نتایج جستجو برای: Protection Method
تعداد نتایج: 1791871 فیلتر نتایج به سال:
the corrosion protection abilities of modified copper in 2-[((z)-1-{6-[(2-sulfanylphenyl)ethanimidoyl]-2-pyridyl}ethylidene) amino]-1-benzenthiol solution containing tio2 nanoparticles were evaluated by tafel polarization and impedance spectroscopy in 3.5% sodium chloride solution. the samples were characterized by energy dispersive x-ray (edx) and scanning electron microsc...
this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...
Background and aims: Employees in hospitals and healthcare centers are exposed to a wide range of respiratory contaminants, such as biological and chemical contaminants. To protect employees against these hazards, it is necessary to use respiratory masks with appropriate protection factor. This study aimed to assess respiratory hazards risk to determine the protection factor of mask in one of t...
A method of fault tracking for relay protection devices is presented in this paper. Fault means that after the failure devices, anomalies and warning information are obtained through data-mining technology, then, algorithm used to find cause failure. Let us take microcomputer as an example: Firstly, common symptoms prior probability causes can be collected empirical field data. Then, concept ev...
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