104 research outputs found
The radial Tully-Fisher relation for spiral galaxies - I
We find a new Tully-Fisher-like relation for spiral galaxies holding at different galactocentric radii. This radial Tully-Fisher relation allows us to investigate the distribution of matter in the optical regions of spiral galaxies. This relation, applied to three different samples of rotation curves of spiral galaxies, directly proves that: (i) the rotation velocity of spirals is a good measure of their gravitational potential and both the rotation curve's amplitudes and profiles are well predicted by galaxy luminosity, (ii) the existence of a dark component, less concentrated than the luminous one, and (iii) a scaling law, according to which, inside the disc optical size: M-dark/M-lum = 0.5(L-B/10(11) L-B circle dot)(-0.7)
The Universal Rotation Curve of Spiral Galaxies. II The Dark Matter Distribution out to the Virial Radius
In the current LambdaCDM cosmological scenario, N-body simulations provide us
with a Universal mass profile, and consequently a Universal equilibrium
circular velocity of the virialized objects, as galaxies. In this paper we
obtain, by combining kinematical data of their inner regions with global
observational properties, the Universal Rotation Curve (URC) of disk galaxies
and the corresponding mass distribution out to their virial radius. This curve
extends the results of Paper I, concerning the inner luminous regions of Sb-Im
spirals, out to the edge of the galaxy halos.Comment: In press on MNRAS. 10 pages, 8 figures. The Mathematica code for the
figures is available at: http://www.novicosmo.org/salucci.asp Corrected typo
Barium and Yttrium abundance in intermediate-age and old open clusters
Barium is a neutron capture element, that, in open clusters, is frequently
over-abundant with respect to the Iron. A clear explanation for this is still
missing. Additionally, its gradient across the Galactic disk is poorly
constrained. We measure the abundance of yttrium and barium using the synthetic
spectrum method from UVES high-resolution spectra of eight distant open
clusters, namely Ruprecht 4, Ruprecht 7, Berkeley 25, Berkeley 73, Berkeley 75,
NGC 6192, NGC 6404, and NGC 6583. The barium abundance was estimated using NLTE
approximation. We confirm that Barium is indeed over-abundant in most clusters,
especially young clusters. Finally, we investigated the trend of yttrium and
barium abundances as a function of distance in the Galaxy and ages. Several
scenarios for the barium over-abundance are then discussed.Comment: 9 pages, 10 figure
On the subject of the Ba overabundance in the open clusters stars
For eight distant open clusters, namely Ruprecht 4, Ruprecht 7, Berkeley 25, Berkeley 73, Berkeley 75, NGC 6192, NGC 6404, and NGC 6583, we determined the yttrium and barium abundances using the UVES, VLT spectra (ESO, Chile). The stars of one young cluster (Ruprecht 7) demonstrate significant barium overabundance( 3c0.55 dex) that can not be due to the determination error. We have considered the Ba abundance determination errors due to LTE approach, saturation of the lines, synthetic and observed barium line fitting, and the causes of the Ba overabundance associated with the Galactic disc enrichment or the origin of open clusters. Possible explanation for this overabundance can be the origin of n-capture elements enrichment of the clusters (galactic or extragalactic) or additional sources of the Ba production
