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learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...
introruction khawf in(iran)-herat and mazaresharif and shirkhan bandar in (afghanistan)-dushanbe in (tajikistan)_(kirgizstan)-kashghar in(china) project railway network is under construction that it is as a significant corridor for revitalizing silk road corridor in the region .at the present there are three different gauge in the region central asia with 1,520 mm gauge and turkey-islamic repu...
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In this paper, a useful classification of all Lie subalgebras of a given Lie algebraup to an inner automorphism is presented. This method can be regarded as animportant connection between differential geometry and algebra and has many applications in different fields of mathematics. After main results, we have applied this procedure for classifying the Lie subalgebras of some examples of Lie al...
هدف از انجام این مطالعه ، بررسی اثر ros درون سلولی اسپرم بر روی پارامترهای کلاسیک ، شکست (df) dna، تغییرات پتانسیل غشا میتوکندریmmp) )، مرگ سلولی ( (apoptosisبا استفاده از تکنیک فلوسایتومتری و ارتباط آن با میزان لقاح و مورفولوژی جنین ها در مردان نابارور کاندید درمان تزریق درون سیتوپلاسمی (icsi) بود. بدین منظور 28 نمونه منی افراد normospermic و 62 نمونه منی بیماران کاندید icsi از زوج های نابارور...
Introduction: Citation analysis is a suitable way to help us to identify research trends within a specific topic. The purpose of this study was to identify the 100 most cited articles in the field of dentistry published over the past 67 years. Methods: A comprehensive list of the most cited articles in dentistry was compiled using ISI Web of Science. The characteristics including number of cita...
background: screening rates for colorectal cancer (crc) are increasing nationwide including tennessee (tn); however, their up‑to‑date status is unknown. the objective of this study is to determine the trends and characteristics of tn adults who are up‑to‑date status with crc screening during 2002‑2008. methods: we examined data from the tn behavioral risk factor surveillance system for 2002, 20...
abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...
section{introduction} the concept of {sl cartan geometry} appeared at the beginning of the twentieth century, when {e}lie cartan was working on the so-called {sl equivalence problem}, the aim of which is to determine whether two given geometric structures can be mapped bijectively onto each other by some diffeomorphism. this problem can be considered in many different contexts, such as ...
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