نتایج جستجو برای: apparent modulus of elasticity

تعداد نتایج: 21168990  

2011
Rafael Tobias MORETTI NETO Daniel Afonso HIRAMATSU Valdey SUEDAM Paulo César Rodrigues CONTI José Henrique RUBO

OBJECTIVES The complexity and heterogeneity of human bone, as well as ethical issues, most always hinder the performance of clinical trials. Thus, in vitro studies become an important source of information for the understanding of biomechanical events on implant-supported prostheses, although study results cannot be considered reliable unless validation studies are conducted. The purpose of thi...

Journal: :Hypertension 1999
D Liao D K Arnett H A Tyroler W A Riley L E Chambless M Szklo G Heiss

Decreased elasticity in large and medium-sized arteries has been postulated to be associated with cardiovascular diseases. We prospectively examined the relation between arterial elasticity and the development of hypertension over 6 years of follow-up in a cohort of 6992 normotensive men and women aged 45 to 64 years at baseline from the biracial, population-based Atherosclerosis Risk in Commun...

Journal: :The Israel Medical Association journal : IMAJ 2003
Mordehay Vaturi Yitzhak Beigel Yehuda Adler Mali Mansur Menachem Fainaru Alex Sagie

BACKGROUND Decreased elasticity of the aorta is associated with aging and several risk factors of atherosclerosis. The data regarding this phenomenon in patients with familial hypercholesterolemia are rather sparse. OBJECTIVES To evaluate non-invasively the elasticity of the proximal ascending aorta of 51 heterozygous FH patients compared to 42 normal age and gender-matched controls. METHOD...

2013
Lili Niu Yanling Zhang Ming Qian Long Meng Yang Xiao Yuanyuan Wang Xin Liu Rongqin Zheng Hairong Zheng

BACKGROUND Carotid intima-media thickness (IMT) and elasticity have been shown to be independent predictors of cardiovascular disease (CVD). Cardiovascular risk factors (CVRFs) includes hypertension, dyslipidemia, diabetes, overweight and smoking. The objective was to investigate whether the clustering of three or more components of CVRFs has a greater impact on carotid IMT and elasticity than ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1371

the effect of the presence of perforations on he stresses of a plate is a problem which is of great interest in structural design and in the mathemattical theory of elasticity. among the many hole patterns that are likely to require consideration is the ring of equally spaced circular holes. the present worke investigates stress & strain analysis of a thin isotropic circular plate containing a ...

Journal: :Research Papers Faculty of Materials Science and Technology Slovak University of Technology 2016

In this paper, the Ritz method has been employed to analyze the free in-plane vibration of heterogeneous (non-uniform) rectangular nanoplates corresponding to Eringen’s nonlocal elasticity theory. The non-uniformity is taken into account using combinations of linear and quadratic forms in the thickness, material density and Young’s modulus. Two-dimensional boundary characteristic orthogonal pol...

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