نظراً لاهمية حجم البذور المزروعة على إنبات البذور ونمو النباتات النامية من البذور مختلفة الاحجام والمحصول الناتج منها. أجريت الدراسة على حبوب نبات الذرة Zea mays وبذور فول الصويا Soya bean وذلك لمالهما من أهمية أقتصادية فى حياتنا كغذاء للانسان والحيوان. أجريت التجارب فى المعمل وكذلك فى الحقل، فى المعمل تم إجراء التجارب على تأثيردرجة الحرارة والضوء على إنبات البذور المدروسة. درجات الحرارة التى تم أستعمالها هى (10 و15 و20 و25 و30 و35 مْ) فى الضوء والظلام. ظهرت النتائج أن هناك تأثيراً معنوياً لحجم و وزن البذور على معدل الانبات لحبوب الذرة وبذور فول الصويا فى درجات الحرارة المختلفة فى الضوء وفى الظلام ، كان أفضل معدل للإنبات فى البذورالكبيرة الحجم لكلا النباتين سواء فى درجات الحرارة العالية أو المنخفضة ، وأقل معدل إنبات كان للبذور الصغيرة الحجم ، ودرجة الحرارة المثلى لانبات بذور كلا النباتين هى25 مْ ،وكان اعلى إنبات فى البذوركبيرة الحجم ، حيث كان فى الذرة 75% فى الضوء و 68 % فى الظلام ، أما بذور فول الصويا فكانت نسبة إنبات البذور الكبيرة الحجم 85 % فى الضوء ، و73 % فى الظلام .بينما إنبات البذور الصغيرة الحجم أقل حيث كان لبذور الذرة 59.5 % فى الضوء ، و60.5 % فى الظلام أما بالنسبة لبذور فول الصويا فإن معدل الانبات فى الضوء 73 % ، وفى الظلام 70 % .أجريت الدراسة الحقلية لتعيين تأثير حجم البذورو وزنها على معدل الانبات ونمو النبات فى الذرة وفول الصويا فى التربة ، كذلك لدراسة تأثير حجم البذورووزنها على نمو البادرات و تطور مراحل النمو لكلا النباتين ، فى هذه التجربة تم تعيين نسبة الانبات فى الحقل بعد أسبوع من زراعة البذور فى التربة ، وكانت أعلى نسبة إنبات لبذور الذرة الكبيرة الحجم 80.66 % ، وأقل نسبة إنبات للبذور الصغيرة الحجم 67.33 % ، أما نسبة إنبات بذور فول الصويا فى الحقل كانت أعلى نسبة إنبات للبذور الصغيرة الحجم 72.307 % ، و أقل نسبة إنبات للبذور الكبيرة الحجم 31.538 %.تم قياس إيضاَ النمو الطولى للنباتات بتتبع قياس طول النبات أسبوعياً و أستمر إلى أن توقف النمو ، كانت أفضل النتائج المتحصل عليها للنباتات النامية من بذور كبيرة الحجم لكلا النباتين ، حيث تميزت النباتات المزروعة من بذور كبيرة الحجم باطول ساق إذ بلغ متوسط طولها 130.9 سم لنبات الذرة ، و33 سم لنبات فول الصويا ، ايضاً تم تعيين الوزن الطرى والوزن الجاف للنبات الكامل و المجموع الخضرى و إيضاً متوسط الوزن الطرى و الجاف لكل من المجموع الجدرى و السوق و الاوراق و الثمار بالنسبة لنبات الذرة وكانت أعلى المتوسطات للنباتات للمزروعة من بذور كبيرة الحجم و أقلها للنباتات المزروعة من بذور صغيرة الحجم . قدمت النتائج كمتوسطات القراءات على معدل الانبات والانبات النهائى ونمو النبات، أجرى التحليل الاحصائى على النتائج، ودونت الفروق المعنوية فى الجداول كما هو مبين. Abstract Seed size had an important effect on rate and final germination in Zea mays and Soya bean. Also seed size effected growth in these plants. Zea mays and Soya bean plants were selected for this study for their economical importance as source of food for human and animals.This study was carried out in laboratory as well in the field. The effect of different temperatures was deter mined on rate and final germination in both seeds used. Also effect of light on seed germination was tested. The results revealed that there is big effect of seed size on germination and subsequent growth of plants used. Where larger seeds gave better rate and final germination, there was better growth in plants formed from larger seeds. The best temperature for germination is 25ْc for the two types of plants used. Light had little promoting effect on rate and final germination of seeds used .Seed germination determinted in the soil under field conditions. The results obtained agreed with laboratory results but in Soya bean, it was found better germination from small seeds. This is may be due to seed coat being weaker and thinner in small seeds than big seeds. Different categories of growth was measured as plant length, fresh weight leaf weight dry weight etc. The results were statistically analysed and discussed.Different Growth categories were determined. These were better in plants originated from large seeds than small seeds. We can classify our results as increasing the size and weight of seed gave better results in germination, growth and length of plants, fresh weight and dry weight.
