Academic literature on the topic 'Radon analysis'

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Journal articles on the topic "Radon analysis"

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Wang, Xiao Qun. "Radon Anomaly Analysis of Engineering Slopes." Advanced Materials Research 261-263 (May 2011): 1161–66. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.1161.

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For various engineering slopes, due to unloading relaxation of the rock mass or sliding disintegration of the slope, the cracks inside the slope will open by different extent, thus when measuring radon content, different parts of the slope will have different radon content anomaly. Through analyzing radon content anomaly, information as the landslide boundary and structure zoning of the slope rock mass, etc can be obtained. Landslide boundaries and rock mass structure zoning and other information can be identified because of radon anomalies analysis. Through radon anomalies analysis on two projects, landslide boundary identification and zoning on bank-slope adit rock mass structure, it has proved that radon anomalies analysis could be well used as a complementary method to provide more analysis data and thus provide objective scientific basis for slope stability study. The analysis method used is simple, easy to operate, and low in cost. In the analysis, it shall be noted that removing interference from groundwater, desiccant humidity should be excluded.
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Kadir, Abdumomin, Lei Zhang, Qiuju Guo, and Juncheng Liang. "Efficiency Analysis and Comparison of Different Radon Progeny Measurement Methods." Scientific World Journal 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/269168.

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Radon exposure to the public contributes more than half of all the radiation doses caused by natural radiation; accurate measurement of radon progeny is quite essential for the dose evaluation of radon exposure in environment. For the purpose of establishing a radon progeny standard and controlling measurement quality of commercial devices, it is quite important to analyze the efficiency of different measurement methods and determine which would be the most appropriate for radon progeny measurements. Through theoretical analysis and experimental measurement, some commonly used measurement methods were compared in this study and the development trends of those methods were reviewed. Results show that for radon progeny measurement, the spectroscopic analysis method is better than the gross count method, while least-square calculation methods is better than traditional three-count or five-count method. Multiperiod counting ofαplusβspectrum as well as using weighted least-square calculation method might be the best choice for accurate measurement on radon progeny in standard radon chamber when calibrating commercial radon progeny monitors.
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Jiang, Fu Liang, Zeng Guang Yang, Xiang Wu Qi, and Xiang Yang Li. "The Indoor Radon Concentration Measurement and Analysis in a University and its Adjacent Areas." Applied Mechanics and Materials 737 (March 2015): 512–15. http://dx.doi.org/10.4028/www.scientific.net/amm.737.512.

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Radon is a radioactive gas, high concentrations of radon in the environment can cause lung cancer, leukemia and other diseases. In this paper, indoor radon concentration in different places were measured and analyzed by using the RAD-7 radon monitor in a university and its adjacent areas. On-site measurements show that within 24 hours the indoor radon concentration versus time has certain regularity, different interior architectural decoration materials has a certain influence on the radon concentration, the radon concentrations in long confined spaces are significantly higher than those places frequently ventilated, floor height and ventilation conditions have a greater impact on the radon concentration. This research can provide a reference for future prevention and control of radon hazards.
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Neugebauer, Thomas, Hans Hingmann, Jonas Buermeyer, Volker Grimm, and Joachim Breckow. "Radon emission rate and analysis of its influencing parameters." Nukleonika 61, no. 3 (September 1, 2016): 337–42. http://dx.doi.org/10.1515/nuka-2016-0056.

