Results 161 to 170 of about 17,955 (212)
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Characterisation of the TAPIRO BNCT epithermal facility
Radiation Protection Dosimetry, 2004A collimated epithermal beam for boron neutron capture therapy (BNCT) research has been designed and built at the TAPIRO fast research reactor. A complete experimental characterisation of the radiation field in the irradiation chamber has been performed, to verify agreement with IAEA requirements.
K. W. Burn +6 more
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Mineralium Deposita, 2015
Many active volcanic-hydrothermal and geothermal systems are characterized by distinctive surface and near-surface landforms and products, which are generated during discharge of a spectrum of fluid types under varied conditions. Remnants of most of these products are preserved in some of their less-eroded, extinct equivalents: epithermal deposits of ...
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Many active volcanic-hydrothermal and geothermal systems are characterized by distinctive surface and near-surface landforms and products, which are generated during discharge of a spectrum of fluid types under varied conditions. Remnants of most of these products are preserved in some of their less-eroded, extinct equivalents: epithermal deposits of ...
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1999
Abstract Epithermal ore deposits form in the shallow portions of hydrothermal systems, from the surface to less than about 1-km depth. The hydrothermal activity is associated with contemporaneous volcanism and related magma intrusions, and the ore is hosted typically by volcanic rocks.
Jeffrey W. Hedenquist, Antonio Arribas
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Abstract Epithermal ore deposits form in the shallow portions of hydrothermal systems, from the surface to less than about 1-km depth. The hydrothermal activity is associated with contemporaneous volcanism and related magma intrusions, and the ore is hosted typically by volcanic rocks.
Jeffrey W. Hedenquist, Antonio Arribas
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Epithermal ageing mechanism of gussasphalt
Journal of Wuhan University of Technology-Mater. Sci. Ed., 2009The normal asphalt index test, DSR test, FTIR and the GPC distribution analysis of molecular weight on the extraction and recovery of asphalt of the gussasphalt, SMA extraction and recovery of asphalt and the rotary-thin-film-oven-aged asphalt above 240 °C were introduced. The results indicate the rutting factor and fatigue factor of the extraction and
Zengheng Hao +3 more
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Characterization of an epithermal irradiation facility
Journal of Radioanalytical and Nuclear Chemistry Articles, 1987An epithermal energy neutron irradiation facility has been used to perform instrumental activation analysis for iodine, silicon, nickel, zirconium, uranium and thorium. The facility, which is adjacent to the fuel of the University of Virginia 2.0 MW pool reactor, consists of a dry sample region surrounded by a fixed cadmium shield.
T. G. Williamson +4 more
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Activation by Epithermal Neutrons
1964The considerations begun in Chapter 11 will now be extended to the practically important case in which the neutron field contains both thermal and epithermal neutrons. The very same activity that can be excited by absorption of thermal neutrons in the probe substance can also be excited by absorption of epithermal neutrons, and it is necessary to ...
K. H. Beckurts, K. Wirtz
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2019
In Europe and Middle East, Turkey is currently positioned as the largest producer of gold with a 2015 production of 27.5 t from predominantly porphyry and epithermal deposits. Although exploration for gold by advanced geochemical methods started in 1980s, Turkey entered into hard-rock mining based on cyanide process for extracting gold from low-grade ...
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In Europe and Middle East, Turkey is currently positioned as the largest producer of gold with a 2015 production of 27.5 t from predominantly porphyry and epithermal deposits. Although exploration for gold by advanced geochemical methods started in 1980s, Turkey entered into hard-rock mining based on cyanide process for extracting gold from low-grade ...
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Epithermal absorption in an isolated resonance
Journal of Nuclear Energy, 1968Abstract A method of calculating neutron resonance absorptions and flux spectra at epithermal energies in heterogeneous cells is described. The integral transport equation is solved in the multigroup multiregion approach, following the first flight collision probability technique.
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Epithermal neutron activation analysis
Journal of Radioanalytical and Nuclear Chemistry Articles, 1985Different modes of epithermal neutron activation analysis are described. The principles and examples are given for each.
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Observation of epithermal 2S muonium
Hyperfine Interactions, 1984A slow muon beam was passed through a thin aluminium foil and the emerging beam was studied for the presence of muonium in the 2S state. The fraction and the velocity distribution of the 2S muonium was determined.
C. A. Fry +9 more
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