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Artykuły w czasopismach na temat "Captur of gaseous radionuclides":
Stewart, A., A. Brudenell i C. D. Collins. "Deposition of gaseous radionuclides to fruit". Journal of Environmental Radioactivity 52, nr 2-3 (styczeń 2001): 175–89. http://dx.doi.org/10.1016/s0265-931x(00)00032-1.
Collins, C. D., i G. Shaw. "Modelling the fate of gaseous radionuclides in crops". Radioprotection 37, nr C1 (luty 2002): C1–43—C1–48. http://dx.doi.org/10.1051/radiopro/2002083.
Chung, C., i C. H. Tsai. "Rapid Monitoring of Gaseous Radionuclides Using a Portable Spectrometer". Radiation Protection Dosimetry 61, nr 1-3 (1.08.1995): 137–40. http://dx.doi.org/10.1093/oxfordjournals.rpd.a082769.
Chung, C., i C. H. Tsai. "Rapid Monitoring of Gaseous Radionuclides Using a Portable Spectrometer". Radiation Protection Dosimetry 61, nr 1-3 (1.08.1995): 137–40. http://dx.doi.org/10.1093/rpd/61.1-3.137.
Johnson, Chelsea, Nandini G, Santosh K. Balivada i Surya Prakash. "Radioactive Waste Management in a Medical Cyclotron Facility - A Review". International Journal of Health Technology and Innovation 1, nr 03 (23.12.2022): 20–23. http://dx.doi.org/10.60142/ijhti.v1i03.53.
Andrews, Hunter B., Praveen K. Thallapally i Alexander J. Robinson. "Monitoring Xenon Capture in a Metal Organic Framework Using Laser-Induced Breakdown Spectroscopy". Micromachines 14, nr 1 (29.12.2022): 82. http://dx.doi.org/10.3390/mi14010082.
Barbin, Nikolay M., Stanislav A. Titov, Dmitry I. Terentiev i Anton M. Kobelev. "Computer simulation of thermal processes involving Sr and Ca radionuclides in the process of heating radioactive graphite in an air atmosphere". Nuclear Energy and Technology 9, nr 4 (19.12.2023): 273–79. http://dx.doi.org/10.3897/nucet.9.116661.
Quérel, A., P. Lemaitre, M. Monier, E. Porcheron, A. I. Flossmann i M. Hervo. "An experiment to measure raindrop collection efficiencies: influence of rear capture". Atmospheric Measurement Techniques 7, nr 5 (19.05.2014): 1321–30. http://dx.doi.org/10.5194/amt-7-1321-2014.
张, 志远. "Calculation of the Radionuclides Concentration in Gaseous Effluents from Yangjiang Nuclear Power Plant". Nuclear Science and Technology 04, nr 03 (2016): 78–87. http://dx.doi.org/10.12677/nst.2016.43010.
Kuzin, R., S. N. Brykin i T. Tairov. "SOURCES OF RADIOACTIVE WASTE IN LEACH PLANTS PROCESSING URANIUM ORES". Fine Chemical Technologies 11, nr 5 (28.10.2016): 21–25. http://dx.doi.org/10.32362/2410-6593-2016-11-5-21-25.
Rozprawy doktorskie na temat "Captur of gaseous radionuclides":
Leloire, Maëva. "Utilisation de matériaux poreux de type Metal-Organic Framework (MOF) pour l’adsorption de molécules gazeuses (I2, RuO4) dans le contexte d’un accident de réacteur nucléaire". Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR009.
The radiotoxic isotopes of iodine and ruthenium, such as 129I, 131I, 103Ru and 106Ru, are produced in significant quantities during nuclear fission. After a nuclear accident, these elements can be rapidly disseminated in the environment, in the form of highly volatile species such as molecular iodine (I2) or ruthenium tetroxide (RuO4). In order to limit the dispersion of these fission products, in case of a nuclear accident, filters composed by porous materials (zeolites or activated carbon) can be used. However, such porous solids have limitations during a nuclear accident. Indeed, the presence of poisonous species (for example NOx, H2O, COx) can ihhibit the capture of radiotoxic species. In addition, their relatively low porosity is often not suitable for the good trapping of large species such as RuO4. Based on these limitations, a recent class of porous materials called Metal-Organic Frameworks (MOFs) could be an effective substitute. Indeed, MOFs are hybrid materials, composed of inorganic clusters linked to each other by organic ligands. This low-density organization allows high porosity and high specific surface areas (up to 7000 m2.g-1), significantly higher than those of the usual porous solids. Although MOFs have already shown good capacities for capturing radioactive species, very little data exist on their effectiveness for trapping gaseous species (especially RuO4) and under accident conditions.In order to strengthen our knowledge of MOFs for potential use in nuclear safety, this thesis work focused on the effectiveness of some model MOFs for the capture of volatile I2 and RuO4 under accident conditions. We have highlighted the importance of the organic linker functionalization and confinement of iodine in the porous matrix. Thus, iodine creates a strong interaction with the framework of MOFs to form other iodine species of type Ix-. This transformation was notably analyzed by RAMAN spectroscopy.Following this first study, we selected the compound UiO-66_NH2 as reference filtration material to be tested in an IRSN facility called EPICUR. This one allows the manipulation of radioactive iodine (isotope-131) and the study of the confinement of iodine in within the porous framework in accidental conditions (radiation, temperature, steam). This work needs, upstream, to develop a shaping process in order to produce a MOF material with a spherical millimeter particle size. In parallel, an investigation on the resistance of this material under gamma irradiation was also undertaken in IRMA facility at IRSN. This study confirmed the excellent capacity of the solid UiO-66_NH2 in the present context. Finally, UiO-66_NH2 was also the candidate of choice for the capture of gaseous RuO4. The various analyzes (TEM, NMR) made it possible to quantify the RuO4 within the pores and to propose reaction mechanisms explaining its very good capture in UiO-66_NH2
Tsai, Chin-Hsien, i 蔡親賢. "The rapid, in situ monitoring of dispersed gaseous radionuclides in confined space". Thesis, 1993. http://ndltd.ncl.edu.tw/handle/07825080188885056569.
