Comparison of photon interaction parameters of some tissues and their substitutes.

abstract：:This presentation provides an overview of the Commonwealth of Pennsylvania's experiences and ongoing studies related to technologically enhanced, naturally occurring radioactive material (TENORM) in the oil and gas industry. It has been known for many years that Pennsylvania's geology is unique, with several areas hav...

journal_title：Health physics

authors： Allard DJ

更新日期：2015-02-01 00:00:00

abstract：:The real-time radiation monitoring system (RMS) in the Synchrotron Radiation Research Center (SRRC) has been upgraded significantly during the past years. The new framework of the RMS is built on the popular network technology, including Ethernet hardware connections and Web-based software interfaces. It features virt...

journal_title：Health physics

authors： Sheu RJ,Wang JP,Chen CR,Liu J,Chang FD,Jiang SH

更新日期：2003-10-01 00:00:00

abstract：:Absorbed dose and dose equivalent conversion coefficients are routinely used in personnel dosimetry programs. These conversion coefficients can be applied to particle fluences or to measured air kerma values to determine appropriate operational monitoring quantities such as the ambient dose equivalent or personal dose...

journal_title：Health physics

authors： Veinot KG,Hertel NE

更新日期：2007-02-01 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：: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：: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：:Electromagnetic interference with critical medical care devices has been reported by various groups. Previous studies have demonstrated that volumetric and syringe pumps are susceptible to false alarm buzzing and blocking when exposed to various electromagnetic sources. The risk of electromagnetic interference depends...

journal_title：Health physics

authors： Calcagnini G,Floris M,Censi F,Cianfanelli P,Scavino G,Bartolini P

更新日期：2006-04-01 00:00:00

abstract：:The longterm behavior of 137Cs in milk of a Bavarian farm (farm A) deposited as a consequence of the Chernobyl accident has been followed from April 1986 until August 1994. On the basis of activity measurements in milk and feed, transfer coefficients for the different seasons have been estimated in order to see any ch...

journal_title：Health physics

authors： Voigt G,Rauch F,Paretzke HG

更新日期：1996-09-01 00:00:00

abstract：:The calculation of radiation dose estimates to the fetus is often important in nuclear medicine. To obtain the best estimates of radiation dose to the fetus, the best biological and physical models should be employed. In this paper the most recent data available on the placental crossover of many radiopharmaceuticals ...

journal_title：Health physics

authors： Russell JR,Stabin MG,Sparks RB

更新日期：1997-11-01 00:00:00

abstract：:Radon progeny are positively charged immediately after formation. A negatively charged electret collects radon progeny atoms which are produced in the diffusion chamber. The detector sensitivity may be increased by using an electret in front of solid state nuclear track detector. Dependence of detection sensitivity on...

journal_title：Health physics

authors： Nikezić D,Krstić D

更新日期：1995-12-01 00:00:00

abstract：:A dose reconstruction was carried out on a case in which a worker was exposed to soft x rays using time motion studies, an ionization chamber for low energy photon measurements, and CdZnTe (CZT) spectrometry. The worker estimated his dose to be over 600 mSv. However, the doses to the skin and testes were evaluated to ...

journal_title：Health physics

authors： Suzuki T,Matsumoto M,Kim E,Yajima K,Akashi M,Fujimoto K

更新日期：2006-08-01 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：:The potential harm to a population exposed to radiation from a nuclear accident, such as the one that recently occurred at the Chernobyl plant in the Soviet Union, is of concern to many individuals. The average dose to a population is a useful index of harm (IH) only for linear, nonthreshold-type, quantal (i.e., all-o...

journal_title：Health physics

authors： Scott BR

更新日期：1988-08-01 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：:The Pakistan Research Reactor-I (PARR-I) is a swimming pool type research reactor originally designed and built for a thermal power of 5 MW using High Enriched Uranium (HEU) fuel. In 1990-1991 the reactor was redesigned, partially decommissioned and recommissioned to operate with Low Enriched Uranium (LEU) fuel at a t...

journal_title：Health physics

authors： Ali A,Orfi SD,Manzur H,Aslam M

更新日期：2001-05-01 00:00:00

abstract：:The most effective countermeasure for radioiodine contamination of milk is to provide dairy animals with uncontaminated feed, with the added advantage that it will be effective for other radionuclides in the fallout. Another effective response is to process the milk into storable dairy products for an appropriate leng...

