216 research outputs found
Constraints on the total coupling strength to bosons in iron based superconductors
At present, there is still no consistent interpretation of the normal and
superconducting properties of Fe-based superconductors (FeSCs). The strength of
the el-el interaction and the role of correlation effects are under debate.
Here, we examine several common materials and illustrate various problems and
concepts that are generic for all FeSCs. Based on empirical observations and
qualitative insight from density functional theory, we show that the
superconducting and low-energy thermodynamic properties of the FeSCs can be
described semi-quantitively within multiband Eliashberg theory. We account for
an important high-energy mass renormalization phenomenologically,and in
agreement with constraints provided by thermodynamic, optical, and
angle-resolved photoemission data. When seen in this way, all FeSCs with
40~K studied so far are found to belong to an {\it
intermediate} coupling regime. This finding is in contrast to the strong
coupling scenarios proposed in the early period of the FeSC history.We also
discuss several related issues, including the role of band shifts as measured
by the positions of van Hove singularities, and the nature of a recently
suggested quantum critical point in the strongly hole-doped systems
AFeAs (A = K, Rb, Cs). Using high-precision full relativistic GGA-band
structure calculations, we arrive at a somewhat milder mass renormalization in
comparison with previous studies. From the calculated mass anisotropies of all
Fermi surface sheets, only the -pocket near the corner of the BZ
is compatible with the experimentally observed anisotropy of the upper critical
field. pointing to its dominant role in the superconductivity of these three
compounds.Comment: 19 pages, 9 figure
Π€ΡΠ½ΠΊΡΡΡ ΡΠ° ΠΏΠΎΠ²Π½ΠΎΠ²Π°ΠΆΠ΅Π½Π½Ρ ΠΠ±ΡΠΎΠΉΠ½ΠΈΡ Π‘ΠΈΠ» Π£ΠΊΡΠ°ΡΠ½ΠΈ Ρ ΡΡΠ΅ΡΡ ΠΏΡΠΎΡΠΈΠ΄ΡΡ Π·Π»ΠΎΡΠΈΠ½Π½ΠΎΡΡΡ
The functions and powers of the Armed Forces of Ukraine in the field of combating crime are researched. The expediency and necessity of studying the functions and powers as structural elements of the administrative and legal status of the Armed Forces of Ukraine is emphasized, which is especially relevant in connection with the reform of the Armed Forces of Ukraine and bringing their service activities to NATO standards.
It is determined that the legal category of "authority" consists of the rights and obligations of the Armed Forces of Ukraine, including in the sphere of crime counteraction, aimed at the implementation of functions and tasks of the Armed Forces of Ukraine in accordance with the current legislation.
It is emphasized that in order to ensure the implementation of the said functions of the Armed Forces of Ukraine, they have the right to take measures to restore the territorial integrity of Ukraine, as well as to provide comprehensive development of secure, economic, information, telecommunication, social and humanitarian infrastructure on the territories adjacent to the temporarily occupied territories in Donetsk and Luhansk to implement, in accordance with strategic defense planning documents, measures to strengthen defense and security capabilities of the country.