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Abstract The geological and structural conditions define the radon situation inside a building. While the geological realities can be specified by the content of radium-226 and the ratio of radon-222 emitted from the ground the structural conditions are defined by the tightness of the building envelope. The radon concentration inside has an unsteady character, which is caused by meteorological conditions outside and the air change rate (ACH or ACR), which in turn is influenced by the residents’ behaviour such as venting and heating. For the assessment of the radon exposition, it is necessary to perform measurements for a long time. An approach to reduce this time by eliminating the inhabitants influence on the radon concentration is the radon emission rate, also known as radon entry rate. This variable is based on the measurement of the radon concentration and the parallel determination of the air change rate via a tracer gas method, the result expresses a released activity per time. Due to their noisy character, it is necessary to apply a smoothing algorithm to the input parameters. In addition to mean values, the use of window functions, known from digital signal processing, was analysed. For the verification of the whole calculation procedure, simulations and measurements under defined conditions were used. Furthermore, measurements in an uninhabited house showed proof of the capability of the assessment of the radon potential. First examinations of influencing parameters of the radon emission rate showed a possible dependence on the temperature difference inside and outside the building.
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R. Stanifer, Stacy, and Ellen J. Hahn. "Analysis of Radon Awareness and Disclosure Policy in Kentucky: Applying Kingdon’s Multiple Streams Framework." Policy, Politics, & Nursing Practice 21, no. 3 (May 11, 2020): 132–39. http://dx.doi.org/10.1177/1527154420923728.

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The purpose of this article is to analyze radon awareness and disclosure policy proposed during the 2018 Kentucky General Assembly using Kingdon’s Multiple Stream Framework. Radon gas is the second leading cause of lung cancer. Exposure to radon occurs largely in the home. The proportion of homeowners who have completed radon testing remains low, and home radon testing is voluntary in most states. The Environmental Law Institute recommends states enact policies to promote radon awareness and testing. The most common radon awareness policy mandates radon disclosure during a real estate transaction. A bill to mandate radon disclosure during a real estate transaction was proposed during the 2018 Kentucky General Assembly but was met with opposition and was not filed. As a policy alternative, an administrative regulation to amend the Form for Seller’s Disclosure of Conditions was proposed to the Kentucky Real Estate Commission. Administrative regulations set forth by government regulatory agencies are equally enforceable and may be a more politically feasible alternative to enacting public policy. Nurses are positioned to promote the health of patients and populations. Nurses advocating for radon control legislation and/or administrative regulations may push radon control policy higher on the governmental decision agenda leading to policy change to decrease the development of lung cancer.
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Gonzalez, Fulton B. "Radon transforms on Grassmann manifolds." Journal of Functional Analysis 71, no. 2 (April 1987): 339–62. http://dx.doi.org/10.1016/0022-1236(87)90008-5.

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Ma, Ziping, Baosheng Kang, Ke Lv, and Mingzhu Zhao. "Nonlinear Radon Transform Using Zernike Moment for Shape Analysis." Computational and Mathematical Methods in Medicine 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/208402.

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We extend the linear Radon transform to a nonlinear space and propose a method by applying the nonlinear Radon transform to Zernike moments to extract shape descriptors. These descriptors are obtained by computing Zernike moment on the radial and angular coordinates of the pattern image's nonlinear Radon matrix. Theoretical and experimental results validate the effectiveness and the robustness of the method. The experimental results show the performance of the proposed method in the case of nonlinear space equals or outperforms that in the case of linear Radon.
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Zhang, Wei, Dongsheng Zhang, Xufeng Wang, Mengtang Xu, and Hongzhi Wang. "Analysis of Mathematical Model for Migration Law of Radon in Underground Multilayer Strata." Mathematical Problems in Engineering 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/250852.

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This paper summarized the separation process of radon based on its geophysical-chemical properties. Taking into account the geological conditions of mining, the mathematical model of radon migration in underground multilayer strata (UMS) was established to investigate the distribution law of radon concentration in UMS. It was found that the distribution of radon concentration in UMS is affected by both the properties of the strata and the depth of cover and the radon concentration law varies at different depths even in the same layer stratum. At last, in order to validate the derivation result of the mathematical model of radon migration in UMS, the actual measured values (AMV) and the calculated values (CV) were compared further. As a result, the CV was found to be approximately equal to the AMV with deviation values (DV) less than 5%, which indicates that the derivation result of the mathematical model of radon migration in UMS is correct.
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Henschel (INVITED), D. B. "Analysis of Radon Mitigation Techniques Used in Existing US Houses." Radiation Protection Dosimetry 56, no. 1-4 (December 1, 1994): 21–27. http://dx.doi.org/10.1093/oxfordjournals.rpd.a082416.

