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Spacecraft Maximum Allowable Concentrations for Hydrogen Fluoride
Aerospace Medicine and Human Performance, 2022BACKGROUND: Spacecraft maximum allowable concentrations (SMACs) provide guidance on allowable chemical exposures for nominal and emergency situations aboard spacecraft. SMACs are set to mitigate or preclude potential crew health effects and performance degradation. Hydrogen fluoride (HF) gas is highly irritating.
Chiu-Wing, Lam, Valerie E, Ryder
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Spaceflight Maximum Allowable Concentrations for Ethyl Acetate
Aerospace Medicine and Human Performance, 2023INTRODUCTION: Ethyl acetate is a simple organic compound that occurs naturally and is used industrially as a solvent. It has been detected in the ISS atmosphere and is known to off-gas from building materials. As NASA astronauts have been and will be exposed to ethyl acetate during space missions, Spaceflight Maximum Allowable Concentrations (SMACs ...
E Spencer, Williams, Valerie E, Ryder
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The Case for Maximum Allowable Concentrations
American Industrial Hygiene Association Quarterly, 1948 Hervey B. Elkins
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Maximum Allowable Concentrations of Mixtures
American Industrial Hygiene Association Journal, 1962Abstract In evaluating exposure to mixtures of toxic substances, conclusions are usually based solely on the concentration of the most toxic or major component. This procedure is in general logical only when the different substances act independently.
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Spacecraft Maximum Allowable Concentrations for Manganese Compounds in Mars Dust
Aerospace Medicine and Human Performance, 2019INTRODUCTION: Exposure to excess manganese (Mn) can cause multiple toxicological outcomes in humans, most notably neurotoxicity. Ample epidemiological evidence suggests that chronic, low-level exposure causes subclinical cognitive effects. Because NASA astronauts will be exposed to Mars regolith, Spacecraft Maximum Allowable Concentrations (SMACs ...
Amelia A Romoser +2 more
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Assignment of Skin Notation for Maximum Allowable Concentration (MAC) List in Poland
Applied Occupational and Environmental Hygiene, 2002Organic chemicals from the Polish maximum allowable concentration (MAC) list were analyzed for skin notation. It can be concluded that the dermal dose LD50s determined on experimental animals ought to be adopted as the fundamental criterion for providing a substance with the percutaneous absorption notation in the MAC list.
Sławomir Czerczak +1 more
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Pitfalls in Using Maximum Allowable Concentrations in air Pollution
American Industrial Hygiene Association Quarterly, 1955(1955). Pitfalls in Using Maximum Allowable Concentrations in air Pollution. American Industrial Hygiene Association Quarterly: Vol. 16, No. 3, pp. 230-234.
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Basis of the Maximum Allowable Concentrations for Occupational Exposure
New England Journal of Medicine, 1961THE principle that employers should take reasonable steps to prevent occupational disease in workers under their jurisdiction has long been recognized. To prevent illness caused by inhalation of harmful dusts, fumes or gases, current practice is to limit the concentration of such impurities in the working environment to harmless levels.
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Resources, Conservation and Recycling, 2003
A rational approach is often sought for relating the maximum permissible fractional replacement of traditional materials with construction-quality waste materials in constructed facilities. The development of such an approach hinges on the ability to back-calculate contaminant release rates that correspond to risk-based concentration limits in soil ...
Frederick Hooper +2 more
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A rational approach is often sought for relating the maximum permissible fractional replacement of traditional materials with construction-quality waste materials in constructed facilities. The development of such an approach hinges on the ability to back-calculate contaminant release rates that correspond to risk-based concentration limits in soil ...
Frederick Hooper +2 more
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