(Anti-)deuteron production in pp collisions at 1as=13TeV

The study of (anti-)deuteron production in pp collisions has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high-energy hadronic collisions. In this paper the production of (anti-)deuterons is studied as a function of the charged particle multiplicity in inelastic pp collisions at s=13 TeV using the ALICE experiment. Thanks to the large number of accumulated minimum bias events, it has been possible to measure (anti-)deuteron production in pp collisions up to the same charged particle multiplicity (d Nch/ d \u3b7 3c 26) as measured in p\u2013Pb collisions at similar centre-of-mass energies. Within the uncertainties, the deuteron yield in pp collisions resembles the one in p\u2013Pb interactions, suggesting a common formation mechanism behind the production of light nuclei in hadronic interactions. In this context the measurements are compared with the expectations of coalescence and statistical hadronisation models (SHM)

Multiplicity dependence of inclusive J/psi production at midrapidity in pp collisions at root s=13 TeV

Measurements of the inclusive J/psi yield as a function of charged-particle pseudorapidity density dN(ch)/d eta in pp collisions at root s = 13 TeV with ALICE at the LHC are reported. The J/psi meson yield is measured at midrapidity (vertical bar y vertical bar <0.9) in the dielectron channel, for events selected based on the charged-particle multiplicity at midrapidity (vertical bar eta vertical bar <1) and at forward rapidity (-3.7 <eta <-1.7 and 2.8 <eta <5.1); both observables are normalized to their corresponding averages in minimum bias events. The increase of the normalized J/psi yield with normalized dN(ch)/d eta is significantly stronger than linear and dependent on the transverse momentum. The data are compared to theoretical predictions, which describe the observed trends well, albeit not always quantitatively. (C) 2020 European Organization for Nuclear Research. Published by Elsevier B.V.Peer reviewe

Elliptic flow of charged particles at midrapidity relative to the spectator plane in Pb–Pb and Xe–Xe collisions

Measurements of the elliptic flow coefficient relative to the collision plane defined by the spectator neutrons v2{ SP} in collisions of Pb ions at center-of-mass energy per nucleon–nucleon pair √ 2.76 TeV and Xe ions at √ sNN = sNN =5.44 TeV are reported. The results are presented for charged particles produced at midrapidity as a function of centrality and transverse momentum for the 5–70% and 0.2–6 GeV/c ranges, respectively. The ratio between v2{ SP} and the elliptic flow coefficient relative to the participant plane v2{4}, estimated using four-particle correlations, deviates by up to 20% from unity depending on centrality. This observation differs strongly from the magnitude of the corresponding eccentricity ratios predicted by the TRENTo and the elliptic power models of initial state fluctuations that are tuned to describe the participant plane anisotropies. The differences can be interpreted as a decorrelation of the neutron spectator plane and the reaction plane because of fragmentation of the remnants from the colliding nuclei, which points to an incompleteness of current models describing the initial state fluctuations. A significant transverse momentum dependence of the ratio v2{ SP}/v2{4} is observed in all but the most central collisions, which may help to understand whether momentum anisotropies at low and intermediate transverse momentum have a common origin in initial state f luctuations. The ratios of v2{ SP} and v2{4} to the corresponding initial state eccentricities for Xe–Xe and Pb–Pb collisions at similar initial entropy density show a difference of (7.0 ±0.9)%with an additional variation of +1.8% when including RHIC data in the TRENTo parameter extraction. These observations provide new experimental constraints for viscous effects in the hydrodynamic modeling of the expanding quark–gluon plasma produced in heavy-ion collisions at the LHC

First measurement of Ωc0 production in pp collisions at s=13 TeV

The inclusive production of the charm–strange baryon 0 c is measured for the first time via its hadronic √ decay into −π+ at midrapidity (|y| &lt;0.5) in proton–proton (pp) collisions at the centre-of-mass energy s =13 TeV with the ALICE detector at the LHC. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 2 &lt; pT &lt; 12 GeV/c. The pT dependence of the 0 c-baryon production relative to the prompt D0-meson and to the prompt 0 c-baryon production is compared to various models that take different hadronisation mechanisms into consideration. In the measured pT interval, the ratio of the pT-integrated cross sections of 0 c and prompt + c baryons multiplied by the −π+ branching ratio is found to be larger by a factor of about 20 with a significance of about 4σ when compared to e+e− collisions

