bluuebunny/crossref_metadata_2025 huggingface dataset:
Near-infrared time-series photometry in the field of Cygnus OB2 association
Authors: Roquette J. , Alencar S. H. P. , Bouvier J. , Guarcello M. G. , Reipurth B.
Published: June 2020

We present the results of a J, H, and K photometric variability survey of the central 0.78 square degrees of the young OB association Cygnus OB2. We used data observed with the Wide-Field CAMera at the United Kingdom Infrared Telescope in 2007 (spanning 217 days) to investigate the light curves of 5083 low mass candidate members in the association and explore the occurrence and main characteristics of their near-infrared variability. We identified 2529 stars (∼50% of the sample) with significant variability with time-scales ranging from days to months. We classified the variable stars into the following three groups according to their light curve morphology: periodic variability (1697 stars), occultation variability (124 stars), and other types of variability (726 stars). We verified that the disk-bearing stars in our sample are significantly more variable in the near-infrared than diskless stars, with a steep increase in the disk-fraction among stars with higher variability amplitude. We investigated the trajectories described by variable stars in the color-space and measured slopes for 335 stars describing linear trajectories. Based on the trajectories in the color-space, we inferred that the sample analyzed is composed of a mix of young stars presenting variability due to hot and cold spots, extinction by circumstellar material, and changes in the disk emission in the near-infrared. We contemplated using the use of near-infrared variability to identify disk-bearing stars and verified that 53.4% of the known disk-bearing stars in our sample could have been identified as such based solely on their variability. We present 18 newly identified disk-bearing stars and 14 eclipsing binary candidates among CygOB2 lower-mass members.
An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242
Authors: Bogensberger D. , Ponti G. , Jin C. , Belloni T. M. , Pan H. , Nandra K. , Russell T. D. , Miller-Jones J. C. A. , Muñoz-Darias T. , Vynatheya P. , Vincentelli F.
Published: June 2020

Aims. Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions.

Methods. Within the multitude of observations of Swift J1658.2-4242 during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst.

Results. The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within ∼100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.
The Fornax Deep Survey with VST
Authors: Raj M. A. , Iodice E. , Napolitano N. R. , Hilker M. , Spavone M. , Peletier R. F. , Su H-S. , Falcón-Barroso J. , van de Ven G. , Cantiello M. , Kleiner D. , Venhola A. , Mieske S. , Paolillo M. , Capaccioli M. , Schipani P.
Published: June 2020

Context. We present the study of the south-west group in the Fornax cluster centred on the brightest group galaxy (BGG) Fornax A, which was observed as part of the Fornax Deep Survey (FDS). This includes the analysis of the bright group members (mB < 16 mag) and the intra-group light (IGL).

Aims. The main objective of this work is to investigate the assembly history of the Fornax A group and to compare its physical quantities as a function of the environment to that of the Fornax cluster core.

Methods. For all galaxies, we extracted the azimuthally averaged surface brightness profiles in three optical bands (g, r, i) by modelling the galaxy’s isophotes. We derived their colour (g − i) profiles, total magnitude, effective radius in all respective bands, stellar mass, and the break radius in the r-band. The long integration time and large covered area of the FDS allowed us to also estimate the amount of IGL.

Results. The majority of galaxies in the Fornax A group are late-type galaxies (LTGs), spanning a range of stellar mass of 8 < log(M* M⊙) < 10.5. Six out of nine LTGs show a Type III (up-bending) break in their light profiles, which is either suggestive of strangulation halting star formation in their outskirts or their H I-richness causing enhanced star formation in their outer-discs. Overall, we do not find any correlations between their physical properties and their group-centric distance. The estimated luminosity of the IGL is 6 ± 2 × 1010 L⊙ in the g-band, which corresponds to about 16% of the total light in the group.