Regulatory acts defining the functions and powers of certain structural units of the Armed Forces of Ukraine are analyzed. The author's vision of the concept of "functions of the Armed Forces of Ukraine" is offered and his own classification of functions and powers of the Armed Forces of Ukraine is given.ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½ΠΎ ΡΡΠ½ΠΊΡΡΡ ΡΠ° ΠΏΠΎΠ²Π½ΠΎΠ²Π°ΠΆΠ΅Π½Π½Ρ ΠΠ±ΡΠΎΠΉΠ½ΠΈΡ
Π‘ΠΈΠ» Π£ΠΊΡΠ°ΡΠ½ΠΈ Ρ ΡΡΠ΅ΡΡ ΠΏΡΠΎΡΠΈΠ΄ΡΡ Π·Π»ΠΎΡΠΈΠ½Π½ΠΎΡΡΡ. ΠΠ°Π³ΠΎΠ»ΠΎΡΠ΅Π½ΠΎ Π½Π° Π΄ΠΎΡΡΠ»ΡΠ½ΠΎΡΡΡ ΡΠ° Π½Π΅ΠΎΠ±Ρ
ΡΠ΄Π½ΠΎΡΡΡ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΡΡΠ½ΠΊΡΡΠΉ ΡΠ° ΠΏΠΎΠ²Π½ΠΎΠ²Π°ΠΆΠ΅Π½Ρ ΡΠΊ ΡΡΡΡΠΊΡΡΡΠ½ΠΈΡ
Π΅Π»Π΅ΠΌΠ΅Π½ΡΡΠ² Π°Π΄ΠΌΡΠ½ΡΡΡΡΠ°ΡΠΈΠ²Π½ΠΎ-ΠΏΡΠ°Π²ΠΎΠ²ΠΎΠ³ΠΎ ΡΡΠ°ΡΡΡΡ ΠΠ±ΡΠΎΠΉΠ½ΠΈΡ
Π‘ΠΈΠ» Π£ΠΊΡΠ°ΡΠ½ΠΈ, ΡΠΎ Ρ ΠΎΡΠΎΠ±Π»ΠΈΠ²ΠΎ Π°ΠΊΡΡΠ°Π»ΡΠ½ΠΈΠΌ Ρ Π·Π²βΡΠ·ΠΊΡ Π· ΡΠ΅ΡΠΎΡΠΌΡΠ²Π°Π½Π½ΡΠΌ ΠΠ±ΡΠΎΠΉΠ½ΠΈΡ
Π‘ΠΈΠ» Π£ΠΊΡΠ°ΡΠ½ΠΈ, ΡΠ° ΠΏΡΠΈΠ²Π΅Π΄Π΅Π½Π½Ρ ΡΡ
ΡΠ»ΡΠΆΠ±ΠΎΠ²ΠΎΡ Π΄ΡΡΠ»ΡΠ½ΠΎΡΡΡ Π΄ΠΎ ΡΡΠ°Π½Π΄Π°ΡΡΡΠ² ΠΠΠ’Π. ΠΡΠΎΠ°Π½Π°Π»ΡΠ·ΠΎΠ²Π°Π½Ρ Π½ΠΎΡΠΌΠ°ΡΠΈΠ²Π½ΠΎ-ΠΏΡΠ°Π²ΠΎΠ²Ρ Π°ΠΊΡΠΈ, ΡΠΎ Π²ΠΈΠ·Π½Π°ΡΠ°ΡΡΡ ΡΡΠ½ΠΊΡΡΡ ΡΠ° ΠΏΠΎΠ²Π½ΠΎΠ²Π°ΠΆΠ΅Π½Π½Ρ ΠΎΠΊΡΠ΅ΠΌΠΈΡ
ΡΡΡΡΠΊΡΡΡΠ½ΠΈΡ
ΠΏΡΠ΄ΡΠΎΠ·Π΄ΡΠ»ΡΠ² ΠΠ±ΡΠΎΠΉΠ½ΠΈΡ
Π‘ΠΈΠ» Π£ΠΊΡΠ°ΡΠ½ΠΈ. ΠΠ°ΠΏΡΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΎ Π°Π²ΡΠΎΡΡΡΠΊΠ΅ Π±Π°ΡΠ΅Π½Π½Ρ ΠΏΠΎΠ½ΡΡΡΡ Β«ΡΡΠ½ΠΊΡΡΡ ΠΠ±ΡΠΎΠΉΠ½ΠΈΡ
Π‘ΠΈΠ» Π£ΠΊΡΠ°ΡΠ½ΠΈΒ» ΡΠ° Π½Π°Π΄Π°Π½ΠΎ Π²Π»Π°ΡΠ½Ρ ΠΊΠ»Π°ΡΠΈΡΡΠΊΠ°ΡΡΡ ΡΡΠ½ΠΊΡΡΠΉ ΡΠ° ΠΏΠΎΠ²Π½ΠΎΠ²Π°ΠΆΠ΅Π½Ρ ΠΠ±ΡΠΎΠΉΠ½ΠΈΡ
Π‘ΠΈΠ» Π£ΠΊΡΠ°ΡΠ½ΠΈ
Π‘ΠΈΠ½ΡΠ΅Π· ΡΠ° Π°Π½Π°Π»Π³Π΅ΡΠΈΡΠ½Ρ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ N-(Π±Π΅Π½Π·ΠΈΠ»)-2-Π³ΡΠ΄ΡΠΎΠΊΡΠΈ-9-ΠΌΠ΅ΡΠΈΠ»-4-ΠΎΠΊΡΠΎ-4Π-ΠΏΡΡΠΈΠ΄ΠΎ[1,2-a]ΠΏΡΡΠΈΠΌΡΠ΄ΠΈΠ½-3-ΠΊΠ°ΡΠ±ΠΎΠΊΡΠ°ΠΌΡΠ΄ΡΠ²
