نتایج جستجو برای: loading force

تعداد نتایج: 260188  

Journal: :Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine 2014
L G Coles S Gheduzzi A W Miles

The patellofemoral joint is a common site of pain and failure following total knee arthroplasty. A contributory factor may be adverse patellofemoral biomechanics. Cadaveric investigations are commonly used to assess the biomechanics of the joint, but are associated with high inter-specimen variability and often cannot be carried out at physiological levels of loading. This study aimed to evalua...

Journal: :Journal of structural biology 2003
Frank Wilco Bartels Birgit Baumgarth Dario Anselmetti Robert Ros Anke Becker

Specific protein-DNA interaction is fundamental for all aspects of gene transcription. We focus on a regulatory DNA-binding protein in the Gram-negative soil bacterium Sinorhizobium meliloti 2011, which is capable of fixing molecular nitrogen in a symbiotic interaction with alfalfa plants. The ExpG protein plays a central role in regulation of the biosynthesis of the exopolysaccharide galactogl...

Journal: :Prosthetics and orthotics international 2011
Barbara Silver-Thorn Angela Herrmann Thomas Current John McGuire

BACKGROUND Those who experience lower extremity weakness or paralysis following a stroke often exhibit gait deviations caused by the inability to completely lift their foot during swing. An ankle-foot orthosis (AFO) is commonly prescribed for individuals post stroke with this mobility impairment. STUDY DESIGN Randomized controlled trial. OBJECTIVES To determine whether significant differenc...

2014
Katrin Beyer S. Petry M. Tondelli

Unreinforced masonry (URM) structures are known to be rather vulnerable to seismic loading. Modern URM buildings with reinforced concrete (RC) slabs might, however, have an acceptable seismic performance for regions of low to moderate seismicity. In particular in countries of moderate seismicity it is often difficult to demonstrate the seismic safety of modern URM buildings by means of force-ba...

Journal: :Acta of bioengineering and biomechanics 2008
Janusz Plominski Zbigniew Watral Krzysztof Kwiatkowski

The influence of cycling loading force on the substrate made of frozen bone grafts was investigated. Three layers of bone grafts were compacted in a spherical model of hip joint acetabulum and then subjected to a sinusoidal loading force. For each layer a series of N = 30 loading cycles were performed. The least impacted grafts were located in the upper part of the acetabulum, close to its open...

2017
Wing-Kai Lam Jaejin Ryue Ki-Kwang Lee Sang-Kyoon Park Jason Tak-Man Cheung Jiseon Ryu

BACKGROUND Lunge is one frequently executed movement in badminton and involves a unique sagittal footstrike angle of more than 40 degrees at initial ground contact compared with other manoeuvres. This study examined if the shoe heel curvature design of a badminton shoe would influence shoe-ground kinematics, ground reaction forces, and knee moments during lunge. METHODS Eleven elite and fifte...

1998
Ari Lukkarinen Kimmo Kaski

Mechanical properties of electrorheological uids under various dynamical loading conditions have been studied using a computer simulation model. The model assumes electrostatic point-dipole interaction between particles with or without multipolar corrections and the interaction with the base uid due to viscous laminar ow is described with Stokes drag. The mechanical loading is introduced as con...

2017
Sam Van Rossom Colin Robert Smith Lianne Zevenbergen Darryl Gerard Thelen Benedicte Vanwanseele Dieter Van Assche Ilse Jonkers

Cartilage is responsive to the loading imposed during cyclic routine activities. However, the local relation between cartilage in terms of thickness distribution and biochemical composition and the local contact pressure during walking has not been established. The objective of this study was to evaluate the relation between cartilage thickness, proteoglycan and collagen concentration in the kn...

2002
S. O. Kucheyev J. E. Bradby J. S. Williams C. Jagadish M. V. Swain

The deformation behavior of bulk ZnO single crystals is studied by a combination of spherical nanoindentation and atomic force microscopy. Results show that ZnO exhibits plastic deformation for relatively low loads ~*4–13 mN with an ;4.2 mm radius spherical indenter!. Interestingly, the elastic–plastic deformation transition threshold depends on the loading rate, with faster loading resulting, ...

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