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Abstract This paper reviews the full range of techniques that have been installed in existing US houses for the purpose of reducing indoor radon concentrations resulting from soil gas entry. The review addresses the performance, installation and operating costs, applicability, mechanisms, advantages, and disadvantages of each radon mitigation technique. Active soil depressurisation (ASD) techniques are the measures most widely used by mitigation contractors. ASD techniques consistently and reliably provide the highest radon reductions, at costs often competitive with the less effective alternatives. The large majority of existing US houses having elevated radon can be effectively treated using ASD. Various other techniques can be used in houses where ASD is difficult or impractical to apply, or where lesser radon reductions are acceptable. However, these other techniques are always less effective, less reliable, or less well demonstrated than ADS.
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LI, YONGMEI, WANYU TAN, KAIXUAN TAN, ZEHUA LIU, and YANSHI XIE. "FRACTAL AND CHAOS ANALYSIS FOR DYNAMICS OF RADON EXHALATION FROM URANIUM MILL TAILINGS." Fractals 24, no. 03 (August 30, 2016): 1650029. http://dx.doi.org/10.1142/s0218348x16500298.

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Tailings from mining and milling of uranium ores potentially are large volumes of low-level radioactive materials. A typical environmental problem associated with uranium tailings is radon exhalation, which can significantly pose risks to environment and human health. In order to reduce these risks, it is essential to study the dynamical nature and underlying mechanism of radon exhalation from uranium mill tailings. This motivates the conduction of this study, which is based on the fractal and chaotic methods (e.g. calculating the Hurst exponent, Lyapunov exponent and correlation dimension) and laboratory experiments of the radon exhalation rates. The experimental results show that the radon exhalation rate from uranium mill tailings is highly oscillated. In addition, the nonlinear analyses of the time series of radon exhalation rate demonstrate the following points: (1) the value of Hurst exponent much larger than 0.5 indicates non-random behavior of the radon time series; (2) the positive Lyapunov exponent and non-integer correlation dimension of the time series imply that the radon exhalation from uranium tailings is a chaotic dynamical process; (3) the required minimum number of variables should be five to describe the time evolution of radon exhalation. Therefore, it can be concluded that the internal factors, including heterogeneous distribution of radium, and randomness of radium decay, as well as the fractal characteristics of the tailings, can result in the chaotic evolution of radon exhalation from the tailings.
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Dissertations / Theses on the topic "Radon analysis"

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Hung, Ling-chun. "The radioisotope unit radon analysis laboratory and its application to radon mitigation studies /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20897480.

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Gaskin, Janet. "Radon and Lung Cancer." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39003.

