bluuebunny/crossref_metadata_2025 huggingface dataset:
The impact of solid solution composition on kinetics and mechanism of [2 + 2] photodimerization of cinnamic acid derivatives
Authors: Pandolfi Lorenzo , Giunchi Andrea , Salzillo Tommaso , Brillante Aldo , Della Valle Raffaele G. , Venuti Elisabetta , Grepioni Fabrizia , D'Agostino Simone
Published: December 2020

The effect of the solid solution composition on the kinetics of solid-state [2 + 2] photocycloadditions was evaluated via a combination of single crystal XRD, FTIR, Raman spectroscopy, and principal component analysis (PCA).
Theoretical H + O3 rate coefficients from ring polymer molecular dynamics on an accurate global potential energy surface: assessing experimental uncertainties
Authors: Chen Qixin , Hu Xixi , Guo Hua , Xie Daiqian
Published: December 2020

Thermal rate coefficients and kinetic isotope effects have been calculated for the reaction H + O3 → OH + O2 based on an accurate potential energy surface, using ring polymer molecular dynamics, quasi-classical trajectory and variational transition-state theory.
Effects of bending excitation on the reaction dynamics of fluorine atoms with ammonia
Authors: Tian Li , Song Hongwei , Yang Minghui
Published: December 2020

Exciting a low-frequency bending mode enhances a reaction much more than exciting a high-frequency stretching mode.
A DFT-based microkinetic study on methanol synthesis from CO2 hydrogenation over the In2O3 catalyst
Authors: Zhou Zhimin , Qin Bin , Li Shenggang , Sun Yuhan
Published: December 2020

CO2 conversion to methanol and CO is studied by DFT-based microkinetic simulations over the defective cubic In2O3 catalyst.
Innovative technologies for energy production from low temperature heat sources: critical literature review and thermodynamic analysis
Authors: Brogioli Doriano , La Mantia Fabio
Published: December 2020

Low-temperature heat sources could be exploited by innovative technologies for producing work. The challenge is improving the efficiency and power density.
An efficient and recyclable Pickering magnetic interface biocatalyst: application in biodiesel production
Authors: Liu Xiaobo , Mao Yuhua , Yu Siyang , Zhang Hao , Hu Kecheng , Zhu Lingyu , Ji Jianbing , Wang Jianli
Published: December 2020

A magnetically responsive Pickering interface biocatalytic system was used as an efficient platform for the separation and reuse of catalysts in biodiesel production.
Modulating the thermal and structural stability of galleneneviavariation of atomistic thickness
Authors: Lambie Stephanie , Steenbergen Krista G. , Gaston Nicola
Published: December 2020

Usingab initiomolecular dynamics, we show that a recently discovered form of 2D Ga—gallenene—exhibits highly variable thickness dependent properties.
New composites based on zeolites (H-Beta, H-ZSM-5) and nanosized titanium(iv) oxide (anatase and η-phase) doped by Ni, Ag, V with photocatalytic, adsorption and bactericidal properties
Authors: Gainanova Asiya A. , Domoroshchina Elena N. , Kuz’micheva Galina M. , Khramov Evgeniy V. , Chumakov Ratibor G. , Gotovtsev Pavel M. , Pirutko Larisa V. , Zybinskiy Andrey M. , Yashina Nataliya V.
Published: December 2020

The first prepared nanocomposites with zeolites H-Beta, H-ZSM-5 and anatase and η-phases, doped by V, Ni, Ag, are multifunctional materials for water purification from harmful pollutants and pathogenic bacteria.
Recent advances in transition metal-catalyzed olefinic C–H functionalization
Authors: Liu Bingxian , Yang Lingyun , Li Pengfei , Wang Fen , Li Xingwei
Published: December 2020

Recent advances during 2015–2020 in the field of metal-catalyzed olefinic C–H functionalization are organized according to the metal center of the catalyst, with an emphasis on the similarities and differences among different catalysts.
Ring expansion and ring opening of 3-halooxindoles with N-alkoxycarbonyl-O-tosylhydroxylamines for divergent access to 4-aminoquinolin-2-ones and N-Cbz-N’-arylureas
Authors: Yuan Wei-Cheng , Zuo Jian , Yuan Shu-Pei , Zhao Jian-Qiang , Wang Zhen-Hua , You Yong
Published: December 2020

The reaction of N-alkoxycarbonyl-O-tosylhydroxylamines with indol-2-ones in situ generated from 3-halooxindoles has been developed for divergently accessing 4-aminoquinolin-2-ones and N-Cbz-N’-arylureas in good to excellent yields.
Photo-modulated wide-spectrum chromism in Eu3+ and Eu3+/Tb3+ photochromic coordination polymer gels: application in decoding secret information
Authors: Verma Parul , Singh Ashish , Maji Tapas Kumar
Published: December 2020

A lanthanide based photochromic coordination polymer gel (pcCPG) material has been developed which showed photomodulated colour change based on pcFRET and has the potential to be employed for decoding secret information.
2D framework materials for energy applications
Authors: Schneemann Andreas , Dong Renhao , Schwotzer Friedrich , Zhong Haixia , Senkovska Irena , Feng Xinliang , Kaskel Stefan
Published: December 2020