Conclusions. The Fornax A group appears to be in an early-stage of assembly with respect to the cluster core. The environment of the Fornax A group is not as dense as that of the cluster core, with all galaxies except the BGG showing similar morphology, comparable colours and stellar masses, and Type III disc-breaks, without any clear trend in these properties with group-centric distances. The low amount of IGL is also consistent with this picture, since there were no significant gravitational interactions between galaxies that modified the galaxies’ structure and contributed to the build-up of the IGL. The main contribution to the IGL is from the minor merging in the outskirts of the BGG NGC 1316 and, probably, the disrupted dwarf galaxies close to the group centre.
Late Cenomanian-Turonian isotopic stratigraphy in the chalk of the Paris Basin (France): a reference section between the Tethyan and Boreal realms
Authors: Le Callonnec Laurence , Briard Justine , Boulila Slah , Galbrun Bruno
Published: June 2020

A chemostratigraphic study (δ13C and δ18O) of the Late Cenomanian and Turonian chalk succession from the “Craie 701” Poigny borehole (near Provins in the Paris Basin, France) provides new high-resolution stable carbon and oxygen isotope data. Correlation of the bentonite horizons and the isotopic trends from Poigny with its English Chalk equivalent allows the development of a precise stratigraphic framework. δ13C and δ18O variations are synchronous and widespread throughout the European epicontinental seas and Tethyan Ocean. In the Poigny borehole, the Oceanic Anoxic Event 2 (OAE 2) is marked by a large and brief positive excursion of carbon isotopes (a carbon isotope excursions: CIE of 3‰ amplitude) without any apparent anoxia in the Late Cenomanian Chalk. Comparisons between different key sections on a North-South transect from the Anglo-Paris Basin to the Umbria-Marche Basin (Gubbio Section, Italy) and the Vocontian Basin (South-East France), suggests that the OAE 2 is linked to an increase in marine organic matter production, modulated by a regional effect on the organic carbon burial rate. Thus, the large positive carbon isotope increase spanning the Middle Cenomanian through to the Middle Turonian, including the salient CIE associated with the OAE 2, reflects a global scale increase in marine productivity that would be concomitant with a major long-term sea level rise. The stratigraphic position of the Turonian-Coniacian boundary can also be better defined by this isotopic study. A comparison of δ18O data between the Anglo-Paris Basin and Tethyan Basin shows high-amplitude, long-term synchronous variations reflecting primary paleo-environmental changes which are independent of local facies, sediment thickness and diagenesis. In particular, a negative shift (−1‰ of amplitude) reflects a warmer climate regime, marking the onset of OAE 2. Two colder phases (+1‰ amplitude each) occurred in the Early Turonian and the beginning of the Late Turonian.
The elemental composition of garlic (Allium sativum L.) and its variability
Authors: Polyakov Alexey , Alekseeva Tatyana , Muravieva Irina
Published: June 2020

Garlic is a valuable source of macroand microelements, especially potassium, calcium, magnesium, phosphorus, ferrum, manganese, selenium, vanadium, copper and zinc. In the dry substance of garlic there is about 4000 mg/kg of potassium (48,1% from mass of all elements contained in cloves), about 1500 mg/kg of phosphorus (18,3%), about 1400 mg/kg of sulphur (17,2%), almost 900 mgs/of kg of calcium (10,7%), about 300 mg/kg of magnesium (3,6%), about 100 mg/of kg of natrium (1,3%), 20 mg/kg (0,24%) of silicon, 16 mg/kg (0,20%) of ferrum, 14 mg/kg (0,17%) of zinc. The content of manganese, aluminum, copper and boron was in the range of 1.8 mg/kg (0.02%) - 6.9 mg/kg (0.084%); chromium, nickel, selenium, cadmium, cobalt, iodine, lithium, vanadium, germanium, lead from 0.22 mg/kg (0.003%) to 0.013 mg/kg (0.0002%; mercury - 0.0043 mg/kg ( 0.00005%). The cultivation of garlic in different climatic conditions leads to a significant change in the content of various elements. In this case, the content of vanadium, boron and cobalt can vary by 20 times, and the content of ferrum and germanium - more than 1000 times. The variability of the elemental composition of garlic depending on cultivar is much less than on the growing conditions. In general, the elemental composition, depending on cultivar, varies 1.1–4.7 times, and depending on the growing conditions, 2.1–57.4 times. Differences in changes in ferrum content depending on cultivar are 1.5 times, and depending on growing conditions - 57.4 times, respectively, copper 1.4 times and 54.0 times, sodium - 1.1 times and 26.8 times. Garlic is characterized by a unique elemental complex. According to indicators of sulfur, zinc, manganese and copper, it is approaching or corresponds to indicators of meat and fish. In this regard, it is necessary to use garlic more widely in the diet of vegetarians and diets that provide for limiting the consumption of meat and fish. It is necessary to develop technologies, methods, recipes that increase the consumption of garlic.
Modelling a cage mooring system with pull-back chains for industrial aquaculture
Authors: Trifanov Alexey , Tikhonov Evgeny , Bazykin Valentin
Published: June 2020

