حاتم هادي عبدالطائي

الجامعة التكنولوجية · العراق

تني حاج محمد المنتصر بالله, نايت عبد الرحمان عبد الكريم

كلية العلوم السياسية والعلاقات الدولية-جامعة الجزائر 3 - إبراهيم سلطان شيبوط · الجزائر

تهدف هذه الدراسة إلى إبراز دور وأهمية عملية إصلاح الحكم في بناء دولة القانون في الجزائر خلال الفترة ما بين 2000-2020. ونظرًا للأهمية الكبيرة والدور الإيجابي الذي تلعبه عملية الإصلاح السياسي في بناء دولة القانون والمؤسسات، كان لا بد للنظام السياسي في الجزائر من القيام بعملية إصلاح سياسية - اجتماعية ديمقراطية شاملة، تعمل على تلقين الأفراد وإكسابهم قيم الثقافة الديمقراطية (حرية، عدالة، مساواة، مشاركة، اختلاف، مواطنة)، وإصلاح أداء المؤسسات الحكومية وترشيد أدائها الوطني والمحلي، وذلك من أجل بناء نظام سياسي رشيد، يكرس التداول السلمي على السلطة، ويفتح باب التعددية والمشاركة لجميع الأطراف، ويعمل على تفعيل المجتمع المدني القادر على بناء دولة القانون وتفعيل أسس الحكم الراشد الصالح والقويم في الجزائر

Fadi Abdel Fattah, Said Ahmed Salem Al-Busaidi

كلية إدارة الأعمال-جامعة الشرقية · عمان

تساهم هذه الدراسة في دراسة جودة الخدمات المقدمة في مؤسسات التعليم العالي في سلطنة عمان. لذلك تهدف هذه الدراسة إلى فحص العلاقة بين أبعاد جودة الخدمة المتمثلة في الملموسية والموثوقية والاستجابة والتعاطف والاعتمادية من جانب ورضا الطلاب وولائهم من جانب آخر. تم اعتماد المنهج الوصفي التحليلي من أجل تحقيق أهداف الدراسة. كما تم استخدام كلا من البيانات الأولية والثانوية لأغراض الدراسة، و تم جمع عدد 305 إستبانة من خمس مؤسسات تعليمية عليا توجد في محافظات شمال الشرقية وجنوب الشرقية بسلطنة عمان.استخدمت الدراسة نموذج جودة (SERVQUAL) لتقييم وتتبع تأثير أبعاد جودة الخدمة على رضا الطلاب وولائهم في مؤسسات التعليم العالي في عمان. أشارت النتائج إلى وجود رابطة ذات تأثير مهم وإيجابي تربط بين أبعاد جودة الخدمة ورضا وولاء الطلاب في مؤسسات التعليم العالي.كما سلطت الدراسة الضوء على أهم التطبيقات العملية والتوصيات التي تم التوصل اليها، وفي الختام توصي الدراسة الباحثين بتوسيع نطاق البحث في الدراسات المستقبلية من خلال إضافة متغيرات جديدة مع جمع عينات أكبر للدراسة من رقعة جغرافية أوسع وكذلك دراسة تأثير أصحاب المصلحة الاخرين.

