bluuebunny/crossref_metadata_2025 huggingface dataset:
reinvenção do paternalismo: a Companhia Paulista de Estradas de Ferro entre as décadas de 1920 e 1940
Authors: Inoue Luciana Massami , Grandi Guilherme
Published: October 2020

Analisa-se neste artigo a estratégia empresarial da Companhia Paulista de reinventar relações paternalistas de produção no âmbito da atividade ferroviária em São Paulo entre os anos 1920 e 1940. Responsáveis por instituírem uma série de instrumentos de controle sobre o trabalho em escala industrial, as companhias de estradas de ferro exerceram influência decisiva sobre as relações de trabalho, tanto por meio de suas atividades de operação do serviço de transporte quanto de manutenção do material ferroviário realizado nas oficinas de construção e reparo. Dentre os instrumentos capazes de manter a lógica paternalista das relações de produção no setor ferroviário, as vilas operárias constituem um dos mais efetivos no controle do capital sobre a mão de obra, em virtude do impacto causado sobre a vida privada e familiar dos ferroviários.
On the property of Kelley for Hausdorff continua
Authors: Chacón Mauricio , López María de J.
Published: October 2020

We introduce the conceptsHausdorff maximal limit continuumandHausdorff strong maximal limit continuum, for Hausdorff continua; thesedefinitions extend the concepts of maximal limit continuum and strong max-imal limit continuum, respectiveley, introduced by J. J. Charatonik and W.J. Charatonik in 1998 for metric continua [1, Definitions 2.2and 2.3]. Weshow that in metric continua, being a maximal limit continuum is equivalentto being a Hausdorff maximal limit continuum. We also show that in metriccontinua, being a strong maximal limit continuum implies being a Hausdorffstrong maximal limit continuum. Finally, we show an equivalence of havingthe property of Kelley, in terms of these new definitions, whose analog versionfor metric continua was given by J. J. Charatonik and W. J. Charatonik.
INVESTIGATION OF HYDRAULIC AND VIBROACOUSTIC CHARACTERISTICS OF A PERSPECTIVE VALVE WITH THE WORKING BODY AS A ELASTIC TUBE ELEMENT
Authors: Romashov N N , Ermilov M A , Ermilova E N , Vidyaskina A N
Published: October 2020

The article deals with the design of a perspective throttle valve with an elastic tubular element designed to reduce the vibration and noise of hydraulic systems, which are subject to increased requirements for vibro-acoustic characteristics. The analysis of known similar devices is carried out and the design of the valve-throttle is proved. A detailed analysis of the deformed state of the elastic tubular element is performed and the relationship between the deformations of this element and the hydraulic parameters of the working medium in the flowing part of the valve is shown. The experimental flow characteristics of the valve under study are analyzed, the analysis of which has made it possible to identify the parts of the characteristics at which the constant flow rate remains constant when the pressure drop across the valve changes. The substantiation of this feature of the hydraulic characteristics of a valve with an elastic element is given. The ways of further research directions of the prospective valve are shown.
EXPERIMENTAL ESTIMATION OF ACOUSTIC EFFICIENCY OF APPLICATION OF POLYMERIC MATERIALS IN THE PUMP DESIGN
Authors: Rekadze Pavel D , Rodionov Leonid V
Published: October 2020

The paper describes measures to reduce the level of acoustic emittion of a low-gear external gear pump. On the basis of the experiment on a bench installation, the acoustic efficiency using rotors were made from PEEK material in the design of a gear pump was evaluated when shaft speed was of 1000 ... 2500 rpm and a discharge pressure of 3 ... 12 bar. For comparison, the article presents the acoustic efficiency by the relative difference of the acoustic emittion of the pump with configuration of the steel-steel and steel-PEEK rotors. It also provides an overview of methods for reducing mechanical noise in gears, damping of modern structural polymeric materials based on polyamide, polyacetal, polyphenylenesulfide and polyetheretherketone in comparison with traditional engineering materials - steel, aluminum, gray cast iron is estimated. Recommendations for using of polymeric materials in the design of the pump are proposed.
DEVELOPMENT OF A TEST BENCH FOR TESTING THE UNDERWATER ROBOT CONTROL SYSTEM WITH VARIABLE GEOMETRY OF THE BODY
Authors: Galushko I D , Salmina V A , Makaryants G M
Published: October 2020

For underwater robots in the past three decades, the problem of energy efficiency and acoustic noiselessness has arisen sharply. The solution of these problems is inextricably linked with the solution of the problems of dynamics and vibroacoustics arising in the flow of a liquid under the flow of underwater bodies. These problems include the problem of the pressure pulsations occurrence and velocity distributed over the surface of the object, as well as noise and vibrations caused by these pulsations. To create energy-efficient and low-noise underwater robots, it is necessary to create methods for influencing the structure of wall currents and the shape of the aerodynamic surfaces of the robot in order to reduce its surface friction, as well as impedance. In this paper, we consider the development of an experimental bench for testing the main executive systems of an underwater robot with an anisotropic hull, including a buoyancy variation system, a trim and roll change system, and a hull geometry changing system.
MODELING OF CONTROL PROCESSES, STABILITY AND STABILIZATION OF SYSTEMS WITH PROGRAM CONSTRAINTS
Authors: Abramov N.V. , Mukharlyamov R.G.
Published: October 2020

Results of researches on modeling of dynamics of difficult systems containing different physical elements, solving dynamics problems and control of a rigidbody and robotics systems are stated. Necessary conditions for stability of decisions of dynamics equations are defined, and the algorithm of the constraintsperturbations equations construction, guaranteeing constraint stabilization is offered at the numerical solution. Some results of the applied problems solutionillustrate efficiency of the described methods
THE POINT SPREAD FUNCTION OF A FOUR-WAVE CONVERTER IN A RESONANT MEDIUM WITH ALLOWANCE FOR PUMP WAVE DIVERGENCE
Authors: Akimov A.A. , Vorobeva E.V. , Ivakhnik V.V.
Published: October 2020

