سناء هاشم حمادة محمد خير , محمد سليمان علي التوم

كلية الدراسات العليا والبحث العلمي-جامعة شندي · السودان

AbstractCopper Cu(II),Cobalt Co(II) and Zinc Zn(II) ion complexes of the ligandsmorpholinbenzoyl benzamide(MBB),morpholinobenzoylacetamide (MBA)and morpholinosaliccylacetamide (MSA) were prepared and differentanalytical techniques such as Ultra Violet and visible Spectroscopy (UV/vis)and Infra-Red Spectroscopy (IR) were used to characterize the productsobtained. The obtained result of the complexes indicate the existence ofbidentate nature of ligands, which undergo coordination to metal ions withoxygen, nitrogen donor atom .The antimicrobial activity of the ligandsmorpholinobenzoylbenzamide(MBB), morpholinobenzoylacetamide(MBA)and morpholinosalicylacetamide(MSA) and its Co (II), Cu (II) and Zn (II)complexes were conducted against various microbes such as Gram Positivespecies Staphlococcus aureus, Enterococcus fecalis,Bacillus cerus and Gramnegative Escherichia coli, Salmonella typhi ,and Pseudomonas, effects ofthe investigated compounds have been tested by the disc diffusion method.A comparative study of inhibition values of the ligands and their complexesindicated that the biological activity of the ligands alone and with itscomplexes, some ligands had lower activity than their complexes form andother have higher than complexes. some complexes have higher activity incomparison with ligand activities some complexes had lower activity andother complexes showed no activity against some type of bacteria .ligands like(MBB) had no activity against Salmonella typhi, Escherichia coliand Staphlococcus aureus, Enterococcus fecalis.(MBA) had no activityagainst Pseudomonas, Salmonella typhi, Staphlococcus aureus,Enterococcus fecalis,Bacillus cerusالمستخلصمعتقدات أيونات النحاس (II) ,الكوبالت (II) والزنك (II) مع اللواقط morpholinbenzoyl benzamide(MBB),morpholinobenzoylacetamide (MBA) and morpholino saliccylacetamide (MSA) تم تحضيرها وتحليلها بتقنيات مختلفة مثل جهاز الأشعة فوق البنفسجية والمرئية وجهاز الأشعة تحت الحمراء استخدمت لتشخيص الناتج المتحصل عليه ، المعقدات الناتجة تشير إلى وجود لواقط ثنائية المنح عن طريق مواقع ذوات الأوكسجين والنيتروجين الناشط ، المضاد للميكروبات للواقك ومعتقداتها من النحاس والكوبالت والزنك اجريت ضد ميكروبات مختلفة مثل البكتيريا موجبة مثل Staphlococcus aureus, Enterococcus fecalis,Bacillus cerus وبكتيريا سالبة مثل Escherichia coli, Salmonella typhi ,and Pseudomonas تم التحقق من تأثير المركبات اختبرت بطريقة الانتشار القرصي ، واشارت الدراسة مقارنة بقيم التثبيط بين قواعد مانخ ومعقداتها أن بعض اللواقط أقل نشاط من المعقدات المكونة وبعضها أعلى المعقدات . وبعض المعقدات لها نشاط على مقارنة مع اللاقط وبعض المعدات لها نشاط أقل وأخرى ليس لها نشاط ضد بعض أنواع البكتريا . أن اللاقط (MBB) لمي يعطي ناشط مع البكتريا Salmonella typhi, Escherichia coliand Staphlococcus aureus, Enterococcus fecalis واللاقط MBB)) لم يعطي نشاط مع بكتيريا Pseudomonas, Salmonella typhi, Staphlococcus aureus,Enterococcus fecalis,Bacillus cerus.

Salim Ali Ebed Eltom, Elhadi Badawi Mahgoub

كلية الدراسات العليا-جامعة السودان للعلوم والتكنولوجيا · السودان

The aim of this thesis is to develop a model to study the performance of Kaplan turbine of unit number four in rosiers hydro power station .To achieve this aim , a model was develop using simulation soft ware matlab/simulink based on the dynamic equations of Kaplan turbine , then the simulation results were compared with the results of the real system in case of loading and idling mode .The simulation results showed very good agreement with the results of the real system , with small deviations in the results of guide vanes opening and runner blade opening and this due to the change in the pressure of turbine outlet and downstream level.

