Search for the gamma-ray fluxes with energies above 10915) eV from various objects

Considerable interest has developed in the search for local sources of superhigh-energy gamma-rays. The experimental data obtained with the extensive air showers (EAS) array of the Moscow State University are analyzed with a view to searching for the superhigh-energy gamma-rays from various objects and regions of the Galaxy

Study of the time-differentiated particle flux density at various distances from EAS axis

The EAS time structure is studied using the enlarged EAS array of the Moscow State University. The time measurements are made using 22 scintillators which form 13 rectanges of 180x190 sq m size covering the entire array area. The array is triggered by a signal of 4-fold coincidences of the pulses from the detectors forming each of the rectangles. The data were obtained during 2200 hours of the array operation in 1984. A total of 816 showers, to which at least 14 of 22 scintillator detectors responded, were selected among all those detected. The coordinates of the EAS axis in the observation plane and the EAS sizes were determined by the maximum likelihood method using a computer on the assumption that the electron LDF is the NKG form. A total of 492 showers in the interval of EAS size Ne = 5x10 to the 6th power - 2x10 to the 8th power (N bar e = 1.7x 10 to the 7th power) with zenith angles theta or = 45 deg and axes within the array are analyzed

Universal mechanism of dissipation in Fermi superfluids at ultra low temperatures

We show that the vortex dynamics in Fermi superfluids at ultra-low temperatures is governed by the local heating of the vortex cores creating the heat flux carried by non-equilibrium quasiparticles emitted by moving vortices. This mechanism provides a universal zero temperature limit of dissipation in Fermi superfluids. For the typical experimental conditions realized by the turbulent motion of $^3$He-B the temperature of vortex cores is estimated to be of the order $0.2 T_c$. The dispersion of Kelvin waves is derived and the heat flow generated by Kelvin cascade is shown to have the value close to the experimentally observed.Comment: 4 pages, 1 figure, accepted to PR

Коррекция анемии у пациентов в пред- и послеоперационном периоде и у больных в критическом состоянии

The objective: to provide information and discuss the most justified and rational ways of anemia management in the perioperative period and in critically ill patients.Results: anemia as a syndrome associated with the perioperative period and critical conditions occurs in patients of the intensive care unit in 30–70% of cases. Currently, there is a clear trend towards restrictive blood transfusion tactics, the individualization of the anemic status of the patient, as well as the personalization of the treatment. Alternative approaches to blood transfusion are encouraged to improve the oxygen transport function of the blood, including the use of iron supplements in adult patients with hypoferric anemia and treatment with drugs that stimulate erythropoiesis. Цель: представить информацию и обсудить наиболее обоснованные и рациональные способы коррекции анемии в периоперационном периоде и у больных в критическом состоянии.Результаты: анемия как синдром, сопутствующий периоперационному периоду и критическим состояниям, встречается у пациентов отделения реанимации и интенсивной терапии в 30‒70% случаев. В настоящее время прослеживается четкая тенденция к ограничительной гемотрансфузионной тактике, индивидуализации «анемического статуса пациента», а также персонализации его лечения. Приветствуются альтернативные гемотрансфузиям подходы для улучшения кислородно-транспортной функции крови, в том числе использование препаратов железа у взрослых пациентов с железодефицитной анемией и лечение препаратами, стимулирующими эритропоэз

Topological superfluid 3^3He-B: fermion zero modes on interfaces and in the vortex core

Many quantum condensed matter systems are strongly correlated and strongly interacting fermionic systems, which cannot be treated perturbatively. However, topology allows us to determine generic features of their fermionic spectrum, which are robust to perturbation and interaction. We discuss the nodeless 3D system, such as superfluid $^3$He-B, vacuum of Dirac fermions, and relativistic singlet and triplet supercondutors which may arise in quark matter. The systems, which have nonzero value of topological invariant, have gapless fermions on the boundary and in the core of quantized vortices. We discuss the index theorem which relates fermion zero modes on vortices with the topological invariants in combined momentum and coordinate space.Comment: paper is prepared for Proceedings of the Workshop on Vortices, Superfluid Dynamics, and Quantum Turbulence held on 11-16 April 2010, Lammi, Finlan

Tunka Advanced Instrument for cosmic rays and Gamma Astronomy

The paper is a script of a lecture given at the ISAPP-Baikal summer school in 2018. The lecture gives an overview of the Tunka Advanced Instrument for cosmic rays and Gamma Astronomy (TAIGA) facility including historical introduction, description of existing and future setups, and outreach and open data activities.Comment: Lectures given at the ISAPP-Baikal Summer School 2018: Exploring the Universe through multiple messengers, 12-21 July 2018, Bol'shie Koty, Russi