البحث — المستودع الرقمي العراقي

نتائج البحث: 89 من أصل 89

قياس جرعات الاشعة السينية في عيادات طب الاسنان في محافظة البصرة باستخدام تقنية التالق الحراري == Measurement of X-Ray dose in dental clinics in Basra Governorate using thermoluminescence technique

اسم المؤلف: منال كاظم خابر

اسم المشرف: رياض جاسب ابو الهيل

الموضوع العام: علوم الفيزياء

السنة: 2025

الموضوع الدقيق: علوم الفيزياء

الدرجة: ماجستير

الجامعة: جامعة البصرة - كلية التربية للعلوم الصرفة - قسم الفيزياء

اللغة: العربية

مكان الجامعة: البصرة

اسم المؤلف: ماجد عبد الله ناطق

اسم المشرف: جنان مجيد المخ | جبار منصور خلف

الموضوع العام: علوم الفيزياء

السنة: 2019

الموضوع الدقيق: فيزياء الالكترونيات

الدرجة: دكتوراه

الجامعة: جامعة البصرة - كلية التربية للعلوم الصرفة - قسم الفيزياء

اللغة: الانكليزية

مكان الجامعة: البصرة

الصفحات الاولى:

الملخص:

المصادر:

دراسة نظرية في التاثيرات البرمية الحرارية للنقطة الكمية في مجال مغناطيسي == Theoretical Study in the Thermospin Effects for the Quantum Dot in a Magnetic Field

اسم المؤلف: ريمان جمال جاسم

اسم المشرف: جنان مجيد المخ

الموضوع العام: علوم الفيزياء

السنة: 2017

الموضوع الدقيق: الفيزياء

الدرجة: ماجستير

الجامعة: جامعة البصرة - كلية التربية للعلوم الصرفة - قسم الفيزياء

اللغة: العربية

مكان الجامعة: البصرة

الصفحات الاولى:

تقييم اداء تصاميم جديدة لسخان الماء الشمسي في مدينة البصرة30.5°N == Evaluation of new designs of solar water heater in Basrah city 30.5° N

اسم المؤلف: كوثر كاظم منخي

اسم المشرف: نوري حسين نور الهاشمي | جاسم مهدي الاسدي

الموضوع العام: علوم الفيزياء

السنة: 2015

الموضوع الدقيق: فيزياء الطاقة الشمسية

الدرجة: دكتوراه

الجامعة: جامعة البصرة - كلية التربية للعلوم الصرفة - قسم الفيزياء

اللغة: العربية

مكان الجامعة: البصرة

الصفحات الاولى:

المستخلص: The main goal of the current study is the benefit of solar energy as the origin of any renewable energy for producing a hot water through multiple solar collectors each one with overall capacity about 26 liter so that, these collectors arranged in sequential order within the construction of the house without affecting the artistic aspects of the house. These collectors will capable of providing the house the needs of hot water for domestics use especially during the winter season. It will reduce the amount of energy such as electricity and or kerosene or any other source of energy that usually used in Basrah.The present study is included the design and manufacture of seven models of solar collectors. The tools that have used into manufactured of these collectors are some cheap materials that are available in Basrah markets. These models are differ from each other by some aspects with additions properties. The thermal performance and efficiency have a test and then choose the best one in order to use it in four different modern designs of solar heaters.the thermal performance of the manufactured heaters models are tested by calculate the amount of hot water supply under difference weathers conditions in the city of Basrah, which sorts as a large abundance of solar radiation. It also test two types of arrangement of difference parts of heaters. The practical test has been proven the advantage of linking hot water reservoir tank with cold water and then linking the whole system with the hot water tank. This arrangement will allow of gradual warming of the water, which allows the consumer get the hot water directly from the system and not from the reservoir. This study include what is called a feedback arrangement system in order to increase the benefit from solar radiation. In this case, the hot water will recycle to allow for moreexposure to solar radiation repeatedly, that in the case of non - use or the case of little use.All the experiment Steps carried out on the roof of the department of physics building's in the college of education for pure Sciences, Basrah university in the northern city of Basrah, located at latitude 30.50 N and longitude 47.80 E during the winter season 2013 - 2014. Al thought this winter characterized by abundant of rain and clouds the models No.5 shows very good results interm of high temperature of hot water and the amount of it. The temperature was reach (900 C). In addition the model No.4 which depend on the technique of feedback idea shows a good result interm of the amount of hot water produce which reach (146 liter) at a temperature about (500 C) with in only five hours starting at 10 : 00 am until the 2 : 00 pm.In order to develop the optimum dimensional measurements of the solar collectors a mathematical model was developed to predict the output temperature of hot water from the solar collectors or from the radiator in general for different dimensions. This model is working successfully and achieved data that in comparable with our experimental ones. The experimental results have been analyzed theoretically to compare the performance of all solar collectors of the heaters, in different weather conditions and in a same time.