نتایج جستجو برای: marivan region
تعداد نتایج: 538085 فیلتر نتایج به سال:
background: one of europe’s most well-developed industrial regions is found in the republic of bulgaria. the industrialization of the region has a big impact on air pollution. thermal power plant “maritza east” (the largest of its kind in southeastern europe), the army training range, machine manufacturers, household heating and high volume of automobile traffic are all major sources of polluti...
asia accommodates half of the population of the world, which is young and still growing. infrastructures are rapidly developing and its gaps with higher income countries are narrowing. despite the fact that science in asia pacific region is expanding fast, medical toxicology is one of the scientific fields which are still lacking in this region (1). establishment of asia pacific association of ...
this study used quantifying factors affecting desertification based on the iranian model of desertification potentialassessment (imdpa) to assess the current status of desertification in bordekhun region, iran. bordekhun region has anarea of 214.11 km2 and is located near the city of daiyer in boushehr province. first, a working unit map of the regionwas selected as the basic map for evaluation...
accurate estimation of evaporation is important for design, planning and operation of water systems. in arid zones where water resources are scarce, the estimation of this loss becomes more interesting in the planning and management of irrigation practices. this paper investigates the ability of artificial neural networks (anns) technique to improve the accuracy of daily evaporation estimation....
میکروآران ای ها یک کلاس از آران ای های کوچک غیرکدشونده تنظیمی هستند که اهمیت بسیار زیادی در خاموش کردن ژن های پست-ترنسکریپشنال دارند. آن ها اکثراً با چسبیدن به بخش 3’utr( three prime untranslated region) مسنجر آران ای های هدف، میزان ژن ها را به یکی از دو روش بریدن یا مهار کردن تنظیم می کنند. دانشمندان در ابتدا اهداف میکرو آر ان ای ها را با انجام آزمایش مشخص می کردند. با این وجود، به خاطر پرهزینه...
روشهای عددی مانند روش هم محلی، گالرکین و تربیع برای حل معادلات انتگرالی فردهلم در نهایت به حل یک دستگاه معادلات خطی یا غیر خطی جبری منجر می شوند که حل این دستگاهها اغلب از نظر زمانی و دقت در محاسبه جواب با مشکل مواجه می شوند. در این رساله روش هایی ترکیبی را بر مبنای الگوریتم ابتکاری الکترومغناطیس و روش gmres را برای غلبه بر این قبیل از مشکلات در حل این دستگاه معادلات ارائه نموده ایم. الگوریتم...
Social capital is a multidimensional and multilayered concept, frequently discussed in recent years in the fields of social science, economics and political science. Social capital is collective communications and social networks, facilitating the sense of cooperation and trust among the individuals in a society. Many sociologists and social science scholars believe that social capital is an im...
Background: Students with learning disabilities often encounter problems with their lessons due to the disorder in reading and writing and face to some challenging situation such as auditory and visual memory problem, sustaining attention, inhibiting impulses, motor coordination, auditory and visual perception and discrimination. The purpose of this study was to investigate the effectiveness of...
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