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Showing 47741 - 47760 of 82805 results
  • Evaluation of Microbiological Contamination in a Museum
    Evaluation of Microbiological Contamination in a Museum
    Krake, Ann M. ;
    Martinez, Kenneth F.
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    In recent years, bioaerosols (the term given to airborne microorganisms and their products) have become an important occupational health issue in the areas of agriculture, biotechnology, and nonindustrial indoor environments. Much of the concern regarding exposure to bioaerosols has focused on the ability of certain microorganisms to elicit inappro ...
    Public Domain
  • RedoxDependent Regulation of Interleukin8 by Tumor Necrosis FactorAlpha in Lung Epithelial Cells
    Redox-Dependent Regulation of Interleukin-8 by Tumor Necrosis Factor-Alpha in Lung Epithelial Cells
    Flood L ;
    Leonard, Stephanie
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Increasing evidence supports a major role for interleukin-8 (IL-8), a potent neutrophil chemoattractant, in the chronic progression of inflammatory lung diseases. The present studies were designed to characterize the molecular events involved in IL-8 induction in pulmonary epithelial cells in response to tumor necrosis factor-alpha (TNF-alpha). IL- ...
    Public Domain
  • Particle Concentrations in an AirConditioned Office Building With Normal and High Efficiency Filtration
    Particle Concentrations in an Air-Conditioned Office Building With Normal and High Efficiency Filtration
    Faulkner D ;
    Fisk WJ
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Indoor and outdoor particle concentrations and ventilation rates were measured versus time in a large office building without tobacco smoking. Periodically, high efficiency filters replaced the normal filters in air handling systems. For all particle sizes, indoor concentrations varied considerably with time. Even with the normal air filters, which ...
    Public Domain
  • Factory Performance Evaluations of Engineering Controls for Asphalt Paving Equipment
    Factory Performance Evaluations of Engineering Controls for Asphalt Paving Equipment
    Brumagin TE ;
    Mead, Kenneth R.
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    This article describes a unique analytical tool to assist the development and implementation of engineering controls for the asphalt paving industry. Through an agreement with the U.S. Department of Transportation, the National Asphalt Pavement Association (NAPA) requested that the National Institute for Occupational Safety and Health (NIOSH) assis ...
    Public Domain
  • Induction of TNFalpha in Macrophages by Vanadate Is Dependent on Activation of Transcription Factor NFKB and Free Radical Reactions
    Induction of TNFalpha in Macrophages by Vanadate Is Dependent on Activation of Transcription Factor NF-KB and Free Radical Reactions
    Castranova, Vincent ;
    Ding M
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Vanadium-induced TNFalpha production is believed to play an important role in respiratory disease associated with air pollution and occupational exposure. While vanadium is able to induce TNFalpha in macrophages or airway epithelial cells, the underlying mechanism is not well defined. In the present study, mechanisms of vanadate-induced TNFalpha pr ...
    Public Domain
  • A Bayesian Approach to Retrospective Exposure Assessment
    A Bayesian Approach to Retrospective Exposure Assessment
    Ramachandran G ;
    Vincent JH
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    A variety of health effects are caused by chronic, cumulative exposure over time to pollutants. In these cases, to establish dose-response relationships for epidemiological and risk assessment purposes, it is vital to determine the exposures of individuals or cohorts as functions of time. Most existing occupational exposure databases, however, do n ...
  • Localization of Inducible Nitric Oxide Synthase in a Rat Model of Silicosis
    Localization of Inducible Nitric Oxide Synthase in a Rat Model of Silicosis
    Castranova, Vincent ;
    Hubbs A
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    We are participating in a collaborative project at NIOSH on mechanisms of silicosis, in which rats were exposed to filtered -air (control) or silica aerosol of 15 mg/m3 (6 hr/day, 5 days/week), with assays conducted at intervals over a 6 month period. 1 We are especially interested in the role of nitric oxide (NO) in the pathophysiology of lung dis ...
