Issam Lakkis, Ali Mohammad Saleh

كلية سليمان العليان لإدارة الأعمال -الجامعة الأمريكية في بيروت-الجامعة الأمريكية في بيروت · لبنان

The study of pollutant dispersion in urban areas is complex due to its dependency on theatmospheric boundary layer (ABL) flow and the near buildings perturbed flow. Computational fluid dynamics (CFD) models with the RANS turbulent closure schemesare a good compromise between accuracy and computational cost when solving suchproblems. In this study, we created a tool for solving wind flow in urban areas using theprognostic approach that is based on CDF models, and the diagnostic approach that isbased on imposing mass continuity by solving an optimization equation. However, theuse of standard RANS closure schemes with standard sand-grain rough wall function inthe prognostic model show inconsistency with inlet conditions. To solve this issue, weimplemented a new formulation of the Richards and Hoxey wall function and amodification of the k-ε model, and we derived a modification for the k-ω model. Weimplemented two methods for calculating the concentration field. The first one is underthe Eulerian framework by solving the concentration transport equation and the secondone under the Lagrangian framework by using the particle method with core radiusspreading for diffusion. We tested the flow and dispersion models by simulating thewind field in an empty domain using different variations with k-ε and k-ω models.Then, by simulating the flow and particles dispersion around a building using themodified k-ε and k-ω models with the new wall function formulation and using the k-ωSST by resolving the viscous sublayer. Moreover, we simulated the flow field using themodified k-ε model for a domain containing an array of buildings.

عبدالنور زوامبية, محمد مليك

كلية الحقوق والعلوم السياسية-جامعة زيان عاشور - الجلفة · الجزائر

تضطلع الدولة عبر مؤسساتها وموظفيها الذين يشتغلون بالمرافق العامة بمجموعة من المهام التي تخص الحياة اليومية للمواطنين وتسعى إلى تلبية حاجات الأفراد المنتفعين من المرفق العام وبالجودة المرغوب فيها. لذلك وجب على القائمين بشؤون المؤسسات العمومية الاهتمام بالعنصر البشري الموضوع تحت سلطتهم وهذا من أجل دفعه وتحفيزه على أداء واجباته اتجاه المرتفقين على أكمل وجه.تعتبر عملية تقييم الأفراد عملية جوهرية في إدارة الموارد البشرية داخل المنظمة لما توفره من معلومات آنية حول الوضعية الحقيقية للعنصر البشري من حيث التعداد والتأهيل والتوزيع، فنجاح أي منظمة في بناء نظام متكامل لتقييم موظفيها سيسمح لها بتحقيق أهدافها بالجودة المطلوبة.هذه الجودة التي تصبو إليها جميع المنظمات الخدمية أثناء تأديتها لمهامها تمثل أساس المرافق العمومية في الإدارات الحديثة والتي تعتبر تحديا كبيرا يبين معالم قدرة المؤسسة على مواكبة متطلبات المواطنين وتحقيقها بالسرعة والنوعية المرجوة. ولكن عملية تكييف معايير ومقاييس الجودة تشكل رهانا تسعى جميع الإدارات العمومية إلى تحقيقه وهذا عن طريق اختيار العصرنة كوسيلة لتحسين المرفق العام، والتي ترتكز على استعمال التكنولوجيات الحديثة للإعلام والاتصال من أجل بناء إدارة إلكترونية فعالة تستجيب لتطلعات واهتمامات المواطنين وتلبي رغباتهم بالكيفية والسرعة المطلوبة.

Khaled Sadaoui , Ouarda Ardjoune

كلية العلوم الاقتصادية والتجارية والإدارة-جامعة عبد الرحمان ميرة - بجاية · الجزائر

