18-methylnonadecanoate (4.8), Phenol,2,2’-methylenebis[6-(1,1-dimethylethyl)-4-methyl] (3.25), Methyl 20-methyl-heneicosanoate (2.70), Pentatriacontane (2.13) and many other minor compounds. The most of these compounds are well known for their anti-diabetic activity. The study concluded that A. sativum bulbs extracts were found to enhanced the reuptake of glucose in the isolated rat hemidiaphragm and have antihyperglycemic effect when evaluated on glucose-loaded albino rats with petroleum ether extract activity more significant than the Metformin standard drug. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Allium" title="Allium">Allium</a>, <a href="https://publications.waset.org/abstracts/search?q=anti-hyperglycemic" title=" anti-hyperglycemic"> anti-hyperglycemic</a>, <a href="https://publications.waset.org/abstracts/search?q=bulbs" title=" bulbs"> bulbs</a>, <a href="https://publications.waset.org/abstracts/search?q=sativum" title=" sativum"> sativum</a> </p> <a href="https://publications.waset.org/abstracts/78023/anti-hyperglycemic-effects-and-chemical-analysis-of-allium-sativum-bulbs-growing-in-sudan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78023.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">168</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">110</span> Synergistic and Antagonistic Interactions between Garlic Extracts and Metformin in Diabetes Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ikram%20Elsiddig">Ikram Elsiddig</a>, <a href="https://publications.waset.org/abstracts/search?q=Yacouba%20Djamila"> Yacouba Djamila</a>, <a href="https://publications.waset.org/abstracts/search?q=Amna%20Hamad"> Amna Hamad </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Abstract—The worldwide increasing of using herbs in form of medicine with or without prescription medications potentiates the interactions between herbal products and conventional medicines; due to more research for herb-drug interactions are needed. for a long time hyperglycemia had been treated with several medicinal plants. A. sativum, belonging to the Liliaceae family is well known for its medicinal uses in African traditional medicine, it used for treating of many human diseases mainly diabetes, high cholesterol and high blood pressure. The purpose of this study is to determine the interaction effect between A. sativum bulb extracts and metformin drug used in diabetes treatment. The in vitro and in vivo evaluation were conducted by glucose reuptake using isolated rats hemidiaphgrams tissue and by estimate glucose tolerance in glucose-loaded wistar albino rats. The results showed that, petroleum ether, chloroform and ethyl acetate extracts were found to have activity of glucose uptake in isolated rats hemidiaphgrams of 24.11 mg/g, 19.07 mg/g and 15.66 mg/g compared to metformin drug of 17 mg/g. These activity were reducded to 17.8 mg/g, 13.59 mg/g and 14.46 mg/g after combination with metformin, metformin itself reduced to 13.59 mg/g, 14.46 mg/g and 12.71 mg/g in comination with chloroform and ethyl acetate. These decrease in activity could be due to herbal–drug interaction between the extracts of A. sativum bulb and metformin drug. The interaction between A. sativum extract and metformin was also shown by in vivo study on the induced hyperglycemic rats. The glucose level after administered of 200 mg/kg was found to be increase with 47.2 % and 17.7% at first and second hour compared to the increase of blood glucose in the control group of 82.6% and76.7%.. At fourth hour the glucose level was became less than normal with 3.4% compared to control which continue to increase with 68.2%. Dose of 400 mg/kg at first hour showed increase in blood glucose of 31.5 %, at second and fourth hours the glucose level was became less than normal with decrease of 3.2 % and 30.4%. After combination the activity was found to be less than that of extract at both high and low dose, whereas, at first and second hour, the glucose level was found to be increase with 50.4% and 21.2%, at fourth hour the glucose level was became less than normal with 14%. Therefore A. sativum could be a potential source for anti-diabetic when it used alone, and it is significant important to use the garlic extract alone instead of combined with Metformin drug in diabetes- treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antagonistic" title="Antagonistic">Antagonistic</a>, <a href="https://publications.waset.org/abstracts/search?q=Garlic" title=" Garlic"> Garlic</a>, <a href="https://publications.waset.org/abstracts/search?q=Metformin" title=" Metformin"> Metformin</a>, <a href="https://publications.waset.org/abstracts/search?q=Synergistic" title=" Synergistic"> Synergistic</a> </p> <a href="https://publications.waset.org/abstracts/78119/synergistic-and-antagonistic-interactions-between-garlic-extracts-and-metformin-in-diabetes-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78119.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">181</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">109</span> Antibacterial Activity of Northern Algerian Honey</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Messaouda%20Belaid">Messaouda Belaid</a>, <a href="https://publications.waset.org/abstracts/search?q=Salima%20Kebbouche-Gana"> Salima Kebbouche-Gana</a>, <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Benaziza"> Djamila Benaziza</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Our study focuses on determining the antibacterial activity of some honeys from northern Algeria. To test this activity, the agar well diffusion methods was employed. The bacterial strains tested were Staphylococcus aureus, Bacillus subtilis, Streptococcus faecalis, Klebsiella pneumoniae, Escherichia coli, and Pseudomonas aeroginosae. The results showed that all the microbes tested were inhibited by all honey used in this study but Those bacteria that appear to be more sensitive to all honey tested are Staphylococcus aureus and Pseudomonas aeroginosae. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=honey" title="honey">honey</a>, <a href="https://publications.waset.org/abstracts/search?q=antibacterial%20activity" title=" antibacterial activity"> antibacterial activity</a>, <a href="https://publications.waset.org/abstracts/search?q=Northern%20Algeria" title=" Northern Algeria"> Northern Algeria</a>, <a href="https://publications.waset.org/abstracts/search?q=Staphylococcus%20aureus" title=" Staphylococcus aureus"> Staphylococcus aureus</a> </p> <a href="https://publications.waset.org/abstracts/13175/antibacterial-activity-of-northern-algerian-honey" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13175.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">394</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">108</span> Numerical Simulation of a Solar Photovoltaic Panel Cooled by a Forced Air System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Nebbali">Djamila Nebbali</a>, <a href="https://publications.waset.org/abstracts/search?q=Rezki%20Nebbali"> Rezki Nebbali</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Ouibrahim"> Ahmed Ouibrahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study focuses on the cooling of a photovoltaic panel (PV). Indeed, the cooling improves the conversion capacity of this one and maintains, under extreme conditions of air temperature, the panel temperature at an appreciable level which avoids the altering. To do this, a fan provides forced circulation of air. Because the fan is supplied by the panel, it is necessary to determine the optimum operating point that unites efficiency of the PV with the consumption of the fan. For this matter, numerical simulations are performed at varying mass flow rates of air, under two extreme air temperatures (50°C, 25°C) and a fixed solar radiation (1000 W.m2) in a case of no wind. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=energy%20conversion" title="energy conversion">energy conversion</a>, <a href="https://publications.waset.org/abstracts/search?q=efficiency" title=" efficiency"> efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=balance%20energy" title=" balance energy"> balance energy</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20cell" title=" solar cell"> solar cell</a> </p> <a href="https://publications.waset.org/abstracts/15688/numerical-simulation-of-a-solar-photovoltaic-panel-cooled-by-a-forced-air-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15688.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">416</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">107</span> Data Mining in Medicine Domain Using Decision Trees and Vector Support Machine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Benhaddouche">Djamila Benhaddouche</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Benyettou"> Abdelkader Benyettou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we used data mining to extract biomedical knowledge. In general, complex biomedical data collected in studies of populations are treated by statistical methods, although they are robust, they are not sufficient in themselves to harness the potential wealth of data. For that you used in step two learning algorithms: the Decision Trees and Support Vector Machine (SVM). These supervised classification methods are used to make the diagnosis of thyroid disease. In this context, we propose to promote the study and use of symbolic data mining techniques. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomedical%20data" title="biomedical data">biomedical data</a>, <a href="https://publications.waset.org/abstracts/search?q=learning" title=" learning"> learning</a>, <a href="https://publications.waset.org/abstracts/search?q=classifier" title=" classifier"> classifier</a>, <a href="https://publications.waset.org/abstracts/search?q=algorithms%20decision%20tree" title=" algorithms decision tree"> algorithms decision tree</a>, <a href="https://publications.waset.org/abstracts/search?q=knowledge%20extraction" title=" knowledge extraction"> knowledge extraction</a> </p> <a href="https://publications.waset.org/abstracts/15138/data-mining-in-medicine-domain-using-decision-trees-and-vector-support-machine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15138.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">559</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">106</span> Simulation of Immiscibility Regions in Sodium Borosilicate Glasses</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Aboutaleb">Djamila Aboutaleb</a>, <a href="https://publications.waset.org/abstracts/search?q=Brahim%20Safi"> Brahim Safi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, sodium borosilicates glasses were prepared by melting in air. These heat-resistant transparent glasses have subjected subsequently isothermal treatments at different times, which have transformed them at opaque glass (milky white color). Such changes indicate that these glasses showed clearly phase separation (immiscibility). The immiscibility region in a sodium borosilicate ternary system was investigated in this work, i.e. to determine the regions from which some compositions can show phase separation. For this we went through the conditions of thermodynamic equilibrium, which were translated later by mathematical equations to find an approximate solution. The latter has been translated in a simulation which was established thereafter to find the immiscibility regions in this type of special glasses. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sodium%20borosilicate" title="sodium borosilicate">sodium borosilicate</a>, <a href="https://publications.waset.org/abstracts/search?q=heat-resistant" title=" heat-resistant"> heat-resistant</a>, <a href="https://publications.waset.org/abstracts/search?q=isothermal%20treatments" title=" isothermal treatments"> isothermal treatments</a>, <a href="https://publications.waset.org/abstracts/search?q=immiscibility" title=" immiscibility"> immiscibility</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamics" title=" thermodynamics"> thermodynamics</a> </p> <a href="https://publications.waset.org/abstracts/6617/simulation-of-immiscibility-regions-in-sodium-borosilicate-glasses" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6617.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">337</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">105</span> Features Dimensionality Reduction and Multi-Dimensional Voice-Processing Program to Parkinson Disease Discrimination</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Meghraoui">Djamila Meghraoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Boudraa"> Bachir Boudraa</a>, <a href="https://publications.waset.org/abstracts/search?q=Thouraya%20Meksen"> Thouraya Meksen</a>, <a href="https://publications.waset.org/abstracts/search?q=M.Boudraa"> M.Boudraa </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Parkinson's disease is a pathology that involves characteristic perturbations in patients’ voices. This paper describes a proposed method that aims to diagnose persons with Parkinson (PWP) by analyzing on line their voices signals. First, Thresholds signals alterations are determined by the Multi-Dimensional Voice Program (MDVP). Principal Analysis (PCA) is exploited to select the main voice principal componentsthat are significantly affected in a patient. The decision phase is realized by a Mul-tinomial Bayes (MNB) Classifier that categorizes an analyzed voice in one of the two resulting classes: healthy or PWP. The prediction accuracy achieved reaching 98.8% is very promising. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Parkinson%E2%80%99s%20disease%20recognition" title="Parkinson’s disease recognition">Parkinson’s disease recognition</a>, <a href="https://publications.waset.org/abstracts/search?q=PCA" title=" PCA"> PCA</a>, <a href="https://publications.waset.org/abstracts/search?q=MDVP" title=" MDVP"> MDVP</a>, <a href="https://publications.waset.org/abstracts/search?q=multinomial%20Naive%20Bayes" title=" multinomial Naive Bayes"> multinomial Naive Bayes</a> </p> <a href="https://publications.waset.org/abstracts/59181/features-dimensionality-reduction-and-multi-dimensional-voice-processing-program-to-parkinson-disease-discrimination" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59181.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">278</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">104</span> Effect of Pre-Plasma Potential on Laser Ion Acceleration</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Djemai%20Bara">Djemai Bara</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Faouzi%20Mahboub"> Mohamed Faouzi Mahboub</a>, <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Bennaceur-Doumaz"> Djamila Bennaceur-Doumaz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, the role of the preformed plasma created on the front face of a target, irradiated by a high intensity short pulse laser, in the framework of ion acceleration process, modeled by Target Normal Sheath Acceleration (TNSA) mechanism, is studied. This plasma is composed of cold ions governed by fluid equations and non-thermal & trapped with densities represented by a "Cairns-Gurevich" equation. The self-similar solution of the equations shows that electronic trapping and the presence of non-thermal electrons in the pre-plasma are both responsible in ion acceleration as long as the proportion of energetic electrons is not too high. In the case where the majority of electrons are energetic, the electrons are accelerated directly by the ponderomotive force of the laser without the intermediate of an accelerating plasma wave. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cairns-Gurevich%20Equation" title="Cairns-Gurevich Equation">Cairns-Gurevich Equation</a>, <a href="https://publications.waset.org/abstracts/search?q=ion%20acceleration" title=" ion acceleration"> ion acceleration</a>, <a href="https://publications.waset.org/abstracts/search?q=plasma%20expansion" title=" plasma expansion"> plasma expansion</a>, <a href="https://publications.waset.org/abstracts/search?q=pre-plasma" title=" pre-plasma"> pre-plasma</a> </p> <a href="https://publications.waset.org/abstracts/105424/effect-of-pre-plasma-potential-on-laser-ion-acceleration" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/105424.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">132</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">103</span> Place and Role of Corporate Governance in Japan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Feddaoui%20Amina">Feddaoui Amina</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In a broad sense, corporate governance covers the organization of the control and management. The term is also used in a narrower sense, to refer to the relationship between shareholders, and the company’s board. There are a lot of discussions devoted to the understanding of the corporate governance role and its principles. In this paper, we are going to describe the definition of corporate governance as a control system and its principles, and find the role of corporate governance and its pillars. Finally, we are going to drop the theoretical study on the case of Japan. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=corporate%20governance" title="corporate governance">corporate governance</a>, <a href="https://publications.waset.org/abstracts/search?q=place" title=" place"> place</a>, <a href="https://publications.waset.org/abstracts/search?q=role" title=" role"> role</a>, <a href="https://publications.waset.org/abstracts/search?q=Japan" title=" Japan"> Japan</a> </p> <a href="https://publications.waset.org/abstracts/48719/place-and-role-of-corporate-governance-in-japan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48719.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">336</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">102</span> Modeling Salam Contract for Profit and Loss Sharing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dchieche%20Amina">Dchieche Amina</a>, <a href="https://publications.waset.org/abstracts/search?q=Aboulaich%20Rajae"> Aboulaich Rajae</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Profit and loss sharing suggests an equitable sharing of risks and profits between the parts involved in a financial transaction. Salam is a contract in which advance payment is made for goods to be delivered at a future date. The purpose of this work is to price a new contract for profit and loss sharing based on Salam contract, using Khiyar Al Ghabn which is an agreement of choice in case of misrepresent facts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Islamic%20finance" title="Islamic finance">Islamic finance</a>, <a href="https://publications.waset.org/abstracts/search?q=shariah%20compliance" title=" shariah compliance"> shariah compliance</a>, <a href="https://publications.waset.org/abstracts/search?q=profi%0Ct%20and%20loss%20sharing" title=" profit and loss sharing"> profit and loss sharing</a>, <a href="https://publications.waset.org/abstracts/search?q=derivatives" title=" derivatives"> derivatives</a>, <a href="https://publications.waset.org/abstracts/search?q=risks" title=" risks"> risks</a>, <a href="https://publications.waset.org/abstracts/search?q=hedging" title=" hedging"> hedging</a>, <a href="https://publications.waset.org/abstracts/search?q=salam%20contract" title=" salam contract"> salam contract</a> </p> <a href="https://publications.waset.org/abstracts/41170/modeling-salam-contract-for-profit-and-loss-sharing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41170.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">332</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">101</span> Performance of Self-Compacting Mortars Containing Foam Glass Granulate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Brahim%20Safi">Brahim Safi</a>, <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Aboutaleb"> Djamila Aboutaleb</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Saidi"> Mohammed Saidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelbaki%20Benmounah"> Abdelbaki Benmounah</a>, <a href="https://publications.waset.org/abstracts/search?q=Fahima%20Benbrahim"> Fahima Benbrahim </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The inorganic wastes are currently used in the manufacture of concretes as mineral additions by cement substitution or as fine/coarse aggregates by replacing traditional aggregates. In this respect, this study aims to valorize the mineral wastes in particular glass wastes to produce granulated foam glass (as fine aggregates). Granulated foam glasses (GFG) were prepared from the glass powder (glass cullet) and foaming agent (limestone) according to applied manufacturing of GFG (at a heat treatment 850 ° C for 20min). After, self-compacting mortars were elaborated with fine aggregate (sand) and other variant mortars with granulated foam glass at volume ratio (0, 30, 50 and 100 %). Rheological characterization tests (fluidity) and physic-mechanical (density, porosity /absorption of water and mechanical tests) were carried out on studied mortars. The results obtained show that a slightly decreasing of compressive strength of mortars having lightness very important for building construction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=glass%20wastes" title="glass wastes">glass wastes</a>, <a href="https://publications.waset.org/abstracts/search?q=lightweight%20aggregate" title=" lightweight aggregate"> lightweight aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=mortar" title=" mortar"> mortar</a>, <a href="https://publications.waset.org/abstracts/search?q=fluidity" title=" fluidity"> fluidity</a>, <a href="https://publications.waset.org/abstracts/search?q=density" title=" density"> density</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/40043/performance-of-self-compacting-mortars-containing-foam-glass-granulate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40043.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">228</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">100</span> Waad Bil Mourabaha Pricing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dchieche%20Amina">Dchieche Amina</a>, <a href="https://publications.waset.org/abstracts/search?q=Aboulaich%20Rajae"> Aboulaich Rajae</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we will modelize Waad Bil Mourabaha contract. This islamic contract provides the right to buy goods at a future date with a Mourabaha. Waad is a promise of sale or purchase of goods, declared in a unilateral way. In spite of the divergence between some schools of Islamic law about the Waad, this contract will allow us to study sophisticated and interesting contract: Waad Bil Mourabaha that can be used for hedging. In order to price Waad Bil Mourabaha contract, we will use an adapted Black and Scholes model using the Shariah compliant assumptions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Islamic%20finance" title="Islamic finance">Islamic finance</a>, <a href="https://publications.waset.org/abstracts/search?q=Black-Scholes%20model" title=" Black-Scholes model"> Black-Scholes model</a>, <a href="https://publications.waset.org/abstracts/search?q=call%20option" title=" call option"> call option</a>, <a href="https://publications.waset.org/abstracts/search?q=risks" title=" risks"> risks</a>, <a href="https://publications.waset.org/abstracts/search?q=hedging" title=" hedging"> hedging</a> </p> <a href="https://publications.waset.org/abstracts/15514/waad-bil-mourabaha-pricing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15514.