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Showing 47901 - 47920 of 82805 results
  • Chemical Reactivity of the CarbonCentered Free Radicals and Ferrous Iron in Coals Role of Bioavailable Fe2 in Coal Workers Pneumoconiosis
    Chemical Reactivity of the Carbon-Centered Free Radicals and Ferrous Iron in Coals: Role of Bioavailable Fe2+ in Coal Workers Pneumoconiosis
    Huang X ;
    Pezerat H
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Striking differences in the prevalence of coal workers' pneumoconiosis (CWP) exist between different coal mine regions. The major factors responsible for the observed regional differences in CWP have not yet been identified. In the present study, chemical reactivity of the carbon-centered free radicals in coals and lung tissues, as well as ferrous ...
  • Nylon FlockAssociated Interstitial Lung Disease
    Nylon Flock-Associated Interstitial Lung Disease
    Castellan, Robert M. ;
    Day, Brian
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    A work-related interstitial lung disease has been diagnosed in workers at five nylon flock facilities in three different states and a Canadian province. The National Institute for Occupational Safety and Health hosted a workshop at which consulting pulmonary pathologists reviewed lung tissue samples from all the cases for which lung biopsy material ...
    Public Domain
  • Control of Exposure to Perchloroethylene in Commercial Drycleaning 1999
    Control of Exposure to Perchloroethylene in Commercial Drycleaning [1999]
    Earnest, Gary S. ;
    Ewers, Lynda M.
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Perchloroethylene (PERC) is the most commonly used dry cleaning solvent. PERC can enter the body through respiratory and dermal exposure. Symptoms associated with exposure include depression of the central nervous system; damage to the liver and kidneys; impaired memory; confusion; dizziness; headache; drowsiness; and eye, nose, and throat irritati ...
    Public Domain
  • Static and Dynamic Loads in Ore and Waste Rock Passes in Underground Mines
    Static and Dynamic Loads in Ore and Waste Rock Passes in Underground Mines
    06/01/1999 | NIOSH
    This paper describes research to improve safety during transport of ore and waste in underground mines.
    Public Domain
  • Static and Dynamic Loads in Ore and Waste Rock Passes in Underground Mines
    Static and Dynamic Loads in Ore and Waste Rock Passes in Underground Mines
    Beus M ;
    Dreschler A
    1999/06/01 | Mining Publications
    This paper describes research to improve safety during transport of ore and waste in underground mines. Field tests are underway in mines in Idaho and Montana. Strains measured on structural support members in an ore pass provided information about total forces acting on the structure as material was dumped into it. Results show that measured stati ...
    Public Domain
  • Remediation workers exposure assessment feasibility study at the Department of Energys INEEL site phase I report
    Remediation workers' exposure assessment feasibility study at the Department of Energy's INEEL site phase I: report.
    Back DA ;
    Moore AM
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    This document entitled Remediation Workers Exposure Assessment Feasibility Study (EAFS) at the United States Department of Energy's (DOE) Idaho National Engineering and Environmental Laboratory (INEEL) addresses and identifies historic (November 1989 to June 1998), present (June 1998 -June 1999), and proposed (June 1999 and beyond) remediation work ...
  • Scavenging of Superoxide Anion Radical by Chaparral
    Scavenging of Superoxide Anion Radical by Chaparral
    Cosma G ;
    Gardner H
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Chaparral is considered to act as an antioxidant. However, the inhibitory effects of chaparral on specific radical species are not well understood. Using electron paramagnetic resonance (EPR) spectroscopy in combination with spin trapping techniques, we have found that chaparral scavenges superoxide anion radical (O2·-) in a dose-dependent manner. ...
    Public Domain
  • Nicotine Fumigation A Greenhouse Application
    Nicotine Fumigation: A Greenhouse Application
    Krake, Ann M.
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Our everyday encounters with typical background levels of microorganisms generally do not pose a significant occupational health risk to healthy adults. However, certain contaminated environments present unique exposure concerns due to the nature of the microorganisms encountered, the concentrations of the microorganisms, and the susceptibility of ...
    Public Domain
  • Epidemiologic Approaches to Risk Assessment
    Epidemiologic Approaches to Risk Assessment
    Bailer AJ ;
    Gilbert S
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    The use of epidemiologic data for risk assessment (RA) purposes has been increasing and should be expected to continue increasing in the future. In part, this trend is related to the continued controversy surrounding the use of toxicologic data for predicting human risk (Ames and Gold, 1990). It is also perhaps a reflection of improvements in the q ...
    Public Domain
  • Recovery of Some Common Solvents from Protective Clothing Breakthrough Indicator Pads by MicrowaveSolvent Extraction and Gas Chromatography
    Recovery of Some Common Solvents from Protective Clothing Breakthrough Indicator Pads by Microwave-Solvent Extraction and Gas Chromatography
    Berardinelli, Stephen P. Jr. ;
    Hall RC
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    The efficiency of solvent adsorption using Permea-Tec general solvent pads, used for the detection of chemical breakthrough of protective clothing, was determined for methanol, acetone, ethyl methyl ketone, trichloroethylene (TriCE), tetrachloroethylene (TetCE), toluene, m-xylene, and D-limonene. Known volumes of single or mixed solvents were added ...
    Public Domain
  • Mine Fire Detection in the Presence of Diesel Emissions
    Mine Fire Detection in the Presence of Diesel Emissions
    06/01/1999 | NIOSH
    A report on a series of four coal combustion experiments conducted at the NIOSH (PRL) Safety Research Coal Mine (SRCM) to evaluate the response of fire sensors to a small 0.61 m square smoldering coal fire which transitions to flaming combustion in the ...