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Background: Lung cancer was the fifth leading cause of mortality globally in 2010, and the leading cause of cancer mortality in Canada, representing 26% of all cancer deaths for both men and women in 2017. Radon is a very modifiable environmental exposure that is the second most important cause of lung cancer. Objectives: The objectives of this thesis are to quantify the lung cancer burden associated with residential radon and to identify the most cost effective mitigation options to reduce residential radon in Canada. Methods: The global burden of lung cancer mortality attributable to radon in 2012 was estimated from the 66 countries for which a representative national radon survey was available, using several different models for excess relative risk (ERR) of lung cancer from radon studies. Cost-utility analyses are conducted for 20 practical radon interventions scenarios to reduce residential radon exposures in new and existing housing in Canada, each province/territory and 17 census metropolitan areas. A societal perspective and a lifetime horizon are adopted. A Markov cohort model and a discrete event simulation are used to model residents by household, based on a period-life table analysis, at a discount rate of 1.5%. Results: The estimates of the global median PAR were consistent, ranging from 16.5% to 13.6% for the three ERR models based on miners, and the mean estimates of PAR for Canada ranged from 16.3% to 14.6%. It is very cost effective to install radon preventive measures in new construction compared to no radon control in all regions across Canada. At a radon mitigation threshold of 100 Bq/m3, the sequential analysis recommends the combination of the activation of preventive measures in new housing with the mitigation of existing housing at current testing and mitigation rates for cost effectiveness thresholds between 51,889 and 92,072 $/QALY for Canada, between 27,558 and 85,965 $/QALY for Manitoba, and between 15,801 and 36,547 $/QALY for the Yukon. The discounted ICER for screening and mitigation of existing housing at current rates relative to no radon control measures is 62,451 (66,421) $/QALY using a Markov cohort model (discrete event simulation model) for mitigation of housing above a threshold of 200 Bq/m3, and is 58,866 (59,556) $/QALY using a Markov cohort model (discrete event simulation model) for mitigation of housing above a threshold of 100 Bq/m3. Conclusions: Cost effective residential radon interventions should be implemented across Canada to reduce exposures to this very modifiable cause of lung cancer and to help reduce the increasing lung cancer burden in an ageing Canadian population.
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Goncharov, Fedor. "Transformations de Radon pondérées et leurs applications." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX029/document.

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Cette thèse est consacrée à l'étude des problèmes inverses des transformations de Radon pondérées dans les espaces euclidiens. D'une part, nos études sont motivées par l'application des transformations de Radon pondérées pour différentes tomographies, par exemple en tomographie d'émission (PET, SPECT), en tomographie de fluorescence et en tomographie optique. En particulier, nous développons une nouvelle approche de reconstruction pour les tomographies en 3D, où les données sont modélisées par des transformations des rayons pondérées le long des rayons parallèles à un plan fixe. À cet égard, nos résultats contiennent : des formules pour la réduction des transformées des rayons pondérés en transformées de Radon le long de plans en 3D ; un analogue de la formule d'inversion approximative de Chang et un analogue de l'algorithme d'inversion itératif de type Kunyansky pour les transformations de Radon pondérées en multidimension ; des reconstructions numériques à partir de données simulées et réelles. D'autre part, nos études sont motivées par des problèmes mathématiques liés aux transformations susmentionnées. Plus précisément, nous poursuivons l'étude de l'injectivité et de la non-injectivité des transformations de Radon et des transformations des rayons pondérées en multidimension et construisons une série de contre-exemples à l'injectivité de ces dernières. Ces contre exemples sont intéressants et, dans un certain sens, inattendus parce qu'ils sont proches des cas où ces transformations deviennent injectives. En particulier, par l'une de nos constructions, nous donnons des contre-exemples à des théorèmes d'injectivité bien connus pour les transformations des rayons pondérées (Quinto (1983), Markoe, Quinto (1985), Finch (1986), Ilmavirta (2016)) lorsque les hypothèses de régularité des poids sont légèrement relaxées. Par ce résultat, nous montrons en particulier que les hypothèses de régularité sur les poids sont cruciales pour l'injectivité et qu'il y a une "brisure" de cette dernière si les hypothèses sont légèrement affaiblies
This thesis is devoted to studies of inverse problems for weighted Radon tranforms in euclidean spaces. On one hand, our studies are motivated by applications of weighted Radon transforms in different tomographies, for example, in emission tomographies (PET, SPECT), flourescence tomography and optical tomography. In particular, we develop a new reconstruction approach for tomographies in 3D, where data are modelized by weighted ray transforms along rays parallel to some fixed plane. In this connection our results include: formulas for reduction of the aforementioned weighted ray transforms to weghted Radon transforms along planes in 3D; an analog of Chang approximate inversion formula and an analog of Kunyansky-type iterative inversion algorithm for weighted Radon transforms in multidimensions; numercal reconstructions from simulated and real data. On the other hand, our studies are motivated by mathematical problems related to the aforementioned transforms. More precisely, we continue studies of injectivity and non-injectivity of weighted ray and Radon transforms in multidimensions and we construct a series of counterexamples to injectivity for the latter. These counterexamples are interesting and in some sense unexpected because they are close to the setting when the corresponding weighted ray and Radon transforms become injective. In particular, by one ofour constructions we give counterexamples to well-known injectivity theorems for weighted ray transforms (Quinto (1983), Markoe, Quinto (1985), Finch (1986), Ilmavirta (2016)) when the regularity assumptions on weights are slightly relaxed. By this result we show that, in particular, the regularity assumptions on weights are crucial for the injectivity and there is a breakdown of the latter if the assumptions are slightly relaxed
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Webber, James. "Radon transforms and microlocal analysis in Compton scattering tomography." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/radon-transforms-and-microlocal-analysis-in-compton-scattering-tomography(c1ad3583-01ce-4147-8576-2e635090cb15).html.

