في هذا البحث تم دراسة تأثير متغير الدوران والمتغيرات الأخرى على التدفق التمعجي لسائل سوتربي في قناة غير متماثلة مائلة تحتوي على وسط مسامي مع انتقال الحرارة. في وجود الدوران، تم تطوير النمذجة الرياضية باستخدام المعادلات الاساسية القائمة على نموذج سائل سوتربي. في تحليل التدفق، يتم استخدام افتراضات مثل تقريب طول الموجة الطويلة وانخفاض عدد رينولدز. تم حل المعادلة التفاضلية الاعتيادية غير الخطية الناتجة تحليلياً باستخدام طريقة الاضطراب. يتم تحليل تأثيرات رقم كراشوف، ورقم هارتمان، ورقم رينولد، ورقم فرود، ومعلمة هال، ورقم دارسي، والمجال المغناطيسي، ومعلمة سائل سوتربي، وتحليل نقل الحرارة على وظيفة التدفق وتدرج الضغط بيانياً. باستخدام برنامج ماثيماتيكا، تم حساب النتائج العددية. تم اكتشاف أن حجم الفقاعات يتناقص مع زيادة بعض المعلمات ، بينما يتناسب تدرج الضغط تناسب طردي مع غالبية المعلمات.
تكمن أهمية البحث من الاستفادة من تمرينات الخاصة بمساعدة استعمال أي جهاز تدريبي مثل استعمال جهاز (Vertimax) فإِنَّ هذهِ التدريبات تساعد في تطوير التحمل الخاص وفقًا لما يتطور من قدرات بدنية باستعمال هذا الجهاز، ومن هنا برزت مشكلة البحث انه من المهم للاعب ان يعمل على الروافع الجسم للحصول على اداء افضل في عملية الرمي والحصول على افضل انجاز لهذة الفعالية باستعمال جهاز تدريبي جديد حيث يسلط مقاومات متعددة في ان وا
... Show MoreThe ability of beans (Phaseolus vulgaris L.) to uptake three pharmaceuticals (diclofenac, mefenamic acid and metronidazole) from two types of soil (clay and sandy soil) was investigated in this study to explore the human exposure to these pharmaceuticals via the consumption of beans. A pot experiment was conducted with beans plants which were grown in two types of soil for six weeks under controlled conditions. During the experiment period, the soil pore water was collected weekly and the concentrations of the test compounds in soil pore water as well as in plant organs (roots, stems and leaves) were weekly determined.
The results showed that the studied pharmaceuticals were detected in all plant tissues; their concentration
The modern business environment Witness tremendous.These developments result from globalization of markets and economic and technological openness. Those developments resulting a heightened competition between economic units and higher the costs of their products and lower their functional characteristics. They do not take into account the response to the requirements of customers. This matter commit it to search for scientific methods to help it to cope with the happening changes and improve its competitive position, The current study acquired its importance by providing significance through by applicable integrated framework to reduce the costs of products. This reduction should be without compromising their quality by using the integr
... Show Moreهدفت الدراسة إلى التعرف على إدارة الحكمة والازدهار التنظيمي وفاعلية القرارات الاستراتيجية لدى اعضاء مجالس كليات التربية البدنية وعلوم الرياضة في جامعات العراق ، والتعرف على العلاقة بين ادارة الحكمة والازدهار التنظيمي وفاعلية القرارات الاستراتيجية لدى اعضاء مجالس كليات التربية البدنية وعلوم الرياضة في جامعات العراق ، التعرف على الفروق وفقا لمتغير اللقب العلمي (استاذ- استاذ مساعد) وسنوات الخدمة لأعضاء مجا
... Show MoreThe study examines Julia Alvarez's role as a Dominican American author, poet, and essayist. Despite being born in New York City in 1950, she was raised in the Dominican Republic by a family with Dominican heritage. Her residence in her ancestral homeland significantly influenced her subsequent literary works. Upon her father's implication in a conspiracy against Dominican President, he departed from the Dominican Republic. Alvarez encountered the challenge of the English language. They were compelled to acquire proficiency in English due to the prevailing perception that anyone who spoke a language other than English were deemed "un-American" during that period. Alvarez recounted her initial encounters in the United States and the subseque
... Show MoreThe contribution rate of tax revenues in the federal budget is very small compared to the rate of contribution of oil revenues and this leads to negative repercussions on the Iraqi economy and the budget becomes a prisoner of high and low oil prices, and this is a problem that needs to be studied to know the extent of the impact of economic and political decisions on the size of tax revenue and The research goal is determined in studying the effect of amending the Unified Law No (26) of 2019 on the size of annual tax revenues . &
... Show MoreThe performance measures and traditional methods used in management accounting is no longer able to provide convenient to evaluate the performance of economic units in the modern manufacturing environment information، and so this information is more important and feasibility must be Mistohat of all the company's activities and functions، and it is a problem Find the inadequacy of information management accounting that contribute to meet the needs of the upper levels of management to cope with the problems resulting from the increased size and complexity of the business، and lack of management accounting information and methods used in the performance evaluation، which reflected negatively on the value chain activities and then on the
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