Nazim Osman Bushara, Ajith Abraham

كلية علوم الحاسوب وتقانة المعلومات-جامعة السودان للعلوم والتكنولوجيا · السودان

Weather forecasting is the application of science and technology to predict the state of theatmosphere for a future time at a given location. Human kind has attempted to predict theweather since ancient times. Generating predictions of meteorological events is very complexprocess, because the atmosphere is unstable and the systems responsible for the events are theculmination of the instabilities and involve nonlinear interaction between different spatial scalesfrom kilometers to hundreds of kilometers. The chaotic nature of the atmosphere limits thevalidity of deterministic forecasts, but the increasing economic cost of adverse weather eventsprovides a strong reason to generate more accurate and updated weather forecasts.Weather forecasting (particularly rainfall prediction) is one of the most imperatives,important and demanding operational tasks and challenge made by meteorological servicesaround the world. It is a complicated procedure that includes numerous specialized fields ofknowledge. The task is complicated because in the field of meteorology all decisions are to betaken with a degree of uncertainty, because the chaotic nature of the atmosphere limits thevalidity of deterministic forecasts. Long term Rainfall prediction is very important for countrieswhose economy depends mainly on agriculture, like many of the third World countries. It iswidely used in the energy industry and for efficient resource planning and management includingfamine and disease control, rainwater catchment and ground water management. This thesisstudies long term rainfall prediction in Sudan using computational intelligence.Monthly meteorological data obtained from Central Bureau of Statistics, Sudan from2000 to 2012, for 24 meteorological stations distributed among the country has been used.The relationship of rainfall in Sudan with some important parameters is investigated anddetermined the most influencing variables on rainfall among the available ones.The performance of base and Meta algorithms to deal with rainfall prediction problem isexplored and, compared.A novel method to develop long-term rainfall prediction model by using ensembletechnique is proposed. The new novel ensemble model is constructed based of Meta classifierVote combined with three base classifiers. Several neuro-fuzzy Models using different types ofmembership functions, different optimization methods and different dataset ratios for trainingand testing are built.The proposed models are evaluated and compared by using correlation coefficient, meanabsolute error and root mean-squared error as performance metrics. The empirical resultsillustrate that the ANFIS neuro-fuzzy system and the ensemble Vote+3 models are able tocapture the dynamic behavior of the rainfall data and they produced satisfactory results, so theymay be very useful in long-term rainfall prediction.Spatial analysis of rainfall in Sudan is conducted for the interval 2000-2012 on threelevels (towns, states and regions) and rainfall maps are obtained.

Abderaouf Krouk, Chamse Eddine Echikr , Khalida Boutemak

كلية التكنولوجيا-جامعة سعد دحلب - البليدة · الجزائر

Muhammad Hawwa, مأمون محمد عبدالقادر حروب

كلية الهندسة-جامعة الملك فهد للبترول والمعادن · السعودية

In this study, an efficient universal mathematical model is developed to study the dynamics of floating cable driven/moored platforms (FCDPs). The model is based on establishing the mass, stiffness, and damping matrices of the FCDP as functions of the platform position. The current research embraces the kinematic and dynamic analysis of two types of FCDPs in marine environments. These are: a floating movable cylindrical platform (FMCP), and a movable spar platform (MSP). In both of these platforms, variable length mooring cables are controlled by reel/motor devices mounted on the floating structure of the platforms. An experimental study is conducted in a small basin to study the floating cylindrical platform in a static fluid environment to verify the developed mathematical model of the FCDPs.For the sake of generality, the floating structure has a cylindrical geometry with six degrees-of-freedom and it is connected to the seabed by a mooring system. The floating platforms are subjected sea wave forces, in addition to the buoyancy force. The main purpose of the analysis is to identify conditions that keep the mooring cables taut when the FCDP is exposed to environmental loads. Thus, an effective area is defined as the set of all locations in which the floating structure can be at without losing the mooring cable tensions. Degree of rigidity of the FCDPs is checked within their effective area. Measures such as the minimum natural frequency, minimum mooring cables’ tensions, and minimum submerged depth are used to assess FCDP mobility and degree of rigidity.RMS values of tensions in the mooring cables, as well as of displacement, velocities, and accelerations of the floating structure of FCDP are obtained for various cases of mooring system strengths and mooring system pre-tensions. The dynamic response of the FCDP with one or two mooring cables failure is investigated. Finally, the influence of the mooring system configuration on the effective area of MSP is studied.

Yacine Bouadjenek, Djame Benmahiddinel, Samia Boutrid

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

Les dispositifs mobiles sont des outils actuellement utilisés dansplusieurs domaines pour automatiser et faciliter les tâches quotidiennes,pour ce faire nous avons utilisé ces derniers pour automatiser le suivi desdiabétiques. Nous avons choisi de modéliser avec le formalisme UML,notre choix s’est porté par rapport à sa stabilité et son indépendance vis-àvis des langages d’implémentation. Afin de réaliser notre application,nous avons utilisé comme SGBD «SQLite» et «MySql». Quant à laréalisation des interfaces, nous avons utilisé le langage XML ainsi queJAVA