    Public Domain
  • Radiation and Mortality of Workers at Oak Ridge National Laboratory Positive Associations for Doses Received at Older Ages
    Radiation and Mortality of Workers at Oak Ridge National Laboratory: Positive Associations for Doses Received at Older Ages
    Richardson DB ;
    Wing S
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    We examined associations between low-level exposure to ionizing radiation and mortality among 14,095 workers hired at the Oak Ridge National Laboratory between 1943 and 1972. Workers at the facility were individually monitored for external exposure to ionizing radiation and have been followed through 1990 to ascertain cause of death information. Po ...
  • A Study of the Effect of Chrysotile Fiber Surface Composition on Genotoxity In Vitro
    A Study of the Effect of Chrysotile Fiber Surface Composition on Genotoxity In Vitro
    Keane MJ ;
    Miller, William E.
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Chrysotile fibers (NIEHS intermediate length) were treated with ultrapure HCl to alter the fiber surface chemistry without substantially changing fiber morphology or dimensions. The objective of the study was to determine whether fiber surface chemistry is an important variable in fiber genotoxicity in vitro. The modified fibers, along with native ...
    Public Domain
  • Health Hazard Evaluation Report HETA 9900932749 University of Medicine and Dentistry of New Jersey St Peters University Hospital Piscataway New Jersey
    Health Hazard Evaluation Report: HETA 99-0093-2749: University of Medicine and Dentistry of New Jersey, St. Peter’s University Hospital, Piscataway, New Jersey
    Baron, Sherry L. ;
    Habes, Daniel J.
    1999/08/01 | Health Hazard Evaluation Reports (HHE)
    On February 1, 1999, the National Institute for Occupational Safety and Health (NIOSH) received a request from the Safety Manager of the University of Medicine and Dentistry of New Jersey for a health hazard evaluation (HHE). The request stated that ultrasound technologists at one of the University's antenatal testing units were experiencing neck, ...
    Public Domain
  • Fatal Harmful Substances or Environmental Exposures in Agriculture 1992 to 1996
    Fatal Harmful Substances or Environmental Exposures in Agriculture, 1992 to 1996
    Adekoya, Nelson ;
    Myers, John R.
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Data from the Census of Fatal Occupational Injuries surveillance system from 1992 through 1996 were analyzed to allow a better understanding of exposures to harmful substances or environments that resulted in agricultural work fatalities. There were 357 fatalities as a result of these exposures in the agriculture production and agriculture services ...
    Public Domain
  • Direct Detection of Histoplasma capsulatum in Soil Suspensions by TwoStage PCR
    Direct Detection of Histoplasma capsulatum in Soil Suspensions by Two-Stage PCR
    Reid TM ;
    Schafer, Millie P.
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Histoplasmosis is the most common pulmonary mycosis in the United States. The responsible fungal pathogen, Histoplasma capsulatum , grows in soils contaminated with bird or bat droppings. Inhalation of dust from contaminated areas containing H. capsulatum spores is a primary route of infection. The ability to detect H. capsulatum in soil samples ha ...
    Public Domain
  • NORA National Occupational Research Agenda
    NORA – National Occupational Research Agenda
    National Institute for Occupational Safety and Health
    1999/08/01 | NIOSH Numbered Publications
    In April 1996, The National Institute for Occupational Safety and Health (NIOSH) and its partners unveiled the National Occupational Research Agenda (NORA), a framework to guide occupational safety and health research into the next decade. NORA is a tool not only for NIOSH but for the entire occupational safety and health community. Approximately 5 ...
    Public Domain
  • Organophosphate Neuropathy Due to Methamidophos Biochemical and Neurophysiological Markers
    Organophosphate Neuropathy Due to Methamidophos: Biochemical and Neurophysiological Markers
    Almendarez J ;
    Cuadra R
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Neuropathy target esterase (NTE), the putative target enzyme for organophosphate induced delayed polyneuropathy (OPIDP), can be measured in lymphocytes but has rarely been assessed in acute human poisoning. Serum autoantibodies to nervous system proteins develop in hens poisoned with neuropathic insecticides and also have not been studied after hum ...
