نتایج جستجو برای: device performance

تعداد نتایج: 1635320  

Journal: :international journal of occupational hygiene 0
mohammad reza monazzam esmail pour department of occupational health engineering, school of public health, tehran university of medical sciences, tehran, iran hamed jalilian department of occupational health engineering, school of public health, iran university of medical sciences, tehran, iran kamran najafi department of occupational health engineering, school of public health, tehran university of medical sciences, tehran, iran seyed abolfazl zakerian department of occupational health engineering, school of public health, tehran university of medical sciences, tehran, iran

original article   one type of electromagnetic fields, based on frequency range, is extremely low frequency (elf) fields. there are lots of reports about measuring elf-magnetic field (mf) in substations, power plants, cities and etc. this study aimed to compare the difference between measurement of three-axis and single-axis probe mf meters. elf-mf was measured by tes-1394 mf tester (three-axis...

Journal: :Journal of Pressure Vessel Technology 2018

Journal: :Journal of Mathematical Sociology 2021

The inclination of individuals to improve their performance when it lags behind that others with whom they naturally compare themselves can be harnessed optimize the individuals’ effort in work and study. In a given set individuals, we characterize each individual by his relative deprivation, which measures how much trails other doing better than him. We seek divide into an exogenously predeter...

Journal: :Crystals 2022

Over the past two decades, quick development of wireless sensor networks has required nodes being self-powered. Pushed by this goal, in work, we demonstrated a ZnO nanowire-array-based piezoelectric nanogenerator (NG) prototype, which can convert mechanical energy into electricity. High-quality single crystalline nanowires, having an aspect ratio about 15, grown on gold-coated silicon substrate...

رحیمی فروشانی, عباس, فلاح مدواری, روح اله, مجلسی, فرشته, منظم, محمدرضا,

Background and purpose: The last way of noise control is using hearing protective devices that maybe the first way of noise control in some industries. Obviously if the hearing protection device is not used continuously and properly, its actual performance is reduced. The aim of this research was to investigate the relationship between demographic variables and BASNEF training constructs in pro...

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