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The Bulletin of the Adyghe State University, the series “Natural-Mathematical and Technical Sciences” |
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#2 / 2012Problems of Human PhysiologyA.D. TsikunibZoological museum of Adyghe State University: 10 years of educational and scientific activity
MathematicsA.B. ShishkinIntegration on the focused set on a projection The paper contains bases of constructive theory of integration on a projection on to the partially oriented set in space R^n.
On a variation task of the theory of the multiplicative integral This paper considers the solution of a variation problem of the theory of the multiplicative integral.
PhysicsA.V. Kovalenko, A.A. Khromykh, M.K. Urtenov, D.K. MamiyModeling and the numerical analysis of the process of binary electrolyte transfer in the desalination channel of the electrodialytic device in the potentially static mode The paper discusses the modeling and the numerical analysis of the process of binary electrolyte transfer in the desalination channel of the electrodialytic device. The authors propose various mathematical models of ion transfer in the potentially static mode in the form of system of the quasilinear equations with private derivatives. Transition to a dimensionless kind is carried out and presence of some small parameter ε>0 is shown at the senior derivatives in the equations. If speed of electrolyte circulation through the desalination chamber is considerable there is one more small parameter λ>0. The special stretched system of coordinates is used for the numerical analysis. The basic laws of occurrence and development of a spatial charge in the desalination channel of electrodialytic device are revealed. Various asymptotic and numerical methods of the solution are proposed.
Designing and building resistance furnaces for the monocrystal growth device The paper discusses a method for calculating the temperature distribution along the length of resistance furnaces. The method has several advantages: it reduces the time to build a furnace, saves resources and leads to the desired result. Muffle material and heat insulation material are taken into account. A resistance furnace with a given temperature distribution was built based on the calculation.
Natural SciencesA.D. Tsikunib, B. Dzhrivakh, S.A. Tlekhuch, S.R. Kaytmesova, T.A. FilimonovaOptimization of the iodic status of an organism in the conditions of high power expenditures. «Iodine-preserving» diet The paper provides an «iodine-preserving» diet elaborated by the authors, which contains not only the optimum amount of iodine, but also nutrients, raising its bioavailability.
The functional and adaptive capabilities of young 10–15 year-old football and basketball players, depending on the somatotype This work addresses the questions of the functional state and adaptive capabilities of young athletes, depending on age, constitution type and training level in football and basketball training mode of child-youthful sports school of the Olympic reserve. The obtained results are of interest from the point of view of impact of sports training on the processes of growth, development and adaptation of an organism of young athletes of different somatotypes, as well as in terms of planning adequate training mode, taking into account regulatory and adaptive status of young athletes, in order to make an early forecast of overtraining and prevention of disadaptive states.
Assessment of functional condition of an organism of students working on computers This work examines influence of work on the computer on a functional condition of an organism of students. It has been established that the functional condition of the central nervous system and the visual analyzer change for the worse at the students working on computers in comparison to those who do not work on computers. The authors have revealed the dependence of the degree of fatigue upon the time of continuous work on computer.
The classification of the electrobiological activity produced by muscles when performing powerlifting squats Electromyogrames (EMG) were obtained for the leg, hip and back muscles during performing powerlifting squats. Their classification is given, on the basis of which the authors elaborated the model of the transformation of the electromyogram pattern when performing squats with different weights.
Intrapopulation and ecological-geographical variability of gentian Pyrenean (Northwestern Caucasus) The paper examines intra- and interpopulation variability of a gentian Pyrenean in Alpine and subalpine phytocenoses of the Northwest Caucasus. Based on the majority of dimensional signs and the number of metameres of a flower, the authors show that there is a differentiation of cenopopulations of this species from various phytocenopses. It is assumed that these signs are the most plastic and depend to a greater degree on influence of environment factors.
The relationship of indicators of heart rate variability and external respiration of athletes with different orientation of the training process This paper examines the effect of systematic athletic exercises on the functional state of cardiorespiratory system. The authors show the relationship of indicators of heart rate variability and external respiration in athletes with different orientation of the training process.
The dynamics of the statistical heart rate indices in the adolescents learning in the Physical Training Faculty The participants in this study (40 adolescents) were all students at a Faculty of Physical Training who were surveyed in the dynamics of the first and second year of training. The dynamics of heart rate statistics was studied in autumn (in the dynamics of the first year of training in semester 1 and at the beginning of the second year of training), as well as before and after examinations in the period of winter and summer examinations. Physiological mechanisms of adaptation of young men to training process at Faculty of Physical Training promote strengthening centralization of heart rate control only in reply to examination tension that occurs at the expense of reduction of a parasympathetic tone and increase of the adrenergetic influences, capable to provide short-term mobilization of additional energy resources.
