نتایج جستجو برای: lifting magnet

تعداد نتایج: 31425  

Journal: :razavi international journal of medicine 0
mohammad hosein ebrahimzadeh orthopedic research center, department of orthopedic surgery, mashhad university of medical sciences, mashhad, ir iran hamid farzadfar orthopedic research center, department of orthopedic surgery, mashhad university of medical sciences, mashhad, ir iran hami ashraf department of research and education, razavi hospital, mashhad, ir iran gholam reza khoshsima orthopedic research center, department of orthopedic surgery, mashhad university of medical sciences, mashhad, ir iran ali birjandinejad orthopedic research center, department of orthopedic surgery, mashhad university of medical sciences, mashhad, ir iran; orthopedic research center, department of orthopedic surgery, mashhad university of medical sciences, mashhad, ir iran. tel: +98-5138523300, fax: +98-5138549234

conclusions we found the magnetic field assistant device to be an accurate, radiation-independent jig for close passing of guide wire after close reduction of femoral fracture. it can reduce the need for radiation during placement of guide wire for closed intramedullary nailing of the long bones. more studies are required to improve and evaluate the technique and equipment. results outcomes of ...

A 2D analytical method for magnetic vector potential calculation in inner rotor surface mounted and surface inset permanent magnet machines considering slotting effects, magnetization orientation and winding layout has been proposed in this paper. The analytical method is based on the resolution of Laplace and Poisson equations as well as Maxwell equation in quasi- Cartesian coordinate by using...

2015
Iwan Budihardjo Stephen Vardeman S. Keith Adams Timothy Van Voorhis

The lifting task is the major activity contributing to the risk of lower back injur}. The purpose of this study was to examine the mechanical stresses on the lower back during manual lifting and to analxze how people adapt to the stresses. This purpose was accomplished by approaching the mechanical stresses on the lower back from three different perspectives. The effects of manual lifting tasks...

2014
P Paul FM Kuijer Jos HAM Verbeek Bart Visser Leo AM Elders Nico Van Roden Marion ER Van den Wittenboer Marian Lebbink Alex Burdorf Carel TJ Hulshof

We developed an evidence-based practice guideline to support occupational safety and health (OSH) professionals in assessing the risk due to lifting and in selecting effective preventive measures for low back pain (LBP) in the Netherlands. The guideline was developed at the request of the Dutch government by a project team of experts and OSH professionals in lifting and work-related LBP. The re...

2013
Kasey O. Greenland Andrew S. Merryweather Donald S. Bloswick

BACKGROUND To determine the influence of lifting speed and type on peak and cumulative back compressive force (BCF) and shoulder moment (SM) loads during symmetric lifting. Another aim of the study was to compare static and dynamic lifting models. METHODS Ten male participants performed a floor-to-shoulder, floor-to-waist, and waist-to-shoulder lift at three different speeds [slow (0.34 m/s),...

Journal: :Journal of biomechanics 2015
A E Riley T D Craig N K Sharma S A Billinger S E Wilson

As torso flexion and repetitive lifting are known risk factors for low back pain and injury, it is important to investigate lifting techniques that might reduce injury during repetitive lifting. By normalizing lumbar posture to a subject's range of motion (ROM), as a function of torso flexion, this research examined when subjects approached their range of motion limits during dynamic lifting ta...

2015
Jiahong Song Xingda Qu Chun-Hsien Chen

Falls are a leading cause of occupational injuries and fatalities. A substantial proportion of occupational falls results from loss of postural stability. Load lifting perturbs postural stability, and thus is often associated with an increased incidence of falls. Although aged people are at higher fall risks, few studies have examined age effects on postural stability during lifting. Therefore,...

Journal: :CoRR 2011
Yuxin Deng Wenjie Du

Many behavioural equivalences or preorders for probabilistic processes involve a lifting operation that turns a relation on states into a relation on distributions of states. We show that several existing proposals for lifting relations can be reconciled to be different presentations of essentially the same lifting operation. More interestingly, this lifting operation nicely corresponds to the ...

2007
Septimiu Crivei Nanqing Ding

We consider a generalization of lifting modules relative to a class A of modules and a proper class E of short exact sequences of modules. These modules will be called E-A-lifting. We establish characterizations of modules with the property that every direct sum of copies of them is E-A-lifting. 2000 Mathematics Subject Classification: 16S90, 16D80.

Journal: :Clinical biomechanics 2002
Christian Larivière Denis Gagnon Patrick Loisel

OBJECTIVE To evaluate if chronic low back pain patients perform manual material handling tasks differently from control subjects. DESIGN Comparative study using a repeated measures design. BACKGROUND No study evaluated the lifting technique of back pain patients relative to control subjects during free style lifting and lowering tasks. Previous findings suggest that lowering would be more h...

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