Residence times of global weapons testing fallout 237Np in a grassland soil compared to 239 + 240Pu, 241Am, and 137Cs.

abstract：:A simple approximation for estimating the centerline gamma absorbed dose rates due to a continuous Gaussian plume was developed. To simplify the integration of the dose integral, this approach makes use of the Gaussian cloud concentration distribution. The solution is expressed in terms of the I1 and I2 integrals whic...

journal_title：Health physics

authors： Overcamp TJ,Fjeld RA

更新日期：1987-08-01 00:00:00

abstract：:Radiofrequency-induced hyperthermia has recently gained acceptance in cancer therapy. One of a few commercially available systems is the Magnetrode, a device operating at 13.56 MHz with an output power up to 1000 W. Heating of the prescribed part of the patient's body is accomplished by one of the coil electrodes. To ...

journal_title：Health physics

authors： Stuchly MA,Repacholi MH,Lecuyer DW

更新日期：1983-07-01 00:00:00

abstract：:In Western Canada, there are many plants that process natural gas to remove impurities (CO2, H2S, H2O) and recover natural gas liquids (propane, butane, etc.). Trace quantities of 222Rn present in the inlet stream are concentrated in streams rich with propane. Potential hazards to plant operators include direct inhala...

journal_title：Health physics

authors： Drummond I,Boucher P,Bradford B,Evans H,McLean J,Reczek E,Thunem H

更新日期：1990-07-01 00:00:00

abstract：:The dosimetry for exposure to gamma radiation in the environment is reviewed, including the factors used to convert measurements of traceable quantities to effective dose equivalent. A value of 0.70 Sv Gy-1 is widely used to convert air kerma or absorbed dose-to-air to effective dose equivalent, but recent work shows ...

journal_title：Health physics

authors： Clark MJ,Burgess PH,McClure DR

更新日期：1993-05-01 00:00:00

abstract：:The possibility of the occurrence of radiation accidents is increasing in the Asian region. However, training/education programs for medical professionals have not been established to improve the medical preparedness for radiation emergencies in the Asian region. As one of the activities for radiation emergency medica...

journal_title：Health physics

authors： Park KD,Jang M,Akashi M

更新日期：2010-06-01 00:00:00

abstract：:Measurements of the gross beta activity of snow samples from four Alpine glaciers contaminated by radioactive fallout from the Chernobyl nuclear accident and a gamma-spectrum analysis of selected samples are reported. The results are discussed with respect to possible risks to the population from using meltwater from ...

journal_title：Health physics

authors： Ambach W,Rehwald W,Blumthaler M,Eisner H,Brunner P

更新日期：1989-01-01 00:00:00

abstract：:Medical workers constitute the largest group of individuals occupationally exposed to radiation, and their collective dose equivalent is exceeded only by persons employed in the nuclear fuel cycle. Although medical workers have increased in number by about 50% over the past two decades, their collective dose has stead...

journal_title：Health physics

authors： Hendee WR,Edwards FM

更新日期：1990-03-01 00:00:00

abstract：:Experimental measurements of velocity and tracer gas concentration are taken in a straight tube to evaluate the effectiveness of mixing in achieving conditions as required by ANSI N13.1-1999 for single point extractive sampling from stacks and ducts of nuclear facilities. Mixing is evaluated for inlet turbulent intens...

journal_title：Health physics

authors： Anand M,McFarland AR,Rajagopal KR

更新日期：2003-01-01 00:00:00

abstract：:Reported here are results of a 1982 national survey in France to establish the collective effective dose equivalent associated with the main types of radiological examinations practiced annually in this country (except nuclear medicine, C.T. scans, dental radiology and mass chest screening). This report describes the ...

journal_title：Health physics

authors： Maccia C,Benedittini M,Lefaure C,Fagnani F

更新日期：1988-04-01 00:00:00

abstract：:For decades, radiation protection philosophy and practice have been the domain of professionals trained in the physical and medical sciences. Radiation protection policy was formulated and implemented largely without consultation with or participation by other professional disciplines or the general public. Although, ...