Continuing the search for new analgesics among derivatives of azahetarylcaboxylic acids by the reaction of ethylΒ 2-hydroxy-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylate and benzylamines in boiling ethanol the correspondingΒ group of N-(benzyl)-2-hydroxy-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxamides has beenΒ synthesized. The structure of the compounds obtained has been confirmed by the data of elemental analysisΒ and NMR 1H spectroscopy. It is noted that the signals of aromatic protons of pyrido-pyrimidine nuclei are shiftedΒ downfield and generally for a typical AMX spin system. At the same time, the signals of aromatic protons ofΒ benzilamide fragments on the contrary are shifted upfield in all cases and focused on very narrow segments of theΒ spectra, thereby undergoing strong distortion. According to the results of the primary pharmacological screeningΒ it has been found that using the standard model of βacetic acid writhingsβ all N-(benzyl)-2-hydroxy-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxamides without exception have analgesic properties to a greater or lesser Β degree. Practically the same regularities of the benzylamide fragment structure βbiological effect relationship as inΒ the case of 4-hydroxyquinolin-2-ones analogues have been found. Based on it the conclusion about bioisosterismΒ of 4-hydroxyquinolin-2-one and 2-hydroxy-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine nuclei has been made.ΠΡΠΎΠ΄ΠΎΠ»ΠΆΠ°Ρ ΠΏΠΎΠΈΡΠΊ Π½ΠΎΠ²ΡΡ
Π°Π½Π°Π»ΡΠ³Π΅ΡΠΈΠΊΠΎΠ² ΡΡΠ΅Π΄ΠΈ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π½ΡΡ
Π°Π·Π°Π³Π΅ΡΠ°ΡΠΈΠ»ΠΊΠ°ΡΠ±ΠΎΠ½ΠΎΠ²ΡΡ
