صباح عثمان عبدالله البياتي, عبدالله أحمد عبدالله أحمد العبيدي

كلية التربية -جامعة تكريت-جامعة تكريت · العراق

Bachir Hachelfi, Halima Laouassa

كلية الآداب واللغات-جامعة 8 ماي 1945 قالمة · الجزائر

En tenant compte de la nécessité de développer la compétence de production écrite en classe de FLE, nous avons proposé de mettre à la disposition des élèves un outil médiateur qui peut faciliter la mémorisation des nouveaux mots et la contextualisation des connaissances afin d’améliorer la compétence scripturale, c’est la vidéo. Cet outil attractif a pour rôle d'organiser la rencontre de l'élève et la langue étrangère en rendant l'apprentissage motivant. Ou elle est considérée comme un moyen d'apprentissage très efficace. Dans cette recherche nous allons essayer de voir l'effet de l'utilisation de la vidéo sur la production écrite. Nous allons voir si cet outil permet de développer certaines compétences chez les élèves ou pas. Alors, pour le besoin de notre recherche et pour mesurer l'impact de l'utilisation de cette activité par l'enseignant et sur l'élève, nous avons opté pour l'élaboration d'un questionnaire et d'une expérimentation: un questionnaire, destiné aux enseignants de français langue étrangère au cycle moyen, et un exercice de production écrite élaboré pour les élèves de la 1ère année moyenne, sans vidéo et un autre en s’aidant d’une vidéo.

امال بوخريص, رشيدة داده, عائشة صالحي

كلية الآداب واللغات-جامعة أحمد دراية - أدرار · الجزائر

فايز العلوني, مصطفي إبراهيم, ميس امطانيوس طعمه

كلية الطب البشري-جامعة تشرين · سوريا

Karima Aoues , Bouchra Sidi Moussa

كلية علوم الطبيعة والحياة-جامعة سعد دحلب - البليدة · الجزائر

La mise en place d’un Plan de Maîtrise Sanitaire (PMS) basé sur des bonnes pratiques d’hygiène et de fabrication et la méthode HACCP, est une obligation réglementaire imposée aux industries du secteur agroalimentaire (IAA) par la réglementation international, communautaire, et national qui est une transposition des prescriptions du Codex Alimentarius. La mise en place de la démarche qualité au sein de l’unité d’huilerie MRABTINE BOUMEDFAA, BLIDA, se résume en deux étapes. Première étape : la mise en place des BPH, à titre de pré requis de la méthode HACCP (les PRP) ;. Seconde étape : l’application de la méthode HACCP. L’étude a identifié l’existence des programmes préalables opérationnels et des points critiques. Ces constats sont suivis par la mise à niveau des mesures de maitrise, des méthodes de surveillance et des actions correctives. En résumer, l’application de la méthode HACCP en huilerie se révèle bénéfique à moyen terme, point positif à mettre en valeur, pour aider les établissements à surmonter les difficultés et contraintes immédiates à sa mise en place.

Anthony Tony Bejjani, Noel Ghanem’s

كلية العلوم والأداب-الجامعة الأمريكية في بيروت · لبنان

Adult neurogenesis (AN) is a restricted and highly coordinated process that produces adult-born neurons from a preserved pool of adult neural stem cells (aNSCs). These cells are located in the adult subventricular zone (aSVZ) lining the lateral ventricles and the subgranular zone (SGZ) of the dentate gyrus inside the hippocampus. Cell-cycle proteins were shown to be critically involved in brain development, particularly the regulation of embryonic neurogenesis. One such family is the Retinoblastoma (Rb) family of pocket proteins that is comprised of Rb, p107 and p130. We have recently shown that Rb specifically controls neural progenitor cells’ (NPCs) proliferation in the aSVZ without affecting stem cell fate, and is needed for long-term survival of newborn neurons inside the OB and the dentate gyrus. In contrast, p107 was previously shown to negatively regulate adult NSCs self-renewal and promote progenitor commitment to a neuronal fate. Moreover, p130 is required to maintain a post-mitotic state and survival in mature cortical neurons in culture; however, its role in the adult brain is still unknown. Hence, pocket proteins clearly play distinct functions during neurogenesis; yet, they could also carry redundant functions manifested by compensatory mechanisms that are not revealed by studies in single knock-out (KO) models. Here, we show indeed that, compared with single-KOs, loss of all three pocket proteins (triple KO) in aNSPCs leads to additive effects with respect to enhanced stem cell self-renewal and progenitor proliferation but also to unique consequences associated with ectopic neuroblast migration as well as severe and pre-mature loss of immature neurons inside the aSVZ and RMS, prior to reaching the OB. Analysis of double KO mice, confirmed the distinct roles played by p107 and Rb in the control of stem cell self-renewal and progenitor proliferation, respectively. Moreover, it highlighted the central role played by Rb in neuronal survival given that one functional Rb allele is able to rescue th

