نتایج جستجو برای: stress relaxation

تعداد نتایج: 509692  

2003
LA Pawlow PM O’Neil RJ Malcolm

BACKGROUND: Night eating syndrome (NES) is characterized by a lack of appetite in the morning, consumption of 50% or more of daily food intake after 6:00 p.m., and difficulty falling and/or staying asleep. It has been associated with stress and with poor results at attempts to lose weight. OBJECTIVE: The purpose of this study was to determine whether a relaxation intervention (Abbreviated Progr...

Journal: :Mechanics of Materials 2021

The viscoelastic properties of Pd20Pt20Cu20Ni20P20 high-entropy metallic glass were probed by dynamic mechanical spectroscopy and stress relaxation. experimental evolution can be characterized the empirical Kohlrausch-Williams-Watts function during tensile relaxation measurement. We develop a linear model able to describe whole process in wide range temperatures. takes into account microstructu...

Journal: :International Journal of Geomechanics 2021

This paper presents an experimental investigation on the loading-relaxation behaviors of reconstituted shear-zone soils through drained triaxial tests. A multistage approach is adopted to perform this test. The test aims study two main issues: influence relaxation mechanical response during reloading; and strain rates, loading increments, time characteristics. results indicate that stress-relax...

Journal: :journal of biomedical physics and engineering 0
h ashrafi department of mechanical engineering, k. n. toosi university of technology m shariyat department of mechanical engineering, k. n. toosi university of technology

introduction: nano-indentation has recently been employed as a powerful tool for determining the mechanical properties of biological tissues on nano and micro scales. a majority of soft biological tissues such as ligaments and tendons exhibit viscoelastic or time-dependent behaviors. the constitutive characterization of soft tissues is among very important subjects in clinical medicine and espe...

2013
Brandon W. Peterson Henny C. van der Mei Jelmer Sjollema Henk J. Busscher Prashant K. Sharma

UNLABELLED Bacteria in the biofilm mode of growth are protected against chemical and mechanical stresses. Biofilms are composed, for the most part, of extracellular polymeric substances (EPSs). The extracellular matrix is composed of different chemical constituents, such as proteins, polysaccharides, and extracellular DNA (eDNA). Here we aimed to identify the roles of different matrix constitue...

A Jafarzadeh , A Rahimdel , AR Sayadi , R Vazirinejad , SM Yassini ,

Background: Multiple sclerosis (MS) is one of the most common chronic diseases of the central nervous system. The aim of this study was to determine the effectiveness of psychological training combined‎ with gradual muscular stress relaxation technique on QOL of patients with MS. Materials and Methods: This triple-blind, controlled, clinical trial was conducted on 60 patients with MS who...

Introduction: In military environments, due to the particular sensitivity and existing risks, stress and mental pressure are more prevalent, and therefore, the employed personnel is at risk of mental disorders, such as depression. Mental disorders of military personnel increase psychological stress in their spouses, which require the use of appropriate interventions to be controlled. Objectives...

Journal: :Cardiovascular research 2003
Christy Lynn M Cooke Sandra T Davidge

OBJECTIVE Oxidative stress has increasingly been implicated in the development and progression of many vascular diseases. Previous work from our laboratory indicated that peroxynitrite alters vasoactive pathways in endothelial cells, which could potentially reduce vascular relaxation. To test this hypothesis in vivo, we utilized an animal model of endogenous oxidative stress, the CuZn superoxid...

Journal: :Journal of adolescence 2012
Megan M Foret Matthew Scult Marilyn Wilcher Rana Chudnofsky Laura Malloy Nicole Hasheminejad Elyse R Park

Academic and societal pressures result in U.S. high school students feeling stressed. Stress management and relaxation interventions may help students increase resiliency to stress and overall well-being. The objectives of this study were to examine the feasibility (enrollment, participation and acceptability) and potential effectiveness (changes in perceived stress, anxiety, self-esteem, healt...

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