8393 research outputs found
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الكلسترول
No full textالكلسترولأن مادة الكلسترول شديدة الأهمية للجسم لدرجة إنه يفرزها بنفسه ؛بدون الكلسترول لن تحدث جميع الوظائف وبدون حدوث الوظائف سيفنى الجنس البشري.
لكن كل شئ إذا زاد عن حده أصبح مضرآ ،وأن تحظا بصحه جيدة هدف يسعى إليه الجميع لذلك علينا إتباع النظام الغذائي المناسب وأن يكون متوازن وصح
التدهور البيئى والدلائل والمؤشرات (ما هي الورقة الرابحة
No full textالتدهور البيئى والدلائل والمؤشرات
(ما هي الورقة الرابحةما زال التدهور البيئي الذي يسود العالم مستمر ومتزايد المتمثل في النقاط التي ذكرت إضافة الي التصحر حيث نجد إن الإبل هي الورقة الرابحة في إستغلال البيئات الصحراوية والجافة
اسباب تذبذب اسعار الحيوانات الحية واللحوم خلال 2009ـــــ 2012
No full textاسباب تذبذب اسعار الحيوانات الحية واللحوم خلال 2009ـــــ 2012ـ خلال 2009ـــــ7/2011 يلاحظ تذبذب بسيط فى اسعار الحيوانات ويعزى هذا للاسباب المذكورة اعلاه عدا اثر الانفصال ،اما خلال 2012 حصلت زيادة كبيرة فى اعداد الحيوانات والسبب الرئيسي هوانفصال الجنوب.
ـ تذبذب اسعار الاعلاف بسبب ارتفاع الضرائب التى يعانى منها التجاراثر بصورة كبيره على اسعار الحيوانات .
ـ تحول المصدرين الى شراء الحيوانات من مناطق الإنتاج بدلا من مناطق الاستهلاك وهذا ايضا اثرعلى اسعار الحيوانا
Evaluation of the Operation of Locally Manufactured Seed Drill
No full textEvaluation of the Operation of Locally Manufactured Seed DrillThe operation of a seed drill was evaluated and tested in the field and the problem associated with its operation and clearly defined
The Effect of Studying medical sciences on student’s hygiene
No full textThe Effect of Studying medical sciences on student’s hygiene• This study was conducted to find out if there is a relation between studying medical sciences and good hygiene.
• It was conducted among the medicine, engineering and computer colleges in university of Khartoum and UMST, Khartoum, Sudan.
Methods:
• This is an analytical cross-sectional study
• A sample of 184 was selected by numbering, 92 medical and 92 non-medical
• Data collected by questionnaires and analyzed using SPSS 1Oth version.
Results:
• The study showed that MS show better hygiene compared to NON-MS.
Conclusion:
• Think this difference is due to the knowledge gained by MS from their study of medical sciences, because they go through a lot of information about most of infectious diseases, their way of transmission, and the factors facilitating their spread. Also they know the fact that good personal hygiene is an important factor in the prevention of many of infectious diseases. But still, MS hygiene is not as good as expected of a group with this great knowledge.
Recommendations:
• Another study on this issue (effect of studying medical….) should be conduct, but we have to increase the number of participants to thousands maybe with the inclusion of other sectors of the community including medical and non-medical officers to find out the extension of the effect of medical knowledge in hygiene.
• I recommend that, courses about good hygiene and its importance in the prevention of serious health problems should be taken by both medical and non medical students
HYBRID WIND-SOLAR ELECTRIC POWER SYSTEM
No full textIn this project was proposed a hybrid system that combines wind and solar energy and have a storage unit along with a backup diesel generator, which is a good combination to use for a small network to ensure a steady and continuous supply for the load at all times and under different weather conditions. This project aims to construct this kind of hybrid system for an isolated small network and supply the load with either wind energy, solar energy or battery unit with standby diesel generator and the coordination of these different resources is done by the microprocessor as the brain of the system and outputs to relays that connect the desired energy source.The hybrid system is a very useful system in the electrical power generation for the isolated small networks and for the grid tied systems, it combines two or more power sources to work concurrently or when just one is available according to a pre specified scenario. In this project we proposed a hybrid system that combines wind and solar energy and have a storage unit along with a backup diesel generator, which is a good combination to use for a small network to ensure a steady and continuous supply for the load at all times and under different weather conditions. This project aims to construct this kind of hybrid system for an isolated small network and supply the load with either wind energy, solar energy or battery unit with standby diesel generator and the coordination of these different resources is done by the microprocessor as the brain of the system and outputs to relays that connect the desired energy source. The system was simulated for the different scenarios that could happen in cases of one unit is out and others in or vice versa and the impact that this would have in the stability of the small network. The project objectives have been met using the software simulations and the results was satisfactory and analyzed for the instability and control system design
المكتبة الوطنية ودورها في حفظ التراث القومي ( دراسة حالة المكتبة الوطنية السودانية
No full textالمكتبة الوطنية ودورها في حفظ التراث القومي ( دراسة حالة المكتبة الوطنية السوداني