نتایج جستجو برای: physical and environmental conditions today
تعداد نتایج: 16979278 فیلتر نتایج به سال:
technology has had many influences on the iranian society in different eras. today, information and telecommunication technologies have revolutionized the basic structures of society and a new network society has been propagated inside the traditional and semi-modern context. in countries like iran, which are in the process of modernization, a chaos deriving from the transition period is observ...
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...
Educational spaces play an important role in enhancing learning productivity levels of society people as the most important places to human train. Considering the cost, time and energy spending on these spaces, trying to design efficient and optimized environment is a necessity. Achieving efficient environments requires changing environmental criteria so that they can have a positive impact on ...
Congressman Udall, members of the Committee on Science, members of the audience, ladies and gentlemen, I am glad to be here with you today. I am here to discuss the state of empirical research on the impact of educational facilities on student behavior, attitudes and performance. What we know comes from research from a broad array of disciplines ranging from social and environmental psychology,...
the challenge for today's researchers and practitioners agriculture, increase productivity while maintaining or improving environmental quality (including water, soil and air) to be ¬ rapid population growth and increasing demand for food, researchers are continuing to study the management of high yielding varieties suitable for growing to escape environmental stresses in dry conditions an...
fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...
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