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59.876  Articles
1 of 5.989 pages  |  10  records  |  more records»
The immune system is one of the most significant defenses against environmental insults including natural radiation. The purpose of this preliminary study was to assess the effects of high natural radiation to Mamuju residents, by focusing on immune-relat... see more

Three dimensional combined natural convection and thermal radiation in an inclined cubic enclosure with pins attached to the active wall is investigated numerically. The vertical opposing walls are heated and cooled while the other walls are assumed to be... see more

The effective doses received by the general population from the natural radioactivity in the city of São Paulo, Brazil, were assessed from 2007 to 2013, as, apart from the variation from place to place, the background gamma levels in air are not constant ... see more

Background: We intend to study the inhibitory effect of sulfur compound in Ramsar hot spring mineral on tumor-genesis ability of high natural background radiation. Objective: The radioprotective effect of sulfur compounds was previously shown on radiation... see more

This work studied protective material consisting of several metal oxide composites (Pb3O4, WO3, SnO2, and Bi2O3)-natural rubber (NR) for X-ray and gamma-ray shielding. The composites were prepared through open milling and vulcanization processes and furth... see more

Objective: Solar radiation is the most frequent environmental factor influencing the skin, where responsibility for harmful properties are of the ultraviolet radiation. Excessive exposure to ultraviolet radiation significantly increases the risk of occurr... see more

Human beings are constantly exposed to several types of natural radiation. This paper aims to study the total external dose from northwestern Brazilian beach sands. The samples were collected at Prainha in Itacaré, Bahia, and Praia de AreiaPreta in Guarap... see more

This paper presents the experimental investigation results of exterior render of external thermal insulation composite systems (ETICS). The study involved natural (long-term) and artificially accelerated (short-term) ageing including effect of UV radiatio... see more

Man has been exposed to different levels of natural background radiation since the creation of human life. There are inhabited areas around the world with extraordinary levels of natural background radiation. The level of natural radiation in these areas ... see more

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