This paper discusses the technical aspects of modeling the cage retention system for industrial fish farming in a pond using pull chains. The purpose of this work: substantiation of the parameters of the holding ropes, the length of the chains and the required mass of the anchors by calculating the tensile forces in the ropes and the reaction of the anchor supports when solving the dynamic problem in an unsteady setting. Dynamic system was developed that takes into account wind, wave and inertial loads acting on all elements of the system: cage, holding ropes, chains, anchors. The force acting on the surface of the cage from the wind is received. For this, a solid-state cage model was developed with equivalent windage. The tensile forces in the ropes and the reaction of the anchor supports in three planes are obtained. The lengths of the chains are selected, ensuring the absence of tearing forces acting on the anchors. Moreover, the calculations were performed in a non-stationary setting with a gradual increase in load. The simulation duration was 60 s. During this time, one resonance phenomenon was revealed: a significant increase in the breaking strength in the rope at 37 seconds of calculation.
Features of the water treatment technology of fish breeding plants in the southern region of the Russian Federation using agricultural waste
Authors: Serpokrylov Nikolai , Smolyanichenko Alla , Starovoitov Sergei
Published: June 2020

One of the main reasons for the decline in fish numbers is the insufficient quality of water used in hatcheries. The degree of purification of recycled water does not meet the requirements for water in pools. Thus, in order to reduce pollution concentrations, it is necessary to develop new technologies for the treatment of recycled water from fish farming plants, including through the integration of a lighting and aeration plant into them, as well as a sorption unit using agricultural waste, namely rice straw
Pastoral aquaculture in the reservoirs of the Kuban basin
Authors: Abramchuk Alexey , Moskul Georgy , Pashinova Natalia , Yurina Natalia , Yurin Denis
Published: June 2020

The article provides calculations and recommendations for fisheries development and improvement of fish productivity of reservoirs in the Kuban basin. The taxonomic composition of water biological resources has been studied and the natural bio-production potential of some reservoirs in the South of Russia has been determined. It is proposed for the purpose of pastoral aquaculture to produce directed formation of the ichthyofauna of reservoirs by yearlings Hypophthalmichthys molitrix, Hypophthalmichthys nobilis, Ctenopharyngodon idella, and as anaddition Cyprinus carpio, Mylopharyngodon piceus, Liza haematocheila with an individual mass not less than 25-30 g, which will allow rational use of forage resources of aquatic ecosystems.
Overview of the application of computer vision technology in fish farming
Authors: Petrov Alexey , Popov Anton
Published: June 2020

The issues that are currently identified in Russia during the implementation of Digital Agriculture project are considered. The main issues that need to be addressed in development of modern digital technologies in the fish farming industry using natural and artificial reservoirs are highlighted. Aqua engineering trends and scientific works of a number of teams that conduct research and use the capabilities of deep machine learning, are analyzed. Particular attention was paid to specific tasks and research results that solve applied problems in the field of aquaculture and fish farming. Conclusions are made about the prospects for implementing these objectives in Russia. The conclusions of scientific teams and new tasks set as a result of scientific experiments are considered. The main directions in the area of commercial fish farming that need active adaptation of computer vision to deal with applied problems, are identified. Questions of efficiency in introduction of neural networks of deep learning are raised, and also conclusions are drawn on introduction of the term “selectivity” to determine the relation of a data set received by a digital method, referred to quantity of the same data which would be received at their collection by means of non-digital technologies.
Effect of probiotic strains upon intestinal immune system under cold stress
Authors: Kozlovsky Yuri , Khomyakova Tatiana , Magomedova Aminat , Kozlovskaya Galina , Zinevich Mariya
Published: June 2020