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">507</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">99</span> Robust Optimisation Model and Simulation-Particle Swarm Optimisation Approach for Vehicle Routing Problem with Stochastic Demands</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohanad%20Al-Behadili">Mohanad Al-Behadili</a>, <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Ouelhadj"> Djamila Ouelhadj</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a specific type of vehicle routing problem under stochastic demand (SVRP) is considered. This problem is of great importance because it models for many of the real world vehicle routing applications. This paper used a robust optimisation model to solve the problem along with the novel Simulation-Particle Swarm Optimisation (Sim-PSO) approach. The proposed Sim-PSO approach is based on the hybridization of the Monte Carlo simulation technique with the PSO algorithm. A comparative study between the proposed model and the Sim-PSO approach against other solution methods in the literature has been given in this paper. This comparison including the Analysis of Variance (ANOVA) to show the ability of the model and solution method in solving the complicated SVRP. The experimental results show that the proposed model and Sim-PSO approach has a significant impact on the obtained solution by providing better quality solutions comparing with well-known algorithms in the literature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=stochastic%20vehicle%20routing%20problem" title="stochastic vehicle routing problem">stochastic vehicle routing problem</a>, <a href="https://publications.waset.org/abstracts/search?q=robust%20optimisation%20model" title=" robust optimisation model"> robust optimisation model</a>, <a href="https://publications.waset.org/abstracts/search?q=Monte%20Carlo%20simulation" title=" Monte Carlo simulation"> Monte Carlo simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=particle%20swarm%20optimisation" title=" particle swarm optimisation"> particle swarm optimisation</a> </p> <a href="https://publications.waset.org/abstracts/86908/robust-optimisation-model-and-simulation-particle-swarm-optimisation-approach-for-vehicle-routing-problem-with-stochastic-demands" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86908.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">277</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">98</span> Elaboration of Polymethylene Blue on Conducting Glassy Substrate and Study of Its Optical, Electrical and Photoelectrochemical Characterization</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdi%20Djamila">Abdi Djamila</a>, <a href="https://publications.waset.org/abstracts/search?q=Haffar%20Hichem"> Haffar Hichem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The poly methylene bleu (PMB) has been successfully electro deposited on ﬂuorine doped tin oxide (FTO) conducting glass as substrate. Its optical, electrical and photoelectrochemical characterizations have been carried out in order to show the performances of such polymer. The deposited ﬁlm shows a good electric conductivity which is well conﬁrmed by the low gap value determinated optically by UV–vis spectroscopy. Like all polymers the PMB presents an absorption difference in the visible range function of the polarization potential, it is expressed by the strong conjugation at oxidized state but is weakened with leucoform formation at reduced state. The electrochemical analysis of the films permit to show the cyclic voltamperogram with the anodic oxidation and cathodic reduction states of the polymer and to locate the corresponding energy levels HOMO and LUMO of this later. The electrochemical impedance spectroscopy permit to see the conductive character of such film and to calculate important parameters as Rtc and CPE. The study of the photoelectro activity of our polymer shows that under exposure to intermittent light source this later exhibit important photocurrents which enables it to be used in photo organic ells. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=polymethylene%20blue" title="polymethylene blue">polymethylene blue</a>, <a href="https://publications.waset.org/abstracts/search?q=electropolymerization" title=" electropolymerization"> electropolymerization</a>, <a href="https://publications.waset.org/abstracts/search?q=homo-lumo" title=" homo-lumo"> homo-lumo</a>, <a href="https://publications.waset.org/abstracts/search?q=photocurrents" title=" photocurrents"> photocurrents</a> </p> <a href="https://publications.waset.org/abstracts/24820/elaboration-of-polymethylene-blue-on-conducting-glassy-substrate-and-study-of-its-optical-electrical-and-photoelectrochemical-characterization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24820.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">271</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">97</span> UK GAAP and IFRS Standards: Similarities and Differences</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Feddaoui%20Amina">Feddaoui Amina</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper aimed to help researchers and international companies to the differences and similarities between IFRS (International financial reporting standards) and UK GAAP or UK accounting principles, and to the accounting changes between standard setting of the International Accounting Standards Board and the Accounting Standards Board in United Kingdom. We will use in this study statistical methods to calculate similarities and difference frequencies between the UK standards and IFRS standards, according to the PricewaterhouseCoopers report in 2005. We will use the one simple test to confirm or refuse our hypothesis. In conclusion, we found that the gap between UK GAAP and IFRS is small. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=accounting" title="accounting">accounting</a>, <a href="https://publications.waset.org/abstracts/search?q=UK%20GAAP" title=" UK GAAP"> UK GAAP</a>, <a href="https://publications.waset.org/abstracts/search?q=IFRS" title=" IFRS"> IFRS</a>, <a href="https://publications.waset.org/abstracts/search?q=similarities" title=" similarities"> similarities</a>, <a href="https://publications.waset.org/abstracts/search?q=differences" title=" differences"> differences</a> </p> <a href="https://publications.waset.org/abstracts/73469/uk-gaap-and-ifrs-standards-similarities-and-differences" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/73469.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">210</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">96</span> Creative Accounting as a Financial Numbers Game</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Feddaoui%20Amina">Feddaoui Amina</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Through this study we will try to shed light on the theoretical framework proposed for understanding creative accounting as a financial numbers game and one of the most important techniques of accounts manipulation, its main actors and its practices. We will discover the role of the modified Jones model (1995) in detecting creative accounting practices using discretionary accruals. Finally we will try to confirm the importance and the need to address this type of practices using corporate governance as a main control system and an important defense line to reduce these dangerous accounts manipulation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=financial%20numbers%20game" title="financial numbers game">financial numbers game</a>, <a href="https://publications.waset.org/abstracts/search?q=creative%20accounting" title=" creative accounting"> creative accounting</a>, <a href="https://publications.waset.org/abstracts/search?q=modified%20Jones%20model" title=" modified Jones model"> modified Jones model</a>, <a href="https://publications.waset.org/abstracts/search?q=accounts%20manipulation" title=" accounts manipulation"> accounts manipulation</a> </p> <a href="https://publications.waset.org/abstracts/4023/creative-accounting-as-a-financial-numbers-game" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4023.