Dans cette présente étude, nous essayons de mesurer et de noter le risque-pays grâce à des données collectées depuis 1977 à 2007, tout en supposant que le risque financier est la seule composante qui reflète le plus le niveau du risque-pays.Notre démarche a pour but d’attribuer une note chaque année à chaque indicateur de risque financier comprenant : la dette externe, le service de la dette, le solde courant, les liquidités internationales et la stabilité de taux de change et de faire la modélisation pour l’ensemble de ces indicateurs afin de sortir des notes de synthèse relatives au risque financier.Pour ce faire, notre travail s’articule autour de deux parties : La première partie est consacrée à la présentation du cadre théorique de risque-pays, en passant par les travaux réalisés dans ce domaine, elle est composée de deux chapitres : le premier expose les caractéristiques principales du risque-pays y compris ces approches de définition, ces typologies et sonévolution dans le contexte de la mondialisation. Le deuxième évoquera la notation de risque-pays faite par les différents acteurs de notations. Dans la seconde partie, nous procéderons à l’évaluation du risque financier dans le cas de l’Algérie,en utilisant la méthode de l’ICRG5 dans le premier chapitre. Et enfin, à travers le dernier chapitre, nous essaierons de ressortir et de déterminer les indicateurs qui sont plus contributifs à l’explication de risque financier suite aux résultats obtenus dans la modélisation et la notation. nous essaierons de ressortir et de déterminer les indicateurs qui sont plus contributifs à l'explication de risque financier suite aux résultats obtenus dans la modalisation et la notation

Abdel Rahman, Saadeddine Chihi , فريمر قلية

كلية العلوم والتكنولوجيا-جامعة الشهيد حمة لخضر - الوادي · الجزائر

"Notre travail porte sur l'étude du comportement de l'huile de transformateur, sous tension alternative à une fréquence industrielle de 50 Hz, dans un système d'électrodes sphère à sphère à distance constante.L'huile usagée appelée Borak 22 a été étudiée sous de nombreux facteurs tels que la tension appliquée, la tension équivalente dans l'isolation de l'air et la valeur du courant de fuite.Les résultats des tests sont vérifiés pour les changements de tension de claquage et de courant électrique. Une condition caractérisant la détérioration de l'huile après chaque panne est également indiquée.

Mohammed Jebereldar, رانيا حسن أبو زيد محمود

كلية الدراسات العليا والبحث العلمي-جامعة شندي · السودان

The aim of this research is to assess the knowledge of Patient with coronary artery disease about causes ,associated risk factors and prevention measure because the number of patient with CAD had increase recently in the Sudan for all aged group ,while coronary artery disease is still the number one killer of people in the united states and has epidemic spread all over the word for both developed and developing country ,there for it is important to evaluate the knowledge of patient with coronary artery disease about causes ,associated risk factors and prevention measure through changes I n their life style and behaviors that may improve and reduce complication .therefore this descriptive cross sectional hospital base study was conducted among convenience sample of 35 patient with CAD (20 male,15 female) and data was collected by asking them using close ended questionnaire in duration of eight week to assess their knowledge about causes ,associated risk factors and prevention measure in CCU of Omdurman military hospital ,then data were analyzed for result by using SPSS software program .the result revealed that more than half were male that account 57.1% ,and their age above 50 years old, more than half 54.3% their education was secondary level.The result show that The knowledge about the primary cause of coronary artery disease is poor only 32% of study population were know that atherosclerosis is the primary cause for coronary artery disease . All participants were assessed their knowledge and awareness about risk factors such as(smoking, blood pressure ,hypertension, diabetes, obesity)and prevention methods such as diet, physical exercise ,control blood pressure and diabetic mellitus and reducing weight. Result was revealed that only less than half (40%) had a good knowledge about risk factors for CAD.The result revealed that The common risk factors between the study populations is HTN common for one select, family history and smoking for two selects (options). Hyperlipidemia & Increasing weight & DM for three select. The knowledge about the prevention of coronary artery disease is good Majority of study population 92.9% was knowledgeable about the prevention methods.This study concluded that that study population had a fair knowledge about the awareness of coronary artery disease development, risk factors, complication, prevention methods and they had poor knowledge regarding the primary causes, so the study recommended comprehensive education about causes &risk factors. therefore the study recommended that Establish of health educational program to increase the awareness about coronary artery disease especially in the community of health persons to minimize the risk for developing coronary artery disease education about life style changes Increase control on all modifiable risk factors for those whom at risk for developing coronary artery disease.