Gut microbiome changes can be considered as a causative factor of stress-associated intestinal diseases. The aim of the investigation was to study the effects of the oral probiotic strains Lactobacillus casei LB 148 and E. coli EB 387 onto gut microbiota, as well as the intestinal immune system of rats Sprague Dawley in a healthy state and under cold stress. There are no strict official recommendations here in the Russian Federation for preclinical studies of new probiotic strains. Here we describe a method used to estimate the safety and effectiveness of the oral use of a probiotic. It is cheap and simple, so we recommend using it at least for the screening search of effective and safe probiotics. The number of Peyer’s patches in the small intestine of rats in different compartments was counted and then compared between different groups of rats. After cold stress there was a change in the number of Peyer’s patches together with microbiota shifts. Lactobacillus casei LB 148 as well as E. coli EB 387 protected the immune system against the stress effects.
Features of polymorphism of calpastatin and somatotropin genes in young sheep, obtained from crossing ewes of Kalmyk fat-rumped sheeps and dorper rams
Authors: Pogodaev Vladimir , Aduchiev Bator , Kononova Lydia , Aslanukova Maya , Kardanova Irina
Published: June 2020

The article presents the study of polymorphism of the CAST and GH genes, which determine the features of the manifestation of the productive and biological characteristics of sheep with ½ Kalmyk + ½ Dorper blood system. Calpastatin gene polymorphism represented by alleles M and N, whose frequency was 0,65 and 0,35; genotypes MM, MN – 30 and 70% accordingly. The desired NN genotype has not been identified. A relatively uniform incidence of allele N (0,35) CAST gene and B (0,40) GH was established, what contributed to an almost equal distribution of allele frequencies М (0,65) and А (0,60) genes of calpastatin and somatotropin accordingly. The frequency of heterozygous genotypes occurrence by CAST gene composed 0,7. By GH gene the following distribution of genotype frequencies is observed. Frequency of occurrence homozygous АА and heterozygous AB genotypes was equal to and is 0,4, wherein the frequency of occurrence advised homozygous ВВ genotype was 0,2. Among the animals studied, sheep with a complex genotype are most common CASTMNGHAB (40 %). The amount of percent CASTMMGHAA and CASTMNGHAA is in 22,2%. 10% is for genotypes CASTMMGHBB and CASTMNGHBB.
About some possibilities of diagnosing partial failures arising in complex agricultural machinery
Authors: Zotov Alexy , Gritsenko Vadim , Gazizov Andrey
Published: June 2020

The article is devoted to the issue of partial failure in complex technical systems. The authors analyze the diagnostic procedure in agricultural machinery for various purposes, the results of which provide a diagram of a multi-level organization for assessing the condition of equipment. It is also proposed to expand the range of estimated diagnostic parameters for making a more reliable managerial decision. The introduction of expert systems and other similar intelligent systems (for example, expert decision support systems) for diagnosing complex malfunctions is justified.
Standardization of the technological parameters of vibratory abrasion as a tool for process reliability enhancement
Authors: Prokopetz Galina , Azarova Anna , Prokopetz Anatoliy , Murugova Elena
Published: June 2020

This paper deals with the general structure of the technological system of vibration abrasive processing and main issues of ensuring the stability of quality indicators formed in the final vibration abrasive processing. The research results of the working chamber oscillation amplitude influence and processing time on the wear rate of the processing environment are presented. The sample of determining the wear tolerance of the processing environment based on the roughness tolerance is presented.
Improving the efficiency of circular irrigation machines based on models of neural network irrigation control
Authors: Kamyshova Galina , Solovyev Dmitrii , Zatinatsky Sergei , Kolganov Dmitrii , Terekhova Nadezhda
Published: June 2020

The article presents the results of studies of the operational efficiency of circular irrigation machines based on models of neural network irrigation control. Existing irrigation machines are not fully able to realize their advantages in irrigation due to the high degree of energy intensity. Traditional approaches based only on physical modeling of technical processes and relationships often make it difficult to find effective solutions. Intelligent irrigation control is essential for maximum efficiency and productivity. An approach based on a model of data mining is proposed, namely, control of a sprinkler using a neurocontroller. Most irrigation systems use ON / OFF controllers. These controllers cannot give optimal results for different time delays and different system parameters. The proposed controller based on an artificial neural network was created using MATLAB. The main modeling parameters are water pressure and speed. Neurocontrol, leads to the possible implementation of better and more effective management of irrigation machines.
Accounting of random processes when adjusting the overhaul life of machines for reclamation
Authors: Apatenko Aleksey , Sevryugina Nadezhda
Published: June 2020

