نتایج جستجو برای: chair

تعداد نتایج: 15160  

2013
Gregory Ely Shuchin Aeron Zemin Zhang Jason Gejie Liu Ning Hao

Shuchin Aeron Department of Electrical Engineering

Journal: :iranian rehabilitation journal 0
kanupriya arora sector-c,vasant kunj,new delhi-11070. majumi noohu jamia nagar, new delhi-11025.

objectives: wheelchairs are the prime mobility aid of persons with spinal cord injuries. manual wheelchair propulsion puts a lot of demand on the cardiopulmonary as well as the skeletal system. the main purpose of the study was to compare the effects of both arm ergometry training and progressive resistance exercise training of upper limbs on resting heart rate and distance covered during wheel...

2015
Jeffrey R. Cram

The electromyographic activity of the paraspinal muscles at four levels were examined to investigate the effects of chair sitting on muscle activation patterns and muscle fatigue. The Balans, Nada-Chair Back Up, and Standard Office Chair were studied. Twenty four subjects were asked to engage in a seated writing task for 10 minutes for each of three chairs. Prior to the first writing period and...

Journal: :international journal of occupational and environment medicine 0
o haddad department of industrial engineering, sharif university of technology, tehran, iran ma sanjari biomechanics lab., rehabilitation research center, tehran university of medical sciences, tehran, iran a amirfazli department of mechanical engineering, sharif university of technology, tehran, iran r narimani department of mechanical engineering, sharif university of technology, tehran, iran m parnianpour department of information and industrial engineering, hanyang university, ansan, republic of korea

background: most dentists complain of musculoskeletal disorders which can be caused by prolonged static posture, lack of suitable rest and other physical and psychological problems. objective: we evaluated a chair with a new ergonomic design which incorporated forward leaning chest and arm supports. methods: the chair was evaluated in the laboratory during task simulation and emg analysis on 12...

Journal: :journal of physical & theoretical chemistry 2015
issa yavari hassan kabiri-fard

ab initio calculations at hf/6-31g* level of theory for geometry optimization and mp2/6-31g*//hf/6-31g*for total energy calculation are reported for z-cyclooctene (1). the most favorable conformation of 1 is theunsymmetric boat-chair (1-bc) geometry. potential energy profiles for two different boat-chair/boat-chairinterconversion processes were calculated. the process via a chair transition sta...

Journal: :Academic Questions 2020

Journal: :Nature 2009

Journal: :Proceedings of the Royal Society of Medicine 1948

Journal: :The Iowa Review 2013

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