بن احمد عبدالكريم, بن عربية مجدد, بناتي عماد, كاكي محمد

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

هدفت هذه الدراسة الى موضوع الزراعة وأهم المنتجات الزراعية و الحيوانية في بلاد المغرب خلال الفترة الرومانية وبعدها حيث تناولنا نشأة الزراعة في بلاد المغرب وتطورها وانتقلنا الى بداية الزراعة في بلاد المغرب خلال الفترة الرومانية وأهمالمحاصيل الزراعية و الثروة الحيوانية وحتى مختلف الأنظمة و الضافات التي جاء بها الرومان الى المنطقة و اختتمنا بحثنا بالتطرق الى الزراعة في بلاد المغرب بعد الفترة الرومانية

اسية دواج, سميرة بداوي, وردة بكوش

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

هدفت هذه الدراسة إلى محاولة معرفة دور استراتيجية التمكين في تحقيق التغيير التنظيمي في مؤسسة الموارد المائية لولاية تيارت ،ولتحقيق هذه الغاية قمنا بتقسيم للدراسة.جانب ميداني : حاولنا من خلاله إتباع استراتيجية منيجية متكاممة شخوت لنا الواقع الفعمي لمتغيرات بيرسون وذلك لكشف العلاقة بين أبعاد الدراسة ،ولقد تم تحميل وتفسيرنتائج الدراسة في ضوء الفرضيات والدراسات السابقة وفي الأخير تم التطرق إلى بعض التوصيات.

اياد احمد حسن شماسنه, زياد قنام

المعهد العالي للتنمية المستدامة-جامعة القدس · فلسطين

Ayman Mohammad Hijazi, Joseph Zeaiter

كلية مارون سمعان للهندسة والعمارة-الجامعة الأمريكية في بيروت · لبنان

The waste crisis striking most countries has made it crucial to consider treatment methods that would leave minimal impact on the environment. Statistics show that rubber tires contribute to a significant portion of waste on local and global scales. Different techniques have been developed to cope with waste tires, one of which is pyrolysis. This work aims at enhancing two types of pyrolysis, namely thermal pyrolysis and solar pyrolysis, by using different catalysts. Thermal pyrolysis temperature is fixed at 590 ̊C, whereas solar pyrolysis is conducted at an irradiation between 900-1100 W-m2. Nine catalysts are synthesized based on the acidic Hbeta zeolite structure, Hbeta, Pd-Hbeta, Pt-Hbeta, Pd-Pt-Hbeta and on the semi-conductor TiO2 photo active catalyst, TiO2, Pd-TiO2, Pt-TiO2, Pd-Pt-TiO2, and Bi2O3-SiO2-TiO2. Thermal pyrolysis results highlighted the enhancement effect of palladium noble metal that gave the highest pyrolytic gas yield of 37.02percent, while Hbeta zeolite gave 27.89percent only. On the other hand, solar pyrolysis with photocatalytic Pd-TiO2 produced the highest gas yield of 40.94percent. The pyrolysis oil samples were collected and characterized using GC-MS to determine the carbon chain length which is found to decrease to C9-C12 gasoline range under Pd-Hbeta and Pd-TiO2. Meanwhile, catalyst behavior and activity were investigated using several techniques including; BET isotherm, SEM, EDX, and XRD. The highest surface area for Hbeta zeolite based catalysts was 449 m²-g for Pd-Hbeta zeolite. While the semi-conductor TiO2 based catalyst, Pd-Pt-TiO2 gave a surface area of 130.9 m²-g. Palladium metal produced the highest dispersion on the support surface and inside the pores. The bimetallic Hbeta zeolite catalyst and the tri-metallic Bi2O3-SiO2-TiO2 catalyst had a layered structure as detected by SEM. Palladium noble metal doping showed a significant enhancement for both Hbeta acidic surface and photo active semi-conductor TiO2. Pd- Hbeta zeolite provoked the dehydrogenation-hydrogenati

Nadir Tighidet, Naima Ayad, Toufik Maouche

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

Le système fiscal algérien est un système essentiellement déclaratif. En contrepartie de ce système, la législation a autorisé un contrôle régulier pour l'administration fiscale, ayant pour finalité la lutte contre les manœuvres frauduleuses.Le contrôle fiscal se manifeste sous différentes formes telles que la vérification de la comptabilité, la vérification approfondie de la situation d'ensemble, la vérification ponctuelle, le contrôle sur pièce.Pour permettre aux opérations de contrôle de se dérouler dans les meilleures conditions, la législation a attribué au vérificateur différents pouvoirs facilitant l'accomplissement de son travail, ainsi que les obligations que le contribuable est contraint d'accomplir.C'est à ce niveau que se situe l'intérêt de notre présent travail, qui tend à porter un regard sur les pratiques de la vérification de la comptabilité. Cette tâche est sujette à une rigueur dictée par des règles propres à l'exercice du métier de contrôle fiscal.

