The equilibrium factor F.

abstract：:Time-dependent chemical compositions for 13N and 15O induced in the air atmosphere of a high energy electron accelerator room have been studied using a computer simulation method. A radiation chemistry model was developed to describe the chemical reactions of 13N and 15O species with the air molecules and their radiol...

journal_title：Health physics

authors： Endo A,Henshaw J,Mignanelli MA

更新日期：1998-04-01 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：: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：:The 3H concentration in Japanese human tissue samples is reported in this paper. Four brain, 10 liver, and nine lung samples from 11 cases were collected from Akita Prefecture in northern Japan from January to July 1986. The median of free-water 3H concentration was similar in these tissues and agreed well with the co...

journal_title：Health physics

authors： Hisamatsu S,Takizawa Y,Itoh M,Ueno K,Katsumata T,Sakanoue M

更新日期：1989-10-01 00:00:00

abstract：:This paper describes a program of laboratory and field studies undertaken to assess the health impact of radioactive debris from the re-entry of the Soviety nuclear-powered satellite, Cosmos 954, on 24 January 1978. It was estimated that about one-quarter of the reactor core descended over Canada's Northwest Territori...

journal_title：Health physics

authors： Tracy BL,Prantl FA,Quinn JM

更新日期：1984-08-01 00:00:00

abstract：:The apparent risk of childhood leukemia resulting from paternal pre-conception radiation exposure found among children of the Sellafield (West Cumbria, UK) workforce is compared with the apparent risk in a number of other epidemiological studies. In particular, the extent of the incompatibility of the leukemia pre-con...

journal_title：Health physics

authors： Little MP,Charles MW,Wakeford R

更新日期：1995-03-01 00:00:00

abstract：:In the last 50 years several radiation accidents occurred in which industrial radiographers and others suffered severe radiation injuries from inadvertent contact with radiation sources. Such accidents involving acute localized injuries are characterized by a severe initial reaction progressing through erythema to ski...

journal_title：Health physics

authors： Lefaix JL,Daburon F

更新日期：1998-10-01 00:00:00

abstract：:The National Ignition Facility (NIF) has been designed to accommodate some challenging radiological conditions. The high prompt neutron source (up to 1.6 × 10(19) neutrons per shot) results in the need for significant fixed shielding. Concrete shielding approximately 2 m thick is used for the primary (target bay) shie...

journal_title：Health physics

authors： Kohut TR,Brereton SJ,Khater H

更新日期：2013-06-01 00:00:00

abstract：:Design and associated good practices are described for a modular glovebox connector to improve control of radioactive and chemically toxic materials. The connector consists of an anodized aluminum circular port with a mating spacer, gaskets, and retaining rings for joining two parallel ends of commercially available o...

journal_title：Health physics

authors： Hoover MD,Mewhinney CJ,Newton GJ

更新日期：1999-01-01 00:00:00

abstract：:In an effort to reveal the possible underlying causes of radiation-related health care complaints in the State of Texas, complaint data were evaluated using historical Texas Department of Health-Bureau of Radiation Control (TDH-BRC) reports. A major aim of the study was to generate a summary of the most commonly repor...

journal_title：Health physics

authors： Thommen PJ,Emery RJ

更新日期：2006-05-01 00:00:00

abstract：:An addition has been made to an existing software program for calculating shielding thicknesses of barriers for megavoltage radiation therapy beams. This addition calculates the shielding thicknesses required for the roof of a single-story building when adjacent, multi-level buildings are occupied. ...

journal_title：Health physics

authors： Biggs PJ

更新日期：1998-10-01 00:00:00

abstract：:A system for evaluating quality factors, Q, based on the microdosimetric distribution of the radiation field of interest has been set up; it makes use of a specific quality function (SQF) to obtain--given microdosimetric spectra--values for Q. The advantages of a system based on lineal energy are well recognized. Furt...

journal_title：Health physics

authors： Zaider M

更新日期：1996-06-01 00:00:00

abstract：:The uranium industry in the American Southwest has had profoundly negative impacts on American Indian communities. Navajo workers experienced significant health problems, including lung cancer and nonmalignant respiratory diseases, and psychosocial problems, such as depression and anxiety. There were four uranium proc...

journal_title：Health physics

authors： Dawson SE,Madsen GE

更新日期：2011-11-01 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：: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：:During the Full-Scale Radiological Dispersal Device Field Trials carried out in Suffield in 2012, several suites of detection and sampling equipment were used to measure and characterize the explosive dispersal of the short half-life radioactive tracer Lanthanum-140 ((140)La). The equipment deployed included networks ...