Application of procedure modeling a physical process in virtual medium jointly mathematical apparatus allows obtaining forecast parameters of the technical condition. Goal of the study is development of predictive assessment of failure risks for machines with a different overhaul life. Accounting of load characteristics for reclamation machine was explained; development of guidelines on formation of info-analytic basis for the unit machine operation was realized. In particular, the period for maintainability can be distinguished, in this case, the reverse nature of the transition seems to be true that reset the previous operation period and return the value of operating life to initial state. For example, the implementation of the return transition according to the values of moral aging is not possible. Further studies are oriented on development of a methodology for monitoring of variation in the technical condition of a unit machine at a hierarchical level, by combination of risk-failure data for individual parts, assemblies, systems, and for entire system of machine. Electronic diagnostic system for collection of data about a current state of the technical system, combined with a computational model of the intensity of change compared to the basic end values, will allow designing predictive models of failure risks.
Improving the design of hydraulic cylinders used in hydraulic equipment for irrigation and drainage
Authors: Slivinskiy Yevgeniy , Radin Sergey
Published: June 2020

The purpose of work – development of practical recommendations for modernization of hydraulic cylinders, widely used in irrigation and drainage and other agricultural equipment design created at the invention level (RU2702205) and the calculations to substantiate its basic geometric parameters. Research methods – to achieve the goal, a modern method of calculating the forces created by the magnetic fields of permanent magnets used in sealing devices of hydraulic cylinder rods was used; practical recommendations are given on the need to use such devices in practice. Research results and novelty – research results are recommended by both domestic and foreign research institutes, design and production structures of agricultural engineering for further study, refinement and its possible practical implementation. Conclusions – analyzing the proposed directions for the modernization of sealing devices of hydraulic cylinder rods, it can be concluded that the developed technical solution allows to increase the operational reliability of hydraulic equipment not only for irrigation and drainage, but also for other purpose of agricultural machinery.
Probabilistic modeling for dynamic processes
Authors: Nesmiyan Andrey , Kravchenko Lyudmila , Khizhnyak Vladimir , Zubrilina Elena
Published: June 2020

The probability of event occurrence can be determined by calculation, however for complex processes, accounting for multiple states is so complex that the probability of the final event cannot be determined differently than by collecting statistical data. This reduces the ability to predict outcomes in any process simulation, which affects the quality of advanced systems. The development of methods for predicting the probability of occurrence of an event when considering complex dynamic processes is a pressing task, the solution of which will help to improve the quality of modeling of technological processes and, as a result, to increase the efficiency of designing machines implementing them. The authors proposed a probability modeling method for dynamic processes, which is a special way of applying probability theory and is workable if the change in the parameters analyzed corresponds to the normal law of distribution. A study carried out on the analysis of the process of sowing corn seeds by vacuum sowing made it possible to predict with reliability more than 95% the probability of formation of “zero seed fodders” depending on their physical and mechanical properties, as well as parameters and adjustment modes of operation of the device.
Evaluation of combines transport support effectiveness for harvesting silage crops in Western Siberia
Authors: Galimov Rufan , Maksimovich Kirill , Tikhonovskiy Vitaliy
Published: June 2020

In this work we calculated the forage harvester required power to provide the smooth operation of transport which are responsible for the green mass transportation. Effectiveness assessment of the enterprise, harvesting forage crops through the positioning and monitoring of transport. Methods are proposed to optimize the harvesting process in order to reduce downtime of forage harvesters and increase economic efficiency.
Modeling of storage processes using Petri nets
Authors: Ganzhur Marina , Dyachenko Nikita , Gazizov Andrey , Otakulov Arthur , Romanov Dmitry
Published: June 2020

Cyber-physical systems are actively explored in the global and domestic scientific community. It is expected that cyber-physical systems will minimize human participation in the production process, as well as in many other areas of society. At the same time, the information security aspect of the interaction of elements remains insufficiently studied. The classical approach to ensuring security is aimed at counteracting a clear destructive information impact - when information security breaches have obvious signs. The risk of failure of one object of the system can lead to critical conditions. Safety modeling of managerial structures is reduced to considering the operability of the functions of the intermediate link and the interaction between objects that make decisions on the management and generating teams. By analyzing these transitions in limiting cases, it allows the use of analysis and synthesis approaches based on structural schemes and logical relationships.
Commissioning tests of the first hydro-generator of the Bajo de Mina HPP (Panama)
Authors: Zuikov Andrey
Published: June 2020

