946 research outputs found
Exact quantum master equation for a molecular aggregate coupled to a harmonic bath
We consider a molecular aggregate consisting of identical monomers. Each
monomer comprises two electronic levels and a single harmonic mode. The
monomers interact with each other via dipole-dipole forces. The monomer
vibrational modes are bilinearly coupled to a bath of harmonic oscillators.
This is a prototypical model for the description of coherent exciton transport,
from quantum dots to photosynthetic antennae. We derive an exact quantum master
equation for such systems. Computationally, the master equation may be useful
for the testing of various approximations employed in theories of quantum
transport. Physically, it offers a plausible explanation of the origins of
long-lived coherent optical responses of molecular aggregates in dissipative
environments
Extrapolation of the principles of the quality management for the organization of the system of housing and communal services
Π ΡΡΠ°ΡΡΠ΅ ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΏΡΠΈΠ½ΡΠΈΠΏΠΎΠ² ΠΌΠ΅Π½Π΅Π΄ΠΆΠΌΠ΅Π½ΡΠ° ΠΊΠ°ΡΠ΅ΡΡΠ²Π° Π² ΡΡΠ΅ΡΠ΅ ΠΆΠΈΠ»ΠΈΡΠ½ΠΎ-ΠΊΠΎΠΌΠΌΡΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ Ρ
ΠΎΠ·ΡΠΉΡΡΠ²Π°. ΠΡ
Π²Π½Π΅Π΄ΡΠ΅Π½ΠΈΠ΅ Π² ΡΠΏΡΠ°Π²Π»ΡΡΡΠΈΡ
ΠΊΠΎΠΌΠΏΠ°Π½ΠΈΡΡ
ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΏΡΠ΅Π΄ΠΏΠΎΡΡΠ»ΠΊΠΎΠΉ Π΄Π»Ρ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠΈ ΡΠΈΡΡΠ΅ΠΌΡ ΠΌΠ΅Π½Π΅Π΄ΠΆΠΌΠ΅Π½ΡΠ° ΠΊΠ°ΡΠ΅ΡΡΠ²Π°, ΡΡΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΡ ΡΠΏΡΠ°Π²Π»ΡΡΡΠΈΠΌ ΠΊΠΎΠΌΠΏΠ°Π½ΠΈΡΠΌ Π²ΡΠΉΡΠΈ Π½Π° ΡΡΠΎΠ²Π΅Π½Ρ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΊΠ°ΡΠ΅ΡΡΠ²ΠΎΠΌ ΡΡΠ»ΡΠ³ Π΄Π»Ρ ΠΏΠΎΡΡΠ΅Π±ΠΈΡΠ΅Π»Π΅ΠΉ, ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΡΡΠΈΠΉ ΠΌΠ΅ΠΆΠ΄ΡΠ½Π°ΡΠΎΠ΄Π½ΡΠΌ ΡΡΠ°Π½Π΄Π°ΡΡΠ°ΠΌIn the article the possibility of application of quality management principles in the sphere of hous-ing and communal services. Their implementation in management companies is a prerequisite for the development of a quality management system that will allow management companies to reach the level of quality management services for consumers that meets international standard
Personnel management company housing as a key element of the quality management system and its preparation for the implementation of QMS
The introduction of new approaches to management, for example, the introduction of quality management system contributes to the resolution of many problems of modern enterprises, which does not bypass the sphere of housing and communal services. Any development and change takes place through training, which helps a person to adapt their behavior to changing external conditions. Therefore, the issue of staff training in the implementation of changes should be given increased attention. In this regard, the organization plans to develop a consulting system that will Β«on its ownΒ» to prepare employees for the implementation of QMSΠΠ½Π΅Π΄ΡΠ΅Π½ΠΈΠ΅ Π½ΠΎΠ²ΡΡ
ΠΏΠΎΠ΄Ρ
ΠΎΠ΄ΠΎΠ² ΠΊ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ, Π½Π°ΠΏΡΠΈΠΌΠ΅Ρ, Π²Π½Π΅Π΄ΡΠ΅Π½ΠΈΠ΅ ΡΠΈΡΡΠ΅ΠΌΡ ΠΌΠ΅Π½Π΅Π΄ΠΆΠΌΠ΅Π½ΡΠ° ΠΊΠ°ΡΠ΅ΡΡΠ²Π° ΡΠΏΠΎΡΠΎΠ±ΡΡΠ²ΡΠ΅Ρ ΡΠ°Π·ΡΠ΅ΡΠ΅Π½ΠΈΡ ΠΌΠ½ΠΎΠ³ΠΈΡ
ΠΏΡΠΎΠ±Π»Π΅ΠΌ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΡΡ
ΠΏΡΠ΅Π΄ΠΏΡΠΈΡΡΠΈΠΉ, ΡΡΠΎ Π½Π΅ ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΡ ΡΡΠΎΡΠΎΠ½ΠΎΠΉ ΠΈ ΡΡΠ΅ΡΡ ΠΆΠΈΠ»ΠΈΡΠ½ΠΎ-ΠΊΠΎΠΌΠΌΡΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ Ρ
ΠΎΠ·ΡΠΉΡΡΠ²Π°. ΠΡΠ±ΠΎΠ΅ ΡΠ°Π·Π²ΠΈΡΠΈΠ΅ ΠΈ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΠΏΡΠΎΠΈΡΡ
ΠΎΠ΄ΠΈΡ ΡΠ΅ΡΠ΅Π· ΠΎΠ±ΡΡΠ΅Π½ΠΈΠ΅, ΠΊΠΎΡΠΎΡΠΎΠ΅ ΠΏΠΎΠΌΠΎΠ³Π°Π΅Ρ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΡ Π°Π΄Π°ΠΏΡΠΈΡΠΎΠ²Π°ΡΡ ΡΠ²ΠΎΠ΅ ΠΏΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ ΠΊ ΠΈΠ·ΠΌΠ΅Π½ΡΡΡΠΈΠΌΡΡ Π²Π½Π΅ΡΠ½ΠΈΠΌ ΡΡΠ»ΠΎΠ²ΠΈΡΠΌ. ΠΠΎΡΡΠΎΠΌΡ Π²ΠΎΠΏΡΠΎΡΡ ΠΎΠ±ΡΡΠ΅Π½ΠΈΡ ΠΏΠ΅ΡΡΠΎΠ½Π°Π»Π° Π² Ρ
ΠΎΠ΄Π΅ Π²Π½Π΅Π΄ΡΠ΅Π½ΠΈΡ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ ΡΠ»Π΅Π΄ΡΠ΅Ρ ΡΠ΄Π΅Π»ΡΡΡ ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΠΎΠ΅ Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅. Π ΡΠ²ΡΠ·ΠΈ Ρ ΡΡΠΈΠΌ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΡ ΠΏΠ»Π°Π½ΠΈΡΡΠ΅Ρ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°ΡΡ ΡΠΈΡΡΠ΅ΠΌΡ ΠΊΠΎΠ½ΡΡΠ»ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ, ΠΊΠΎΡΠΎΡΠ°Ρ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΡ Β«ΡΠ²ΠΎΠΈΠΌΠΈ ΡΠΈΠ»Π°ΠΌΠΈΒ» ΠΏΠΎΠ΄Π³ΠΎΡΠΎΠ²ΠΈΡΡ ΡΠΎΡΡΡΠ΄Π½ΠΈΠΊΠΎΠ² ΠΊ Π²Π½Π΅Π΄ΡΠ΅Π½ΠΈΡ Π‘Π
Azimuthal modulation of the event rate of cosmic ray extensive air showers by the geomagnetic field
The Earth's magnetic field effect on the azimuthal distribution of extensive
air showers (EAS) of cosmic rays has been evaluated using a bulk of the Yakutsk
array data. The uniform azimuthal distribution of the EAS event rate is
rejected at the significance level 10^(-14). Amplitude of the first harmonics
of observed distribution depends on zenith angle as A1=0.2*sin^2(theta) and is
almost independent of the primary energy; the phase coincides with the magnetic
meridian. Basing upon the value of measured effect, the correction factor has
been derived for the particle density depending on a geomagnetic parameter of a
shower.Comment: 4 pages, 3 figures in ps file
ΠΠΎΡΡΠ΄Π°ΡΡΡΠ²Π΅Π½Π½Π°Ρ ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠ° ΠΈΠ½Π²Π΅ΡΡΠΈΡΠΈΠΎΠ½Π½ΡΡ ΠΏΡΠΎΠ΅ΠΊΡΠΎΠ² Π² ΡΠ°ΠΌΠΊΠ°Ρ ΡΠΎΠ³Π»Π°ΡΠ΅Π½ΠΈΡ ΠΎ Π·Π°ΡΠΈΡΠ΅ ΠΈ ΠΏΠΎΠΎΡΡΠ΅Π½ΠΈΠΈ ΠΊΠ°ΠΏΠΈΡΠ°Π»ΠΎΠ²Π»ΠΎΠΆΠ΅Π½ΠΈΠΉ: ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΎΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠ΅
The subject of research is economic interactions related to the implementation of an investment project within the framework of an agreement on the protection and promotion of investments (hereinafter referred to as the APCI).Purpose: methodological substantiation of the expediency of providing state support measures to ensure the minimum profitability of an investment project implemented within the framework of the APCI.Objectives: to propose an indicator that reflects the minimum profitability of an investment project, the mechanism for its usage to determine state support measures, additional state support measures in cases where they are not sufficiently established in the legislation.Methods: analysis of approaches to determining the discount rate; statistical (observation, grouping, method of indicators) for calculating industry-specific ROIC values; content analysis to select state support measures.Results: it is proposed to use the ROIC indicator as the minimum profitability of a commercial investment project. The indicator was calculated according to the data of