572 research outputs found
Lateral-angular and temporal characteristics of EAS optical radiation
Characteristics of the direct and scattered components of electron-photon shower optical radiation for distances R 500 m from the shower core to a detector, allowing for the Cerenkov and fluorescent mechanism of photon generation are presented. The results of calculations are employed to clarify the techniques for determination of the shower parameters detected by both installations registering fluorescent light and those recording Cerenkov light
Influence of experimental metabolic syndrome on bioimpedance spectroscopy indicators of rat body
The objective of this experiment was to establish sex-related differences in the parameters of bioimpedance spectroscopy of the Wistar rat’s bodies in the experimental metabolic syndrome (endocrine-salt model).
Sexual dependencies of bioimpedance measurements in intact animals have been determined for the first time: males have higher amount of total fluid, but lower one of total fat. The intra/extracellular fluid balance in males is characterized with ratio 2:1, while in females is the other one - 1:1.
For the first time the formation of the metabolic syndrome has already been determined on the seventh day in females which lead to decreasing in the percentage of total fat and to changing of the intra / extracellular fluid balance to ‘male’ type - 2:1. The last one should be considered as a sign of intracellular hyperhydration. In males the examined parameters have been being within the control values ​​throughout 21 days of experiment
Alignment in Gamma-Hadron Families of Cosmic Rays
Alignment of main fluxes of energy in a target plane is found in families of
cosmic ray particles detected in deep lead X-ray chambers. The fraction of
events with alignment is unexpectedly large for families with high energy and
large number of hadrons. This can be considered as evidence for the existence
of coplanar scattering of secondary particles in interaction of particles with
superhigh energy, eV. Data analysis suggests that production of
most aligned groups occurs low above the chamber and is characterized by a
coplanar scattering and quasiscaling spectrum of secondaries in the
fragmentation region. The most elaborated hypothesis for explanation of
alignment is related to the quark-gluon string rupture. However, the problem of
theoretical interpretation of our results still remains open.Comment: 15 pages, 2 tables, 6 figures (not included), Stanford University
preprint SU-ITP-94-2
"Confinement Mechanism in Various Abelian Projections of Lattice Gluodynamics"
We show that the monopole confinement mechanism in lattice gluodynamics is a
particular feature of the maximal abelian projection. We give an explicit
example of the projection (the minimal abelian
projection), in which the confinement is due to topological objects other than
monopoles. We perform analytical and numerical study of the loop expansion of
the Faddeev--Popov determinant for the maximal and the minimal abelian
projections, and discuss the fundamental modular region for these projections.Comment: 16 pages (LaTeX) and 3 figures, report ITEP-94-6
Analytical-numerical methods of calculations of energy and three-dimensional particle distributions in electromagnetic cascades
Analytical and numerical methods of calculation of the energy and three dimensional EPS characteristics are reported. The angular and lateral functions of electrons in EPS have been obtained by the Landau and small angle approximations A and B and compared with earlier data. A numerical method of solution of cascade equations for the EPS distribution function moments has been constructed. Considering the equilibrium rms angle as an example, errors appearing when approximating the elementary process cross sections by their asymptotic expressions are analyzed
Abelian Monopoles and Action Density in SU(2) Gluodynamics on the Lattice
We show that the extended Abelian magnetic monopoles in the Maximal Abelian
projection of lattice SU(2) gluodynamics are locally correlated with the
magnetic and the electric parts of the SU(2) action density. These correlations
are observed in the confined and in the deconfined phases.Comment: 11 pages, LaTeX2e, 5 figures, uses epsf.sty; revision: Introduction
is extended and a few references are adde
Anatomy of the lattice magnetic monopoles
We study the Abelian and non-Abelian action densitynear the monopole in the
maximal Abelian gauge of SU(2) lattice gauge theory. We find that the
non-Abelian action density near the monopoles belonging to the percolating
cluster decreases when we approach the monopole center. Our estimate of the
monopole radius is R_mon ~ 0.04 fm.Comment: 9 pp., Latex2e, 2 figure (epsfig), published versio
The string tension in the maximally Abelian gauge after smoothing
We apply smoothing to SU(2) lattice field configurations in 3+1 dimensions
before fixing to the maximally Abelian gauge. The Abelian projected string
tension is shown to be stable under this, whilst the monopole string tension
declines by O(30%). Blocking of the SU(2) fields reduces this effect, but the
use of extended monopole definitions does not. We discuss these results in the
context of additional confining excitations in the U(1) vacuum.Comment: LATTICE98(confine
ONTOLOGICAL AND SOCIO-CULTURAL FOUNDATIONS OF THE INTER-GENERATED DISCOURSE IN THE MODERN INFORMATION SOCIETY
Purpose of the study: The article is devoted to understanding the problems of intergenerational discourse and its transformation in ontological and sociocultural reality. The paper substantiates the need to maintain the mechanism of accumulation and reproduction of the experience of ancestors. It is shown that the violation of the transfer of knowledge and traditions leads to the distortion or disappearance of universal cultural codes.