EAS spectrum in the primary energy region above 10 to the 15th power eV by the Akeno and Yakutsk array data
The extensive air showers spectrum on scintillation desity Rko in primary energy region E sub approx. 10 to the 15th power - 10 to the 20th power eV on the Yakutsk array data and recent results of the Akeno is given
The use of the method of base diagrams for predicting the long-term strength under static and cyclic loading
It is shown that the experience of processing the large amounts of experimental data
on the long-term strength of heat-resistant steels and alloys using the method of base
diagrams, which were obtained from testing of smooth specimens, can be used effectively for
proper processing of test results for notched specimens. Extensive research has been carried
out in order to find an appropriate combination of a lifetime prediction rule and a suitable
constitutive model to give a reliable prediction of lifetime in idealized creep-rupture-low
cycle fatigue interaction conditions
Educational Project Activities in the Process of Teaching of Bachelors
Π‘ΡΠ°ΡΡΡ ΡΠ°ΡΠΊΡΡΠ²Π°Π΅Ρ ΠΏΡΠΎΠ±Π»Π΅ΠΌΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠΎΠ»ΠΈ ΠΈΠ½Π½ΠΎΠ²Π°ΡΠΈΠΎΠ½Π½ΠΎΠΉ Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ Π² ΡΠ°Π·Π²ΠΈΡΠΈΠΈ ΠΏΡΠΎΡΠ΅ΡΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΠΈ Π»ΠΈΡΠ½ΠΎΡΡΠ½ΡΡ
ΠΊΠ°ΡΠ΅ΡΡΠ² Π±Π°ΠΊΠ°Π»Π°Π²ΡΠΎΠ² ΡΠ½ΠΈΠ²Π΅ΡΡΠΈΡΠ΅ΡΠ°. Π ΡΠ°Π±ΠΎΡΠ΅ ΡΠ°ΡΠΊΡΡΡΡ ΠΏΡΠΎΠ΅ΠΊΡΠ½ΡΠ΅ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΎΠ±ΡΡΠ΅Π½ΠΈΡ ΠΈ ΡΡΠ»ΠΎΠ²ΠΈΡ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΡΠ΅ΡΠ»Π΅ΠΊΡΠΈΠ²Π½ΡΡ
ΡΠΌΠ΅Π½ΠΈΠΉ ΠΎΠ±ΡΡΠ°ΡΡΠΈΡ
ΡΡ.The article reveals the problem of research on the role of project activities in the development of professional and personal qualities of bachelors University. The paper disclosed the project methods of teaching and conditions of development of reflective abilities of students
The Use of an Electronic Resource in the Educational Process
Π Π½Π°ΡΡΠΎΡΡΠ΅Π΅ Π²ΡΠ΅ΠΌΡ Π°ΠΊΡΡΠ°Π»ΡΠ½ΡΠΌΠΈ ΡΠ²Π»ΡΡΡΡΡ Π²ΠΎΠΏΡΠΎΡΡ ΡΡΠ΅Π±Π½ΠΎ-ΠΌΠ΅ΡΠΎΠ΄ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ° ΠΏΠΎ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ ΡΡΠ΅Π±Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΡΠ΅ΡΡΠ° Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΅ΡΡΡΡΠ°. ΠΡΠ΅Π΄ΠΌΠ΅ΡΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΠΌ ΡΠΎΡΠΌ Π΄Π»Ρ Π²ΡΠ΅Ρ
Π²ΠΈΠ΄ΠΎΠ² Π·Π°Π½ΡΡΠΈΠΉ, Π° ΠΈΠΌΠ΅Π½Π½ΠΎ Π΄Π»Ρ Π»Π΅ΠΊΡΠΈΠΉ, ΡΠ΅ΠΌΠΈΠ½Π°ΡΡΠΊΠΈΡ
Π·Π°Π½ΡΡΠΈΠΉ, Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠ°ΠΊΡΠΈΠΊΡΠΌΠ°. Π Ρ
ΠΎΠ΄Π΅ Π΄Π°Π½Π½ΠΎΠΉ ΡΡΠ°ΡΡΠΈ ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΠΉ ΡΠΎΡΠΌΠ°Ρ ΠΏΡΠ΅Π΄ΠΎΡΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΈ ΠΏΠΎ Π΄ΠΈΡΡΠΈΠΏΠ»ΠΈΠ½Π΅ ΠΈ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΡ ΠΏΡΠΎΠ²Π΅ΡΠΊΠΈ Π·Π½Π°Π½ΠΈΠΉ Π² Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΌ ΡΠ΅ΠΆΠΈΠΌΠ΅, ΡΠ΅Π°Π»ΠΈΠ·ΡΠ΅ΠΌΡΠ΅ Π½Π° ΠΊΠ°ΡΠ΅Π΄ΡΠ΅ Π’Π΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΎΡΠ½ΠΎΠ² ΡΠ΅ΠΏΠ»ΠΎΡΠ΅Ρ
Π½ΠΈΠΊΠΈ ΠΈΠΌ. Π.Π. ΠΡΠΊΠ°Π»ΠΎΠ²ΠΈΡΠ° (Π’ΠΠ’ ΠΈΠΌ. Π.Π. ΠΡΠΊΠ°Π»ΠΎΠ²ΠΈΡΠ°) ΠΠΠ£ ΠΠΠ.Currently, issues of an educational and methodological nature on the organization of the educational process using an electronic resource are relevant. The subject of the study is the use of various electronic forms for all types of classes, namely for lectures, seminars, laboratory workshops. In the course of this article, the electronic format of providing information on the discipline and the organization of knowledge testing in automated mode, implemented at the Department of Theoretical Foundations of Thermal Engineering named after M.P. Vukalovich (TOT named after M.P. Vukalovich), are considered NIU MEI