    Public Domain
  • Health Hazard Evaluation Report HETA 9602522763 San Francisco Recreation and Parks Department San Francisco CA
    Health Hazard Evaluation Report: HETA 96-0252-2763: San Francisco Recreation and Parks Department, San Francisco, CA
    Burkhart, Joseph E.
    1999/06/01 | Health Hazard Evaluation Reports (HHE)
    In August 1996, the National Institute for Occupational Safety and Health (NIOSH) received a management request for a health hazard evaluation (HHE) from the San Francisco Recreation and Parks Department, San Francisco, California to evaluate the Parks Department's composting operation. Their request indicated that one of the three employees assign ...
    Public Domain
  • Health Hazard Evaluation Report HETA 9501982765 City of Springfield Department of Public Works Composting Facility Springfield MO
    Health Hazard Evaluation Report: HETA 95-0198-2765: City of Springfield, Department of Public Works Composting Facility, Springfield, MO
    Burkhart, Joseph E.
    1999/06/01 | Health Hazard Evaluation Reports (HHE)
    On March 27, 1995, the National Institute for Occupational Safety and Health (NIOSH) received a management request for a health hazard evaluation from the City of Springfield, Missouri, to assess any possible employee health effects from operation of the city's composting facility. There were no indications that employees have or had any health pro ...
    Public Domain
  • Silica Dust Control in Hard Rock Tunnels
    Silica Dust Control in Hard Rock Tunnels
    Dresel R ;
    Jurani R
    1999/06/01 | Mining Publications
    This report describes actions taken to control silica dust at the Yucca Mountain Exploratory Studies Facility (ESF), a tunnel located in Southern Nevada that is part of a scientific program to determine site suitability for a potential nuclear waste repository. The rock is a volcanic tuff containing significant percentages of both quartz and cristo ...
    Public Domain
  • Wavelet Analysis and Morphology for the Detection of Wheeze in Cough Sounds
    Wavelet Analysis and Morphology for the Detection of Wheeze in Cough Sounds
    Abrons HL ;
    Frazer DG
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Wheeze detection by physicians is of practical importance in the diagnosis and management of a number of lung diseases. To optimize the utility of lung sound assessment, accurate characterization of the wheeze is essential. The goal of this study was to develop objective computer aided analysis that detected temporal location and frequency of wheez ...
    Public Domain
  • Providing Safety and Health Protection for a Diverse Construction Workforce Issues and Ideas
    Providing Safety and Health Protection for a Diverse Construction Workforce: Issues and Ideas
    National Institute for Occupational Safety and Health
    1999/06/01 | NIOSH Numbered Publications
    Construction work appeals to many people. It offers varied assignments, a chance to work outdoors, good pay and a sense of accomplishment. Over the next 10-15 years, the 'face' of the construction industry will change. Its workforce will become more diverse. It will include more women workers and workers with different backgrounds and experiences. ...
    Public Domain
  • CFD Analysis of Mine Fire Smoke Spread and Reverse Flow Conditions
    CFD Analysis of Mine Fire Smoke Spread and Reverse Flow Conditions
    06/01/1999 | NIOSH
    A Computational Fluid Dynamics (CFD) program was used to model buoyancy induced Product-Of-Combustion (POC) spread from experimental fires in the National Institute for Occupational Safety and Health (NIOSH), Pittsburgh Research Laboratory (PRL), safety...
    Public Domain
  • An Atomic Model for the Pleated BetaSheet Structure of Abeta Amyloid Protofilaments
    An Atomic Model for the Pleated Beta-Sheet Structure of Abeta Amyloid Protofilaments
    Bartolotti L ;
    Darden TA
    1999/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Synchrotron x-ray studies on amyloid fibrils have suggested that the stacked pleated beta-sheets are twisted so that a repeating unit of 24 beta-strands forms a helical turn around the fibril axis (Sunde et al., J. Mol. Biol. 273:729-739). Based on this morphological study, we have constructed an atomic model for the twisted pleated beta-sheet of h ...
    Public Domain
  • An Overview of Technology and Training Simulations for Mine Rescue Teams
    An Overview of Technology and Training Simulations for Mine Rescue Teams
    Chasko, Linda L. ;
    Conti, Ronald S.
    1999/06/01 | Mining Publications
    Mine operators often rely on mine rescue teams to save lives during an underground emergency such as an underground fire, explosion, roof fall or water inundation. It is extremely important that team members are provided with adequate exploration equipment and that training simulations are conducted in a realistic manner. A series of mine rescue tr ...
    Public Domain
  • Health Hazard Evaluation Report HETA 9702242740 University of Iowa Hospitals and Clinics Iowa City Iowa
    Health Hazard Evaluation Report: HETA 97-0224-2740: University of Iowa Hospitals and Clinics, Iowa City, Iowa
    Esswein, Eric J. ;
    Morley, J. Clinton
    1999/06/01 | Health Hazard Evaluation Reports (HHE)
    On May 28, 1997, the National Institute for Occupational Safety and Health (NIOSH) received a request from the American Federation of State, County, and Municipal Employees (AFSCME). Local 12 for a health hazard evaluation (HHE) at the University of Iowa Hospitals and Clinics (UIHC). The requesters asked NIOSH to investigate indoor environmental qu ...
    Public Domain
47901 - 47920 / 82805