نتایج جستجو برای: protective devices
تعداد نتایج: 313133 فیلتر نتایج به سال:
Currently, setting the obligation to use respiratory protective equipment with a level of protection at least FFP2 in public transport and commercial shopping centers are considered within European Union. Many new products appeared on market these specifications, many symbols have been used. The paper deals meaning selected based respirators markings (which massively, especially after pandemic ...
As chromatography technologies change, our approaches to using them in ways that value reliability, as well the we should approach troubleshooting and fixing problems, also change. In this installment, survey several protective strategies, discuss which have changed over time, ones not. Understanding how use of these has evolved is helpful both for designing reliability into new methods when co...
occupational exposure to blood and body fluids is an important hazard for health care workers, which places them at a high risk for blood-borne infections including hepatitis b virus, hepatitis c virus and human immunodeficiency virus and results in psychological and emotional stresses. several preventive measures have been proposed including pre-exposure ( e.g. , education, use of standard pre...
silicon dioxide or silica is the earth’s most abundant mineral. the primary pulmonary illness attributable to silica exposure is silicosis, which is observed in three forms: classic, accelerated and acute. a case of silicosis is presented in this article who has been working in a stone-cutting plant. he had suffered from symptoms of silicosis one year after employment in this plant (acute form)...
A key component for of any personal protective ensemble for demining is the helmet and/or face shield. For obvious reasons, protecting the face of a deminer is of utmost importance in the case of an accidental detonation of a mine. Currently, there is a wide range of different head and face protective devices available for the deminer, and this study attempts to perform a first evaluation of th...
this study tried to explore disciplinary variations of web blurbs across soft and hard knowledge fields on the one hand, and to illustrate how academic publishers exploit interactional metadiscourse devices in move structure of their blurbs on the other.
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