نتایج جستجو برای: lifting techniques

تعداد نتایج: 640002  

Journal: :journal of research in health sciences 0
mojtaba mirakhorlo mahmood reza azghani sedighe kahrizi

background : lifting methods, including standing stance and techniques have wide effects on spine loading and stability. previous studies explored lifting techniques in many biomechanical terms and documented changes in muscular and postural response of body as a function of techniques .however, the impact of standing stance and lifting technique on human musculoskeletal had not been investigat...

Introduction and Aim: Manual handling of loads is a complex dynamic task that involves the upper and lower limbs. Manual handling of loads in sports and daily activities can expose people to unfavorable physical conditions and lead to injury. The study aimed to compare the electrical activity and co-contraction of selected lower limb muscles during manual load lifting with three different techn...

Journal: :مدیریت صنعتی 0
عالیه کاظمی استادیار مدیریت صنعتی، دانشکده مدیریت، دانشگاه تهران، تهران، ایران محمد رضا مهرگان استاد مدیریت صنعتی، دانشکده مدیریت، دانشگاه تهران، تهران، ایران حامد شکوری گنجوی دانشیار دانشگاه تهران، گروه مهندسی صنایع، تهران، ایران

this research presents a mathematical model for oil and gas optimal allocation to different sectors in iran using operations research techniques. sectors are residential and commercial, transportation, industries, agriculture, exports, injection to oil reservoirs and power plans as a secondary energy producer. optimal allocation of energy resources to end-uses from 2011 to 2021 has been done us...

Journal: :iranian journal of otorhinolaryngology 0
mohammad reza vahidi otorhinolaryngology research center, shahid sadoughi university of medical sciences, yazd, iran. abolfazl mollasadeghi department of occupational medicine, shahid sadoughi university of medical sciences, yazd, iran. honeyeh shahbazian otorhinolaryngology research center, shahid sadoughi university of medical sciences, yazd, iran. nasim behniafard otorhinolaryngology research center, shahid sadoughi university of medical sciences, yazd, iran. mohammad hossein dadgarnia otorhinolaryngology research center, shahid sadoughi university of medical sciences, yazd, iran.

introduction: in order to achieve a higher success rate for tympanoplasty, different techniques have been developed, and a wide variety of grafting materials have been developed. one of the techniques currently receiving considerable attention involves not lifting the remaining of eardrum from the malleus and embedding the graft underneath in order to repair the eardrum correctly in its origina...

Journal: :Journal of Ophthalmic and Vision Research 2020

Journal: :Math. Program. 1999
Zonghao Gu George L. Nemhauser Martin W. P. Savelsbergh

We investigate strong inequalities for mixed 0-1 integer programs derived from flow cover inequalities. Flow cover inequalities are usually not facet defining and need to be lifted to obtain stronger inequalities. However, because of the sequential nature of the standard lifting techniques and the complexity of the optimization problems that have to be solved to obtain lifting coefficients, lif...

Journal: :Ergonomics 2012
P P F M Kuijer S H van Oostrom K Duijzer J H van Dieën

UNLABELLED It is unclear whether the maximum acceptable weight of lift (MAWL), a common psychophysical method, reflects joint kinetics when different lifting techniques are employed. In a within-participants study (n = 12), participants performed three lifting techniques--free style, stoop and squat lifting from knee to waist level--using the same dynamic functional capacity evaluation lifting ...

Introduction: In order to achieve a higher success rate for tympanoplasty, different techniques have been developed, and a wide variety of grafting materials have been developed. One of the techniques currently receiving considerable attention involves not lifting the remaining of eardrum from the malleus and embedding the graft underneath in order to repair the eardrum correctly in its origina...

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