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Showing 45741 - 45760 of 82972 results
  • Occupational Risk Factors for Incident Respiratory Symptoms in a California Farmer Cohort
    Occupational Risk Factors for Incident Respiratory Symptoms in a California Farmer Cohort
    Ornstein M ;
    Saiki C
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Respiratory disease is a common chronic illness among farmers and can interfere with many aspects of daily living. Agricultural practices and exposures vary with geographic region, and there are few data on western, dry climate farmers. These results are based on a longitudinal study of a representative cohort of California farmers that began in 19 ...
  • Application of laser scanning confocal microscopy in the analysis of druginduced lung fibrosis
    Application of laser scanning confocal microscopy in the analysis of drug-induced lung fibrosis.
    Antonini JM ;
    Hubbs, Ann F.
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    With laser scanning confocal microscopy (LSCM), it is possible to simultaneously quantify lung fibrosis and distinguish pathological lesions of intact lung tissue. Lucifer yellow (LY) has been shown to be an ideal fluorescent probe to stain connective tissue matrix macromolecules selectively. It was the objective of the present work to evaluate the ...
    Public Domain
  • Controlling Formaldehyde Exposures During Embalming
    Controlling Formaldehyde Exposures During Embalming
    National Institute for Occupational Safety and Health
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Definition of Hazard - Embalmers are exposed to formaldehyde at concentrations averaging up to 9 parts per million (ppm) during embalming. Short-term exposures to this strong-smelling gas cause eye, nose, and throat irritation at levels up to 5 ppm. At levels from 10 to 20 ppm, it causes cough, chest tightness, and unusual heart beat; and from 50 t ...
    Public Domain
  • The Effect of Ion Transport Inhibitors on the Bioelectric Responses of GuineaPig TrachealEpithelium to Hypertonic DMannitol Solution
    The Effect of Ion Transport Inhibitors on the Bioelectric Responses of Guinea-Pig Tracheal-Epithelium to Hypertonic D-Mannitol Solution
    Fedan, Jeffery S. ;
    Johnston RA
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Elevation of serosal or mucosal tonicity induces the release of the non-nitric oxide, non-prostanoid epithelium-derived relaxing factor (EpDRF) from guinea-pig tracheal epithelium, which subsequently diffuses to the underlying airway smooth muscle to initiate relaxation. Hypertonicity-induced smooth muscle relaxation via EpDRF is preceeded by a dep ...
    Public Domain
  • Oxidative Stress in Chlorine Exposed AJ Mice
    Oxidative Stress in Chlorine Exposed A/J Mice
    Campbell HR ;
    Eidelman DH
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Acute chlorine (CI2) exposure is a cause of occupational asthma. CI2 has been shown to evoke a neutrophilic inflammation and airway remodeling in the rat. Neutrophils are capable of producing several reactive oxygen and nitrogen species. Of particular interest is NO2 that reacts with HOCI to form 3-nitrotyrosine (3NT) and 3-chlorotyrosine, markers ...
  • Symptom onset in the first two years of employment at a wood products plant some observations relevant to occupational medical screening
    Symptom onset in the first two years of employment at a wood products plant: some observations relevant to occupational medical screening.
    Petsonk, Edward L. ;
    Wang, Mei Lin
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Medical monitoring during work with sensitizers has been recommended, to facilitate early detection of health effects at a point when prompt control of exposures can reduce long term health consequences. A two-year prospective study was performed among workers at a newly established wood products plant which utilizes a liquid mixture of methylene d ...
    Public Domain
  • Programmable Electronic Mining Systems Best Practice Recommendations In Nine Parts Part 2 21 System Safety
    Programmable Electronic Mining Systems: Best Practice Recommendations (In Nine Parts): Part 2: 2.1 System Safety
    04/01/2001 | NIOSH
    This report is the second in a nine-part series of recommendations addressing the functional safety of processor-controlled mining equipment.
    Public Domain
  • A Longitudinal Study of Respiratory Health of Workers Exposed to Cotton Dust
    A Longitudinal Study of Respiratory Health of Workers Exposed to Cotton Dust
    Christiani, David C. ;
    Dai HL
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Rationale: Limited evidence exists with regard to the possible relationship between long-term exposure to cotton dust and chronic effects on health. This study was designed to examine the chronic effects of long-term exposure to cotton dust on respiratory health, and to investigate potentially modifying factors for the effects. Methods: The respira ...
  • Pharmacological Characterization of an Extract of Wheat Grain
    Pharmacological Characterization of an Extract of Wheat Grain
    Castranova, Vincent ;
    Chung E
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    The harvesting and processing of wheat is associated with acute and chronic respiratory disease. A water soluble extract from wheat grain (WGE) collected on a farm near Zagreb, Croatia, was prepared as a 1:10 w/v solution. The dust contained 337 ug protein/mg of dust and 1101 EU of endotoxin/mg of dust. Dose related contractions of nonsensitized, g ...
    Public Domain
  • Toxicity of 26DiTertButyl4Nitrophenol DBNP
    Toxicity of 2,6-Di-Tert-Butyl-4-Nitrophenol (DBNP)
    Alexander WK ;
    Baker WH
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    U.S. Navy submarines reported a yellowing of metal surfaces on their internal surfaces. The yellowing was initially identified on the painted steel bulkheads but further examination indicated that it was not limited to steel surfaces and included bedding, thread tape, Formica, plastisol covered hand-wheels, and aluminum lockers. Crew members also r ...