An expression for point spread function has been obtained for a four-waveconverter in resonant medium modelled by four-level energy scheme. The dependences of point spread function width from pumping wave intensity and resonantmedium parameters have been found.
QUANTUM THEORY OF SPONTANEOUS SCATTERING OF LIGHT AND COHERENT STATES OF THREE-DIMENSIONAL LORENTZ GROUP
Authors: Gorokhov A.V. , Umov D.I.
Published: October 2020

The work is devoted to applications of group-theoretic coherent states todescribe the nonlinear optical effects. Important in modern quantum informationprocess of parametric down conversion is studied. It is shown that the useof superpositions of coherent states of SU(1; 1) allows to increase the squeezingof generated photon pairs.
TO THE QUESTION ON DISTRIBUTION GROUND COVER LICHEN IN THE COMMUNITY STEPPE
Authors: Varaksina V.N.
Published: October 2020

Solonetz meadow and artificial pinery ground cover lichen were explored indetail. In artificial pinery we have found Cladonia fimbriata, C. carioza, C. cornuta, C. coniocraea. In solonetz meadow we have discovered Endocarpon pussilum, Colemma sp., Corricularia sp., Peltigera lepidophora, Peltigera didactyla,C. fimbriata, C. carioza. We revealed 10 lichen sinuses.
BLOCK FRAMES IN THE ℓ2 SPACE
Authors: Likhobabenko M.A.
Published: October 2020

BLOCK FRAMES IN THE  ℓ2 SPACE
THE OPTIMAL EXPLUATATION OF DOUBLE AGE BIOLOGICAL POPULATION
Authors: Razzhevaikin V.N. , Yusufov A.T.
Published: October 2020

The problem of the optimal requisitioning of crop or biomass is explored.Methods of optimal decision making based on estimations of observable variablesare shown. Methods of construction of phase paths for optimal solutions in amost typical cases are set forth.
THE EVOLUTION OF LIMITS OF MAXIMAL MEANS FOR PERIODIC FUNCTIONS
Authors: Filatov O.P.
Published: October 2020

For the periodic function depending on the time and base variables anddifferential inclusion with constant right hand the two-sided estimates of thelimit of maximal mean is established. The existence of the theorem of limit ofmaximal mean is proved.
SYNTHESIS OF 1,2;3,4-DI-O-ISOPROPYLIDENE-6- O-[4-(1H-AZOL-1-YLMETHYL) PHENYL]- ¯-D-GALACTOPYRANOSE AND 1,2,3,4-TETRA-O-ACETYL-6- O-[4-(1H-AZOL-1- YLMETHYL)PHENYL]-¯-D-GLUCOPYRANOSE
Authors: Belousova Z.P. , Purygin P.P. , Tyurin A.P.
Published: October 2020

Derivatives of D-galactose and D-glucose substituted for the primary hydroxyl group, which contain an aglycone azolylmethylphenyl fragments (for imidazole, 1,2,4-triazole, benzimidazole and benzotriazole) has been synthesized. Toprotect the secondary hydroxyl groups of monosaccharides acetyl and isopropylidene groups were used.
DETERMINATION OF THE CONTENT OF HEAVY METALS IN LIQUID PHASE OF SNOW BY X-RAY FLORESCENSE METHOD
Authors: Garipova S.A. , Lobachev A.L. , Lobacheva I.V. , Revinskaja E.V.
Published: October 2020

The possibility of determining the total content of heavy metals in the liquid phase of snow was researched by X-ray fluorescence analysis with preconcentra tion of elements determined by sorption DETATA filters. Optimal conditions for the analysis, providing a minimum error of determination have been chosen and justified. The contribution was made by the stage of concentration in the overall error of the method. A pollution monitoring of snow cover in the five districts of Samara was carried out.
DATA ABOUT MORPHOLOGY AND BIOLOGY OF BENTOPHILUS STELLATUS (SAUVAGE, 1874) OF KUIBYSHEV RESERVOIR
Authors: Shemonaev E.V. , Kirilenko E.V.
Published: October 2020

According to the data received in 2003–2004 years results of morphology andreproduction characteristics of Bentophilus Stellatus from Ulyanovsk stretch ofKuibyshev Reservoir are given, size-age structure, qualitative and quantitativefood composition are considered.
ABOUT THE METHOD OF TRACES OF RESOLVENTS CALCULATED PRECISELY
Authors: Maleko E.M.
Published: October 2020

In the article it is ascertained that there are some methods of calculation of eigenvalues of ordinary boundary problems for the equations of mathematicalphysics. If the positive degree of a resolvent is the kernel operator this can takeadvantage at calculation of a spectrum of a boundary problem. It is mentionedthat similar results are reached by A.A. Dorodnitsyn
MODELING OF DOUBLY PERIODIC SYSTEM OF PRODUCING WELLS. 2. PRODUCTIVITY INDEX
Authors: Astafiev V.I. , Roters P.V.
Published: October 2020

The question of productivity of doubly periodic systems of production wells is considered. Using the idealized production regime with a constant flow rate the analytical representation for the productivity index (PI) of the well was obtained and values depending on the drainage shapes were analyzed. Also an analytic representation for the Dietz's shape factor, which agrees with numerical calculations by the method of imaginary producing wells was obtained.
ANATOMO-HISTOLOGICAL RESEARCH OF LEAFLETS OF DIFFICULT SHEET HEDYSARUM GRANDIFLORUM PALL
Authors: Popova I.A. , Plaksina T.I. , Ryzhov Y.M. , Tarasenko L.V.
Published: October 2020

There were studied microscopical constitution features of the compound leaf leaflets of a large-flowered tick trefoil Hedysarum grandiflorum Pall. that was gathered in Kinel district of the Samara region, in 2,5 km to the south - east from the village of Preobrazhenka, in June, 2009. The result of the survey helped to confirm, specify and enlarge information about morphological and histological characteristics of the leaflet of a compound leaf one of the genus Hedysarum family.
LIVER FAT DYNAMICS OF AMUR SLEEPER PERCCOTTUS GLENII DYBOWSKI, 1877
Authors: Shemonaev E.V. , Kirilenko E.V.
Published: October 2020

