Mohamed Al Mohanned Mohamed Elamin , Oki Muraza, Zuhair Malaibari

كلية الكيميائيات والمواد-جامعة الملك فهد للبترول والمعادن · السعودية

SAPO-34 layers were successfully grown on β-SiC foam with medium specific surfacearea,using a microwave-assisted hydrothermal synthesis method (MAHyS) forapplications as a structured catalyst. Preliminary investigations on SAPO-34 phase puritywere conducted to select the appropriate concentrations and protocol to grow pure SAPO-34 on SiC foams. SAPO-34/SiC foams composite were obtained via a microwaveassistedsynthesis route. X-ray diffraction (XRD) was used to confirm the formation ofthe composite. Microwave irradiation time, number of coating cycles and pretreatmentswith the template solution and the slurry were studied to optimize the growth andcoverage of SAPO-34 crystals on the SiC foam surface. SAPO-34 crystals with cubicmorphologies having 7 μm average size were obtained after 6 h microwave irradiationtreatment at 180oC. However, multi coating steps were required to obtain a full coverageof SAPO-34 crystals. Template pretreatments of the host material (SiC foams)significantly improved the loading of crystals on the support surface. Full coverage ofSAPO-34 on SiC foams was obtained after 2 times of coatings, which is mostly attributedto the template layer formed on the foam surface which induced the heterogeneousnucleation on the support. The SAPO-34/SiC foam structured catalyst exhibited enhancedactivity and stability in methanol dehydration to dimethyl ether, which was carried out in a fixed bed reactor. The supported zeolite displays the same intrinsic activity compared tothe powder zeolite and the dehydration activity obtained on the template coated catalyst,SAPO-34/SiC-T, is higher than the one obtained on the slurry coated catalyst, SAPO-34/SiC-S

Bachir Boudrba, Kheria Ghanim, Zaouia Aissa

كلية العلوم التطبيقية-جامعة ابن خلدون – تيارت · الجزائر

Une analyse de flambement thermique des plaques rectangulaires épaisses fonctionnellement graduées selon la théorie non linéaire de Von Karman est présentée. Les propriétés matérielles de la plaque fonctionnellement graduée sont supposées être variées d’une façon continue à travers l’épaisseur selon une loi de distribution polynomiale de la fraction volumique des constituants. Les formulations des équations d'équilibre et de stabilité sont dérivées on utilisant la théorie de déformation de cisaillement d'ordre élevé basée sur différents types de fonctions de forme. Une méthode analytique pour la détermination de la température critique de flambement sous élévation de température uniforme (U), linéaire (L)et non linéaire (NL) à travers l'épaisseur d'une plaque FG est développée. Le présent travail donne des résultats comparatifs de la température critique de flambement pour différents types de fonctions de forme. L'exactitude de la formulation présentée est vérifiée en comparant aux résultats fournis par la littérature.

Karam Hatem Albarghouthy, هديل حلاوة

جامعة القدس · فلسطين

Background: Diabetes is widely spread in the world, which leads to the occurrence of diabetic foot disease and diabetic foot ulcers (DFUs), which if left untreated may lead to amputate the foot and complications may lead to mortality.Objective:To examine the effectiveness of an integrated therapeutic program of wounds dressing, debridement treatment, and off-loading therapy on the healing process of DFUs.Methods: A retrospective study design was used to review and analyze all available medical files (paper hard copy and electronic forms), for the patients who had been referred to the podiatry clinic in the Palestine National center of Non –Communicable Diseases (NCDs) from October 2014 to December 2019.Results: Data were analyzed using IBM SPSS version 23 software. Data were collected from 192 patients with DFUs, 158 of them had been completed treatment until full healing of the ulcers, About (60.9%) of the patients were male, (98.4%) of them had type II of diabetes, and (82.3 %.) of DFUs were classified as , with a mean (5.1cm2) of the size of the ulcer and (1.5 cm) of ulcers depth. 15.6% of the patients had chronic kidney disease. The mean duration of treatment time was (8.7) weeks. There was a correlation between chronic kidney disease and post ulcer size (p<0.012), and a negative significant correlation between duration of using off-loading and pre ulcer size (p<0.001),and post ulcer size(p<0.001), a positive significant correlation was found between duration of diabetes and pre ulcer size (p<0.001), and the number of sessions (p<0.001).Also, there is a positive significant correlation location of ulcer and type of off-loading device (p<0.001).Apositive significant correlation was found between the level of hemoglobinbA1cwith pre ulcer size (p<0.001), and the number of sessions (p<0.001) Conclusions: There was a significant effect of the integrated dressing, debridement treatment, and off-loading therapy on the healing process of DFUs (p<0.001). Persistence with treatment, comorbidities mainly kidney diseases, and duration of diabetes are factors of importance related to the healing process of DFUs.A strong relationship was found in our study between the variables of using off-loading devices and the rest of the other therapeutic measures, which requires the need for physiotherapy to join the treatment team in Palestine.The results of the study will broad prospects for further studies on DFU disease and its treatment procedures