The neurophysiological status and its relationship to a morphotype of sportsmen-track and field athletes This paper reports upon research on the neurophysiological status at sportsmen-track and field athletes. It is revealed that somatotypological features influence the character of display of the basic properties of nerv-ous system: lability, mobility, force and degree of balance of nervous processes. The obtained results are attractive for a choice of tactics and strategy of track and field athlete training, taking into account a current condition of nervous system.
Age dynamics of oxygen consumption at relative rest of persons with the various modes of impellent activity The level of energy potential of a biosystem can serve as a criterion for stability of an organism to a wide range of adverse effects. Increase in maximal oxygen consumption (VO2max) is possible only at application of great in volume and intensity physical activities. According to the theory of oxidative stress the increase in power loading can lead to accumulation of oxidative damage and to fast exhaustion of a biological resource of an organism. On the other hand, high energy expenditure during a working phase is accompanied by considerable economization of activity in a condition of relative rest, consequently, by decrease in intensity of free radical oxidation. In the present research, an attempt is undertaken to quantitatively assess a degree of this economization on the basis of indicators of the main exchange and oxygen consumption in a condition of relative rest at persons with high level of impellent activity.
Polymorphisms G197 and 197A of the pro-inflammatory IL-17A gene associated with cardiovascular diseases and malignant new growths of female reproductive organs at inhabitants of the Republic of Adygheya The distribution of polymorphisms G197/197A of the pro-inflammatory cytokine IL-17A gene is investigated by the SNP (single nucleotide polymorphism) method in ethnic groups (Russian and Adyghes) of the population of the Adygheya Republic: donors, patients with different variants and starting mechanisms of cardiovascular diseases and malignant new growths of female reproductive organs. The «normal» G197 allele IL-17A, which is most widespread in populations, is associated (Đ=0,011) with risk of development of peripheral atherosclerosis and tumoral progression at a cancer of a mammary gland (đ=0,026). Availability of polymorphism G197 of pro-inflammatory IL-17A can be used for inhabitants of the Adygheya Republic as a marker of system inflammatory reactions of the organism involved in pathogenesis of cardiovascular diseases and malignant new growths.
Reproduction of soil fertility depending on fertilizers and the vegetative remains in a crop rotation on the chernozem in a foothill zone of the Kabardino-Balkarian Republic The paper examines optimization of a food of crops and gives agrochemical substantiation of reproduction of chernozem fertility depending on types and doses of fertilizers, the root and superficial remains and on balance of humus in the soil.
Physiological assessment of fifth-former adaptation to learning activities on the basis of a vegetative component of heart rate variability This work studies adaptation of pupils to learning activity in the initial stage of training in the 5th form using the method of the mathematical analysis of heart rate variability. The authors reveal sexual distinctions of adaptation potentialities of an organism. It is shown that the main physiological mechanism of initial adaptation is the high tone of parasympathetic section of vegetative nervous system. The above-segmentary level of regulation serves as a marker of reserve possibilities of an organism in the considered age.
Dynamics of some indicators of interstitial space in patients with arterial hypertension, abdominal obesity and metabolic syndrome under the effect of reduced food This work provides surveillance data of persons with an arterial hypertension, abdominal obesity and metabolic syndrome. Among non-drug methods of rehabilitation the effective is a hypohigh-calorie diet which reduced the clinical-laboratory indicators and slowed down disease progressing.
Polymorphisms of angiotensinogen and receptor I of the angiotensinogen type in teenage groups Frequencies of Met235Thr and Thr174Met in the polymorphisms of a gene of AGT and A1166C of 2alleles of receptor I of the angiotensinogen-2 (AGT2R1) type associated with risk of development of cardiovascular diseases at the healthy surveyed teenagers living in Maikop (Adygheya Republic), are 0.410; 0.177; and 0.211, respectively. Frequency of Met235Thr in the polymorphisms of AGT gene exceeds similar indicators characteristic of the population in the Rostov region (0.179). No significant distinctions in frequency of Met235Thr of the polymorphisms of AGT gene in ethnic populations of the Adyghes, Russians and Armenians have been revealed.
Geographic and economic features of the dynamics and structure of unemployment in the Adygheya Republic This paper examines the contemporary problems of geography of unemployment within the limits of Adygheya Republic, as well as of population employment and labor market. The attention is focused on research of the number of the unemployed in the Republic, their stratification, allocation among the unemployed of a share of unemployed graduates of higher education institutions, possibilities of an employment service of the population in solving questions related to the hidden unemployment and providing services by the employment centers for youth employment.
Technical SciencesM.A. Kiryushkin, V.I. ChizhikovAnalysis of stages of system scaling This work examines the main stages of system scaling and presents reasons for realization of the system to a certain stage.
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