  • Innovative Approach for Estimating Fugitive Gaseous Fluxes Using Computed Tomography and Remote Optical Sensing Techniques
    Innovative Approach for Estimating Fugitive Gaseous Fluxes Using Computed Tomography and Remote Optical Sensing Techniques
    Hashmonay RA ;
    Yost MG
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    This paper presents a new approach to quantify emissions from fugitive gaseous air pollution sources. The authors combine Computed Tomography (CT) with Path-Integrated Optical Remote Sensing (PI-ORS) concentration data in a new field beam geometry. Path-integrated concentrations are sampled in a vertical plane downwind from the source along several ...
  • Roof Bolt Response to Shear Stress Laboratory Analysis
    Roof Bolt Response to Shear Stress: Laboratory Analysis
    08/01/1999 | NIOSH
    Recent studies by researchers from the National Institute for Occupational Safety and Health indicate that shear loading contributes significantly to failure of bolts used for rock reinforcement in coal mine roofs. Laboratory tests on 17 bolts were con...
    Public Domain
  • Evaluation of Postural Stability in Workers Exposed to Lead at a Secondary Lead Smelter
    Evaluation of Postural Stability in Workers Exposed to Lead at a Secondary Lead Smelter
    Biagini, Raymond E. ;
    Brightwell WS
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Postural sway testing was carried out on a group of 145 workers exposed to lead in a secondary lead smelter and 84 workers not exposed to lead in a hinge manufacturing plant. All workers were measured for blood lead levels (BLL) and erythrocyte zinc protoporphyrin (ZPP) concentrations at the time of testing and both a total cumulative and a time-we ...
    Public Domain
  • A Window Washer Died as the Result of a 40foot Fall from the Roof of a Threestory Building
    A Window Washer Died as the Result of a 40-foot Fall from the Roof of a Three-story Building
    Ohio Fatality Assessment and Control Evaluation (Ohio FACE)  ...
    1999/08/01 | Fatality Assessment and Control Evaluation Reports (FACE)
    On Wednesday, February 3, 1999, a 22-year-old window washer fell 40 feet from a three-story building sustaining multiple head injuries. He died Thursday February 4, 1999, as a result of the injuries sustained in the fall. A local window cleaning company that has been in business for more than one hundred years employed the victim. The company had n ...
  • NIOSH Health Hazard Evaluation Report HETA9800962737 Exempla St Joseph Hospital Denver Colorado 1999
    NIOSH Health Hazard Evaluation Report: HETA-98-0096-2737: Exempla St. Joseph Hospital: Denver, Colorado [1999]
    Esswein, Eric J. ;
    Page, Elena H.
    1999/08/01 | Health Hazard Evaluation Reports (HHE)
    This document has been superseded and the new version can be found https://www.cdc.gov/niosh/hhe/reports/pdfs/1998-0096-2737.pdf. On January 23, 1998, the National Institute for Occupational Safety and Health (NIOSH) received a confidential employee request for a health hazard evaluation (HHE) at Exempla Health Care Facility/St. Joseph's Hospital i ...
    Public Domain
  • Occupational Stressors Stress Responses and Alcohol Consumption Among Professional Firefighters A Prospective Longitudinal Analysis
    Occupational Stressors, Stress Responses, and Alcohol Consumption Among Professional Firefighters: A Prospective, Longitudinal Analysis
    Beaton RD ;
    Johnson LC
    1999/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    This dual-site longitudinal prospective study monitored and measured change in self-reported occupational stressors, emotional trauma, symptoms of stress, and alcohol consumption in urban firefighters. Study participants were 188 firefighters employed by two urban fire departments. The results showed that of 19 occupational stressors examined, only ...
47741 - 47760 / 82805