نتایج جستجو برای: niosh
تعداد نتایج: 1016 فیلتر نتایج به سال:
Disposable N95 filtering facepiece respirators (FFRs) certified by the National Institute for Occupational Safety and Health (NIOSH) are widely used by healthcare workers to reduce exposures to infectious biological aerosols. There is currently major concern among public health officials about a possible shortage of N95 FFRs during an influenza pandemic. Decontamination and reuse of FFRs is a p...
The Occupational Safety and Health Act of 1970 provides legislative authority for the Occupational Safety and Health Administration (OSHA) of the Department of Labor, “to set standards which most adequately assure, to the extent feasible on the basis of the best available evidence, that no employee will suffer material impairment of health or functional capacity even if such employee has regula...
Respirator fit test panels provide an objective tool for selecting representative human test subjects based upon their facial characteristics for use in research, product development, testing and certification. Fit test panels were typically based upon anthropometric data such as the 1967-1968 survey of American military personnel. In this study, the objectives were to: (i) evaluate the applica...
In October 1981, the Denver Museum of Natural History, Denver, Colorado, requested assistance from the National Institute for Occupational Safety and Health (NIOSH) in evaluating occupational exposures to dichlorodiphenyl trichloroethane (DDT) because of concern about possible health hazards (1). Workers potentially exposed to DDT included curators, preparators, and museum assistants involved i...
This paper presents near optimal solution method to find safe work place design using harmony search algorithm. Revised NIOSH equations are considered to minimize relative estimate of the physical stress associated with a manual-lifting job. The proposed algorithm will assist occupational safety and health practioners in evaluating lifting tasks and reducing the incidence of low back injuries i...
This study compared the simulated workplace protection factors (SWPFs) between NIOSH-approved N95 respirators and P100 respirators, including two models of filtering facepiece respirator (FFR) and two models of elastomeric halfmask respirator (EHR),against sodium chloride particles (NaCl) in a range of 10 to 400 nm. Twenty-five human test subjects performed modified OSHA fit test exercises in a...
(i) From figure 4 (Grzebyk et al., 2005), the French method (Method 1) of appraisal of the quality of the results of analysts involved in fibre counting by PCOM is, at least theoretically, quite a lot more stringent than the other two methods discussed. However, in practice in the field (table 2, Grzebyk et al., 2005), the French method is a little bit less demanding (‘selective’) than the RICE...
Indoor firing ranges are a source of lead exposure and elevated blood lead levels (BLLs) among employees, their families, and customers, despite public health outreach efforts and comprehensive guidelines for controlling occupational lead exposure. There are approximately 16,000-18,000 indoor firing ranges in the United States, with tens of thousands of employees. Approximately 1 million law en...
This study compared the simulated workplace protection factors (SWPFs) between NIOSH-approved N95 respirators and P100 respirators, including two models of filtering facepiece respirator (FFR) and two models of elastomeric halfmask respirator (EHR),against sodium chloride particles (NaCl) in a range of 10 to 400 nm. Twenty-five human test subjects performed modified OSHA fit test exercises in a...
Occupational regulations are developed to conserve the hearing of a worker noise-exposed for 8 h per day. Workers often work longer shifts. In order to account for longer exposures, regulators have adopted variations of the equal energy hypothesis in which the ear is modeled as an integrator of acoustic energy over time. Thus time and energy can be traded to produce equal hearing loss. This res...
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