Benmahammed Khier, Saddek Bouharati

كلية العلوم الهندسية-جامعة فرحات عباس - سطيف1 · الجزائر

Les méthodes classiques de détection de la pollution microbiologique de l’eau sontbasées sur la détection des bactéries Escherichia coli qui sont considérées commeindicatrices de contamination. Ces méthodes utilisent des techniques simples delaboratoire. La détection de ces bactéries nécessite un temps excessivement long et desopérateurs qualifiés. Ainsi, Ces méthodes quantitatives et qualitatives utilisées pour laconfirmation de la présence ou l’absence de ces bactérie nécessitent une incubation de 24heures.Dans cette étude, nous proposons un nouveau système intelligent pour la détectionde la pollution microbiologique de l’eau. La méthode proposée est basée sur un systèmeutilisant les techniques de l’intelligence artificielle. Les données de départ sont lesvariations des paramètres physico-chimiques accompagnant la croissance bactériennedans un environnement flou (en plus de l’E. coli, d’autres bactéries peuvent coexister etinduisent des paramètres similaires). L’utilisation d’un modèle à logique floue, démontresa capacité de résolution des problèmes dont les données se trouvent dans unenvironnement incertain. Une autre analyse s’avère nécessaire en utilisant les réseaux deneurones artificiels. Le résultat du traitement des données peut être réuni dans un systèmeneuro-floue. Une fois le système élaboré, il sera possible de répondre à la contaminationen termes numérique et symbolique. Une base de données est construite à partir desanalyses expertes suivant les méthodes de laboratoire. Les résultats sont obtenus sur labase des mesures des variations des paramètres physico-chimiques engendrées par lacroissance bactérienne -la température ; le pH ; le potentiel électrique et la conductivitéélectrique- en correspondance avec le nombre bactérien dans différentes variétés d’eau(eaux de surface ; eaux souterraines ; eaux potables et eaux usées). Le résultat instantanéen nombre de bactéries devient alors possible juste par la lecture de ces paramètres àpartir des capteurs spécifiques.

رزان خطاب, رولا كیلاني, محمد بسام أبو حرب

كلية طب الأسنان-جامعة دمشق · سوريا

جفافلة داود, سهام قدور

كلية العلوم الإنسانية والاجتماعية-جامعة محمد خيضر - بسكرة · الجزائر

Michael Lee Berumen, Ashlie Mcivor

جامعة الملك عبدالله للعلوم والتقنية · السعودية

Years of unregulated fishing activity have resulted in low abundances of elasmobranch species in the Saudi Arabian Red Sea. Coastal populations of sharks and rays in the region remain largely understudied and may be at risk from large-scale coastal development projects. Here we aim to address this pressing need for information by using fish market, unmanned aerial vehicle and baited remote underwater video surveys to quantify the abundance and diversity of sharks and rays in coastal habitats in the Saudi Arabian central Red Sea. Our analysis showed that the majority of observed individuals were batoids, specifically blue-spotted ribbontail stingrays (Taeniura lymma) and reticulate whiprays (Himantura sp.). Aerial surveys observed a catch per unit effort two orders of magnitude greater than underwater video surveys, yet did not detect any shark species. In contrast, baited camera surveys observed both lemon sharks (Negaprion acutidens) and tawny nurse sharks (Nebrius ferrugineus), but in very low quantities (one individual of each species). The combination of survey techniques revealed a higher diversity of elasmobranch presence than using either method alone, however many species of elasmobranch known to exist in the Red Sea were not detected. Our results suggest that aerial surveys are a more accurate tool for elasmobranch abundance estimates in low densities over mangrove-associated habitats. The importance of inshore habitats, particularly for batoids, calls for a deeper understanding of habitat use in order to protect these environments in the face of unregulated fishing, mangrove removal, and anticipated developments along the coastline of the Saudi Arabian Red Sea.

