نتایج جستجو برای: energy sources

تعداد نتایج: 922550  

The processes of transformation of the energy space, namely the impact of alternative energy resources on it, are characterized by changes in the national economy in general and in the energy market in particular. The results of the analysis confirmed the significant dependence of electricity production indicators on renewable sources and such factors as GDP, CO2 emissions, total electricity pr...

Journal: :Revista CAITITU - aproximando pesquisa ecológica e aplicação 2013

ژورنال: مسکن و محیط روستا 2019
Khanmohamadi, Ehsan, Mahravan, Abbas,

This paper evaluates the changes in the ecological footprint index in rural areas by applying the replacement of renewable energy sources to fossil fuels. Population growth, and consequently increased use of fossil fuels, has resulted in various environmental degradation including climate change, global warming, and melting of polar ice. Detailed scientific analysis show that the buildings cons...

Journal: :international journal of environmental research 2012
t. nasrabadi h.r. sharif vaghefi g.r. nabi bidhendi

due to shortage of precipitation and the spatial and periodical disparity of rainfalls, iran iscounted among the arid and semi-arid countries of the world, and therefore the water utilities have put thecontrol of consumption and efficient use of water high on their priorities. water consumption management isconsidered as a field of energy management, and the impacts of effective measure related...

Journal: :iranian journal of applied animal science 2015
m.f. khalid m. sarwar a.u. rehman m.a. shahzad n. mukhtar

protein and energy are the two major components of feed that influence performance of the growing and fattening lambs. provision of the quality of protein in the lamb’s diet does not only improve the animal performance but also ensures profitable animal production. different vegetable protein sources are used to formulate the rations for growing and fattening lambs. these protein sources differ...

In the present world, energy is indispensable for maintaining the comfort level and living standard of the human. On the other hand, the energy crisis is a major problem in most of the developing countries like Bangladesh. A possible reason is that, the decreasing level of conventional energy sources and the lack of initiatives for introducing the alternative sources of energy. Moreover, the in...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم زمین 1388

چکیده ندارد.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده صنایع و سیستمها 1385

در سال 1978 علینقی مشایخی یک مدل دینامیک سیستم برای اقتصاد ایران ساخت که توانایی شبیه سازی رفتار سیستم اقتصادی- اجتماعی کشور را داشت. این مدل که بر مبنای رفتار اقتصاد خرد ایجاد شده از ساختار قدرتمندی برخوردار است. این پایان نامه یک مدل دینامیک سیستم اقتصاد- انرژی، مبتنی بر مدل دینامیکی مشایخی ایجاد کرده است. مدل یاد شده، حلقه های بازخور موجود میان بخش انرژی و بخش های دیگر اقتصاد را در نظر می گ...

Journal: :بوم شناسی کشاورزی 0
ابوالفضل برومند محمد حسین آق خانی حسن صدرنیا

abstract the aim of this survey is to compare utilization systems (cooperative, private and governmental) methods of energy consumption in soybean production and the evaluation of energy inputs effect in yield of soybean in moghan. for this purpose, the information were collected from 54 private farmers, 14 cooperative members farmers and 14 agro-industry units by questionnaire method. the maxi...

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