نتایج جستجو برای: nonlocal and length scale parameters

تعداد نتایج: 16955907  

A Farajpour M Goodarzi, M Khooran M Mohammadi,

In the present work, the free vibration behavior of rectangular graphene sheet under shear in-plane load is studied. Nonlocal elasticity theory has been implemented to study the vibration analysis of orthotropic single-layered graphene sheets (SLGSs) subjected to shear in-plane load. The SLGSs is embedded on a viscoelastic medium which is simulated as a Visco-Pasternak foundation. Using the pri...

2013
Tai-Ping Chang Quey-Jen Yeh

This paper adopts stochastic FEM to study the statistical dynamic behaviors of nonlinear vibration of the fluid-conveying double-walled carbon nanotubes (DWCNTs) under a moving load by considering the effects of the geometric nonlinearity and the nonlinearity of van der Waals (vdW) force. The Young’s modulus of elasticity of the DWCNTs is considered as stochastic with respect to the position to...

Journal: :Physical review letters 2004
D Beckmann H B Weber H V Löhneysen

We have measured the nonlocal resistance of aluminum-iron spin-valve structures fabricated by e-beam lithography and shadow evaporation. The sample geometry consists of an aluminum bar with two or more ferromagnetic wires forming point contacts to the aluminum at varying distances from each other. In the normal state of aluminum, we observe a spin-valve signal which allows us to control the rel...

Journal: :تحقیقات دامپزشکی 0
جلال بختیاری گروه علوم درمانگاهی دانشکده دامپزشکی دانشگاه تهران سارا مکرم گروه علوم درمانگاهی دانشکده دامپزشکی دانشگاه تهران علیرضا خلج گروه جراحی دانشکده پزشکی دانشگاه شاهد تهران داوود شریفی گروه علوم درمانگاهی دانشکده دامپزشکی دانشگاه تهران جواد اشرفی هلان گروه پاتوبیولوژی آموزشکده دامپزشکی دانشگاه تبریز آذین توکلی گروه علوم درمانگاهی دانشکده دامپزشکی دانشگاه تهران

laparoscopic and open ovariohysterectomy were compared for the following parameters: surgical time, incision length, suture number, saturation of oxyhemoglobin (spo2), heart rate, complications,cbc findings, melbourne pain scale (mps) and gross pathology. mps pain scores were evaluated using mann-whitney u test. other parameters were evaluated using studen's t test. there were no significa...

The present work mainly studies the free vibration of circular magneto-electro-elastic (MEE) nano-plates based on the Kirchhoff’s plate theory within the framework of nonlocal elasticity theory to account for the small scale effect. The MEE nano-plate studied here is considered to be fully clamped and subjected to the external magnetic and electric potentials. Using nonlocal constitutive relati...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1390

monumental changes occurring on a daily basis have altered the world into a global village of expanding technology and shrinking geography in which preparing language learners for intercultural communication seems to be a sine qua non for modern language education. employing a cross-sectional design in its first phase, this study investigated the intercultural sensitivity and language proficien...

2015
D. Lock K. R. Rusimova T. L. Pan R. E. Palmer P. A. Sloan

The dynamics of hot electrons are central to understanding the properties of many electronic devices. But their ultra-short lifetime, typically 100 fs or less, and correspondingly short transport length-scale in the nanometre range constrain real-space investigations. Here we report variable temperature and voltage measurements of the nonlocal manipulation of adsorbed molecules on the Si(111)-7...

Journal: :Mathematics 2023

Coated functionally graded materials (FGMs) are used in several industrial structures such as turbine blades, cutting tools, and aircraft engines. Given the need for analytical numerical analysis of these complex structures, a mathematical model tricoated FG is presented first time this paper. The objective work was to analyze analytically buckling problem unidirectional (1D), bidirectional (2D...

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