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2 edition of Limitation schemes to decrease the radon daughters in indoor air. found in the catalog.

Limitation schemes to decrease the radon daughters in indoor air.

Gun Astri Swedjemark

Limitation schemes to decrease the radon daughters in indoor air.

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Published .
Written in English


Edition Notes

StatementSwedjemark, Gun Astri.
The Physical Object
Pagination$0.00 C.1.
ID Numbers
Open LibraryOL17588298M


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Limitation schemes to decrease the radon daughters in indoor air. by Gun Astri Swedjemark Download PDF EPUB FB2

Swedish limitation schemes to decrease Rn daughters in indoor air. Swedjemark GA. The limitation schemes to decrease Rn daughter concentrations in Swedish homes are described.

The application of the Swedish provisional limitation scheme in use since is also reported and compared with international and national recommendations in other Gun Astri Swedjemark has written: 'Limitation schemes to decrease the radon daughters in indoor air'   The classifica- tion of the ground is based, among other things, on the radon concentration in the soil air.

The Board of Building and Planning has given examples of radon-safe and radon-protective build- J Fig 6. Suction of radon in order to decrease the air pressure under the bottom slab (from Clavensjb and Kumlin ).

=, f =mm '. Gun Astri Swedjemark has written: 'Limitation schemes to decrease the radon daughters in indoor air' How heavy is radon. Although the atomic mass number of radon is often given asthere are   The Science of the Total Environm L.

QUINDOS et al. Stranden E., Kolstad A. and Lind B. () The Swedjemark G. () Swedish limitation schemes to influence of moisture and temperature on radon exha- decrease Rn daughters in indoor air.

Health Phys. 51, lation. Radiat. Prot. Dosim. 7, For example, in the United States roughly 5 to 20 lung cancer deaths per year are now attributed to indoor radon. (1) Consistent with this, the effective dose equivalent from indoor radon is larger than the dose from any other radiation source for most people in temperate :// Soil vapor, ambient air, and indoor air samples were collected for radon to determine a slab-specific attenuation factor that was not influenced by background concentrations of :// The International Standard Book Number.

ISSN: The International Standard Serial Number Results of measuring specific actividies of radon daughters in outdoor air. (In Czech). Vysledky mereni objemovych aktivit dcerinych produktu radonu ve venkovnim vzduchu. Experience from indoor radon-daughter limitation schemes in n. Int    Radon.

The main source of indoor radon is its immediate parent radium in the ground of the site and in the building materials (Nero,).Outdoor air also contributes to the radon concentration indoors, via the ventilation :// /indoor-air-pollutants-and-the-impact-on-human-health.

When radon is in secular equilibrium with its progeny (i.e., when each of the short-lived radon progeny is present at the same activity concentration in air as Rn), each pCi of radon in air will give rise to (almost precisely) WL.

By definition, 1 WL is equal to pCi of radon :// Early environmental measurements of radon were largely confined to outdoor air. The first set of indoor measurements was published by Bengt Hultqvist in ByRolf Sievert and Hultqvist had found rather high radiation levels in dwellings.

It was also suggested that the waste from a uranium mine in Ranstad, Sweden, would be used as   Indoor tanning use among adolescents in the US, to Cokkinides V, Weinstock M, Lazovich D, Ward E, Thun M.

RESULTS: The prevalence of indoor tanning use by adolescents within the past year changed little from to (10% to 11%)   Free to Read Articles from May Part 2.

ARRIVAL OF BUYERS; 13 MORE LOST ON CYCLOPS.; Transferred from Other Ships to Collier as Passengers. Navy Nine Is :// Swedish Limitation Schemes to Decrease Rn Daughters in Indoor Air. The variation in indoor air radon levels in the region under study is mainly due to the variation of the radon levels in the   The dose to internal organs is governed initially by inhalation and lung deposition of radon daughters.

Therefore increased local concentration in room air could lead to increased dose by inhalation. E-fields are heavily attenuated by the human body and body values in tissue of no more than 10(-4) of the external field strength have been :// Indoor air particles and dusts are discussed with emphasis on characterization, indoor air cleaners, and asbestos in residences.

Radon in the indoor environment is discussed as an emerging problem. Finally, an indoor air/radon model is discussed linking indoor air dusts to lung ://?Dockey= A quintessential example is found in the literature on radon and lung cancer, where rates of lung cancer in U.S.

counties showed a negative association with average concentrations of radon measured in the counties (Cohen and Colditz ), whereas the individual case-control and cohort studies show positive exposure-response patterns (NRC ).

In indoor air, the P and the P were μg m −3 and μg m −3, respectively. In Germany, environmental surveys of indoor air have been performed by passive sampling since In the first survey, in /86, with data, a P and a P   Radon is a natural radioactive gas used to estimate the radioactive hazard in the environment.

Radon (Rn), which is one of the daughters of uranium (U), represents the most essential isotope, with a half-life of days. The associated health risks due to inhalation and ingestion of radon and its progeny when present in enhanced levels in an indoor environment like a Phone: () E-mail: @ For general information on radon in indoor air, contact the Radon Hotline at SOS-RADON ().

