Composites in extreme environments: Effects of high strain rate, humidity and temperature

Effects of strain rate and temperature on the mechanical properties of resin composites.

OBJECTIVE To evaluate the effects of strain rate and temperature on the mechanical properties of resin composite restorative materials (RCs) and to investigate the construction of temperature--strain rate equivalence 'master curves'. METHODS Four visible light-cured resin composite RCs, all of shade A3, were used: Heliomolar Radiopaque (HR) and Tetric Ceram (TC) (Ivoclar, Schaan, Liechtenstei...

the effects of collaborative strategic reading and direct instruction in persuasion on iranian second grade of high school students persuasive writing and attitudes

this study examined the effects of collaborative strategic reading and direct instruction in persuasion on iranian high school students persuasive writing and attitudes. students in three intact classes were assigned to one of three treatment conditions: collaborative strategic reading and direct instruction in persuasion or direct instruction in persuasion or a control group. treatment effects...

the effects of speech rate,prosodic features, and blurred speech on iranian efl learners listening comprehension

کلید واژه ها به زبان انگلیسی: effect of speech rate on listening comprehension, blurred speech,segmental and suprasegmental features,authentic speech,intelligibility, discrimination, omission, assimilation چکیده: سرعت مطالب شنیداری در کلام پیوسته بطور کلی همواره کابوسی بوده برای یادگیرنده های زبان دوم و بالاخص برای شنوندگان ایرانی. علی رغم عقل سلیم که کلام با سرعت کندتری فعالیتهای درک مطلب شن...

Influence of High Temperature and Humidity on Polymer Composites Used in Relining of Sewage

Heart rate and body temperature responses to extreme heat and humidity with and without electric fans.

Heart Rate and Body Temperature Responses to ExtremeHeat andHumidityWith andWithout Electric Fans Patz et al1 described the projected effects of more prolonged and severe heat waves on human health. A simple, low-cost cooling device is an electric fan. A Cochrane review2 concluded“noevidencecurrentlyexists supportingor refuting the use of electric fans during heatwaves” formortality andmorbidit...