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https://www.readbyqxmd.com/read/28542014/oak-ridge-reservation-environmental-protection-rad-neshaps-radionuclide-inventory-web-database-and-rad-neshaps-source-and-dose-database
#1
Patricia A Scofield, Linda L Smith, David N Johnson
The U.S. Environmental Protection Agency promulgated national emission standards for emissions of radionuclides other than radon from US Department of Energy facilities in Chapter 40 of the Code of Federal Regulations (CFR) 61, Subpart H. This regulatory standard limits the annual effective dose that any member of the public can receive from Department of Energy facilities to 0.1 mSv. As defined in the preamble of the final rule, all of the facilities on the Oak Ridge Reservation, i.e., the Y-12 National Security Complex, Oak Ridge National Laboratory, East Tennessee Technology Park, and any other U...
July 2017: Health Physics
https://www.readbyqxmd.com/read/28541201/palmprint-recognition-based-on-complete-direction-representation
#2
Wei Jia, Bob Zhang, Jingting Lu, Yihai Zhu, Yang Zhao, Wangmeng Zuo, Haibin Ling
Direction information serves as one of the most important features for palmprint recognition. In the past decade, many effective direction representation (DR)-based methods have been proposed and achieved promising recognition performance. However, due to an incomplete understanding for DR, these methods only extract DR in one direction level and one scale. Hence, they did not fully utilized all potentials of DR. In addition, most researchers only focused on the DR extraction in spatial coding domain, and rarely considered the methods in frequency domain...
May 18, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28539853/treatment-of-cancer-and-inflammation-with-low-dose-ionizing-radiation-three-case-reports
#3
Shuji Kojima, Mitsutoshi Tsukimoto, Noriko Shimura, Hironobu Koga, Akishisa Murata, Tsuyoshi Takara
There is considerable evidence from experimental studies in animals, as well as from clinical reports, that low-dose radiation hormesis is effective for the treatment of cancer and ulcerative colitis. In this study, we present 3 case reports that support the clinical efficacy of low-dose radiation hormesis in patients with these diseases. First, a patient with prostate cancer who had undergone surgical resection showed a subsequent increase in prostate-specific antigen (PSA). His PSA value started decreasing immediately after the start of repeated low-dose X-ray irradiation treatment and remained low thereafter...
January 2017: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/28532479/education-and-employment-in-patients-with-juvenile-idiopathic-arthritis-a-standardized-comparison-to-the-german-general-population
#4
Jenny Schlichtiger, Johannes-Peter Haas, Swaantje Barth, Betty Bisdorff, Lisa Hager, Hartmut Michels, Boris Hügle, Katja Radon
BACKGROUND: Although several studies show that JIA-patients have significantly lower employment rates than the general population, the research on educational and occupational attainments in patients with juvenile idiopathic arthritis (JIA) remain conflicting most likely due to small sample sizes. Therefore, aim of this study is to compare the educational achievements and employment status of 3698 JIA-patients with the German general population (GGP). METHODS: "SEPIA" was a large cross-sectional study on the current status of a historic cohort of JIA-patients treated in a single center between 1952 and 2010...
