2,415 research outputs found
Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites
We present here the results of our analysis of X-ray properties of Seyfert 2
galaxy NGC 3281, based on the observational data obtained by XMM-Newton and
INTEGRAL within the energy ranges 0.2-12 keV and 20-150 keV, respectively. The
XMM-Newton spectrum of this object is presented for the first time. We show
that fitting the X-ray spectrum of this galaxy with models based on the
reflection from the disc with infinite column density yields non-physical
results. More appropriate fit takes into account both transmitted and reflected
emission, passed through a gas-dusty torus-like structure. Keeping this in
mind, to model the inhomogeneous clumpy torus, we used the MYTorus model.
Hence, we propose that the torus of NGC 3281 is not continuous structure, but
it consists of separate clouds, which is in a good agreement with the results
of near-IR observations. Using this assumption, we found that the torus
inclination angle and the hydrogen column density are 66.98^{+2.63}_{-1.34}
degrees and 2.08^{+0.35}_{-0.18}x10^{24} cm^{-2}, respectively. Also, the
emission of the hot diffuse gas with temperature ~590 eV and warm absorption
were detected.Comment: 8 pages, 5 figures, 2 tables, accepted for publication in Advances in
Astronomy and Space Physic
Synthesis of pyromellitic acid esters
The ester acids necessary for studyng the thermochemical properties of pyromellitic acid (PMK)-based peroxides were investigated. Obtaining a tetramethyl ester of a PMK was described. The mechanism of an esterification reaction is discussed, as is the complete esterification of PMK with primary alcohol
The role of elective courses in training students оf preventive medicine faculty
By the example of professional training of students of medical-prophylactic faculty the role of disciplines at the choice was substantiated in the organization of educational process at medical high schoolНа примере профессиональной подготовки студентов медико-профилактического факультета обоснована роль дисциплин по выбору в организации образовательного процесса в медицинском вуз
Neuropsychological approach to the diagnosis and prevention of deviant behavior
The article is concerned with the main issues of the prevention system of deviant behavior among adolescents in Russia. The necessity of studying the nature of deviant behavior in order to optimize preventive measures is also substantiated. The article gives the description of the results of the study of some neuropsychological pre-requisites found in the functional 10symmetry manifestation, with personality attributes, including the temporal perspective specialities as an indicator of personal maturity / immaturit
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