ميثاء طالب المحنا المري, ياسر الخلايلة

كلية القانون-جامعة قطر · قطر

ترتكز الدراسة أساسا على الوقوف على موضوع التدابير المؤقتة التي تعتبر من الإجراءات العارضة أمام محكمة العدل الدولية، حيث تمارس المحكمة سلطة الأمر بهذه التدابير بمناسبة قضية منظورة أمامها فعلا، فهي ليست إجراءا مستقلا تأمر به المحكمة، وإنما جزء من العملية القضائية في مرحلة مبكرة.

Khalifa Al Hosani , Mohamed El Moursi , Youssef Ibrahim Badran

جامعة خليفة · الامارات

Microgrids are expected to be the future of energy supply. This is because they are seen as a real solution for the high integration of renewable energy sources and for the electrification of remote areas. Although the control design in islanded microgrids should guarantee power balance and stable operation, there are some reasons why a microgrid may need support from a neighboring one such as uncertainty in renewable energy sources (RES) or load supplied. As a result of the low inertia, studying the stability of interconnected microgrids is crucial. Nevertheless, most of the work in the literature focuses only on small signal stability. To overcome this issue and to provide a tool that is able to assess both small signal and transient stability, dynamic mode decomposition (DMD) is introduced in this work. The proposed method allows tracking system status before, during and post interconnection through estimating system dominant mode online. Different configurations of ac microgrids with different ratings and inertias are modeled to act as a study system to demonstrate the merits of the proposed stability assessment method. A supervisory controller for stable microgrids interconnection based on DMD accurate eigenvalue estimation is proposed. The main advantage of the proposed method compared to the proposed in the literature is being a method for dynamic analysis that covers both transient and small signal stability. It is also more suitable for dealing with higher order systems as it eliminates the need for the complex computations required to construct a small signal linearized model. The results obtained for interconnecting microgrids, and applying the proposed supervisory controller will be discussed to show the superior performance of the controller and the DMD method.

أشواق عبدلي, الحبيب عمي

كلية الآداب واللغات-جامعة عبد الرحمان ميرة - بجاية · الجزائر

تطرقنا في بحثنا إلى توظيف التاريخ في الرواية العربية الحديثة، وأخذنا رواية "الحجاج بن يوسف" أنموذجا، فكان للرواية التاريخية دور فعال، بما أنها تتخذ التاريخ كمادة أساسية لها، والذي من خلاله يستطيع الروائي بناء أحداث روايته. فهي تعتبر من أحدالأجناس الأدبية مثلها مثل الأنواع الروائية الأخرى...

عباس نوري خضير, ناريمان اكرم محمود العكام

كلية الفنون الجميلة-جامعة بابل · العراق

Bilal Elimmam Hamad, Osman Salman Abdallah Mohamoud

كلية الاداب والعلوم الانسانية-جامعة الإمام المهدي · السودان

The present study aims to explore the effects of using information communication technologies ICTs on improving EFL speaking performance. The study focuses on integrating different types of these materials to enhance speaking skill. Also the study concerns with importance of technological materials to create an enjoyable and relaxed atmosphere, and to make students use the target language effectively. The hypotheses confirm that ICTs are great motivator, and these instruments help the EFL students to speak fluently and accurately, as well as to create a good environment that provides with extensive language use and oral performance. The subject is EFL teachers and students at the universities namely university of Sinnar. It consists the students in third and fourth level at the University of Sinnar faculty of education department of English language in the year (2016-2017), they are (40) students and (4) teachers. The study follows the descriptive analytical method. The data is collected via a questionnaire and interview. The data is gathered through two tools students, questionnaire administered to third and fourth year, and the teachers' interview is directed to the teacher at the department of English, Sinnar University. The collected data is analyzed by (SPSS) programme. The results show that the integrating ICTs are the best techniques to enhance students, speaking performance. The study recommends that, EFL teachers at the university need more training and practice on ICTs devices, so as to be familiar to deal with it. In addition, the ministry of higher education should be aware of the importance of ICTs in teaching and learning process.