May 22, 2017: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/28525938/logistic-regression-model-for-detecting-radon-prone-areas-in-ireland
#5
J Elío, Q Crowley, R Scanlon, J Hodgson, S Long
A new high spatial resolution radon risk map of Ireland has been developed, based on a combination of indoor radon measurements (n=31,910) and relevant geological information (i.e. Bedrock Geology, Quaternary Geology, soil permeability and aquifer type). Logistic regression was used to predict the probability of having an indoor radon concentration above the national reference level of 200Bqm(-3) in Ireland. The four geological datasets evaluated were found to be statistically significant, and, based on combinations of these four variables, the predicted probabilities ranged from 0...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28520643/risk-of-lung-cancer-mortality-in-nuclear-workers-from-internal-exposure-to-alpha-particle-emitting-radionuclides
#6
James Grellier, Will Atkinson, Philippe Bérard, Derek Bingham, Alan Birchall, Eric Blanchardon, Richard Bull, Irina Canu Guseva, Cécile Challeton-de Vathaire, Rupert Cockerill, Minh T Do, Hilde Engels, Jordi Figuerola, Adrian Foster, Luc Holmstock, Christian Hurtgen, Dominique Laurier, Matthew Puncher, Anthony E Riddell, Eric Samson, Isabelle Thierry-Chef, Margot Tirmarche, Martine Vrijheid, Elisabeth Cardis
BACKGROUND: Carcinogenic risks of internal exposures to alpha-emitters (except radon) are poorly understood. Since exposure to alpha particles-particularly through inhalation-occurs in a range of settings, understanding consequent risks is a public health priority. We aimed to quantify dose-response relationships between lung dose from alpha-emitters and lung cancer in nuclear workers. METHODS: We conducted a case-control study, nested within Belgian, French, and UK cohorts of uranium and plutonium workers...
May 17, 2017: Epidemiology
https://www.readbyqxmd.com/read/28511410/preventive-training-among-medical-interns-in-mexico-city-and-its-association-with-needlestick-and-sharp-injuries-a-cross-sectional-study
#7
Victor Hugo Garcia, Katja Radon
INTRODUCTION: Medical students are a vulnerable group for the acquisition of blood borne pathogens due to their lack of experience. In Europe and Asia preventive training programs have reduced accidental exposures. AIM: The aim of the study was to compare the lifetime prevalence of Needlestick and Sharp Objects Injuries (NSIs) among medical interns who received preventive training versus those without such training in Mexico City. MATERIALS AND METHODS: In 2013, a cross-sectional study was performed applying an anonymous self-administrated questionnaire...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28510733/radon-dosimetry-for-workers-icrp-s-approach
#8
James W Marsh, Dominique Laurier, Margot Tirmarche
The International Commission on Radiological Protection (ICRP) has recently published two reports on radon exposure; Publication 115 on lung cancer risks from radon and radon progeny and Publication 126 on radiological protection against radon exposure. A specific graded approach for the control of radon in workplaces is recommended where a dose assessment is required in certain situations. In its forthcoming publication on Occupational Intakes of Radionuclides (OIR) document, Part 3, effective dose coefficients for radon and thoron will be provided...
May 16, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28498931/protective-effects-of-hot-spring-water-drinking-and-radon-inhalation-on-ethanol-induced-gastric-mucosal-injury-in-mice
#9
Reo Etani, Takahiro Kataoka, Norie Kanzaki, Akihiro Sakoda, Hiroshi Tanaka, Yuu Ishimori, Fumihiro Mitsunobu, Takehito Taguchi, Kiyonori Yamaoka
Radon therapy using radon (222Rn) gas is classified into two types of treatment: inhalation of radon gas and drinking water containing radon. Although short- or long-term intake of spa water is effective in increasing gastric mucosal blood flow, and spa water therapy is useful for treating chronic gastritis and gastric ulcer, the underlying mechanisms for and precise effects of radon protection against mucosal injury are unclear. In the present study, we examined the protective effects of hot spring water drinking and radon inhalation on ethanol-induced gastric mucosal injury in mice...
May 12, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28492468/radon-mitigation-approach-in-a-laboratory-measurement-room
#10
Patricia Blanco-Rodríguez, Luis Alfonso Fernández-Serantes, Alberto Otero-Pazos, José Luis Calvo-Rolle, Francisco Javier de Cos Juez
Radon gas is the second leading cause of lung cancer, causing thousands of deaths annually. It can be a problem for people or animals in houses, workplaces, schools or any building. Therefore, its mitigation has become essential to avoid health problems and to prevent radon from interfering in radioactive measurements. This study describes the implementation of radon mitigation systems at a radioactivity laboratory in order to reduce interferences in the different works carried out. A large set of radon concentration samples is obtained from measurements at the laboratory...