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">477</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">95</span> Antimicrobial Activity of Oil Extracted from the Almonds of the Fruits of Argania spinosa in the West of Algeria (Mostaganem)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nassima%20Behidj-Benyounes">Nassima Behidj-Benyounes</a>, <a href="https://publications.waset.org/abstracts/search?q=Nadjiba%20Chebouti"> Nadjiba Chebouti</a>, <a href="https://publications.waset.org/abstracts/search?q=Thoraya%20Dahmane"> Thoraya Dahmane</a>, <a href="https://publications.waset.org/abstracts/search?q=Amina%20Henni"> Amina Henni </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work examines the study of the antimicrobrial effect of oil extracted from the seeds of Argania spinosa L. (Sapotaceae) in the area of Stida (Mostaganem). This natural substance is extracted by using the Soxhlet. The antimicrobial activity of this oil is evaluated on several microorganisms. It has been tested on five bacterial strains; Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Bacillus subtilis and Staphylococcus aureus. The extract has been studied by using Candida albicans. It should be noted that these agents are characterized by a high frequency of contamination and pathogenicity. Through this study, we note that these microorganisms are moderately sensitive to the argan oil. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Argania%20spinosa" title="Argania spinosa">Argania spinosa</a>, <a href="https://publications.waset.org/abstracts/search?q=oil" title=" oil"> oil</a>, <a href="https://publications.waset.org/abstracts/search?q=several%20microorganisms" title=" several microorganisms"> several microorganisms</a>, <a href="https://publications.waset.org/abstracts/search?q=almonds" title=" almonds"> almonds</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/8822/antimicrobial-activity-of-oil-extracted-from-the-almonds-of-the-fruits-of-argania-spinosa-in-the-west-of-algeria-mostaganem" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8822.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">416</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">94</span> The Study of the Determinants of Impulse Buying in Algeria </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amina%20Merabet">Amina Merabet</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Iznasni"> Ali Iznasni</a>, <a href="https://publications.waset.org/abstracts/search?q=Abderrezzak%20Benhabib"> Abderrezzak Benhabib</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Impulse buying is of strategic importance to distributors. Currently, distribution companies rely heavily on contextual variables (music, smells, colors, sound, design ...) in order to push customers towards purchase and consumption. As such, a crucial way for commercial brands to increase sales is to stimulate impulse buying. For this reason, this study aims at identifying the factors that initiate and encourage impulse buying, as well as the levers that help distributors highlight effective marketing techniques in order to encourage consumers to make impulse purchase. Thus, we try to show, upon a field survey of 590 buyers, the impact of situational elements of both the store and the product on achieving impulse buying. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Algerian%20shoppers" title="Algerian shoppers">Algerian shoppers</a>, <a href="https://publications.waset.org/abstracts/search?q=impulse%20buying" title=" impulse buying"> impulse buying</a>, <a href="https://publications.waset.org/abstracts/search?q=shopping%20environment" title=" shopping environment"> shopping environment</a>, <a href="https://publications.waset.org/abstracts/search?q=situational%20variables" title=" situational variables"> situational variables</a>, <a href="https://publications.waset.org/abstracts/search?q=product" title=" product"> product</a> </p> <a href="https://publications.waset.org/abstracts/27654/the-study-of-the-determinants-of-impulse-buying-in-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27654.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">351</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">93</span> Evaluation of Cytotoxic Effect of Two Diterpenes from Plectranthus barbatus</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nawal%20Al%20Musayeib">Nawal Al Musayeib</a>, <a href="https://publications.waset.org/abstracts/search?q=Musarat%20Amina"> Musarat Amina</a>, <a href="https://publications.waset.org/abstracts/search?q=Perwez%20Alam"> Perwez Alam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Plectranthus barbatus Andrews (Lamiaceae) is the most common species of genus Plectranthus. It is used for treating various ailments. In this study, two rare diterpenes 11,14-dihydroxy-8,11,13-abietatrien-7-one (1) and 12-hydroxyabieta-8(14),9(11),12-trien-7-one (2) were isolated for the first time from P. barbatus. Their chemical structures were verified utilizing various spectroscopic experiments. The effect of diterpenes against undifferentiated/anaplastic thyroid cancer cell line (FRO) was evaluated and they were quantitatively analysed using HPTLC method. The two diterpenes were found to be cytotoxic, however compound 1 showed significant cytotoxic effects where 95% reduction in the cell viability was observed in different time intervals. The quantity of compound 1 and compound 2 in PBCE were found to be 2.04 and15.97 μg/mg, respectively of dried weight of the extract. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=abietatrien" title="abietatrien">abietatrien</a>, <a href="https://publications.waset.org/abstracts/search?q=cancer" title=" cancer"> cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=diterpenes" title=" diterpenes"> diterpenes</a>, <a href="https://publications.waset.org/abstracts/search?q=Plectranthus%20barbatus" title=" Plectranthus barbatus"> Plectranthus barbatus</a> </p> <a href="https://publications.waset.org/abstracts/71874/evaluation-of-cytotoxic-effect-of-two-diterpenes-from-plectranthus-barbatus" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71874.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">255</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">92</span> Modeling and Simulation of Organic Solar Cells Based on P3HT:PCBM using SCAPS 1-D (Influence of Defects and Temperature on the Performance of the Solar Cell)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Souhila%20Boukli%20Hacene">Souhila Boukli Hacene</a>, <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Kherbouche"> Djamila Kherbouche</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelhak%20Chikhaoui"> Abdelhak Chikhaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we elucidate theoretically the effect of defects and temperature on the performance of the organic bulk heterojunction solar cell (BHJ) P3HT: PCBM. We have studied the influence of their parameters on cell characteristics. For this purpose, we used the effective medium model and the solar cell simulator (SCAPS) to model the characteristics of the solar cell. We also explore the transport of charge carriers in the device. It was assumed that the mixture is lightly p-type doped and that the band gap contains acceptor defects near the HOMO level with a Gaussian distribution of energy states at 100 and 50 meV. We varied defects density between 1012-1017 cm-3, from 1016 cm-3, a total decrease of the photovoltaic characteristics due to the increase of the non-radiative recombination can be noticed. Then we studied the effect of variation of the electron and the hole capture cross-section on the cell’s performance, we noticed that the cell obtains a better efficiency of about 3.6% for an electron capture cross section ≤ 10-15 cm2 and a hole capture cross section ≤ 10-19 cm2. On the other hand, we also varied the temperature between 120K and 400K. We observed that the temperature of the solar cell induces a noticeable effect on its voltage. While the effect of temperature on the solar cell current is negligible. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=organic%20solar%20cell" title="organic solar cell">organic solar cell</a>, <a href="https://publications.waset.org/abstracts/search?q=P3HT%3APCBM" title=" P3HT:PCBM"> P3HT:PCBM</a>, <a href="https://publications.waset.org/abstracts/search?q=defects" title=" defects"> defects</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=SCAPS" title=" SCAPS"> SCAPS</a> </p> <a href="https://publications.waset.org/abstracts/164758/modeling-and-simulation-of-organic-solar-cells-based-on-p3htpcbm-using-scaps-1-d-influence-of-defects-and-temperature-on-the-performance-of-the-solar-cell" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164758.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">91</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">91</span> Current Environmental Accounting Disclosure Requirements and Compliance by Nigerian Oil Companies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amina%20Jibrin%20Ahmed">Amina Jibrin Ahmed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The environment is mankind's natural habitat. Industrial activities over time have taken their toll on it in the form of deterioration and degradation. The petroleum industry is particularly notorious for its negative impact on its host environments. The realization that this poses a threat to sustainability led to the increased awareness and subsequent recognition of the importance of environmental disclosure in financial statements. This paper examines the laws and regulations put in place by the Nigerian Government to mitigate this impact, and the level of compliance by Shell Nigeria, the pioneer and largest oil company in the country. Based on the disclosure made, this paper finds there is indeed a high level of compliance by that company, and voluntary disclosure moreover. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=environmental%20accounting" title="environmental accounting">environmental accounting</a>, <a href="https://publications.waset.org/abstracts/search?q=legitimacy%20theory" title=" legitimacy theory"> legitimacy theory</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20impact%20assessment" title=" environmental impact assessment"> environmental impact assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20disclosure" title=" environmental disclosure"> environmental disclosure</a>, <a href="https://publications.waset.org/abstracts/search?q=host%20communities" title=" host communities"> host communities</a> </p> <a href="https://publications.waset.org/abstracts/14266/current-environmental-accounting-disclosure-requirements-and-compliance-by-nigerian-oil-companies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14266.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">517</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">90</span> Prevalence of Thyroid Disorders in Pregnancy in Northern Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samira%20Akdader-Oudahmane">Samira Akdader-Oudahmane</a>, <a href="https://publications.waset.org/abstracts/search?q=Assia%20Kamel"> Assia Kamel</a>, <a href="https://publications.waset.org/abstracts/search?q=Lynda%20Lakabi"> Lynda Lakabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Bruce%20Zimmermann"> Michael Bruce Zimmermann</a>, <a href="https://publications.waset.org/abstracts/search?q=Zohra%20Hamouli-Said"> Zohra Hamouli-Said</a>, <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Meskine"> Djamila Meskine</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Iodine is a trace element whose adequate intakes are essential during pregnancy to promote the correct growth and development of the fetus. Iodine deficiency is the cause of several disorders in foetal development, and thyroid disorders during pregnancy are associated with an increased risk of miscarriage or premature birth. The aim of this study was to assess the iodine status and thyroid function of pregnant women (PW) in northern Algeria. Methods: Healthy PW were recruited from an urban area (Algiers). Spot urine and venous blood samples were collected to assess iodine status (urinary iodine concentration, UIC) and serum thyroid hormones (TSH, FT4), and anti-thyroid peroxidase antibodies (TPO-Ab) concentrations. Results: The median UIC for the PW (n=172) in Algiers was 246,74µg/L, 244,68 µg/L, and 220,63µg/L, respectively, during the first, second, and third trimesters of pregnancy. Mean TSH and FT4 concentrations were within reference ranges in all groups of women. Among PW, 72.7%, 75.4%, and 75.5% in the first, second and third trimester were TPO-Ab+. Among PW, 14%, 10%, and 10% in the first, second and third trimester, respectively, with TPO -Ab+ had subclinical hypothyroidism. An analysis of the variations in the levels of the serum parameters (FT4, TSH and anti-TPO antibodies) was analyzed according to the UIC intervals admitted and show that these marker are predictive of thyroid function. Conclusion: In northern Algeria, median UICs indicate iodine sufficiency in PW. About 75% of PW are TPO-Ab+ and the prevalence of subclinical hypothyroidism is high. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thyroid" title="thyroid">thyroid</a>, <a href="https://publications.waset.org/abstracts/search?q=pregnant%20woman" title=" pregnant woman"> pregnant woman</a>, <a href="https://publications.waset.org/abstracts/search?q=urinary%20iodine" title=" urinary iodine"> urinary iodine</a>, <a href="https://publications.waset.org/abstracts/search?q=subclinical%20hypothyroidism" title=" subclinical hypothyroidism"> subclinical hypothyroidism</a> </p> <a href="https://publications.waset.org/abstracts/166232/prevalence-of-thyroid-disorders-in-pregnancy-in-northern-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166232.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">78</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">89</span> Effects of the Ambient Temperature and the Defect Density on the Performance the Solar Cell (HIT)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bouzaki%20Mohammed%20Moustafa">Bouzaki Mohammed Moustafa</a>, <a href="https://publications.waset.org/abstracts/search?q=Benyoucef%20Boumediene"> Benyoucef Boumediene</a>, <a href="https://publications.waset.org/abstracts/search?q=Benouaz%20Tayeb"> Benouaz Tayeb</a>, <a href="https://publications.waset.org/abstracts/search?q=Benhamou%20Amina"> Benhamou Amina</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The ambient temperature and the defects density in the Hetero-junction with Intrinsic Thin layers solar cells (HIT) strongly influence their performances. In first part, we presented the bands diagram on the front/back simulated solar cell based on a-Si: H / c-Si (p)/a-Si:h. In another part, we modeled the following layers structure: ZnO/a-Si:H(n)/a-Si:H(i)/c-Si(p)/a-Si:H(p)/Ag where we studied the effect of the ambient temperature and the defects density in the gap of the crystalline silicon layer on the performance of the heterojunction solar cell with intrinsic layer (HIT). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heterojunction%20solar%20cell" title="heterojunction solar cell">heterojunction solar cell</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20cell%20performance" title=" solar cell performance"> solar cell performance</a>, <a href="https://publications.waset.org/abstracts/search?q=bands%20diagram" title=" bands diagram"> bands diagram</a>, <a href="https://publications.waset.org/abstracts/search?q=ambient%20temperature" title=" ambient temperature"> ambient temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=defect%20density" title=" defect density "> defect density </a> </p> <a href="https://publications.waset.org/abstracts/21496/effects-of-the-ambient-temperature-and-the-defect-density-on-the-performance-the-solar-cell-hit" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21496.