كميلة سالم خليفة السويح (2012)

Abstract In practice, most SoCs are multiprocessor systems-on-chips (MPSoCs) because it is too difficult to design a complex system-on-chip without making use of multiple CPUs. MPSoCs are the latest picture of very large scale integration (VLSI) technology. The architecture of the system is generally tailored to the application rather than being a general-purpose chip. This in turn enforces designers to move beyond logic design into advanced computer architecture and parallel processing. In such architectures, cores are integrated via a custom or commercial interconnection network with a controller, timing and a function interface to the external world. Current state-of-the-art SoCs already embeds typical sub-systems such as digital signal processors (DSP), RAM, ROM, MPEG cores.The main goal of this thesis is to design an efficient switch for Fat-tree interconnection networks. In addition a useful survey study for interconnection networks architectures, technologies and routing algorithms was provided. The survey included in some details commonly used switching methods and virtual channel arrangements. The proposed switch structure has been validated by a software model.A set of algorithms and procedures have been developed to facilitate the switch functionality. Those procedures include the control of transmission of the packets from switch input buffer to switch output buffer and transferring packets from switch output buffer to neighboring switch input buffer. While the input/output link controllers take care of buffer assignments to flits (packet) and deals with buffer organization. More over, the algorithms include (i) the routing algorithm which is the least common ancestor routing algorithm, (ii) arbitration algorithm that based on round-robin technique.Therefore in this thesis we have proved the correctness of the functionality of the proposed switch in software model that have been written in C++ language. The obtained simulation results of the switch functionality in fat-tree of 16 nodes definitely declare the correctness of the proposed arbitration scheme as well as showing the efficiency of the routing algorithm. Finally, we can say that the fat-tree interconnection network is very good candidate to implement future NoC connectivity for current and future multiprocessor systems-on-chips (MPSoCs) designs due to its modular, flexible and regular structured design. In turn, these features are suitable as well for VLSI realizations.
أسماء شعبان العصار (2010)

Abstract The permittivities and dielectric losses of 2-Piperedone, -Caprolactam, 2-Azacyclooctanone and 2-Azacyclononanone have been studied in chloroform solutions. They have been measured using Q meter at frequency range 150KHz to 15MHz.Both 2-Piperedone and -Caprolactam solutions were studied at concentration range 0.05 to 0.25M and over temperatures range of -10 to 45 and. The dielectric studies of 2-Azacyclooctanone solutions cover a concentration range 0.05 to 0.125M and over temperature range of -10 to 45, while that of 2-Azacyclononanone solutions were studied at concentration range 0.01 to 0.075M and over temperature range of -10 to 45. The permittivities at higher concentrated solutions up to 1.5M of 2-Pipere-done, -Caprolactam and 2-Azacyclononanone were also measured at 2MHz using dipole meter DM01 over the temperature rang -10 to 45.The static permittivities for the four systems were discussed as the affect concentration, temperature and the number of CH2 group in the cyclic amides. All show normal behaviour except that the CH2 does not show clear affect. Single relaxation process were observed for the studied compound in the chloroform solutions ( =10-9 sec). All cases, the presence of a relaxation process was established at frequencies higher than used here. These relaxation processes were discussed in terms of their relation to concentration and the number of CH2 group. The dielectric activation energies were calculated using Eyring equation. The obtained values were discussed also in terms of concentration affect. A dependence of on concentration was observed. The dipole moments for the four studied compounds in solutions were evaluated using of Cole-Cole a semicircle plots, which considered to be associated with the relaxation process and other dipole moments were evaluated using =. This was assigned as an apparent dipole moment. All these dipole moments were discussed in terms of concentration and temperature affect. The obtained dipole moments in all studied case were much larger than those expected for planer dimers association. So they assigned to the presence of dimers and trimer or tetramers association in the studied solutions.Kirkwood correlation factor for the studied systems were calculated and discussed as a function of concentration. All values of g are less than unity and were assigned to a cyclic association form.
لطفية صادق حسن المجدوب (2010)