May 11, 2017: Sensors
https://www.readbyqxmd.com/read/28483971/association-of-household-cleaning-agents-and-disinfectants-with-asthma-in-young-german-adults
#11
Tobias Weinmann, Jessica Gerlich, Sabine Heinrich, Dennis Nowak, Erika von Mutius, Christian Vogelberg, Jon Genuneit, Stefanie Lanzinger, Saba Al-Khadra, Tina Lohse, Irina Motoc, Viola Walter, Katja Radon
OBJECTIVES: We scrutinised the association of private use of household sprays and disinfectants with asthma incidence in young adults in the transition from school to working life. METHODS: Between 2007 and 2009,2051 young adults aged 19-24 years living in two major German cities took part in the Study on Occupational Allergy Risks II. Self-reported exposure to household sprays and disinfectants was characterised according to a composite score for frequency of use as no use (score=0), low use (score between 1 and the median), medium use (score between the median and the 90th percentile) and high use (score above the 90th percentile)...
May 8, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28476188/environmental-exposure-and-risk-of-childhood-leukemia-an-overview
#12
REVIEW
Joachim Schüz, Friederike Erdmann
Childhood leukemia is the most common cancer diagnosed in children worldwide. However, only a few causes have been established so far, mainly some genetic syndromes and high doses of ionizing radiation. Major efforts have been undertaken to study the relationship between environmental factors and the risk of childhood leukemia, inspired by geographical variation in incidence rates. Some evidence has emerged for parental occupational exposures to pesticides, whereas there is less evidence for an association with postnatal pesticide exposure...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28472745/the-temperature-dependence-of-adsorption-coefficients-of-222-rn-on-activated-charcoal-an-experimental-study
#13
Lu Guo, Yunxiang Wang, Lei Zhang, Zhi Zeng, Wenbin Dong, Qiuju Guo
The radon adsorption coefficient of activated charcoal (K) has exponential relationship with temperature theoretically, but few experiment results of K at temperature below 0 ℃ were given. In this study, K were measured using a flow-through system with activated charcoal in cylindrical adsorption beds at temperature adjusted from room temperature to -48°C using liquid nitrogen. Results are consistent with theory and show that the adsorption coefficient at -48°C is nearly 25 times higher than that at 23 ℃...
April 20, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28464032/estimating-the-position-and-orientation-of-a-mobile-robot-with-respect-to-a-trajectory-using-omnidirectional-imaging-and-global-appearance
#14
Luis Payá, Oscar Reinoso, Luis M Jiménez, Miguel Juliá
Along the past years, mobile robots have proliferated both in domestic and in industrial environments to solve some tasks such as cleaning, assistance, or material transportation. One of their advantages is the ability to operate in wide areas without the necessity of introducing changes into the existing infrastructure. Thanks to the sensors they may be equipped with and their processing systems, mobile robots constitute a versatile alternative to solve a wide range of applications. When designing the control system of a mobile robot so that it carries out a task autonomously in an unknown environment, it is expected to take decisions about its localization in the environment and about the trajectory that it has to follow in order to arrive to the target points...
2017: PloS One
https://www.readbyqxmd.com/read/28458541/selection-of-potential-iron-oxide-nanoparticles-for-breast-cancer-treatment-based-on-in-vitro-cytotoxicity-and-cellular-uptake
#15
Johanna M Poller, Jan Zaloga, Eveline Schreiber, Harald Unterweger, Christina Janko, Patricia Radon, Dietmar Eberbeck, Lutz Trahms, Christoph Alexiou, Ralf P Friedrich
Superparamagnetic iron oxide nanoparticles (SPIONs) are promising tools for the treatment of different diseases. Their magnetic properties enable therapies involving magnetic drug targeting (MDT), hyperthermia or imaging. Depending on the intended treatment, specific characteristics of SPIONs are required. While particles used for imaging should circulate for extended periods of time in the vascular system, SPIONs intended for MDT or hyperthermia should be accumulated in the target area to come into close proximity of, or to be incorporated into, specific tumor cells...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28458411/fast-determination-of-indoor-radon-222-rn-concentration-using-liquid-scintillation-counting
#16
H Bem, M Długosz-Lisiecka, S Janiak, D Mazurek, P Szajerski
The indoor (222)Rn radionuclide was directly absorbed in typical 20 ml glass scintillation vials by passing -3 dm(3) of ambient air through 16 ml of water-immiscible non-volataile scintillation cocktail Ultima-Gold F for 10 min. The activity of radon and its two α-emitting daughters: (218)Po and (214)Po, was determined with the BetaScout low-background liquid scintillation counter. The limit of (222)Rn detection is 9 Bq/m(3), and the quantification limit with 20% relative accuracy is 28 Bq/m(3). The results of the indoor Rn measurement in different houses showed good consistency with results obtained from a Sarad EQF 3220 device...
