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Showing 43661 - 43680 of 82803 results
  • Assessment of Occupational Health and Safety Risks of Farmworkers in Colorado
    Assessment of Occupational Health and Safety Risks of Farmworkers in Colorado
    Bigelow P ;
    Buchan R
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Migrant farmworkers face a variety of hazards including exposure to pesticides and agricultural chemicals. However, few studies have quantatively evaluated these risks. Hazards were assessed during 32 field surveys conducted in the agricultural fields and 15 surveys at five camps. Observations of 1,461 farmworkers for potential hazards were recorde ...
  • Causes Nature and Outcomes of WorkRelated Injuries to Adolescents Working at Farm and NonFarm Jobs in Rural Minnesota
    Causes, Nature, and Outcomes of Work-Related Injuries to Adolescents Working at Farm and Non-Farm Jobs in Rural Minnesota
    Bannerman-Thompson H ;
    Merchant D
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Background: Although there are many studies on working adolescents, information on youth who simultaneously hold jobs on both a farm and in other sectors of the economy is lacking. Methods: Six high schools in rural Minnesota were evaluated for adolescent work practices and injury incidence. A 20-page self-administered survey was administered to st ...
  • Effect of Contraction History on Torque Deficits by Stretches of Active Rat Skeletal Muscles
    Effect of Contraction History on Torque Deficits by Stretches of Active Rat Skeletal Muscles
    Stauber WT ;
    Willems MET
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Effects of contraction history on torque deficits by stretches of active skeletal muscles were examined. After three contractions using maximal and submaximal activation (80 and 20 Hz) at an ankle position of 40 (i.e., long muscle length) and with maximal activation at 120 (i.e., short muscle length), the isometric and stretch torques (15 stretches ...
  • Control of Dust in Hard Rock Tunnels
    Control of Dust in Hard Rock Tunnels
    Kissell, Fred N.
    2002/08/01 | Mining Publications
    This article explains how to reduce respirable dust in hard rock tunnels during excavation by tunnel boring machines (TBMs). When dust levels are too high, the dust source must be pinpointed and the ventilation and dust collection systems must be checked. If the ventilation and dust collection systems are working properly, then the water sprays or ...
    Public Domain
  • Ergonomic Intervention A Case Study in a Mass Production Environment
    Ergonomic Intervention: A Case Study in a Mass Production Environment
    Estill, Cheryl F. ;
    MacDonald, Leslie A.
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Household appliance manufacturing involves manually intensive parts assembly performed at a fixed work pace that is governed by assembly line speed. The U.S. Bureau of Labor Statistics reported that the household appliance industry was the twelfth highest for musculoskeletal disorders (MSDs), with 268 cases per 10,000 workers. (1) Likewise, the Aus ...
    Public Domain
  • Roof Screening Best Practices and Roof Bolting Machines
    Roof Screening: Best Practices and Roof Bolting Machines
    08/01/2002 | NIOSH
    Roof screening has been found to be very effective in controlling the fall of small rocks from the immediate roof surface. Data is presented from two mines that show a dramatic reduction in roof skin injuries when screening is used.
    Public Domain
  • Insights into the Quantitative Relationship Between Sensitization and Challenge for Allergic Contact Dermatitis Reactions
    Insights into the Quantitative Relationship Between Sensitization and Challenge for Allergic Contact Dermatitis Reactions
    Kashon M ;
    Luster M
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    The ability of chemical or pharmaceutical agents to induce allergic contact dermatitis (ACD) is of major health and regulatory concern. As such, tests to identify their sensitizing capacity, such as the guinea pig maximization test and the more recently developed local lymph node assay, are broadly used. Ideally, for risk assessment it is useful to ...
    Public Domain
  • Sperm ubiquitination in patients with dysplasia of the fibrous sheath
    Sperm ubiquitination in patients with dysplasia of the fibrous sheath
    Benmusa A ;
    Brugo Olmedo S
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    BACKGROUND: Human sperm with structural abnormalities display an increased content of the cellular proteolytic marker peptide, ubiquitin. We investigated whether dysplasia of the fibrous sheath (DFS), a severe structural anomaly found in the sperm of some asthenozoospermic patients, is accompanied by (i) increased ubiquitination of the sperm surfac ...
  • InDepth Survey Report Control of Respirable Dust and Crystalline Silica from Grinding Concrete at Messer Construction Newport Kentucky and Baker Concrete Construction Dayton Ohio
    In-Depth Survey Report: Control of Respirable Dust and Crystalline Silica from Grinding Concrete at Messer Construction, Newport, Kentucky and Baker Concrete Construction, Dayton, Ohio
    Echt, Alan S. ;
    Shulman, Stanley A.
    2002/08/01 | Engineering and Physical Hazards Survey Reports
    When construction workers use hand-held grinders to smooth poured concrete surfaces after forms are removed, they risk overexposure to respirable dust and crystalline silica. A previous study at a stadium construction site revealed TW A respirable crystalline silica exposures that ranged from 56 to 830 microg/m3 (the NIOSH REL is 50 microg/m3) and ...
    Public Domain
  • Hazard Controls Dust Protection for Bag Stackers 200208
    Hazard Controls: Dust Protection for Bag Stackers [2002-08]
    National Institute for Occupational Safety and Health
    2002/08/01 | Mining Publications
    Mineral processing plants in the United States and throughout the world process material that is finely ground and placed into bags for shipping to the consumer. These bags normally range from 50 to 100 pounds in weight. Once the material is placed in these bags, a bag stacker loads the bags onto pallets. A bag stacker is exposed to a lot of dust t ...
