Femtoscopy provides information on system size and its dynamics due to the effects of quantum statistics and final-state interactions. The results of femtoscopic correlations of different identified ...particles measured by ALICE in Pb–Pb collisions at sNN=2.76 TeV are presented. Hydrodynamic models predict a decrease of the radii with increasing pair transverse mass (mT) due to radial flow. Correlation measurements of heavy particles extend the range over which the transverse mass dependence of the source radii can be studied and thus can serve as a tool to learn about the dynamics of the deconfined medium. In particular, the measured three-dimensional radii of kaons are compared with a model where the hydrodynamic phase is succeeded by a hadronic rescattering phase and a purely hydrodynamical calculation. The latter predicts an approximate mT scaling of source radii obtained from pion and kaon correlations. This mT scaling appears to be broken in the data. The breaking of scaling is well reproduced by the full hydro-kinetic model calculations, thereby indicating the importance of the rescattering phase at LHC energies. The emission duration and the decoupling time of the system are also estimated for kaons and pions.
The LHC data on azimuthal anisotropy harmonics from PbPb collisions at center-of-mass energy 2.76 TeV per nucleon pair are analyzed and interpreted in the framework of the HYDJET++ model. The ...cross-talk of elliptic
v
2
and triangular
v
3
flow in the model generates both even and odd harmonics of higher order. Comparison with the experimental data shows that this mechanism is able to reproduce the
p
T
and centrality dependencies of quadrangular flow
v
4
, and also the basic trends for pentagonal
v
5
and hexagonal
v
6
flows.
The LHC data on event-by-event harmonic flow coefficients measured in PbPb collisions at center-of-mass energy 2.76 TeV per nucleon pair are analyzed and interpreted within the HYDJET
+
+
model. To ...compare the model results with the experimental data the unfolding procedure is employed. The essentially dynamical origin of the flow fluctuations in hydro-inspired freeze-out approach has been established. It is shown that the simple modification of the model via introducing the distribution over spatial anisotropy parameters permits HYDJET
+
+
to reproduce both elliptic and triangular flow fluctuations and related to it eccentricity fluctuations of the initial state at the LHC energy.
Abstract
As one of the leading segments of modern agriculture in the Russian Federation, the hop production is currently on the rise and upscales its activities every year. This is largely ...facilitated by strong financial government support. The purpose of this study is to examine the main theoretical and methodological aspects of organizing the appropriate production accounting to provide the common approaches to cost justification while filing of applications by hop farms for grants. To reveal the main scientific provisions, such techniques and methods as observation, induction and deduction, analysis and synthesis, observation, comparison and other were used. The findings of the study point to the fact that no updated regulatory framework for accounting of costs in hop farms is available, and the issue of the structure and content of the incurred cost information carrier has not been completely elaborated within the government grant issuing mechanism. A small number of international and Russian studies to determine the essential characteristics of hops as a biological asset has a negative impact on the arrangement of the accounting process. The article suggests the methodology for organizing cost accounting by the main agro-technological stages of hop management and cultivation.
The HYDJET
event generator is a phenomenological model of heavy-ion collisions that treats the collision process as a combination of a soft hydro-type state and a hard state resulting from hard ...parton scattering. On the one hand, it allows one to quickly simulate relativistic heavy-ion collisions, and on the other hand, it reproduces and describes a number of experimental phenomena in the soft and hard sector. It also allows you to study many features of the interaction as interplay of soft and hard processes. Here we present some selected results of recent studies. Basically, new results on the correlation of elliptical flows at small and large transverse momenta at LHC energies are described. Current studies of the charge balance function at LHC energies and the
A
-dependence of the flow in heavy-ion collisions are also discussed.
The main goal of heavy-ion collision measurements at NICA energies (sNN=4−11GeV) is to study the properties of the quark-gluon matter at high baryon densities. Femtoscopy allows one to probe spatial ...and temporal characteristics of the particle-emission process at the last stage of the collision evolution - kinetic freeze-out. In this proceedings, we present estimations of like-sign pion and kaon pair femtoscopic observables for NICA energies using the UrQMD model. The dependence of the femtoscopic radii on collision energy, centrality, and pair transverse momentum are shown.
Femtoscopy is an effective instrument to study the size and dynamics of the system created in heavy-ion collisions. In particular, a decreasing dependence of system size on increasing pair momentum ...and particle mass could be interpreted as an evidence of the strong collective flow. Such phenomena are naturally modeled by hydrodynamics. The large data sample collected in Pb-Pb collisions at sNN=2.76TeV by the ALICE collaboration enables femtoscopic measurements for pions and kaons. In this paper, the ALICE data are compared with calculations within the EPOS 3 hadronic interaction model, which is based on a (3+1)D viscous hydrodynamical evolution and employs the UrQMD cascade to describe the hadronic phase. The femtoscopic radii for pions and kaons are considered as a function of pair transverse momentum/mass and collision centrality. The obtained results show the importance of the hadronic rescattering phase at LHC energies.
In this paper, the study of the genesis of the Russian direction of information and analytical support of management processes of the modern economic entity was conducted. The symbiosis of accounting ...methodology, financial accounting and at the junction of such analytical disciplines as management and financial analysis there was an economic category "accounting and analytical support". It can be noted that the need for its occurrence is explained by the economic conditions of management in the Russian Federation and the national mentality of accountants, analysts, and auditors. Modern reality shows that this economic category is firmly established in the theoretical basis of Russian accounting thought and has received a new impetus to development in the digital economy. Special relevance of accounting and analytical support of management acquired in the agro-industrial complex of the Russian Federation.
A novel promising approach to the improvement of analytical properties of horseradish peroxidase based on its inclusion into self-assembled structures of chitosan is discussed. It is shown that the ...reasonable choice of a polyelectrolyte, a detailed investigation of its interaction with the enzyme and the conditions of the {peroxidase–polyelectrolyte} complex formation allow for stabilizing the biocatalyst in aqueous and aqueous-organic media without a substantial loss in its activity and developing corresponding analytical procedures and biosensors. The latter provides highly selective determination of a number of organic compounds and sensitive determination of heavy metal ions that becomes possible due to the specific interactions of the analytes with the polymer matrix. Besides, the application of the proposed analytical systems and biosensors provides the expansion of the range of the compounds, and poorly water soluble and slowly oxidized substrates of peroxidase as well, which could be determined and real samples which could be analyzed by enzymatic methods. Analytical performance of the developed spectrophotometric indicator procedures and biosensors based on the self-assembled complex {peroxidase–chitosan} is demonstrated in the determination of metal ions (Hg(II), Cd(II), and Pb(II)), phenothiazines (promazine, chloropromazine, and trifluoroperazine), phenolic compounds (phenol, hydroquinone, catechol, pyrogallol, quercetin, rutin, and esculetin), organic peroxides (tert-butyl peroxide, 2-butanone peroxide, and benzoyl peroxide) in various samples, including water-insoluble matrices.
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