According to the materials received in 2007 and 2009 years, the data on liver fat reserve dynamics of Amur sleeper in concordance with their age, sex and maturity stage throughout the vegetation period is given.
N-ORDER MOMENT FUNCTION FOR THE SOLUTION OF THE CAUCHY PROBLEM FOR DIFFUSION EQUATION WITH RANDOM COEFFICIENTS
Authors: Besedina T.V.
Published: October 2020

Formula for n-order moment function for the solution of the Cauchy problem for three-dimensional diffusion equation with random coefficients and random initial condition is derived.
LIMIT THEOREM FOR INDEPENDENCE TRANSFORMATIONS COPULAS OF STUDENT'S t-DISTRIBUTION
Authors: Savinov E.A.
Published: October 2020

In the paper we study copulas obtained as a result of independence transformation of random vectors with Student's t-distribution. For the triangular scheme of dependent r.v. connected by such IT-copulas central limit theorem is proved. In addition, it is shown that two-dimensional IT-copula of Cauchy distribution is not associated.
A BOUNDARY VALUE PROBLEM FOR DEGENERATIVE SYSTEMOFEQUATIONS OFBITSADZE – YANUSHAUSKAS
Authors: Abdrakhmanov I.M. , Abdrakhmanova R.P.
Published: October 2020

In the article, a boundary value problem for a singular many-dimensional system of elliptic type equations in half-space is considered.
ORDER REDUCTION OF OPTIMAL ESTIMATION PROBLEM FOR LANGEVIN EQUATION
Authors: Osintsev M.S.
Published: October 2020

The question under discussion in this paper is the optimal estimation for singular perturbed Langevin equation. On the basis of assumptions about parameters and conditions where the movement is performed, we choose three cases which have curtain peculiarities during the reduction of the optimal estimation problem. For order reduction task the theoretical method of integral manifolds is used. It allows to get the solution of Riccati equations for covariance matrix of the ﬁlter and build the corrected Kalman–Bucy ﬁlter of a lower dimension
ABOUT ONE PROBLEM OF THE APPROXIMATION THEORY
Authors: Abakumov Yu.G. , Verhoturova M.A. , Kogan E.S.
Published: October 2020

In the given article the solution of the problem of ﬁnding of accurate constants by methods of summation of Fourier series is considered. The number of results belonging to the constants , the existence of parameters are also set forth.
RADEMACHER CHAOSES AND BERNOULLI POLYNOMIALS
Authors: Sukhanov R.S.
Published: October 2020

In this paper we prove that any Bernoulli polynomial of even (odd) order is an absolutely convergent series of functions from some Rademacher chaoses, each of them is of even (odd) order
INVERTEBRATES IN THE ECOSYSTEM OF POND ON AMINEVA STREET IN THE SAMARA CITY IN 2010
Authors: Vasin A.E. , Gherasimov Y.L. , Djuzhaeva I.V. , Satchkova Y.V. , Selezneva E.S.
Published: October 2020

Species composition and seasonal dynamics of density and biomass of the population of rotifer and other invertebrates in the small urban pond were investigated. The list of met rotifer species is quoted. It is found, that Brachionidae prevaile in species diversity and abundance.
FUNDAMENTAL AND APPLIED INVESTIGATIONS – FOUNDATION OF INNOVATIVE COSMIC TECHNOLOGIES
Authors: Leonovich G.I. , Krutov A.F. , Iscolnyy B.B.
Published: October 2020

This article describes the process of innovative technologies production and its connection with fundamental scientific research. The structure of fundamental, look-ahead and searching investigations is considered here. The cosmic sector is characterized to be one of the most important factors in the technological progress. The special attention is given to the cooperation of Samara State University and the «CSKB–Progress». Some innovative investigations, headed by N.V. Latukhina, A.V. Bulanova, A.N. Komov, are explicitly discussed in the article.
ABOUT A TRANSFORMATION OF SCHWARZ PROBLEM
Authors: Nikolaev V.G.
Published: October 2020

We consider the Schwarz problem for vector-valued functions analytic according to Douglis. We prove that under certain conditions on the matrix this problem is reduced to the Dirichlet problem for some equivalent system of second-order PDEs. The reversebility of transformations is proved, and on that ground the theorem of uniqueness is established. A special case when reduction is impossible is also viewed. The examples are given.
ON REGULIRATION MULTIPLE EIGENVALUE BY REDUCTION PSEUDOPERTURBATION METHODS
Authors: Rakhimov D.G.
Published: October 2020

On the base of the bifurcation theory methods it is considered the problem of the retaining multiple eigenvalues and relevant eigenvectors and roots elements. An approch is suggested which allows reduce algebraic multiple to unit, that is reduce the problem of the retaining multiple eigenvalues to simple. For construction iterated process applied pseudoperturbation methods.
THE SPACES THAT CONTAIN MULTIPLICATIVE ETA-FUNCTIONS
Authors: Voskresenskaya G.V.
Published: October 2020

In the article westudythestructureofthespacesofmodularformsthat containthemultiplicativeeta-functions.We find dimensionsandbasises.Wealso studythebehaviorofthefunctionsincusps.
EXPLICIT SOLUTION OF THE MIXED PROBLEM IN ANISOTROPIC SEMISPACE WITH BRIGHTLY EXPRESSED VERTICAL PERMEABILITY FOR BARENBLATT–ZHELTOV–KOCHINA EQUATION
Authors: Umarov Kh.G.
Published: October 2020

For Barenblatt–Zheltov–Kochina model presentation of ﬁltering of liquids in ﬁssured-porous rocks the explicit solution of the mixed problem in anisotropic semispace with brightly expressed vertical permeability is found by reduction of the considered problem of ﬁltering to the solution of the abstract initial boundary-value problem in Banach space.
ENTANGLEMENT OF TWO DIPOLE-COUPLED ATOMS INTERACTING WITH TWO-MODE THERMAL FIELD IN THE CAVITY WITH HIGH TEMPERATURE
Authors: Bashkirov E.K. , Mastygin M.S.
Published: October 2020