In recent years the 2D concept has been transferred from conventional 2D materials to porous 2D framework materials. This minireview takes a closer look onto the preparation of 2D framework materials and their merits for energy applications.
Switching between mono and doubly reduced odd alternant hydrocarbon: designing a redox catalyst
Authors: Ahmed Jasimuddin , Datta Paramita , Das Arpan , Jomy Stephy , Mandal Swadhin K.
Published: December 2020

A doubly reduced redox non-innocent phenalenyl based transition metal free catalyst has been designed and utilized in the development of the C–C cross coupling reaction through the activation of aryl halides at room temperature.
Single molecule force spectroscopy reveals the context dependent folding pathway of the C-terminal fragment of Top7
Authors: Li Jiayu , Chen Guojun , Guo Yabin , Wang Han , Li Hongbin
Published: December 2020

Optical tweezers experiments reveal that the folding of the C-terminal fragment of Top7 (cFr) is context-dependent. Depending on its neighboring sequence, cFr shows very different folding pathways and folding kinetics.
Tannic acid/Mg2+-based versatile coating to manipulate the osteoimmunomodulation of implants
Authors: He Min , Gao Xinhui , Fan Yadi , Xie Li , Yang Mo , Tian Weidong
Published: December 2020

Instead of directly stimulating osteogenesis, endowing an implant surface with a favourable osteoimmunomodulatory (OIM) function has emerged as a new effective strategy to enhance osteointegration.
A low-cost piezoresistive pressure sensor with a wide strain range – featuring polyurethane sponge@poly(vinyl alcohol)/sulfuric gel electrolyte
Authors: Cheng Haonan , Wang Bo , Yang Kun , Wang Chaoxia
Published: December 2020

A low-cost and high-compressibility PVA/H2SO4@PU composite was prepared by one-step dipping to realize human movement monitoring.
Understanding the molecular origin of solid-state emitting PMI realized via the detection of hazardous organic peroxides
Authors: Roy Rupam , Bhowal Rohit , Sharma Vikas , Chopra Deepak , Koner Apurba Lal
Published: December 2020

The colorimetric and ratiometric fluorogenic detection of harmful organic peroxides by using the S–S annulated perylene monoimide (PMISS) mediated emergence of a unique solid-state red-emitting perylene monoimide (PMI) derivative is demonstrated.
Shape-selective rhodium nano-huddles on DNA for high efficiency hydrogen evolution reaction in acidic medium
Authors: Kumaravel Sangeetha , Karthick Kannimuthu , Sankar Selvasundarasekar Sam , Karmakar Arun , Kundu Subrata
Published: December 2020

Cost-effective Rh NPs have been synthesized over a DNA scaffold which acts as an effective electrocatalyst for HER in acidic medium. DNA stabilized Rh NPs during synthesis and also acts as a stable binder with minimum loading for electrocatalysis.
Efficient multicasting technique for elastic optical network
Authors: Tarhani Mehdi , Sarkar Sanjib , Eghbal Morad Khosravi , Shadaram Mehdi
Published: December 2020

The elastic optical network (EON) is the latest solution to increase the capacity of optical networks, as a response to the ever‐increasing demand for traffic. To meet the EON mission, new algorithms and frameworks need to be designed. In this paper, a new algorithm based on EON is proposed that employs a subtree‐based scheme to establish multicast transmissions. To solve the problems of routing, modulation level and spectrum allocation, the primary problem of EON with regard to resource allocation under wavelength continuity and wavelength contiguity constraints, as well as distance adaptive transmission, the proposed algorithm solves each subproblem by considering the existence of a solution for other subproblems. The authors take into account the effects of splitting the transient light at the intermediary nodes on the signal‐to‐noise ratio to enhance the accuracy of the resource allocation. The proposed scheme is extensively examined under different networks and compared with the existing multicasting benchmark. The simulation results show that the proposed scheme considerably increases the network capacity without placing any burden on the network.
Testing late-time cosmic acceleration with uncorrelated baryon acoustic oscillation dataset
Authors: Benisty David , Staicova Denitsa
Published: December 2020

Baryon acoustic oscillations (BAO) involve measuring the spatial distribution of galaxies to determine the growth rate of cosmic structures. We derive constraints on cosmological parameters from 17 uncorrelated BAO measurements that were collected from 333 published data points in the effective redshift range 0.106 ≤ z ≤ 2.36. We test the correlation of the subset using a random covariance matrix. The Λ cold dark matter (ΛCDM) model fit yields the cosmological parameters Ωm = 0.261 ± 0.028 and ΩΛ = 0.733 ± 0.021. Combining the BAO data with the Cosmic Chronometers data, the Pantheon type Ia supernova, and the Hubble diagram of gamma-ray bursts and quasars, the Hubble constant yields 69.85 ± 1.27 km s−1Mpc−1and the sound horizon distance gives 146.1 ± 2.15 Mpc. Beyond the ΛCDM model we test ΩkCDM andwCDM. The spatial curvature is Ωk = −0.076 ± 0.012 and the dark energy equation of states isw = −0.989 ± 0.049. We perform the Akaike information criteria test to compare the three models, and see that ΛCDM scores best.
Properties of a hypothetical cold pulsar wind in LS 5039
Authors: Bosch-Ramon V.
Published: December 2020

Context. LS 5039 is a powerful high-mass gamma-ray binary that probably hosts a young non-accreting pulsar. However, despite the wealth of data available, the means by which the non-thermal emitter is powered are still unknown.

