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Showing 3301 - 3320 of 82972 results
  • Effects of Unilateral Eye Closure on Middle Ear Muscle Contractions
    Effects of Unilateral Eye Closure on Middle Ear Muscle Contractions
    Ahroon WA ;
    Deiters KK
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    Middle ear muscle contractions (MEMCs) are most commonly considered a response to high-level acoustic stimuli. However, MEMCs have also been observed in the absence of sound, either as a response to somatosensory stimulation or in concert with other motor activity. The relationship between MEMCs and non-acoustic sources is unclear. This study exami ...
  • National Personal Protective Technology Laboratory 2022
    National Personal Protective Technology Laboratory [2022]
    National Institute for Occupational Safety and Health
    2022/10/01 | NIOSH Numbered Publications
    This document has been withdrawn and the latest information can be found https://www.cdc.gov/niosh/divisions-offices/personal-protective-tech-lab.html. This updated fact sheet presents NPPTL's current research areas and staffing. The National Personal Protective Technology Laboratory (NPPTL) is a Division of the National Institute for Occupational ...
    Public Domain
  • Military Service and COPD Risk
    Military Service and COPD Risk
    Blanc PD ;
    Schmajuk G
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    To the Editor: Occupational exposures account for 15% of the population-attributable risk of COPD. This estimate is based on a robust number of population-based studies across multiple occupations. Military service, however, has not been considered as an occupational contributor to COPD risk. Such military service is potentially important because i ...
  • Nursing Home Adoption of CDC and ASHRAE COVID19 Built Environment Recommendations A Characterization Study of Colorado Nursing Home Facilities
    Nursing Home Adoption of CDC and ASHRAE COVID-19 Built Environment Recommendations: A Characterization Study of Colorado Nursing Home Facilities
    Czaja, Christopher ;
    Goldman, Cedra
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    Background: During the COVID-19 pandemic, the Centers for Disease Control and Prevention (CDC) and ASHRAE provided infection control recommendations for the built environments and ventilation systems of nursing homes (NHs). The level of adoption of the suggested strategies is unknown, as little information has been obtained from NHs identifying the ...
  • Why Are Noise Exposure Guidelines So Complex
    Why Are Noise Exposure Guidelines So Complex?
    Carroll Y ;
    Eichwald J
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    Almost all noise-induced hearing loss (NIHL) is preventable. However, once acquired, NIHL is permanent and irreversible. In addition to hearing loss, evidence shows that prolonged or repeated exposure to high levels of noise is associated with other health effects, such as heart disease, hypertension, and insomnia. The World Health Organization (WH ...
    Public Domain
  • The Health Status of Hispanic Agricultural Workers in Georgia and Florida
    The Health Status of Hispanic Agricultural Workers in Georgia and Florida
    Chicas RC ;
    Elon L
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    To examine the health status of Hispanic agricultural workers in Florida and Georgia. Health data from agricultural workers in the Farm Worker Family Health Program (June 2019) and research studies in Florida (May 2015 and May 2019) were examined. Data from 728 agricultural workers were collected through sociodemographic questionnaire and clinical ...
  • Development of a RealTime Respirable Coal Dust and Silica Dust Monitoring Instrument Based on Photoacoustic Spectroscopy
    Development of a Real-Time Respirable Coal Dust and Silica Dust Monitoring Instrument Based on Photoacoustic Spectroscopy
    Arnott WP ;
    Firouzkouhi H
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    We report the first spectral photoacoustic measurements of silica, coal, and kaolinite dust absorption coefficients from 11 to 13 µm at 5 nm resolution made with a tunable quantum cascade laser. This is important because airborne silica dust and coal dust within mining environments continue to be a problem for mine workers and staff due to their se ...
  • Assessing Residential Indoor and Outdoor Bioaerosol Characteristics Using the Ultraviolet LightInduced FluorescenceBased Wideband Integrated Bioaerosol Sensor
    Assessing Residential Indoor and Outdoor Bioaerosol Characteristics Using the Ultraviolet Light-Induced Fluorescence-Based Wideband Integrated Bioaerosol Sensor
    Addor YS ;
    Baumgardner D
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    We assessed and compared indoor and outdoor residential aerosol particles in a third-floor apartment from August through September 2020. The measurements were conducted using a direct-reading ultraviolet light-induced fluorescence (UV-LIF) wideband integrated bioaerosol spectrometer (WIBS). It measures individual particle light scattering and fluor ...
  • Occupation and Semen Parameters in a Cohort of Fertile Men
    Occupation and Semen Parameters in a Cohort of Fertile Men
    Meyer, John D. ;
    Brazil, Charlene
    2022/10/01 | J Occup Environ Med 2022 Oct; 64(10):831-838 | National Institute for Occupational Safety and Health (NIOSH)
    Objective: We examined associations between occupation and semen parameters in demonstrably fertile men in the Study for Future Families. Methods: Associations of occupation and workplace exposures with semen volume, sperm concentration, motility, and morphology were assessed using generalized linear modeling. Results: Lower sperm concentration and ...
    Supporting Files
  • Differences in fine particle exposure and estimated pulmonary ventilation rate with respect to work tasks of wildland firefighters at prescribed burns a repeated measures study
    Differences in fine particle exposure and estimated pulmonary ventilation rate with respect to work tasks of wildland firefighters at prescribed burns: a repeated measures study.
    Adetona AM ;
    Adetona O
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    Wildland firefighters (WLFFs) are exposed to a mixture of chemicals found in wildland fire smoke and emissions from nonwildland-fuel smoke sources such as diesel. We investigated compositional differences in exposure to particulate matter and explored differences in ventilation rate and potential inhaled dose relative to the work tasks of WLFFs. Re ...