Ibtisseme Gamar, Taklit Chahinaz, W. Hamzi

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

L’objectif de ce travail est d’évaluer l’effet anti-hyperglycémiant de l’extrait de la plante d’hibiscus sabdariffa, chez des souris rendus diabétiques par un régime alimentaire à indice glycémique élève. cinquante souris males de race albinos qui pèse 20±5g, ont fait l’objet de notre étude et deviser en quatre groupes : un groupe témoin sains soumis à un régime alimentaire standard, le 2eme groupe témoin diabétique non traité, le 3eme groupe diabétique traité par un hypoglycémiant (Glibenclamide a une dose de 2,91mg/ml 2 fois par jour pendent 40j), et un groupe diabétique traitée par l’extrait aqueux de la plante étudier a une dose de (20 mg/10 g 2fois par jour pendent 40j).Nos résultats obtenus dans la présente étude, montrent clairement que le régime hyper glycémique induit chez l'animal un diabète caractérisé par une augmentation du taux de glycémie et une perte de poids.L’administration orale de l’extrait de cette plante provoque une récupération du poids corporel qui varie entre ± 5 g, une diminution de la concentration en glucose sanguin d’une variation de ± 120 mg / dl, on remarque aussi un changement de poids du foie qui a augmenté par ± 1,5 g par contre il y a pas un changement significatif dans le poids des reins, chez les souris diabétiques traités par la plante par rapport au souris diabétique témoins. En conclusion, l’extrait d’Hibiscus sabdariffa a un effet bénéfique dans le traitement du diabète

Omer Fadl Idris, Raya Khalafallah Siddig

كلية المختبرات الطبية-جامعة النيلين · السودان

Back ground: Hypertension and dyslipidemia are the major risk factors for cardiovascular disease (CVD), accounting for the highest morbidity and mortality among Sudanese population.The objective of this study was to associate plasma lipid profile and BMI in Sudanese hypertensive patients compare to normotensive subjects.Materials and Methods: case control study was carried out among 80 participants including 40 hypertensive patient and 40 normotensive subject from August to December 2018 at AL-kamleen Medical Centre, Gazira State-Sudan. Fasting venous blood was collected from each participant, data were collected from measurement of lipid profile inclouding total cholesterol(TC), Triglycerides(TG), low density lipoprotein –cholesterol (LDL -c), and high density lipoprotein cholesterol (HDL -c), were measured using spectrophotometer (350), and calculated BMI after measuring height and weight. Data was analyzed using the SPSS version 21.Results:In the current study the age of participants range between 45 and 75 year with their mean ± SD( 55.75 ± 9.48 ) it included 22 females (55%) and 18 males (45%), with body mass index range (20.9 to 35.0) with their mean ± SD (28.92 ± 3.69), the results showed significant increase in total cholesterol(TC), Triglycerides(TG), low density lipoprotein(LDL-C) and significant decrease in high density lipoprotein(HDL-C),P-value (0.000,0.000,0.015,0.000), respectively,when it compared among study groups. And significant increase in TC, HDL, LDL in female more than male, and no difference in TG between them,p-value=(0.031,0.003,0.038,0.824), respectively. The result showed significant negative moderate correlation between total cholesterol and age (r=-0.307,p=0.044), figure 1.And week correlation between triglyceride ,HDL-C, LDL-C and age(r=-0.138, p=0.397) ,(r=-0.285, p=0.074) , (r=-0.137 , p=0.399) respectively , figure 2-3-4. And significant positive moderate correlation between total cholesterol ,LDL-C and BMI (r=0.374 , p=0.034) ,(r=0.374 ,p=0.028) , respectively , figure 5-8 .And week correlation between triglyceride , HDL-C and BMI (r=0.043 , p=0.793) , (r=-0.010 , p=0.953) , respectively figure 6-7Conclusion:This study provided the evidence for the presence of high prevalence of dyslipidemia in hypertensive patients , significant increase in total cholesterol with their mean (203.4 ± 34.76 ), versus control ; 159.6 ± 32.13 mg/dl p-value=0.000) ,triglycerides with their mean (133.0 ± 54.79) ,versus control (84.72 ± 32.27 )mg/dl ,p-value=0.000) ,LDL-C with their mean ( 105.6 ± 12.26), versus control ( 93.29 ± 25.48) mg/dl ,p-value =0.015) ,while HDL-C was significant decrease with their mean (41.25 ± 7.29) ,versus control (60.63 ±12.46) mg/dl , p-value=0.000), and significant positive moderate correlation between total cholesterol ,LDL-C ,and BMI and week correlation between triglycerides ,HDL-C and BMI ,the result also showed significant negative moderate correlation between TC and age ,and negative week correlation between TG, LDL-C , HDL-C and age ,and significant increase in TC, HDL-C ,LDL-C in female more than male ,and no difference in TG between them ,p-value=(0.031 ,0.003,0.038,0.824) , respectively