all organizations that are not subjects of medium and small enterprises operating in the period 2012β2021. The sample included 133 organizations that make up eight subclasses of Russian classifier of types of economic activity (pulp and paper production; production of fertilizers and nitrogen compounds; production of pesticides, etc.; production of paints, varnishes, etc.; production of pharmaceutical substances; production of medicines; activities in the field of telecommunications; development of computer software). Based on the data from 1011 observations, the median value of ROIC for each subclass was calculated, the reliability of which is confirmed by the approved minimum rates of return on invested capital for calculating the tariffs of regulated organizations. A mechanism is proposed for using ROIC to determine state support measures within the framework of the APCI, including: determining the median value of ROIC for foreign economic activity, calculating ROIC for an investment project, and determining state support measures by their ratio. As additional measures of state support within the framework of the APCI, it is proposed to establish tax preferences (lower tax rates, tax benefits, tax deductions), as well as accelerated depreciation of fixed assets. The proposed developments create a methodological basis for substantiating the provision of various state support measures within the framework of the APCI.ΠΡΠ΅Π΄ΠΌΠ΅Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ βΒ ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΡ, ΡΠ²ΡΠ·Π°Π½Π½ΡΠ΅ Ρ ΠΎΡΡΡΠ΅ΡΡΠ²Π»Π΅Π½ΠΈΠ΅ΠΌ ΠΈΠ½Π²Π΅ΡΡΠΈΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ°, ΡΠ΅Π°Π»ΠΈΠ·ΡΠ΅ΠΌΠΎΠ³ΠΎ Π² ΡΠ°ΠΌΠΊΠ°Ρ
ΡΠΎΠ³Π»Π°ΡΠ΅Π½ΠΈΡ ΠΎ Π·Π°ΡΠΈΡΠ΅ ΠΈ ΠΏΠΎΠΎΡΡΠ΅Π½ΠΈΠΈ ΠΊΠ°ΠΏΠΈΡΠ°Π»ΠΎΠ²Π»ΠΎΠΆΠ΅Π½ΠΈΠΉ (Π΄Π°Π»Π΅Π΅ βΒ Π‘ΠΠΠ).Π¦Π΅Π»Ρ: ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΎΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ΅Π»Π΅ΡΠΎΠΎΠ±ΡΠ°Π·Π½ΠΎΡΡΠΈ ΠΏΡΠ΅Π΄ΠΎΡΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΌΠ΅Ρ Π³ΠΎΡΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠΈ Π΄Π»Ρ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΡ ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΠΎΠΉ Π΄ΠΎΡ
ΠΎΠ΄Π½ΠΎΡΡΠΈ ΠΈΠ½Π²Π΅ΡΡΠΈΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ°, ΡΠ΅Π°Π»ΠΈΠ·ΡΠ΅ΠΌΠΎΠ³ΠΎ Π² ΡΠ°ΠΌΠΊΠ°Ρ
Π‘ΠΠΠ.ΠΠ°Π΄Π°ΡΠΈ: ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠΈΡΡ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ, ΠΎΡΡΠ°ΠΆΠ°ΡΡΠΈΠΉ ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΡΡ Π΄ΠΎΡ
ΠΎΠ΄Π½ΠΎΡΡΡ ΠΈΠ½Π²Π΅ΡΡΠΈΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ°, ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌ Π΅Π³ΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Π΄Π»Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΌΠ΅Ρ Π³ΠΎΡΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠΈ, Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ ΠΌΠ΅ΡΡ Π³ΠΎΡΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠΈ Π² ΡΠ»ΡΡΠ°Π΅ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Π½ΡΡ
Π² Π·Π°ΠΊΠΎΠ½ΠΎΠ΄Π°ΡΠ΅Π»ΡΡΡΠ²Π΅.ΠΠ΅ΡΠΎΠ΄Ρ: Π°Π½Π°Π»ΠΈΠ· ΠΏΠΎΠ΄Ρ
ΠΎΠ΄ΠΎΠ² ΠΊ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΡΠ°Π²ΠΊΠΈ Π΄ΠΈΡΠΊΠΎΠ½ΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ; ΡΡΠ°ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ (Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΠ΅, Π³ΡΡΠΏΠΏΠΈΡΠΎΠ²ΠΊΠ°, ΠΌΠ΅ΡΠΎΠ΄ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ) Π΄Π»Ρ ΡΠ°ΡΡΠ΅ΡΠ° ΠΎΡΡΠ°ΡΠ»Π΅Π²ΡΡ
Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ ROIC; ΠΊΠΎΠ½ΡΠ΅Π½Ρ-Π°Π½Π°Π»ΠΈΠ· Π΄Π»Ρ Π²ΡΠ±ΠΎΡΠ° ΠΌΠ΅Ρ Π³ΠΎΡΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠΈ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ: Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΠΎΠΉ Π΄ΠΎΡ
ΠΎΠ΄Π½ΠΎΡΡΠΈ ΠΊΠΎΠΌΠΌΠ΅ΡΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΈΠ½Π²Π΅ΡΡΠΈΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ° ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΡ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ ROIC. ΠΡΠΎΠ²Π΅Π΄Π΅Π½ ΡΠ°ΡΡΠ΅Ρ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ ΠΏΠΎ Π΄Π°Π½Π½ΡΠΌ Π²ΡΠ΅Ρ
ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΉ, Π½Π΅ ΡΠ²Π»ΡΡΡΠΈΡ
ΡΡ ΡΡΠ±ΡΠ΅ΠΊΡΠ°ΠΌΠΈ ΡΡΠ΅Π΄Π½ΠΈΡ
ΠΈ ΠΌΠ°Π»ΡΡ
ΠΏΡΠ΅Π΄ΠΏΡΠΈΡΡΠΈΠΉ, ΡΡΠ½ΠΊΡΠΈΠΎΠ½ΠΈΡΡΡΡΠΈΡ
Π² ΠΏΠ΅ΡΠΈΠΎΠ΄ 2012β2021 Π³Π³. Π Π²ΡΠ±ΠΎΡΠΊΡ Π²ΠΎΡΠ»ΠΈ 133 ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ, ΡΠΎΡΡΠ°Π²Π»ΡΡΡΠΈΠ΅ Π²ΠΎΡΠ΅ΠΌΡ ΠΏΠΎΠ΄ΠΊΠ»Π°ΡΡΠΎΠ² ΠΠΠΠΠ (ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²ΠΎ ΡΠ΅Π»Π»ΡΠ»ΠΎΠ·Ρ ΠΈ Π±ΡΠΌΠ°Π³ΠΈ; ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²ΠΎ ΡΠ΄ΠΎΠ±ΡΠ΅Π½ΠΈΠΉ ΠΈ Π°Π·ΠΎΡΠ½ΡΡ
ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠΉ; ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²ΠΎ ΠΏΠ΅ΡΡΠΈΡΠΈΠ΄ΠΎΠ² ΠΈ Π΄Ρ.; ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²ΠΎ ΠΊΡΠ°ΡΠΎΠΊ, Π»Π°ΠΊΠΎΠ² ΠΈ Π΄Ρ.; ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²ΠΎ ΡΠ°ΡΠΌΠ°ΡΠ΅Π²ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΠ±ΡΡΠ°Π½ΡΠΈΠΉ; ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²ΠΎ Π»Π΅ΠΊΠ°ΡΡΡΠ²Π΅Π½Π½ΡΡ
ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠΎΠ²; Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΡ Π² ΡΡΠ΅ΡΠ΅ ΡΠ΅Π»Π΅ΠΊΠΎΠΌΠΌΡΠ½ΠΈΠΊΠ°ΡΠΈΠΉ; ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½ΠΎΠ³ΠΎ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΡ). ΠΠΎ Π΄Π°Π½Π½ΡΠΌ 1011 Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΠΉ ΡΠ°ΡΡΡΠΈΡΠ°Π½ΠΎ ΠΌΠ΅Π΄ΠΈΠ°Π½Π½ΠΎΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ ROIC Π΄Π»Ρ ΠΊΠ°ΠΆΠ΄ΠΎΠ³ΠΎ ΠΏΠΎΠ΄ΠΊΠ»Π°ΡΡΠ°, Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΠΎΡΡΡ ΠΊΠΎΡΠΎΡΠΎΠ³ΠΎ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π°Π΅ΡΡΡ ΡΡΠ²Π΅ΡΠΆΠ΄Π΅Π½Π½ΡΠΌΠΈ ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΡΠΌΠΈ Π½ΠΎΡΠΌΠ°ΠΌΠΈ Π΄ΠΎΡ
ΠΎΠ΄Π½ΠΎΡΡΠΈ ΠΈΠ½Π²Π΅ΡΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΊΠ°ΠΏΠΈΡΠ°Π»Π° Π΄Π»Ρ ΡΠ°ΡΡΠ΅ΡΠ° ΡΠ°ΡΠΈΡΠΎΠ² ΡΠ΅Π³ΡΠ»ΠΈΡΡΠ΅ΠΌΡΡ
ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΉ. ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ROIC Π΄Π»Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΌΠ΅Ρ Π³ΠΎΡΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠΈ Π² ΡΠ°ΠΌΠΊΠ°Ρ
Π‘ΠΠΠ, Π²ΠΊΠ»ΡΡΠ°ΡΡΠΈΠΉ: ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΌΠ΅Π΄ΠΈΠ°Π½Π½ΠΎΠ³ΠΎ Π·Π½Π°ΡΠ΅Π½ΠΈΡ ROIC ΠΏΠΎ ΠΠΠ, ΡΠ°ΡΡΠ΅Ρ ROIC ΠΏΠΎ ΠΈΠ½Π²Π΅ΡΡΠΈΡΠΈΠΎΠ½Π½ΠΎΠΌΡ ΠΏΡΠΎΠ΅ΠΊΡΡ, ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΌΠ΅Ρ Π³ΠΎΡΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠΈ ΠΏΠΎ ΠΈΡ
ΡΠΎΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΡ. Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΡΡ
ΠΌΠ΅Ρ Π³ΠΎΡΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠΈ Π² ΡΠ°ΠΌΠΊΠ°Ρ
Π‘ΠΠΠ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ΠΎ ΡΡΡΠ°Π½ΠΎΠ²ΠΈΡΡ Π½Π°Π»ΠΎΠ³ΠΎΠ²ΡΠ΅ ΠΏΡΠ΅ΡΠ΅ΡΠ΅Π½ΡΠΈΠΈ (ΠΏΠΎΠ½ΠΈΠΆΠ΅Π½Π½ΡΠ΅ Π½Π°Π»ΠΎΠ³ΠΎΠ²ΡΠ΅ ΡΡΠ°Π²ΠΊΠΈ, Π½Π°Π»ΠΎΠ³ΠΎΠ²ΡΠ΅ Π»ΡΠ³ΠΎΡΡ, Π½Π°Π»ΠΎΠ³ΠΎΠ²ΡΠ΅ Π²ΡΡΠ΅ΡΡ), Π° ΡΠ°ΠΊΠΆΠ΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΡ ΡΡΠΊΠΎΡΠ΅Π½Π½ΡΡ Π°ΠΌΠΎΡΡΠΈΠ·Π°ΡΠΈΡ ΠΎΡΠ½ΠΎΠ²Π½ΡΡ
ΡΡΠ΅Π΄ΡΡΠ². ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΡΠ΅ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠΈ ΡΠΎΠ·Π΄Π°ΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΡΡ ΠΎΡΠ½ΠΎΠ²Ρ ΠΎΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠ΅Π΄ΠΎΡΡΠ°Π²Π»Π΅Π½ΠΈΡ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΌΠ΅Ρ Π³ΠΎΡΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠΊΠΈ Π² ΡΠ°ΠΌΠΊΠ°Ρ
Π‘ΠΠΠ
Spatial beam self-cleaning and supercontinuum generation with Yb-doped multimode graded-index fiber taper based on accelerating self-imaging and dissipative landscape
We experimentally demonstrate spatial beam self-cleaning and supercontinuum generation in a tapered Ytterbium-doped multimode optical fiber with parabolic core refractive index profile when 1064β
nm pulsed beams propagate from wider (122β
Β΅m) into smaller (37β
Β΅m) diameter. In the passive mode, increasing the input beam peak power above 20β
kW leads to a bell-shaped output beam profile. In the active configuration, gain from the pump laser diode permits to combine beam self-cleaning with supercontinuum generation between 520-2600β
nm. By taper cut-back, we observed that the dissipative landscape, i.e., a non-monotonic variation of the average beam power along the MMF, leads to modal transitions of self-cleaned beams along the taper length
Dependence of the Energy Spectrum of UHE Cosmic Rays on the Latitude of an Extensive Air Shower Array
Several energy spectra of cosmic rays with energies E_0 \geq 10^17 eV
measured at the Yakutsk EAS, AGASA, Haverah Park, HiRes, Auger, and SUGAR
arrays are considered. It is shown that the fairly good mutual agreement of the
spectrum shapes can be achieved if the energy of each spectrum is multiplied by
a factor K specific for each spectrum. These factors exhibit a pronounced
dependence on the latitude of the above-mentioned arrays.Comment: 4 pages, 4 figure
The 1986?1989 ENSO cycle in a chemical climate model
International audienceA pronounced ENSO cycle occurred from 1986 to 1989, accompanied by distinct dynamical and chemical anomalies in the global troposphere and stratosphere. Reproducing these effects with current climate models not only provides a model test but also contributes to our still limited understanding of ENSO's effect on stratosphere-troposphere coupling. We performed several sets of ensemble simulations with a chemical climate model (SOCOL) forced with global sea surface temperatures. Results were compared with observations and with large-ensemble simulations performed with an atmospheric general circulation model (MRF9). We focus our analysis on the extratropical stratosphere and its coupling with the troposphere. In this context, the circulation over the North Atlantic sector is particularly important. Observed differences between the El NiΓ±o winter 1987 and the La NiΓ±a winter 1989 include a negative