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Showing 2061 - 2080 of 82737 results
  • An Experimental and Simulated Investigation into the Validity of Unrestricted Blast Wave Scaling Models When Applied to Transonic Flow in Complex Tunnel Environments
    An Experimental and Simulated Investigation into the Validity of Unrestricted Blast Wave Scaling Models When Applied to Transonic Flow in Complex Tunnel Environments
    Doucet DP ;
    Grahl N
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Since the inception of high explosives as an industrial tool, significant efforts have been made to understand the flow of energy from an explosive into its surroundings to maximize work produced while minimizing damaging effects. Many tools have been developed over the past century, such as the Hopkinson-Cranz (H-C) Scaling Formula, to define blas ...
  • Automated Classification of the Phases Relevant to WorkRelated Musculoskeletal Injury Risks in Residential Roof Shingle Installation Operations Using Machine Learning
    Automated Classification of the Phases Relevant to Work-Related Musculoskeletal Injury Risks in Residential Roof Shingle Installation Operations Using Machine Learning
    Breloff SP ;
    Dai F
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Awkward kneeling in sloped shingle installation operations exposes roofers to knee musculoskeletal disorder (MSD) risks. To address the varying levels of risk associated with different phases of shingle installation, this research investigated utilizing machine learning to automatically classify seven distinct phases in a typical shingle installati ...
    Public Domain
  • Facilitating Employee Recovery from Work The Role of LeaderMemberExchange
    Facilitating Employee Recovery from Work: The Role of Leader-Member-Exchange
    Fritz C ;
    Schulte E-M
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Building on Affective Events Theory (AET), this study examined within-person relationships between employee perceptions of day-level leader-member exchange (LMX) and day-level positive affect as well as between positive affect and recovery from work in the evening (i.e., relaxation, mastery, control, and psychological detachment from work). In addi ...
  • Alert at Work Perceptions of Alertness Testing and Recommendations for Practitioners
    Alert at Work? Perceptions of Alertness Testing and Recommendations for Practitioners
    Brossoit RM ;
    Crain TL
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Around-the-clock, 24/7 operations are common in many industries, yet contribute to employee fatigue, which can have grave consequences for worker safety, public health, and the environment. Alertness testing is one option for identifying and mitigating issues related to fatigue at work. We review alertness testing options, including fatigue risk ma ...
  • Effects of Changing Work Environments on Employer Support for Physical Activity During COVID19
    Effects of Changing Work Environments on Employer Support for Physical Activity During COVID-19
    Ablah E ;
    Anderson DR
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    COVID-19 dramatically accelerated evolving changes in the way we define the "work environment" in the United States. In response to COVID-19, many employers have offered increased flexibility for where employees work, including remote (an employee's workstation is at home) and hybrid work (an employee works both at the employer worksite and remotel ...
    Public Domain
  • The Time Course of Health Fitness and Occupational Performance Changes in Recruits Across a Fire Academy
    The Time Course of Health, Fitness, and Occupational Performance Changes in Recruits Across a Fire Academy
    Gerstner GR ;
    Giuliani-Dewig HK
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Purpose: The purpose of this study was to examine the time course of health, fitness, and occupational performance changes in firefighter recruits across a fire academy. Methods: Nineteen recruits (24.9 +/- 4.3 yr; 26.7 +/- 3.1 kg·m-2) had their body composition, balance, vertical jump (VJ) performance, cardiorespiratory fitness (CRF), upper and lo ...
  • The Effect of COVID19 on Workplace Violence in Californias Hospitals An Interrupted Time Series Analysis
    The Effect of COVID-19 on Workplace Violence in California’s Hospitals: An Interrupted Time Series Analysis
    Hong O ;
    Jun J
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Aim: This study used California's unique Workplace Violent Incident Reporting System (WVIRS) to describe changes in workplace violence (WV) exposure for hospital-based healthcare workers during the pandemic. Design: Interrupted time series analysis. Methods: We compared the linear trends in weekly WV incidents reported during the period before the ...