journal_title：Health physics

authors： Howard BJ,Voigt G,Segal MG,Ward GM

更新日期：1996-11-01 00:00:00

abstract：:Medical health physics is the profession dedicated to the protection of healthcare providers, members of the public, and patients from unwarranted radiation exposure. Medical health physicists must be knowledgeable in the principles of health physics and in the applications of radiation in medicine. Advances in medica...

journal_title：Health physics

authors： Vetter RJ

更新日期：2004-05-01 00:00:00

abstract：:Radiation exposure of the biota in the shoreline area of the Chernobyl Nuclear Power Plant Cooling Pond was assessed to evaluate radiological consequences from the decommissioning of the Cooling Pond. This paper addresses studies of radioactive contamination of the terrestrial faunal complex and radionuclide concentra...

journal_title：Health physics

authors： Oskolkov BY,Bondarkov MD,Gaschak SP,Maksimenko AM,Hinton TG,Coughlin D,Jannik GT,Farfán EB

更新日期：2011-10-01 00:00:00

abstract：:Traditionally, medical radiation emergency plans have provided for the receipt and care of a limited number of individuals, usually no more than two or three at any given time. Large numbers of contaminated, uninjured individuals cannot be effectively handled in the emergency departments (EDs) of hospitals as they pre...

journal_title：Health physics

authors： Miller K,Groff L,Erdman M,King S

更新日期：2005-08-01 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：:This study was carried out to determine the level of potentially off-damaging infrared (IR) radiation in the iron and steel industry. Determinations of IR radiation were made in different positions in many types of processes. Forging was found to give the highest radiant exposure to the eyes, while workers in electros...

journal_title：Health physics

authors： Lydahl E,Glansholm A,Levin M

更新日期：1984-03-01 00:00:00

abstract：:During an invited visit to the University of Pittsburgh Medical Center (UPMC) gamma knife facility, officials from the Nuclear Regulatory Commission (NRC) observed what they considered as an apparent violation of the physical presence requirements specified in 10 CFR 35.615(f)(3). This event initiated an inspection an...

journal_title：Health physics

authors： Sheetz M,Swanson D,Yates B

更新日期：2009-02-01 00:00:00

abstract：:This study was motivated by the efforts to evaluate radiation risk for leukemia incidence in the Techa River cohort, where the main bone marrow dose contributors were Sr (bone-seeking beta emitters). Energy deposition in bone marrow targets was evaluated by simulating radiation particle transport using computational p...

journal_title：Health physics

authors： Shishkina EA,Timofeev YS,Volchkova AY,Sharagin PA,Zalyapin VI,Degteva MO,Smith MA,Napier BA

更新日期：2020-01-01 00:00:00

abstract：:The prevalence of thyroid nodules and thyroid cancer was studied in the indigenous population residing on Ebeye Island, Kwajalein Atoll, in the Republic of the Marshall Islands. This island, centrally located in the nation, is home to about 25% of the nation's population, many who have migrated there from other atolls...

journal_title：Health physics

authors： Takahashi T,Trott KR,Fujimori K,Simon SL,Ohtomo H,Nakashima N,Takaya K,Kimura N,Satomi S,Schoemaker MJ

更新日期：1997-07-01 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：:The federal government has had the ability to respond to incidents of national significance for decades. Since 11 September 2001, there have been enhancements to existing federal assets and the creation of new federal assets. This presentation will provide an overview of the more significant federal assets. Pivotal to...

journal_title：Health physics

authors： Remick AL,Crapo JL,Woodruff CR

更新日期：2005-11-01 00:00:00

abstract：:The distribution of 239Pu in a human whole body is reported. The body contained 246 Bq of 239Pu of which 130 Bq (52.8%) was found in the lungs and associated lymph nodes. Of the remaining 116 Bq (47.2%) that constituted the systemic deposition, 51.2 Bq (44%) were in the skeleton, 48.6 Bq (42%) in the liver, and the re...

journal_title：Health physics

authors： McInroy JF,Kathren RL,Voelz GL,Swint MJ

更新日期：1991-03-01 00:00:00

abstract：:This document describes the attributes of an alpha spectroscopy counting and analysis system called Low Level Pulse Height Analysis (LLPHA). It was developed for multi-sample alpha spectroscopy analysis. The LLPHA system is controlled by a MIK-11/2 microcomputer with 28K of memory and uses a double-density, dual flopp...

journal_title：Health physics

authors： Guilmette RA,Archibeque FA

更新日期：1984-03-01 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：: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