نتایج جستجو برای: power injection system
تعداد نتایج: 2709958 فیلتر نتایج به سال:
وجود معمای امنیت و پایداری آن کشورها را متوجه منطقه، تهدیدات و بی ثباتی های موجود در آن کرده است. تسلط تهدید، رقابت، اختلاف و خصومت، رقابت های تسلیحاتی و اختلافات سیاسی و ائدولوژیک از موانع عمده ی شکل گیری امنیت پایدار در مناطق است. در این میان چرخه ی قدرت یکی از مهم ترین ویژگی های سیستم جهانی و منطقه ای است که تاثیر مستقیمی بر موضوع مذکور دارد. لازم به ذکر است، که انواع چرخه های قدرت، سبب شکل ...
چکیده ندارد.
Use of liquefied petroleum gas (LPG) in compression-ignition (C-I) engines has always been considered important in the diesel engineering field. This is due to its easy accessibility and good combustion characteristics. In this paper the application of LPG fuel along with diesel oil in a direct- injection automotive diesel engine is experimentally investigated. In order to convert the pure dies...
The main purposes of a transformerless grid-connected photovoltaic (PV) system consist of the reduction of leakage current, extraction of maximum power point (MPP), tracking of MPP (MPPT), controlling the active and reactive powers, and having the unity power factor. To achieve the above-mentioned aims, the following actions have been performed in this paper. First of all, a brief analysis of t...
In this study the performance and emissions characteristics of a heavy-duty, direct injection, Compression ignition (CI) engine which is specialized in agriculture, have been investigated experimentally. For this aim, the influence of injection timing, load, engine speed on power, brake specific fuel consumption (BSFC), peak pressure (PP), nitrogen oxides (NOx), carbon dioxide (CO2), Carbon mon...
We show that the performance of a streaming-potential based microfluidic energy conversion system can be strongly enhanced by the use of two phase flow. Injection of gas bubbles into a liquid-filled channel increases both the maximum output power and the energy conversion efficiency. In single-phase systems the internal conduction current induced by the streaming potential limits the output pow...
the effect of quinpirol and sulpiride on the brain activity waves in conscious and aneasthetized rat
brain's waves are produced by spontaneous activity of neurons. these waves are changed by neurotransmitters in the central nervous system (cns). concentration of these neurotransmitters can be changed by various drugs and total power of brain waves also increase or decrease by these drugs. in this research effect of quinpirol and sulpiride on the brain waves was investigated. male wistar r...
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