A mathematical model has been developed for calculating the distribution of azimuthal velocities and the shape of the free surface of oil in the compartments of an oil bath of a hydro-generator. The mathematical model of oil flow is verified by comparing the calculated radial-vertical distributions of normalized azimuthal velocities obtained on its basis with the free surface of the oil with the empirical data of third-party authors. The verification showed a good fit between the calculated and experimental distributions, which allows recommending the developed mathematical model for use in engineering practice. Calculations were carried out for the modes of the oil movement in the thrust bearing and the guide bearing of the hydro-generator of the Bajo de Mina HPP. Recommendations are made for the elimination of emergency modes associated with oil overflow through the fencing of the thrust bearing oil bath, which separate oil bath from the shaft of hydro-generator.
Modal analysis of a multiple structure
Authors: Čolak Stanko , Džolan Ante
Published: June 2020

The aim of the work was to carry out a modal analysis of a multiple structure. Own forms of oscillation of the structure for five tones were obtained through the vector iteration process and were presented in table and graphic form. Using the different methods (Time history, SRSS and CQC), a calculation of the displacements was performed. Theoretically, all three methods are described and the results of the calculation for each of them are obtained. A comparison of the results, for the three methods in a given time interval, is graphically shown. Also, the results are compared which are all the same in all three methods. The modal seismic analysis of Spectral Theory was also performed. It can be concluded that by comparing the method of Time history and Spectral theory their results correspond to the maximum modal displacement.
Remote sensing: the method of GIS application for monitoring the state of soils
Authors: Grishin Igor , Timirgaleeva Rena
Published: June 2020

Modern technologies of remote sensing of the Earth from space allow creating new information systems for observing and studying various processes occurring in biogeocenoses and agrocenoses. This is especially important in the case when it comes to the study of grape agrocenoses, since their most important elements are perennial plants and soils that provide a harvest. In this case, it is necessary to create special information technology for monitoring such objects. This will allow forming a series of observations that are uniform in time and space and provide the ability to conduct an analysis with a high degree of reliability in the future. The aim of this work is to develop methodological foundations for the formation of a system for remote diagnostics of soil fertility of grape agrocenoses in connection with the technology of cultivation and bioecological features of cultivated crops in solving problems of improving land use efficiency, as well as the creation of a mock-up of information system for remote monitoring of grape agrocenoses on their basis, aimed at solving tasks of predicting the condition of soils and vineyards, obtaining objective information about predicted fertility, solving problems of increasing land use efficiency, taking into account soil cultivation technologies and bioecological features of cultivated crops, abiotic and biotic factors.
Environmental pollution in Vietnam’s craft villages
Authors: Nguyen Thi Loi
Published: June 2020

The environment and environmental protection in Vietnam in general and in craft villages in particular are an issue that get concerned by the Party, the Government and the entire population in society. The development of craft villages has contributed significantly to socio-economic development, helping to raise incomes and improve the lives of local people. However, the environmental pollution in craft villages is at an alarming rate. According to the verification report of the National Assembly’s Committee on Science, Technology and Environment, only 26.7% of craft villages currently collect industrial wastewater and 20.9% of craft villages collect industrial solid waste. This is a big problem in dealing with environmental pollution in rural areas, especially in traditional craft villages. In this article, the author focuses on issues such as: Actual situation of environmental pollution in craft villages; causes of pollution and proposals of measures to reduce pollution and help sustainable development of craft villages.
Assessment of anthropogenic load and ecosystem stability in the land cadastre zoning of megacities
Authors: Dubrova Stanislav , Zelenkovskiy Pavel , Lebedev Sergey , Podlipskiy Ivan , Chernova Elena
Published: June 2020

With the increasing number of megacities, the constant expansion of their borders, and the often chaotic, unreasonable land-use planning, even those sites with potential recreational use suffer from enormous anthropogenic pressure. Defining the limits of ecosystem stability is one of the most important scientific research, which allows setting permissible anthropogenic impact in the land cadastre zoning of megacities. This investigation presents the integral assessment of net anthropogenic load on the environment and boundaries of the natural soil geochemical background change.
Agroecological efficiency of periodic use of neutralized phosphogypsum in rice crops
Authors: Vizirskaya Maria , Sheydgen Ashad , Akanova Natalia , Zhdanov Vasilii , Tihonova Maria , Buzylev Alexey
Published: June 2020

