Radon in outdoor air in Nevada.

abstract：:Röntgen's description of his discovery of x rays was convincing and comprehensive. The response of the scientific community and public was immediate and intense. In contrast, the discovery of radioactivity was a muddled affair that excited little interest. While it would prove far more revolutionary than that of x ray...

journal_title：Health physics

authors： Frame PW

更新日期：1996-05-01 00:00:00

abstract：:Coyote fecal samples were collected near a radioactive waste leaching pond and a solid radioactive waste disposal facility and analyzed for radioactivity. Elevated concentrations of 137Cs, 90Sr and 238Pu in the samples from the liquid radioactive waste leaching area were attributed to coyotes ingesting contaminated po...

journal_title：Health physics

authors： Arthur WJ 3rd,Markham OD

更新日期：1982-10-01 00:00:00

abstract：:CR-39 plastic was attached to household glass objects to learn whether residual radioactivity from radon decay products could be measured and correlated with cumulative radon exposures over defined time periods. Such an approach could be used to increase the completeness of exposure data collected in epidemiologic stu...

journal_title：Health physics

authors： Mahaffey JA,Parkhurst MA,James AC,Cross FT,Alavanja MC,Boice JD,Ezrine S,Henderson P,Brownson RC

更新日期：1993-04-01 00:00:00

abstract：:Databases are being created that contain verified and updated dosimetry and worker history information for workers at the Mayak Production Association. Many workers had significant external and internal exposures, particularly during the early years (1948-1952) of operation. These dosimetric and worker history data ar...

journal_title：Health physics

authors： Khokhryakov V,Suslova K,Aladova E,Vasilenko E,Miller SC,Slaughter DM,Krahenbuhl MP

更新日期：2000-07-01 00:00:00

abstract：:Two motivations for studying radiation risk are (1) to quantify the magnitude of risk as an aid to setting radiation protection standards and (2) to understand causality as an aid to assigning compensation for radiation exposed individuals whose disease or death may have been related to radiation exposure. Although it...

journal_title：Health physics

authors： Cologne J,Cullings H,Furukawa K,Ross P

更新日期：2010-11-01 00:00:00

abstract：:Measurements have been made of surface deposition rates for 218Po radon decay products in a small (0.283m3) aluminum test chamber for 222Rn levels from 1 to 1,600 kBq m-3. an increase in macroscopic surface deposition rate has been found to be induced by the high 222Rn concentrations. A distinct 222Rn level threshold ...

journal_title：Health physics

authors： Leonard BE

更新日期：1996-03-01 00:00:00

abstract：:The "radon emanation" method of analysis for Rn and Ra in natural waters has been used by scientists for more than 30 years. We have examined the use of a new plastic bottle design as a viable option and improvement to traditional glass designs. The advantages of the new design over that used previously in our laborat...

journal_title：Health physics

authors： Stringer CE,Burnett WC

更新日期：2004-12-01 00:00:00

abstract：:The use of x-ray generators for diagnostic radiology in the medical sector in Cameroon, Central Africa, is wide spread and on the increase in recent times. Regulatory control of x-ray machines used in medical sector has been achieved in the Littoral Region of Cameroon by means of notification and authorization systems...

journal_title：Health physics

authors： Beyala Ateba JF,Simo A,Moyo Ndontchueng M,Sabouang JF

更新日期：2017-11-01 00:00:00

abstract：:Eleven years after the accidental loss of nuclear weapons in 1968, the fourth scientific expedition to Thule occurred. The estimated inventory of 1 TBq 239,240Pu in the marine sediments was unchanged when compared with the estimate based on the 1974 data. Plutonium from the accident had moved further away from the imp...

journal_title：Health physics

authors： Aarkrog A,Dahlgaard H,Nilsson K,Holm E

更新日期：1984-01-01 00:00:00

abstract：:Thyroids from mule deer (Odocoileus hemionus) were collected in New Mexico, Colorado, Wyoming and Idaho and 129I/127I atom ratios were determined. Iodine-129/127 atom ratios were significantly (P less than 0.005) different among states. Ratios in Wyoming and Idaho control thyroids were significantly (P less than 0.05)...

