Measurements in radioactivity should not be recorded as less than MDA.

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：:Following the attacks of 11 September 2001, emergency preparedness within the U.S. Department of Health and Human Services, as well as at the Department of Defense and other federal agencies, received higher visibility, new mandates and increased funding. Emergency deployment teams increased the frequency of drills to...

journal_title：Health physics

authors： Grace MB,Cliffer KD,Moyer BR,Coleman CN,Prasher JM,Hatchett R,Mercier J,Manning RG,Bader JL,Disbrow GL,Kovacs GR

更新日期：2011-09-01 00:00:00

abstract：:The present study aimed to evaluate the effects of high background radiation (HBR) on mortality. A cohort of 31,604 men and women aged 30-74 y living in the study area in Guangdong Province, China, was followed during the period 1979-1998. The information on deaths and migrations of cohort members was collected by vis...

journal_title：Health physics

authors： Tao Z,Akiba S,Zha Y,Sun Q,Zou J,Li J,Liu Y,Yuan Y,Tokonami S,Morishoma H,Koga T,Nakamura S,Sugahara T,Wei L

更新日期：2012-02-01 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：:The fusion research conducted at the Laboratory for Laser Energetics requires large amounts of tritium and generates brief but very high, neutron fluxes. This raises a number of radiological concerns that have been satisfactorily addressed via a combination of engineering controls, training, and administrative control...

journal_title：Health physics

authors： Karam PA,Pien G

更新日期：2001-11-01 00:00:00

abstract：:Data on occupational radiation exposure from nuclear medicine procedures for the time period of the 1950s through the 1970s is important for retrospective health risk studies of medical personnel who conducted those activities. However, limited information is available on occupational exposure received by physicians a...

journal_title：Health physics

authors： Drozdovitch V,Brill AB,Mettler FA Jr,Beckner WM,Goldsmith SJ,Gross MD,Hays MT,Kirchner PT,Langan JK,Reba RC,Smith GT,Bouville A,Linet MS,Melo DR,Lee C,Simon SL

更新日期：2014-10-01 00:00:00

abstract：:South Africa contains some of the world's largest mineral deposits, which include uranium. Uranium is mined as a by-product of gold production. The uranium content of the surface soil and groundwater in South Africa has been measured and shows marked variation, depending on location. Herbal remedies are collected by t...

journal_title：Health physics

authors： Steenkamp V,Stewart MJ,Chimuka L,Cukrowska E

更新日期：2005-12-01 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：:Haemopoietic stem cell assays allow investigation of local radiation damage at any time after contamination. These techniques were used to determine the relative effectiveness of 241Am and 226Ra in inducing damage in various cortical and trabecular bone marrow sites. Male Balb/c mice were injected with either 230 or 6...

journal_title：Health physics

authors： Schoeters GE,Vanderborght OL

更新日期：1983-01-01 00:00:00

abstract：:The security of medical radioactive sources, both open and sealed, is an important consideration for reducing the risk of an intentional or inadvertent additional radiation dose to the public, according to the principle of keeping any additional radiation dose as low as reasonably achievable. The detection and followi...

journal_title：Health physics

authors： Kroeger EA,Rupp A,Gregor J

更新日期：2020-07-01 00:00:00

abstract：:In 1992, the University of Texas Health Science Center at Houston (UTHSCH) Radiation Safety Program began assembling data on a monthly basis that described various program drivers and associated activities. At the end of calendar year 2002, a decade of data had been collected, so the information was summarized into a ...

journal_title：Health physics

authors： Emery RJ,Gutierrez JM

更新日期：2014-08-01 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：:For many, the thought of terrorists detonating a dirty bomb--a radiological dispersal device--is frightening. However, the radiation health risks from such an occurrence are small. For most people directly involved, the exposure would have an estimated lifetime health risk that is comparable to the health risk from sm...

journal_title：Health physics

authors： Ring JP

更新日期：2004-02-01 00:00:00

abstract：:Small plastic chambers containing alpha track detectors are often used for measuring indoor concentrations of 222Rn. This paper reports an experimental assessment of sources of error in measurements made with alpha track detector-containing chambers. The results demonstrate the feasibility of a nondestructive test for...

journal_title：Health physics

authors： Dudney CS,Wilson DL,Bertini H,Gammage RB,Otten JA

更新日期：1995-10-01 00:00:00

abstract：:The immersion doses from external exposure to a Gaussian plume of noble gases accidentally released into the atmosphere have been calculated. A numerical integration procedure employing Gauss-Legendre of 64th order has been used. The numerical procedure allows calculating the dose rate at any downwind horizontal or ve...

journal_title：Health physics

authors： Raza S,Avila R

更新日期：2005-09-01 00:00:00

abstract：:Patient exposure to medical and dental x rays has long been of interest to the radiological health community. With the cooperation of state and local agencies and professional groups, the Center for Devices and Radiological Health has conducted three major surveys of patient exposure to x rays. The latest of these sur...

