Výsledky vyhledávání - "Yu. P. Dobrynin"

Akademický článek

Soil moisture loss reduction owing to evaporation

Autor: Yu. A. Savel’ev, O. N. Kuharev, N. P. Larjushin, P. A. Ishkin, Yu. M. Dobrynin

Publikováno v: Сельскохозяйственные машины и технологии, Vol 12, Iss 1, Pp 42-47 (2018)

Soil-climatic conditions of arid regions of Russia have a great potential for obtaining high yields of various crops, but the constant lack of soil moisture hampers the increase in production volumes. However, the deficiency of soil moisture is due n

Externí odkaz: https://doaj.org/article/3ef6d01b87304558a0200cfdf0de8120

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Akademický článek

Theoretical study of soil water balance and process of soil moisture evaporation

Autor: Yu. A. Savel'ev, Yu. M. Dobrynin, P. A. Ishkin

Publikováno v: Сельскохозяйственные машины и технологии, Vol 0, Iss 1, Pp 23-28 (2017)

Nearly a half of all grain production in the Russian Federation is grown in dry regions. But crop production efficiency there depends on amount of moisture, available to plants. However deficit of soil moisture is caused not only by a lack of an atmo

Externí odkaz: https://doaj.org/article/5d332de6a795450ea2d936212888e1f3

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Number of neutrons emitted by individual fission fragments of U235

Autor: V.P. Zakharova, V.F. Apalin, L.A. Mikaelyan, Yu. P. Dobrynin, I.E. Kutikov

Publikováno v: The Soviet Journal of Atomic Energy. 8:10-16

A large detector filled with a liquid organic scintillator containing cadmium has been used to measure the number of neutrons emitted by individual fragments in U235 fission by thermal neutrons. Using 4 π geometry the dependence of the number of neu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1b459e2dd2fd3d2516e83a6151bc6428
https://doi.org/10.1007/bf01491225

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Determination of the average number of neutrons ?eff emitted in a single capture event by the isotopes U233, U235 and Pu239 in the superthermal region of neutron energies

Autor: I.E. Kutikov, V. N. Lavrenchik, G. A. Dorofeev, B. G. Erozolimsky, Yu. P. Dobrynin, P.E. Spivak

Publikováno v: The Soviet Journal of Atomic Energy. 1:295-302

The variation of νeff for the isotopes U233, U235 and Pu239 is measured in the superthermal region of neutron energies. For U233 νeff remains constant up to an energy of the order of 100 ev. For Pu239 νeff drops by 12% on going from the thermal sp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa8faa061e94e8e81a77e7d82ea68edd
https://doi.org/10.1007/bf01514492

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Measurement of the average number ?eff of neutrons emitted per single capture event for samples of Pu239 with impurities of the isotope Pu240 and the effective resonance capture integral of Pu240

Autor: I. Ē. Kutikov, Yu. P. Dobrynin, M. I. Pevzner, L. S. Danelian, S. S. Moskalev, B. G. Erozolimsky

Publikováno v: The Soviet Journal of Atomic Energy. 1:311-315

In this article we present the results of measurement of νeff in Fermi spectra with lower bounds of 0.15 ev (gadolinium filter) and 0.4 ev (cadmium filter) for samples of Pu239 with various concentrations of impurities of the isotope Pu240 (0% 1.6%,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::476e30379e3a8be2e433061f8336108d
https://doi.org/10.1007/bf01514494

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The average number of neutrons ?eff emitted by the isotopes U233, U235 and Pu239 on capture of neutrons with energies from 30 to 900 key

Autor: P.E. Spivak, Yu. P. Dobrynin, G. A. Dorofeev, I.E. Kutikov, B. G. Erozolimsky, V. N. Lavrenchik

Publikováno v: The Soviet Journal of Atomic Energy. 1:303-309

Measurements are taken on νeff for the isotopes U233, U235 and Pu239 for neutrons with energies from 30 to 900 kev. It is discovered that in this energy region νeff increases substantially as the neutron energy increases.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58202fd0e3b803300bf3231d015ea402
https://doi.org/10.1007/bf01514493

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Effective cross sections for fission of U233, U235, Pu239 and Pu240 by neutrons with energies from 30 kev to 5 Mev

Autor: Yu. P. Dobrynin, G. A. Dorofeev

Publikováno v: The Soviet Journal of Atomic Energy. 2:9-16

Measurements have been made of the absolute values of the effective fission cross sections in U233, U235, Pu239 and Pu240, using as photoneutron sources Sb + Be (∼ 30 kev), Na + D2O (∼ 250 kev), Na + Be (∼ 900 kev), a source with a simulated fi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e97362788c2eb7ed1a0923edde68eed
https://doi.org/10.1007/bf01480700

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