North Atlantic Oscillation index with corresponding changes in temperature and precipitation patterns, a weak polar vortex, a warm Arctic middle stratosphere, negative and positive total ozone anomalies in the tropics and at middle to high latitudes, respectively, as well as anomalous upward and poleward Eliassen-Palm (EP) flux in the midlatitude lower stratosphere. Most of the tropospheric features are well reproduced in the ensemble means in both models, though the amplitudes are underestimated. In the stratosphere, the SOCOL simulations compare well with observations with respect to zonal wind, temperature, EP flux, and ozone, but magnitudes are underestimated in the middle stratosphere. The polar vortex strength is well reproduced, but within-ensemble variability is too large for obtaining a significant signal in Arctic temperature and ozone. With respect to the mechanisms relating ENSO to stratospheric circulation, the results suggest that both, upward and poleward components of anomalous EP flux are important for obtaining the stratospheric signal and that an increase in strength of the Brewer-Dobson circulation is part of that signal
Stem cells application for the treatment of traumatic brain injury
Traumatic brain injury (TBI) is a global medical and socio-economic problem. Traumatic injuries of the skull and brain make up 30-40β% of all traumas and are the first in terms of mortality and disability among people of working age. High expectations for the treatment of TBI and its consequences are due to the use of stem cell (SCs) therapy. The present review examines the pathogenetic prerequisites for SCs application in TBI effects treatment: generalizes information about the primary and secondary changes in nerve tissue after TBI (cellular, tissue, organ, systemic level) and functional neurological disorders (physical, motor, cognitive, behavioral symptoms); emphasizes the impossibility of restoring neurological functions without restoring brain structures and functions. The paper proposes the main directions of application of SCs for the TBI effects treatment - stimulation of endogenous SCs, transplantation of exogenous SCs and a combination of these approaches. The sources and types of SCs considered for the restoration of the damaged organ and its functional parameters are characterized in detail: embryonic (ESCs), neurogenic (NSC/NPCs), stromal (SCs of bone marrow, adipose tissue, including mesenchymal (MSCs), hematopoietic (HSCs), umbilical cord blood SCs, induced pluripotent SCs (iPSCs). The results of preclinical studies of the different SCs types used in animals with TBI experimental models are summarized. The actual information regarding clinical trials on the safety and efficacy of the SCs application in the TBI effects treatment in the directions of endogenous SCs stimulation (drug administration, physical methods) and exogenous SCs transplantation (autologous SCs (bone marrow, adipose tissue) and allogeneic SCs (MSCs, bone marrow SCs, umbilical cord blood SCs) is analyzed. The gradual accumulation of clinical trial results will allow future meta-analytic studies and the development of certified standardized protocols for the treatment of TBI consequences using the benefits of SCs
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