Results 221 to 230 of about 989,326 (263)

Occupational exposure to natural radiation

Science of The Total Environment, 1985
Natural sources of radiation can make an important contribution to the exposures of people at work. Two areas of interest are work with minerals having elevated concentrations of activity and work in buildings where radon daughter concentrations are elevated.
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HUMAN EXPOSURE TO NATURALLY OCCURRING HYDROQUINONE

Journal of Toxicology and Environmental Health, 1996
Hydroquinone (HQ) is a nonvolatile chemical used in the photographic, rubber, chemical, and cosmetic industries. HQ is also known to occur in nature as the beta-D-glucopyranoside conjugate (arbutin), and free HQ is a known component of cigarette smoke. Low concentrations of HQ have been detected in the urine and plasma of humans with no occupational or
P J, Deisinger, T S, Hill, J C, English
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Double Exposure: Natural and Artificial Ultraviolet Radiation Exposure in Beachgoers

Southern Medical Journal, 2003
Although the beach is a high-risk environment for ultraviolet light exposure and subsequent skin damage, little is known about beachgoer tanning habits outside the beach setting. Our purpose was to evaluate indoor tanning and additional, nonbeach sunlight exposure in a beachgoing population.We conducted an epidemiologic survey.There was more use of ...
Mark A, Ramirez, Molly M, Warthan, Tatsuo, Uchida, Richard F, Wagner   +3 more
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Natural Radiation Exposure

1990
Our knowledge of the different components of natural radiation exposure of man forms a vital scientific base for the assessment of the effects of additional non-natural radiation exposure, to which people are increasingly subject within the context of modern technical and scientific development.
Gert Keller, Hermann Muth
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Rates of exposure to natural, accidental, and suicide deaths

Suicide and Life-Threatening Behavior, 2021
AbstractObjectiveWe expand upon previous research examining the prevalence of exposure to suicide deaths by comparing these to natural and accidental deaths. Furthermore, we examine whether participants are more apt to lie about the cause of death for a suicide than for an accidental or natural death.MethodThe sample consisted of 1,430 respondents who ...
Michael R. Nadorff, Hilary L. DeShong, Shea Golding, Julie Cerel, Chandler J. McDaniel, Ashley R. Pate, Karen Kelley, Maggie D. Walgren   +7 more
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Limitation of exposure to natural radioactivity in Canada

Science of The Total Environment, 1985
The jurisdictional responsibility for natural radioactivity in Canada is divided between the federal and provincial governments. The desire for uniform standards has resulted in the formation of a scientific group to advise governments concerning the desirability of standards for exposure to natural radioactivity.
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Exposure to nature counteracts aggression after depletion

Aggressive Behavior, 2017
Acts of self‐control are more likely to fail after previous exertion of self‐control, known as the ego depletion effect. Research has shown that depleted participants behave more aggressively than non‐depleted participants, especially after being provoked.
Yan Wang, Yihan She, Stephen M. Colarelli, Yuan Fang, Hui Meng, Qiuju Chen, Xin Zhang, Hongwei Zhu   +7 more
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Nature of exposure to chrysotile.

The Annals of occupational hygiene, 1994
Fibres in general, and chrysotile fibres in particular, have properties that set them apart from other airborne particles in terms of their aerodynamic behaviour and the nature of their interactions with cells and fluids in vivo. Their lengths and diameters are primary determinants of their penetration through conductive airways to deposition sites ...
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Nature of induction of tryptophan pyrrolase in cold exposure

Journal of Applied Physiology, 1975
The activity of hepatic tryptophan pyrrolase in rats exposed to cold increased rapidly and reached a maximum of three-fold at 8 h. On continued exposure up to 48 h stress, the activity partly decreased but remained at a level higher than the initial. Withdrawal from the cold stress reversed the change.
Sitaramam, V, Ramasarma, T
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Natural ionizing radiation exposure of the Spanish population

Radiation Protection Dosimetry, 2007
This study investigates the exposure of the Spanish population to natural radiation sources. The annual average effective dose is estimated to be 1.6 mSv, taking into account contributions from cosmic radiation (18%), terrestrial gamma radiation (30%), radon and thoron inhalation (34%) and ingestion (18%).
M, García-Talavera, J L, Matarranz, M, Martínez, R, Salas, L, Ramos   +4 more
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