عبد الحميد معوش, نزيم صرداوي

كلية العلوم الاجتماعية-جامعة الجزائر 2 - أبو القاسم سعد الله · الجزائر

هدفت هذه الدراسة إلى الكشف عن العلاقة بين الضغوط المهنية والرضا الوظيفي ودافعية الإنجاز لدى مفتشي التعليم الابتدائي ببعض ولايات الشرق والوسط الجزائري، مع التعرف إلى المستوى والفروق المعنوية في مقاييس الضغوط المهنية، والرضا الوظيفي، ودافعية الإنجاز؛ تبعا لبعض المتغيرات الديموغرافية والأكاديمية. واستخدم الطالب المنهج الوصفي التحليلي، وبلغت عينة الدراسة (186) مفتشا ومفتشة في (09) ولايات من الشرق والوسط الجزائري للعام الدراسي 2014/2015. تمَّ اختيارها بطريقة طبقية لتلبي غايات وأهداف هذه الدراسة، وهي تمثل نسبة (29,29 %) من مجتمع الدراسة.

عماد زهدي محمد الصوص, هلغى باومغرتن

كلية الدراسات العليا-جامعة بيرزيت · فلسطين

دكار أحمد, قنون أمينة

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

تعرض هذا البحث للبعد المنهجي في النقد الأدبي العربي، فتطرقنا فيه لأهم الوسائل والمقاييس، الخطوات والإجراءات النقدية التي تناولها النقاد قديما وحديثا في مقاربة

H. Moumen, Ismail Adel , Oubira Ameziane

كلية العلوم الدقيقة-جامعة عبد الرحمان ميرة - بجاية · الجزائر

Les protocoles de réplication Byzantine existants satisfont les deux critères standards d'exactitude, la sureté et la vivacité, même en présence de défaillances Byzantines. Les performances de ces protocoles sont le plus généralement évaluées en l'absence de défaillances de processeurs et sont habituellement bonnes dans ce cas. Cependant, les processus défaillants peuvent de manière significative dégrader les performances de quelques protocoles, limitant leur utilite pratique dans les environnements de confrontation. Ce travail démontre l'ampleur de la dégradation de performances possible dans quelques protocoles existants qui satisfont la vivacite et qui donnent de bons résultats en l .absence de défaillances Byzantines. Nous proposons un nouveau protocole de réplication, tolérant aux défaillances Byzantines, qui répond au nouveau critère d'exactitude et évaluons ses performances dans des exécutions sans défaillances et sous attaques

فاطمة جوادي, لخضر العرابي

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

يهدف هذا البحث إلى تسليط الضوء على صورة المتلقي في كتاب "منهاج البلغاء وسراجالأدباء" عند حازم القرطاجني من خلال التطرق إلى صورته في النقد العربي القديم والنقد الحديث،وكذا الوقوف على بعض القضايا النقدية التي تناولها الناقد حول موضوع التلقي كتعريفه للشعروالمحاكاة والتخييل، وٕابداع الشاعر...، ومحاولة ربط تلك الآراء بما قيل في النقد الحديث بغية الكشفعن ملامح المتلقي باعتباره طرفا مهمّا في حدوث العملية التواصلية.

Khalida Benahous, Hadjer Roumaissa Belkisseria , Madani Habib

كلية اللغات والاداب-جامعة ابن خلدون – تيارت · الجزائر

This research attempt to investigate the effectiveness of task-based language learning approach on the development of grammar proficiency on EFL learners in which teachers’ implementation of task-based approach could face several issues,materials, students’ level, classroom size are three faces that face teachers during the implementation and that make a serious obstacle for them also this research tried to reveal how teachers can implement task-based approach effectively in which they meet their learners needs with different learning styles .To answer our research questions and the requirement of our investigation press us for both qualitative and quantitative analyses, consequently a structured interview and a questionnaire are conducted as a data collection tool which was directed to different participants from Tiaret city ,Algeria ,the selection of the participants targeted some different ,teachers and learners with different age and social backgrounds , the data collected was analysed as it is believed that with the issues that face teachers in the classrooms while using task-based approach it seek that there is a development of learners in theirgrammar level.

جلال البناي, مريم غالب

كلية الطب والصيدلة -جامعة سيدي محمد بن عبدالله - فاس · المغرب