إحسان ولد التركي, الوناس أسمع , سهام عموري

كلية العلوم الإنسانية والاجتماعية-جامعة الدكتور يحيى فارس بالمدية · الجزائر

محمد عبدالزھرة حبیب, إبراهيم عبد المهدي صادق

كلية العلوم-جامعة النهرين · العراق

A quantum statistical mechanics model for the BEC phenomenon in fractal media is formulated. This model is based upon the generalized nonextensive Tsallis thermostatistics. The thermodynamic behavior this formulation (the temperature dependence of the condensate thermodynamic properties) is also investigated. In addition to the formulated nonextensive model, a model for bosons harmonically trapped in fractal media based on the extensive thermostatistics is also adopted and its thermodynamic behavior is investigated.The thermodynamic behaviors of the two models (the extensive and the nonextensive) are compared. The comparisons are carried out for two standard fractals (the Sierpinski carpet and the Menger sponge). One of them is topologically embedded in 2D and the other is embedded in 3D.The comparisons reveal that the condensation temperature within the Tsallis (nonextensive) thermostatistics is always less than the corresponding one in the Boltzmann–Gibbs (extensive)mostatistics.Consequently, the condensate thermodynamic properties in Tsallis thermostatistics are always shifted to lower temperatures. These comparisons also show that despite the thermodynamic behaviors for the two ermostatistics are, in general,similar; the condensate thermodynamic properties seem to possess different temperature responses (slopes). The disagreement in the condensation temperature between the two hermostatistics is also justified.

Fathelrahman Abbas Elsheikh, Myada Emad Elsharani Mohammed Mohammed, Salih Mohammed Ahmed

كلية الهندسة والتكنولوجيا-جامعة الجزيرة · السودان

The kinetic of peroxodisulphate ion oxidation reaction of two primary Alcohols, Methanol and Propanol in aqueous solution at 600C and in presence of silver ion as catalyst was determined to study the effect of the chain length in kinetic oxidation of the primary alcohols. Various kinetics runs were carried out by taking appropriate volume of the substrate, catalyst and Peroxodisulphate ion as oxidation agent and thermostated at 600C. At different known time, appropritate volume of sample mixture were added to appropriate volume of potassium iodide in neutral media, the liberated iodine was titrated against standard solution of sodium thiosulphate by using iodometric titration method. The rate constants and order of reactions were determined for both alcohols. The activation energies and some of thermodynamic functions were evaluated for the two alcohols. The order was determined for each component in these study from the evaluated of the initial rates and showed that the orders in the case of methanol were as follows, Methanol follow 1 order, the peroxodisulphate follow 1 order, the silver follow 0.5 order . While in the case of propanol were as follows, Propanol follow 0.8 orders, the peroxodisulphate follow 1 order, and the silver follow 1 order. The values of the activation energies, entropy and enthalpy were evaluated for two alcohols by determination of the rate constant at different temperatures. It was found that the activation energy for methanol = 30.7 kilojoules and for propanol = 17 kilojoules. The value of Enthalpy for Methanol = 27.53 kilojoules and for propanol = 14.3 kilojoules. The value of Entropy for Methanol = -229.5joul and for propanol = -232joul. The result of this study show that there is difference in the value of the order of the catalyst Ag+ in the oxidation kinetics of the two primary alcohols and it is = 0.5 order in the case of Methanol, and it is = 1 order in the case of propanol the differences may be due to the difference in chain length of the two primary alcohols, Methanol have one carbon atom and propanol have three carbon atoms, for this, it is recommended that the effect of the chain length on the oxidation of alcohols must be studied by choosing longer chain alcohols in addition to the short chain one.

