Gurashi Abdalla Gasmelseed, Osama Abdelhameed Abdalla, Osman Tageldin Osman

كلية الهندسة-جامعة الخرطوم · السودان

A study of primary and secondary treated liquid petroleum wastes in apilot sieve tray column has been undertaken. The literature related to thistype of extractor and the relevant phenomena of droplet break-up andcoalescence, drop size and drop mass transfer have been reviewed.The method of treatment in local refineries has been investigated andit is observed that the primary and secondary processes are quite efficient,but the tertiary process leaves some of the oil in he effluent and this is whythe treated water is not recycled and reused. The treated waste/oil water ispumped into ponds for evaporation leaving the oil and other less volatilecomponents as a residue which have a negative impact on the environment.The system of oil in water is not a normal solute-solvent system, andto make it so the mixture has been emulsified with a surfactant producing apartially water miscible emulsion. Experiments were carried out with nonmasstransfer to determine the operating column hydrodynamics such asflooding. At 85% of flooding, mass transfer experiments were performedand the effects of drop size, drop size distribution and dispersed phaseholdup volume at variable agitation speeds on the column performancehave been investigated.The concentration profile has been measured and the overallexperimental mass transfer coefficients were calculated from the meandriving force using Simpson's rule. It is observed that drop size, drop sizedistribution and mass transfer coefficients were strongly dependent on thespeed of agitation. As the oil droplets were composed of emulsified oil inwater and the oil itself is completely immiscible in water, the direction ofmass transfer was from the emulsified droplets to the dispersed phase. Thiscondition coupled with high solubility of oil in n-hexane made theextraction process very efficient and an almost oil-free water could beobtained and recycled.

أحمد علي كاظم الصالحي, صباح مالك حبيب الشطى, قتيبة جاسم غني الخفاجي

كلية الزراعة-جامعة البصرة · العراق

بوزيدي عبد الناصر, ديدوح عمر

كلية الآداب واللغات-جامعة أبو بكر بلقايد - تلمسان · الجزائر

إن مادة اللغة العربية في منهاج التربية التحضيرية التي تشمل علي الأنشطة التالية: القراءة، التعبير و الكتابة هي المنطلق الأساسي نحو كل النشاطات الأخرى و لذا كان من البديهي إصلاح المنهاج بدءا من هذه الأنشطة حسب الوسط الإجتماعي دون التخلي عن البعد الإ الإنساني مع التوازي و مراعاة النمو العقلي، المعرفي الوجداني، الإجتماعي الحس، حركي للطفل

نعيمة بن قريش, كمال حدوم

كلية الحقوق والعلوم السياسية-جامعة أمحمد بوقرة - بومرداس · الجزائر

يوسف الغلاييني, يوسف عبدالله السعدي

كلية محمد بن راشد للإدارة الحكومية · الامارات

N. Houat Saidi , S. Douichene, حميدة كايم, نبيلة كبيلي

كلية علوم الطبيعة والحياة-جامعة عبد الحميد بن باديس مستغانم · الجزائر

Mohamed Hamza Merabet, Randa Adnane

كلية الأداب واللغات-جامعة العربي بن مهيدي - أم البواقي · الجزائر

The present study aims at investigating students' attitudes towards translation as a teaching technique of the English language and vocabulary. The basic hypothesis set out is that translation is an effective technique, in helping learners acquire vocabulary in specific and the English language in general. The method of this research study is descriptive, which seeks to describe two variables: the translation technique as the independent variable and the English language and vocabulary learning as the dependant variable. The data was collected through questionnaires designed to 2nd year LMD students of the English department of Larbi Ben M'hidi University of Oum El Bouaghi. The results have shown that translation can be an effective teaching technique of English and vocabulary in some learning areas, whereas, it is ineffectual in some others. Therefore, it is the role of the teacher to recognize in which areashis/her students need to use translation.