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In this thesis we present new ideas and mathematical insights in the field of Compton Scattering Tomography (CST), an X-ray and gamma ray imaging technique which uses Compton scattered data to reconstruct an electron density of the target. This is an area not considered extensively in the literature, with only two dimensional gamma ray (monochromatic source) CST problems being analysed thus far. The analytic treatment of the polychromatic source case is left untouched and while there are three dimensional acquisition geometries in CST which consider the reconstruction of gamma ray source intensities, an explicit three dimensional electron density reconstruction from Compton scatter data is yet to be obtained. Noting this gap in the literature, we aim to make new and significant advancements in CST, in particular in answering the questions of the three dimensional density reconstruction and polychromatic source problem. Specifically we provide novel and conclusive results on the stability and uniqueness properties of two and three dimensional inverse problems in CST through an analysis of a disc transform and a generalized spindle torus transform. In the final chapter of the thesis we give a novel analysis of the stability of a spindle torus transform from a microlocal perspective. The practical application of our inversion methods to fields in X-ray and gamma ray imaging are also assessed through simulation work.
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Hung, Ling-chun, and 孔令臻. "The radioisotope unit radon analysis laboratory and its application toradon mitigation studies." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31220927.

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Breton, Daniel James. "Radionuclide Fluxes in Glaciers and Seasonal Snowpack." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/BretonDJ2004.pdf.

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Johnstone, Maria Magdalena. "Radon remediation : an analysis of dose-reduction, durability and effectiveness." Thesis, University of Northampton, 2002. http://nectar.northampton.ac.uk/2813/.

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Radon is a colourless, odourless, inert, radioactive gas found in Group 8 of the Periodic Table; it is formed by the decay of uranium in soils and rocks. The half-life of radon is 3.8 days. Radon, in the built environment, is the second largest cause of lung cancer after cigarette smoking and is responsible for 3-5% of the UK cancer deaths. Radon can accumulate in workplaces to levels (400 Bq.m3), above which action is required under UK legislation by employers to remediate so as to reduce levels and lower the risk to human health. The remediation and post-remediation research programme in the NI-IS properties in Northamptonshire is perhaps the most mature in the UK, commencing in 1993. This thesis includes a review of the main remediation projects in National Health Service (NHS) properties in Northamptonshire. Data has been obtained from a range of sources, post-remediation, to enable a cost-effectiveness assessment. Using direct radon measurements and questionnaires, to determine occupancy, dose reduction has been calculated for all members of staff in the remediated venues. The reduction in dose is lower than the reduction in radon. The trends in radon levels post-remediation have been investigated night-time levels are reduced more than daytime levels and this has a clear implication for dose to staff The effective lifetime of the remediation systems has been investigated. Remediation systems, operated through a clear management system, have been found to remain effective up to eight years after installation. A Decision Support System to support radon management in the workplace is proposed as well as suggestions for future research
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Kuchling, Peter [Verfasser]. "Analysis and Dynamics on the Cone of Discrete Radon Measures / Peter Kuchling." Bielefeld : Universitätsbibliothek Bielefeld, 2019. http://d-nb.info/1199005193/34.

