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Showing 3881 - 3900 of 82972 results
  • Aerosol Analysis Using Handheld Raman Spectrometer OnSite Quantification of Trace Crystalline Silica in Workplace Atmospheres
    Aerosol Analysis Using Handheld Raman Spectrometer: On-Site Quantification of Trace Crystalline Silica in Workplace Atmospheres
    Breitenstein, Michael J. ;
    Johnson B
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    A method for aerosol chemical analysis using handheld Raman spectrometer has been developed and its application to measurement of crystalline silica concentration in workplace atmosphere is described. The approach involves collecting aerosol as a spot sample using a wearable optical aerosol monitor, followed by direct-on-filter quantitative analysi ...
    Public Domain
  • Diesel Aerosols in an Underground Coal Mine
    Diesel Aerosols in an Underground Coal Mine
    Barone T ;
    Bugarski, Aleksandar D.
    2022/06/01 | Mining Publications
    The case study was conducted in an underground coal mine to characterize submicron aerosols at a continuous miner (CM) section, assess the concentrations of diesel aerosols at the longwall (LW) section, and assess the exposures of selected occupations to elemental carbon (EC) and total carbon (TC). The results show that aerosols at the CM sections ...
    Public Domain
  • Effortreward imbalance among a sample of formal US solid waste workers
    Effort-reward imbalance among a sample of formal US solid waste workers.
    Gibbs SG ;
    Le AB
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Background: Solid waste workers are exposed to a plethora of occupational hazards and may also experience work-related stress. Our study had three specific hypotheses: (1) waste workers experience effort-reward imbalance (ERI) with high self-reported effort but low reward, (2) unionized workers experience greater ERI, and (3) workers with higher in ...
  • Metalworking fluid exposure and stroke mortality among US autoworkers
    Metalworking fluid exposure and stroke mortality among US autoworkers.
    Arteaga D ;
    Chen KT
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Although air pollution is an important risk factor for stroke, few studies have considered the impact of workplace exposure to particulate matter (PM). We examined implications of exposure to PM composed of metalworking fluids (MWFs) for stroke mortality in the United Autoworkers-General Motors cohort. Cox proportional hazards models with age as th ...
  • Numerical Analysis of the Effect of Bedding Plane Strength on Laminated Roof Failure in Underground Entries Using Coupled FDMDEM
    Numerical Analysis of the Effect of Bedding Plane Strength on Laminated Roof Failure in Underground Entries Using Coupled FDM-DEM
    Mishra B ;
    Shi Q
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Numerical simulations have been used to investigate roof fall in the past decades. When compared to the continuum-based methods, the discrete element method has been well recognized for its excellent performance in simulating large strain problems and the fracturing processes in the rock mass. However, the discrete element method has its limitation ...
  • Stress redistribution in a longwall yield pillar a comparison between active seismic tomography and theory
    Stress redistribution in a longwall yield pillar - a comparison between active seismic tomography and theory.
    Coons DJ ;
    McCarter MK
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Gate road yield pillars are subject to increases in stress as the longwall face advances through a panel. Safe, efficient underground mining is dependent upon proper pillar sizing. Theoretical models of pillar loading are well accepted, and geotechnical measurements, including convergence monitoring, have provided important information about stress ...
  • NIOSH Skin Notation SK Profile Diacetyl and 23Pentanedione CAS No 431038 600146
    NIOSH Skin Notation (SK) Profile: Diacetyl and 2,3-Pentanedione [CAS No. 431-03-8; 600-14-6]
    Hudson, Naomi L.
    2022/06/01 | NIOSH Numbered Publications
    As the largest organ of the body, the skin performs multiple critical functions, such as serving as the primary barrier to the external environment. For this reason, the skin is often exposed to potentially hazardous agents, including chemicals, which may contribute to the onset of a spectrum of adverse health effects ranging from localized damage ...
    Public Domain
  • Multimorbidity and Employment Outcomes Among MiddleAged US Cancer Survivors
    Multimorbidity and Employment Outcomes Among Middle-Aged US Cancer Survivors
    Ekenga CC ;
    Kim B
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Objective: The objective of this study was to evaluate the relationship between multimorbidity and subsequent two-year employment outcomes among middle-aged United States (US) cancer survivors. In addition, we examined whether the relationship differed by survivor characteristics. Methods: Data of 633 cancer survivors (ages 51-64) from the 2014 Hea ...
  • NIOSH Skin Notation SK Profile betaChloroprene CAS No 126998
    NIOSH Skin Notation (SK) Profile: beta-Chloroprene [CAS No. 126-99-8]
    Hudson, Naomi L.
    2022/06/01 | NIOSH Numbered Publications
    As the largest organ of the body, the skin performs multiple critical functions, such as serving as the primary barrier to the external environment. For this reason, the skin is often exposed to potentially hazardous agents, including chemicals, which may contribute to the onset of a spectrum of adverse health effects ranging from localized damage ...
    Public Domain
  • Experimental Study of Improving a Mine Ventilation Network Model Using Continuously Monitored Airflow
    Experimental Study of Improving a Mine Ventilation Network Model Using Continuously Monitored Airflow
    Bahrami D ;
    Thomas RA
    2022/06/01 | Mining Publications
    A calibrated and well-tuned ventilation network model plays a critical role in mine ventilation planning, optimization, and ventilation control. Moreover, it is critical to the mine fire simulation program as well since the fire simulation is built upon the mine ventilation model. The contaminants generated from a fire are transported by airflows t ...
    Public Domain
  • Fire size and response time predictions in underground coal mines using neural networks
    Fire size and response time predictions in underground coal mines using neural networks.