    Public Domain
  • Occupational Exposure to Airborne Mercury During Gold Mining Operations Near El Callao Venezuela
    Occupational Exposure to Airborne Mercury During Gold Mining Operations Near El Callao, Venezuela
    Drake P ;
    Jenkins M
    2001/04/01 | Mining Publications
    The National Institute for Occupational Safety and Health (NIOSH) recently conducted a cross-sectional study during gold mining operations near El Callao, Venezuela. The purpose of the study was to assess mercury exposures and mercury-related microdamage to the kidneys. The study consisted of concurrent occupational hygiene and biological monitorin ...
    Public Domain
  • GasPhase Reactions of Cyclohexanol with the Hydroxyl Radical
    Gas-Phase Reactions of Cyclohexanol with the Hydroxyl Radical
    Bradley WR ;
    Graziano GM
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    The gas phase reaction of the hydroxyl radical (OH) with cyclohexanol (COL) has been studied. The rate coefficient was determined to be (19.0 +/- 4.8) x 10-12 cm3 molecule-1 S-1 (at 297 +/- 3 K and 1 atmosphere total pressure) using the relative rate technique with pentanal, decane, and tridecane as the reference compounds. Assuming an average OH c ...
    Public Domain
  • Mortality Among Unionized Construction Plasterers and Cement Masons
    Mortality Among Unionized Construction Plasterers and Cement Masons
    Lehman E ;
    Ruder A
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    BACKGROUND: Plasterers perform a variety of duties including interior and exterior plastering of drywall, cement, stucco, and stone imitation; the preparation, installation, and repair of all interior and exterior insulation systems; and the fireproofing of steel beams and columns. Some of the current potential toxic exposures among plasterers incl ...
    Public Domain
  • Hard MetalInduced Disease Effects of Metal Cations In Vitro on Guinea Pig Isolated Airways
    Hard Metal-Induced Disease: Effects of Metal Cations In Vitro on Guinea Pig Isolated Airways
    Fedan, Jeffery S.
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Inhalation of dust from hard metal (HM), a mixture of tungsten carbide, cobalt, and other metals, can cause interstitial alveolitis, fibrosis, and asthma in the workplace. Some effects of HM could occur after the metals dissolve in the lung. We examined whether chloride salts of metals in HM alloys can elicit responses or modify reactivity to metha ...
    Public Domain
  • The Effects of Restricted Workspace on Lumbar Spine Loading
    The Effects of Restricted Workspace on Lumbar Spine Loading
    Cornelius, Kim M. ;
    Gallagher S
    2001/04/01 | Mining Publications
    Coal miners often handle heavy electrical power cables, weighing up to 10 kg per meter. These cables are manually lifted and attached to the mine roof to prevent damage from mobile underground equipment. Data suggest that workers who commonly perform cable-handling tasks experience a high rate of lost-time back injuries. In this study, six male und ...
    Public Domain
  • Respiratory health in newly hired cotton textile workers
    Respiratory health in newly hired cotton textile workers.
    Christiani, David C. ;
    Dai H-L
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Rationale: The study was conducted to determine early pulmonary responses to cotton dust exposure, including respiratory symptoms and pulmonary function, in previously-unexposed workers. Methods: The cohort was comprised of 225 newly hired workers at three cotton textile mills in Shanghai, China. Workers were young (average age 18 years), non-smoki ...
  • NIOSH generation chamber evaluation and pilot study
    NIOSH generation chamber evaluation and pilot study.
    Irwin K
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    This report describes the results of two related studies to evaluate NIOSH's generation chamber constructed by Assay Technology. The objective of the first study was to evaluate the generation chamber developed by NIOSH to expose diffusive samplers to various vapors at set environmental conditions, such as temperature, humidity, and atmospheric pre ...
  • Incidence of occupational asthma OA in an adult managed care population
    Incidence of occupational asthma (OA) in an adult managed care population.
    Breen VA ;
    Buist AS
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Accurate information on the incidence of adult onset asthma and the role of occupation in asthma's development is limited. Although estimates of the magnitude of this problem are available from the Sentinel Event Notification System for Occupational Risks (SENSOR), recent studies suggest they may substantially underestimate the actual number of dia ...
  • Industrial Hygiene Exposure Assessment Analysis and Interpretation
    Industrial Hygiene Exposure Assessment – Analysis and Interpretation
    Hewett, Paul
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    Each worker expects a work environment devoid of unreasonable risks. Our goal is to protect each individual worker, but limited resources usually compel industrial hygienists to first aggregate workers into exposure groups, determine which exposure groups warrant priority attention, and evaluate the 'exposure profile' of each exposure group in orde ...
    Public Domain
  • Medical Insurance Claims and Surveillance for Occupational Disease Analysis of Respiratory Cardiac and Cancer Outcomes in Auto Industry Tool Grinding Operations
    Medical Insurance Claims and Surveillance for Occupational Disease: Analysis of Respiratory, Cardiac, and Cancer Outcomes in Auto Industry Tool Grinding Operations
    Park RM
    2001/04/01 | National Institute for Occupational Safety and Health (NIOSH)
    To evaluate medical insurance claims for chronic disease investigation, claims from eight automotive machining plants (1984 to 1993) were linked with work histories (1967 to 1993), and associations with respiratory, cardiac, and cancer conditions were investigated, in a case-control design analyzed with logistic regression. The primary focus was to ...
    Public Domain
45741 - 45760 / 82972