إنعام علي عبد عباس, عباس عبود فرحان, عبدالرزاق شفيق حسن

كلية التربية للعلوم الصرفة-جامعة ديالي · العراق

Kada Bidai, Mohammed Ameri

جامعة جيلالي ليابس – سيدي بلعباس · الجزائر

Ahmed Ghania , Amina Hafouda, Khaoula Oubiri, Rim Rimi

كلية علوم الطبيعة والحياة-جامعة الشهيد حمة لخضر - الوادي · الجزائر

Dans ce travail, des nanoparticules de zinc dopé par le sélénium ont été synthétisées en utilisant l'extrait de la plante Cichorium intybus L comme agent bioréducteur. Les propriétés des Zn-Se NPs synthétisées par voie verte ont été étudiées par les techniques suivantes : infrarouge FT-IR et diffraction des rayons X. Les activités biologiques antioxydantes ont été évaluées par les tests DPPH, FRAP et le test de blanchiment du β-carotène. Les activités antibactériennes, anti-inflammatoires, anti-hémolytiques, anticoagulantes et l'activité photocatalytique ont également été étudiées. Les rayons X ont confirmé la nature cristalline avec une taille moyenne de 25 nm. L'évaluation de l'efficacité antioxydante a révélé que tous les échantillons ont un faible pouvoir réducteur et de piégeage des radicaux libres. Les nanoparticules de zinc dopé par le sélénium à 0.5 %, 1 % et 2 % synthétisées ont montré un effet moyen antibactérien contre les 4 types de bactéries (Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, Pseudomonas aeruginosa) et la levure (Candida albicans). Tous les échantillons possèdent une forte activité anti-hémolytique et une faible activité anti-inflammatoire, sauf l'échantillon à 0.5 % qui possède une forte activité. Le suivi de l'activité anticoagulante par le temps de céphaline activée (TCA) a montré des temps de coagulation de 34 s pour (0.5 %) et 67 s pour (2 %), tandis que l'échantillon à (1 %) a une forte activité anticoagulante, montrant un temps de coagulation plus allongé de plus de 250 s. L'activité photocatalytique a montré une dégradation plus élevée et plus importante du colorant de bleu de méthylène (échantillon 1 %).

صالحى ابراهيم, قارة يوسف

كلية الاداب واللغات-جامعة محمد بوضياف - المسيلة · الجزائر

*ملخص البحث:حازت النظرة التوليدية التحويلية على انتشار واسع بين المدارس اللغوية، وتصدرت مكانة بين المدارس الحديثة، كونها تهتم بالجانب التحليلي والتفسيري بدلا من الجانب الوصفي، في محاولة جديدة لتقديم صورة واضحة شمولية عن بنية اللغة وميزاتها الإنسانية وعلاقتها بالعقل والفكر الإنساني.

Adnan Al-Amer , Oki Muraza , عمر خليل شودري

كلية الهندسة-جامعة الملك فهد للبترول والمعادن · السعودية

Surface of the Beta zeolite catalyst (SiO2/Al2O3=150) was modified to improve its hydrophobicity and stability using organo-silane compound. Triphenyl silane was deposited on external surface of catalysts through two techniques i.e. vapor phase deposition and liquid phase deposition. Characterization techniques such as XRD, TPD, N2-adsorption and FT-IR pyridine were used to characterize these catalysts. Silane treated Beta catalysts retained its crystallinity after modification however, decrease in acidity were observed in NH3-TPD studies. These results were confirmed by FT-IR pyridine analysis which showed decrease in both Brønsted and Lewis acid site after modification. Parent Beta and silane treated Beta catalysts were tested in fixed-bed reactor for steam-assisted catalytic cracking of atmospheric residue. Silane treated Beta zeolites exhibited hydrophobic properties; hence the modified Beta catalysts were more stable at high temperature in aqueous environment. It was found that the Beta catalysts modified through both techniques retained their crystallinity and phase purity after reaction. Moreover coke formation was also reduced significantly over silane treated Beta catalysts. This indicates the increase in the stability of catalysts. Furthermore, lighter hydrocarbons yield from 2 h reaction time were higher as compared to reaction time of 4 h. Yield of gases, gasoline (C7-C13) and gas oil (C14-C20) over a vapor phase silane treated Beta zeolite catalyst were 11.6 mol %, 55.7 mol % and 3.7 mol % respectively for 2 h reaction time.