國立清華大學
原子科學研究所
81
The purpose of this study is to examine the applicabi- lity of real-time monitoring of gaseous radionuclide with a high- purity germanium (HPGe) detector. In the case of normal operations, continuous release of gaseous radio- nuclides of tracer amount of isotopes of Ar,Kr and Xe from reactor is found. The system, consisted of portable HPGe and multichannel analyzer (MCA), is designed for the measurement both in sealed chamber and in outdoors sur- rounded with gaseous radionuclide. Besides, quantitative, qualitative, prompt and on-line measurement can be reached with the movable detectors without air sucking pump and filter paper. The research was divided into two major parts as follows : (1) The HPGe detector was calibrated by using of artificial gaseous Ar-41,Kr-85m and Xe-125,133,135 releas- ed to a sealed chamber. Minimum detectable concentration and possible application field monitoring are discussed. (2) Three various types of HPGe detectors were calibrated , the relationship between detectors' efficiency and the crystal volume was observed. The results show : (1)linear relationship between eff- iciency and energy in log coordinate can be obtained. The detector system is available for the measurement of minimum detectable concentration (MDC) far less than legal maximum permissible concentration (MPC), application to detect the gaseous radionuclide of nuclear disaster and nuclear war.(2) There exists a linear relationship between crystal volume and relative efficiency so that the inter- relation between efficiencys with various detectors can be developed in emergenecy.
Lin, Chang Shen, i 林昶伸. "The Real-time,Quantitative,Qualitative monitoring of Gaseous Radionuclides Nearby Nuclear Facility". Thesis, 1997. http://ndltd.ncl.edu.tw/handle/68035083910465063232.
國立清華大學
原子科學系
85
In the case of normal operations, continuous release of gaseous radionuclides of trace amount of isotopes of Ar, Kr and Xe form reactor is found. The purpose of this study is to examine the applicability of real- time monitoring of gaseous radionuclides with a high-purity germanium detector (HPGe). The system, consisted of portable HPGe and multichannel analyzer (MCA), is designed for the measured both in sealed chamber and in outdoors surrounded with gaseous radionuclides. Besides, quantitative, qualitative, prompt and on-line measurement can be reached with the portable detectors without air sucking pump and filter paper. The research was divided into two major parts as follows : (1) The HPGe detector was calibrated using artificial gaseous Ar-41 and Xe- 125,133,135 released to a sealed chamber. The efficiency in both sealed chamber and outdoors are formulated from the calibrated volumetric sealed chamber. (2) We can obtain the effective dose equivalent of the gaseous radionuclides using dose rate conversion factors. Detection limit and possible application in field monitoring are discussed. The results show : (1) linear relationship between efficiency and energy in log coordinate be obtained, the detector system is available for measurement of detection limit (DL) far less than legal derived air concentration (DAC), application can be applied to detect the gaseous radionuclides in nuclear accident and nuclear war. (2) The dose rate formulated from the counting rate can provide the rapid information for personal protection and post accident assessment.
Streszczenia konferencji na temat "Captur of gaseous radionuclides":
Ou, Pingwen, Yongzheng Chen, Dongyu He i Peng Chen. "Sensitivity Analysis on Key Parameters of Severe Accident Source Term of PWR". W 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-91730.
Lawson, Yvonne, Christopher M. Brookes, Carl J. Steele i Mark J. Sarsfield. "Understanding Potential Release Mechanisms of Volatile Ruthenium During the Vitrification of High Level Waste". W ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16288.
Dunzik-Gougar, Mary Lou, Francis van Ravenswaay, Leszek Kuczynski i Johan M. F. Slabber. "Microbial Treatment of Irradiated Graphite for Separation of Radioisotope 14C From Bulk Graphite 12C". W Fourth International Topical Meeting on High Temperature Reactor Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/htr2008-58119.
Li, Wenfeng, Chelsea W. Neil, Philip H. Stauffer, J. William Carey, Meng Meng i Luke P. Frash. "Characterization of Gas Transport in Fractured Rocks for Underground Nuclear Explosion Detection". W 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0308.
Vines, Sarah, i David Lever. "An Integrated Approach to Geological Disposal of UK Wastes Containing Carbon-14". W ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96342.