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https://www.readbyqxmd.com/read/29781773/a-comparison-of-total-inward-leakage-measured-using-sodium-chloride-nacl-and-corn-oil-aerosol-methods-for-air-purifying-respirators
#1
Samy Rengasamy, Ziqing Zhuang, George Niezgoda, Gary Walbert, Robert Lawrence, Brenda Boutin, Judith Hudnall, William P Monaghan, Michael Bergman, Colleen Miller, James Harris, Christopher Coffey
The International Organization for Standardization (ISO) standard 16900-1:2014 specifies the use of sodium chloride (NaCl) and corn oil aerosols, and sulfur hexafluoride gas for measuring total inward leakage (TIL). However, a comparison of TIL between different agents is lacking. The objective of this study was to measure and compare TIL for respirators using corn oil and NaCl aerosols. TIL was measured with 10 subjects donning two models of filtering facepiece respirators (FFRs) including FFP1, N95, P100, and elastomeric half-mask respirators (ERs) in NaCl and corn oil aerosol test chambers, using continuous sampling methods...
May 21, 2018: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/29780078/work-related-injuries-and-fatalities-in-the-geotechnical-site-works
#2
Özge Akboğa Kale, Tuğba Eskişar
Geotechnical site works are comprehensive, and they constitute the first step of the construction process. This study performs data mining of geotechnical works and analyzes the database for the root causes of accidents. The Occupational Safety and Health Administration (OSHA) was chosen for the 1984-2013 time frame with 247 cases. Descriptive statistical analyses were performed to discuss variables such as the end use of the work, project type and cost, soil type and condition, type and degree of injury, cause and type of accident, unsafe acts, and occupation and union status of the victim...
May 19, 2018: Industrial Health
https://www.readbyqxmd.com/read/29776532/worker-safety-and-injury-severity-analysis-of-earthmoving-equipment-accidents
#3
Emrah Kazan, Mumtaz A Usmen
INTRODUCTION: Research on construction worker safety associated with construction equipment has mostly focused on accident type rather than injury severity and the embedded factor relationships. Significant variables and their effects on the degree of injury are examined for earthmoving equipment using data from OSHA. Four types of equipment, backhoe, bulldozer, excavator, and scraper are included in the study. Accidents involving on-foot workers and equipment operators are investigated collectively, as well as separately...
June 2018: Journal of Safety Research
https://www.readbyqxmd.com/read/29765089/e-cigarettes-can-emit-formaldehyde-at-high-levels-under-conditions-that-have-been-reported-to-be-non-averse-to-users
#4
James C Salamanca, Jiries Meehan-Atrash, Shawna Vreeke, Jorge O Escobedo, David H Peyton, Robert M Strongin
E-cigarette aerosol emission studies typically focus on benchmarking toxicant levels versus those of cigarettes. However, such studies do not fully account for the distinct chemical makeup of e-liquids and their unique properties. These approaches often conclude that there are fewer and lower levels of toxins produced by e-cigarettes than by cigarettes. In 2015, we reported the discovery of new hemiacetals derived from the reaction of formaldehyde and the e-liquid solvents. The main finding was that they constituted a significant proportion of potentially undetected formaldehyde...
May 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29741949/osha-1971-bringing-government-to-protect-the-lives-of-industrial-and-farm-workers
#5
Steven Wodka
No abstract text is available yet for this article.
June 2018: American Journal of Public Health
https://www.readbyqxmd.com/read/29728094/impact-of-new-technologies-on-stress-attrition-and-well-being-in-emergency-call-centers-the-nextgeneration-9-1-1-study-protocol
#6
Janet Baseman, Debra Revere, Ian Painter, Scott Stangenes, Michelle Lilly, Randal Beaton, Rebecca Calhoun, Hendrika Meischke
BACKGROUND: Our public health emergency response system relies on the "first of the first responders"-the emergency call center workforce that handles the emergency needs of a public in distress. Call centers across the United States have been preparing for the "Next Generation 9-1-1" initiative, which will allow citizens to place 9-1-1 calls using a variety of digital technologies. The impacts of this initiative on a workforce that is already highly stressed is unknown...
May 4, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29723551/evaluation-of-airborne-asbestos-exposure-from-routine-handling-of-asbestos-containing-wire-gauze-pads-in-the-research-laboratory
#7
Ediberto Garcia, Daniel Newfang, Jayme P Coyle, Charles L Blake, John W Spencer, Leonard G Burrelli, Giffe T Johnson, Raymond D Harbison
Three independently conducted asbestos exposure evaluations were conducted using wire gauze pads similar to standard practice in the laboratory setting. All testing occurred in a controlled atmosphere inside an enclosed chamber simulating a laboratory setting. Separate teams consisting of a laboratory technician, or technician and assistant simulated common tasks involving wire gauze pads, including heating and direct wire gauze manipulation. Area and personal air samples were collected and evaluated for asbestos consistent with the National Institute of Occupational Safety Health method 7400 and 7402, and the Asbestos Hazard Emergency Response Act (AHERA) method...