رفيقة عيساني, مراد بدران

كلية الحقوق والعلوم السياسية-جامعة أبو بكر بلقايد - تلمسان · الجزائر

إن المستشفى العمومي هو الجهاز الوحيد الذي بواسطته تقوم الدولة بتقديم الخدمات الصحية لأفراد المجتمع فهو يعتبر العمود الفقري لأي نظام صحي وذلك لقدرته على توفير كافة أنواع الرعاية الصحية . غير أن هذا المستشفى بإعتباره شخصا معنويا ليس بمقدروه أن يؤدي الغرض الذي أنشئ من أجله إلا من خلال الشخص الطبيعي . وتبعا للدور الحساس الذي يلعبه الطبيب في المستشفى العمومي لم يأت المشرع إلا أن يحيط فئة الأطباء ببعض الإلتزامات التي يجب عليهم إحترامها . وفي مقابل ذلك يترتب عليها قيام مسؤولياتهم في حالة مخالفة هذه الإلتزامات

صورية بولعبيزة, أمال خالد , نبيل بومصران

معهد الآداب واللغات-المركز الجامعي عبد الحفيظ بو الصوف · الجزائر

جابر شنشول, لبنى عبد الكريم نعيم الغازي

كلية الهندسة-جامعة النهرين · العراق

The experimental work was devoted to study the drag –reduction (DR) properties of various additive types, both in the single and binary mixed forms. Two polymer types, of high molecular weights 4 and 7 millions were used in the present investigation,namely, polyethylene oxide PEO as flexible synthetic polymer andAmylopectin as rigid polysaccharide from natural resources.Moreover, a certain type of natural Clay (Kaoline) and Aluminumsulfate (Alum) are included as suspended particles or in the colloidform. Sodium lauryl ether sulfate (SLES) as anionic surfactant wasalso used as additive. The drag reduction properties of the different additives were conducted in a closed loop circulation of turbulentwater  flow.The flexible polymer, PEO at concentrations range from20 to 100 ppm, was significantly high efficient drag reducing agent inturbulent water flow at 66810 Reynolds number. Otherwise, the timedependence DR showed that PEO undergo undesirable shear degradation under turbulent flow. Low concentrations enhance thedegradation rate. Alum could be considered as a good drag reducer agent. Otherwise Clay showed relatively low drag reduction ability.The drag reduction effectiveness of Clay as well as Alum additives isapparentable unchanged by shear re – circulation turbulent flow, up to 15 hours considered time. These may be to the stability of rod – likemicelles in the suspended or colloid forms respectively. Both SLESsurfactant and Amylopectin rigid polymer showed moderate dragreduction effectiveness in turbulent water flow about 13.5% at  200ppm concentration and 6.0 m3 /h flow ate.Moreover, Amylopectin was likely shear degradable, almost the same type of behavior wasobserved for Amylopectin as in the case of PEO. The time dependence drag reduction with SLES additive explained an extraordinarybehavior. The SLES surfactant with rod – like micelles remainrelatively stable for certain time of turbulent recirculation according to the SLES concentration, after that the %DR decreases until minimumvalues were reached. Furthermore, micelles could be reformed during the stopping period leading to maximum drag reduction to be occurred.A slight increase of drag reduction was observed by mixing Clay,Alum or Amylopectin with  polyethylene oxide as Co – additives.While SLES – PEO admixture enhanced the DR performance. All ofthe considered Co  – additives declined the susceptibility todegradation with shearing time  recirculation flow. Increasing the concentration of Co – additive leaded to reduce the rate of degradation ability of admixture as drag reducer agent. SLES and Amylopectin Co– additive were slightly more efficient to decline the degradationability.The time dependence degradation behavior of the three solutions containing PEO + Clay, PEO + Alum and PEO +Amylopectin in turbulent flow was analyzed by modifying thefractional exponential decay equation DR(t)/DR(0) = exp [-(t/λ].The modified equation was found to fit the experimental data of the f)1-nf three solutions better than the original equation.

Noura Bousbia, Sahnoun Attou

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