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Sajja, Mounika. "Correlation between Indoor Radon Concentrations and Hydraulic Fracturing in Ohio." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1494633736877779.

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Hielscher, Ralf. "The Radon transform on the rotation group inversion and application to texture analysis /." Doctoral thesis, [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=985235330.

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Books on the topic "Radon analysis"

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Berenstein, Carlos A., Peter F. Ebenfelt, Simon G. Gindikin, Sigurdur Helgason, and Alexander E. Tumanov. Integral Geometry, Radon Transforms and Complex Analysis. Edited by Enrico Casadio Tarabusi, Massimo A. Picardello, and Giuseppe Zampieri. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/bfb0096088.

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Hartley, J. N. Analysis of radon release from TWCA old-lime solid waste and OAR air pathway exemption. Richland, Wash: Battelle Pacific Northwest Laboratories, 1985.

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Badr, Ishmail. Radon soil gas measurements and their analysis using geostatistical methods: Implications for radon mapping. Birmingham: University of Birmingham, 1994.

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Topological Measures And Weighted Radon Measures. Oxford, UK: Alpha Science International, Ltd, 2008.

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Crawford-Brown, Douglas J. Risk and uncertainty analysis for radon in drinking water: Final report. Denver, CO: The Fund, 1992.

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J, Brenner David. Radon: Risk and remedy. New York: W.H. Freeman, 1989.

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Farkas, Hershel M., Robert C. Gunning, Marvin I. Knopp, and B. A. Taylor, eds. From Fourier Analysis and Number Theory to Radon Transforms and Geometry. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-4075-8.

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International DOE/CEC Residential Radon Epidemiology Workshop (3rd 1995 Baltimore, Md.). Third International DOE/CEC Residential Radon Epidemiology Workshop, February, 1995: Planning meeting combined analysis North America residential radon studies. Washington, D.C: U.S. Department of Energy, 1995.

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Consultants, Kennedy/Jenks. Analysis of costs for radon removal from drinking water systems: Final report. Denver, CO: American Water Works Association, 1992.

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Kinner, Nancy E. Radon removal techniques for small community public water supplies. Cincinnati, OH: U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, 1990.

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Book chapters on the topic "Radon analysis"

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Giaquinta, Mariano, and Giuseppe Modica. "Hausdorff and Radon Measures." In Mathematical Analysis, 339–93. Boston: Birkhäuser Boston, 2011. http://dx.doi.org/10.1007/978-0-8176-8310-8_6.

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Müller, Claus. "The Radon Transform." In Analysis of Spherical Symmetries in Euclidean Spaces, 173–93. New York, NY: Springer New York, 1998. http://dx.doi.org/10.1007/978-1-4612-0581-4_8.

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Helgason, Sigurdur. "Integral geometry and Radon transforms." In Groups and Geometric Analysis, 80–232. Providence, Rhode Island: American Mathematical Society, 2000. http://dx.doi.org/10.1090/surv/083/02.

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Makarov, Boris, and Anatolii Podkorytov. "Charges. The Radon–Nikodym Theorem." In Real Analysis: Measures, Integrals and Applications, 639–69. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5122-7_11.

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Helgason, Sigurdur. "Radon transforms and wave equations." In Integral Geometry, Radon Transforms and Complex Analysis, 99–121. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/bfb0096092.

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Bartolucci, Francesca, Filippo De Mari, and Ernesto De Vito. "Cone-Adapted Shearlets and Radon Transforms." In Applied and Numerical Harmonic Analysis, 59–78. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36138-9_4.

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Sommen, F. "Curved Radon Transforms in Clifford Analysis." In Clifford Algebras and Their Application in Mathematical Physics, 369–81. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5036-1_28.

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Prestini, Elena. "The Radon Transform and Computerized Tomography." In The Evolution of Applied Harmonic Analysis, 181–98. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4899-7989-6_7.