The entanglement of two dipole-coupled atoms with nondegenerate two-photon transitions interacting with two-mode field in lossless cavity has been investigated. The possibility of considerable growth of atomic entanglement is shown in the case of great mean values of thermal photons.
MONTE-CARLO SIMULATIONS OF PHASE TRANSITIONS IN THE TWO-DIMENSIONAL ISING MODEL WITH LONG-RANGE CORRELATIONS
Authors: Biryukov A.A. , Degtyareva Y.V. , Shleenkov M.A.
Published: October 2020

In this article phase transitions in the modified two-dimensional Ising model with long-range correlations investigated. This model was studied with Monte-Carlo method and Metropolis algorithm. Critical temperature increase is shown in such model.
FLORISTIC STRUCTURE OF WESTERN PARTS OF THE SOKOLI HILLS
Authors: Makarova Yu.V. , Prokhorova N.V. , Golovlyov A.A. , Kulikova M.V.
Published: October 2020

Features of floristic structure of the Sokoli Hills are considered. In the western parts of the Sokoli Hills 208 species of vascular plants, including 155 genera, 54 families, 6 classes and 4 sections were exposed.
SIMULATION OF TWO-DIMENSIONAL ONE-PHASE TRACER FLOW WITH THE USE OF CHROMATOGRAPHIC PLATE THEORY
Authors: Kudryashov S.Y. , Onuchak L.A. , Panarin D.A.
Published: October 2020

Generalization of chromatographic plate theory in case of two-dimensional non-sorbing tracer flow in a homogeneous porous media of uniform thickness with equal debit injection and producing wells are considered. It is shown that in this approach approximate calculation of tracer concentration at different times in producing well, and at a fixed time at various porous media points can be carried out.
OIL IDENTIFICATION ON SET OF PHYSICAL AND CHEMICAL INDICATORS OF QUALITY
Authors: Lobachev A.L. , Fomina N.V. , Lobacheva I.V. , Revinskaya E.V.
Published: October 2020

Approaches to identification of materials, based on component-wise analysis that is applicable only to rather simple materials, when probably complete division and further identification of individual components of a mix are shined. The system of identification of oil on the basis of determination of set of physical and chemical indicators of quality of oil according to GOST 51851-2002 is offered.
SYNTHESIS AND STUDY OF STRUCTURE OF IMIDAZOLIDES OF 1-ADAMANTANEACETIC ACID
Authors: Sklyuev P.V. , Zarubin Y.P. , Purygin P.P. , Konstantinov A.V.
Published: October 2020

The methods of synthesis of imidazolides of 1-adamantanacetic acid were designed. The relation of hydrolytic stability and structure was studied in theory. The way of synthesis process and its possible realizations are discussed in this work. A range of physical and chemical and spectral properties was studied. The physical and chemical relations of sorption, synthesized by imidazole adamantane derivatives using the high performance liquid chromatography, were described.
THE NEW FOR SAMARA AREA SPECIES OF LEPIDOPTERA.4-th REPORT
Authors: Sachkov S.A.
Published: October 2020

In the article sixty one species of Lepidoptera new for the Samara Region are noted and three species are deleted.
ON SOME PROPERTIES OF J -ANALYTICAL FUNCTIONS
Authors: Nikolaev V.G.
Published: October 2020

The properties of 2-vector-valued functions analytic in Douglis are studied. Three auxiliary theorems, on the basis of which the general algorithm of constructing examples of not-uniqueness homogeneous problem of Schwartz in the form of quadratic forms is reduced to are proved.
THE DYNAMICS OF TOWAGE BY THE ELASTIC ROPE IN A GRAVITATIONLESS SPACE
Authors: Aslanov V.S. , Yudintsev V.V.
Published: October 2020

The dynamics of the rigid body connected with the space tug by the elastic rope in a gravitationless space is considered. The equations of motion are derived from a Lagrange formalism. The influence of initial conditions on the rigid body behaviour is studied. The posibility of existence of critical behaviour of movement which can cause the entanglement of rope is shown.
SYSTEM CREATING OF HYBRID METHODS OF MATHEMATICAL MODELING OF DIFFICULT ELECTRODYNAMICS SYSTEMS
Authors: Buzova M.A. , Bukashkin S.A. , Minkin M.A.
Published: October 2020

In this paper, we demonstrate key problems of constructing a system of hybrid methods for mathematical modeling of complicated electrodynamics systems. The problem is posed and the main hybrid methods of mathematical modeling are given.
MODELING OF INFLUENCE OF THERMAL SPACE FACTORS ON OPTICAL CHARACTERISTICS OF LENS TELESCOPE OF SPACECRAFT
Authors: Tsaplin S.V. , Bolychev S.A.
Published: October 2020

The software based on software packages ANSYS, MathCAD, Zemax is developed to study the effects of thermal factors of space on the optical characteristics of spacecraft lens telescope. The calculation of time-dependent temperature and strain fields, the output parameters of optical system is carried out.
THE MODELLING OF PARAMETRS OF MOTION OF CENTRE OF MASS OF SPACE VEHICLE AND METHODS OF PROCESSING
Authors: Yakovlev E.K. , Blatov I.A.
Published: October 2020

A mathematical model of motion of centre of mass of space vehicle is suggested and methods of processing of parameters based on the usage of Kalman filter and combined wavelet filter are also suggested. The results of numerical experiments of defining parameters are presented.
NEUTRALIZATION, UTILIZATION AND WASTE PROCESSING OF PRODUCTION OF TNT
Authors: Ioganov K.M. , Pyzhov A.M. , Kukushkin I.K. , Popov Y.S. , Ivankov A.V. , Yanova M.A. , Purygin P.P.
Published: October 2020