Methodology: In this article, cultural, demographic, and psychological approaches are used to study the ontological and sociocultural foundations of intergenerational discourse. It is necessary to show the influence of historical and socio-cultural transformations on the characteristics of interaction between generations, to determine the form of transfer and assimilation of experience within the family, to demonstrate the socially significant consequences of the demographic revolution in the modern information society.
Main Findings: Having outlined only a few reasons for the intergenerational discourse in the field of translation of sociocultural experience, it can be noted that their combination forms the layer of human life in which historically determined values and ideals of human society are realized, methods of accumulation and transfer of experience that are unique for each historical era, new methods communications.
Applications of this study: Research results can be applied in the course of social psychology (today, young people are literally imposed a radical cultural gap with previous generations), social philosophy, cultural studies (the form of transfer of experience within the family) and even demography (large-scale changes in human society, with the destruction of human social instincts).
Novelty/Originality of this study: As the initial task of the study, it is supposed to identify historical and sociocultural changes in the field of translation and appropriation of experience, to conduct a cultural analysis that gives a clear idea of the evolution of the methods of interaction between generations. An interdisciplinary approach involves a wider coverage of existing concepts and shows that the patterns of development of human society cannot be reduced only to biological, economic or socio-cultural patterns
Analysis of molecular mechanisms of the development of experimental diabetes in Wistar rats under conditions of intermittent hypoxia
There is strong evidence that hypoxic training, within the context of diabetes, constitutes a specialized form of exercise performed under conditions of intermittent hypoxia. This approach holds promise for effectively managing and enhancing diabetes outcomes, as it has the potential to influence metabolism and physiological processes within the body significantly. The key elements of hypoxic training in diabetes encompass activities geared toward activating metabolic pathways, enhancing mitochondrial function, and regulating blood glucose levels. Such interventions can potentially lead to improvements in insulin resistance, a reduction in glycemia, and an overall enhancement of cardiorespiratory function. Hypoxic training achieves these benefits by heightening insulin sensitivity and reducing blood glucose levels, which can be particularly advantageous for individuals with diabetes.
The aim of the work is to determine changes in the expression of genes associated with the course of diabetes under conditions of exposure to intermittent hypoxia in pancreatic tissue samples of Wistar rats.
Materials and methods. Analysis of gene expression was used by the polymerase chain reaction method with reverse transcription in real-time using the RT2 Profilerâ„¢ PCR Array Rat Diabetes kit (QIAGEN, Germany), where the pancreas of experimental animals was studied.
Results. According to the results of the PCR study of animals with experimental diabetes and the influence of hypoxic training on its course, the activity of the studied genes can be divided as follows: genes with low expression compared to the control group of animals, where ∆∆Cт <30 (Ace; Cd28; Ctla4; Dusp4 ; Enpp1; Foxp3; G6pc; Gcgr; Glp1r; Gpd1; Gsk3b; Hmox1; Ide; Ikbkb; Il10; Il6; Ins1; Nfkb1; Nkx2-1; Parp1; Pdx1; Pik3cd; Pik3r1; Ppargc1a; Ptpn1; Rab4a; Retn; Slc14a2 ; Snap25; Sod2; Stx4; Stxbp1; Stxbp2; Tnf; Tnfrsf1a; Tnfrsf1b; Ucp2; Vamp2; Vegfa); genes in which no significant changes were detected in the samples in relation to the control group (Acly; Adra1a; Adrb3; Agt; Akt2; Aqp2; Ccl5; Ccr2; Ceacam1; Cebpa; Dpp4; Fbp1; Foxc2; Foxg1; Gcg; Gck; Hnf1b; Hnf4a ; Icam1; Ifng; Igfbp5; Il12b; Il4r; Inppl1; Irs1; Irs2; Mapk14; Mapk8; Neurod1; Nos3; Nrf1; Nsf; Ppara; Pparg; Pygl; Sell; Serpine1; Slc2a4; Snap23; Srebf1; Stxbp4; Tgfb1; Trib3 ; Vamp3; Vapa); there are no genes with high expression compared to the control group.
Conclusions. The Nkx2-1 genes, Pik3r1, and Slc14a2 in rats subjected to experimental diabetes displayed notably reduced protein expression activity. Hypoxic training demonstrated an impact on mitigating the expression of the Nkx2-1 protein, which suggests that it might affect the mitochondrial muscle respiratory chain, modulate insulin signaling, and potentially rectify molecular deficiencies associated with diabetic nephropathy. Expression of Dpp4 genes, Gck, Ifng, Mapk8, Nsf and Sell in rats with experimental diabetes and the effect of hypoxic training on it were reduced to the level of control (intact) rats. As a result of the normalization of Dpp4 gene expression, Gck, Ifng, Mapk8, Nsf and Sell may be the influence of the effects of hypoxic training on molecular mechanisms of regulation of hormones and signals related to metabolism and the endocrine system, effects on the immune system and inflammatory processes, as well as insulin resistance
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