One-dimensional multicomponent Fermi gas in a trap: quantum Monte Carlo study

One-dimensional world is very unusual as there is an interplay between quantum statistics and geometry, and a strong short-range repulsion between atoms mimics Fermi exclusion principle, fermionizing the system. Instead, a system with a large number of components with a single atom in each, on the opposite acquires many bosonic properties. We study the ground-state properties a multi-component Fermi gas trapped in a harmonic trap by fixed-node diffusion Monte Carlo method. We investigate how the energetic properties (energy, contact) and correlation functions (density profile and momentum distribution) evolve as the number of components is changed. It is shown that the system fermionizes in the limit of strong interactions. Analytical expression are derived in the limit of weak interactions within the local density approximation for arbitrary number of components and for one plus one particle using an exact solution.Comment: 15 pages, 5 figure

New light-times curve of eclipsing binary AM Leo

We present 72 photoelectric and CCD times of minima of eclipsing binary AM Leo obtained mainly during 1996-2017 at Kourovka Astronomical Observatory of the Ural Federal University in Russia. We obtained new values of period of 50.5 years and eccentricity of 0.28 of the orbit of the eclipsing pair around the mass center of the system AM Leo with the third body. These results have been received taking into account the times of minima taken from literature and obtained from JD⊙ = 2435570 to JD⊙ = 2457835. © Konkoly Observatory Budapest, 2017.This work was supported in part by the Ministry of Education and Science (the basic part of the State assignment, RK no. AAAA-A17-117030310283-7) and by the Act no. 211 of the Government of the Russian Federation, agreement 02.A03.21.0006

The TGF-beta — SMAD pathway is inactivated in cronic lymphocytic leukemia cells

Aim: To study the status of the tumor growth factor beta (TGFB) pathway in chronic lymphocytic leukemia (CLL) cells and to uncover molecular details underlying CLL cell genesis. Objects and Methods: The study was conducted on peripheral blood samples of patients with CLL using the following methods: RNA isolation, analysis of expression of transcription factors using RT2 profiler assay, bioinformatics analysis of publicly available data bases on expression. Results: We have shown that the TGFB — SMAD canonical pathway is not active in CLL cells. SMAD-responsive genes, such as BCL2L1 (BCL-XL), CCND2 (Cyclin D2), and MYC, are down-regulated in CLL cells compared with peripheral blood B cells of healthy donors. Conclusions: The TGFB-mediated signaling is not active in CLL cells due to low (or absent) expression of SMAD1, -4, -5, -9, and ATF-3. Expression and phosphorylation status of SMAD2 and -3 should be further elucidated in the future studies

To the question of training bachelors to digital education

The article presents the results of a survey on determining the degree of use of digital devices and various types of Internet content in everyday life and educational activities by bachelors of a pedagogical university; identified areas for the development of digital literacy students.В статье представлены результаты анкетирования по определению степени использования цифровых устройств и различных видов интернет-контента в повседневной жизни и учебной деятельности бакалаврами педагогического вуза

The TGF-beta — SMAD pathway is inactivated in cronic lymphocytic leukemia cells

Aim: To study the status of the tumor growth factor beta (TGFB) pathway in chronic lymphocytic leukemia (CLL) cells and to uncover molecular details underlying CLL cell genesis. Objects and Methods: The study was conducted on peripheral blood samples of patients with CLL using the following methods: RNA isolation, analysis of expression of transcription factors using RT2 profiler assay, bioinformatics analysis of publicly available data bases on expression. Results: We have shown that the TGFB — SMAD canonical pathway is not active in CLL cells. SMAD-responsive genes, such as BCL2L1 (BCL-XL), CCND2 (Cyclin D2), and MYC, are down-regulated in CLL cells compared with peripheral blood B cells of healthy donors. Conclusions: The TGFB-mediated signaling is not active in CLL cells due to low (or absent) expression of SMAD1, -4, -5, -9, and ATF-3. Expression and phosphorylation status of SMAD2 and -3 should be further elucidated in the future studies

Content of protein and glycoproteins, their components in the oral fluid in children with chronic gastritis, duodenitis

In the oral fl uid of children with chronic gastritis, duodenitis there is the increased protein content (up to 7.33±0.43 g/l) against the background of the decreasing level of glycoproteins (up to 0.03±0.01 mg/ml). Coeffi cient of ratio protein / glycoproteins in the oral fl uid is increased by a factor of 9510, which has shown the intensive decay of protein-carbohydrate complexes and the increasing content of the protein fragments. In the composition of glycoproteins there is the reduced amount of hexosamines (up to 0.23±0.01 mmol/l), against the background of the increasing sialic acids (up to 0.16±0.01 mmol/l) and fucose (up to 0.87±0.02 mmol/l). Coeffi cient of ratio of terminal and corpus monosaccharides in the glycoproteins of the oral fl uid in patients with chronic gastritis, duodenitis is increased by a factor of 2.41 and 3.34, as compared to the same values in the control group of children, which signifi cantly modifi es the functional properties of the protein-carbohydrate complexes

Computerized Neuropsychological Assessment in 6–9 Years-old Children

The article presents a new computer-based test battery of neuropsychological assessment in 6–9-year-old children. The battery consists of seven tests for assessing executive functions, functions of activation regulation, functions of visual-spatial information and auditory information processing. The following tests are describedin the article: the Dots task, two-colored Schulte–Gorbov tables, Corsi block span test and Understanding of Similar Sounding Words test. The battery is developed in the software platform ‘MSU-Practice’ (http://psychosoft.ru). The system allows researchers to conduct the tests, collect data and analyze them. In addition, it includes cloud service to support the collaboration of different research groups. A total of 21 preschoolers, 52 first-graders and 114 second-graders took part in a pilot study. All three groups of children took the four computer tests and went through a neuropsychological assessment adapted for children between the ages of 5 and 9. The correlation analysis showed consistency between the results of the computertests and the results of the neuropsychological assessments. This allowed us to conclude that the new computer methodology is sufficiently sensible and valid to assess different components of higher mental functions in children. Keywords: neuropsychology, higher mental functions, primary school children, cognitive functions, computer-based test

Processing and interpretation of gravimetric data based on «native» continuous wavelet transform

© SGEM2014 All Rights Reserved. In this study we present a method for interpretation of gravimetric data based on the socalled “native” wavelet basis. We show that this apporach has several distinct advantages over commonly used methods, including a simple way of obtaining formal solutions of the inverse problem, easy identification of the causative sources, and efficient search for solutions of the nonlinear inverse problem in the wavelet domain

“Native” wavelet transform for solution inverse problem of gravimetry on the spherical manifold

© SGEM2015. We show how the continuous wavelet transform with special basis, which we named the "native basis", can be used to analyze geopotential data obtained on the surface of a sphere. The offered method is applied to analyze of gravity anomalies and localize of causative sources of celestial bodies (Earth and Moon)