سعيد فكرة, مراد كاملي
كلية العلوم الإسلامية-جامعة باتنة 1 - الحاج لخضر · الجزائر
Mohamed Zeboudji, Qada Benameur
كلية علوم الطبيعة والحياة-جامعة عبد الحميد بن باديس مستغانم · الجزائر
Dairy cattle’s farming is one of the pillars of the agricultural economy. Increasing the rate of involuntary culling is an important issue in cattle breeding. The objective of this study was to determine the nature and the frequency of the diseases responsible for dairy cows killing in Mostaganem province.This is a retrospective longitudinal epidemiological study. This preliminary study was carried out at the slaughterhouse of Tigditt-Mostaganem during the period between January 1st and December 31st, 2019. The animals received at this slaughterhouse came from several localities of Mostaganem province.In total, 116 dairy cows were slaughtered during this study. A total of 19 diseases were detected in this study. The results obtained showed that the main pathology encountered was chronic mastitis followed by infertility problems, brucellosis and displacement of the abomasum. Respiratory diseases were less represented in the present study.In conclusion, this study provided some information on the most important reasons for the increase of dairy cows culling in cattle farms of Mostaganem province. An effective control plan need to be adopted in order to control these pathologies at the level of cattle farms and to decrease the economic losses linked to the involuntary culling of breeding cows
ميران محمد جمال طلال مسودى, يوسف نجاجرة
جامعة القدس · فلسطين
Breast cancer (BC) is one of the most commonly diagnosed cancers in women. Estrogen signalingand the estrogen receptors (ERα, ERβ) are implicated in breast cancer progression. Majority ofbreast cancers start out as estrogen dependent as a result of overexpression of ER-regulated genes:Estrogen deprivation therapy using anti-estrogens (AEs) and aromatase inhibitors (AIs) to block ERactivity and arrest the estrogen-dependent growth of BC still represents the primary treatment forbreast cancer patients. This approach, however, frequently fails and patients develop resistant breastcancer, which is almost untreatable. In this project we focused on synthesizing a potent coactivatorbinding inhibitors (CBIs) molecules that block ER activity through a different mechanism that mayarrest the estrogen-dependent growth of BC and offer a solution to the existing resistance. Coactivatorbinding inhibitors (CBIs) act by blocking the conformational change needed for DNAbinding and gene expression. In this project set of compounds have been designed, synthesizedthrough sequential substitution of the chlorine atoms of 2,4,6-trichloropyrimidine with amines orother nucleophiles. The synthesized compounds were purified using chromatography techniques,and characterized by (1H-NMR, 13C-NMR, FT-IR and MS (ESI)) spectroscopy. Some of thesecompounds were screened for their inhibitory activity against the acute myeloid leukemia cells(Molm-13) cells. Two forms of Molm-13 had been used to evaluate the role of p53. In one casecells were transfected with empty vector and in the other the cells were tranfected with sh-p53 RNA(sh-p53). The viability of cells was determined using WST-1 assay.Initial results of the tested compounds demonstrated that MY12 (35) and MY3 (26) exhibited potentactivities against the two forms of Molm-13 cell lines and have a dose dependent effect while thecompound MY2 (25) showed no significant inhibitory action on the same cell lines.
Hasnaa Zitari, Houda Gaci , Nacer Said
كلية التكنولوجيا-جامعة سعد دحلب - البليدة · الجزائر
Les cellules photovoltaïques sont des composants capables de convertir directement l’énergie lumineuse en énergie électrique, en utilisant de la lumière avec certains matériaux semi-conducteurs. L’électricité produite peut être utilisée pour l’alimentation ou revendue au réseau de distribution. Ce travail consiste à étudier etsimuler une cellule solaire double jonctions à base de InGaP/Si. Après avoir rappelé le principe de fonctionnement et les caractéristiques d’une cellule solaire, l’influence de la concentration d'indium et de l'épaisseur de la cellule du haut InGaP sur les caractéristiques de la cellule a été étudiée. les résultats de simulation montrent que la concentration d’indium influe considérablement sur le rendement de la cellule,aussi un rendement optimal de 24,8% a été obtenu pour une concentration d’indium de 59% en cellule tandem, et un rendement de 27% pour une concentration d'indium de 10% en cellule cascade
حسین خبشر , عبدالنور حمداوي , معمر غداوية
كلية العلوم الاقتصادية والتجارية وعلوم التسيير-جامعة الجيلالي بونعامة - خميس مليانة · الجزائر
:تهدف هذه الدراسة المقامة بالصندوق الجهوي للتعاون الفلاحي بخمیس ملیانة الى البحث في أثر التأمین الفلاحي كأداة من أدوات التأمین من المخاطر الفلاحیة، ودوره في رفع مردودیة الإنتاج الفلاحي، ونظرا لحداثة هذا الموضوع على المستوى المحلي ولمعرفة عناصره قمنا بعرض مفهوم التأمین الفلاحي و المخاطر التي یتعرض لها القطاع الفلاحي، كما استعرضت الدراسة مختلف منتجات التأمین الفلاحي التي یقدمها الصندوق الجهوي للتعاون الفلاحي.وبعد إجراء البحث ودراسة تطور إنتاج الحبوب و المردودیة المصاحبة له وكذا أقساط التأمین على الحبوب و ذلك بولایة عین الدفلى خلال الفترة 2013 -2018، تم التوصل الى أن تأثیر التأمین الفلاحي على مردودیة الإنتاج الفلاحي ضعیف، وأرجعنا هذا الضعف الى عدة أسباب أهمها نقص الثقافة التأمینیة لدى الفلاحین واعتمادهم الكبیر على نسب تساقط الأمطار في زراعة الحبوب.