April 30, 2018: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29625029/how-much-noise-is-an-oral-and-maxillofacial-surgeon-exposed-to
#8
Esha Kulkarni, Yasmine Abdallah, Dennis Hanseman, Deepak G Krishnan
PURPOSE: A common concern among oral and maxillofacial surgeons (OMSs) is progressive hearing loss throughout their careers. Although this has not been critically studied, there could be several factors that contribute to this detriment, including drills, saws, suction, music, and other sounds within the closed operating environment. This study observed the intensity of noise in operating rooms (ORs) and clinical settings during the use of drills, saws, surgical handpieces, and other tools...
March 14, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29564943/review-of-refractory-ceramic-fiber-rcf-toxicity-epidemiology-and-occupational-exposure
#9
L Daniel Maxim, Mark J Utell
This literature review on refractory ceramic fibers (RCF) summarizes relevant information on manufacturing, processing, applications, occupational exposure, toxicology and epidemiology studies. Rodent toxicology studies conducted in the 1980s showed that RCF caused fibrosis, lung cancer and mesothelioma. Interpretation of these studies was difficult for various reasons (e.g. overload in chronic inhalation bioassays), but spurred the development of a comprehensive product stewardship program under EPA and later OSHA oversight...
February 2018: Inhalation Toxicology
https://www.readbyqxmd.com/read/29545611/assessment-of-noise-in-the-airplane-cabin-environment
#10
Christopher D Zevitas, John D Spengler, Byron Jones, Eileen McNeely, Brent Coull, Xiaodong Cao, Sin Ming Loo, Anna-Kate Hard, Joseph G Allen
OBJECTIVE: To measure sound levels in the aircraft cabin during different phases of flight. METHODS: Sound level was measured on 200 flights, representing six aircraft groups using continuous monitors. A linear mixed-effects model with random intercept was used to test for significant differences in mean sound level by aircraft model and across each flight phase as well as by flight phase, airplane type, measurement location and proximity to engine noise. RESULTS: Mean sound levels across all flight phases and aircraft groups ranged from 37...
March 15, 2018: Journal of Exposure Science & Environmental Epidemiology
https://www.readbyqxmd.com/read/29527706/employer-knowledge-of-federal-requirements-for-recording-work-related-injuries-and-illnesses-implications-for-occupational-injury-surveillance-data
#11
Sara Wuellner, Polly Phipps
BACKGROUND: Accuracy of the Bureau of Labor Statistics Survey of Occupational Injuries and Illnesses (SOII) data is dependent on employer compliance with workplace injury and illness recordkeeping requirements. Characterization of employer recordkeeping can inform efforts to improve the data. METHODS: We interviewed representative samples of SOII respondents from four states to identify common recordkeeping errors and to assess employer characteristics associated with limited knowledge of the recordkeeping requirements and non compliant practices...
May 2018: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/29423230/review-of-carcinogenicity-of-hexavalent-chrome-and-proposal-of-revising-approval-standards-for-an-occupational-cancers-in-korea
#12
Jungwon Kim, Sangyun Seo, Yangho Kim, Dae Hwan Kim
Background: The objective of this study is to suggest revised recognition standards for occupational disease due to chromium (VI) by reflecting recent domestic and international research works and considering domestic exposure status with respect to target organs, exposure period, and cumulative exposure dose in relation to the chromium (VI)-induced occupational disease compensation. Methods: In this study, the reports published by major international institutions such as World Health Organization (WHO) International Agency for Research on Cancer (IARC) (2012), Occupational Safety and Health Administration (OSHA) (2006), National Institute for Occupational Safety and Health (NIOSH) (2013), American Conference of Governmental Industrial Hygienists (ACGIH) (2004), National Toxicology Program (NTP) (2014), and Agency for Toxic Substances and Disease Registry (ASTDR) (2012) were reviewed and the recent research works searched by PubMed were summarized...
2018: Annals of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29415273/characterization-of-the-selective-recording-of-workplace-exposure-measurements-into-osha-s-imis-databank
#13
Philippe Sarazin, Igor Burstyn, Laurel Kincl, Melissa C Friesen, Jérôme Lavoué
Objectives: The Integrated Management Information System (IMIS) is the largest multi-industry source of exposure results available in North America. In 2010, the Occupational Safety and Health Administration (OSHA) released the Chemical Exposure Health Data (CEHD) that contains analytical results of samples collected by OSHA inspectors. However, the two databanks only partially overlap, raising suspicion of bias in IMIS data. We investigated the factors associated with selective recording of CEHD results into the IMIS databank...