Aims. We use a dynamical-radiative numerical model, and multiwavelength data, to constrain the properties of a hypothetical pulsar wind that would power the non-thermal emitter in LS 5039.

Methods. We ran simulations of an ultrarelativistic (weakly magnetized) cold e±-wind that Compton scatters stellar photons and that dynamically interacts with the stellar wind. The effects of energy losses on the unshocked e±-wind dynamics, and the geometry of the two-wind contact discontinuity, are computed for different wind models. The predicted unshocked e±-wind radiation at periastron, when expected to be the highest, is compared to LS 5039 data.

Results. The minimum possible radiation from an isotropic cold e±-wind overpredicts the X-ray to gamma-ray fluxes at periastron by a factor of ∼3. In the anisotropic (axisymmetric) wind case X-ray and ≳100 MeV data are not violated by wind radiation if the wind axis is at ≲20−40° from the line of sight (chance probability of ≲6−24%), depending on the anisotropic wind model, or if the wind Lorentz factor ∈102 − 103, in which case the wind power can be higher, but it requires e±-multiplicities of ∼106 and 109 for a 10−2 s and 10 s pulsar period, respectively.

Conclusions. The studied model predicts that a weakly magnetized cold pulsar e±-wind in LS 5039 should be strongly anisotropic, with either a wind Lorentz factor ∈102 − 103 and very high multiplicities or with a fine-tuned wind orientation. A weakly magnetized, cold baryon-dominated wind would be a possible alternative, but then the multiplicities should be rather low, while the baryon-to-e± energy transfer should be very efficient at wind termination. A strongly magnetized cold wind seems to be the most favorable option as it is consistent with recent research on pulsar winds and does not require fine-tuning of the pulsar wind orientation, and the wind multiplicity and Lorentz factor are less constrained.
Croissance démographique, sécurité alimentaire et accès à la santé et à l’éducation en zone cotonnière du Mali
Authors: Soumaré Mamy , Traoré Sidiki , Havard Michel
Published: December 2020

Le Mali a quadruplé sa population entre 1960 et 2020. Cette croissance démographique implique des besoins d’accès à la sécurité alimentaire et nutritionnelle, à la santé, à l’éducation et à l’emploi pour les primo arrivants. C’est le secteur agricole qui est sollicité par les politiques publiques pour répondre à cette demande. Quelle est la tendance démographique dans la zone cotonnière du Mali ? Quelles ont été les réponses locales face aux implications de cette croissance démographique en termes d’accès à la santé et à l’éducation ? Le présent article répond à ces questions à travers la mobilisation et l’analyse statistique et spatiale des données sur la production agricole et l’accès à la santé et à l’éducation à plusieurs échelles. Les résultats révèlent : (1) une croissance démographique supérieure à la moyenne du pays mais inégalement répartie, (2) une augmentation progressive de la quantité de céréales (maïs, mil et sorgho) par habitant liée à un accroissement de la production agricole plus rapide que celui de la population et (3) des progrès importants en matière d’accès physique aux infrastructures de santé et d’éducation. Cependant, la croissance démographique et les nouveaux défis liés à la sécurité alimentaire et à la nutrition soulèvent de nouvelles interrogations sur la capacité de l’agriculture à répondre à une demande de produits agricoles plus soutenue et diversifiée.
Models of abstract and real systems based on broken symmetry group
Authors: Gorshkov K.A. , Rau V.G. , Filippov R.V. , Arakelian S.M.
Published: December 2020

This article shows that symmetry groups as well as broken symmetry groups in natural and abstract mathematical may be used as models of development and evolution objects while describing the states and transformations of such systems. It also demonstrates “visualization” methods of PbTe nanostructures, ZN arithmetic, Galois group for the roots of a fourth degree polynomial, and DNA structure in the framework of category theory.
Algorithm for constructing logical operations to identify patterns in data
Authors: Lyutikova L.A. , Shmatova E. V.
Published: December 2020

Neural networks have proven themselves in solving problems when the input and output data are known, but the cause and effect relationship between them is not obvious. A well-trained neural network will find the right answer to a given request, but will not give any idea about the rules that form this data. The paper proposes an algorithm for constructing logical operations, in terms of multi-valued logic, to identify hidden patterns in poorly formalized areas of knowledge. As the basic elements are considered many functions of the multi-valued logic of generalized addition and multiplication. The combination of these functions makes it possible to detect relationships in the data under study, as well as the ability to correct the results of neural networks. The proposed approach was considered for classification problems, in the case of multidimensional discrete features, where each feature can take k-different values and is equivalent in importance to class identification.
Practical implementation of scheduling observations of moving objects that appear at random times
Authors: Boldyrikhin Nikolay , Svizhenko Alexey , Sosnovsky Ivan , Manakova Anastasiya
Published: December 2020