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Prestini, Elena. "The Radon Transform and Computerized Tomography." In The Evolution of Applied Harmonic Analysis, 215–36. Boston, MA: Birkhäuser Boston, 2004. http://dx.doi.org/10.1007/978-0-8176-8140-1_7.

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van Ginkel, M., M. A. Kraaijveld, L. J. van Vliet, E. P. Reding, P. W. Verbeek, and H. J. Lammers. "Robust Curve Detection Using a Radon Transform in Orientation Space." In Image Analysis, 125–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/3-540-45103-x_18.

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Conference papers on the topic "Radon analysis"

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De Novellis, S., A. Pasculli, and S. Palermi. "Innovative modeling methodology for mapping of radon potential based on local relationships between indoor radon measurements and environmental geology factors." In RISK ANALYSIS 2014. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/risk140101.

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Santosh, K. C. "Character Recognition Based on DTW-Radon." In 2011 International Conference on Document Analysis and Recognition (ICDAR). IEEE, 2011. http://dx.doi.org/10.1109/icdar.2011.61.

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Wang, Jiaxin, Guohua Wu, Liguo Zhang, Jingyuan Qu, and Jiejuan Tong. "Diffusion Law and Simulation Analysis of Radon in Uranium Tailings Based on Multiple Gauss Plume Model." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81189.

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The radon from uranium tailings spreads fast and has a wide range of pollution, which poses a potential radiation hazard to the environment and the public in downwind region. In this paper, the open and naked uranium tailings are selected as research object. By setting up multiple Gaussian plume models with single point source, the diffusion of radon in the uranium tailings is simulated with different atmospheric stability, average wind speed, height and downwind distance. The results show that the maximum radon concentration increases while the related downwind distance decreases as the atmospheric becoming stable. The higher wind speed does not affect the downwind distance where the maximum radon concentration occurs, but it decreases the maximum radon concentration. The concentration of radon in residential area decreases but the decreasing rate speeds up with height going up. The distribution of radon in vertical and horizontal direction tends to be homogeneous while the near-surface area concentration decreases rapidly as farther downwind distance.
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Venkatraghavan, Vikram, Smruti Rekha, Jyotirmoy Chatterjee, and Ajoy K. Ray. "Modified Radon transform for texture analysis." In 2011 Annual IEEE India Conference (INDICON). IEEE, 2011. http://dx.doi.org/10.1109/indcon.2011.6139393.

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Jiang, Fuliang, Wenchao Yang, Ming Li, Xiangyang Li, and Changshou Hong. "Noise Reduction Treatment and Analysis of Accumulated Radon Concentration in Uranium-Like Rock Based on Wavelet Theory." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81068.

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Based on the principle of similarity, uranium ore samples were prepared from raw materials such as uranium tailings, quartz sand and refined iron powder, and then the samples were treated with different packages for measuring the sample accumulated radon concentration. In the actual measurement process, due to the characteristics of radionuclide decay, instrument reasons and human factors, the data will be a certain deviation. Therefore, the method of wavelet analysis is used to denoise the accumulated radon concentration and obtain radon exhalation rate. The results of the study show: the correlation coefficient of cumulative radon concentration fitted by wavelet denoising is improved greatly, and all of them are above 0.99, the recalculated radon exhalation rate of the single side of the sample is decreased by 0.06Bq · m−2 · s−1, and double-edged is decreased by 0.02Bq · m−2 · s−1. The experiment proved that wavelet theory can be used to correct calculated value of radon exhalation rate of uranium-like rock. At the same time, it provides a new method for further study of uranium mine radiation protection parameters.
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Alieva, Tatiana, and Martin J. Bastiaans. "Radon-Wigner transform for optical field analysis." In Selected Papers from the International Conference on Optics and Optoelectronics, edited by Kehar Singh, Om P. Nijhawan, Arun K. Gupta, and A. K. Musla. SPIE, 1999. http://dx.doi.org/10.1117/12.346772.

