Radiation dosimetry of a graphite moderated radium-beryllium source.

abstract：:Cohort-based dose-response analyses can be biased if based on a comparison group that is not comparable to the exposed persons with respect to uncontrolled factors related to disease incidence or mortality. When data exist over a range of doses including the very low dose region, internal regression standardized analy...

journal_title：Health physics

authors： Cologne JB,Preston DL

更新日期：2001-05-01 00:00:00

abstract：:A comparison of the risk coefficients for 239Pu- or 226Ra-induced bone cancer in two canine breeds, one with a relatively low (beagle) and the other with a very high (St. Bernard) natural incidence, indicated only slightly higher risk in the giant breed. The differences in risk for skeletal malignancy in 239Pu and 226...

journal_title：Health physics

authors： Taylor GN,Lloyd RD,Mays CW,Miller SC,Jee WS,Mori S,Shabestari L,Li XJ

更新日期：1997-10-01 00:00:00

abstract：:The Mayak Production Association (MPA) worker registry has shown evidence of plutonium-induced health effects. Workers were potentially exposed to plutonium nitrate [(239)Pu(NO(3))(4)] and plutonium dioxide ((239)PuO(2)). Studies of plutonium-induced health effects in animal models can complement human studies by prov...

journal_title：Health physics

authors： Wilson DA,Mohr LC,Frey GD,Lackland D,Hoel DG

更新日期：2010-01-01 00:00:00

abstract：:Assumptions supporting a chronic aqueous release methodology are inappropriate for estimating dose from accidental discharges. A method of modeling acute or accidental releases is being developed for predicting maximum individual dose. Standardization of consumption rates and usage factors for acute aqueous releases i...

journal_title：Health physics

authors： Hamby DM

更新日期：1992-06-01 00:00:00

abstract：:The U.S. National Oceanic and Atmospheric Administration's Field Research Division uses the HYRad-HYSPLIT dispersion model to assess hypothetical accidental releases of airborne radioactive materials at the Idaho National Laboratory in southeastern Idaho. The State of Idaho Department of Environmental Quality Idaho Na...

journal_title：Health physics

authors： Abbott ML

更新日期：2018-10-01 00:00:00

abstract：:Conversion factors for the dose rate 1 m above the ground level from the measured activities for different gamma-ray emitters in soil are calculated using the Monte Carlo method. The calculations are based on the GEANT system developed at CERN, Geneva. Results for the uniform and surface distribution of the emitters i...

journal_title：Health physics

authors： Likar A,Vidmar T,Pucelj B

更新日期：1998-08-01 00:00:00

abstract：:An evaluation of available personnel monitoring data and radium body burden records of dial painters handling an annual average of 1.5 Ci of radium indicates that they received an average of about 2 rem/person whole body exposure, 3 rem to the lungs from radon inhalation and 0.2 rad to the bone from radium body burden...

journal_title：Health physics

authors： Simpson RE,Shuman FG,Moghissi AA,Blackburn JA,Bailey ED

更新日期：1983-05-01 00:00:00

abstract：:Thorium lung burdens have been measured in workers in the dry separation plants operated by the mineral sands industry in Western Australia. The data have been compared with historical employment records of the worker's exposure to thorium-bearing airborne dusts in order to assess the reliability of personal air sampl...

journal_title：Health physics

authors： Terry KW,Hewson GS

更新日期：1995-08-01 00:00:00

abstract：:Accurate extrapolation of animal toxicity data for human health risk assessment requires determination of the effective dose to the target tissue and the sensitivity of the target tissue to that dose. The methodology for deriving reference doses [the U.S. Environmental Protection Agency's (EPA) benchmark values for ga...

journal_title：Health physics

authors： Jarabek AM,Menache MG,Overton JH Jr,Dourson ML,Miller FJ

更新日期：1989-01-01 00:00:00

abstract：:Experience gained from involvement in a number of emergency response activities since September 2001 in Texas indicated that the likely roles of statewide medical reserve corps units typically included aspects such as crowd control, registration and tracking, and information management. The need for training specifica...

