This study focuses on the biodegradation of oxymatrine insecticide by some soil fungi isolated from four agriculture stations. The results showed that the highest degradation rate 94.66% was recorded by Ulocladium sp. at 10 days and A. niger recorded the lowest degradation rate 45.86%, while at 20 days Ulocladium sp. also showed the highest degradation rate 94.98% and the lowest degradation rate reached to 82.49% with A.niger. The mix (Exerohilum sp.+Ulocladium sp.) recorded the highest degradation rate of oxymatrine insecticide 90.22%, 88.51%, 85.34% at 4, 8 and 12 ppm.The use of mixed isolates enhanced the biodegradation process. There is no study of oxymatrine biodegradation so this study is the first of its kind in the region which can be used as a baseline study for incoming studies
تعد التجارب المختبرية من أهم الوسائل التي تمكن من فهم خصائص المواد الكيميائية وسلوكها، كما إنها الوسيلة الوحيدة لتحضير المركبات الكيميائية المختلفة. وقد أدى تطور التكنولوجيا في الوقت الحاضر إلى إستخدام أدوات وأجهزة قياس في المختبر مكنت من زيادة دقة نتائج التجارب وسرعة الحصول عليها. أن تفعيل المختبر وإجراء الأنشطة العملية يمكن أن تحقق عدة أمور منها : 1- تُنمي في الطالب مهارات التفكير العلمي ( الملاحظ
... Show MoreThe research intended to take into consideration the phenomena of employing the temporary employees through the business organization increasingly, which has become one of the most apparent features of the contemporary strategy of the human resources management. It depends on the analytical descrptive Approach to meet the research problem which has been focalized around the dispute praising regarding the phenomena of the temporary employment and its dimensions and challenges which can be faced by the management of human resources as a result .The importance of the research is represented as one of rare research which confronts to the phenomena of the temporary employment in the Iraqi business environment. The most prominent objec
... Show Moreتنشر الولايات المتحدة قوات في جميع دول القارة الافريقية بهدف السيطرة الكاملة عليها وتحقيق اهدافها ومصالحها
Proverbs represent the morality and behavior of man in the environment in which he lives, they express the virtues of authentic , benign and urges the ethics as it is characterized by comprehensive over time and time as well as became rules imposed and accepted norms settled in the souls after the people gradually continued to import it through generations
In research it is an important phonemic change for the speaker to reach Ease and lightness ,wich is the kinetic follow-up , and we tried to collect the scattered matter in the various dialects.
it is studied with the ancient and modern Showing the occurrence of this term between both sides Then we clarified the phoneme explanation for this phenomenon
يهدف هذا البحث الى عرض رؤيا تشخصيه لمجتمع المعرفة في ظل اقتصاد المعرفة من خلال استعراض العديد من المفاهيم النظرية والعلاقة بينهم كمفهوم البيانات والمعلومات والمعرفة ومجتمع المعلومات والمعرفة, ومصادر المعرفة, والمراحل التطورية للتحول الى مجتمع المعرفة, ومن ثم استعراض الأبعاد الأساسية لمجتمع المعرفة, إضافة إلى الملامح الأساسية لاقتصاد المعرفة وخصائص ذلك الاقتصاد, ثم تناول البحث المورد المعرفي وعلاقته
... Show Moreيرجع تاريخ الاصلاحات الادارية إلى سبعينات القرن الماضي ،ولاسيما الندوة التي عقدت لبحث العوامل المؤثرة في انخفاض الانتاجية عام 1976، وعملية ترشيق الاجهزة الادارية للدولة عام 1987.
ان بحثنا الموسوم (نظام المعلومات المحاسبية ودوره في عملية اتخاذ القرارات) يتم عرضه في فرعين مترابطين، هما:
- المحاسبة نظام معلومات.
- الادارة صانعة للقرار.<
This research shows Ibn Battuta's approach in his book Ibn Battuta's Journey that is called "Tuhfet Al-Anzar fi Ghera'ib Al-Amsar wa Eaja'ib-Al-Asfar", which explore the urban aspects of shops, markets, palaces, houses, mosques, monasteries and other antiquities within its pages, whether in terms of the site or in terms of studying it and the plans that explained the basis for the art and architecture of these cities, the intellectual dimensions in their civilizational history are clarified