Fakhreldeen Ali Yassin , Hiba AlGarrai Abdelsalam, Salwa Elsanousi Hussein

كلية الطب-جامعة الجزيرة · السودان

Family planning (FP) enables individuals(women and men) to plan their families and space their children. The umbrella of FP encompasses a range of services, including: birth spacing through (safety period, condom, lactation, oral combined pills, injectable methods, implant and tudal ligation), provision of FP methods, infertility diagnosis, treatment, counseling, and reproductive health education. This study was conducted to assess the level of knowledge attitude and practice(KAP) among married women in reproductive peroid in Arkaweet area, wad Medani City, Gezira state , Sudan. It is cross sectional community based study. 400 women in reproductive period were interviewed using structured questionnaire .The results of this study reveal that:(53.5%) of females were less than 34years old, (34%) were housewives, (39%) of them were graduated and (17.8%) their education is primary education, (46%) of them were married for more than 9 years, and (76%) of them were having 3 children or less. This study revealed that (97%) of the respondent knew about family planning methods, the most known method was oral contraceptive pills(95.5%) followed by Intra Uterine Contraceptive Device (87.3%) and implant (85%). The most common source of knowledge family and friends (41.8%). It also revealed that (68.5%) of the respondents had positive attitudes towards family planning methods. (64.8%) of the respondents were currently using contraceptive methods. Commonly used methods was contraceptive pill (56.5%).It also revealed that the main reason of non-using of FP methods was husband disagreement (43.2%) followed by the desire to have more children (36.8%).The study concluded that there is a high level of knowledge about family planning methods but the utilization below the optimal level. The study recommends more health education program to be targeted to improve and maintain the practice and provision of FP methods in all health facilities.

ختیم عزوز, رشيد بريكي, عبدالنور ساسي

كلية الاداب واللغات-جامعة محمد بوضياف - المسيلة · الجزائر

تناولت هذه الدراسة في ثناياها كتاب فصوص الحكم وفق المنهج البنيوي ذات التّحرك الآني وتفسير الظواهر اللغويّة في الاستعمال الصوفي الرمزي بحمولاته الدلاليّة عند ابن عربي فحاولنا جاهدين دراسته دراسةً دلاليّة معمقة بوصفها تخدم توجه البّحث العلمي الحديث ، واخترنا البُّعد الدلالي فكان عنوان البحث: " البّعد الدلالي بين نظريّة الحقول الدلاليّة والنظرية السياقيّة في كتاب(فصوص الحِكم) لابن عربي"، فكانت الدراسة التّطبيقيّة لهذا الكتاب كاشفةً عن نقاب الغموض والستر عند ابن عربي، حيث بدأناها بشق عام نظري ثم تناول البحث الشّق التطبيقي بتقديم الكتاب وتفكيكه لاسيما إسقاط نظريتي الحقول الدلاليّة والسياقيّة على هذا الكتاب اللذين ساهما في تبيان المعنى النّصي الدلاليّ له وقد أرست عندنا بعض الاجابات التي من شأوها أن تجيب عن إشكالات البحث : حيث يعمد ابن عربي إلى تخريج المعاني التي يريدها من الآيات والأحاديث بطريقة خاصة في التأويل وأهم حقل دلالي واسع في الفصوص هو حقل الموجودات كما أكد على أن الحق والخلـق وجهـان لحقيقة وجودية واحدة لها كثرة وجودية في الصور والتعينات.

سمية سلامي, عيسى شاغة , فايزة قرجوج

كلية الاداب واللغات-جامعة اكلى محند أولحاج - البويرة · الجزائر

يعدّ العنوان من أهم العتبات النصية في الد ا رسات السيميائية المعاصرة؛ ومفتاحًا سحريًايفكّ الكثير من طلاسم النص، ويسمح لنا بالخوض في دهاليزه، واستكناه ما جاء فيه.إلّّ أنّ لهذه العناوين فاعليّات تجعل القارئ يتيه، مشكلة تشويشًا وارتباكًا؛ وقد تو ل د في نفسهالفضول والرّغبة في دخول النصّ واستنطاقه؛ فهذا التفاوت بين عناوين الج ا رئد ولّد في أنفسنا حاف اً زودافعًا من أجل اختيار هذا البحث )وظائف العنوان وتشكيله الفني في جريدة المساء(؛ كون أنق ا رءة النصوص عبر عناوينها ما ا زلت ميدانا جديدا للبحث يح فز الباحثين للخوض فيه؛ لّسيما فيظ لّ البحوث النقديّة المعاصرة خاصة الدراسات السيميائيّة.