352 research outputs found
Assessment of psycho-emotional state of student with Mitral regurgitation and possible ways of its pharmacological correction
The article presents the results of psycho-emotional state assessment a person with Mitral regurgitation when he lies using the device for the physiological parameter record, and the possible ways of its pharmacological correction are offere
Shock Breakout in Type II Plateau Supernovae: Prospects for High Redshift Supernova Surveys
Shock breakout is the brightest radiative phenomenon in a supernova (SN) but
is difficult to be observed owing to the short duration and X-ray/ultraviolet
(UV)-peaked spectra. After the first observation from the rising phase reported
in 2008, its observability at high redshift is attracting enormous attention.
We perform multigroup radiation hydrodynamics calculations of explosions for
evolutionary presupernova models with various main-sequence masses , metallicities , and explosion energies . We present multicolor
light curves of shock breakout in Type II plateau SNe, being the most frequent
core-collapse SNe, and predict apparent multicolor light curves of shock
breakout at various redshifts . We derive the observable SN rate and
reachable redshift as functions of filter and limiting magnitude by taking into account an initial mass function, cosmic star formation
history, intergalactic absorption, and host galaxy extinction. We propose a
realistic survey strategy optimized for shock breakout. For example, the
-band observable SN rate for mag is 3.3 SNe
degree day and a half of them locates at . It is clear
that the shock breakout is a beneficial clue to probe high- core-collapse
SNe. We also establish ways to identify shock breakout and constrain SN
properties from the observations of shock breakout, brightness, time scale, and
color. We emphasize that the multicolor observations in blue optical bands with
hour intervals, preferably over continuous nights, are essential
to efficiently detect, identify, and interpret shock breakout.Comment: 26 pages, 23 figures. Accepted for publication in the Astrophysical
Journal Supplement Serie
Soliton absorption spectroscopy
We analyze optical soliton propagation in the presence of weak absorption
lines with much narrower linewidths as compared to the soliton spectrum width
using the novel perturbation analysis technique based on an integral
representation in the spectral domain. The stable soliton acquires spectral
modulation that follows the associated index of refraction of the absorber. The
model can be applied to ordinary soliton propagation and to an absorber inside
a passively modelocked laser. In the latter case, a comparison with water vapor
absorption in a femtosecond Cr:ZnSe laser yields a very good agreement with
experiment. Compared to the conventional absorption measurement in a cell of
the same length, the signal is increased by an order of magnitude. The obtained
analytical expressions allow further improving of the sensitivity and
spectroscopic accuracy making the soliton absorption spectroscopy a promising
novel measurement technique.Comment: 9 pages, 7 figures
Circular Economy and Environmental Safety in a New Social Reality
The problem of ensuring environmental safety in our country in the conditions of increasing macroeconomic instability and risks in the sphere of national and world economy puts on the agenda the need to move to a new model of social and economic development - "circular economy"or "closed-loop economy". This model makes it possible to minimize the external negative effects on the part of economic entities and their impact on the environment and, conversely, the consequences of man-made externalities in the environment on the human. In this regard, the analysis and assessment of such a relationship between the economy and the environment, as well as the identification and assessment of these externalities, make it possible to formulate a number of recommendations to strengthen environmental safety and transition to a qualitatively new type of sustainable development. Β© Published under licence by IOP Publishing Ltd
Genetic and demographic characteristics of population of Central Russia
The paper presents data on the assessment of the size of elementary population among the residents of Central Russia. It has been defined that population-genetic study of the residents of Central Russia should be carried out at the level of raion, which is an elementary population. The size of elementary population should be taken into account when forming the samples for further genetic and epidemiological surveys of populatio
Population-genetic structure of the residents of Central Russia
In the territory of Central Russia, the presence of a certain, ordered system of grouping of elementary populations (raions) has been established, according to the data on the frequencies of surnames, using various methods of multivariate statistics (cluster analysis, multidimensional scaling, factor analysis). All the raions of the Belgorod oblast are combined into four clusters, corresponding to real geographical location of the populations: central cluster (12 raions), western (4 raions), south-eastern (3 raions), eastern (2 raions). Geographical distances between them play a significant role in the formation of genetic division between elementary population
Β«Green EconomyΒ», Nuclear Energy and "Natural Capitalism": Dialectics of Development
The article reveals the content of the concepts of "green economy"and "natural capitalism", the history of their appearance in science and the modern semantic context. The role of the idea of coevolution of the modern biosphere and the processes of transformation of traditional biogeocenoses into anthropobiogeocenoses with a decisive human influence in them is revealed. The risks of nuclear energy development and the state of the "green economy"are compared. The necessity of a more active formation of a new type of economy - an ecological economy that meets the tasks of reproduction of the natural environment is put forward and justified. The initial step on this path should be the adoption of the "Environmental Code"of the Russian Federation and the humanitarian reformatting of the thinking of the person based on ecological culture and ecological consciousness. Β© Published under licence by IOP Publishing Ltd
A clinical case of skin toxicity against the background of targeted therapy in a patient with neurofibromatosis
The purpose of study was to demonstrate a clinical case of skin toxicity against the background of targeted therapy in a patient with neurofibromatosis.Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ β Π΄Π΅ΠΌΠΎΠ½ΡΡΡΠ°ΡΠΈΡ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ»ΡΡΠ°Ρ ΠΊΠΎΠΆΠ½ΠΎΠΉ ΡΠΎΠΊΡΠΈΡΠ½ΠΎΡΡΠΈ Π½Π° ΡΠΎΠ½Π΅ ΡΠ°ΡΠ³Π΅ΡΠ½ΠΎΠΉ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ Ρ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ° Ρ Π½Π΅ΠΉΡΠΎΡΠΈΠ±ΡΠΎΠΌΠ°ΡΠΎΠ·ΠΎΠΌ
Foreign body granuloma as a complication of cosmetological procedures
The aim of the study β to demonstrate a clinical case of granulomas formation after introduction of a hyaluronic acid preparation.Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ β Π΄Π΅ΠΌΠΎΠ½ΡΡΡΠ°ΡΠΈΡ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ»ΡΡΠ°Ρ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π³ΡΠ°Π½ΡΠ»Π΅ΠΌΠ°ΡΠΎΠ·Π½ΠΎΠΈΜ ΡΠ΅Π°ΠΊΡΠΈΠΈ ΠΏΠΎΡΠ»Π΅ Π²Π²Π΅Π΄Π΅Π½ΠΈΡ ΠΏΡΠ΅ΠΏΠ°ΡΠ°ΡΠ° Π³ΠΈΠ°Π»ΡΡΠΎΠ½ΠΎΠ²ΠΎΠΈΜ ΠΊΠΈΡΠ»ΠΎΡΡ
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