نتایج جستجو برای: have very good performance
تعداد نتایج: 4252590 فیلتر نتایج به سال:
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
peace and national security protection and ironic solving of international conflicts become the preliminary foundation of the united nations charter and had been considered as the main responsibilities of the security council, after world war ii and the establishment of united nations organization. therefore, the security council enables to analyze every kind of conflicts and challenges which ...
هدف : هدف از این مطالعه تعیین میزان اثر بخشی تزریق کورتیکواستروییدها در بیماران دیابتی مبتلا به انگشت ماشه ای در بیمارستان های بوعلی و امیرالمومنین بوده است . روش مطالعه : این مطالعه به صورت یک بررسی مشاهده ای ،مداخله ای، توصیفی – تحلیلی و مقطعی انجام گرفته است . حجم نمونه مورد بررسی 53 نفر از بیماران مبتلا به انگشت ماشه ای در بیمارستان امیرالمومنین و بوعلی (1389-1388) بود که 11 نفر از این اف...
Since the time public-key cryptography was introduced by Diffie andHellman in 1976, numerous public-key algorithms have been proposed. Some of thesealgorithms are insecure and the others that seem secure, many are impractical, eitherthey have too large keys or the cipher text they produce is much longer than theplaintext. This paper focuses on efficient implementation and analysis of two mostpo...
Practice guidelines have proliferated in medicine but their impact on actual practice and outcomes is difficult, if not impossible, to quantify. Though guidelines are based largely on observational data and expert opinion, it is widely believed that adherence to them leads to improved outcomes. Data to support this belief simply does not exist. If guidelines are universally ignored, their impac...
When the body is running at fully immersed condition in viscous fluid, there are two components of resistance, i.e. frictional resistance and form drag. When it is near the free surface, the additional drag encountered to the body which is wave-making drag. This paper is presents the hydrodynamic performance of high-speed Unmanned Underwater Vehicle (UUV) in fully immersed condition. We did 100...
Academic performance has been particularly important in today's world and academic self-concept is one of the most important issues in school learning, which has attracted a lot of research implications. Academic self-concept indicate student perceptions or images of her own abilities regarding academic learning that impact on academic achievement, and at the same time it affected. Self-esteem ...
The development of high-performance thermal systems has increased interest in heat transfer enhancement techniques. The application of additives to heat transfer liquids is one of the noticeable effort to enhance heat transfer. In this paper two-dimensional unsteady incompressible nanofluid flow in a confined jet at the laminar flow regime is numerically investigated. The Mixture model is consi...
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