Ali Abdel Rahman Saeed Marouf, سامي عبد الله أحمد عبد الله

كلية الدراسات العليا-جامعة السودان للعلوم والتكنولوجيا · السودان

In this study two types of laser (He-Ne and Green Diode) are used to radiate a sample of a powder milk from available on local markets for a difference durations of times, some of chemical parameters analysis were done (rate of Moisture , the measure of pH value and Ash%) on sample of powder milk .When use (He-Ne) laser it was found that a decrease in Moisture when we use it for short duration of time, but increased Moisture when used it for long duration ,also He-Ne laser decreased Ash and pH .When use green diode laser it was found that no affect on Moisture, but we found increase on Ash and decrease on pH value.

Addy Wahyudie, Om-salama Mubarak Mohamed Saeed Seed Ahmed

كلية الهندسة-جامعة الإمارات العربية المتحدة · الامارات

Sea waves are considered the most potent energy carriers among all sources of renewable energy. This research work is concerned with developingtechnologies to enhance performance and improve power capturing and conversion capabilities of a single heaving wave energy converter (WEC) actuated by a PMLG (Permanent Magnet Linear Generator). The objective of this dissertation is achieved by three techniques. The first one considers maximizing conversion between the mechanical and electrical powers. It is implemented by designing intrinsic resistance using a rapid procedure involving the mechanical and electrical models of the converter and considering its operating constraints. A robust PID (proportional – integral – derivative) controller is synthesized using complex polynomial stabilization to satisfy robust performance specifications and is utilized in the servo feedback control system to follow the velocity reference which is generated by the designed intrinsic resistance. The method is tested in several nominal and perturbed scenarios and its performance is compared with existing control strategies. It is also verified experimentally on a hardware in the loop experiment rig. In the second technique, a novel simple resonance circuit is implemented to maximize the ac-dc power conversion of a PMLG. A procedure is developed for designing a two-sided planner PMLG considering the corresponding physical parameters. The resonance circuit is composed of a three-phase rectifier with a shunt connection of capacitors between its diodes. The performance of the proposed circuit is compared with an existing resonance circuit. The designed resonance circuit generates more power, requires fewer components and presents fewer harmonics. Finally, a novel operation and control strategy for a wave power system consisting of a WEC, a battery storage unit, and a set of loads, is proposed to control the power flow at DC-link terminal.