ΠΊΠΈΡΠ»ΠΎΡ, ΡΠ΅Π°ΠΊΡΠΈΠ΅ΠΉ ΡΡΠΈΠ»Β 2-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈ-9-ΠΌΠ΅ΡΠΈΠ»-4-ΠΎΠΊΡΠΎ-4Π-ΠΏΠΈΡΠΈΠ΄ΠΎ[1,2-a]ΠΏΠΈΡΠΈΠΌΠΈΠ΄ΠΈΠ½-3-ΠΊΠ°ΡΠ±ΠΎΠΊΡΠΈΠ»Π°ΡΠ° Ρ Π±Π΅Π½Π·ΠΈΠ»Π°ΠΌΠΈΠ½Π°ΠΌΠΈ Π² ΠΊΠΈΠΏΡΡΠ΅ΠΌ ΡΡΠ°Π½ΠΎΠ»Π΅Β ΠΌΡ ΠΎΡΡΡΠ΅ΡΡΠ²ΠΈΠ»ΠΈ ΡΠΈΠ½ΡΠ΅Π· Π³ΡΡΠΏΠΏΡ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΡΡΠΈΡ
N-(Π±Π΅Π½Π·ΠΈΠ»)-2-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈ-9-ΠΌΠ΅ΡΠΈΠ»-4-ΠΎΠΊΡΠΎ-4Π-ΠΏΠΈΡΠΈΠ΄ΠΎ[1,2-a]Β ΠΏΠΈΡΠΈΠΌΠΈΠ΄ΠΈΠ½-3-ΠΊΠ°ΡΠ±ΠΎΠΊΡΠ°ΠΌΠΈΠ΄ΠΎΠ². ΠΠ»Ρ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΈΡ ΡΡΡΠΎΠ΅Π½ΠΈΡ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
Π²Π΅ΡΠ΅ΡΡΠ² ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ½ΡΠΉΒ Π°Π½Π°Π»ΠΈΠ· ΠΈ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΡ 1Π Π―ΠΠ . ΠΡΠΌΠ΅ΡΠ΅Π½ΠΎ, ΡΡΠΎ ΡΠΈΠ³Π½Π°Π»Ρ Π°ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠΎΠ½ΠΎΠ² ΠΏΠΈΡΠΈΠ΄ΠΎ-ΠΏΠΈΡΠΈΠΌΠΈΠ΄ΠΈΠ½ΠΎΠ²ΠΎΠ³ΠΎΒ ΡΠ΄ΡΠ° ΡΠ΄Π²ΠΈΠ½ΡΡΡ Π² ΡΠ»Π°Π±ΠΎΠ΅ ΠΏΠΎΠ»Π΅ ΠΈ Π² ΡΠ΅Π»ΠΎΠΌ ΠΎΠ±ΡΠ°Π·ΡΡΡ ΡΠΈΠΏΠΈΡΠ½ΡΡ ΠΠΠ₯ ΡΠΏΠΈΠ½ΠΎΠ²ΡΡ ΡΠΈΡΡΠ΅ΠΌΡ. Π ΡΠΎ ΠΆΠ΅ Π²ΡΠ΅ΠΌΡ ΡΠΈΠ³Π½Π°Π»ΡΒ Π°ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠΎΠ½ΠΎΠ² Π±Π΅Π½Π·ΠΈΠ»Π°ΠΌΠΈΠ΄Π½ΡΡ
ΡΡΠ°Π³ΠΌΠ΅Π½ΡΠΎΠ² Π½Π°ΠΎΠ±ΠΎΡΠΎΡ Π²ΠΎ Π²ΡΠ΅Ρ
ΡΠ»ΡΡΠ°ΡΡ
ΡΠΌΠ΅ΡΠ΅Π½Ρ Π² ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎΒ ΡΠΈΠ»ΡΠ½ΠΎΠ΅ ΠΏΠΎΠ»Π΅ ΠΈ ΡΠΎΡΡΠ΅Π΄ΠΎΡΠΎΡΠ΅Π½Ρ Π½Π° ΠΎΡΠ΅Π½Ρ ΡΠ·ΠΊΠΈΡ
ΠΎΡΡΠ΅Π·ΠΊΠ°Ρ
ΡΠΏΠ΅ΠΊΡΡΠΎΠ², Π·Π° ΡΡΠ΅Ρ ΡΠ΅Π³ΠΎ ΠΏΡΠ΅ΡΠ΅ΡΠΏΠ΅Π²Π°ΡΡ ΡΠΈΠ»ΡΠ½ΠΎΠ΅ ΠΈΡΠΊΠ°ΠΆΠ΅Π½ΠΈΠ΅. ΠΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ°ΠΌ ΠΏΠ΅ΡΠ²ΠΈΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΡΠΌΠ°ΠΊΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΊΡΠΈΠ½ΠΈΠ½Π³Π° ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ Π½Π° ΡΡΠ°Π½Π΄Π°ΡΡΠ½ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΡΠΊΡΡΡΠ½ΠΎΠΊΠΈΡΠ»ΡΡ
