نتایج جستجو برای: e khaldun have made valuable conscious efforts in methodology

تعداد نتایج: 17650315  

Journal: :مرتع و آبخیزداری 0
بهزاد رایگانی استادیار دانشکدة علوم محیط زیست و منابع طبیعی، دانشگاه محیط زیست غلامرضا زهتابیان استاد دانشکدة منابع طبیعی، دانشگاه تهران حسین آذرنیوند دانشیار دانشکدة منابع طبیعی، دانشگاه تهران سید کاظم علوی پناه استاد دانشکدة جغرافیا، دانشگاه تهران سید جمال الدین خواجه الدین استاد دانشکدة منابع طبیعی، دانشگاه صنعتی اصفهان

soil is one of the main non-renewable natural resources in the world and its degradation is considered as a major threat around the globe because it reduces the productivity capacity of soil variability and makes the environment instable in the long turn. soil degradation has three different aspects: physical, chemical and biological degradation. if any of these aspects of the destruction of th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1374

we have devided the thesis in to five chapters. the first recollects facts from purely algebraic theory of jordan algebras and also basic properties of jb and jb* - algebras which are needed in the sequel. in the second chapter we extend to jb* - algebras, a classical result due to cleveland [8]. this result shows shows the weakness of jb* - norm topology on a jb* - algebera. in chapter three, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده علوم 1391

nanotechnology is a general term which is related with field of all advanced science term that generally predicates with all modern technologies which consider nanoscales. improvement in the quality of products by adding some nanoparticles and study of their behavior in the presence of these nanoparticles have been obtained in many researches. on the other hand numerous demands for sowing ...

Abdolhamid Sameni, Ali Chamkalani

The problem of slow drilling in deep shale formations occurs worldwide causing significant expenses to the oil industry. Bit balling which is widely considered as the main cause of poor bit performance in shales, especially deep shales, is being drilled with water-based mud. Therefore, efforts have been made to develop a model to diagnose drilling effectivity. Hence, we arrived at graphical cor...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده هنر 1391

now-a-days graphic design plays a major role in influencing culture, society, business, and customers, in such a way that one could look upon every individual as a potential customer. graphic designers seek to identify customers needs and find an intelligent solution for them. correct identification and understanding of those needs is the first step towards achieving ones goals. marketing knowh...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده فیزیک 1392

in the first part of this thesis we explored wetting and its dynamics for small droplets. first, we showed how a simple feature of water droplets on a surface, i.e. laplace pressure, can be exploited to build a micropump. we investigated capillary pumping in microchannels both experimentally and numerically. putting two droplets of different sizes at the in/outlet of a microchannel, will ge...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1391

simplification universal as a universal feature of translation means translated texts tend to use simpler language than original texts in the same language and it can be critically investigated through common concepts: type/token ratio, lexical density, and mean sentence length. although steps have been taken to test this hypothesis in various text types in different linguistic communities, in ...

Journal: :Biotechnology and bioengineering 2005
Henry Lin George N Bennett Ka-Yiu San

Most reported efforts to enhance production of the industrially valuable specialty chemical succinate have been done under anaerobic conditions, where E. coli undergoes mixed-acid fermentation. These efforts have often been hampered by the limitations of NADH availability, poor cell growth, and slow production. An aerobic succinate production system was strategically designed that allows E. col...

Journal: :ادب فارسی 0
ناصر رحیمی عضو هیئت علمی گروه زبان و ادبیات فارسی دانشگاه سمنان رحیمه ادهم دانشجوی دکترای زبان و ادبیات فارسی دانشگاه سمنان

abu hafs al-haddad was one of the masters and founders of malāmatiyya (or malamatis) in nishapur in the 9th century (about 3rd hijri century). through a deep study of ancient sources, in present article, we have rendered some valuable details about his life and family, some of the aspects that reflect the main lines of his thoughts have been made clear, on one hand; and the principles of malāma...

پایان نامه :0 1374

the research questions were as follows: 1. is there any relationship between the students concious awareness of the form and implications of the conjuncations and their improvement in using appropriate conjunctions? 2. does students knowledge of the from and the implications of the conjunctions help them to produce more coherent writings. 3. does a comparison between english conjunctions and th...

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