Oktarian Johan Iskandar , Scott Whattam

كلية هندسة البترول وعلوم الأرض-جامعة الملك فهد للبترول والمعادن · السعودية

Numerous Upper Miocene to Quaternary harrats (alkali basalt volcanic fields) litter the western margin of Saudi Arabia along the Red Sea between Jordan and Yemen and are related to the opening of the Red Sea system. Many of these harrats have alkaline scoria bombs and lavas that bear mantle xenoliths, and one of these is Harrat Uwayrid, situated between Tabuk to the north and Al Ula to the south. This study presents new whole-rock and mineral chemistry data of Uwayrid mantle xenoliths. It provides new insights into their petrogenesis, including degrees of partial melting and oxygen fugacity of their source.Harrat Uwayrid peridotite xenoliths are classified as spinel lherzolite, spinel harzburgite with rare wehrlites. The xenoliths range from cm-scale to fist-size and are found primarily within basanite scoria bombs that comprise cinder cones in the central Pliocene to Quaternary field; a few were recovered, for the first time, from Upper Miocene alkali basalt and hawaiite lavas in the southern plateau. No distinctive features are apparent between peridotite xenoliths discovered in the older and younger host rocks.Fo# of olivines from most of the Harrat Uwayrid peridotite xenoliths ranges from 83.46 – 93.05. Mg# of clinopyroxene range from 83.33 – 93.84 with an average of 91.86. Cr# values range from 2.60 – 16.90 with an average of 11.63. Mg# of orthopyroxenes ranges from 89.40 – 93.68, with an average of 91.55, whereas orthopyroxene Cr# ranges from 3.41 – 16.34, with an average of 6.86.Based on Cr#, calculated degrees of partial melting are low to moderate, ranging from 1 – 17 %. Rare Earth Elements (REE) analysis exhibits distinct Light REE (LREE) enrichment relative to chondritic values. Calculated based on the compositions of coexisting olivine-orthopyroxene-spinel, oxygen fugacity values are -1.89 to -0.22 (relative to fayalite-magnetite-quartz, FMQ, buffer), suggesting equilibration in reduced conditions. Thermobarometry calculations based on coexisting olivine and clinopyroxene associations suggest that the peridotite xenoliths equilibrated at ~1.72 – 3.76 GPa at temperatures of ~1090o – 1135o C, corresponding to a depth of ~50 – 105 km.Therefore, the study establishes that the peridotite mantle xenoliths from Harrat Uwayrid were subjected to partial melting and metasomatism. They generally exhibit similar degrees of partial melting, oxidation state and metasomatism compared to other similarly aged western Arabian Harrats. This indicates the mantle below Harrat Uwayrid was subjected to similar large-scale events of the Arabian plate.

Youghourta Kebbab, O. Ourrad Meziani

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

La standard map est un modèle mathématique que les physiciens utilisent pour comprendre et décrire le chaos hamiltonien. Ca consiste à discrétiser les équations décrivant le mouvement du système hamiltonien à étudier. La question qui se pose est comment la résolution numérique des équations obtenues nous permet elle de tirer les propriétés du système dynamique et étudier le chaos.En faisant différentes simulations, dans lesquelles nous varions le paramètre de contrôle $k$ qui est la constante de perturbation, et le nombre de conditions initiales. Nous représentons ensuite, les résultats par des sections de Poincaré, qui présentent plusieurs structures.En générale,nous retrouvons trois types de structures différentes: les courbes de KAM (tores non résonnants) qui représentent le mouvement de rotation du système; les courbes périodiques fermées: les îlots de stabilité (tores résonnants), qui représentent un mouvement oscillatoire du système; et en fin l'espace dense ou courbes chaotiques (mer chaotique) qui représente le mouvement chaotique du système.

دالية ذيب هاشم مصري, رائد الكوني

كلية الدراسات العليا-جامعة النجاح الوطنية · فلسطين

Tomato (Solanum lycopersicum) consider as one of the top popular crop in Palestine; is infected with several pathogens where Tomato Spotted Wilt Virus (TSWV) is one of the most devastating one, causing serious damages and large economical losses on tomato crops. This study was aimed to reveal the presence and prevalence of the virus in Palestinian territories (West Bank) for the first time. About 232 samples were collected from different governorate of northern of West bank Palestine during the growing season 2017 / 2018 and were tested for TSWV by double antibody sandwich enzyme linked immunosorbent assay (DAS-ELISA). During the field surveys, several symptoms were noticed on tomato plants in the field of Nablus; Tubas; Qalqilia; Talkarem; Jenin and Jericho. The appeared symptoms were on leaves as leaf yellowing, brown rings or line patterns. The whole plants showed reduction in growth, chlorotic and necrotic spots on both leaves and fruits. These systematic symptoms were considered as the best indication for the existence of (TSWV). By serological test, the presence of TSWV on tomato plants in Palestine was confirmed; where the prevalence of the virus was reached up to 1.27%. This low percent was considered alarming, since the possibility of transmitting the virus through thrips that commonly widespread in the country. Looking for virus resistant varieties was recommended. This research study was to confirm the presence of this important virus in Palestine for the first time.