Β«ΠΊΠΎΡΡΠ΅ΠΉΒ» Π²ΡΠ΅ Π±Π΅Π· ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΡ N-(Π±Π΅Π½Π·ΠΈΠ»)-2-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈ-9-ΠΌΠ΅ΡΠΈΠ»-4-ΠΎΠΊΡΠΎ-4Π-ΠΏΠΈΡΠΈΠ΄ΠΎ[1,2-a]ΠΏΠΈΡΠΈΠΌΠΈΠ΄ΠΈΠ½-3-ΠΊΠ°ΡΠ±ΠΎΠΊΡΠ°ΠΌΠΈΠ΄Ρ Π² ΡΠΎΠΉ ΠΈΠ»ΠΈ ΠΈΠ½ΠΎΠΉ ΡΡΠ΅ΠΏΠ΅Π½ΠΈ ΠΎΠ±Π»Π°Π΄Π°ΡΡ Π°Π½Π°Π»ΡΠ³Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ. ΠΡΠΈ ΡΡΠΎΠΌ ΠΎΠ±Π½Π°ΡΡΠΆΠ΅Π½Ρ ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈ ΡΠ΅ ΠΆΠ΅ Π·Π°ΠΊΠΎΠ½ΠΎΠΌΠ΅ΡΠ½ΠΎΡΡΠΈ Π²Π»ΠΈΡΠ½ΠΈΡ ΡΡΡΠΎΠ΅Π½ΠΈΡ Π±Π΅Π½Π·ΠΈΠ»Π°ΠΌΠΈΠ΄Π½ΠΎΠ³ΠΎ ΡΡΠ°Π³ΠΌΠ΅Π½ΡΠ° Π½Π° Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΉΒ ΡΡΡΠ΅ΠΊΡ, ΡΡΠΎ ΠΈ Π² ΡΠ»ΡΡΠ°Π΅ 4-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈΡ
ΠΈΠ½ΠΎΠ»ΠΈΠ½-2-ΠΎΠ½ΠΎΠ²ΡΡ
Π°Π½Π°Π»ΠΎΠ³ΠΎΠ². ΠΠ° ΡΡΠΎΠΌ ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ΄Π΅Π»Π°Π½ Π²ΡΠ²ΠΎΠ΄ ΠΎ Π±ΠΈΠΎΠΈΠ·ΠΎΡΡΠ΅ΡΠ½ΠΎΡΡΠΈ 4-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈΡ
ΠΈΠ½ΠΎΠ»ΠΈΠ½-2-ΠΎΠ½ΠΎΠ²ΠΎΠ³ΠΎ ΠΈ 2-Π³ΠΈΠ΄ΡΠΎΠΊΡΠΈ-9-ΠΌΠ΅ΡΠΈΠ»-4-ΠΎΠΊΡΠΎ-4Π-ΠΏΠΈΡΠΈΠ΄ΠΎ[1,2-a]ΠΏΠΈΡΠΈΠΌΠΈΠ΄ΠΈΠ½ΠΎΠ²ΠΎΠ³ΠΎ ΡΠ΄Π΅Ρ.Β ΠΡΠΎΠ΄ΠΎΠ²ΠΆΡΡΡΠΈ ΠΏΠΎΡΡΠΊ Π½ΠΎΠ²ΠΈΡ
Π°Π½Π°Π»Π³Π΅ΡΠΈΠΊΡΠ² ΡΠ΅ΡΠ΅Π΄ ΠΏΠΎΡ
ΡΠ΄Π½ΠΈΡ
Π°Π·Π°Π³Π΅ΡΠ°ΡΠΈΠ»ΠΊΠ°ΡΠ±ΠΎΠ½ΠΎΠ²ΠΈΡ
ΠΊΠΈΡΠ»ΠΎΡ, ΡΠ΅Π°ΠΊΡΡΡΡ Π΅ΡΠΈΠ» 2-Π³ΡΠ΄ΡΠΎΠΊΡΠΈ-9-ΠΌΠ΅ΡΠΈΠ»-4-ΠΎΠΊΡΠΎ-4Π-ΠΏΡΡΠΈΠ΄ΠΎ[1,2-a]ΠΏΡΡΠΈΠΌΡΠ΄ΠΈΠ½-3-ΠΊΠ°ΡΠ±ΠΎΠΊΡΠΈΠ»Π°ΡΡ Π· Π±Π΅Π½Π·ΠΈΠ»Π°ΠΌΡΠ½Π°ΠΌΠΈ Ρ ΠΊΠΈΠΏΠ»ΡΡΠΎΠΌΡ Π΅ΡΠ°Π½ΠΎΠ»Ρ ΠΌΠΈ Π·Π΄ΡΠΉΡΠ½ΠΈΠ»ΠΈΒ ΡΠΈΠ½ΡΠ΅Π· Π³ΡΡΠΏΠΈ Π²ΡΠ΄ΠΏΠΎΠ²ΡΠ΄Π½ΠΈΡ
N-(Π±Π΅Π½Π·ΠΈΠ»)-2-Π³ΡΠ΄ΡΠΎΠΊΡΠΈ-9-ΠΌΠ΅ΡΠΈΠ»-4-ΠΎΠΊΡΠΎ-4Π-ΠΏΡΡΠΈΠ΄ΠΎ[1,2-a]ΠΏΡΡΠΈΠΌΡΠ΄ΠΈΠ½-3-ΠΊΠ°ΡΠ±ΠΎΠΊΡΠ°ΠΌΡΠ΄ΡΠ². ΠΠ»Ρ ΠΏΡΠ΄Β ΡΠ²Π΅ΡΠ΄ΠΆΠ΅Π½Π½Ρ Π±ΡΠ΄ΠΎΠ²ΠΈ ΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ
ΡΠ΅ΡΠΎΠ²ΠΈΠ½ Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Ρ Π΅Π»Π΅ΠΌΠ΅Π½ΡΠ½ΠΈΠΉ Π°Π½Π°Π»ΡΠ· ΡΠ° ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΡΡ 1Π Π―ΠΠ . ΠΠΎΠΌΡΡΠ΅Π½ΠΎ,Β ΡΠΎ ΡΠΈΠ³Π½Π°Π»ΠΈ Π°ΡΠΎΠΌΠ°ΡΠΈΡΠ½ΠΈΡ
ΠΏΡΠΎΡΠΎΠ½ΡΠ² ΠΏΡΡΠΈΠ΄ΠΎ-ΠΏΡΡΠΈΠΌΡΠ΄ΠΈΠ½ΠΎΠ²ΠΎΠ³ΠΎ ΡΠ΄ΡΠ° Π·ΡΡΠ½ΡΡΡ Ρ ΡΠ»Π°Π±ΠΊΠ΅ ΠΏΠΎΠ»Π΅ Ρ Π² ΡΡΠ»ΠΎΠΌΡ ΡΡΠ²ΠΎΡΡΡΡΡΒ ΡΠΈΠΏΠΎΠ²Ρ ΠΠΠ₯ ΡΠΏΡΠ½ΠΎΠ²Ρ ΡΠΈΡΡΠ΅ΠΌΡ. Π ΡΠΎΠΉ ΠΆΠ΅ ΡΠ°Ρ ΡΠΈΠ³Π½Π°Π»ΠΈ Π°ΡΠΎΠΌΠ°ΡΠΈΡΠ½ΠΈΡ
ΠΏΡΠΎΡΠΎΠ½ΡΠ² Π±Π΅Π½Π·ΠΈΠ»Π°ΠΌΡΠ΄Π½ΠΈΡ
ΡΡΠ°Π³ΠΌΠ΅Π½ΡΡΠ² Π½Π°Π²ΠΏΠ°ΠΊΠΈ Π² ΡΡΡΡ
Π²ΠΈΠΏΠ°Π΄ΠΊΠ°Ρ
Π·ΠΌΡΡΠ΅Π½Ρ Ρ Π²ΡΠ΄Π½ΠΎΡΠ½ΠΎ ΡΠΈΠ»ΡΠ½Π΅ ΠΏΠΎΠ»Π΅ ΡΠ° Π·ΠΎΡΠ΅ΡΠ΅Π΄ΠΆΠ΅Π½Ρ Π½Π° Π΄ΡΠΆΠ΅ Π²ΡΠ·ΡΠΊΠΈΡ
Π²ΡΠ΄ΡΡΠ·ΠΊΠ°Ρ
ΡΠΏΠ΅ΠΊΡΡΡΠ², Π·Π° ΡΠ°Ρ
ΡΠ½ΠΎΠΊ ΡΠΎΠ³ΠΎ ΠΏΡΠ΄Π΄Π°ΡΡΡΡΡ Π΄ΠΎΡΠΈΡΡ ΡΠΈΠ»ΡΠ½ΠΎΠΌΡ ΡΠΏΠΎΡΠ²ΠΎΡΠ΅Π½Π½Ρ. ΠΠ° ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ°ΠΌΠΈ ΠΏΠ΅ΡΠ²ΠΈΠ½Π½ΠΎΠ³ΠΎ ΡΠ°ΡΠΌΠ°ΠΊΠΎΠ»ΠΎΠ³ΡΡΠ½ΠΎΠ³ΠΎ ΡΠΊΡΠΈΠ½ΡΠ½Π³Ρ Π²ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΠΎ Π½Π° ΡΡΠ°Π½Π΄Π°ΡΡΠ½ΡΠΉ ΠΌΠΎΠ΄Π΅Π»Ρ ΠΎΡΡΠΎΠ²ΠΎΠΊΠΈΡΠ»ΠΈΡ
Β«ΠΊΠΎΡΡΡΠ²Β» Π²ΡΡ Π±Π΅Π· Π²ΠΈΠΊΠ»ΡΡΠ΅Π½Π½Ρ N-(Π±Π΅Π½Π·ΠΈΠ»)-2-Π³ΡΠ΄ΡΠΎΠΊΡΠΈ-9-ΠΌΠ΅ΡΠΈΠ»-4-ΠΎΠΊΡΠΎ-4Π-ΠΏΡΡΠΈΠ΄ΠΎ[1,2-a]ΠΏΡΡΠΈΠΌΡΠ΄ΠΈΠ½-3-ΠΊΠ°ΡΠ±ΠΎΠΊΡΠ°ΠΌΡΠ΄ΠΈ Π² ΡΡΠΉ ΡΠΈ ΡΠ½ΡΡΠΉ ΠΌΡΡΡ Π²ΠΈΡΠ²Π»ΡΡΡΡ Π°Π½Π°Π»Π³Π΅ΡΠΈΡΠ½Ρ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ.Β ΠΡΠΈ ΡΡΠΎΠΌΡ Π·Π½Π°ΠΉΠ΄Π΅Π½Ρ ΠΏΡΠ°ΠΊΡΠΈΡΠ½ΠΎ ΡΡ ΠΆ Π·Π°ΠΊΠΎΠ½ΠΎΠΌΡΡΠ½ΠΎΡΡΡ Π²ΠΏΠ»ΠΈΠ²Ρ Π±ΡΠ΄ΠΎΠ²ΠΈ Π±Π΅Π½Π·ΠΈΠ»Π°ΠΌΡΠ΄Π½ΠΎΠ³ΠΎ ΡΡΠ°Π³ΠΌΠ΅Π½ΡΠ° Π½Π° Π±ΡΠΎΠ»ΠΎΠ³ΡΡΠ½ΠΈΠΉΒ Π΅ΡΠ΅ΠΊΡ, ΡΠΎ ΠΉ Ρ Π²ΠΈΠΏΠ°Π΄ΠΊΡ 4-Π³ΡΠ΄ΡΠΎΠΊΡΠΈΡ
ΡΠ½ΠΎΠ»ΡΠ½-2-ΠΎΠ½ΠΎΠ²ΠΈΡ
Π°Π½Π°Π»ΠΎΠ³ΡΠ². ΠΠ° ΠΏΡΠ΄ΡΡΠ°Π²Ρ ΡΡΠΎΠ³ΠΎ Π·ΡΠΎΠ±Π»Π΅Π½ΠΎ Π²ΠΈΡΠ½ΠΎΠ²ΠΎΠΊ ΡΠΎΠ΄ΠΎ Π±ΡΠΎΡΠ·ΠΎΡΡΠ΅ΡΠ½ΠΎΡΡΡ 4-Π³ΡΠ΄ΡΠΎΠΊΡΠΈΡ
ΡΠ½ΠΎΠ»ΡΠ½-2-ΠΎΠ½ΠΎΠ²ΠΎΠ³ΠΎ ΡΠ° 2-Π³ΡΠ΄ΡΠΎΠΊΡΠΈ-9-ΠΌΠ΅ΡΠΈΠ»-4-ΠΎΠΊΡΠΎ-4Π-ΠΏΡΡΠΈΠ΄ΠΎ[1,2-a]ΠΏΡΡΠΈΠΌΡΠ΄ΠΈΠ½ΠΎΠ²ΠΎΠ³ΠΎ ΡΠ΄Π΅Ρ
Birational automorphisms of a three-dimensional double quadric with an elementary singularity
