تؤثر المحاصيل البقولية على خصوبة الأراضي الزراعي حيث ترفع من المحتوى النيتروجيني للتربة بواسطة بكتيريا العقد الجذرية التي تعيش في جذور المحاصيل البقولية بتعايش تبادل منفعة، ويعتبر البرسيم الحجازي من أقدم محاصيل العلف البقولية المستدامة في العالم وهو ذو قيمة غذائية عالية. إن التفاعلات المتداخلة بين المجموعة الحيوانية المفصلية والمخلوقات الدقيقة والتربة تعمل على خصوبة وتركيب التربة في وجود الظروف البيئية المناسبة من درجة الحرارة والرطوبة والأس الهيدروجيني. هدفت هذه الدراسة إلى التعرف على المجموعات الرئيسية للمفصليات المتلازمة، وتأثير بعض العوامل المتداخلة على توزيعها وكثافتها، والعلاقات المتداخلة بين وفرة الحلم و ذوات الذنب القافز والمفصليات الأخرى بالنظام البيئي الزراعي للبرسيم الحجازي في كلا من موقع تاجوراء وعين زاره ووادي الربيع. بينت النتائج مفصليات الأرجل في التربة في مواقع الدراسة كانت شائعة في الطبقة العليا حتى عمق 10 سم في حقول البرسيم، وتميز موقع عين زاره بأعلى كثافة من مفصليات التربة المتلازمة مع البرسيم الحجازي يليه موقع تاجوراء ثم موقع وادي الربيع. عملية إفتراس الحلم على ذوات الذنب القافز كانت بمعنوية عالية في النظام البيئي الزراعي للبرسيم الحجازي. كما بينت النتائج بأن عوامل الموقع ودرجة الحرارة والرطوبة النسبية هي المتغيرات الأساسية في التسبب في ارتفاع الكثافة العددية لمفصليات التربة في النظام البيئي الزراعي للبرسيم الحجازي. Abstract Leguminous crops have an fertile effects on agricultural lands, mainly because of soil nitrogen contents produced by bacterial nodes as commensalism. Alfalfa is considered one of the oldest sustainable legume crop of nutritious value in the world. Life interactions among arthropods groups, microorganisms and soil working together for soil fertility and structure, in presence of suitable environmental factors mainly temperature, relative humidity and Ph. The main goals of this study are to identify soil arthropods, effect of interaction factors on the distribution and abundance of soil arthropods, interaction factors among soil collembolan and mites, and other soil arthropods associates with alfalfa agrecosystem in three locations of Tripoli area: Tajoura Ain Zara and wad Alrabee. Results revealed that alfalfa soil arthropods are common in the upper soil layer to a depth of 10 cm. Ain Zara showed the highest soli arthropod density than Tajoura and Wadi Alrabee. Predation of mites on collembolans was highly significant in Alafia agroecosystem. Data also indicated that location characteristics factors, temperature, year seasons, relative humidity were the main significant reasons for the relative abundance of soil arthropods in the alfalfa agroecosystem.
صبرية علي فرج رافع (2016)

Abstract A technique for mixed–languages program is introduced to mix C and FORTRAN. programming languages. This technique enables the programmer to develop programs. composed of different code sections each written in either C or FORTRAN. Each. Section can access and use the variables decleared in other sections. The variables. Decleared in C sections can be used in FORTRAN sections. This process in which a data variable is declared in a program section of a certain. Language and used in another section of another language is given the name "Data Variable Emigration". A preprocessor is designed to read the mixed source program, separate the code. Sections in different files and determine the emigrated variables and define them by the syntax of the language they emigrated to. Then the preprocessor send the sections files to the compilers to get the object files and send these files to a common linker to produce one execution file.
رحاب عبد الله رجب بن عبد الله (2009)

Abstract The search for a reliable source of energy has been a challanging task to manking while conventional energy resorces are diminishing nuclear fusion, especially laser fusion, promises to be the source of the future. Experimental costs in laser fusion are astronomical and computer modeling drastically minimizes such costs and gives a chance for less fortunate Gauntries to gain insight into the scientific and technical aspects of the subject since a large portion of information involved is classified. This work deals with the spatial and temporal evolution of the laser fusion produced by different laser pulses It is based on a computer code called MEDUSA which takes into account the variation in the wavelength, power density pulse duration, target geometry and material. It assumes a target which is divided into 20 cells each of 24 urn width. Inverse-Bremsstrahlung and resonance absorption are the two main mechanisms responsible for absorption of energy from the incident laser pulse. Fusion takes place in the plasma as a result of ablation of the plasma corona where the formed shock waves compress the plasma cells and heat them. The rate of energy deposited into and radiated from the plasma ,which causes variation of the plasma internal energy, is expressed by the energy equation. This equation is transformed into a finite difference form and solved by Gauss Elimination Method to calculate the plasma parameters such as electron(T e) and ion ternperatures(Ti), pressure(P) and density(p) and the different processes of energy absorption and losses. The temporal evolution of these parameters is studied through the divisions of the pulse into chosen time steps at which the evolution is clear. The results have shown that by increasing laser power the energy deposited into and radiated from the plasma increases. The electron and ion temperatures the plasma pressure and density also increase. This is because of the geadual propagation of the shock wave from the surface of the pellet towards its center causing compression of the plasma cells. The optimum value of such parameters are obtained close to the end of the pulse where the incident laser power is maximum and so as the energy deposited into the plasma center where heating and compression causes the consumption of the whole target After the end of the pulse duration, the plasma cells coordinates expand and the plasma parameters decrease, a process known as diminishing of the plasma The effect of the laser parameters of four diffterent lasers namely CO2, KrF, Nd-glass and Ruby of 5ns, 15ns and 45ns pulse duration was studied. It was found that: (1) the maximum value of the plasma parameters decrease by increasing the pulse duration of a certain power and wavelength, (2) the maximum value of the plasma parameters increase by increasing the wavelength because of increasing the energy deposited into the plasma by resonance absorption process. At the optimum implosion time, the plasma parameters show a strong spatial variation. However, a strong temporal variation of the plasma parameters was observed at the pellet center.
هناء محمد حسن موسي (1994)