Tariffs Formation on oil transportation

Oil transportation via trunk pipelines is an important part of the oil industry's activity. The main instrument of tariff regulation is the method of tariffs formation. Three methods of tariffs formation such as the method of economically justified costs (the Cost plus method), the method of economically justified return on investment capital (the RAB method), and the method of tariffs indexation were considered

Prophylaxis of an acute vomiting reflex using orthopedic methods

With increased gag reflex to eliminate the irritant prosthesis is crucial is not the length of the base and close fitting and uniformity of immersion in a tissue prosthesis prosthetic bed. Based on our observations, we recommend that you use before removing the impressions of patients with an increased gag reflex nasal vasoconstrictor medications that have a positive impact on reducing the sensitivity of emetic receptors throa

Thermal stability of magnetic anisotropy of stress-annealed amorphous alloy Fe3Co67Cr3Si15B12

Thermal stability of induced magnetic anisotropy (IMA) was studied in a course of subsequent annealings without any load for stress-annealed Fe3Co67Cr3Si15B12 amorphous alloy. Dependence of IMA thermal stability on magnitude of IMA constant, a temperature and exposure of stress-annealing was investigated. the magnetic anisotropy induced at higher temperature is more stable because more long-range order and energy-taking processes take place at these temperatures

Intraovarian autoplasmotherapy in patients with diminished ovarian reserve

Objective. To evaluate the efficacy of Intraovarian autoplasmotherapy (platelet-rich plasma/PRP) in the activation of ovarian function in patients with diminished ovarian reserve and “poor” response in the in vitro fertilization (IVF) cycles, as well as its influence on the quality of life. Patients and methods. A total of 120 patients with diminished ovarian reserve and a history of IVF cycle failure who refused to use donor oocytes were included in the study. All patients underwent intraovarian PRP therapy based on the proprietary technology. The quality of life, the ovarian function, and the results of the embryo stage in the IVF cycle were monitored for 6 months. Results. The conducted study demonstrates a positive effect of intraovarian PRP therapy on the functional state of the ovaries and on the results of the embryo stage in IVF in the cohort of patients with diminished ovarian reserve and “poor” response in previous unsuccessful IVF cycles. The findings also indicate changes in the quality of life, an improvement in sexual function, and positive dynamics in the emotional state. Conclusion. Intraovarian PRP therapy allows patients with infertility and diminished ovarian reserve to avoid using donor oocytes and to obtain their own genetic material. This technology has a positive effect on the quality of life, having a certain anti-age effect in all groups of examined women, the duration of which has yet to be clarified. © 2021, Dynasty Publishing House. All rights reserved

Improving private sector and government partnership system to support small businesses in the service sector

The emergence of this form of partnership between the private sector and the state to support business, including services, dictated by the fact that the state does not always has a sufficient amount of available funds and workforce necessary for the implementation of infrastructure development projects, including small business support infrastructure. Therefore, the use of tools interaction between private business and the state of the development of infrastructural spheres of support of small business becomes more appropriate. At the same time, this trend is not enough studied by modern scholars, which causes the relevance of this study. This article aims to study the essence of the public-private partnership, its legal basis in the Russian Federation, the assessment of the level of development of the public-private partnerships in the regions. To investigate this issue theoretical and empirical research methods, techniques and economic-statistical factor analysis, economic and mathematical modeling, expert evaluation were used. In contrast to existing studies, the authors prove the necessity of the use of public-private institutions and municipal-private partnership in the development of small business support infrastructure in the regions. For this the authors developed a model of using public-private institutions and municipal-private partnerships for infrastructure development of small business support with the release of the stages of development and implementation of public-private project. © 2016 Rudenko et al