In the given article the results of perennial studies on the development of ways of utilization and waste processing of production of TNT are presented. The efficient ways of utilization of wastes at production of clayite, gypsum, water glass and silicious glass are suggested.
MODULATION OF RESPIRATORY REACTIONS AT ELECTRICAL STIMULATION OF MAGNUS RAPHE NUCLEUS OF MIDDLE SEAM BEFORE AND AFTER MICROINJECTION OF GABAZIN
Authors: Orlova A.O.
Published: October 2020

In the article the inhibitory effects on respiratory parameters during electrical or chemical stimulation of the magnus raphe nucleus are induced mainly by the participation of GABA. To elucidate the involvement of GABA
THEORETICAL STUDY OF STABILITY OF COMPOSITE BASED ON CARBON NANOTUBES AND RUTILE
Authors: Glukhova O.E. , Kolesnikova A.S. , Saliy I.N. , Slepchenkov M.M.
Published: October 2020

With the help of quantum and chemical method of close coupling, finding of stable configuration of nanocomposite on the basis of "carbon nanotube and ceramics"is carried out. Rutile nanoparticle with surface (110) consisting of 148 atoms was considered as ceramic material. The criterion for stability was the enthalpy of reaction of formation of investigated composite. It is found out that the enthalpy of reaction decreases monotonically with increasing diameter of nanotube. It was revealed that the growth of stability of composite contributes to the increase in the number of bonds O-C and their location in two rows.
EFFECT OF PHENOLIC DERIVATIVES OF BENZIMIDAZOLE ON GROWTH AND ENZYME ACTIVITY OF E. COLI
Authors: Belousova Z.P. , Klenova N.A. , Makeeva I.A.
Published: October 2020

Dose-response stady (concentration of 50-200 mkg/ml) effect on growth total degidrogenase, catalase, sukcinatdegidrogenase activity of E. COLI phenolic benzimidazole derivatives containing a methyl group and the glycoside radical is researched. All compounds have dozo-respouse bacteriostatic effect and cause metabolic stress, resulting in higher concentrations of active degidrogenase and catalase. Most damaging effect has 4(2-methyl-1fi-benzimidazol-ylmethyl)phenyl-2,3,4,6-tetra-O-azethyl-/3-D-glucopyranozyd in a concentration of 200 mkg/ml.
IMPROVEMENT OF TECHNOLOGY FOR GENERATION OF NITROBENZENE
Authors: Deputatova Yu.Yu. , Kukushkin I.K. , Velikanova E.V. , Pyzhov A.M. , Purygin P.P.
Published: October 2020

The new technological process of generation of nitrobenzene is presented in this article. The possibility of using the sugeested technology in industry instead of using sulfuric-nitric acid mixtures is shown.
RESEARCH OF HORMONAL STATUS OF WOMEN WITH VARIOUS REPRODUCTIVE DISORDERS
Authors: Pisareva E.V. , Razumnaya A.E. , Borzenkova A.V.
Published: October 2020

Comparative investigation of the content of level of anti-myullerian and follicle-stimulating hormone in women in different age groups depending on the phase of menstrual cycle. Anti-myullerian hormone is one of the most interesting tokens of woman's reproductive system, appeared in the last years. The measurement of this new ovarian nonsteroidal hormone allowed us to study the deeper processes of growth and maturation of hoses and clarify certain issues of pathogenesis of a number of gynaecological diseases.
ON NUMERICAL ESTIMATE OF LIMITS OF MAXIMAL MEAN FOR PERIODIC FUNCTIONS
Authors: Lepilov A.N.
Published: October 2020

The scheme of definition of an error of numerical method of calculation of limit of maximal mean for periodic function is offered. The example of calculation of limit of maximal mean is considered.
INVERSE PROBLEM FOR A NONLINEAR INTEGRAL AND DIFFERENTIAL EQUATION OF THE THIRD ORDER
Authors: Yuldashev T.K.
Published: October 2020

In this paper a method of study of inverse problem for a nonlinear partial integral and differential equation of the third order is proposed. A theorem on the existence and uniqueness of solution of this inverse problem is proved.
THIN-WALLED COVERS WITH SURFACE CRACK DEFECTS IN DUGDALE APPROXIMATION
Authors: Yakovlev A.S.
Published: October 2020

In the work definition of area of possible limiting conditions of thin-walled covers from an ideal elastoplastic material with not through blind fractured defect (scratch) is considered. Areas of possible limiting conditions for scratches of variable depth are considered. Comparison of experimental and theoretical data is given. The problem of determination of limiting extent of defects which at the set level of operational loadings can lead to catastrophic destruction of all construction is solved.
MODELING AND OPTIMIZATION OF MINING WITH MULTIWELL DOUBLY PERIODIC CLUSTERS
Authors: Astafiev V.I. , Roters P.V.
Published: October 2020

The paper is devoted to the productivity of multiwell doubly periodic systems of vertical producing well (multiwell clusters). As cluster, we mean union of several homogeneous elements such that it can be considered as one module with specific features.
COMPARATIVE ANALYSIS OF WELL LOCATION SCHEMES AT WATERFLOODING
Authors: Kasatkin A.E.
Published: October 2020

The main aim of this research is the creation of program tool for quantitative and qualitative comparison of different schemes of well location applied at waterflooding: the estimates were supposed to be carried on the basis of solution of the problem of advancement of border of OWC in time. The achieved results may be used for designing of waterflooding of real oilfields. At the heart of program complex lies the model of infinite homogeneous layer of fixed thickness, the surface of which is covered by doubly periodic grating with upstream and blowing wells in their cells. For describing of the process of combined filtration of water and oil modified Weierstrass dzeta-function was used.
ON THE METHOD OF SYNTHESIS OF OPTIMAL CONTROL OF SPACECRAFT REORIENTATION DURING SENSING HARDWARE REDIRECTION
Authors: Morozova M.V.
Published: October 2020