journal_title：Health physics

authors： Markham OD,Hakonson TE,Whicker FW,Morton JS

更新日期：1983-07-01 00:00:00

abstract：:Continuously repeated or frequent periodic measurements of the radiation environment in the absence of an identified source of ionizing radiation provide large data sets on the ambient background. Statistical evaluation of these data allows for the identification and quantification of the relevant background distribut...

journal_title：Health physics

authors： Brandl A

更新日期：2013-03-01 00:00:00

abstract：:Global concerns over energy supply and climate change have given rise to an increase in uranium prospecting, mining and extraction. The changing world economy is spreading the use of advanced nuclear and radiation-related technologies to many parts of the world, giving rise to global initiatives on nuclear energy and ...

journal_title：Health physics

authors： Kase KR,Metcalf P

更新日期：2011-01-01 00:00:00

abstract：:Cosmic rays make a significant, but not normally a dominant, contribution to the radiation dose of people all over the world. However, doses rise with altitude and the earth's magnetic field means that latitude also becomes important. Solar activity imposes a further, time dependent, variation. This article gives more...

journal_title：Health physics

authors： Kendall GM

更新日期：2000-11-01 00:00:00

abstract：:DOE facilities are required to conduct environmental surveillance to verify that facility operations are operated within the approved risk envelope and have not caused undue risk to the public and the environment. Given a reduced budget, a strategy for analyzing environmental surveillance data was developed to set pri...

journal_title：Health physics

authors： Shyr LJ,Herrera H,Haaker R

更新日期：1997-11-01 00:00:00

abstract：:The radionuclide contents of conventional natural raw building materials, coal ash and slag, and finished building products have been determined using gamma-ray spectrometry. Results of brick measurements in their original geometry and in crushed form are compared. The radioactive concentrations in cement and sand, mo...

journal_title：Health physics

authors： Man CK,Lau SY,Au SC,Ng WK

更新日期：1989-09-01 00:00:00

abstract：:The scientific basis for the physical and biological effectiveness of particle radiations has emerged from many decades of meticulous basic research. A diverse array of biologically relevant consequences at the molecular, cellular, tissue, and organism level have been reported, but what are the key processes and mecha...

journal_title：Health physics

authors： Blakely EA

更新日期：2012-11-01 00:00:00

abstract：:Depleted uranium (DU) munitions were initially used by the United States (U.S.) military during the first Persian Gulf War in 1991 in order to penetrate heavily armored vehicles. However, as a result of friendly fire, several U.S. military personnel received intakes from DU munitions. One of the ongoing concerns for t...

journal_title：Health physics

authors： Walkingstick MT,Krage ES,Brey RR

更新日期：2018-03-01 00:00:00

abstract：:The concentrations of various trace elements and radionuclides have been measured in marine protein concentrates prepared from surface feeding fishes. As with concentrates prepared from benthic fishes, the 210Pb-210Po pair are the most significant radionuclides present. Concentrations of stable Pb, Co and Ag in certai...

journal_title：Health physics

authors： Beasley TM,Jokela TA,Eagle RJ

更新日期：1971-12-01 00:00:00

abstract：:This paper summarizes an environmental radionuclide baseline study undertaken for the Department of National Defence in Canada. The purpose of the project was to establish levels of radionuclides present in the environment around areas where nuclear propelled vessels may be berthed. Specifically, this report describes...

journal_title：Health physics

authors： Waller EJ,Cole D

更新日期：1999-07-01 00:00:00

abstract：:A group of 219 subjects of Slovak adults from both sexes were studied for potassium body content by measuring the whole body activity of naturally occurring 40K using a whole body counter. The average body potassium value is 1.68 +/- 0.33 g kg(-1) body weight for males and 1.60 +/- 0.30 g kg(-1) for females. For both ...

journal_title：Health physics

authors： Lahham A,Fülöp M,Vladár M,Ragan P

更新日期：1998-03-01 00:00:00

abstract：:High-order decay equations are often difficult to study without significant care taken with variables and assumptions. As parent and progeny activities evolve over time, the effects of uncertainties and approximations confound the quality and interpretation of results. Of particular concern is the situation when decay...

