نتایج جستجو برای: دمپر mr
تعداد نتایج: 65022 فیلتر نتایج به سال:
In this research, the effect of shape parameters such as number of magnet wire turns, spools, thickness of the gap, and pole length in a Magneto-rheological (MR) fluid damper is analytically investigated and the optimization of these parameters is done with response surface method (RSM) which is combined Neuro-Fuzzy method and Particle Swarm Optimization (PSO) algorithm. Since the electro-magne...
In this paper, optimal design of hybrid low damping base isolation and magnetorheological (MR) damper has been studied. Optimal hybrid base isolation system has been designed to minimize the maximum base drift of low damping base isolation system where for solving the optimization problem, genetic algorithm (GA) has been used. In design procedure the maximum acceleration of the structure has ...
background coagulase-negative staphylococci (cons) are opportunistic pathogens. methicillin resistance is common in cons and may play an important role as reservoir of staphylococcal cassette chromosome mec (sccmec) for staphylococcus aureus. objectives the aim of this study was to determine molecular characteristics of nasal carriage of methicillin-resistant coagulase negative staphylococci am...
Background: Complications of national program vaccination have great importance, because widespread use of vaccines and expanded age range of vaccinees increases the percentage of side effects. Present study was performed for evaluating the complications of national measles and rubella vaccination in Hamedan province. Materials and methods: This cross-sectional descriptive study was done from...
in this study the catalytic dehydrogenation of ethylbenzene to styrene was investigated in a simulated tubular sodalite membrane reactor. the high quality microporous sodalite membrane was synthesized by direct hydrothermal method and characterized by single gas permeation measurements. the performance of the prepared membrane showed high potential for application in a dehydrogenation membrane ...
برای بیان رفتار غیرخطی میراگرهای MR بعنوان ابزارهای تثبیت شدهی نیمه فعال در کنترل ارتعاشات، مدلهای مختلفی ارائه شده که در دو عرصه محاسبات سخت و نرم قابل دستهبندی هستند. اما تنها برخی قادرند از ویژگیهای هیستریک و بشدت دینامیکی میراگرهای MR بصورت مستقیم و معکوس، که یک خصیصهی اصلی کنترلی است، بخوبی تقلید کنند؛ بطور دقیقتر، انتخاب یک مدل باکیفیت و معکوس پذیر نقش مهمی در کنترل نیمه فعال ایفا...
Background & Aim: Rubella is an infectious viral disease with a worldwide distribution. Infection during early pregnancy may cause fetal death or congenital rubella syndrome(CRS). The high risk of CRS is found in countries with high susceptibility rates among women of child bearing age. Expanded program of vaccination has increased vaccine coverage and exerted a substantial impact on the re...
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