SUPPLEMENTARY INFORMATION: Potentially Regulated Entities Potentially regulated entities include community water systems using ground water or mixed ground and surface ://?Dockey= Examination of the long-path open-air FTIR technique for air monitoring in the state of Kentucky Dilip K.

Chakraborty Proc. SPIEOptical Sensing for Environmental and Process Monitoring, pg (31 May ); doi: / The principal source of radon to which humans may be exposed to indoor air is Ra (radium), a member of the Ur series, present in rocks and soils subjacent to a building and to a lesser extent in building materials.

The dynamics of radon production in rocks and soil and its subsequent entry into a building is quite ://   Indoor air quality problems are generally classified as Sick Building Syndrome (SBS) or Building-related Illness (BRI).

However, a very important constituent of poor indoor air quality is ETS because of the serious health effects that result from exposure. The following discussion will first identify the health effects associated with SBS and ://    Kriging.

Kriging is essentially a method of weighted moving averages of the observed values of a property in a given neighbourhood, a regionalized variable, Z, with measured values z(xI) at points (xi), i =1,2,n, the equation for ordinary kriging is (11) where z(B) is the value estimated for a block B, and l are the weights assigned to the sampling points in the search   with stable lead (Pb).

The intermediates between radon and stable lead are termed radon daughters or radon progeny (see Chapter 4, Figures, and for radioactive decay schemes of U, Th, and U, respectively). The isotope Rn is a direct decay product of radium ( Ra), which is part of the   The term indoor air pollution overlaps with much research on indoor pollution from other sources (for example, from household furnishings and consumer products).

For example, the CRA now separately includes risks from indoor exposure to :// 2 days ago  As a quasi-judicial tribunal, the Agency has the authority to issue adjudicative decisions and orders on matters within its jurisdiction over federal rail, air and marine modes of transportation and, in respect of the Agency’s accessibility mandate, extra-provincial bus ://   Increasing air tightness has developed a need for dedicated mechanical ventilation systems for preventing indoor air quality problems in conventional houses “ (Gusdorf & Parekh, ).

“The houses are super insulated, ultra tight, have controlled ventilation with heat recovery, do not implement lots of glass, good lighting and anything that   Web view. Air EPA recommends actions that can be taken to reduce radon levels if measured indoor levels of radon are 4 or more pCi per liter (pCi/L) of air.

This is the same as Becquerels per cubic meter [Bq/m3] of air in the international ://%-memorandum-of-understanding. Indoor air pollution can be particularly hazardous to health because it is released in close proximity to people. The most prominent source of indoor air pollution in developing countries is household use of biomass and coal for heating and cooking, usually involving open fires or stoves without proper ://   This limits the concentration in air.

(I happen to live in an area with high background radon levels, and this is a result of uranium.) Nevertheless it is certainly true, the mysticism of the anti-nuke community not withstanding that all life has continuously been bathed in radiation, particularly when one considers the existence of potassium An illustration of an open book.

Books. An illustration of two cells of a film strip. Video. An illustration of an audio speaker. Audio. An illustration of a " floppy disk.

Software. An illustration of two photographs. Images. An illustration of a heart shape Donate. An illustration of text ellipses. Chapter 5: Indoor Air Quality. Summary: This chapter considers indoor air quality and the many factors that can improve or decrease air quality in buildings.

Tighter buildings, the introduction of more and more chemicals in materials and furnishings, and the fact that people spend more and more time indoors have served to bring public attention and Electrical/MEEB/  Web view.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation   appliances and indoor and outdoor lighting fixtures and other electrical or mechanical appliances, (including all heating, ventilation, hot water and air-conditioning systems which may be located inside or outside of, but adjacent to the unit) of any unit owner shall be   This is Part III of the “Sustaining the Wind” series of essays by NNadir.

For Part I, click here. Part II is here. In part 2 of this series[2], we discussed the claim of Udo Bardi, an academic “peak oiler” out of the University of Florence, that uranium supplies   The Project Gutenberg EBook of Everybody's Book of Luck, by Anonymous This eBook is for the use of anyone anywhere in the United States and most other parts of the world at no cost and with almost no restrictions whatsoever.

There is the roving disposition implanted in these boys and many of them think that the pilot's job on an air liner   On the basis of lifetime cancer risks, lead (Pb) and polonium (Po) ≥ and pCi/L (picocuries per liter), respectively, in drinking-water supplies may pose human-health concerns.

Pb and Po were detected at concentrations greater than these thresholds at and %, respectively, of filtered untreated groundwater samples from public-supply wells in 19 principal   Radon is the one internal emitter for which control of exposure is based on direct information on cancer risks, with extensive information available on lung cancer induction by radon progeny in mines, and consistent data on risks in homes (ICRP a,NAS/NRCEPA, Tomasek et al a, b, Darby et al This text-based PDF or EBook was created from the HTML version of this book and is part of the Portable Library of Liberty.

HTML: KB: This version has been converted from the original text. Every effort has been taken to translate the unique features of the printed book into. The half-lives of the parent, U, and its daughters are shown in the inset of figure 3.

Note that the half-lives of many of the daughters are very long, ~2 × 10 2 – × 10 5 years. Secular equilibrium is established when the emission rate of the daughters is the same as that of the parent and was first described by ://