Investigation of enhanced double weight code in point to point access networks

© 2020 Published under licence by IOP Publishing Ltd. In this paper, an investigation and evaluation to enhanced double weight (EDW) code is performed, a new technique for code structuring and building using modified arithmetical model has been given for the code in place of employing previous technique based on Trial Inspections. Innovative design has been employed for the code into P2P networks using diverse weighted EDW code to be fitting into optical CDMA relevance applications. A new developed relation for EDW code is presented, the relation is based on studying and experimenting the effect of input transmission power with code weight, and the relation developed using numerical analysis method. This relation makes the estimation for the system input power needed more efficient. The results of the code has been explained by eye diagram and parametric illustrations from the simulated results. The result shows a magnificent performance of the code during high number of users and weight. On the other hand, the relation developed for power measurement helps to prevent power loss and consumption

Investigation the nonlinear optical properties of silver nanoparticles using femtosecond laser

© 2020 Published under licence by IOP Publishing Ltd. In this research, the fabrication of silver nanoparticles and experimental nonlinear response (NLO). The fabrication of the silver nanoparticles has been done using E-Beam evaporation on a glass substrate (Ag-NPs) and investigation of their nonlinear optical response (NLO). The silver nanoparticles was evaluated by optical spectrum (UV-Vis) that shows localized surface Plasmon band at 375 nm. The experiment shows the nonlinear absorption and nonlinear refraction effect of silver nanoparticles, the silver nanoparticles is analysed by Z-Scan technique using a femtoseconds laser with 800 nm wavelength. The result shows the nonlinear absorption (NLA) is at 4.8710-4cmW-1, while (NLR) is at 7.9410-9cmW-1

دراسة مقارنة لحمل مرتفع الشدة في بعض المتغيرات البايوكيميائية لعدائي المسافات القصيرة والطويلة لفئة دون سن (18) سنة

1- تحديد المستويات الطبيعية لبعض المتغيرات البيوكيميائية قبل الحمل لعدائي المسافات القصيرة والطويلة لمجموعة دون سن (18) سنة.2- التعرف على تأثير الحمل عالي الكثافة على بعض المتغيرات البيوكيميائية لعدائي المسافات القصيرة والطويلة لمجموعة دون سن (18) سنة.يفترض البحث:1-توجد فروق ذات دلالة إحصائية بين عدائي المسافات القصيرة والطويلة في تراكيز بعض المتغيرات البيوكيميائية قبل الحمل.2-توجد فروق ذات دلالة إحصائية بين عداءي المسافات القصيرة والطويلة في نتائج الاختبارات البعدية لتركيزات بعض المتغيرات البيوكيميائية بعد حمل تدريب عالي الكثافة.استخدمت الباحثة المنهج شبه التجريبي والسببي والمقارن لمدى ملاءمتها وطبيعة مشكلة البحث على عينة من عدائي المسافات القصيرة والطويلة لمجموعة من الشباب الذين تتراوح أعمارهم (17-18 سنة) متدربين في المدرسة المتخصصة. المواهب الرياضية لألعاب القوى بوزارة الشباب والرياضة للموسم الرياضي (2020 / م </jats:p

Influence of body type on the productive longevity of cows

The results of the measurements show that the cows of the irisome type reliably outperform the cows of the leptosome type in latitudinal measurements and chest girth (P≤0.001), they are stronger, have a higher live weight and the duration of productive use is higher by 0.94 lactation, resulting in lifelong productivity in cows of the iris type is 5274 kg higher. The total profit from milk production in cows of the iris type is higher by 137356 rubles than in cows of the leptosome type, and in cows of the mesosome type by 45703 rubles. The selection of cows of the iris type for the formation of the herd can lead to an increase in the productive life of cows by 286 days.&#x0D;  &#x0D;  </jats:p