many reports that appeared during the last 20 years have shown that atmospheric pollution causes serious damage to human health and to environment. electricity generation from fuel fossil is one of the major sources of pollution and considerable share of this damage. the price of electricity in iran, as in many other countries also, includes only the production of private costs and ignores any ...

Work posture is determined by interdependence between work stand design, the necessity to perform given activities, and the anthropometric dimensions of the worker, but it also depends on individual preferences. The aim of the study was to compare the musculoskeletal load of the right upper extremity under conditions of imposed (standard) upper limb position and subjectively chosen ones, and to...

Background: A requirement for a soldier is to be able to move long distances under short time with heavy external load, creating high requirements on stability in the lower extremities. Weakness in gluteus medius muscle (Gmed) which is one of the main muscles for hip stability have been associated with several forms of injury in the lower extremities and particularly in the tibiofemoral joint. ...

Rectangular plate is one typical structure with wild application in engineering, and the force vibration basis for analysis of sound radiation plate. In this work, numerical simulation conducted rectangular plate, influence external load also studied. Numerical results show that, will resonate under at certain driven frequency, it’s strictly related to structural modal frequencies. Structural r...

There is limited investigation of the interaction between motor unit recruitment and rate coding for modulating force during standing or responding to external perturbations. Fifty-seven motor units were recorded from the medial gastrocnemius muscle with intramuscular electrodes in response to external perturbations in standing. Anteriorly directed perturbations were generated by applying loads...

UNLABELLED It is becoming clear that the bacterial flagellar motor output is important not only for bacterial locomotion but also for mediating the transition from liquid to surface living. The output of the flagellar motor changes with the mechanical load placed on it by the external environment: at a higher load, the motor runs more slowly and produces higher torque. Here we show that the num...