Elkamel Merah, Allaoua Chaoui

كلية العلوم الهندسية-جامعة الاخوة منتورى - قسنطينة 1 · الجزائر

Aida Nasser Said Al-Tubiyah , Elshafie Ibrahim Elshafie, Haytham Alieldin Ali, Waleed Al-Marzooq

كلية العلوم الزراعية والبحرية-جامعة السلطان قابوس · عمان

Bluetongue (BTV) and Schmallenberg viruses (SBV) are non-contagious, non-zoonotic, and vector-borne diseases. Both viruses infect domestic and wild ruminants and camelid species and are transmitted mainly via Culicoides spp. Bluetongue virus belongs to the genus Orbivirus, family Reoviridae, whereas Schmallenberg virus belongs to the genus Orthobunyavirus, family Bunyaviridae. In Oman, only two studies were conducted in 1991, which investigated the seroprevalence and detected different serotypes of BTV. There is no available data about SBV seroprevalence in Oman. This study aims to investigate the seroprevalence and associated potential risk factors of BTV, SBV, and cross-infection in sheep, goats, and cattle in Al-Batinah Governorates, Sultanate of Oman, using ELISA. A total of 529 serum samples were randomly collected from 207 sheep, 265 goats, and 57 cattle from five wilayats of Al-Batinah North and Al-Batinah South. The serum samples were screened for the presence of BTV-specific antibodies against the BTV VP7 protein using ID Screen® Bluetongue Competition enzyme-linked immunosorbent assay (cELISA), and screened for the presence of SBV-specific antibodies against the recombinant SBV nucleoprotein antigen using ID Screen® Schmallenberg virus Indirect Multi-species screening test (iELISA). The overall seroprevalence of BTV, SBV, and cross-infection were 69.8% (369/529), 44.8% (237/529), and 36.9% (195/529), respectively. In cattle, the prevalence of BTV and SBV antibodies was comparatively higher (94.7% and 82.5%) than in goats (83.0% and 43.0%) and sheep (45.9% and 36.7%), respectively. The highest BTV seroprevalence was recorded in Nakhal (85.5%), followed by Wadi Al-Maawil (81.0%), and the lowest in Barka (59.6%). However, the highest seroprevalence of SBV was observed in Wadi Al-Maawil (50.0%), followed by Barka (48.7%), and the lowest in Sohar (34.2%). Overall, the seroprevalence of BTV and SBV in domesticated ruminants was higher in adult than in young animals. Females showed a higher seroprevalence of BTV and SBV compared to males. This study provides an update on the epidemiological status of BTV and, to our knowledge, this is the first study on the seroprevalence of SBV in Oman. Future studies are required for the isolation and identification of BTV and SBV along with other potential biological vectors in Oman.

بلكو جمال, سايح عمار , سعيداني محمد السعيد

كلية العلوم الاقتصادية والتجارية وعلوم التسيير-جامعة غرداية · الجزائر

خالد عنيبة, ياسين حميين

كلية الطب والصيدلة - مراكش-جامعة القاضي عياض · المغرب

A Salam Gerais, Gamal A Elgani Ahmed Gerais

كلية الطب-جامعة الخرطوم · السودان

This is a prospective, descriptive study conducted amongtwo different groups of patients in two different countries.The first group was carried at AKMICH in K.S.A during theperiod between June 1999 to July 2003. The second group was atthree big hospitals in Khartoum State (SUH, KTH, OMH) in theperiod between January 2005 to August 2005.The aim of the study was to assess the risk factors of PP,maternal complications and neonatal outcome and to perform acomparison between the two groups of the study.In the first group of the study the incidence of PP and PAwere 5 in 1000 and 0.5 in 1000 pregnancies respectively, while inthe second group the incidence were 2.8 per 1000 pregnanciesand 0.3 per 1000.An association between PP and high parity was found inboth studied (P = 0.006 in the first group and P = 0.000 in thesecond group). Also the incidence of PP was directly proportionalto the maternal age in the first and second groups (P = 0.001, andP = 0.004 respectively).Previous C/S was found to be a risk factor for PP in thesecond group (P = 0.038), while high percentage of the first grouphad previous one or more C/S (48.4%).In both groups there was high rate of maternalcomplications. In the first group obstetric haemorrhage (32.8%),caesarean hysterectomy (6.3%), BT (32.8%), hemoglobin less than10 gm/dl (53.1%), prolonged hospital stay (mean 6.52 ± 1.76days). In the second group the rate was 63.5%, 13.5%, and 61.5%and mean was 10.0 ± 1.12 respectively. There was one maternaldeath in the second group (1.9%), while in the first group nomaternal death was found.In both studies PP was associated with adverse perinataloutcome. In the first group there was a significantly higher rates ofprematurity, admission to SCBU, NICU, Apgar score less than 7 in5 minutes (P = 0.000; P = 0.001 and P = 0.001) respectively.There was no significant difference in perinatal mortality inthis group (P = 0.089).The second group also showed significantly higher rates ofprematurity, admission to SCBU, NICU, Apgar score <7 at 5minutes and increased perinatal mortality (P = 0.000; P = 0.000;P = 0.007 and P = 0.000) respectively.The study concluded that PP is associated with adversematernal and neonatal outcome. Increased maternal age, highparity and previous C/S were risk factors.