The purpose of the experiment was to study the influence of periodic using of neutralized phosphogypsum on the fertility of meadow chernozem soils of Krasnodar Territory, achieving of the appropriate level of rice agrocenosis productivity, and the quality of rice grain. The timing of the effective use of phosphogypsum as a phosphorus fertilizer was revealed during the experiment. It was proved that the same level of mobile phosphorus content in rice soils can be achieved by using either phosphogypsum or standard phosphorus-containing fertilizers. Given the fact that nitrogen and potassium fertilizers are already used, using of phosphogypsum provides an opportunity of getting a 6,34 tons/hectare yield of rice (the same result was achieved using N120P80K60 fertilizer). 3 years after re-fertilizing the soil with phosphogypsum we can notice that effectiveness of phosphogypsum in optimization of rice mineral nutrition program contributes to cost savings of 4155 RUB/hectare in comparison with traditional fertilizing system.
Impact of nitrogen fertilizers on protein and amylose content in grain of rice varieties grown in different agrolandscapes of Krasnodar region
Authors: Tumanian Natalia , Kumejko Tatyana , Chizhikova Svetlana , Papulova Elina , Garkusha Sergey
Published: June 2020

The article presents the results of evaluation of rice varieties Flagman, Novator, Favorit, Olimp, Yubileyniy 85, Atlant, Kurazh, Rapan 2, Patriot, Azovsky, Polevik, Kazachok 4, Nautilus, Yakhont, bred in 1996-2019 by Russian breeders and grown in the Abinsky district, Krasnodar region by protein and amylose content in the grain due to the level of nitrogen nutrition during the growing season. The protein content in grain in all varieties with an increase in the applied nitrogen fertilizers from N90 to N120 increased by 0.03-0.56%. In 2016, the varieties Novator, Flagman, Olimp, Atlant, Kurazh, Kazachok 4 were 0.40% and higher; in the varieties Favorit, Polevik, Yubileiny 85, Patriot, Nautilus and Yakhont by 0.03-0.39%. The variety Patriot showed a slight growth trend in PC. In polished rice, PC decreased in two variants of the experiment to 78.991.9% PC, and the indicator was not dependent on the variant. Under the conditions of rice cultivation at N 120, a decrease in the amylose content in grain in varieties by 0.2-0.7% was observed. There was a general trend of a more significant decrease in AC in varieties in 2018. All varieties were assigned to the group of low amylose varieties with AC from 15.1 to 19.0%.
Evaluation of technological characteristics of Crimean native grape variety ‘Shabash’ for brandy production
Authors: Chursina Olga , Zagorouiko Viktor , Legasheva Ludmila , Martynovskaya Alina , Prostak Marina
Published: June 2020

The article presents the results of study of physicochemical and biochemical parameters of the Crimean native grape variety ‘Shabash’ and their influence on the composition of aroma-forming complex of wine materials and young brandy distillates. The phenolic complex of grapes was characterized by higher parameters of technological stock of phenolic substances of grapes, the ability of grapes to give off phenolic substances in grape-crushing, the weight concentration of phenolic substances of the must after maceration. The resulting wine materials also differed by a high content of phenolic substances and the degree of their oxidation. Main features of the composition of the base aroma-forming components of brandy wine materials and distillates, characterized by an increased content of higher alcohols and a reduced content of medium-chain esters, were revealed. A close connection of a number of parameters of grapes with the composition of the volatile components of wine materials and distillates was established. It is shown that the native variety possesses high potential for the fine brandy production using the technology of single variety. The studies conducted are the stage of the scientifically grounded formation of the base of row materials for brandy production in the Russian Federation.
Development of technology for a fermented drink with cancer protective properties
Authors: Belyakova Tatyana , Zabodalova Lyudmila , Antonceva Ekaterina
Published: June 2020

Some plant sources of biologically active substances particularly cruciferous vegetables, both in native form and as extracts, display effects towards carcinogenesis that make these food sources cancer protective and recurrence preventive agents. In the currently developing tendency towards functional foodstuffs like dairy products targeted at nutritional-dependent diseases, development of a dairy beverage containing sulforaphane deserves attention. Creating a recipe for such a product includes: selecting a plant sulforaphane source, testing its compatibility with the milk base, choosing the addition dosage and methods and experimental beverage preparation. In pursuit of these goals in the study, firstly, turnip (Brassica rapa l.) root, an affordable sulforaphane provider, was chosen. Glucoraphanin content in various turnip varieties was determined and the Golden Ball variety selected. Sulforaphane was introduced to milk in turnip purée and aqueous extract forms. The effect of purée/extract dosage on milk fermentation process and the final producťs quality parameters was investigated. Both purée and extract containing products had a pleasant taste with a vegetable note and uniform consistency. Sulforaphane content in 200 g beverage servings was (23.5 ± 2.1) mg and (29.5 ± 0.5) mg (extract), both values approximately one tenth of therapeutic dose estimates, which is enough for cancer preventive purposes.
The effect of granular activated carbon on the physical properties of soils at copper contamination
Authors: Zamulina Inna , Pinsky David , Burachevskaya Marina , Bauer Tatiana , Pshenichnaya Alena
Published: June 2020