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Marušiaková, Miriam, Jǐrí Hůlka, Theodore E. Simos, George Psihoyios, and Ch Tsitouras. "Problems with Estimating Annual Mean Indoor Radon Concentrations." In ICNAAM 2010: International Conference of Numerical Analysis and Applied Mathematics 2010. AIP, 2010. http://dx.doi.org/10.1063/1.3498284.

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Jian-xiong Dong, P. Dominique, A. Krzyyzak, and C. Y. Suen. "Cursive word skew/slant corrections based on Radon transform." In Eighth International Conference on Document Analysis and Recognition (ICDAR'05). IEEE, 2005. http://dx.doi.org/10.1109/icdar.2005.82.

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Vissinga, M., and J. T. Fokkema. "Complexity analysis in the double transformed radon domain." In 53rd EAEG Meeting. European Association of Geoscientists & Engineers, 1991. http://dx.doi.org/10.3997/2214-4609.201411027.

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Burnett, William, and Sergey Fomel. "A Gaussian beam analysis of the Radon transform." In SEG Technical Program Expanded Abstracts 2008. Society of Exploration Geophysicists, 2008. http://dx.doi.org/10.1190/1.3063967.

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Reports on the topic "Radon analysis"

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Lacour, Ronald J. Radon Transform Analysis of a Probabilistic Method for Image Generation. Fort Belvoir, VA: Defense Technical Information Center, May 1990. http://dx.doi.org/10.21236/ada222203.

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Chen, C., and D. M. Thomas. Analysis of volatile phase transport in soils using natural radon gas as a tracer. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/10138572.

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Chen, C., and D. M. Thomas. Analysis of volatile phase transport in soils using natural radon gas as a tracer. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/6888371.

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Wilhite, E. L. Reevaluation of the Inadvertent Intruder, Groundwater, Air, and Radon Analyses for the Saltsone Disposal Facility. Office of Scientific and Technical Information (OSTI), January 2003. http://dx.doi.org/10.2172/807127.

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Nash, A. L., J. E. Athey, and M. D. Hendricks. Geographic distribution for a quarter of a century of radon analyses (presentation): Esri User Conference, San Diego, California, July 10–14, 2017. Alaska Division of Geological & Geophysical Surveys, July 2017. http://dx.doi.org/10.14509/29846.

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Scholz, Florian. Sedimentary fluxes of trace metals, radioisotopes and greenhouse gases in the southwestern Baltic Sea Cruise No. AL543, 23.08.2020 – 28.08.2020, Kiel – Kiel - SEDITRACE. GEOMAR Helmholtz Centre for Ocean Research Kiel, November 2020. http://dx.doi.org/10.3289/cr_al543.

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R/V Alkor Cruise AL543 was planned as a six-day cruise with a program of water column and sediment sampling in Kiel Bight and the western Baltic Sea. Due to restrictions related to the Covid-19 pandemic, the original plan had to be changed and the cruise was realized as six oneday cruises with sampling in Kiel Bight exclusively. The first day was dedicated to water column and sediment sampling for radionuclide analyses at Boknis Eck and Mittelgrund in Eckernförde Bay. On the remaining five days, water column, bottom water, sediment and pore water samples were collected at eleven stations covering different types of seafloor environment (grain size, redox conditions) in western Kiel Bight. The data and samples obtained on cruise AL543 will be used to investigate (i) the sedimentary cycling of bio-essential metals (e.g., nickel, zinc, and their isotopes) as a function of variable redox conditions, (ii) the impact of submarine groundwater discharge and diffusive benthic fluxes on the distribution of radium and radon as well as greenhouse gases (methane and nitrous oxide) in the water column, and (iii) to characterize and quantify the impact of coastal erosion on sedimentary iron, phosphorus and rare earth element cycling in Kiel Bight.
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[Analysis of DNA damage and mutations induced by radon daughter products]. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/6750970.

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[Analysis of DNA damage and mutations induced by radon daughter products]. [Final report]. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/10124138.

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