نتایج جستجو برای: based micro

تعداد نتایج: 3021755  

Journal: :transport phenomena in nano and micro scales 0
a. r. rahmati department of mechanical engineering, university of kashan, kashan, i. r.iran r. ehsani department of mechanical engineering, university of kashan, kashan, i. r.iran

because of its kinetic nature and computational advantages, the lattice boltzmann method (lbm) has been well accepted as a useful tool to simulate micro-scale flows. the slip boundary model plays a crucial role in the accuracy of solutions for micro-channel flow simulations. the most used slip boundary condition is the maxwell slip model. the results of maxwell slip model are affected by the ac...

In conventional power systems, frequency and voltage deviations are chosen as indexes for characterizing conventional power system security. While  in an autonomous micro grid with Electronically Interfaced Distributed Generation (EIDG), frequency and voltage deviations  against power and loads disturbances perfectly controlled by f-P and V-Q controller. Unlike conventional power syst...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک 1388

the world wide web becomes very popular recently and plays an influential role in english learning. by burgeoning role of source-based writing as partial fulfillment of tefl courses and vast use of the internet, lack of empirical studies to explore these areas is obvious. this study aimed to explore the effect of the amount of familiarity with the web (internet literacy) on junior english stude...

2005
Qiong Yang Dian Gong Xiaoou Tang

Currently, most of the feature extraction methods based on micropatterns are application oriented. The micro-patterns are intuitively userdesigned based on experience. Few works have built models of micro-patterns for feature extraction. In this paper, we propose a model-based feature extraction approach, which uses micro-structure modeling to design adaptive micro-patterns. We first model the ...

2011
Chi-Yuan Lee Chien-Hen Lin Yi-Man Lo

Micro reformers still face obstacles in minimizing their size, decreasing the concentration of CO, conversion efficiency and the feasibility of integrated fabrication with fuel cells. By using a micro temperature sensor fabricated on a stainless steel-based micro reformer, this work attempts to measure the inner temperature and increase the conversion efficiency. Micro temperature sensors on a ...

2008
Dae Jin Yun Tae Il Seo Dong Sam Park

For microfabrications of biochips with micro fluidic channels, a large number of microfabrication techniques based on silicon or glass-based Micro-Electro-Mechanical System (MEMS) technologies were proposed in the last decade. In recent years, for low cost and mass production, polymer-based microfabrication techniques by microinjection molding and micro hot embossing have been proposed. These t...

2014
R. K. Jain S. Majumder Bhaskar Ghosh Surajit Saha

This paper presents a new design of mobile micro manipulation system for robotic micro assembly where a compliant piezoelectric actuator based micro gripper is designed for handling the miniature parts. The compensation of misalignment during robotic peg-in-hole assembly is achieved by this compliant micro gripper because the piezoelectric actuator has capability of producing the displacement i...

G Pearce J Jelwan, M Chowdhry

One of the yet unresolved engineering problems is forecasting the creep lives of weldment in a pragmatic way with sufficient accuracy. There are number of obstacles to circumvent including: complex material behavior, lack of accurate knowledge about the creep material behavior specially about the heat affected zones (HAZ),accurate and multi-axial creep damage models, etc. In general, creep life...

2013
Jinghua Huang Jing Zhang Yangfan Li Zhepeng Lv

The increasing use of micro-blogs as marketing tools has increased the research attention on the usage and performance of enterprise micro-blogs. Based on research on information system (IS) usage and the resource-based view (RBV) theory, this study develops a model to measure the business value of enterprise micro-blogs. The model consists of metrics on micro-blog usage, micro-blog operational...

Journal: :emergency journal 0
reza hashemi department of internal medicine, shohadaye tajrish hospital, shahid beheshti university of medical sciences, tehran, iran alireza majidi department of emergency medicine, shohadaye tajrish hospital, shahid beheshti university of medical sciences, tehran, iran hassan motamed department of emergency medicine, ahvaz jundishapour university of medical sciences, ahvaz, iran afshin amini department of emergency medicine, imam hossein hospital, shahid beheshti university of medical sciences, tehran, iran fares najari department of forensic medicine, shahid beheshti university of medical sciences, tehran, iran ali tabatabaey department of emergency medicine, shahid beheshti hospital, qom university of medical sciences, qom, iran

introduction: erythrocyte sedimentation rate (esr) remains as one of the most reliable tests in clinical practices. yet its use is time consuming and requires a large blood sample. the aim of this study was assessing a faster and reliable method of esr estimation. methods: an esr estimation method was described and performed on 108 patients using capillary tube (micro esr) and capillary periphe...

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