Fahad Al Maskari, Aishah Alhmoudi, Jamal Sheikh-Ahmad

جامعة خليفة · الامارات

أمين صالح أبكر محمد, محمد صلاح الدين أحمد فتح الله

كلية اللغات-جامعة المدينة العالمية · ماليزيا

تتحدث الرسالة عن التوجيه اللغوي والنحوي في مؤلفات الشيخ محمد بن صالح العثيمين وأثره في استنباط الأحكام الشرعية

Albadawi Abdelbagi Talha , Enas Awad Alameen Awadalah, Sanaa Elfatih Husieen

كلية علوم المختبرات الطبية-جامعة الجزيرة · السودان

Renal failure is a situation in which kidney fails to function adequately. There are two forms of renal failure: acute and chronic. End-Stage renal disease is the final stage of chronic renal failure where there is a progressive, irreversible deterioration in renal function which can be substituted by haemodialysis (HD),peritoneal dialysis, or transplantation. .This cross sectional study was conducted in, Omer Alhag Saeed Center for Renal disease and Surgery Gezira State rufaa . To evaluate the effect of heamodialysis in complete blood count with focus on hemoglobin, haematocrit, red cell indices and platelets pre and post haemodialysis for patients of end stage renal disease. 40 patients were enrolled in this study, consisting of, 27 males represent (61%) and 23 females represent (39%). The mean age of male and female HD patients were 40±15 years and 35±12 years respectively, resulting in an overall mean age of 51 years for the population examined. 3 ml of blood were collected pre and post dialysis, in to tri-potassium Ethylene diamine tetra-acetic acid(K3 EDTA) anticoagulant containers about 10-15 minutes after the haemodialysis hemoglobin hematocrit, red cell indices was measured by using an automated blood cell counter( Sysmex KX 21N ).Data collected was analyzed by using Statistical packages for Social Science(SPSS). The result was statistically Significant difference in hemoglobin pre(10.2± 1.6) and post(10.9± 1.9),( P 0.000), hematocrit pre (32.4±5.1)and post(34.7±5.9)(P.value 0.00) , red cell indices MCV pre(90.7±6.0) and post(90.7±6.1), MCH pre (28.6 ± 2.6) post (28.6 ± 2.6) , MCHC pre (31.5 ± 1.2) post (31.4 ± 1.2) p.value (0.00) , platelet pre (205.9 ± 90.7) post (202.6 ± 84.8) p.value (0.00) .The results of the present study conclude that the most of the hematological parameters measured in HD patients, post-HD were significantly increased.

أمين أحمد مصطفى عواد, ابراهيم محمد عوض

كلية الدراسات العليا-جامعة القدس · فلسطين

عمر ابراهيم, مريم عمارة

كلية الدراسات العليا-جامعة السودان للعلوم والتكنولوجيا · السودان

This experiment was carried out in January – February 2017 at Dal Dairy Factory (CAPO) - Bahri - Sudan. The main objective of present study is evaluation impact of Hazard Analysis and Critical Control Point (HACCP) application on safety and quality of plain stirred yoghurt. The samples were collected and analyzed within the factory during the yoghurt manufacturing period, starting with raw milk and passing through the manufacturing process until the finished product. Five samples of raw milk and 15 samples of yogurt were collected in duplicate at four different stages during manufacturing for the physiochemical and microbiological analysis. These stages include: raw milk, pasteurization, during fermentation process and final product stage. The results of the sensory evaluation (color, flavor, texture) of raw milk showed its quality and its capability for consumption and processing and all the results were within normal limits. The results of the physiochemical and microbiological analysis of raw milk showed that the product is safe and good for manufacturing by comparing all the results with their limits and requirements required in the Sudanese standard metrology for raw milk and yoghurt. In the final product, the results of the physiochemical and microbiological analysis were as follows: (viscosity 21.9, pH 4.3, temperature 24oC, fungi and yeasts 6) as averages for every 10 samples. The results showed that the yogurt was free from the coliforms (E. coli spp, Kelbsella spp, Citrobacter spp, Enterobacter spp).The results of the physiochemical and microbiological analysis of the final product confirmed the product's safety from any contaminants and physical, chemical and microbial hazards. Application of HACCP system and GMP, GHP at Dal dairy plant (CAPO) has a good effect on the safety and quality of yoghurt (100%).