Výsledky vyhledávání - "Robert B. Lawrence"

Particle transfer and adherence to human skin compared with cotton glove and pre-moistened polyvinyl alcohol exposure sampling substrates

Autor: Elizabeth D. Arnold, Robert B. Lawrence, Eleanor E. Wade, M. Abbas Virji, Aleksandr B. Stefaniak

Publikováno v: J Environ Sci Health A Tox Hazard Subst Environ Eng

Measurement of skin exposure to particles using interception (e.g., cotton gloves) and removal (e.g., wiping) sampling techniques could be inaccurate because these substrates do not have the same topography and adhesion characteristics as skin. The o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c1ed6461e000104d3a6c4fd3d89e6de
https://doi.org/10.1080/10934529.2021.1899524

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Evaluation of total inward leakage for NIOSH-approved elastomeric half-facepiece, full-facepiece, and powered air-purifying respirators using sodium chloride and corn oil aerosols

Autor: Matthew Horvatin, Samy Rengasamy, Patrick L. Yorio, Ziqing Zhuang, Christopher C. Coffey, Robert B. Lawrence, Caitlin McClain, James R. Harris, Brenda Boutin

Publikováno v: J Occup Environ Hyg

Recently, total inward leakage (TIL) for filtering facepiece and elastomeric half-mask respirators (EHRs) was measured according to the International Organization for Standardization (ISO) test method standard 16900–1:2014 that showed larger TIL fo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::418203de88f217d809a462eae61e58fc
https://pubmed.ncbi.nlm.nih.gov/34038318

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Characterization of chemical contaminants generated by a desktop fused deposition modeling 3-dimensional Printer

Autor: Matthew G. Duling, Aleksandr B. Stefaniak, Bean T. Chen, M. Abbas Virji, Ryan F. LeBouf, Timothy Nurkewicz, J. Raymond Wells, Diane Schwegler-Berry, Stephen B. Martin, Alyson Johnson, Jason E. Ham, Robert B. Lawrence, Jinghai Yi

Publikováno v: Journal of Occupational and Environmental Hygiene. 14:540-550

Printing devices are known to emit chemicals into the indoor atmosphere. Understanding factors that influence release of chemical contaminants from printers is necessary to develop effective exposure assessment and control strategies. In this study,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::408e9e6d2fa3ecb8aaaf45feee5554b5
https://doi.org/10.1080/15459624.2017.1302589

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Assessment of respirator fit capability test criteria for full-facepiece air-purifying respirators

Autor: Samy Rengasamy, Susan Shuhong Xu, James R. Harris, Robert B. Lawrence, Michael S. Bergman, Brenda Boutin, Ziging Zhuang

An ASTM International subcommittee on Respiratory Protection, F23.65 is currently developing a consensus standard for assessing respirator fit capability (RFC) criteria of half-facepiece air-purifying particulate respirators. The objective of this st

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5eb881f99a86e0e4b4fb508d21e05248

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A comparison of total inward leakage measured using sodium chloride (NaCl) and corn oil aerosol methods for air-purifying respirators

Autor: James R. Harris, Christopher C. Coffey, George Niezgoda, Brenda Boutin, William P. Monaghan, Gary Walbert, Ziqing Zhuang, Robert B. Lawrence, Judith B. Hudnall, Samy Rengasamy, Colleen Miller, Michael S. Bergman

Publikováno v: Journal of occupational and environmental hygiene. 15(8)

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 bet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3dcd51f90b3af5120fb1d7d63ea107f6
https://pubmed.ncbi.nlm.nih.gov/29781773

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Dermal exposure potential from textiles that contain silver nanoparticles

Autor: Eleanor E. Wade, Treye A. Thomas, M. Abbas Virji, Mathew G. Duling, Robert B. Lawrence, Ryan F. LeBouf, Aleksandr B. Stefaniak

Publikováno v: International Journal of Occupational and Environmental Health. 20:220-234

Factors that influence exposure to silver particles from the use of textiles are not well understood.The aim of this study was to evaluate the influence of product treatment and physiological factors on silver release from two textiles.Atomic and abs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f61c5ce83c646433d512b51084c6af8
https://doi.org/10.1179/2049396714y.0000000070

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Comparison of Performance of Three Different Types of Respiratory Protection Devices

Autor: Catherine A. Calvert, Matthew G. Duling, Robert B. Lawrence, Christopher C. Coffey

Publikováno v: Journal of Occupational and Environmental Hygiene. 3:465-474

Respiratory protection is offered to American workers in a variety of ways to guard against potential inhalation hazards. Two of the most common ways are elastomeric N95 respirators and N95 filtering-facepiece respirators. Some in the health care ind

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39b7ad809e5a7971d031a755b8a96b31
https://doi.org/10.1080/15459620600829211

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Fitting Characteristics of Eighteen N95 Filtering-Facepiece Respirators

Autor: Paul A. Jensen, Ziqing Zhuang, Catherine A. Calvert, Christopher C. Coffey, Donald L. Campbell, Robert B. Lawrence

Publikováno v: Journal of Occupational and Environmental Hygiene. 1:262-271

Four performance measures were used to evaluate the fitting characteristics of 18 models of N95 filtering-facepiece respirators: (1) the 5th percentile simulated workplace protection factor (SWPF) value, (2) the shift average SWPF value, (3) the h-va

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa86fd0ab37b88e901921d605816782c
https://doi.org/10.1080/15459620490433799

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Correlation Between Quantitative Fit Factors and Workplace Protection Factors Measured in Actual Workplace Environments at a Steel Foundry

Autor: Paul A. Jensen, Ziqing Zhuang, Warren R. Myers, Donald L. Campbell, Christopher C. Coffey, Robert B. Lawrence

Publikováno v: AIHA Journal. 64:730-738

Past studies have found little or no correlation between workplace protection factors (WPFs) and quantitative fit factors (FFs). This study investigated the effect of good- and poor-fitting half-facepiece, air-purifying respirators on protection in a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dfa4d8a10867177412632fc1f2324c15
https://doi.org/10.1080/15428110308984867

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Release of beryllium from mineral ores in artificial lung and skin surface fluids

Autor: Aleksandr B. Stefaniak, M. Abbas Virji, Steve J. Chipera, Matthew G. Duling, Robert B. Lawrence

Publikováno v: Environmental geochemistry and health. 34(3)

Exposure to some manufactured beryllium compounds via skin contact or inhalation can cause sensitization. A portion of sensitized persons who inhale beryllium may develop chronic beryllium disease (CBD). Little is understood about exposures to natura

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5ad36de472815eeb3a7836778b4df9e
https://pubmed.ncbi.nlm.nih.gov/21866318

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