The problem of optimal control of spacecraft reorientation during remote earth sensing hardware redirection is considered. Computational algorithm for the approximate solution of the problem is developed. Efficiency of this algorithm is confirmed by the results of the performed modeling.
EFFECTS OF DAMAGE FIELD ON THE CRACK-TIP STRESS FIELD IN NON-LINEAR MATERIAL
Authors: Fedina M.E.
Published: October 2020

Based on experimental data it is supposed that the boundary of the area in which the process of accumulation of damages takes place, is semiellipse and beams that are parallel to the edges of the crack. Setting by this hypothesis the form of area of the process, asymptotic decompositions of component of tensor of strain and damage are defined.
ON A SUPERCLASS OF A-GRAMMARS
Authors: Tsvetov V.P.
Published: October 2020

In this paper we consider a superclass of automaton grammars that can be represented in terms of paths on graphs. With this approach, we assume that vertices of graph are labeled by symbols of ﬁnite alphabet A . We will call such grammars graph-generated grammars or G-grammars. In contrast to the graph grammars that are used to describe graph structure transformations, G-grammars using a graphs as a means of representing formal languages. We will give an algorithm for constructing G-grammar which generate the language recognized by deterministic ﬁnite automaton. Moreover, we will show that the class of languages generated by G-grammars is a proper superset of regular languages.
METRIC AND TOPOLOGICAL FREEDOM FOR SEQUENTIAL OPERATOR SPACES
Authors: Nemesh N.T. , Shteiner S.M.
Published: October 2020

In 2002 Anselm Lambert in his PhD thesis [1] introduced the deﬁnition of sequential operator space and managed to establish a considerable amount of analogs of corresponding results in operator space theory. Informally speaking, the category of sequential operator spaces is situated ”between” the categories of normed and operator spaces. This article aims to describe free and cofree objects for diﬀerent versions of sequential operator space homology. First of all, we will show that duality theory in above-mentioned category is in many respects analogous to that in the category of normed spaces. Then, based on those results, we will give a full characterization of both metric and topological free and cofree objects.
FIELD OF INVARIANTS OF BORELEAN GROUP OF ADJOINT REPRESENTATION OF GL(n,K)
Authors: Vyatkina K.A.
Published: October 2020

The paper is devoted to invariant theory problems, in particular to the problem of ﬁnding generators of invariant ﬁelds in an explicit form. The set of generators is given for invariant ﬁeld of unitriangular group concerning the ad-joint representation of GL(n, K) group. Moreover, the set of generators of Borel group for the ﬁeld of invariants is constructed and their algebraic independence is proved. Lie group;adjoint representation;ﬁeld of invariant;generators of the ﬁeld of invariants;Borel group;
THE EXACTNESS OF THE GERSTEN COMPLEX FOR ADZUMAYA ALGEBRAS IN EQUICHARACTERISTIC CASE
Authors: Mingazov A.A.
Published: October 2020

One of the well-known problems of algebraic K-theory is the Gersten conjecture. In this work we prove a variant of Gersten conjecture for Adzumaya algebras in equicharacteristic case. Geometrical case of this proposition was proved in the article by I. Panin and A. Suslin.
TASK ON LONGITUDINAL VIBRATIONS OF A ROD WITH DYNAMIC BOUNDARY CONDITIONS
Authors: Beylin A.B. , Pulkina L.S.
Published: October 2020

In this paper, one-dimensional longitudinal vibration of a solid rod ﬁxed at the ends by means of local masses and springs is studied. As a mathematical model we use Rayleigh rod. The existence and uniqueness of a generalized solution are proved.
VAN DER POL AND RAYLEIGH OSCILLATORS IN DISCRETE TIME
Authors: Zaitsev V.V. , Lindt S.V. , Shilin A.N.
Published: October 2020

New discrete displays of classical self-oscillatory systems - Van der Paul and Rayleigh’s oscillators are oﬀered. Displays with the kept temporary characteristics of response of linear system on external inﬂuence are received on the basis of combination of methods of parametrical synthesis and invariancy of pulse char- acteristics of dynamic systems. Examples of generation of regular and chaotic self-oscillations in discrete time are given. For the analysis of self-oscillations in the received discrete systems the method of slowly changing amplitudes is used. The eﬀect of substitution of frequencies in a range of self-oscillations with use of the improved ﬁrst approach is considered.
EXPERIMENTAL INVESTIGATION OF LABORATORY PROTOTYPE OF SPACECRAFT OPTICAL TELESCOPE ASSEMBLY IN LABORATORY CONDITIONS
Authors: Tsaplin S.V. , Bolychev S.A. , Mishagin B.S. , Shemanaev D.V.
Published: October 2020

In this paper the speciﬁcations of precision system of ensuring thermal regime of spacecraft optical telescope assembly designed for Earth remote sensing are considered. The laboratory model of thermal control system is designed for ex- perimental investigations in the vacuum chamber. Experimental investigations of laboratory model of thermal regime under conditions of simulating space enviroment (low space temperature, direct and reﬂected from the Earth solar ﬂux, Earth heat ﬂux) is carried out. High temperature stability and low power consumption of the system is shown.
PRODUCTION WASTES OF TNT AS AN EFFICIENT RAW MATERIAL FOR GETTING FOAM GLASS
Authors: Pyzhov A.M. , Kukushkin I.K. , Strelkova A.V. , Pozhidaev O.V. , Yanova M.A. , Popov Y.S. , Purygin P.P.
Published: October 2020

