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Showing 45361 - 45380 of 82972 results
  • Factors Affecting the Location of Methanometers on Mining Equipment
    Factors Affecting the Location of Methanometers on Mining Equipment
    Taylor, Charles D. ;
    Thimons, Edward D.
    2001/06/17 | Mining Publications
    The U.S. Code of Federal Regulations (Title 30) requires that a methane monitor be placed on every mining machine to continuously observe and record methane levels at the face. The monitor must provide a warning whenever methane levels are 1.0 percent or higher. An effective monitoring system will indicate a methane concentration of 1.0 percent on ...
    Public Domain
  • New Tools to Monitor Personal Exposure to Respirable Coal Mine Dust
    New Tools to Monitor Personal Exposure to Respirable Coal Mine Dust
    Thimons, Edward D. ;
    Volkwein, Jon C.
    2001/06/17 | Mining Publications
    The compliance sampling method for coal mine dust in the United States has not changed appreciably in the last 30 years. A call for more frequent sampling with immediately available results is leading to new instruments that may supplement or replace the existing sampler. This report discusses two such instruments that provide immediate results of ...
    Public Domain
  • Effects of Water Sprays and Scrubber Exhaust on Face Methane Concentrations
    Effects of Water Sprays and Scrubber Exhaust on Face Methane Concentrations
    Taylor, Charles D. ;
    Zimmer JA
    2001/06/17 | Mining Publications
    Past studies with blowing face ventilation systems have shown that using a machine-mounted scrubber and water sprays can reduced methane levels at the face. The current research was conducted to determine how the sprays and scrubber interact to reduce methane levels, and what spray configurations provide the best face ventilation when used with a s ...
    Public Domain
  • Contrasting Roles of NFkB and JNK in ArseniteInduced p53Independent Expression of GADD45alpha
    Contrasting Roles of NF-kB and JNK in Arsenite-Induced p53-Independent Expression of GADD45alpha
    Chen F ;
    Leonard, Stephen S.
    2001/06/14 | National Institute for Occupational Safety and Health (NIOSH)
    Growth arrest and DNA damage-inducible protein 45alpha (GADD45alpha) is an important cell cycle checkpoint protein that arrests cells at G2/M phase by inhibiting the activity of G2-specific kinase, cyclin B/p34cdc2. We report here that arsenite induces GADD45alpha expression in a p53-independent fashion and that this GADD45alpha induction by arseni ...
    Public Domain
  • Improving Quality Improvement Using Achievable Benchmarks for Physician Feedback A Randomized Controlled Trial
    Improving Quality Improvement Using Achievable Benchmarks for Physician Feedback: A Randomized Controlled Trial
    Allison JJ ;
    Kiefe CI
    2001/06/13 | National Institute for Occupational Safety and Health (NIOSH)
    Context Performance feedback and benchmarking, common tools for health care improvement, are rarely studied in randomized trials. Achievable Benchmarks of Care (ABCs) are standards of excellence attained by top performers in a peer group and are easily and reproducibly calculated from existing performance data. Objective To evaluate the effectivene ...
  • Implementation of Shipyard Ergonomic Interventions
    Implementation of Shipyard Ergonomic Interventions
    Hales, Thomas R. ;
    Hudock, Stephen D.
    2001/06/13 | National Institute for Occupational Safety and Health (NIOSH)
    Researchers at the National Institute for Occupational Safety and Health (NIOSH), in conjunction with the Facilities and Tooling initiative of the MARITECH Advanced Shipbuilding Enterprise, conducted a series of ergonomic interventions at eight shipbuilding, ship repair and ship breaking yards across the United States. These interventions were targ ...
    Public Domain
  • Outbreak of Legionnaires Disease Among Automotive Plant Workers Ohio 2001
    Outbreak of Legionnaires’ Disease Among Automotive Plant Workers – Ohio 2001
    Allan T ;
    Horgan T
    2001/06/13 | National Institute for Occupational Safety and Health (NIOSH)
    During March 12--15, 2001, four cases of Legionnaires' disease (LD) among workers at an automotive engine manufacturing plant (plant X) were reported to the Cuyahoga County Board of Health, Cleveland, Ohio; all four diagnoses were confirmed by Legionella urine antigen. Illness onset among the four workers occurred during March 2--4; two workers die ...