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">507</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">88</span> Mineralogical Characteristics of Phosphates from the Djebel Onk Deposits: Treatment and Valorization of Co-Products</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samira%20Tlili">Samira Tlili</a>, <a href="https://publications.waset.org/abstracts/search?q=Amina%20Grairia"> Amina Grairia</a>, <a href="https://publications.waset.org/abstracts/search?q=Sihem%20Benayache"> Sihem Benayache</a>, <a href="https://publications.waset.org/abstracts/search?q=Saida%20Bouyegh"> Saida Bouyegh</a>, <a href="https://publications.waset.org/abstracts/search?q=Sabrina%20Ladjama"> Sabrina Ladjama</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelmoumen%20Guedri"> Abdelmoumen Guedri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Phosphorites from Djebel Onk Tebessa/Algeria deposit contain a CaO of 50-52 wt. % and P₂O₅ level of ≥ 30.20 wt. %. The microstructure revealed using a spectroscopy electronic microscope (SEM) consists of phosphate granules with an ovular form. In this investigation, we have identified phosphate with varying particle sizes using mineralogical methods. The phosphogypsum formed by the mineralization of natural phosphate has also been discovered. This co-product was formed during the attack on natural phosphates by sulfuric acid. This study demonstrated the effectiveness of the thermoanalytical technique of differential scanning calorimetry (DSC), X-ray diffraction, and EDS/MEB analysis. FTIR analyses also validated the identification of mineral phases with the observation of bands from structural phosphate groups. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phosphate" title="phosphate">phosphate</a>, <a href="https://publications.waset.org/abstracts/search?q=Djebel%20Onk%20deposit" title=" Djebel Onk deposit"> Djebel Onk deposit</a>, <a href="https://publications.waset.org/abstracts/search?q=mineralogy" title=" mineralogy"> mineralogy</a>, <a href="https://publications.waset.org/abstracts/search?q=valorization" title=" valorization"> valorization</a>, <a href="https://publications.waset.org/abstracts/search?q=phosphogypsum" title=" phosphogypsum"> phosphogypsum</a> </p> <a href="https://publications.waset.org/abstracts/191994/mineralogical-characteristics-of-phosphates-from-the-djebel-onk-deposits-treatment-and-valorization-of-co-products" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/191994.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">22</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">87</span> Simulation and Experimental of Solid Mixing of Free Flowing Material Using Solid Works in V-Blender</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amina%20Bouhaouche">Amina Bouhaouche</a>, <a href="https://publications.waset.org/abstracts/search?q=Zineb%20Kaoua"> Zineb Kaoua</a>, <a href="https://publications.waset.org/abstracts/search?q=Lila%20Lahreche"> Lila Lahreche</a>, <a href="https://publications.waset.org/abstracts/search?q=Sid%20Ali%20Kaoua"> Sid Ali Kaoua</a>, <a href="https://publications.waset.org/abstracts/search?q=Kamel%20Daoud"> Kamel Daoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of this study is to present a novel approach for analyzing the solid dispersion and mixing performance by a numerical simulation method using solid works software of a monodisperse particles for a large span of time reached 20 minutes. To assure the viability of a numerical simulation, an experimental study of a binary mixture of monodiperse particles taken as free flowing material in a V blender was developed on the basis of relative standard deviation curves, and the arrangement of the particles in the vessel. The experimental results were discussed and compared to the numerical simulation results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=non-cohesive%20material" title="non-cohesive material">non-cohesive material</a>, <a href="https://publications.waset.org/abstracts/search?q=solid%20mixing" title=" solid mixing"> solid mixing</a>, <a href="https://publications.waset.org/abstracts/search?q=solid%20works" title=" solid works"> solid works</a>, <a href="https://publications.waset.org/abstracts/search?q=v-blender" title=" v-blender"> v-blender</a> </p> <a href="https://publications.waset.org/abstracts/38632/simulation-and-experimental-of-solid-mixing-of-free-flowing-material-using-solid-works-in-v-blender" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38632.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">390</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">86</span> Dynamical and Thermal Study of Twin Impinging Jets a Vertical Plate with Various Jet Velocities and Impinging Distance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Louaifi%20Hamaili%20Samira">Louaifi Hamaili Samira</a>, <a href="https://publications.waset.org/abstracts/search?q=Mataoui%20Amina"> Mataoui Amina</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheraitia%20Tadjeddine"> Cheraitia Tadjeddine</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This investigation proposes a numerical analysis of two turbulent parallel jets impinging a heated plate. The heat transfer enhancement is carried out according of the main parameters of the jet-wall interaction. The numerical solution of the stationary equations (RANS) is performed by the finite volume method using the k - ε model. A parametric study is performed to evaluate simultaneously the effect of nozzle-plate distance and velocity ratios in the range 0≤λ≤1. It is found that good local cooling is obtained for λ= 0.25 when the impinging distance is between 4w and 8w than for velocity ratios λ=1 and λ= 0.75. On the other hand, for impinging distances exceeding 8w, the velocity ratio λ =0.75 is more appropriate for good local cooling of the plate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=two%20unequal%20jets" title="two unequal jets">two unequal jets</a>, <a href="https://publications.waset.org/abstracts/search?q=turbulence" title=" turbulence"> turbulence</a>, <a href="https://publications.waset.org/abstracts/search?q=mixing" title=" mixing"> mixing</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title=" heat transfer"> heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD" title=" CFD"> CFD</a> </p> <a href="https://publications.waset.org/abstracts/188280/dynamical-and-thermal-study-of-twin-impinging-jets-a-vertical-plate-with-various-jet-velocities-and-impinging-distance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188280.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">32</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">85</span> Heat Transfer Performance for Turbulent Flow through a Tube Using Baffles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amina%20Benabderrahmane">Amina Benabderrahmane</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelylah%20Benazza"> Abdelylah Benazza</a>, <a href="https://publications.waset.org/abstracts/search?q=Samir%20Laouedj"> Samir Laouedj</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Three dimensional numerical investigation of heat transfer enhancement inside a non-uniformly heated parabolic trough solar collector fitted with baffles under turbulent flow was studied in the current paper. Molten salt is used as heat transfer fluid and simulations are carried out in ANSYS computational fluid dynamics (CFD). The present data was validating by the empirical correlations available in the literatures and good agreement was obtained. The Nusselt number and friction factor values for using baffles are considerably higher than that for smooth pipe. The emplacement and the distance between two consecutive baffles have an effect non-negligible on heat transfer characteristics; the results demonstrate that the temperature gradient reduces with the inclusion of inserts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Baffles" title="Baffles">Baffles</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer%20enhancement" title=" heat transfer enhancement"> heat transfer enhancement</a>, <a href="https://publications.waset.org/abstracts/search?q=molten%20salt" title=" molten salt"> molten salt</a>, <a href="https://publications.waset.org/abstracts/search?q=Monte%20Carlo%20ray%20trace%20technique" title=" Monte Carlo ray trace technique"> Monte Carlo ray trace technique</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20investigation" title=" numerical investigation "> numerical investigation </a> </p> <a href="https://publications.waset.org/abstracts/56049/heat-transfer-performance-for-turbulent-flow-through-a-tube-using-baffles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56049.