It is proved that the group of birational automorphisms of a
three-dimensional double quadric with a singular point arising from a double
point on the branch divisor is a semidirect product of the free group generated
by birational involutions of a special form and the group of regular
automorphisms. The proof is based on the method of `untwisting' maximal
singularities of linear systems.Comment: 18 page
Birational rigidity of a three-dimensional double cone
It is proved that a three-dimensional double cone is a birationally rigid
variety. We also compute the group of birational automorphisms of such a
variety. This work is based on the method of "untwisting" maximal singularities
of linear system.Comment: 20 pages; AmsLaTe
Mineralogical and geochemical features of the Manus Basin hydrothermal sulfide ores, Bismarck Sea
Paragenetic mineral assemblages have been established based on
mineralogical, chemical, and isotope (S, Pb) studies, and the sequence
of deposition has been defined in hydrothennal sulfide structures in a
typical back-arc basin. The ores in the Manus basin have a prominent
Zn specialization (sphalerite, wΓΌrtzite, and fe-sphalerite). An association
of Fe-spbalerite and galena with Ag sulfosalts is noted that is not
characteristic of typical midocean ridge hydrothennal systems. The
average 34S in the sulfide minerals is 3.5%o, which corresponds to the
medium-temperature sphalerite stage in hydrothermal mineral fonnation.
It is suggested that the metal source is located in the relatively acid
rocks of the island-arc tholeiitic series and possibly in sediments
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