  • Biomarkers of HeatstrokeInduced Organ Injury and Repair
    Biomarkers of Heatstroke-Induced Organ Injury and Repair
    Bouchama A ;
    Davis MS
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    Classic and exertional heatstroke cause acute injury and damage across numerous organ systems. Moreover, heatstroke survivors may sustain long-term neurological, cardiovascular and renal complications with a persistent risk of death. In this context, biomarkers, defined as biological samples obtained from heatstroke patients, are needed to detect e ...
  • The association between forceful hand exertions and musculoskeletal disorders of the neck and shoulder a prospective cohort study of US manufacturing workers
    The association between forceful hand exertions and musculoskeletal disorders of the neck and shoulder: a prospective cohort study of US manufacturing workers.
    Feng L ;
    Harris-Adamson C
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    Objective: To estimate associations between biomechanical exposures and workplace neck and shoulder musculoskeletal disorders (NSMSDs) in a prospective cohort. Methods: Manufacturing workers (N=349) were followed for 28 months. Biomechanical exposures were collected on each individual and physical exams were performed every 4 months. Prevalent case ...
  • Deciphering Fatigue Risk Management Systems A Holistic Approach to Mitigating WorkRelated Fatigue
    Deciphering Fatigue Risk Management Systems: A Holistic Approach to Mitigating Work-Related Fatigue
    Dawson D ;
    Sprajcer M
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    Approximately 40 million workers in the United States (nearly 30 percent of the workforce) are employed in nonstandard work schedules such as shiftwork and extended work hours. These types of schedules are common and often required in industries such as transport, healthcare, mining, oil and gas, utilities, public safety, and information technology ...
    Public Domain
  • NIOSH eNews Volume 20 Number 6 October 2022
    NIOSH eNews: Volume 20, Number 6, October 2022
    National Institute for Occupational Safety and Health
    10/01/2022 | NIOSH eNews
    No Description
    Supporting Files Public Domain
  • NonRoutine Environmental Hazards Encountered by National Park First Responders
    Non-Routine Environmental Hazards Encountered by National Park First Responders
    Handy R ;
    Loder R
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    The diversity of areas located within the National Park system presents a series of challenges to emergency responders within the parks. More than 20,000 full-time employees work in the National Park Service (NPS) as "park rangers," a position with assigned duties including emergency response, trail guiding, law enforcement, and other assignments t ...
  • The Trichloroethylene Metabolite S12DichlorovinylLCysteine Inhibits LipopolysaccharideInduced Inflammation Transcriptomic Pathways and Cytokine Secretion in a Macrophage Cell Model
    The Trichloroethylene Metabolite S-(1,2-Dichlorovinyl)-L-Cysteine Inhibits Lipopolysaccharide-Induced Inflammation Transcriptomic Pathways and Cytokine Secretion in a Macrophage Cell Model
    Bakulski KM ;
    Boldenow E
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    Studies have shown that the trichloroethylene metabolite S-(1,2-dichlorovinyl)-l-cysteine (DCVC) inhibits cytokine secretion in pathogen stimulated fetal membrane tissue but little is known about the mechanism for these effects, including which cell types or transcriptomic pathways are impacted. Macrophages play a critical role in fetal membrane im ...
  • Assessment of Floor Heave Associated with Bumps in a Longwall Mine Using the Discrete Element Method
    Assessment of Floor Heave Associated with Bumps in a Longwall Mine Using the Discrete Element Method
    Kim BH ;
    Larson, Mark K.
    2022/10/01 | Mining Publications
    This study was developed as part of an effort by the National Institute for Occupational Safety and Health (NIOSH) to better understand rock-mass behavior in longwall coal mines in highly stressed, bump-prone ground. The floor-heave and no-floor-heave phenomena at a western US coal mine could not be properly simulated in numerical models using conv ...
    Public Domain
  • Investigation of Explosion Hazard in Longwall Coal Mines by Combining CFD with a 140thScale Physical Model
    Investigation of Explosion Hazard in Longwall Coal Mines by Combining CFD with a 1/40th-Scale Physical Model
    Bogin GE Jr. ;
    Brune, Jürgen F.
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    To evaluate methane explosion hazards in longwall coal mines, a CFD model was developed along with a 1/40th-scale, optically accessible model of an underground longwall coal mining section. In this project, CFD models assisted in the design of the physical model to ensure specifications were met for accurately representing the scaling physics as we ...
  • Systems and Subversion A Review of Structural Violence and ImMigrant Health
    Systems and Subversion: A Review of Structural Violence and Im/Migrant Health
    Cherryhomes E ;
    Gulliot-Wright S
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    Im/migrants in the United States are at heightened risk for a host of adverse behavioral, mental, and physical health disparities, which increase their vulnerability to disease and death. Our review of the literature shows how their health disparities are linked to structural factors that can limit their access to political, legal, and economic res ...
  • Stochastic Continuous Modeling for Pillar Stress Estimation and Comparison with 2D Numerical and Analytical Solutions in an Underground Stone Mine
    Stochastic Continuous Modeling for Pillar Stress Estimation and Comparison with 2D Numerical, and Analytical Solutions in an Underground Stone Mine
    Hazzard J ;
    Karfakis M
    2022/10/01 | National Institute for Occupational Safety and Health (NIOSH)
    Pillar collapses are events that due to their severe consequences can be classified as high risk. The design of pillars in underground room-and-pillar operations should migrate to risk-based design approaches. The authors of this work proposed a risk-based pillar design methodology that integrates stochastic discrete element modeling for pillar str ...
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