journal_title：Health physics

authors： Wilson CA 4th,Hendrickson KR,Hamideh AM,Matthews KL 2nd,Wang WH

更新日期：2018-12-01 00:00:00

abstract：:A radioactive particulate release experiment to produce a near-field ground deposition representative of small-scale venting from an underground nuclear test was conducted to gather data in support of treaty capability development activities. For this experiment, a CO2-driven "air cannon" was used to inject (140)La, a...

journal_title：Health physics

authors： Keillor ME,Arrigo LM,Baciak JE,Chipman V,Detwiler RS,Emer DF,Kernan WJ,Kirkham RR,MacDougall MR,Milbrath BD,Rishel JP,Seifert A,Seifert CE,Smart JE

更新日期：2016-05-01 00:00:00

abstract：:To determine the volume reduction potential for incineration of radioactivity in low-level radioactive waste, an incineration experiment was performed at the Okayama University Radioisotope Center (OURIC). Solid low-level radioactive samples (LLRS) were prepared for 15 routinely used radionuclides (45Ca, 1251, 32p, 33...

journal_title：Health physics

authors： Yumoto Y,Hanafusa T,Nagamatsu T,Okada S

更新日期：2000-08-01 00:00:00

abstract：:For the purpose of improving retrospective internal thyroid dose estimations for children and adolescents following the Chernobyl accident, age- and gender-dependent thyroid masses have been estimated for the children of Kiev and Zhytomyr oblasts, which are two of the most contaminated regions of Northern Ukraine. For...

journal_title：Health physics

authors： Likhtarov I,Kovgan L,Masiuk S,Chepurny M,Ivanova O,Gerasymenko V,Boyko Z,Voillequé P,Antipkin Y,Lutsenko S,Oleynik V,Kravchenko V,Tronko M

更新日期：2013-01-01 00:00:00

abstract：:Radioactive seed localization procedures, using I seeds of typical activity 3.7 MBq and higher, are performed to localize nonpalpable lesions in the breast for surgical excision and pathology analysis. This study evaluated the use and dosimetry of I seeds of activity <3.7 MBq in radioactive seed localization procedure...

journal_title：Health physics

authors： Brost E,Prather A,Naik H,Jafari ME

更新日期：2020-04-01 00:00:00

abstract：:Requirements for additional security measures for sealed radioactive sources have evolved since they were first implemented after the terrorist events of 11 September 2001. This paper will describe the sequence of those measures, commencing with the early orders issued by the U.S. Nuclear Regulatory Commission to the ...

journal_title：Health physics

authors： Klinger JG

更新日期：2016-02-01 00:00:00

abstract：:Exposure to spark discharges may occur beneath high voltage transmission lines when contact is initiated with a conductive object (such as a motor vehicle) with the spark discharge mediated by the ambient electric field from the line. The objective of this study was to assess whether such exposures could interfere wit...

journal_title：Health physics

authors： Korpinen L,Kuisti H,Tarao H,Virtanen V,Pääkkönen R,Dovan T,Kavet R

更新日期：2016-01-01 00:00:00

abstract：:Rare earth intensifying screen material (Gd2O2S:Tb) was added to the standard Al filtration of an oral panoramic x-ray unit, resulting in a beam capable of achieving reductions in patient dose without a loss of image quality. The added rare earth filtration technique resulted in patient dose reductions of 21-56%, depe...

journal_title：Health physics

authors： Tyndall DA,Washburn DB

更新日期：1987-01-01 00:00:00

abstract：:Unlike detached or semi-detached houses, the main source of indoor radon in high-rise buildings is the building material. Radon released from the building material will be removed by ventilation, either forced or natural, so that its concentration, its progeny's concentration, and the equilibrium between the two will ...

journal_title：Health physics

authors： Leung JK,Tso MY,Ho CW

更新日期：1998-09-01 00:00:00

abstract：:This work describes the design, development, and characterization of an ionization chamber to detect and locate gamma ray sources with intensities down to 100 mu Gy h(-1). The results show that sources of x ray and gamma radiation in the energy range of 14 to 1,250 keV can be located. The directional sensitivity of th...

journal_title：Health physics

authors： Kronenberg S,Bruckner GJ,Bechtel E,Gentner F

更新日期：1996-04-01 00:00:00