The article is devoted to practical implementation of planning of observations of the set of mobile objects appearing in the area of visibility of the measuring information system at random moments of time. A variant of the implementation of the suboptimal distribution of the measuring resources of the information system between the problems of trajectory detection and estimation is proposed. Application of the attitude proposed in the article allows to increase accuracy of measurement of paths of mobile objects up to 52% in comparison with uniform tracking plan.
Analysis of neural network results based on experimental data during indentation
Authors: Babushkina N , Lyapin A , Kovaleva A
Published: December 2020

The article is devoted to the development of machine learning methods for classes of technical problems, including determining the properties of materials. According to the authors, the neural network approximation algorithm is able to take into account the behavior of materials in various experimental conditions. The article provides illustrative examples of how a neural network with a single hidden layer can approximate a function of several variables with a given accuracy. As part of the study, a number of experimental measurements were made. The structure of the neural network and its main components are described.
Fundamentals of optimization of training algorithms for artificial neural networks
Authors: Kornev P.A. , Pylkin A.N.
Published: December 2020

In the modern IT industry, the basis for the nearest progress is artificial intelligence technologies and, in particular, artificial neuron systems. The so-called neural networks are constantly being improved within the framework of their many learning algorithms for a wide range of tasks. In the paper, a class of approximation problems is distinguished as one of the most common classes of problems in artificial intelligence systems. The aim of the paper is to study the most recommended learning algorithms, select the most optimal one and find ways to improve it according to various characteristics. Several of the most commonly used learning algorithms for approximation are considered. In the course of computational experiments, the most advantageous aspects of all the presented algorithms are revealed. A method is proposed for improving the computational characteristics of the algorithms under study.
Wideband centimetre range detector
Authors: Zikiy A , Zlaman P , Rumyantsev K
Published: December 2020

An experimental study of the diode detector of the centimeter wavelength range has been carried out. A brief description of the circuit and design is given. The experiment was carried out on an installation containing a standard signal generator, a digital oscilloscope, a power supply, and a offset panel. The results of the experiment are the amplitude and amplitude-frequency characteristics of the detector. The following parameters have been shown to be achieved: operating frequency range of at least 8-18 GHz, voltage sensitivity of at least 100 μV / μW, dynamic range of input signals at least 35 dB, voltage sensitivity unevenness of no more than 1.6 dB.
Possibilities of conducting XSS-attacks and the development of countermeasures
Authors: Revyakina Yelena , Cherckesova Larissa , Safaryan Olga , Korochentsev Denis , Boldyrikhin Nikolay , Ivanov Yuri
Published: December 2020

The article describes the investigation process of the possibilities of XSS–attacks, and the development of counteraction means to these attacks. Researches were determined whether XSS–attack can be fulfilled successfully, and vulnerability detection methods can be applied; were developed the logical and structural diagrams of XSS–vulnerability detection program; were realized program implementation (software) of algorithms for detecting XSS–vulnerabilities on the Web – sites. The software implementation is Web extension for the Google Chrome browser. Main purpose of implementing this software is to confirm or deny the presence of XSS–vulnerabilities on the site, and to counteract the possible attack.
A study method for possible breakdown of boiler tank for dangerous goods in an emergency collision
Authors: Bespalko S.V. , Grigoriev P.S. , Ruzmatov M.I. , Ibodulloev Sh.R.
Published: December 2020

An impact to the boiler of a railway tank car in an emergency in the event of a car derailment and falling onto a track has been considered. In this case, boiler breakdown, spillage of the transported cargo and fire can occur. When developing a method, the following objectives have been solved: development of a method for determining a stress-deformed state (SDS) of a cylindrical shell at the initial elastic stage of deformation; - development of a method for calculating the deformation energy for the boiler shell when the yield point in the impact zone is reached; - development of a method for estimating the conditions for the beginning of the limiting state (shell destruction). For the shell behavior to be modeled, a moment theory of shells has been used with taking into account the nonlinear terms in stress-strain deformations. The energy principles in the form of the Lagrange principle have been applied to compile a resolving system of equations. The onset of the limiting state is taken according to the condition of a cut along the striker perimeter. A system of the nonlinear equations at the first stage and a transcendental equation at the second one has been solved using numerical methods. The proposed method makes it possible to develop methods of protection in terms of the choice of methods for attaching add-on elements to the boiler.
Application of mathematical programming and modeling methods for monitoring the technical condition of underwater crossings of main gas pipelines
Authors: Pavlov N.S. , Vasilev B.Y. , Bykasov D.A.
Published: December 2020