    Public Domain
  • Fluorescent Tracer Evaluation of Chemical Protective Clothing During Pesticide Applications in Central Florida Citrus Groves
    Fluorescent Tracer Evaluation of Chemical Protective Clothing During Pesticide Applications in Central Florida Citrus Groves
    Birnbaum SG ;
    Fenske RA
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Chemical protective clothing (CPC) is often recommended as a method of exposure mitigation among pesticide applicators. This study evaluated four CPC regimens (cotton work shirts and work pants, cotton/polyester coveralls, and two non-woven garments) during 33 airblast applications of the organophosphorus insecticide ethion in central Florida citru ...
  • Cholinesterase Measurements with an Automated Kit
    Cholinesterase Measurements with an Automated Kit
    Henderson JD ;
    Oliveira GH
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Background: The Test-mate kit determines acetylcholinesterase (AChE, EC 3.1.1.7) and hemoglobin content of a drop of blood, displaying enzyme activities normalized to 25 degrees C. Previous models produced inconsistent results at different temperatures. This report focuses on the current model, ChE 400, and two instruments of a previous OP model. M ...
  • Occupational dust exposure and the risk of laryngeal cancer in Turkey
    Occupational dust exposure and the risk of laryngeal cancer in Turkey
    Akpinar-Elci, Muge ;
    Blair, Austin
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    A hospital-based case-referent study was conducted to identify occupational risk factors for laryngeal cancer. In a previous report an association was found between laryngeal cancer and occupations with potential dust exposure; a job-exposure matrix was developed to aid further evaluation of laryngeal cancer risks from five occupational dust exposu ...
    Public Domain
  • Thoracic SizeSelection of Fibres Dependence of Penetration on Fibre Length for Five Thoracic Sampler Types
    Thoracic Size-Selection of Fibres: Dependence of Penetration on Fibre Length for Five Thoracic Sampler Types
    Maynard AD
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    It has been suggested that the non-size-selective sampling methods currently used for fibrous aerosols potentially lead to the presence of large compact particles, agglomerates and fibre clumps in samples, which in turn reduce the accuracy and precision of the manual fibre counting techniques employed to analyse samples. The use of thoracic size-se ...
    Public Domain
  • Frequency Distributions from Birth Death and Creation Processes
    Frequency Distributions from Birth, Death and Creation Processes
    Bartley, David L. ;
    Ogden T
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    The time-dependent frequency distribution of groups of individuals versus group size was investigated within a continuum approximation, assuming a simplified individual growth, death and creation model. The analogy of the system to a physical fluid exhibiting both convection and diffusion was exploited in obtaining various solutions to the distribu ...
    Public Domain
  • AntiProOxidant Effects of Phenolic Compounds in Cells Are Colchicine Metabolites ChainBreaking Antioxidants
    Anti-/Pro-Oxidant Effects of Phenolic Compounds in Cells: Are Colchicine Metabolites Chain-Breaking Antioxidants?
    Kagan VE ;
    Matsura T
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Effective scavenging of reactive radicals and low reactivity of generated secondary antioxidant radicals towards vital intracellular components are two critical requirements for a chain-breaking antioxidant. Tubulin-binding properties aside, colchicine metabolites remain largely untested for other possible biological activities, including antioxida ...
    Public Domain
  • Temporal Association of Childrens Pesticide Exposure and Agricultural Spraying Report of a Longitudinal Biological Monitoring Study
    Temporal Association of Children’s Pesticide Exposure and Agricultural Spraying: Report of a Longitudinal Biological Monitoring Study
    Fenske RA ;
    Fisker AJ
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    We measured organophosphorus (OP) pesticide exposures of young children living in an agricultural community over an entire year and evaluated the impact of agricultural spraying on exposure. We also examined the roles of age, sex, parental occupation, and residential proximity to fields. We recruited 44 children (2-5 years old) through a Women, Inf ...
  • Health and Safety Hazards in Northwest Agriculture Setting an Occupational Research Agenda
    Health and Safety Hazards in Northwest Agriculture: Setting an Occupational Research Agenda
    Fenske RA ;
    Harrington MJ
    2002/08/01 | National Institute for Occupational Safety and Health (NIOSH)
    Background: Agriculture is among the most hazardous occupations in the United States. Research can provide new insights about disease and injury and serve as the foundation for occupational health and safety policies. The determination of research priorities can be problematic. Public participation approaches offer opportunities to identify and int ...
  • New Developments with the Coal Mine Roof Rating
    New Developments with the Coal Mine Roof Rating
    08/01/2002 | NIOSH
    The purpose of this paper is to bring the mining community up to date with recent improvements and applications of the CMRR.
    Public Domain
  • Health Hazard Evaluation Report HETA 9903052878 Lead Safe Services Inc Neenah Wisconsin
    Health Hazard Evaluation Report: HETA #99–0305–2878: Lead Safe Services, Inc., Neenah, Wisconsin
    Ashley, Kevin E. ;
    Chaudhre, Zulfi
    2002/08/01 | Health Hazard Evaluation Reports (HHE)
    At the request of a state-licensed contractor, the National Institute for Occupational Safety and Health (NIOSH) conducted a study of residential lead hazard reduction work. Workers' task-specific and full-shift personal airborne lead (PbA) exposures were measured on three consecutive days during exterior work at two single-family homes in Oshkosh, ...
    Public Domain
43661 - 43680 / 82803