Mona Ahmed, Monia Atta Ahmed
كلية الدراسات العليا-جامعة السودان للعلوم والتكنولوجيا · السودان
The biliary system have many diseases affecting it and these diseases need to be diagnosed but in this study certain one was evaluated : cholecystitis, cholangiocarcinoma, gallstones and obstruction.The aim of this study was to study the biliary system disorders using Magnetic Resonance CholangioPancreatography( MRCP) ; the study took place in Khartoum state centers include: Antalia medical center and Modern medical center during the period between August and December 2015.The sample size was sixty patients were examined used MRCP , using echo time in excess of 200ms and repetition time of more than 10s are required, field of view 300mm and slice thickness 1mm.MRCP images were reviewed at the diagnostic workstation and on hard copy films by expert radiologists. This examination was performed using GE 1.5 Tesla . a body coil was used, peripheral pulse unit and respiratory compensator. The result after analysis by SPSS program, showed that: The biliary diseases were predominant among age group between( 69-79) years as (51.7%) come next (58-68)years as (35%), (47-57)years as (8.3%), (36-46)years as (3.3%) and (25-35)years as (1.7%) as well as predominant among female(38) relative to male(22) as( 63.33%) and( 36.67%) respectively. The biliary diseases were predominant among weight group between (70-79)Kg in female(31) relative to male(16) as (65.95%) and (34.05%) respectively, come next the weight group between (80-89)Kg in female (7) relative to male(6) as (53.85%) and (46.15%) respectively. The most common cause of the biliary diseases were biliary obstruction due to different causes and gallstones. The biliary obstruction predominant among female(17) relative to male(7) as (70.83%) and (29.17%) respectively . The gallstone predominant among female(3) relative to male(2) as (60%) and (40%) respectively .The most common cause of biliary obstruction is Ca because the malignancy was seen mainly in elderly people. Cholecystitis and cholangio carcinoma were predominant also among female(10)and (9) relative to male(4) and(8) respectively as (71.4%) and (52.9%), (28.6%) and (47.01%) respectively.The study showed that elder females with heavy weight were the most patients got biliary diseases.
إشراق سعيد, عبدالمنعم آيت علي
كلية الطب والصيدلة-جامعة محمد الخامس بالرباط · المغرب
La PE constitue une fibrose péritonéale à caractère diffus pouvant induire une sclérose, engainant les anses grêliques à la facon d'un cocon et son dc est le plus souvent posé lors d'une laparoscopie ou laparotomie. C'est une complication rare, néanmoins, son pronostic désavantageux en fait une complication redoutable. Par le moyen d'une observation de péritonite sclérosante avec revue de littérature nous avons réalisé une étude clinique, paraclinique et thérapeutique pour établir une prise en charge meilleure de cette affection. Les signes cliniques sont variables et vont de l'asymptomatologie à l'occlusion. La péritonite fibrosante est le plus souvent due à la DP, à une chimiothérapie intrapéritonéale ou un syndrome d'inflammation pelvienne d'origine tuberculeuse. La radiologie, et surtout, la TDM permet une approche diagnostique. La laparoscopie/tomie permet de poser le diagnostic et la thérapeutique. L'anatomopathologie affirme le diagnostic en révélant un dépôt de fibrine. Le traitement médical décoit le plus souvent. Le traitement chirurgical est indiqué dans les occlusions intestinales complètes, les sub-occlusions répétitives et les situations urgentes (perforations, nécroses, hémorragies). Les deux complications majeures sont la perforation et les récidives. En l'absence de traitement, la fatalité est l'issue dans la plupart des cas. Quoique les progrès actuels dans la PEC thérapeutique de la péritonite sclérosante, le pronostic demeure médiocre.