  • Using Machine Learning to Evaluate Coal Geochemical Data with Respect to Dynamic Failures
    Using Machine Learning to Evaluate Coal Geochemical Data with Respect to Dynamic Failures
    Hanson, David R. ;
    Lawson HE
    2023/06/01 | Mining Publications
    Dynamic failure events have occurred in the underground coal mining industry since its inception. Recent NIOSH research has identified geochemical markers that correlate with in situ reportable dynamic event occurrence, although the causes behind this correlative relationship remain unclear. In this study, NIOSH researchers conducted machine learni ...
    Public Domain
  • Mathematical Modeling for Carbon Dioxide Level Within Confined Spaces
    Mathematical Modeling for Carbon Dioxide Level Within Confined Spaces
    DeGennaro CR ;
    Fernando RD
    2023/06/01 | Mining Publications
    Federal regulations require refuge alternatives (RAs) in underground coal mines to provide a life-sustaining environment for miners trapped underground when escape is impossible. A breathable air supply is among those requirements. For built-in-place (BIP) RAs, a borehole air supply (BAS) is commonly used to supply fresh air from the surface. Feder ...
    Public Domain
  • Preventing dump truckrelated injuries and deaths during construction guidance for employers
    Preventing dump truck-related injuries and deaths during construction – guidance for employers
    National Institute for Occupational Safety and Health
    June 2023 | NIOSH Numbered Publications
    "Injuries from dump trucks led to the deaths of 809 construction and extraction workers from 2011 to 2020. Those operating dump trucks or working nearby are at risk of multiple hazards including struck-by, tip-over from loss of vehicle control, crushing, electrical, and falls. This fact sheet gives employers and workers ways to recognize and avoid ...
    Public Domain
  • Intrinsic Factors Contributing to Elevated IntraAbdominal Pressure
    Intrinsic Factors Contributing to Elevated Intra-Abdominal Pressure
    Foreman KB ;
    Hitchcock R
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Pelvic floor disorders affect 24% of US women, and elevated intra-abdominal pressure may cause pelvic injury through musculoskeletal strain. Activity restrictions meant to reduce pelvic strain after traumatic events, such as childbirth, have shown little benefit to patients. Reported high variability in abdominal pressure suggests that technique pl ...
  • A Scoping Review of Sleep Education and Training for Nurses
    A Scoping Review of Sleep Education and Training for Nurses
    Fendinger SL ;
    Hils J
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Background: Shift work and resulting sleep impairment among nurses can increase their risk for poor health outcomes, occupational injuries, and errors due to sleep deficiencies. While sleep education and training for nurses has been recommended as part of a larger fatigue risk management system, little is known about training programs designed spec ...
    Public Domain
  • The Evaluation of Worker Exposure to Airborne Silica Dust During Five OSHA Table I Construction Tasks
    The Evaluation of Worker Exposure to Airborne Silica Dust During Five OSHA Table I Construction Tasks
    Autenrieth DA ;
    Brazile WJ
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Fifty-one (51) personal silica air samples were collected over 13 days on 19 construction employees while they performed five different construction tasks found in the Occupational Safety and Health Administration's (OSHA) respirable crystalline silica standard for construction, Table 1, which specifies engineering, work practice, and respiratory p ...
  • Fluid Balance During Physical Work in the Heat Is Not Modified by the Menstrual Cycle When Fluids Are Freely Available
    Fluid Balance During Physical Work in the Heat Is Not Modified by the Menstrual Cycle When Fluids Are Freely Available
    Ables R ;
    Baker TB
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    We tested the hypothesis that women will be more dehydrated during physical work in the heat in the early follicular phase (EF), compared to the late follicular (LF) and mid-luteal (ML) phases of the menstrual cycle when allowed free access to drink. Twelve healthy, eumenorrheic, unacclimated women (26 +/- 5 y) completed three trials (EF, LF, ML ph ...