journal_title：Health physics

authors： Korpach E,Berg R,Erhardt L,Lebel L,Liu C

更新日期：2016-05-01 00:00:00

abstract：:Diagnostic reference levels (DRLs) for medical x-ray procedures are being implemented currently in the Netherlands. By order of the Dutch Healthcare Inspectorate, a survey has been conducted among 20 Dutch hospitals to investigate the level of implementation of the Dutch DRLs in current radiological practice. It turns...

journal_title：Health physics

authors： Bijwaard H,Valk D,de Waard-Schalkx I

更新日期：2015-04-01 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：:The concentrations of natural alpha-emitting isotopes of thorium (228Th, 230Th and 232Th) have been determined in 22 sets of human tissue samples obtained at autopsy from Grand Junction, CO and in 10 sets from Washington, DC. Tissues included lung, pulmonary lymph nodes, liver, kidney, bone, a few gonads, spleen and t...

journal_title：Health physics

authors： Ibrahim SA,Wrenn ME,Singh NP,Cohen N,Saccomano G

更新日期：1983-01-01 00:00:00

abstract：:Lymphoid lineage recovery and involution after exposure to potentially lethal doses of ionizing radiation have not been well defined, especially the long-term effects in aged survivors and with regard to male/female differences. To examine these questions, male and female C57BL/6 mice were exposed to lethal radiation ...

journal_title：Health physics

authors： Wu T,Plett PA,Chua HL,Jacobsen M,Sandusky GE,MacVittie TJ,Orschell CM

更新日期：2020-11-01 00:00:00

abstract：:The somatic-mutation theory of carcinogenesis has received strong scientific support from results of recent studies on tumor-suppressor genes. We anticipated that people among the high risk for cancer group, either through exposure to various ionizing radiations or by virtue of unique genotypes, would also manifest in...

journal_title：Health physics

authors： Akiyama M,Umeki S,Kusunoki Y,Kyoizumi S,Nakamura N,Mori T,Ishikawa Y,Yamakido M,Ohama K,Kodama T

更新日期：1995-05-01 00:00:00

abstract：:A dosimetry system for computed tomography (CT) examinations, named WAZA-ARI, is being developed to accurately assess radiation doses to patients in Japan. For dose calculations in WAZA-ARI, organ doses were numerically analyzed using average adult Japanese male (JM) and female (JF) phantoms with the Particle and Heav...

journal_title：Health physics

authors： Takahashi F,Sato K,Endo A,Ono K,Ban N,Hasegawa T,Katsunuma Y,Yoshitake T,Kai M

更新日期：2015-08-01 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：:In the assessment of risk, several factors affect predictions: selection of reactive agent, selection of tumor incidence data, modeling of dose, scaling across species, adjustment for differences in duration and frequency of exposure, and selection of the most suitable risk extrapolation model. If the endpoints, expos...

journal_title：Health physics

authors： Beliles RP,Parker JC

更新日期：1989-01-01 00:00:00

abstract：:Linear accelerator workloads for each available photon energy are important quantities to know for radiation safety considerations, and presented is a technique to measure the workload using paired detectors. The signals from the two detectors can give sufficient information to separate the signal contributions from 6...

journal_title：Health physics

authors： Corns R,Schroeder C,Sandhu G,Henderson K,McKay I

更新日期：2019-09-01 00:00:00

abstract：:The importance of the ingestion dose pathways in collective effective dose due to severe reactor accidents is evaluated by studying two different radioactive accidental releases. A short description of the ingestion dose pathway model is also given. Typically, exposure via contaminated food without countermeasures cau...

journal_title：Health physics

authors： Partanen JP,Savolainen I

更新日期：1986-02-01 00:00:00

abstract：:To assess internal annual dose in the general public in Aomori Prefecture, Japan, 80 duplicate cooked diet samples, equivalent to the food consumed over a 400-d period by one person, were collected from 100 volunteers in Aomori City and the village of Rokkasho during 2006–2010 and were analyzed for 11 radionuclides. T...

journal_title：Health physics

authors： Ohtsuka Y,Kakiuchi H,Akata N,Takaku Y,Hisamatsu S

更新日期：2013-10-01 00:00:00

abstract：:The radiation safety implications following the administration of 131I for the treatment of Grave's disease to a patient undergoing home-based renal dialysis was investigated. External dose-rate measurements from the patient revealed a peak value at around day 2, post administration. The effective half-life was determ...

journal_title：Health physics

authors： Simpson JB,Godwin GA

更新日期：2006-12-01 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 current feasibility of protecting emergency responders through bone marrow selective shielding is highlighted in the recent OECD/NEA report on severe accident management. Until recently, there was no effective personal protection from externally penetrating gamma radiation. In Chernobyl, first-responders wore make...

journal_title：Health physics

authors： Waterman G,Kase K,Orion I,Broisman A,Milstein O

更新日期：2017-09-01 00:00:00