نتایج جستجو برای: strain controlled

تعداد نتایج: 594910  

Journal: :Scandinavian journal of work, environment & health 2000
K A Karjalainen A O Malmivaara M W van Tulder R P Roine S Jauhiainen H O Hurri B W Koes

The objective of this study was to determine the effectiveness of biopsychosocial rehabilitation for upper-limb repetitive-strain injuries among working-age adults. Studies were identified from electronic bibliographic databases, reference checks, and consultations with experts in rehabilitation. Four blinded reviewers selected randomized controlled and controlled trials. Two experts evaluated ...

2012
J. F. Molinari S. Levy R. Radovitzky

The fragmentation of a brittle plate subjected to dynamic biaxial loading is investigated via numerical simulations. The aim is to extend our understanding of the dynamic processes affecting fragment size distributions. A scalable computational framework based on a hybrid cohesive zone model description of fracture and a discontinuous Galerkin formulation is employed. This enables large-scale s...

Journal: :Physical chemistry chemical physics : PCCP 2016
H H Huang Xiaofeng Fan David J Singh Hong Chen Q Jiang W T Zheng

Using first-principles DFT calculations, the pathway and the energy barrier of phase transition between 2H and 1T' have been investigated for MoTe2 and WTe2 monolayers. The Phase transition is controlled by the simultaneous movement of metal atoms and Te atoms in their plane without the intermediate phase 1T. The energy barrier (less than 0.9 eV per formula cell) is not so high that the phase t...

2009
Jean-Noël Roux

Systematic numerical simulations of model dense granular materials in monotonous, quasistatic deformation reveal the existence of two different régimes. In the first one, the macroscopic strains stem from the deformation of contacts. The motion can be calculated by purely static means, without inertia, stress controlled or strain rate controlled simulations yield identical smooth rheological cu...

Journal: :Journal of bacteriology 1999
M M Nakano Y Zhu K Haga H Yoshikawa A L Sonenshein P Zuber

The Bacillus subtilis ResD-ResE two-component signal transduction system is essential for aerobic and anaerobic respiration. A spontaneous suppressor mutant that expresses ResD-controlled genes and grows anaerobically in the absence of the ResE histidine kinase was isolated. In addition, aerobic expression of ResD-controlled genes in the suppressed strain was constitutive and occurred at a much...

2008
V. Sverdlov S. Selberherr

A splitting between equivalent valleys larger than the spin splitting was recently reported in a gate confined electron system in thin Si films grown on SiGe substrate [1]. This degeneracy lifting reduces scattering and improves the coherence time. The valley splitting larger than the spin splitting opens a way to build spin qubits, which makes silicon-based quantum devices promising for future...

2014
Suzhi Li Xiangdong Ding Jie Ren Xavier Moya Ju Li Jun Sun Ekhard K. H. Salje

Large reversible changes of thermal conductivity are induced by mechanical stress, and the corresponding device is a key element for phononics applications. We show that the thermal conductivity κ of ferroic twinned thin films can be reversibly controlled by strain. Nonequilibrium molecular dynamics simulations reveal that thermal conductivity decreases linearly with the number of twin boundari...

Journal: :Ultrasound in medicine & biology 2009
Congxian Jia Ragnar Olafsson Kang Kim Theodore J Kolias Jonathan M Rubin William F Weitzel Russell S Witte Sheng-Wen Huang Michael S Richards Cheri X Deng Matthew O'Donnell

Ultrasound strain imaging using 2-D speckle tracking has been proposed to quantitatively assess changes in myocardial contractility caused by ischemia. Its performance must be demonstrated in a controlled model system as a step toward routine clinical application. In this study, a well-controlled 2-D cardiac elasticity imaging technique was developed using two coplanar and orthogonal linear pro...

2009
M. Mathews R. Jansen G. Rijnders J. C. Lodder H. A. Blank

While magnetic nanowires generally have a preferential magnetization direction along the wire axis to minimize magnetostatic energy, it is shown here for epitaxial magnetic oxide nanowires that substrate-induced strain can be used to tailor the magnetic easy axis in any direction. La0.67Sr0.33MnO3 LSMO nanowires were prepared by pulsed laser deposition of LSMO thin films on NdGaO3 NGO substrate...

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