  • Elevations in Sweat Sodium Concentration Following IschemiaReperfusion Injury During Passive Heat Stress
    Elevations in Sweat Sodium Concentration Following Ischemia-Reperfusion Injury During Passive Heat Stress
    Baker TB ;
    Freemas JA
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Renal ischemia-reperfusion (I/R) injury results in damage to the renal tubules and causes impairments in sodium [Na+] reabsorption. Given the inability to conduct mechanistic renal I/R injury studies in vivo in humans, eccrine sweat glands have been proposed as a surrogate model given the anatomical and physiological similarities. We tested the hyp ...
  • Occupational Risk Factors for SARSCoV2 Seropositivity in Healthcare Workers Results of a Longitudinal Cohort
    Occupational Risk Factors for SARS-CoV-2 Seropositivity in Healthcare Workers: Results of a Longitudinal Cohort
    Abad Q-A ;
    Fazen LE
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Objective: The aim of the study is to evaluate COVID-19 risk factors among healthcare workers (HCWs) before vaccine-induced immunity. Methods: We conducted a longitudinal cohort study of HCWs (N = 1233) with SARS-CoV-2 immunoglobulin G quantification by ELISA and repeated surveys over 9 months. Risk factors were assessed by multivariable-adjusted l ...
  • WorkRelated Factors Associated with Health and WellBeing of Early Care and Education Workers
    Work-Related Factors Associated with Health and Well-Being of Early Care and Education Workers
    Otten JJ ;
    Peckham T
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Objective: We assessed and examined relationships between the health and working conditions of early care and education workers. Methods: We surveyed early care and education workers (n = 2242) about their socioeconomic characteristics; work organization; psychosocial, physical, and ergonomic exposures; coping behaviors; and health. Results: Nearly ...
  • Promise and Perils of LeaderEmployee CheckIns in Reducing Emotional Exhaustion in Primary Care Clinics QuasiExperimental and Qualitative Evidence
    Promise and Perils of Leader-Employee Check-Ins in Reducing Emotional Exhaustion in Primary Care Clinics: Quasi-Experimental and Qualitative Evidence
    Everson T ;
    Greenspan SA
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Objective: To analyze the role of short (<30 minutes) and frequent (quarterly) check-ins between clinic leaders and employees in reducing emotional exhaustion. Methods: Three interrelated studies were conducted: a 3-year repeated cross-sectional survey at 10 primary care clinics (n=505; we compared emotional exhaustion, perceived stress, and values ...
  • Assault Deterrents and Educators Risk of Physical Assault A CaseControl Study
    Assault Deterrents and Educators’ Risk of Physical Assault: A Case-Control Study
    Feda DM ;
    Gerberich, Susan G.
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    The study purpose was to identify associations between assault deterrent presence in kindergarten through 12th (K-12) grade schools and physical assaults (PAs) against educators. Data collected through a two-phase study identified physical and nonphysical violent events and utilized a nested case-control study to identify PA risk/protective factors ...
  • MultiWalled Carbon Nanotubes Stimulate Arachidonate 5LipoxygenaseDependent M1 Polarization of Macrophages to Promote Proinflammatory Response In Vitro
    Multi-Walled Carbon Nanotubes Stimulate Arachidonate 5-Lipoxygenase-Dependent M1 Polarization of Macrophages to Promote Proinflammatory Response In Vitro
    Kashon M ;
    Lim CS
    2023/06/01 | National Institute for Occupational Safety and Health (NIOSH)
    Polarization of the macrophages regulates the acute inflammation and its resolution in a time-dependent manner. Multi-walled carbon nanotubes (MWCNTs) induce the polarization of M1 and M2 macrophages in mouse lungs. The molecular and cellular pathways leading to the macrophage polarization induced by MWCNTs are incompletely understood. Here we exam ...
    Public Domain
2061 - 2080 / 82737