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">300</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">84</span> State of Art in Software Requirement Negotiation Process Models</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shamsu%20Abdullahi">Shamsu Abdullahi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nazir%20Yusuf"> Nazir Yusuf</a>, <a href="https://publications.waset.org/abstracts/search?q=Hazrina%20Sofian"> Hazrina Sofian</a>, <a href="https://publications.waset.org/abstracts/search?q=Abubakar%20Zakari"> Abubakar Zakari</a>, <a href="https://publications.waset.org/abstracts/search?q=Amina%20Nura"> Amina Nura</a>, <a href="https://publications.waset.org/abstracts/search?q=Salisu%20Suleiman"> Salisu Suleiman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Requirements negotiation process models help in resolving conflicting requirements of the heterogeneous stakeholders in the software development industry. This is to achieve a shared vision of software projects to be developed by the industry. Negotiating stakeholder agreements is a serious and difficult task in the software development process. There are many requirements negotiation process models that effectively negotiate stakeholder agreements that have been proposed by the research community. Other issues in the requirements negotiation research domain include stakeholder communication, decision-making, lack of negotiation interoperability, and managing requirement changes and analysis. This study highlights the current state of the art in the existing software requirements negotiation process models. The study also describes the issues and limitations in the software requirements negotiations process models. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=requirements" title="requirements">requirements</a>, <a href="https://publications.waset.org/abstracts/search?q=negotiation" title=" negotiation"> negotiation</a>, <a href="https://publications.waset.org/abstracts/search?q=stakeholders" title=" stakeholders"> stakeholders</a>, <a href="https://publications.waset.org/abstracts/search?q=agreements" title=" agreements"> agreements</a> </p> <a href="https://publications.waset.org/abstracts/161397/state-of-art-in-software-requirement-negotiation-process-models" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161397.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">197</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">83</span> Appraisal of Maintenance Practices in Selected Tourist Attraction in Bauchi State, Nigeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eldah%20Ephraim%20Buba">Eldah Ephraim Buba</a>, <a href="https://publications.waset.org/abstracts/search?q=Amina%20Bata%20Zoaka"> Amina Bata Zoaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Aishatu%20Ibrahim"> Aishatu Ibrahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study appraised maintenance practices in selected tourist attractions in Bauchi state, Nigeria. Four tourist attractions were used for the research. Checklists were used to assess operations and repairs maintenance practices in the different attractions. The study carried out personal assessment thrice in six months without prior knowledge of the staff in charge for operational maintenance. Records of repairs maintenance from the attractions maintenance unit for a period of ten years were assessed using the checklists. The findings of the study show that operations maintenance was not adequately carried out in the four tourists attractions. Repairs maintenance was carried out in Yankari game reserve and safari, but repairs maintenance was poor in the other three attractions. The study therefore, recommends that adequate maintenance should be practiced in tourist attractions to expand the lifespan of the facilities and also encourage tourist patronage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=appraisal" title="appraisal">appraisal</a>, <a href="https://publications.waset.org/abstracts/search?q=maintenance" title=" maintenance"> maintenance</a>, <a href="https://publications.waset.org/abstracts/search?q=practices" title=" practices"> practices</a>, <a href="https://publications.waset.org/abstracts/search?q=tourist%20attraction" title=" tourist attraction"> tourist attraction</a> </p> <a href="https://publications.waset.org/abstracts/31847/appraisal-of-maintenance-practices-in-selected-tourist-attraction-in-bauchi-state-nigeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31847.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">300</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">82</span> Electronic and Magnetic Properties of the Dy₀.₀₆₂₅Y₀.₉₃₇₅ FeO₃ and Dy₀.₁₂₅ Y₀.₈₇₅ FeO₃ Perovskites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sari%20Aouatef">Sari Aouatef</a>, <a href="https://publications.waset.org/abstracts/search?q=Larabi%20Amina"> Larabi Amina</a> </p> <p class="card-text"><strong>Abstract:</strong></p> First-principles calculations within density functional theory based are used to investigate the influence of doped rare earth elements on some properties of perovskite systems Dy₀.₀₆₂₅Y₀.₉₃₇₅FeO₃ and Dy₀.₁₂₅ Y₀.₈₇₅ FeO₃. The electronic and magnetic properties are studied by means of the full-potential linearized augmented plane wave method with Vasp code. The calculated densities of states presented in this work identify the semiconducting behavior for Dy₀.₁₂₅ Y₀.₈₇₅ FeO₃, and the semi-metallic behavior for Dy₀.₀₆₂₅Y₀.₉₃₇₅ FeO₃. Besides, to investigate magnetic properties of several compounds, four magnetic configurations are considered (ferromagnetic (FM), antiferromagnetic type A (A-AFM), antiferromagnetic type C (C-AFM) and antiferromagnetic type G (G-AFM). By doping the Dy element, the system shows different changes in the magnetic order and electronic structure. It is found that Dy₀.₀₆₂₅Y₀.₉₃₇₅ FeO₃ exhibits the strongest magnetic change corresponding to the transition to the ferromagnetic order with the largest magnetic moment of 4.997. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DFT" title="DFT">DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=Perovskites" title=" Perovskites"> Perovskites</a>, <a href="https://publications.waset.org/abstracts/search?q=multiferroic" title=" multiferroic"> multiferroic</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20properties" title=" magnetic properties"> magnetic properties</a> </p> <a href="https://publications.waset.org/abstracts/144435/electronic-and-magnetic-properties-of-the-dy00625y09375-feo3-and-dy0125-y0875-feo3-perovskites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144435.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">141</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=Yacouba%20Amina%20Djamila&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Yacouba%20Amina%20Djamila&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Yacouba%20Amina%20Djamila&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Yacouba%20Amina%20Djamila&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div 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