    Barros-Daza MJ ;
    Hodges JL
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    The prediction of the coal mine fire response time, defined as the remaining time before conditions at attack positions grow untenable for firefighters, plays a vital role in the decision-making process during a mine fire scenario. The knowledge of the response time along with the fire size, fire location, and arrival time could allow for the most ...
  • Respirable dust constituents and particle size a case study in a thinseam coal mine
    Respirable dust constituents and particle size: a case study in a thin-seam coal mine.
    Gonzalez J ;
    Jaramillo L
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    This paper presents a case study of respirable dust characterization in a thin-seam coal mine in southern West Virginia. Samples were collected in the intake, near the feeder breaker, and downwind of an active roof bolter, as well as in three downwind locations from the continuous miner during four separate cuts. The dust was analyzed using: scanni ...
  • Responding to Natural and Industrial Disasters Partnerships and Lessons Learned
    Responding to Natural and Industrial Disasters: Partnerships and Lessons Learned
    An Han, Heyreoun ;
    Bondy, Melissa L.
    2022/06/01 | Disaster Med Public Health Prep 2022 Jun; 16(3):885-888 | National Institute for Occupational Safety and Health (NIOSH)
    Objectives: The aim of this study was to provide insights learned from disaster research response (DR2) efforts following Hurricane Harvey in 2017 to launch DR2 activities following the Intercontinental Terminals Company (ITC) fire in Deer Park, Texas, in 2019. Methods: A multidisciplinary group of academic, community, and government partners launc ...
    Supporting Files
  • In the eye of the beholder a daily diary investigation of appraisals of illegitimate tasks
    In the eye of the beholder: a daily diary investigation of appraisals of illegitimate tasks.
    Wald DR
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Traditional research on illegitimate tasks has focused on two dimensions, unreasonable tasks and unnecessary tasks, and has assumed that threat appraisal is the underlying mechanism explaining their effects. This study introduced a revised three-dimensional framework of illegitimate tasks that consists of promoting unreasonable tasks, demoting unre ...
  • A Comprehensive Roof Bolter Drilling Control Algorithm for Enhancing Energy Efficiency and Reducing Respirable Dust 2022
    A Comprehensive Roof Bolter Drilling Control Algorithm for Enhancing Energy Efficiency and Reducing Respirable Dust [2022]
    Jiang H ;
    Luo Y
    2022/06/01 | Mining Publications
    A roof bolting drilling operation in an underground coal mine can expose the operator to a high concentration of respirable coal and crystalline silica dusts (smaller than 10 µm). Overexposure of high-level quartz dust for a roof bolter operator can lead to the development of silicosis in as little as three years. This study proposes a drilling con ...
    Public Domain
  • Occupational Health Within the Bounds of Primary Care Factors Shaping the Health of Latinao Immigrant Workers in Federally Qualified Health Centers
    Occupational Health Within the Bounds of Primary Care: Factors Shaping the Health of Latina/o Immigrant Workers in Federally Qualified Health Centers
    Haq C ;
    LeBrón AMW
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Background: Many workers seek care for work-related medical conditions in primary care settings. Additionally, occupational medicine training is not consistently addressed in primary care professional training. These patterns raise concerns about the health outcomes of low-wage Latina/o immigrant workers who make use of primary care settings to obt ...
  • Statistical Brief for the Behavioral Risk Factor Surveillance System BRFSS Industry and Occupation Optional Model 2022
    Statistical Brief for the Behavioral Risk Factor Surveillance System (BRFSS) Industry and Occupation Optional Model 2022
    Boal, Winifred L. ;
    Silver, Sharon R.
    2022/06/01 | NIOSH Numbered Publications
    The purpose of this document is to provide guidance for BRFSS coordinators and researchers who would like to analyze data collected through the Behavioral Risk Factor Surveillance System (BRFSS) Industry and Occupation optional module. [Description provided by NIOSH]
    Public Domain
  • Mechanical Property Alterations Across Coal Matrix Due to WaterCO2 Treatments A MicrotoNano Scale Experimental Study
    Mechanical Property Alterations Across Coal Matrix Due to Water-CO2 Treatments: A Micro-to-Nano Scale Experimental Study
    Liu A ;
    Liu S
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    CO2 sequestration in geological coal formations is a promising pathway to store a huge amount of CO2 due to a strong CO2 affinity on coal. It has been reported that CO2 sorption can cause a strength reduction of coals. However, the mechanism-based understandings of CO2-coal interactions induced alterations are still challenging in micro-to-nano sca ...
  • Evaluation of the Efficacy of an Intersection Conflict Warning System at TwoWay StopControlled Rural Intersections DifferenceinDifferences and TripleDifference Analytical Approaches
    Evaluation of the Efficacy of an Intersection Conflict Warning System at Two-Way Stop-Controlled Rural Intersections: Difference-in-Differences and Triple-Difference Analytical Approaches
    Erickson DJ ;
    Gerberich, Susan G.
    2022/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Objective: Intersection conflict warning systems (ICWSs) have been implemented at high-risk two-way stop-controlled intersections to prevent right-angle crashes and associated injuries. This study involved investigation of the impacts of ICWSs on crash reductions. Methods: The study used a quasi-experimental design to analyse the potential causal r ...
  • NIOSH Skin Notation SK Profile Dioxane
    NIOSH Skin Notation (SK) Profile: Dioxane
    Hudson, Naomi L.
    2022/06/01 | NIOSH Numbered Publications
    As the largest organ of the body, the skin performs multiple critical functions, such as serving as the primary barrier to the external environment. For this reason, the skin is often exposed to potentially hazardous agents, including chemicals, which may contribute to the onset of a spectrum of adverse health effects ranging from localized damage ...
    Public Domain
3881 - 3900 / 82972