2017: Journal of Radioanalytical and Nuclear Chemistry
https://www.readbyqxmd.com/read/28447252/a-preliminary-study-for-conducting-a-rational-assessment-of-radon-exposure-levels
#17
Hyung-Jin Jeon, Dae-Ryoung Kang, Sang-Baek Go, Tae-Hyun Park, Si-Hyun Park, Jung-Eun Kwak, Cheol-Min Lee
The aim of this study was to determine the factors that go into a highly reliable estimate of radon exposure levels for use in setting up the case-control study. To this end, the present study conducted a multi-faceted investigation of the distribution of radon concentrations in the bedrooms and living rooms of 400 households in the target areas during the winter months from December 2014 to February 2015. We determined that taking the mean value of the radon concentration levels detected in the bedroom and living room as the representative value of residential concentration is appropriate, given the usability of previous research data and the difference in the concentration levels between the two...
April 26, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28444252/accurate-measurement-of-indoor-radon-concentration-using-a-low-effective-volume-radon-monitor
#18
Aya Tanaka, Nodoka Minami, Yumi Yasuoka, Takeshi Iimoto, Yasutaka Omori, Hiroyuki Nagahama, Jun Muto, Takahiro Mukai
AlphaGUARD is a low-effective volume detector and one of the most popular portable radon monitors which is currently available. This study investigated whether AlphaGUARD can accurately measure the variable indoor radon levels. The consistency of the radon-concentration data obtained by AlphaGUARD is evaluated against simultaneous measurements by two other monitors (each ~10 times more sensitive than AlphaGUARD). When accurately measuring radon concentration with AlphaGUARD, we found that the net counts of the AlphaGUARD were required of at least 500 counts, <25% of the relative percent difference...
April 24, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28437900/model-and-reconstruction-of-a-k-edge-contrast-agent-distribution-with-an-x-ray-photon-counting-detector
#19
Bo Meng, Wenxiang Cong, Yan Xi, Bruno De Man, Jian Yang, Ge Wang
Contrast-enhanced computed tomography (CECT) helps enhance the visibility for tumor imaging. When a high-Z contrast agent interacts with X-rays across its K-edge, X-ray photoelectric absorption would experience a sudden increment, resulting in a significant difference of the X-ray transmission intensity between the left and right energy windows of the K-edge. Using photon-counting detectors, the X-ray intensity data in the left and right windows of the K-edge can be measured simultaneously. The differential information of the two kinds of intensity data reflects the contrast-agent concentration distribution...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437651/population-attributable-risk-associated-with-lung-cancer-induced-by-residential-radon-in-canada-sensitivity-to-relative-risk-model-and-radon-probability-density-function-choices-in-memory-of-professor-jan-m-zielinski
#20
Mo'tassem Al-Arydah
Indoor radon has been identified as the second leading cause of lung cancer after tobacco smoking. The Population Attributable Risk (PAR) estimates the proportion of lung cancer cases associated with indoor radon exposure. Different relative risk (RR) models have been used in the literature to calculate PAR. The aim of this study is to assess how sensitive PAR is to the relative risk model and radon probability distribution functions choices. METHODS: Using Canadian observed first floor radon data collected by Health Canada during the period October 2010 to March 2011, seven common PAR radon models used for North American miners and dwelling scenarios were applied...
April 21, 2017: Science of the Total Environment
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