The article deals with the problem of geodetic monitoring of the technical condition of underwater gas pipeline crossings. The theoretical scheme of increasing the accuracy of depth determination is studied in detail. In this paper, the goal is to increase the accuracy of obtaining the depth of the gas pipeline. The accuracy of the planned position for the largest survey scale (1:500) is 0.75 meters and is achieved using satellite equipment, even without the use of a dynamic positioning system, which allows, if necessary, to increase the accuracy of the data obtained by determining the orientation angles of the vessel. Despite the high popularity of this complex, the accuracy of depth measurements does not correspond to regulatory documents, which raises the question of the need to change the method of measurement and data processing, since the performance of work on monitoring the technical condition of gas pipelines is an important and relevant task. In order to control the developed methodology and automate measurement processing, two programs were written in the Python 3.7 programming language in the Spyder environment.
Mathematical modeling of 3D current flows for narrow shallow water bodies of complicated forms
Authors: Chistyakov A , Protsenko E , Sidoryakina V , Protsenko S
Published: December 2020

This article is devoted to the modeling of three-dimensional currents for narrow shallow water systems like Kerch straight. Model, which is presented in this article, is based on previously constructed 3D discrete model which has used cell filling function and rectangular uniform grids. The effect of rising free surface function has been detected in narrowest part of straight in numerical modelling. The proposed discrete models remain stable at depth differences tens of times, which is an important factor for coastal systems. Also this approach may be applied for wave evolution prediction in narrow straits of complicated bottom relief and coastal line.
Additive two-dimensional splitting schemes for solving 3D suspension transport problems on optimal boundary-adaptive grids with uniform spacing’s in the vertical direction
Authors: Sukhinov A , Sidoryakina V
Published: December 2020

The article considers3D matter transport model in dissolved and suspended forms (impurities) in coastal marine systems. The initial boundary value problem numerical solution is carried out on the basis of local2D splitting schemes. In this case, special attention is paid to the hig-hquality computational grid construction. As a rule, in the proposed methods, Cartesian grids are used, a variety of which are grids with boundary adaptation. The technology of constructing 3D vertically uniform boundary-adaptive grids on the basis of surface 2D grids, which is created using the procedure of minimizing the generalized Dirichlet functional, is presented. Previously, this approach has shown its effectiveness in constructing 2D non-degenerate regular grids containing the minimum number of cells (convex quadrangles) for test Z-shape regions, such as the “Maltese cross” and others, as well as in the 2Dhydrophysicsproblems numerical solution of coastal systems.
The safety assessment of lifting equipment using artificial intelligence methods
Authors: Lyapin A
Published: December 2020

The article is devoted to the problem of using artificial neural networks to assess the risk of developing emergencies during the operation of lifting crane equipment. The data sources are telemetric measurements from microcontroller load limiters, as well as data from technical and daily inspections of equipment condition, in the last case the data may be fuzzy.
Use of sensor networking technology to build a power transformer monitoring system
Authors: Smerdin A , Ermachkov G , Nezevak V , Sidorov O , Golubkov A
Published: December 2020

The paper discusses the technology of designing a monitoring system for power transformers and power supply devices, based on the use of sensor networks, describes the creation of a Bayesian network to predict the probability of failure. Conditions for achieving the maximum diagnostic efficiency with the required accuracy are formulated. A diagnostic system is proposed that allows assessing the influence of each parameter on the accuracy of predicting failures. Using the method of expert assessments, the possibility to calculate the probabilities of failures with a lack of information is shown.
Mathematical modeling in diabetic retinopathy
Authors: Vorobyeva I V
Published: December 2020

The problem of digital medicine in ophthalmology arose in connection with the increase in the incidence of diabetes mellitus in the world. The issue of preventing blindness and early diagnosis in diabetic retinopathy with a forecast of its course using mathematical modeling is especially acute. A system for assessing the prognosis of the risk of developing diabetic retinopathy was created based on interdisciplinary research in three areas: ophthalmology, biochemistry and mathematics. The studies were conducted in ophthalmology with the analysis of the condition of the retina in the macular area using digital ophthalmic equipment (optical coherence tomograph, fundus microperimeter). Biochemical studies consisted in the analysis of tear fluid with the determination of the level of the pathogenetic biomarker VEGF-A and the analysis of blood serum with the determination of the level of glycated hemoglobin HbA1c. Mathematical research consisted in the presentation of digital material in the form of mathematical criteria based on the method of standardizing the indicator under study. The result of the research was a computer program based on the developed mathematical formulas. The program gives the opportunity to automatically enter the data of a specific patient with diabetic retinopathy and give a prognosis of the disease.
Effect of antioxidants in a liposomal form containing organic iodine of the blood serum biochemical composition and the structure of muscle tissue formation of young rabbits
Authors: Zubochenko D , Pashtetsky V , Ostapchuk P , Kuevda T , Zyablitskaya Ye , Makalish T , Kopylova A
Published: December 2020