journal_title：Health physics

authors： Florig HK

更新日期：2001-04-01 00:00:00

abstract：:The shaft portion of the left femur from an individual occupationally exposed to Pu was used to investigate the suitability of an ethylenediamine extraction technique to separate mineral bone from organic material. Marrow in the lumen was removed before the extraction technique was used and was analyzed separately for...

journal_title：Health physics

authors： Miglio JJ,Willis LC

更新日期：1987-06-01 00:00:00

abstract：:The contributions of tritiated water (3HHO) and dietary tritiated amino acids to the steady-state specific activities of tissue water tritium and organically bound tritium in mice were essentially independent and additive. Following exposure (56 d), organically bound tritium clearance was resolved into two distinct co...

journal_title：Health physics

authors： Rodgers DW

更新日期：1992-09-01 00:00:00

abstract：:Clinical efficacy and safety may be compromised if output from ultrasonic therapy transducers differs significantly from the indicated value. Space-averaged effective intensities selected for treatment are a ratio of the emitted ultrasonic power to the effective radiating area (ERA). In this study, ERA measurements fo...

journal_title：Health physics

authors： Bly SH,Hussey RG,Kingsley JP,Dickson AW

更新日期：1989-10-01 00:00:00

abstract：:Monte Carlo neutron transport calculations were performed to obtain the neutron response functions of a superheated drop detector (SDD-100) that is surrounded by polyethylene of various thicknesses. The calculational results suggest that a SDD-100 surrounded by 2.54 cm of polyethylene gives the best dose-equivalent re...

journal_title：Health physics

authors： Wang CK

更新日期：1992-03-01 00:00:00

abstract：:RESRAD-RECYCLE is a computer code designed by Argonne National Laboratory (ANL) to be used in making decisions about the disposition of radioactively contaminated materials and scrap metals. It implements a pathway analysis methodology to evaluate potential radiation exposures resulting from the recycling of contamina...

journal_title：Health physics

authors： Cheng JJ,Kassas B,Yu C,Amish J,LePoire D,Chen SY,Williams WA,Wallo A,Peterson H

更新日期：2004-11-01 00:00:00

abstract：:Smoke from a wildfire in northern New Mexico that moved along the border of the Los Alamos National Laboratory (LANL) was monitored for ²³⁹Pu in the event that the fire might cross into LANL property containing locations with low, but greater than background, levels of ²³⁹Pu and other alpha-emitting radionuclides. Thr...

journal_title：Health physics

authors： Whicker JJ,Baltz D,Eisele WF,Hart OF,McNaughton MW,Green AA

更新日期：2012-08-01 00:00:00

abstract：:A rugged resin concentration method followed by gamma counting was developed for measuring 226Ra and 228Ra in drinking water. Using typical distribution system pressure, 310 kPa (45 psig), radium in a 20-L sample was concentrated 100-fold onto 200 mL of ion-exchange resin beads that were then sealed in a glass jar for...

journal_title：Health physics

authors： Clifford DA,Higgins EA

更新日期：1992-05-01 00:00:00

abstract：:To determine the present level of plutonium in human tissues of people in the F.R.G., due solely to fallout from weapons testing, 30 sets of tissues and bones from Munich residents were obtained at autopsy. Each set of tissues consisted of the entire lung, the entire liver, 300 g vertebrae, 300 g ribs and the lymph no...

journal_title：Health physics

authors： Bunzl K,Kracke W

更新日期：1983-01-01 00:00:00

abstract：:The objectives of this research were (1) to analyze the transfers of 137Cs and 60Co in a retention pond, with emphasis on aquatic insects and (2) to determine if detectable concentrations of these radionuclides are exported by emerging aquatic insects. We analyzed the radionuclide concentrations in the following compo...

journal_title：Health physics

authors： Voshell JR Jr,Eldridge JS,Oakes TW

更新日期：1985-11-01 00:00:00

abstract：:The Cameco lung counter has been recalibrated using the Lawrence Livermore National Laboratory torso phantom using an extended lung set (i.e., longer than the original set). The previous calibration had used the Japanese Atomic Energy Research Institute torso phantom. The new calibration had lower counting efficiencie...

