Autor: Kobets, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Doslidzhenniavplivu parametriv rotornykh robotsykh organiv na yakisni pokaznyky roboty rozkydachiv mineralnykh dobryv
Research of influence of parameters of rotor workings organs in on high-quality indexes of work of throwing about of mineral fertilizers
Autorzy:: Kobets, A.
Nagiieva, N.
Powiązania:: https://bibliotekanauki.pl/articles/77913.pdf
Data publikacji:: 2011
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Źródło:: Motrol. Motoryzacja i Energetyka Rolnictwa; 2011, 13 C
1730-8658
Pojawia się w:: Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Studies of stainless steel exposed to sandblasting
Autorzy:: Horodek, P.
Eseev, M. K.
Kobets, A. G.
Powiązania:: https://bibliotekanauki.pl/articles/147075.pdf
Data publikacji:: 2015
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: stainless steel
sandblasting
defects
positron beam
Opis:: The influence of sandblasting on surface and subsurface of stainless steel is investigated using variable energy positron beam (VEP), positron annihilation spectroscopy (PAS), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Samples of stainless steel were blasted using 110 μm particles of Al2O3 under different pressure and time duration. In the case of sandblasting for 90 s, the reduction of positron diffusion length depending on the applied pressure was observed. Sandblasting during 30 s leads only to the reduction of positron diffusion length to about 60 nm for all samples. Positron lifetimes close to 170 ps measured using positrons emitted directly from the source point to the presence of vacancies on the dislocation lines. SEM and AFM images show that surface roughness depends rather on pressure of sandblasting than time of exposition.
Źródło:: Nukleonika; 2015, 60, No. 4, part 1; 721-724
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Slow positron beam at the JINR, Dubna
Autorzy:: Horodek, P.
Kobets, A. G.
Meshkov, I. N.
Sidorin, A. A.
Orlov, O. S.
Powiązania:: https://bibliotekanauki.pl/articles/147134.pdf
Data publikacji:: 2015
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: positron beam
positron injector
Opis:: The Low Energy Positron Toroidal Accumulator (LEPTA) at the Joint Institute for Nuclear Research (JINR) proposed for generation of positronium in flight has been adopted for positron annihilation spectroscopy (PAS). The positron injector generates continuous slow positron beam with positron energy range between 50 eV and 35 keV. The radioactive 22Na isotope is used. In distinction to popular tungsten foil, here the solid neon is used as moderator. It allows to obtain the beam intensity of about 105 e+/s width energy spectrum characterized by full width at half maximum (FWHM) of 3.4 eV and a tail to lower energies of about 30 eV. The paper covers the characteristic of variable energy positron beam at the LEPTA facility: parameters, the rule of moderation, scheme of injector, and transportation of positrons into the sample chamber. Recent status of the project and its development in the field of PAS is discussed. As an example, the measurement of the positron diffusion length in pure iron is demonstrated.
Źródło:: Nukleonika; 2015, 60, No. 4, part 1; 725-728
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Slow Positron Beam Studies of the Stainless Steel Surface Exposed to Sandblasting
Autorzy:: Horodek, P.
Dryzek, J.
Kobets, A.
Kulik, M.
Lokhmatov, V.
Meshkov, I.
Orlov, O.
Pavlov, V.
Rudakov, A.
Sidorin, A.
Siemek, K.
Powiązania:: https://bibliotekanauki.pl/articles/1336525.pdf
Data publikacji:: 2014-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.70.Bj
82.80.Yc
61.82.Bg
Opis:: The paper presents slow positron beam studies of the stainless steel grade 304 AISI samples annealed in the flow $N_2$ atmosphere and sandblasted under different pressure from 1 to 7 bar. Heating of specimens caused formation of an additional layer on the surface which can be identified as oxides. Sandblasting reduces the thickness of the oxide layer and also defects concentration (vacancies as we suppose) decreases in dependence on pressure applied during blasting. Additionally, the atomic concentrations of oxygen have been obtained using nuclear methods (Rutherford backscattering and nuclear reactions) in the near surface layers of the studied samples.
Źródło:: Acta Physica Polonica A; 2014, 125, 3; 714-717
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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