Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Yu. M. Tsipenyuk"'
Autor:
A. L. Kersin, Yu. M. Tsipenyuk, V. I. Firsov, Marie Claire Cantone, B. Candoni, Ivan Veronese, Augusto Giussani
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 271:559-563
Information on the biokinetics of cerium can be obtained directly from humans by using stable isotopes as tracers. Neutron, photon and proton activation analysis have all been tested as analytical techniques able to quantify different isotopes of the
Autor:
V. P. Kolotov, N. N. Dogadkin, Yu. M. Tsipenyuk, A. Yu. Andriyanov, S. N. Shilobreeva, B. A. Chapyzhnikov, V. I. Korobkov
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 271:671-678
It has been shown that gamma-activation significantly extends possibilities of activation autoradiography with respect to determination of platinum group elements (PGE) in silicate samples. All PGE may be activated by bremsstrahlung with forming radi
Autor:
Yu. M. Tsipenyuk
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 271:107-114
The results of applying photoactivation for express nondestructive multicomponent analysis of apatite-nepheline, gold-bearing, polymetal and lapparite ores are presented. The experiments were carried out at the IPP microtron with bremsstrahlung of 10
Publikováno v:
Journal of Analytical Chemistry. 60:45-48
The volume concentration of carbon and nitrogen in different meteorites was determined by gamma-ray activation analysis on a microtron. The 11C and 13N radionuclides forming in photoneutron reactions were isolated by high-temperature extraction; thei
Publikováno v:
Low Temperature Physics. 39:777-779
Experiments on small-angle scattering of neutrons on liquid helium at temperatures of 1.0–5 K at the ISIS pulsed neutron source (England) are reported. Detailed measurements of the angular distribution of the scattered neutrons reveal a significant
Autor:
Yu. M. Tsipenyuk, V. I. Korobkov, V. P. Kolotov, B. A. Chapyzhnikov, A. Yu. Andriyanov, N. N. Dogadkin, S. N. Shilobreeva
Publikováno v:
Journal of Analytical Chemistry. 58:882-886
The potential of the gamma activation determination of platinum-group elements and gold both by instrumental gamma activation analysis (bulk analysis) and by monitoring their distribution using autoradiography (local analysis) is studied. It is shown
Autor:
Yu. M. Tsipenyuk, A. V. Gorbunov, D. De Bartolo, Marie Claire Cantone, Augusto Giussani, V. I. Firsov, E. Cornolti
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 243:707-714
The biokinetics of radioactive substances can be studied using stable tracers. For the highly radiotoxic actinides, for which no stable isotopes are available as tracers, the use of stable isotopes of lanthanides as chemically related surrogates has
Autor:
Yu. M. Tsipenyuk
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 244:479-483
Nondestructive photoactivation analysis for stoichiometry of Nb-Ge and Zr-Nb alloys, diluted antiferromagnets Mn x Zn1-x F2 and CsNi1-x F2 and CsNi1-x Mg x Br3, and high-temperature superconductors LaSrCuO has been developed at a 30 MeV microtron. It
Autor:
B. A. Chapyzhnikov, Yu. M. Tsipenyuk
Publikováno v:
Czechoslovak Journal of Physics. 49:479-482
Special fast procedure for radiochemical extraction of carbon impurities from boron samples was developed. The procedure consists of alloying the sample in a mixture of KNO3+KOH at 600°C, dissolving of the cooled melt in water, and subsequent distil
Autor:
K. E. Kamentsev, Yu. M. Tsipenyuk
Publikováno v:
Europhysics Letters (EPL). 43:585-590
Anomalous decrease of the amplitude of Bi 2212 single-crystal vibrations in magnetic field is observed, indicating the existence of strong damping in vortex matter in the region of 3D-2D crossover. This phenomenon occurs in the temperature region 5