این پایان نامه در سه فصل نوشته شده است، در فصل اول تعاریف و قضایای لازم برای فصل های دوم و سوم بیان شده است. فصل دوم به بررسی عملگرهای ترکیبی وزن دار روی فضاهای توابع اندازه پذیر اختصاصداده شده است. فصل سوم که در واقع اصلی ترین فصل پایان نامه است به بیان نرم اساسی عملگر ترکیبی روی فضاهای ارلیز می پردازد. این پایان نامه بر اساس مقالات زیر تدوین گردیده است: • m. r. jabarzadeh the essential...

In this study, the effect of experimental diets containing different levels of carbohydrate and niacin on growth indices, carcass composition and heamolymph biochemical parameters of juvenile whiteleg shrimp (Litopenaeus vannamei) were investigated for 45 days. Shrimp with mean initial weight of 5±0.33 g were reared in 300 liter tanks with 8 treatments. Feeding was performed 4 times a day using...

with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...

Arbuscular mycorrhizal fungi (AMF) are widespread endosymbionts in terrestrial ecosystems and their exudates have important effects on soil properties. A greenhouse experiment was conducted with six AMF treatments including four exotic species inoculums (Funneliformis mosseae ,Claroideoglomus claroideum  and Rhizophagus irregularis and a mixed isolate of three species), one mixed native AMF spe...

Mycorrhizal fungus colonization of roots may modify plant metal acquisition. In order to study the role of external hyphae of mycorrhizal fungi in metals transferring, the root and hyphal growth zone were separated by 30 µm nylon meshes. Plants were inoculated with G. mosseae and G. intraradices and grown in the root compartment. Six combinations of metals (400 mg of Zn, 25 mg of Cd, 400 mg of ...