Influence of liposome forms of rhenium-platinum anti-tumor system on the proliferative activity of cancer cells
Π£ΠΏΠ΅ΡΡΠ΅ ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ Π°Π½ΡΠΈΠΏΡΠΎΠ»ΡΡΠ΅ΡΠ°ΡΠΈΠ²Π½Ρ Π°ΠΊΡΠΈΠ²Π½ΡΡΡΡ ΡΠ΅Π½ΡΠΉ-ΠΏΠ»Π°ΡΠΈΠ½ΠΎΠ²ΠΎΡ ΡΠΈΡΡΠ΅ΠΌΠΈ Π½Π° ΠΊΠ»ΡΡΠΈΠ½Π°Ρ
ΡΠ°ΠΊΡ ΠΊΡΠΎΠ²Ρ Π»ΡΠ΄ΠΈΠ½ΠΈ Π‘ΠΠ-Π’4. ΠΠ°ΠΉΠ΅ΡΠ΅ΠΊΡΠΈΠ²Π½ΡΡΠΈΠΌΠΈ Π²ΠΈΡΠ²ΠΈΠ»ΠΈΡΡ Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠΈ, Π΄Π΅ Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°Π»ΠΈΡΡ ΠΎΠ±ΠΈΠ΄Π²Π° ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠΈ ΡΠΈΡΡΠ΅ΠΌΠΈ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ ΡΠ°ΠΊΠΎΠΆ ΠΏΠ΅ΡΠ΅Π²Π°Π³Ρ Π»ΡΠΏΠΎΡΠΎΠΌΠ½ΠΈΡ
ΡΠΎΡΠΌ ΠΏΠΎΡΡΠ²Π½ΡΠ½ΠΎ Π· ΡΠΎΠ·ΡΠΈΠ½Π°ΠΌΠΈ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΡΠ² ΡΠ° ΠΏΠ΅ΡΠ΅Π²Π°ΠΆΠ½ΠΈΠΉ Π°ΠΏΠΎΠΏΡΠΎΡΠΈΡΠ½ΠΈΠΉ ΠΌΠ΅Ρ
Π°Π½ΡΠ·ΠΌ Π·Π°Π³ΠΈΠ±Π΅Π»Ρ ΠΊΠ»ΡΡΠΈΠ½ ΠΏΡΠ΄ Π΄ΡΡΡ ΡΠΈΡΡΠ΅ΠΌΠΈ.ΠΠΏΠ΅ΡΠ²ΡΠ΅ ΠΏΠΎΠΊΠ°Π·Π°Π½Π° Π°Π½ΡΠΈΠΏΡΠΎΠ»ΠΈΡΠ΅ΡΠ°ΡΠΈΠ²Π½Π°Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΡΠ΅Π½ΠΈΠΉ-ΠΏΠ»Π°ΡΠΈΠ½ΠΎΠ²ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ Π½Π° ΠΊΠ»Π΅ΡΠΊΠ°Ρ
ΡΠ°ΠΊΠ° ΠΊΡΠΎΠ²ΠΈ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ° Π‘ΠΠ-Π’4. ΠΠ°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΡΠΌΠΈ ΠΎΠΊΠ°Π·Π°Π»ΠΈΡΡ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΡ, Π³Π΄Π΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈΡΡ ΠΎΠ±Π° ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠ° ΡΠΈΡΡΠ΅ΠΌΡ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ ΡΠ°ΠΊΠΆΠ΅ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²ΠΎ Π»ΠΈΠΏΠΎΡΠΎΠΌΠ½ΡΡ
ΡΠΎΡΠΌ Π² ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΈ Ρ ΡΠ°ΡΡΠ²ΠΎΡΠ°ΠΌΠΈ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ² ΠΈ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΠΉ Π°ΠΏΠΎΠΏΡΠΎΡΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌ Π³ΠΈΠ±Π΅Π»ΠΈ ΠΊΠ»Π΅ΡΠΎΠΊ ΠΏΠΎΠ΄ Π΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ΠΌ ΡΠΈΡΡΠ΅ΠΌΡ.First the antiproliferative activity of the antitumor system rhenium-platinum on the human blood cancer cells Π‘ΠΠ-Π’4 was shown. Experimental administration of both components of the system showed the most effectiveness. The advantages of liposomic forms in comparison with preparations solutions and dominating apoptotic mechanism of the cancer cells death under the treatment by the system were shown
Improvement of anal sphincter function before preventive stoma closure: modern options
Aim of investigation. To investigate options of improvement of anal sphincter function of defunctioning loop by BFT and tibial nerve stimulation.Material and methods. Overall 23 patients with preventive stoma were included in original investigation. Diagnostic profilometry and sphincterometry were carried out. Treatment included BFT and tibial nerve stimulation for 10 days. Results. After treatment profilometry revealed statistically significant increase of mean resting pressure, while sphincterometry β at conation as well.Conclusions. Muscular structures of the defunctioning anal sphincter respond to BFT and tibial nerve stimulation, increasing both tension and force of voluntary contractions
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