Non-invasive measurement of water content in lung phantom by neutrons: latest improvements to the technique.

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：:The first cycle of statewide radionuclide concentration measurements of public drinking water supplies was completed in accord with the Federal and Georgia Safe Drinking Water Acts. The recommended pattern of analysis is initial screening for gross alpha-particle activity, followed by measuring 226Ra if the gross alph...

journal_title：Health physics

authors： Cline W,Adamovitz S,Blackman C,Kahn B

更新日期：1983-01-01 00:00:00

abstract：:Nineteen UF6/UO2F2 inhalation studies were undertaken in purebred, female beagle dogs (N = 16) to examine inter alia, (a) the possible relations of exposure, whole body, lung and renal uranium levels to excretion rates; (b) the threshold U6+ dose and renal concentration for renal injury; (c) the distribution and reten...

journal_title：Health physics

authors： Morrow P,Gelein R,Beiter H,Scott J,Picano J,Yuile C

更新日期：1982-12-01 00:00:00

abstract：:Bioassay and laboratory survey schedules can be generated using a radioisotope inventory program. This paper discusses the use of laboratory activity, past performance and operational factors for laboratory survey frequency determination, and use of laboratory activity for bioassay scheduling. Mayo Clinic has recently...

journal_title：Health physics

authors： Classic KL,Gross GP

更新日期：1990-08-01 00:00:00

abstract：:Some preliminary considerations from the management of post-accident situations connected to large scale and high land contamination are presented. The return to normal, or at least acceptable living conditions, as soon as reasonably achievable, and the prevention of the possible emergence of a post-accident crisis is...

journal_title：Health physics

authors： Lochard J,Prêtre S

更新日期：1995-01-01 00:00:00

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：: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：:Limits for exposure to electromagnetic fields at RF and microwave frequencies have, at times, been subject to criticism and controversy. In many cases the controversy results from a lack of absolute proof that some nominal levels of exposure are safe, from a misunderstanding of how to apply the limits, and from a lack...

journal_title：Health physics

authors： Petersen RC

更新日期：1991-07-01 00:00:00

abstract：:This article reviews studies of progenitor mobilization with gamma-tocotrienol (GT3), a tocol under advanced development as a radiation countermeasure for acute radiation syndrome (ARS). GT3 protects mice against high doses of ionizing radiation and induces high levels of granulocyte colony-stimulating factor (G-CSF)....

journal_title：Health physics

authors： Singh VK,Fatanmi OO,Verma A,Newman VL,Wise SY,Romaine PL,Berg AN

更新日期：2016-08-01 00:00:00

abstract：:Radioactive sources have been inadvertently incorporated into consignments of scrap metal in various locations throughout the world. In 1990, a 3.7 GBq 137 Cs source, due for transfer from a Scottish industrial establishment to one in England, was mistakenly included in a scrap consignment destined for Irish Steel, a ...

journal_title：Health physics

authors： O'Grady JO,Hone C,Turvey FJ

更新日期：1996-04-01 00:00:00

abstract：:The variability in radiosensitivity across the human population is governed in part by genetic factors. The ability to predict therapeutic response, identify individuals at greatest risk for adverse clinical responses after therapeutic radiation doses, or identify individuals at high risk for carcinogenesis from envir...

journal_title：Health physics

authors： Story M,Ding LH,Brock WA,Ang KK,Alsbeih G,Minna J,Park S,Das A

更新日期：2012-11-01 00:00:00

abstract：:Thoron (Rn) exhalation from building materials has become increasingly recognized as a potential source for radiation exposure in dwellings. However, few studies have focused on mitigation strategies to reduce exposure from thoron and its progeny. Therefore, the purpose of this study is to (1) determine the reduction ...

journal_title：Health physics

authors： de With G,de Jong P,Donk JJ

更新日期：2016-11-01 00:00:00

abstract：:Results of systematic long-term measurements of 90Sr and 137Cs in surface seawater, performed at four locations along the Croatian coast of the Adriatic Sea, are summarized. Observed trends in annual mean activity concentrations are discussed. 90Sr and 137Cs fallout activities affect seawater activity, the coefficient...

journal_title：Health physics

authors： Franić Z,Bauman A

更新日期：1993-02-01 00:00:00

abstract：:The former Apollo facility converted enriched uranium hexafluoride into uranium oxide for shipment to nuclear fuel fabrication plants from 1957 to 1983. This paper describes quantification of the source term from the Apollo facility in terms of quantities of uranium released, particle size, and solubility characterist...

journal_title：Health physics

authors： Caffrey EA,Voillequé PG,Rood AS,Grogan HA,Mohler HJ,Meyer KR,Till JE

更新日期：2020-12-11 00:00:00

abstract：:This paper provides information on the effects of distance and attenuation in lead sheet and gypsum board of the 0.511 MeV photon produced by positron annihilation. Exposure rates are projected external to an adult injected with 185 MBq (5 mCi) of 18F in a fluorodeoxyglucose solution and for the same activity in a sma...

journal_title：Health physics

authors： Courtney JC,Mendez P,Hidalgo-Salvatierra O,Bujenovic S

更新日期：2001-08-01 00:00:00

abstract：:Following the tragic events of 11 September 2001, the nation has made significant strides in preparing for disasters and emergencies of all types. Federal funding to state, local, territorial, and tribal public health and healthcare systems has required an all-hazards preparedness approach with special focus on those ...