The study of the effect of antioxidants containing organic iodine on the formation of the enteral environment of California young rabbits is described in the article. A significant increase in the level of thyroxine in the experimental groups was in the 2nd by 6.7% and in the 3rd by 8.9% (P<0.05). In the third group, there was a significant tendency to increase the total protein in the blood serum: compared with the control, it increased by 3.39 units (P<0.05). This trend continues in the level of albumin at 3.58 units. (P<0.05). There was a significant increase in creatinine in young rabbits of both experimental groups by 20.51-28.89 units (P<0.05). There was a significant excess of iodine content in the meat of rabbits of group 2 by 81.0 mcg (P<0.05), and in animals of group 3-by 234.1 % (P<0.05). There was an increase in the number of muscle fibers in both experimental groups by 68.0 and 78.0% (P<0.05-0.01). The diameter of the muscle fiber of experimental animals was significantly lower by 13.1 and 17.3 % (P<0.05). The animals of the experimental groups formed meat with a more delicate structure and an increased content of valuable parts-muscle and fat tissue.
Mustard (Sinapis) in five-field tilled grain-fallow crop rotations in Southern Russia
Authors: Turin E N , Zhenchenko K G , Gongalo A. A. , Ivanov V Iu , Kulinich R. A. , Remeslo E V , Rostova E N , Shestopalov M V
Published: December 2020

The aim of the research was to study the cultivation of Sarepta mustard in the first and white mustard in the second rotation of the crop rotation. The experiments show the yield, its dependence on the timing of sowing mustard, the amount of productive moisture, weediness of crops in the links of crop rotations with mustard and mustard as a precursor. The main tillage in fallow is ploughing, whereas shallow and surface loosening are used for all other crops, including mustard. Mineral fertilizers for mustard were applied in autumn with a dose of N60P60 for the main tillage. An analysis of the yield by crop rotation with the title field of fallow and clean fallow showed that the average yield of mustard was 1.25 and 1.14 t/ha, respectively. It follows from this that, in the crop rotation with pure fallow, there was a tendency to increase the yield by 0.1 to 0.5 t/ha in comparison with the crop rotation where the fallow is occupied, but these increases are mathematically unprovable. The reserves of productive moisture for sowing mustard in crop rotations with the header field of clean and occupied fallow were the same both in the arable and meter horizons.
State of microbiocenosis of southern chernozem under the no-till system
Authors: Melnichuk T N , Egovtseva A Yu , Abdurashytov S F , Abdurashytova E R , Turin E N , Gongalo A. A. , Zubochenko A. A. , Pashtetskiy V S
Published: December 2020

Agricultural technologies aimed at reducing the tillage can be adopted as safer farming methods to preserve and improve the diversity of soil microbial communities. The area under the promising resource-saving no-till system (direct sowing) is increase in the conditions of the Steppe annually. The use of herbicides in such a farming system causes a negative effect on the soil biocenosis. But the introduction of agronomically useful microorganisms into the rhizosphere are increasing the resistance of plants against stress factors, their yields and product quality, and preserving soil fertility. The objective of this research was to assess the state of microbiocenosis of southern chernozem under the influence of no-till system and a complex of microbial preparations. The influence of direct sowing and microbial preparations on the state of microbocenosis of southern chernozem was established. The number of cellulolytic microorganisms increased under the influence of farming systems in comparison with the virgin soil. The use of microbial preparations contributed to an increase in the number of microorganisms of ecological and trophic groups and the representation of the majority of phyla, which also depended on the system of agriculture. A decrease in the representation ofAcidobacteriaandVerrucomicrobiaand an increase inFirmicutesandProteobacteriawere observed in comparison with virgin soil.
Composition of organic-mineral complexes (OMC) migrating in the reclaimed sod-podzolic soils (Umbric Albeluvisol Abruptic)
Authors: Litvinovich A V , Pavlova O Yu , Lavrishchev A V , Belimov A. A.
Published: December 2020

The composition of organo-mineral complexes (OMC) migrating from the arable horizon limed byUmbric Albeluvisol Abrupticwas studied. The carbon content in organic-mineral complexes (OMC) ranged from 5.5 to 5.7%. The optical density index (Esmg/ml) varied in the range of values from 2.7 to 3.1, characteristic for fulvic acids (FA). It was established that FAs averaged with bases retain the ability to exert a destructive effect on soil minerals, transferring a significant amount of Al, Mn, and Fe into solution. According to their ability to migrate as part of OMC, the elements studied in the experiment with dolomite particles at a dose of 7.35 t/ha were arranged in the following decreasing sequence: Mn > Al > Fe. In the experiment with conversion chalk (CC) at a dose of 20.25 t/ha, this sequence was Al > Mn > Fe.
Accumulation and Transformation of Extractive Substances in Krasnodar Tea
Authors: Belous O , Platonova N
Published: December 2020

It is important to create varieties with unique quality characteristics. However, a complete study of the processes of accumulation and transformation of the antioxidant complex in raw materials and finished (black and green) tea in humid condition of Russian has not been conducted. This article is devoted to the study of the features of the extractive substances of new selection forms of Krasnodar tea, breeding by scientists of the Subtropical Scientific Center. Comparison of tea by the content of components of the catechin complex showed that the new forms of tea selection Center is characterized by a high level of accumulation of various groups of catechins and the largest amount is epigallocatechingallate (from 42 to 66 %). The presence of active dynamics of caffeine, flavonoids and Ruthin in the raw material (3-leaf sprout), green and black tea. The variation of extractive substances in sprouts and ready-made tea is related to the weather conditions of vegetation, varietal characteristics of plants and processing conditions. All samples of the Center’s selection have a rich phenolic complex, which is of interest as sources of resistance to the action of abiogenic stressors. They can be used for selecting plants with a highly effective antioxidant system.
Association of CAPN1 and GH genes with productivity traits in Kazakh Whiteheaded cattle
Authors: Plakhtukova V , Selionova M I , Gladkikh M Yu , Kuznetsova O V
Published: December 2020

