نتایج جستجو برای: mechanical load

تعداد نتایج: 375363  

2013
Dechao Kong Tiansheng Zheng Ming Zhang Daode Wang Shihao Du Xiang Li Jiahu Fang Xiaojian Cao

Mechanical stress has detrimental effects on cartilaginous endplate chondrocytes due to apoptosis in vivo and in vitro. In this study, we investigated the possible apoptosis signaling pathways induced by mechanical stress in cultured rat cervical endplate chondrocytes. Static mechanical load significantly reduced cell viability in a time- and load-dependent manner, as demonstrated by the Cell C...

A Ghorbanpour Arani, M Hashemian

In this paper, the nonlinear dynamic buckling of double-walled boron-nitride nanotube (DWBNNT) conveying viscous fluid is investigated based on Eringen's theory. BNNT is modeled as an Euler-Bernoulli beam and is subjected to combine mechanical, electrical and thermal loading. The effect of viscosity on fluid-BNNT interaction is considered based on Navier-Stokes relation. The van der Waals (vdW)...

Journal: :Proceedings of the National Academy of Sciences 1997

Journal: :American journal of physiology. Heart and circulatory physiology 2002
Kimimasa Tobita Elizabeth A Schroder Joseph P Tinney Jason B Garrison Bradley B Keller

Mechanical load influences embryonic ventricular growth, morphogenesis, and function. However, little is known about changes in regional passive ventricular properties during the development of altered mechanical loading conditions in the embryo. We tested the hypothesis that regional mechanical loads are a critical determinant of embryonic ventricular passive properties. We measured biaxial pa...

Journal: :Circulation research 2002
Elizabeth A Schroder Kimimasa Tobita Joseph P Tinney Jane K Foldes Bradley B Keller

Mechanical load regulates ventricular growth, function, and structure from the earliest stages of cardiac morphogenesis through senescence. Dramatic changes in cardiac form and function have been defined for developing cardiovascular systems, and changes in mechanical loading conditions can produce structural malformations such as left heart hypoplasia. To date, relatively little is known regar...

Journal: :Journal of applied physiology 2010
Adi Reich Stav Simsa Maziel Ziv Ashkenazi Efrat Monsonego Ornan

Enzymes from the matrix metalloproteinase (MMP) family play a crucial role in growth-plate vascularization and ossification via proteolytic cleavage and remodeling of the extracellular matrix. Their regulation in the growth plate is crucial for normal matrix assembly. Endochondral ossification, which takes place at the growth plates, is influenced by mechanical loading. Using an in vivo avian m...

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