journal_title：Health physics

authors： Herrmann J

更新日期：2018-02-01 00:00:00

abstract：:Recent work involving the decommissioning of a former ceramic manufacturing facility licensed by the Nuclear Regulatory Commission for activities involving depleted uranium oxide has uncovered the presence of unexpected high levels of natural radioactivity in non-licensed zirconium oxide powders also used in the same ...

journal_title：Health physics

authors： Lischinsky J,Vigliani MA,Allard DJ

更新日期：1991-06-01 00:00:00

abstract：:For future space missions outside of the Earth's magnetic field, the risk of radiation exposure from solar particle events (SPEs) during extra-vehicular activities (EVAs) or in lightly shielded vehicles is a major concern when designing radiation protection including determining sufficient shielding requirements for a...

journal_title：Health physics

authors： Kim MH,Hayat MJ,Feiveson AH,Cucinotta FA

更新日期：2009-07-01 00:00:00

abstract：:Beagle dogs were given subcutaneous implants of plutonium in their forepaws to mimic hand wounds received by workers accidentally contaminated with plutonium. Ten dogs received 9.46 +/- 0.43 mu Ci of plutonium oxide, and eight dogs received 1.25 +/- 0.60 mu Ci of plutonium nitrate. Surviving dogs were sacrificed at 8 ...

journal_title：Health physics

authors： Dagle GE,Bristline RW,Lebel JL,Watters RL

更新日期：1984-07-01 00:00:00

abstract：:Considering that in 1899 neither biotechnology nor the electronic revolution were foreseen, some humility might be advisable when one looks into the crystal ball for the future role of radiation sources. In the past 50 years, nuclear medicine, nuclear weapons, and nuclear power have had a huge impact in the world. In ...

journal_title：Health physics

authors： Blix H

更新日期：2001-04-01 00:00:00

abstract：:Prompt gamma emission data from the International Atomic Energy Agency's Prompt Gamma-ray Neutron Activation Analysis database are analyzed to determine the absorbed dose rates in tissue to be expected when natural elements are exposed in a near-thermal neutron environment. ...

journal_title：Health physics

authors： Schwahn SO

更新日期：2015-10-01 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

abstract：:Accidental exposure to depleted or enriched uranium may occur in a variety of circumstances. There is a need to quantify such exposure, with the possibility that the testing may post-date exposure by months or years. Therefore, it is important to develop a very sensitive test to measure precisely the isotopic composit...

journal_title：Health physics

authors： Parrish RR,Thirlwall MF,Pickford C,Horstwood M,Gerdes A,Anderson J,Coggon D

更新日期：2006-02-01 00:00:00

abstract：:Studies of laboratory animal retinal exposure to green monochromatic laser radiation show an increasing stability of tissue with increasing pulse duration up to 10(-1) s. This mechanism of biological response of the eye to light damage is fundamental to living systems. It does not manifest itself in animals under deep...

journal_title：Health physics

authors： Zheltov G,Glazkov V,Podol'tzef A,Linnik L,Privalov A

更新日期：1989-05-01 00:00:00

abstract：:The Human Monitoring Laboratory has replaced its lung counting system with four large area (85 mm x 30 mm) HPGe detectors, electronics, and software. The system has been calibrated with the same lung set and phantom that was used to calibrate the Human Monitoring Laboratory's previous lung counting system and the Came...

journal_title：Health physics

authors： Kramer GH,Hauck BM

更新日期：2005-10-01 00:00:00

abstract：:Before issuing a new or revised authorization to discharge liquid radioactive waste to a river, past and current practice has been to assess the impact of each discharge on a site-by-site basis. This paper reports an assessment of the combined impact of all the (year 1999) authorized discharges in the upper River Tham...

journal_title：Health physics

authors： Hilton J,Harvey M,Simmonds J

更新日期：2004-07-01 00:00:00

abstract：:In June 2006, the Radiation Studies Branch of the Centers for Disease Control and Prevention held a workshop to explore rapid methods of facilitating radiological triage of large numbers of potentially contaminated individuals following detonation of a radiological dispersal device. Two options were discussed. The fir...

journal_title：Health physics

authors： Bolch WE,Hurtado JL,Lee C,Manger R,Burgett E,Hertel N,Dickerson W

更新日期：2012-03-01 00:00:00

abstract：:The kinetics with which tritiated thymidine is eliminated from birds and the concentration of radioactivity remaining in the carcass after 350-430 h were measured. Birds injected with tritiated thymidine eliminated 98% of the radioactivity injected within 28 h. Ninety-eight percent was identified in the excreta, and l...

journal_title：Health physics

authors： Party E,Barnea A,Linins I,Gershey EL

更新日期：1997-04-01 00:00:00

abstract：:Field surveys were carried out at sixteen pulp and paper mills in the United States--seven kraft process, two sulfite process, and seven recycling process mills--for the presence of naturally occurring radioactive material (NORM) in precipitates and scales. NORM was detected at three of the kraft mills, one sulfite mi...

journal_title：Health physics

authors： Fisher RP,Easty DB

更新日期：2003-04-01 00:00:00

abstract：:The University of Cincinnati has reproduced the original formulation for the Livermore Thoracic Phantom lungs using contemporary materials and has adopted the linear attenuation coefficient as the primary quality assurance parameter for evaluating the performance capabilities of these new lung phantoms. The Livermore ...

journal_title：Health physics

authors： Spitz H,Glover S,Liu N,Smith B,Hickman D,Kruchten D,Anderson L

更新日期：1994-07-01 00:00:00