In the given article results of studies on experimental estimate of possibility of waste recycling of production of TNT in foam glass are presented. Authors for the ﬁrst time demonstrated experimentally that there is a real possibility of using wastes as a feedstock to produce silicate foam glass, which in turn is used for the manufacture of silicate glass foam - one of the most eﬀective and eco- friendly modern heat-insulating materials. Initial raw charge used for producing silicate glass comprises a third waste, which signiﬁcantly reduces the cost of resulting foam glass. For puriﬁcation of gaseous discharges formed from the manufacture of original silicate glass from nitrogen oxides, an eﬃcient thermal method for neutralizing them on the basis of active carbons is ﬁrst suggested. It is shown by experiments that the highest possible degree of cleaning (≈ 98 %) in the present process can be achieved at 580-600 ◦C.
ASSESSMENT OF RELATIVE LIFE CONDITION OF PLANTATIONS OF DROOPING BIRCH (BETULAPENDULA ROTH.) AND BALSAM POPLAR (POPULUS BALSAMIFERA L.) IN INDUSTRIAL AND RESIDENTIAL AREAS OF STERLITAMAK INDUSTRIAL CENTER
Authors: Ibragimova A.Kh. , Tagirova O.V. , Giniyatullin R.Kh. , Kulagin A.Yu.
Published: October 2020

Determination of relative life condition of tree plantations allows to evaluate the suitability of certain trees and plants to the eﬀects of technogenic environmental factors. Plantations of drooping birch and balsam poplar in the industrial and residential areas of Sterlitamak industrial center are investigated. At collection and processing of factual material conventional methods of study of tree plantations are used. Instrumental (diameter, height, age) and visual determination (crown density, degree of leaf damage, presence of dead branches) of diagnostic parameters are carried out. An assessment of relative life condition is carried out.
STABILIZATION OF HAMILTONIAN SYSTEMS WITH A GUARANTEED ESTIMATE OF QUALITY OF MANAGEMENT
Authors: Kurkina E.V.
Published: October 2020

Stabilization problem with guaranteed estimate of quality of management of zero solution of nonautonomous Hamiltonian system was solved. It arises from the problem of optimal stabilization by reducing functional requirements for a estimate: instead of minimizing it is only necessary that it excelled to a pre-assessment. The solution is obtained by means of synthesis of active program control, acting to the system, and stabilizing control of feedback. The problem is solved analytically by the direct method of Lyapunov's stability theory with Lyapunov's function with constant sign derivatives. As examples, problems of synthesis and stabilization of program motions of homogeneous rod of variable length and variable-length pendulum in a rotating plane are solved.
ON VARIETIES OF ASSOCIATIVE ALGEBRAS WITH WEAK GROWTH
Authors: Ratseev S.M.
Published: October 2020

We prove that any variety of associative algebras with weak growth of the sequence {c_n(V)}_{n\geq 1} satisﬁes the identity [x_1, x_2][x_3, x_4] . . . [x_2_{s-1}, x_{2s}] = 0 for some s. As a consequence, the exponent of an arbitrary associative variety with weak growth exists and is an integer and if the characteristic of the ground ﬁeld is distinct from 2 then there exists no varieties of associative algebras whose growth is intermediate between polynomial and exponential.
THIN-WALLED STRUCTURES DESTRUCTION AND LOCATION STRAIN ON CHART RIGID-CURRENT
Authors: Yakovlev A.S.
Published: October 2020

In this article the model of fracture of thin plates with cracks, which is a con- tinuation and generalization of rocket fuel components model (Leonov-Panasyuk- Dugdale) and based on the idea of plastic zone at the crack tip as the areas in which deformations occur on a rigid scheme of Prager ﬂow.
Analysis ofmulticomponent mixture on the example of the drug ”Pentalgin” bythe methods of TLC and IR-Fourier spectrometry
Authors: Lobachev A.L. , Red’kin N.A. , Trifonova Yu.V.
Published: October 2020

The deﬁnition of a qualitative composition of multicomponent drugs ”Pen- talgin” and ”Pentalgin ICN” by TLC and IR-spectrometry is carried out. It is shown that using just TLC or just FT-IR spectrometry does not allow us to identify all the major components. It has been proposed an authentication scheme, which includes the steps of isolating of the test components, their sep- aration by TLC, followed by extraction of components and deﬁnition by FTIR spectrometry. The combination of these two techniques allows to separate and identify almost all the most important components of the mixture.
Morphological variability of generative shoots of Nepeta grandiﬂora M. Bieb. in natural conditions andat introduction
Authors: Guseynova Z.A. , Kuramagomedov M.K.
Published: October 2020

Interpopulation variability of Nepeta grandiﬂora M. Bieb. in the nature and in the conditions of an introduction based on complex of morphological fea- tures of generative shoots was studied. Assessment of investigational traits of generative shoot of N. grandiﬂora showed reducing the size of annual shoots altitude of growth in natural conditions, and introduction. The reproductive ef- fort and leaf-bearing have not always in positive correlative communication with productivity of shoots. It was detected that the weight traits of shoots have a high level of variability in all populations under various conditions of growth. The data obtained are of interest for understanding the mechanisms of adaptive reactions of introduced plants and may be used for introduction forecasting.
Keldysh problem for Pulkin’s equation in a rectangular domain
Authors: Saﬁna R.M.
Published: October 2020

In this article for the mixed type equation with a singular coeﬃcient Keldysh problem of incomplete boundary conditions is studied. On the basis of property of completeness of the system of own functions of one-dimensional spectral prob- lem the criterion of uniqueness is established. The solution is constructed as the summary of Fourier-Bessel row. At the foundation of the uniform convergence of a row there is a problem of small denominators.Under some restrictions on these tasks evaluation of separation from zero of a small denominator with the corresponding asymptotics was found, which helped to prove the uniform con- vergence and its derivatives up to the second order inclusive, and the existence theorem in the class of regular solutions.
Models for measuring the liquid level in thetank of rocket carrier
Authors: Klyuev N.I. , Filatov O.P.
Published: October 2020

The models for measuring the level of a viscous incompressible ﬂuid in the tank by liquid level in the measuring tube are considered. The tank is in the gravitational ﬁeld and the level of liquid inside varies according to some law. The base model is the ﬁrst boundary value problem for nonlinear integro-diﬀerential equation of parabolic type. The empirical model is Cauchy problem for nonlinear ordinary second order diﬀerential equation. It is numerically founded that for linear time-decreasing level of ﬂuid tank ﬂuid level in the measuring tube oscillates about level in the tank with damping amplitude.
Problem on vibration of a bar with nonlinearsecond-order boundary damping
Authors: Beylin A.B. , Pulkina L.S.
Published: October 2020