إكرام صحراوي, عبدالقادر شعشوع, فايزة طيب

كلية العلوم الإنسانية والاجتماعية-جامعة ابن خلدون – تيارت · الجزائر

هدفت الدراسة الحالية إلى معرفة مستوى الطموح الدراسي لدى طلبة السنة الثانية ليسانس تخصص علوم اجتماعية بجامعة تيارت، واعتمدت هذه الدراسة على المنهج الوصفي لأنه يناسب طبيعة الدراسة. طبقت الدراسة على 64 طالب وطالبة من جامعة ابن خلدون بولاية تيارت، وقد استخدمت الدراسة مقياس مستوى الطموح من إعداد معوض عبد العظيم. وللتحقق من فرضيات الدراسة تم تطبيق اختبار Ttest للمجموعة الواحدة واختبار Ttest لعينتين مستقلتين، ومعامل (أنوفا)، كانت نتائج الدراسة كما يلي: مستوى الطموح لدى طلبة السنة الثانية تخصص علوم اجتماعية منخفض. لا توجد فروق دالة إحصائيا في مستوى الطموح لدى طلبة جامعة تيارت تعزى لمتغير التخصص. لا توجد فروق دالة إحصائيا مستوى الطموح لدى طلبة جامعة تيارت تعزى لمتغير الجنس.

Soufyane Bounab, Said Gadri

كلية الرياضيات والاعلام الآلي-جامعة محمد بوضياف - المسيلة · الجزائر

Ce projet vise à créer et mettre à la disposition des biologistes un nouvel outil de diagnostic de leishmaniose cutanée rapide, plus performant et plus précis basé sur les derniers techniques de l’intelligence artificielle et vision par ordinateur, nous avons utilisé un modèle d’apprentissage profond (YOLO) pour la détection des corps des parasite leishmania dans les images microscopiques,on a entrainer le model sur des images microscopique collecté a l'institut pasteur d’Algérie annexe de M'sila . et nous avon obtenu une précision de 94% sur l'ensemble du test. (This project aims to create and make available to biologists a new rapid, more efficient and more precise cutaneous leishmaniasis diagnosis tool based on the latest techniques of artificial intelligence and computer vision, we used a learning model deep (YOLO) for the detection of leishmania parasite bodies in microscopic images, we trained the model on microscopic images collected at the Pasteur Institute of Algeria annex of M'sila. and we obtained an accuracy of 94% over the entire test)

Rim El-Khoury, Zeina Jamil Dimachkie

كلية إدارة الأعمال والاقتصاد-جامعة سيدة اللويزة · لبنان

The purpose of this project is based on different subjects. First, it investigates students' behavior towards the use of interactive whiteboard in the classroom. Second, it focuses on the impact of interactive whiteboard on students' grade. The main objective is to improve the teaching-learning process in the College of Notre Dame de Louaize School with the use of technology, specifically the IWB.Design/Methodology/Approach: Both IWB and regular whiteboard were used based on an ABAB design. A questionnaire was completed by 150 students whose age range between 1 1 and 13 years old. The questions focused on the satisfaction, interaction, usage, perception, motivation, and attitude of students towards the IWB. Answers of the questionnaire were inserted in SPSS. Two tests were applied to evaluate the improvement in grades for students based in IWB. One test was performed when lessons were given with the IWB and the second test without the presence of an IWB during explanation. To be able to answer all the research questions related to the IWB, Wilcoxon signed-rank test, Pearson's Chi Square test, paired sample t-test, and a regression analysis were performed.Findings: Findings obtained suggest that the interactive whiteboard has a positive influence on student's behavior, satisfaction, perception of learning, motivation and interaction. In addition, students' grades highly improved after the use of IWB suggesting its beneficial effect on students.Research Limitations: The study was conducted only on one group of students (11-13years old) as well as one school; therefore results may not be generalized for all schools and all students in Lebanon.Practical Implications: By demonstrating the usefulness of IWB and its positive effect on students, this paper advocates the use of technology in school. This research attempts to enlighten school principals and teachers about the importance of having an IWB in each classroom and encourage them to teach their lessons using this technological tool.