journal_title：Health physics

authors： Kramer GH,Hauck B,Allen SA

更新日期：2009-06-01 00:00:00

abstract：:This document was prepared as a review of the current knowledge of tritium metabolism and dosimetry. The physical, chemical, and metabolic characteristics of various forms of tritium are presented as they pertain to performing dose assessments for occupational workers and for the general public. For occupational worke...

journal_title：Health physics

authors： Hill RL,Johnson JR

更新日期：1993-12-01 00:00:00

abstract：:Radon exposure is associated with an increased incidence of lung cancer, and elevated levels may be found in as many as 1 out of 15 homes. The U.S. EPA recommends testing homes for radon and mitigating over the advisory level of 4 picocuries per liter (4 pCi L(-1), or 148 Bq m(-3)). A sample population from a list of ...

journal_title：Health physics

authors： Riesenfeld EP,Marcy TW,Reinier K,Mongeon JA,Trumbo CW,Wemple BE,Kaminsky DA

更新日期：2007-05-01 00:00:00

abstract：:The radioactivity of coals and ashes from Spanish coal power plants (CPP) was evaluated. This radioactivity is due mainly to 40K and the U and Th series. The samples were measured in secular equilibrium using a NaI(T1) detector. The annual average airborne releases were also evaluated. An atmospheric dispersion model ...

journal_title：Health physics

authors： Alvarez MC,Garzon L

更新日期：1989-11-01 00:00:00

abstract：:An attempt was made to test the hypothesis (McLeod et al. 1987; Smith et al. 1987) that a certain combination of direct current and alternating current magnetic field exposures at room temperature results in an increase in motility of a marine diatom (Amphora coffeaeformis) to a maximum value. Diatom motility increase...

journal_title：Health physics

authors： Prasad AV,Miller MW,Cox C,Carstensen EL,Hoops H,Brayman AA

更新日期：1994-03-01 00:00:00

abstract：:A critical review of the literature on the biokinetics of inhaled mercury vapor was performed as part of an accident analysis for the Spallation Neutron Source to be built at Oak Ridge National Laboratory. It was concluded that current models for inhaled mercury vapor do not accurately describe the distribution or res...

journal_title：Health physics

authors： Leggett RW,Munro NB,Eckerman KF

更新日期：2001-10-01 00:00:00

abstract：:As part of the UK Ministry of Agriculture Fisheries and Food Directorate of Fisheries Research (MAFF/DFR) post-Chernobyl monitoring program, a detailed study was carried out of the change over time in dissolved-phase 137Cs concentrations in a number of lakes in Cumbria, UK. These measurements have been combined with p...

journal_title：Health physics

authors： Smith JT,Leonard DR,Hilton J,Appleby PG

更新日期：1997-06-01 00:00:00

abstract：:To estimate of the dispersion trend of 3H and 14C discharged from the Wolsung Nuclear Power Plants, the present level of 3H and 14C in environmental samples in the vicinity of the Wolsong site was studied. Tree-ring cellulose analyses were carried out for retrospective evaluation of 3H and 14C in the environment aroun...

journal_title：Health physics

authors： Kim CK,Lee SK,Rho BH,Lee YG

更新日期：2000-06-01 00:00:00

abstract：:This paper broadly examines the historical development of radiation protection in medical practice through an examination of the interactions of those concerned with radiation protection and medical practice with emphasis on the last half century and on the role played by health physicists and the Health Physics Socie...

journal_title：Health physics

authors： Stannard JN,Kathren RL

更新日期：1995-11-01 00:00:00

abstract：:Transportable (e.g., "giraffe") air samplers can be used for both short-term "grab-sampling" situations involving a few minutes to several hours, as well as for long-term retrospective air sampling situations that typically last a week. It is the short-term coverage situation which begs the question: "how long a sampl...

journal_title：Health physics

authors： Justus AL

更新日期：2011-08-01 00:00:00

abstract：:By testing industry standard techniques for radon progeny evaluation on air sample filters, a new technique is developed to evaluate transuranic activity on air filters by curve fitting the decay curves. The industry method modified here is simply the use of filter activity measurements at different times to estimate ...

journal_title：Health physics

authors： Hayes RB,Chiou HC

更新日期：2004-01-01 00:00:00