March 12, 2018: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/29415217/evaluating-the-risk-of-noise-induced-hearing-loss-using-different-noise-measurement-criteria
#14
Benjamin Roberts, Noah S Seixas, Bhramar Mukherjee, Richard L Neitzel
Objectives: This article examines whether the Occupational Safety and Health Administration's (OSHA) average noise level (LAVG) or the National Institute of Occupational Safety and Health's (NIOSH) equivalent continuous average (LEQ) noise measurement criteria better predict hearing loss. Methods: A cohort of construction workers was followed for 10 years (2000-2010), during which time their noise exposures and hearing threshold levels (HTLs) were repeatedly assessed...
March 12, 2018: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/29375194/differences-in-safety-training-among-smaller-and-larger-construction-firms-with-non-native-workers-evidence-of-overlapping-vulnerabilities
#15
Thomas R Cunningham, Rebecca J Guerin, Brenna M Keller, Michael A Flynn, Cathy Salgado, Dennis Hudson
Collaborative efforts between the National Institute for Occupational Safety and Health (NIOSH) and the American Society of Safety Engineers (ASSE) led to a report focusing on overlapping occupational vulnerabilities, specifically small construction businesses employing young, non-native workers. Following the report, an online survey was conducted by ASSE with construction business representatives focusing on training experiences of non-native workers. Results were grouped by business size (50 or fewer employees or more than 50 employees)...
March 2018: Safety Science
https://www.readbyqxmd.com/read/29319052/measurement-of-lung-cancer-tumor-markers-in-a-glass-wool-company-workers-exposed-to-respirable-synthetic-vitreous-fiber-and-dust
#16
Shabnam Abtahi, Mahyar Malekzadeh, Ghafour Nikravan, Abbas Ghaderi
BACKGROUND: Occupational exposures to respirable synthetic vitreous fiber (SVF) and dust are associated with many lung diseases including lung cancer. Low-dose computed tomography is used for screening patients who are highly suspicious of having lung carcinoma. However, it seems not to be cost-effective. Serum biomarkers could be a useful tool for the surveillance of occupational exposure, by providing the possibility of diagnosing lung cancer in its early stages. OBJECTIVE: To determine if serum carcinoembryonic antigen (CEA) and cytokeratin fragment (CYFRA) 21-1 levels in workers exposed more than normal population to respirable SVF and dust may be used as indicators of progression towards lung cancer...
January 2018: International Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29283316/influence-of-facial-hair-length-coarseness-and-areal-density-on-seal-leakage-of-a-tight-fitting-half-face-respirator
#17
Evan L Floyd, J Blake Henry, David L Johnson
BACKGROUND: OSHA regulations state that an employer shall not permit tight-fitting respirators to be worn by employees who have facial hair that comes between the skin and facepiece seal. Studies have shown that facial hair in the face seal zone can increase penetration and decrease the fit factor (FF), although the relationship between the amount and characteristics of facial hair and the increase in penetration is not well quantified. This article examines the influence of facial hair length, areal density, and coarseness on FF for one model of half-face elastomeric negative-pressure air purifying respirator...
April 2018: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/29280774/physical-exposures-work-tasks-and-osha-10-training-among-temporary-and-payroll-construction-workers
#18
Alberto J Caban-Martinez, Katerina M Santiago, Jordan Stillman, Kevin J Moore, Danielle Sierra, Juanita Chalmers, Melissa Baniak, Melissa M Jordan
OBJECTIVE: We characterize and compare the self-reported physical exposures, work tasks, and OSHA-10 training in a non-probabilistic sample of temporary and payroll construction workers. METHODS: In June 2016, a total of 250 payroll and temporary general laborers employed at Florida construction sites completed a survey at the job site as part of the Falls Reported Among Minority Employees (FRAME) study. RESULTS: Workers employed through temp agencies (57...
December 26, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29251690/cost-effective-hearing-conservation-regulatory-and-research-priorities
#19
Robert A Dobie
Hearing conservation programs (HCPs) mandated by the US Occupational Safety and Health Administration (OSHA) cost about $350/worker/year. Are they cost-effective? A cross-sectional model of the US adult population with and without HCPs incorporates (1) the American Medical Association's method for estimating binaural hearing impairment and whole-person impairment; (2) the model of the International Organization for Standardization (ISO) for estimating both age-related and noise-induced hearing loss; and (3) an acceptable cost of $50,000 per quality-adjusted life year...
December 14, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29238452/letter-to-the-editor-licensure-portability-for-occupational-audiologists-is-essential
#20
George R Cook
Occupational audiologists have a crisis in their profession and need advocates. These audiologists are primarily responsible for industrial hearing conservation programs and their compliance with multiple regulations, such as Occupational Safety and Health Administration (OSHA), Mine Safety and Health Administration (MSHA) and the Federal Railroad Administration. Occupational hearing programs, for the most part, are multi-state programs as companies and corporations are national organizations. Also, companies may contract services across state lines as local services may not be desired or available...
2017: International Journal of Telerehabilitation
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