    Public Domain
  • Principles of Environmental and Occupational Hazard Assessment
    Principles of Environmental and Occupational Hazard Assessment
    Crutchfield CD ;
    Sullivan JB Jr
    2001/06/12 | National Institute for Occupational Safety and Health (NIOSH)
    A fundamental precept of human toxicology is that the intensity of toxic action is a function of the concentration of the toxic agent that reaches a target organ or tissue. The relationship between concentration and intensity of effect is commonly referred to as the dose-response relationship for a given substance. Dose is defined as the amount or ...
  • Tire and Rubber Manufacturing Industry
    Tire and Rubber Manufacturing Industry
    Lewis R ;
    Sullivan JB Jr.
    2001/06/12 | National Institute for Occupational Safety and Health (NIOSH)
    The rubber industry employs hundreds of chemicals in a variety of processes, and reactions leading to potentially hazardous exposures can occur in multiple environments. Decomposition products from chemical reactions may account for many unknown exposures to potential carcinogens at various sites with excess of lung cancer, leukemia, and lymphomas ...
  • Toxic Hazards of Mining and Smelting
    Toxic Hazards of Mining and Smelting
    Burgess JL ;
    Lever PJA
    2001/06/12 | National Institute for Occupational Safety and Health (NIOSH)
    Reducing worker exposure can be considered most easily during the design of a new smelter. Handling of crushed materials can be automated and contained to prevent spread of dusts. The use of hazardous materials can also be automated to minimize human exposure. Easy access for maintenance can be planned. Less toxic processes, such as using hydrometa ...
  • Indoor Environmental Quality and Health
    Indoor Environmental Quality and Health
    Brooks BO ;
    Krieger GR
    2001/06/12 | National Institute for Occupational Safety and Health (NIOSH)
    Approximately 71 million employees work indoors in the United States and the U.S. Bureau of Labor Statistics estimates that more than 21 million of these are exposed to some degree of poor indoor environmental quality. The Occupational Safety and Health Administration (OSHA) estimates that 69,000 severe headaches and 1051000 respiratory problems ma ...
  • Aromatic Solvents
    Aromatic Solvents
    Sullivan JB Jr. ;
    Van Ert MD
    2001/06/12 | National Institute for Occupational Safety and Health (NIOSH)
    Aromatic solvents are benzene derivatives with high vapor pressures and low boiling points that increase with increasing molecular weight. These solvents possess high vapor densities and are not very water soluble. Most of these compounds are used as starting chemicals or intermediate chemicals for synthesis of other organic compounds. Aromatic sol ...
  • Organochlorine Pesticides
    Organochlorine Pesticides
    Sullivan JB Jr ;
    Van Ert MD
    2001/06/12 | National Institute for Occupational Safety and Health (NIOSH)
    Chlorinated hydrocarbon pesticides include DDT, DDE, and DDD; hexachlorocyclohexane (HCH) and isomers, including lindane (y-HCH); cyclodiene compounds; chlordecone, kelevan, and mirex; toxaphene; and dicofol and methoxychlor. The general toxicity of chlorinated hydrocarbon insecticides is central nervous system (CNS) stimulation or depression, depe ...
  • SeventeenYearOld Bagger at Retail Grocery Store Suffers Amputation While Operating a Meat GrinderPennsylvania
    Seventeen-Year-Old Bagger at Retail Grocery Store Suffers Amputation While Operating a Meat Grinder–Pennsylvania
    National Institute for Occupational Safety and Health. Fatality Assessment and Control Evaluation (FACE) Program
    2001/06/11 | Fatality Assessment and Control Evaluation Reports (FACE)
    On September 12, 2000, a 17-year-old bagger (the victim) at a retail grocery store suffered amputation of the right arm as a result of being caught in an operating meat grinder. The victim had been working in the family-owned store after school hours. On the day of the incident, a customer asked him to get some ground beef. There was none available ...