In this paper, we study the initial-boundary problem with nonlinear dynam- ical boundary condition for the pseudohyperbolic equation. This problem repre- sents a mathematical model of longitudinal vibration in a thick short bar with dynamic nonlinear second-order boundary damping. The existence and unique- ness of a generalized solution are proved. The proof is based on a priori estimates and Galerkin procedure. This approach allows to construct approximation in the suitable for practical application form.
ON SOLUTIONS OF TRAVELING WAVE TYPE FOR A NONLINEAR PARABOLIC EQUATION
Authors: Pikulin S.V.
Published: October 2020

We consider the Kolmogorov — Petrovsky — Piskunov equation which isa quasilinear parabolic equation of second order appearing in the flame propagationtheory and in modeling of certain biological processes. An analyticalconstruction of self-similar solutions of traveling wave kind is presented for thespecial case when the nonlinear term of the equation is the product of theargument and a linear function of a positive power of the argument. The approachto the construction of solutions is based on the study of singular pointsof analytic continuation of the solution to the complex domain and on applyingthe Fuchs — Kovalevskaya — Painlev´e test. The resulting representation of thesolution allows an efficient numerical implementation.
ON ASYMPTOTIC PROPERTIES OF SOLUTIONS, DEFINED ON THE HALF OF AXIS OF ONE SEMILINEAR ODE
Authors: Filimonova I.V. , Khachlaev T.S.
Published: October 2020

The paper deals with the solutions of ordinary diﬀerential semi-linear equa- tion, the coeﬃcients of which depend on several real parameters. If the coeﬃcient is chosen so that the equation does not contain the ﬁrst-order derivative of the unknown function, it will be the case of Emden - Fowler equation. Asymp- totic behavior of Emden - Fowler equation solutions at inﬁnity is described in the book of Richard Bellman. The equations with the ﬁrst-order derivative, considered in this work, erase in some problems for elliptic partial diﬀerential equations in unbounded domains. The sign of the coeﬃcient in ﬁrst-order deriva- tive term essentially inﬂuences on the description of solutions. Partly the result of this paper can be obtained from the works of I.T. Kiguradze. In present work we use lemmas about the behavior of solutions of the linear equations with a strongly (weakly) increasing potential. The paper deals with the solutions of ordinary diﬀerential semi-linear equa- tion, the coeﬃcients of which depend on several real parameters. If the coeﬃcient is chosen so that the equation does not contain the ﬁrst-order derivative of the unknown function, it will be the case of Emden - Fowler equation. Asymp- totic behavior of Emden - Fowler equation solutions at inﬁnity is described in the book of Richard Bellman. The equations with the ﬁrst-order derivative, considered in this work, erase in some problems for elliptic partial diﬀerential equations in unbounded domains. The sign of the coeﬃcient in ﬁrst-order deriva- tive term essentially inﬂuences on the description of solutions. Partly the result of this paper can be obtained from the works of I.T. Kiguradze. In present work we use lemmas about the behavior of solutions of the linear equations with a strongly (weakly) increasing potential.
ON THE ASYMPTOTIC BEHAVIOR OF EIGENVALUES OF THE BOUNDARY VALUE PROBLEM WITH A PARAMETER
Authors: Filinovskiy A.V.
Published: October 2020

The paper presents the investigation of an eigenvalue problem for the Laplace operator with Robin boundary condition in a bounded domain with smooth boundary. The case of boundary condition containing a real parameter is con- sidered. It is proved that multiplicity of the eigenvalue to the Robin problem for all values of the parameter greater than some number does not exceed the mul- tiplicity of the corresponding eigenvalue to the Dirichlet problem for the Laplace operator. For simple eigenvalue of the Dirichlet problem the convergence of eigen- function of the Robin problem to the eigenfunction of the Dirichlet problem for unlimited increase of the parameter is proved. The formula for derivative on the parameter for eigenvalues of the Robin problem is established. This formula is used to justify the asymptotic expansions of eigenvalues of the Robin problem for large positive values of the parameter.
ON REPRESENTATION OF MODULAR FORMS AS HOMOGENEOUS POLYNOMIALS
Authors: Voskresenskaya G.V.
Published: October 2020

In the article we study the spaces of modular forms such that each element of them is a homogeneous polynomial of modular forms of low weights of the same level. It is a classical fact that it is true for the level 1. N. Koblitz point out that it is true for cusp forms of level 4. In this article we show that the analogous situation takes place for the levels corresponding to the eta-products with multiplicative coeﬃcients. In all cases under consideration the base functions are eta-products. In each case the base functions are written explicitly. Dimensions of spaces are calculated by the Cohen - Oesterle formula, the orders in cusps are calculated by the Biagioli formula.
CUSP FORMS WITH CHARACTERS OF THE LEVEL P4
Authors: Voskresenskaya G. V.
Published: October 2020

In the article we prove structure theorems for spaces of cusp forms with characters of a level p. The spaces are decomposed in the direct sum of three subspaces. The first subspace is essencial. The eta-quotions play an important role in the investigations. The divisor of the functions is concentrated in cusps. The theorem about the structure of spaces of modular forms with characters is proved. We discuss the question about generators of these spaces and K.Onos problem. Dimensions of spaces are calculated by the Cohen Oesterle formula, the orders in cusps are calculated by the Biagioli formula.
INVERSE PROBLEM WITH INTEGRAL IN TIME OVERDETERMINATION AND NONLOCAL BOUNDARY CONDITIONS FOR HYPERBOLIC EQUATION
Authors: Duzheva A. V.
Published: October 2020

In this article, we consider a question of sovability of an inverse problem for a linear hyprbolic equation. Properties of the solution of an associated nonlocal initial-boundary problem with displacement in boundary conditions are used to develop an existence result for the identification of the unknown source. Overdetermination is represented as integral with respect to time-variable.