journal_title：Health physics

authors： Emery RJ,Sprau DD,Morecook RC,Herbold J

更新日期：2009-11-01 00:00:00

abstract：:Uranium concentration in drinking water samples collected from some areas of Punjab and Himachal Pradesh has been measured using a laser induced fluorimetry technique. The sources of water comprise hand pumps and tube wells. Uranium concentration in the water samples from Punjab varies from 1.39 +/- 0.16 to 98.25 +/- ...

journal_title：Health physics

authors： Rani A,Singh S

更新日期：2006-08-01 00:00:00

abstract：:Depleted uranium (DU) is an alpha particle emitter and radioactive heavy metal used in military applications. Due to internalization of DU during military operations and the ensuing chronic internal exposure to DU, there are concerns regarding its potential health effects. Preconceptional paternal irradiation has been...

journal_title：Health physics

authors： Miller AC,Stewart M,Rivas R

更新日期：2010-09-01 00:00:00

abstract：:The escaping radioactivity from Greek coal power plants (CPP) was studied. For the case studied the radioactivity is due to the uranium series. The major part (99%) escapes as very fine particles, while the rest is fly ash. The total escaping 226Ra activity is of the order of 40 Ci/yr. The particulate dispersion of fl...

journal_title：Health physics

authors： Papastefanou C,Charalambous S

更新日期：1984-02-01 00:00:00

abstract：:Throughout 53 years of operations, an estimated 29,300 TBq of tritium were released to the atmosphere at the Livermore site of Lawrence Livermore National Laboratory (LLNL); about 75% of this was released as tritium gas primarily in two accidental releases. A tritium dose reconstruction was undertaken to chronicle bot...

journal_title：Health physics

authors： Peterson SR

更新日期：2008-08-01 00:00:00

abstract：:This paper demonstrates the utility of a portable alpha Continuous Air Monitor (CAM) as a bench top scalar counter for multiple sample types. These include using the CAM to count fixed air sample filters and radiological smears. In counting radiological smears, the CAM is used very much like a gas flow proportional co...

journal_title：Health physics

authors： Hayes RB,Peña AM,Goff TE

更新日期：2005-08-01 00:00:00

abstract：:Accidents involving exposure to radiation or radioactive materials may involve an unusual degree of emotional trauma. Methods that may be employed in dealing with such trauma are discussed in relation to a specific accident in which a radiation worker was injured and seriously contaminated with 241Am. ...

journal_title：Health physics

authors： Brown WR

更新日期：1983-10-01 00:00:00

abstract：:The deployment of a radiological dispersal device (RDD) is likely to result in relatively low radiation exposure of the targeted population, insufficient to cause a severe radiation detriment. Nevertheless, due to atmospheric dispersion of the radioactive material, an urban area equaling several city blocks could be a...

journal_title：Health physics

authors： Steinhausler F

更新日期：2005-11-01 00:00:00

abstract：:The air-kerma rate constant gamma delta (and its precursors), as one of the basic radiation characteristics of 192Ir, was determined by many authors. Analysis of accessible data on this quantity led us to the conclusion that published data strongly disagree. That is the reason we calculated this quantity on the basis ...

journal_title：Health physics

authors： Ninković MM,Raiĉevìć JJ

更新日期：1993-01-01 00:00:00

abstract：:A recent publication by in the April 28, 2004, issue of JAMA raises concern since it suggests that exposure to dental x rays during pregnancy could be responsible for human fetal growth retardation. Furthermore, the article could have a negative impact on the dental care of pregnant women who might fear the effect of ...

journal_title：Health physics

authors： Brent RL

更新日期：2005-04-01 00:00:00

abstract：:The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory (LLNL) in California is currently in operation with the goal to demonstrate fusion energy gain for the first time in the laboratory-also referred to as "ignition." Based on these demonstration experiments, the Laser Inertial Fusion Ener...