شيماء غضيفي, ماجدة عمران

كلية العلوم الاجتماعية والإنسانية-جامعة زيان عاشور - الجلفة · الجزائر

مركز الضبط و علاقتها بالاغتراب الوظيفي لدى معلمين المرحلة الابتدائية .هدفت الدراسة : التعرف على درجة الاغتراب الوظيفي لدى معلمين الابتدائي و كذا التعرف على مستوى مركز الضبط( الداخلي و الخارجي) لدى عينة الدراسة، كما هدفت الدراسة الى معرفة العلاقة بين مركز الضبط و الاغتراب الوظيفي، كما هدفت الى التحقق من وجود فروق بين المعلمين في مركز الضبط و الاغتراب الوظيفي تعزى لمتغير الجنس و المستوى الدراسي .أدوات الدراسة :ـ مقياس الاغتراب الوظيفي (بن زاهي منصور ) ـ مقياس مركز الضبط لروتر (ترجمة علاء الدين كفافي)عينة الدراسة : تكونت عينة الدراسة من 100 معلم و معلمة في مدارس مدينة بوسعادة ، و تم اختيارهم قصديا .نتائج الدراسة : أظهرت نتائج الدراسة عن وجود علاقة ارتباطية بين مركز الضبط و الاغتراب الوظيفي، كما أظهرت النتائج كذلك وجود فروق دالة احصائيا في مركز الضبط و الاغتراب الوظيفي تعزى للمستوى و الجنس .

Salma Haydar

كلية العلوم والأداب-الجامعة الأمريكية في بيروت · لبنان

B. Khettal, Sadia Moussaoui, Sissa Benhalima

كلية التكنولوجيا-جامعة عبد الرحمان ميرة - بجاية · الجزائر

Les antioxydants jouent un rôle très important dans divers domaines d’applicationstitre d’exemple En santé, OU ces derniers empêchent l’oxydation des graisses qui peuvent êtrenéfastes pour les vaisseaux sanguins. Ainsi les caroténoïdes présents dans les alimentspermettront de diminuer le taux de LDL-cholestérol dans le sang et de limiter le risque desmaladies cardio-vasculaires. En cosmétiques, ils sont prisés pour limiter le vieillissement de lapeau (substances anti-âges). Dans le domaine agroalimentaire comme agent conservateur afinde protéger les produits alimentaires contre l’oxydation, prolonger leur durée de vie et empêcherla diffusion de l'emballage.Les composés phénoliques dont le pouvoir antioxydant est dû à leurs capacités de piégerles radicaux libres « activité anti-radicalaire », de réduire et/ou de chélater les ions métalliques« pouvoir réducteur et pouvoir chélateur » Ce pouvoir antioxydants leurs confère diversespropriétés biologiques comme Antibactériens, anticancérigène, anti-inflammatoire,antidiabétique, ….En En raison des effets bénéfiques de ces antioxydants en santé, en industrie des aliments ouencore en industrie cosmétique, la caractérisation des espèces et variétés des plantes pour leurscontenue en polyphénols et leurs potentiels antioxydants est devenue ces dernières années d’unegrande importance dans la recherche scientifiqueAntioxidants play a very important role in various fields of application for example Inhealth, where they prevent the oxidation of fats which can be harmful to the blood vessels.Thus, the carotenoids present in food will reduce the level of LDL-cholesterol in the bloodand limit the risk of cardiovascular disease. In cosmetics, they are prized to limit the aging ofthe skin (anti-aging substances). In the food industry as a preservative to protect foodproducts against oxidation, extend their shelf life and prevent the packaging from spreading.Phenolic compounds whose antioxidant power is due to their capacity to trap freeradicals "anti-radical activity", to reduce and / or chelate metal ions "reducing power andchelating power" This antioxidant power gives them various biological properties such asAntibacterials, anticarcinogenic, anti-inflammatory, antidiabetic,….Due to the beneficial effects of these antioxidants in health, in the food industry or in thecosmetics industry, the characterization of plant species and varieties for their polyphenolcontent and their potential antioxidants has become of great importance in recent years in thescientific research.

Maher AlARaj, Muneera Ali Zaher Alsulaimani

كلية الابتكار التقني-جامعة زايد · الامارات

Artificial Intelligence (AI) is transforming how governments deliver services by enabling automation, personalization, and data-driven decisionmaking. In the United Arab Emirates, particularly in Abu Dhabi Emirate, the TAMM platform exemplifies this transformation, integrating AI to streamline citizen-government interaction. Understanding the factors that influence the user’s satisfaction of Powered AI services in the public sector is crucial for effective policy implementation and user engagement. This study employs a sequential explanatory mixed-methods approach, grounded in the Unified Theory of Acceptance and Use of Technology (UTAUT), extended with User Satisfaction as a fifth construct. Quantitative data were collected from 137 TAMM platform users and analysed using Partial Least Squares Structural Equation Modelling (PLS-SEM). Follow-up interviews were conducted to add depth and interpretive insights. The quantitative results showed that Effort Expectancy, Facilitating Conditions, and Social Influence had significant positive effects on User Satisfaction, while Performance Expectancy was not statistically significant. However, the qualitative analysis revealed strong support for Performance Expectancy, highlighting its importance in user narratives. Thematic insights also emphasized the demand for hybrid human-AI interaction, ethical AI design, and trust as critical elements influencing user experience. Demographic factors, such as gender and prior AI experience, were found to moderate perceptions of usability and support needs. This research contributes to the UTAUT literature by applying the model in a Middle Eastern government context. This study provides strategic insights for policymakers, emphasizing the need to ensure the long-term success of AI-driven public services in Abu Dhabi.