نتایج جستجو برای: slow strain rate test

تعداد نتایج: 1944117  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان همدان - دانشکده ادبیات و علوم انسانی 1390

abstract this study is an attempt to determine the effect of nano- technology education on science lesson for fifth grade in primary school in the city of kermanshah. this research is experimental and is conducted in the from of pre-test and post- test for the control group. an achievement test was administered to determine the rate of learning in the students. the research is an applied one. ...

Journal: :Physical review. E 2017
J S Langer

The thermodynamic dislocation theory presented in previous papers is used here to describe shear-banding instabilities. Central ingredients of the theory are a thermodynamically defined effective configurational temperature and a formula for the plastic strain rate determined by thermally activated depinning of entangled dislocations. This plastic strain rate is extremely sensitive to variation...

Journal: :تحقیقات نظام سلامت 0
ایوب قنبری سرتنگ دانشجوی کارشناسی ارشد، گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران حبیب اله دهقان استادیار، گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

background : in many jobs, individuals are exposed to thermal stress, and thus, evaluation of heat stress is necessary. this study was conducted with the purpose of investigating the relationship of perceptual strain index (pesi) with other heat indexes under hot laboratory conditions. methods: this empirical-experimental and cross-sectional study was performed in 5 different temperatures (21 º...

Journal: :Journal of Materials Research 2008

Journal: :International journal of speech-language pathology 2014
Magnus Haake Kristina Hansson Agneta Gulz Susanne Schötz Birgitta Sahlén

The aim of this study was to examine the effects of speech rate on children's performance on a widely used language comprehension test, the Test for Reception of Grammar, version 2 (TROG'2), and to explore how test performance interacts with task difficulty and with the child's working memory capacity. Participants were 102 typically-developing Swedish-speaking children randomly assigned to one...

2001
Morel Thomas. Quinn

Introduction: Nonphysiologic mechanical loading of articular cartilage, as can arise in obesity or traumatic injury, may be a contributing factor in the development of degenerative diseases of cartilage. Previous investigations [1] have suggested that relatively rapid (strain rate ~0.5 s) and very slow (strain rate ~0.00005 s) ramp loads applied to osteochondral explants can give rise to differ...

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