    Public Domain
  • Covariation Between Workplace Physical and Psychosocial Stressors Evidence and Implications for Occupational Health Research and Prevention
    Covariation Between Workplace Physical and Psychosocial Stressors: Evidence and Implications for Occupational Health Research and Prevention
    Karasek RA ;
    MacDonald, Leslie A.
    2001/06/10 | National Institute for Occupational Safety and Health (NIOSH)
    There is increasing interest in distinguishing the effects of physical and psychosocial workplace stressors on the aetiology of work-related musculoskeletal disorders (MSD). Modest associations have been found between psychosocial stressors and MSD, such as intensive load, monotonous work and low job control. Interpretation of these results has bee ...
    Public Domain
  • Molecular Mechanism of Tumor Necrosis FactorAlpha Production in 13BGlucan ZymosanActivated Macrophages
    Molecular Mechanism of Tumor Necrosis Factor-Alpha Production in 1–>3-B-Glucan (Zymosan)-Activated Macrophages
    Castranova, Vincent ;
    Frazer DG
    2001/06/08 | National Institute for Occupational Safety and Health (NIOSH)
    The molecular details of 1-->3-beta-glucans, a fungal cell wall component, induced inflammatory responses are not well understood. In the present study, we conducted a systematic analysis of the molecular events leading to tumor necrosis factor (TNF)-alpha production after glucan stimulation of macrophages. We demonstrated that activation of nuclea ...
    Public Domain
  • A Case Study of Bolt Loads in a Trona Mine Retreat Section
    A Case Study of Bolt Loads in a Trona Mine Retreat Section
    Rains R ;
    Signer S
    2001/06/06 | Mining Publications
    Researchers from the Spokane Research Laboratory of the National Institute for Occupational Safety and Health installed 39 instrumented, fully grouted bolts at six test sites in a trona mine retreat panel to study mine roof stability for the improvement of workplace safety. Variations in bolting at each test site included bolt spacing, bolt length, ...
    Public Domain
  • Alternate Methods for Assessment of Vibration Attenuation Performance of Gloves
    Alternate Methods for Assessment of Vibration Attenuation Performance of Gloves
    Dong, Ren G. ;
    Rakheja, S.
    2001/06/05 | National Institute for Occupational Safety and Health (NIOSH)
    The vibration attenuation performance of conventional and anti-vibration gloves has been widely evaluated using the method outlined in ISO-10819 (1996). Many studies have recongnized several shortcomings of the standardized method, specifically the measurement errors caused by geometric misalignments of the palm-held adaptor, and inter- and intra- ...
    Public Domain
  • On the Applications of Biodynamic Models of the Human Hand and Arm
    On the Applications of Biodynamic Models of the Human Hand and Arm
    Boileau, Paul-Émile ;
    Dong, Ren G.
    2001/06/05 | National Institute for Occupational Safety and Health (NIOSH)
    For experimental and analytical assessments of coupled hand-tool systems and vibration attenuation mechanisms, it is highly desirable to develop a hand-arm simulator and mechanical-equivalent models of the human hand and arm. For this purpose, a number of biodynamic models have been proposed to characterized the human hand and arm response to vibra ...
    Public Domain
  • Finite Element Modeling of Fingertip Under Dynamic Loading
    Finite Element Modeling of Fingertip Under Dynamic Loading
    Dong, Ren G. ;
    Rakheja, S.
    2001/06/05 | National Institute for Occupational Safety and Health (NIOSH)
    The responses of a fingertip to impinged vibration have been explored in a number of experimental studies to gain insight into its biodynamic characteristics, peripheral circulation, neurological function, and potential injury mechanisms. These studies have provided practical objective methods for assessing the health effects of prolonged exposure ...
    Public Domain
45361 - 45380 / 82972