journal_title：Health physics

authors： Johnson DW,Goetz WA

更新日期：1986-01-01 00:00:00

abstract：:The plant uptake of 244Cm, 137Cs, 238Pu and 90Sr was measured for trees in a flood plain forest whose soils were contaminated by aqueous discharges from a nuclear-fuel chemical separations facility. Uptake of the naturally occurring radionuclide 226Ra was also measured. The relative availability of the nuclides was 23...

journal_title：Health physics

authors： Pinder JE 3rd,McLeod KW,Alberts JJ,Adriano DC,Corey JC

更新日期：1984-09-01 00:00:00

abstract：:This paper describes an analytically based method for modeling the time-dependent radionuclide areal densities of contaminated soil surface layers when the soil experiences simultaneous leaching, surface erosion and chain radioactive decay. The model is used to predict time-dependent radionuclide areal densities in a ...

journal_title：Health physics

authors： Jarzemba MS,Manteufel RD

更新日期：1997-12-01 00:00:00

abstract：:Treatment of diseases with x rays began within months of Roentgen's discovery, and within four years x rays were being used successfully for the treatment of skin cancers. Deep-seated cancers began to be treated successfully in the 1920's with the advent of "deep" x-ray units and, especially, once supervoltage therapy...

journal_title：Health physics

authors： Orton CG

更新日期：1995-11-01 00:00:00

abstract：:The natural radioactivity in some rock samples in Ikogosi-Ekiti, Southwestern Nigeria, has been measured using a very sensitive gamma spectroscopic system consisting of a 76 mm x 76 mm NaI(TI) scintillation detector system coupled to a versatile Canberra Series 10 plus multichannel analyzer. The average concentrations...

journal_title：Health physics

authors： Ajayi OS

更新日期：2000-08-01 00:00:00

abstract：:Reduction of dose to exposed personnel during positron emission tomography (PET) installation usually relies on physical shielding. While the major contribution of shielding is unquestioned, it is usually the only method applied. Other methods of reduction, such as working procedure optimization, the position of the f...

journal_title：Health physics

authors： Perez ME,Verde JM,Montes C,Ramos JA,García S,Hernandez J

更新日期：2014-11-01 00:00:00

abstract：:ABSTRACT A significant portion of the cost for D&D is related to low-level waste disposal, decontamination, and final radiological survey. For that reason, a careful cost-benefit analysis must be performed weighing the cost of decontaminating and radiologically surveying the building media for release against the cost...

journal_title：Health physics

authors： Barroso J,Roberts S

更新日期：2003-02-01 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：:In the Goiânia accident, many individuals suffered external and internal contamination. The screening of internal contamination was done through 137Cs urinary excretion. During the first month after the accident, only in-vitro bioassay procedures were done. Incorporation into the body and committed doses were estimate...

journal_title：Health physics

authors： Lipsztein JL,Bertelli L,Melo DR,Azeredo AM,Julião L,Santos MS

更新日期：1991-01-01 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：:Federal agencies have a variety of roles and responsibilities related to communicating with the public before, during, and after a radiological emergency. To better understand the various efforts currently underway, the Radiation Studies Branch of the Centers for Disease Control and Prevention convened a roundtable of...

journal_title：Health physics

authors： Miller CW,McCurley MC

更新日期：2011-11-01 00:00:00

abstract：:The method presented provides an alternative to the shadow shield method for experimentally measuring the contribution due to scattering radiation in a calibration range. Scattering of 0.6616 MeV photons from a Cs irradiator in a calibration range does not only occur due to the walls and floor of the range. It also oc...

journal_title：Health physics

authors： Rowan MS,Blue TE,Lahti E,Talnagi J,Herminghuysen K,Petrie CM

更新日期：2013-09-01 00:00:00

abstract：:The use of nuclear gauges for process control and elemental analysis in the mining industry in Ghana, West Africa, is wide spread and on the increase in recent times. The Ghana Radiation Protection Board regulates nuclear gauges through a system of notification and authorization by registration or licensing, inspectio...

journal_title：Health physics

authors： Faanu A,Darko EO,Awudu AR,Schandorf C,Emi-Reynolds G,Yeboah J,Glover ET,Kattah VK

更新日期：2010-05-01 00:00:00

abstract：:The radiological consequences of using fly ash as a component of cement are discussed. Measurements of the activity concentrations of the fly ash and cement are reported together with measurements of emanation coefficients and exhalation rates. The radon-exhalation rate was found to be significantly lower in concrete ...

journal_title：Health physics

authors： Stranden E

更新日期：1983-02-01 00:00:00

abstract：:A database of soil-to-plant transfer factors for radiocesium and radiostrontium has been compiled for arable crops from published and unpublished sources. The database is more extensive than previous compilations of data published by the International Union of Radioecologists, containing new information for Scandinavi...

journal_title：Health physics

authors： Nisbet AF,Woodman RF

更新日期：2000-03-01 00:00:00