journal_title：Health physics

authors： Reyes S,Dunne M,Kramer K,Anklam T,Havstad M,Mazuecos AL,Miles R,Martinez-Frias J,Deri B

更新日期：2013-06-01 00:00:00

abstract：:The primary target for uranium toxicity is the kidney. The most frequently used guideline for uranium kidney burdens is the International Commission on Radiological Protection value of 3 microg U g(-1) kidney, a value that is based largely upon chronic studies in animals. In the present effort, a risk model equation w...

journal_title：Health physics

authors： Roszell LE,Hahn FF,Lee RB,Parkhurst MA

更新日期：2009-03-01 00:00:00

abstract：:The frequency of hypoxanthine-guanine phosphoribosyltransferase (hprt) mutations has been determined in the peripheral T-lymphocytes of 18 workers at the Sellafield nuclear reprocessing installation with cumulative recorded radiation doses of about 500 mSv or more in comparison with a matched control group of 18 worke...

journal_title：Health physics

authors： Cole J,Arlett CF,Green MH,Holdsworth D,Tawn EJ,Bridges BA

更新日期：1995-03-01 00:00:00

abstract：:In Region of Interest (ROI) Fluoroscopy, an ROI filter is inserted into the x-ray beam in order to decrease the patient exposure in the peripheral part of the field of view. A filter placement device has been designed and constructed for the practical implementation of ROI fluoroscopy. When unmodified spot films are r...

journal_title：Health physics

authors： Kezerashvili M,Rudin S,Bednarek D

更新日期：1997-01-01 00:00:00

abstract：:Fractal analysis is introduced in the field of environmental health physics. In particular, it is applied to the complex and inhomogeneous deposition pattern of radioactivity after the Chernobyl accident. The patchiness of 137Cs hot spots is quantified by a fractal dimension as low as 1. The problem of finding hot spo...

journal_title：Health physics

authors： Raes F,De Cort M,Graziani G

更新日期：1991-08-01 00:00:00

abstract：:A uranium in vitro bioassay (urinalysis) action level was derived for use at the Department of Energy's Uranium Mill Tailings Remedial Action Project sites to identify chronic inhalation intakes of uranium mill tailings causing 0.5 mSv (50 mrem) annual effective dose equivalent. All radionuclides in the 238U decay cha...

journal_title：Health physics

authors： Reif RH,Turner JB,Carlson DS

更新日期：1992-10-01 00:00:00

abstract：:If a large radioactive cloud is produced, sampling may require that an airplane traverse the cloud. A method to predict the absorbed dose to the aircrew from penetrating the radioactive cloud is needed. Dose rates throughout spherically symmetric Gaussian clouds of various sizes, and the absorbed doses from traversing...

journal_title：Health physics

authors： Thompson JM,Poston JW Sr

更新日期：1999-06-01 00:00:00

abstract：:The application of occupational limits (ELs) in the outdoor laser environment requires an understanding of the radiometric methods required to evaluate field exposures with respect to the ELs. The limiting aperture required to adequately specify the EL must always be kept in mind. Since all exposure limits are defined...

journal_title：Health physics

authors： Sliney DH

更新日期：1989-05-01 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：:To validate a model for radon transport in soil, measurements of diffusive radon transport under well-defined and controlled conditions have been made in a homogeneous column of dry sand with an air-filled volume on top. This volume simulates a crawl space. The measurements concern time-dependent diffusive transport w...

journal_title：Health physics

authors： van der Spoel WH,van der Graaf ER,de Meijer RJ

更新日期：1997-05-01 00:00:00

abstract：:When patients are exposed to ionizing radiation for medical diagnosis or treatment, the procedure being performed should be justified, and the amount of ionizing radiation used should be commensurate with the medical purpose. A legal limit on the amount of ionizing radiation used for medical exposure of a patient does...

journal_title：Health physics

authors： Rosenstein M

更新日期：2019-02-01 00:00:00