The Kazakh Whiteheaded cattle was developed by crossing local breeds with the Hereford breed in Kazakhstan in the 30s of the last century. This breed is adapted to arid conditions of extreme continental climate. The goal of the investi-gations was the assessment of the genetic structure of the Kazakh Whiteheaded breed based on the genes of calpain (CAPN1) and somatotropic hormone (GH) and analysis of the association of genotypes for these genes with productivity traits. The main argument for this aim is research works illustrated that both genes could affect on meat productivity traits in other breeds of cattle. 352 blood samples from representatives of Kazakh Whiteheaded animals of different sex and age groups were genotyped for the CAPN1 and GH loci. As a result, it was firstly proved that Kazakh Whiteheaded animals, who are CC homozygosis at the CAPN1 locus and VV homozygosis at the GH locus, reliably exceed animals without C and V alleles on the productivity traits such as milk production, average daily body weight gain, and pre-slaughter body weight, slaughter weight, carcass weight, flesh weight, chemical composition and histological characteristics of meat. It was also shown that the frequencies of the desired alleles and genotypes of these loci are rather low the frequency of the C allele was 0.11–0.17, and the frequency of the CC genotype was 0.03–0.06 in different age and sex groups; the frequency of the V allele was 0.19-0.40, and the frequency of the VV genotype was 0.03-0.31. Thus, planning selection for Kazakh Whiteheaded cattle, it would be useful to take into account the assessment of ani-mal genotypes at the CAPN1 and GH loci to increase the proportion of animals with the desired genotypes.
Geoinformation modeling of potential productivity in agricultural landscapes for the formation of sustainable land use
Authors: Melnichuk A Yu , Zakalichnaya O V , Popovich V V
Published: December 2020

The work is devoted to geoinformation modeling of potential and really possible yield of leading agricultural crops in the agricultural landscapes of the Simferopol region of the Republic of Crimea. The study area is characterized by high agricultural development, complicated physical and geographical location and insufficient moisture. Algorithm for geoinformation modeling of potential and really possible crop yields by the amount of arrival of photosynthetically active radiation for each point of input surface is considered. The resulting cartogram of averaged values deviation of potential and really possible yields from actual for leading agricultural crops can be used in the development of scientifically based recommendations for transformation of agricultural lands in complicated physical and geographical conditions.
The mechanism for the development of public-private partnerships in agriculture (on the example of the Republic of Uzbekistan)
Authors: Dustmurodov G G , Yunusov I. O. , Ahmedov U K , Murodov Sh M , Iskandarov S T
Published: December 2020

Research in this area is very relevant, the mechanism of publicprivate partnership in agriculture is very important, it allows, under mutually beneficial conditions, the state and the private sector to increase the resource base and direct unused resources to the stable development of the agricultural sector. The aim of the article is to study theoretical approaches and substantiate empirical recommendations aimed at improving the mechanism of work of public-private partnerships in agriculture in Uzbekistan, and in general.
Cyperus esculentus L. as a biotechnological raw material and substitute for peanuts in the production of confectionery products
Authors: Kiyashko N V , Berseneva S. A. , Belova G. A. , Belov A N
Published: December 2020

A comparative chemical composition of peanuts and Cyperus esculentus – a raw material that does not contain gluten, rich in fat, vitamins and minerals, is given. The possibility of replacing crushed peanuts with alternative raw materials – Cyperus esculentus. nodules is considered. Appropriate preparation of raw materials is offered. Sprinkling shortcake dough with crushed Cyperus esculentus . nodules, pre-soaked for 12 hours in water, fried and crushed will increase the nutritional value of the product.
Share repurchases, coronaeconomy and stakeholders’ interests
Authors: Tkachenko Irina , Bataeva Bela
Published: December 2020

The purpose of the paper is to consider the mechanism of share repurchases in the context of the coronaeconomy and the COVID-19 pandemic. The English- and Russian-language publications discussing share repurchases from the perspective of the stakeholder approach in corporate governance are reviewed. The practice of the Russian firms implementing share repurchase programs is analyzed, with the focus on the companies included in the Sustainable Development Ranking-100. It is concluded that share repurchases should be studied with regard to the impact they have on the interests of a wide range of company’s financial and non-financial stakeholders, and to the mutual influence of buybacks and parameters of sustainable economic development.
Influence of the presence of children taken care of in work motivation
Authors: Usheva Mariana , Ivanov Philip
Published: December 2020

Motivation is one of the most important aspects in human resources management. Motivated employees are often the difference between the good and great companies. The ever-complicating environment is demanding more and more from companies. In the current economical era, namely the human capital is the one thing, providing the requirements of the environment so that companies can afford to stay on the market. Therefore, everything linked to the proper human resources management should be examined in detail, which is the main purpose of the current study.