دعاء هادي خشان , واقد حميد حسن
كلية الهندسة-جامعة كربلاء · العراق
Hydraulic structures such as gravity dams are classified as essential structures which need to high cost to construct it and have the vital role in providing strong and safe water resource. These structures are subjected to seepage problem which is considered to be a dangerous phenomenon that may generate uplift pressure, which may cause the dam to function improperly, in addition to the exit gradient that may cause piping if exceeded a safe value.This research illustrates the application of a new Genetic Algorithm with Finite Difference Programming (GA-FDP) technique, A MATLAB code was used to perform the GA-FDP optimization model in order to find the optimal design for safe hydraulic structure. The objective was to minimize the construction cost function. The main constraints are those that satisfy a factor of safety against uplift pressure and factor of safety against piping. The proposed GA-FDP model has fulfilled the optimum design task into two stages. Firstly, Finite difference Programming (FDP) analyzed the seepage problem numerically after verification with GeoStudio(2018 R2)SEEP/W to obtain the uplift pressure and exit gradient and to determine other characteristics such as the pressure head, total head, discharge and total cost of the structure. Also, comparing numerical model SEEP/W of calculating uplift force and exit gradient under the dam with benchmark example in soil mechanics which shows a good agreement.Secondly, the Genetic Algorithm (GA) was applied with finite difference programming to obtain the optimum location and depth for cutoffs needed for the preliminary design of the Dam which satisfied the factors of safety against piping and up lift pressure.In FDP, the seepage problem was analyzed to define the effect of depth,location, number of cutoffs and isotropic degree on the value of uplift force and exit gradient. The results was observed that the relative head (H/B) had a significant effect on increasing the exit gradient and uplift force. Also, minimum exit gradient was noticed when the cutoff location ratio at the downstream is of (x1/b=1) with a maximum relative depth of (d1/b=0.6), while the minimum uplift pressure was observed when the cutoff location ratio at the upstream is of (x1/B=0) with a minimum relative depth of (d1/B=0.1).Model result revealed that when a cut-off is at the upstream, the uplift pressure is decreased along the base of floor. Also, the uplift distribution decreases with increasing the depth of cut-off because the cut-off causes an increase in the length of creep, which increases the head loss. Whenever a cut-off is located a drop in the uplift pressure at that location is observed as expected. Also, the uplift pressure starts decreasing when using different lengths of cut-offs compared with the case of no cut-off; this behavior is reversed beyond the point where x = 0.5b.In the Genetic algorithm-finite difference programming using the constrain of input variables with differential head (H/b)= 0.25,0.5,0.75, floor-length (B)=20m, depth of impervious layer (D=30), and ratio of permeability in x to y (kx/ky = 1,2,4,8). Six various depths ratio (d/B=0.1:0.6), for each depth ratio, various cutoff locations, (b/B=0:1) were used.It is clear that the results were which obtained from GA-FDP are the optimum solution that’s achieve the two constaints (safety against exit gradient and uplift force) with minimum cost. The optimum locations of cutoff 1(X1/B) varied from (0 to 0.33) B, (0 to 0.24)B, (0 to 0.1)B, and (0 to 0.18)B for Kr equal to(1,2,4, and 8) respectively. The optimum locations of cutoff2 (X2/B) varied from(0.875 to 1) B for various values of Kr. This behaviour is due to prevent increasing the uplift pressure and exit gradient of the structure. The optimum depth of cutoff 1(d1/B) varied from (0 to 0.35)B for Kr equal to (1, 2, 4 ) ,(0 to 0.6)B for Kr equal to 8) and the optimum depth of cutoff2 (d2/B) varied from (0.15 to 0.5) B, (0.1 to 0.6)B, (0.2 to 0.7)B, and (0.3 to 0.7) B for Kr equal to(1,2,48) respectively.It was found that the optimum solution reduced the cost by 81% ,72%, 66%, 53% from the cost of traditional solutions for Kr equal to (1,2,4, and 8) respectively.
أكلي سالمي , فتيحة نعار, كريمة قرواح
كلية الحقوق والعلوم السياسية-جامعة مولود معمري - تيزي وزو · الجزائر
خصصت الدولة الجزائرية في السوق ملكية عقارية معتبرة ومهمة موجهة لإنجاز مشاريع استثمارية حيث قامت في سياساتها المختلفة بتطوير وترقية الاستثمار وهذا بتنظيم ومحاولة توفير المواقع العقارية المناسبة والمهيئة لاستقبال النشاطات الصناعية، ومن أجل تحقيق الأهداف والنتائج المبتغاة من العقار الصناعي الموجه للاستثمار فكان لابد من إخضاع تسيير هذا الأخير إلى مؤسسات تتولى المهمة بطريقة فعالة وتتكفل بتسييره على أحسن وجه ليكون جاهزا لاستقبال المشاريع الاستثمارية عليه وضمان الاستغلال الأمثل.
فريدة حنوف, جمال قدام, روفية زغلول
كلية العلوم الاقتصادية والعلوم التجارية وعلوم التسيير-جامعة محمد الصديق بن يحيى - جيجل · الجزائر
تهدف هذه الدراسة لقياس أثر سياسة توزيع الارباح على السعر السوقي للسهم وذلك من خلال دراسة قياسية لمجمع صيدال خلال الفترة من 2010 إلى 2019 و قد أظهرت نتائج الدراسة أنه لا توجد أي علاقة معنوية بين سعر السهم و حجم السيولة.