Here we aim to examine the link between the number of children for which the respondents are required to take care of and the most valuable motivators in workplace motivation. We firmly believe that the preferred motivators are directly linked to the number of children, with which we describe as the stage of the life cycle for each respondent.

First of all, in our article we would like to examine motivation as a part of the human resource management. Afterwards, we will examine the results from our survey, held among 595 respondents from various sectors of the Bulgarian economy. The survey was held in online format, guaranteeing the anonymity of the respondents. The larger part of the response group is part of a governmentally owned railway company.
Influence of digitalization upon formation of corporate strategy and new business models of modern organizations
Authors: Akmaeva Raisya , Arykbaev Ravil , Epifanova Nelli , Glinchevskiy Edvard
Published: December 2020

This paper asserts that the issue of change of power in a corporate management configuration is quite urgent; it emphasizes that corporate management should identify the right combination of social interests and corporate business interests within the context of social, economic, and political processes currently taking place in Russia. The pandemic and digitalization exert a profound influence upon those processes; the paper states the fact that the Russian practice of corporate management – how decisions are made and how their execution is controlled – is characterized with a low quality, owing to the practice of “manual management” that prevails at all the hierarchical levels. The main idea of this article is that Russian managers should gradually substitute the traditional hierarchy with a “natural” one, when one’s authority depends not on their official position, but on their contribution to work, when special emphasis is placed on self- control, on establishment of a horizontal control system based on the Agile approach. Managers ought to realize that they should adopt new business models by integrating cutting-edge technologies (digitalization and other forms of work) in all the aspects of their corporate business activities.
The method of the best performer selection based on a competency-based approach
Authors: Bakanova Anna , Shikov Aleksey Nikolaevich
Published: December 2020

One of the important areas that determine the company’s strategic development is human resource management. Information technology in this area is a crucial tool that implements many management functions, eliminating the human factor, facilitating the work of managers and improving performance indicators of work activities. The paper presents a method for finding the best performer based on a competency- based approach. Because of the ontologies use, it was possible to implement a complex multi-criteria search, which became the basis for organizing corporate training and monitoring competencies in the company.
Modern instruments for joint management of international projects in a pandemic
Authors: Shatskaya Elena , Кharchenko Natalia , Popovichenko Mark , Lukyanova Angelina
Published: December 2020

The article provides an overview of modern instruments for business structures in a pandemic and remote work. The most popular and relevant services that allow you to organize work on a project and maintain productivity in self-isolation have been summarized. The features and advantages of software products, which may be the future of project management, have been analyzed. A review, a critical analysis of the possibilities of the digital agenda of the studied countries made it possible to determine the importance of strengthening the interaction of government authorities and business structures in the framework of the implementation of social and economic digital projects for the development of international cooperation between the Republic of Belarus and the Russian Federation. A number of prerequisites were identified as a motivational toolkit for the involvement of business entities and society in the implementation and use of digital technologies on the territory of the union states - the Russian Federation and the Republic of Belarus. A complex of restraining factors of development in the post-pandemic period for the Republic of Belarus and the Russian Federation has been identified and substantiated, which makes it possible to recognize the problems of capacity building in states and the disunity of interests of the subjects of project management.
Achieve synergy of the effects of innovation in the information business
Authors: Kirilchuk Svetlana , Nalivaychenko Ekaterina
Published: December 2020

In the article there are researched the main directions to achieve synergy effects of innovations in the information business. There is shown the method consolidation as a necessary condition for increasing the profitability of companies of the information field, and нейтрализации its negative factors. There are considered problems of intellectual property in the information economic. Based on statistical, studies it was concluded, that specific of software products is their biggest insecurity as intellectual property. So, often the solution of this problem is drawing up terms of patenting and licensing of this activity by the state.
Analysis of the allocative efficiency of social service entities for sustainable development
Authors: Ogorodnikova Ekaterina , Mokronosov Alexander , Kompaniets Maria , Khokholush Maria , Selezneva Maria
Published: December 2020

The relevance of the study lies in the essential role of the social services sector in matters of sustainable economic development. The purpose of the article is to analyze the allocative efficiency of the activities of the social service entities. The methodology of allocative efficiency makes it possible to identify a model of the organizational and economic mechanism of the social services sphere, which implements the tasks of the most efficient use of limited resources. The research results show higher efficiency of government institutions, higher volume of services provided and lower costs per client. This feature is due to the relative mass of service and low costs for the provision of stationary premises, the use of a tender procurement system.
Game mechanics application in the optimization and automation framework of personnel management processes
Authors: Kotsyuba Igor , Loginov Konstantin , Shikov Aleksey
Published: December 2020

The article examines the processes of applying game mechanics to optimize and automate the management and development of company personnel. This allows one to free up resources for solving tasks that require high qualifications, enhances the quality of work performed by reducing the factor of human errors in monotonous actions, and also ensures the engagement and motivation of employees. It is concluded that solving problems of optimization and automation of personnel management processes is an integral part of the competitive companies’ activities. Employees’ motivation and engagement in these processes increase their efficiency and loyalty to the company. The use of game mechanics in the implementation of corporate HR management processes increases the motivation and engagement of employees, and, as a result, greatly enhances their efficiency.