In this study, the effect of granular activated carbon on the physical properties of soils containing copper pollution was presented. The result showed activated carbon could exert a positive effect on accelerating the process of restoring the physical properties of the soil, due to the high porosity and the specific surface area. The soil after remediation with the activated carbon showed better structural state and more water-holding capacity.
Organic viticulture as an important aspect of conserving biodiversity in Crimean agrocenoses
Authors: Volkova Marina , Matveikina Elena , Volkov Jakov , Stranisheshevskaya Elena
Published: June 2020

The current status of the global organic viticulture is discussed. The challenge of conservation of species and landscape biodiversity in the Crimea is actualized. The fauna of mites and other insects in the grape agrocenosis of the South Coast of the Peninsula is reported. Biodiversity of mites and other insects in commercial vineyards at different pesticide loads is shown. The role that wild-growing vegetation in territories adjacent to vineyards plays in the agrolandscape of grape agrocenoses is highlighted. The commonness of species diversity of predatory mites in a vineyard and on its outskirts is revealed. The possibility to rely on natural mechanisms for self-regulation of population numbers of phytophagous mites under conditions of organic viticulture is demonstrated.
Probabilistic assessment of the role of the soil degradation main factors in Kuban rice fields
Authors: Safronova Tatyana , Vladimirov Stanislav , Prikhodko Igor
Published: June 2020

As a result of reclamation systems for rice cultivation construction, the conditions of genesis and landscapes soil formation were radically violated. This led to the leaching of active humus and calcium, colloidal particles, nutrients from arable layer to underlying horizons, as a result of which there is a tendency to secondary salinization and solonization of soils. The development of the eluvial glue process and physicochemical parameters change of soils causes a change in the morphological soil profile. Currently relevant are preventing land degradation problems, maintaining and restoring soil fertility. In the article, the authors propose to characterize the rice irrigation system functioning mode from probabilistic point of view. They offer to evaluate the consequences of anthropogenic load, considering operational activities by Poisson stream of a certain intensity. This approach allows to consider uncertainty in terms of probability distributions. The function, characterizing soil quality S(t) was introduced. The function S(t) assumed to be monotonously decreasing. The probability R(S) of achieving a certain soil quality was considered. In case of minimum amount of humus Sm the soil is degrading. In these assumptions the average value expression and probability density of particular soil condition onset duration was received.
Invasive species of the order Hemiptera in agrocenoses of Southern Russia
Authors: Esipenko Leonid , Podvarko Alexander
Published: June 2020

The distribution of invasive species is associated with a change in the distribution boundaries of individual taxa and non-taxonomic groups, with its development of new biotopes, change in the structure and functioning of individual ecosystems. Invasive species in Russia is a wellknown phenomenon. Over the past 50 years, more than 10 herbivorous species have been discovered which are classified as quarantine species. In the near future, the appearance of new aggressive species such asDiabrotica virgifera virgifera Le Conte – western corn bug,Popillia japonicaNewm – Japanese beetle and others is expected.
Content of radionuclides (226Ra, 232Th, 40K, 137Cs) in soils of the North-West region of Russia formed on three types of soil forming rocks
Authors: Mingareeva Elena , Aparin Boris , Sukhacheva Elena , Sanzharova Natalia , Shevchuk Evgeny , Terleev Vitaly , Nikonorov Aleksandr , Akimov Luka
Published: June 2020

The results of a study of the content of natural radionuclides (NR) (226Ra, 232Th, 40K) and technogenic 137Cs in soil samples formed on the most common types of soil-forming rocks of the North-West: lakeglacial (non-boulder and tape clay), glacial and water-glacial deposits are presented. Soil sections laid in the Pskov, Novgorod and Leningrad regions. The granulometric composition in the upper part of the soil profile is lighter than in the parent rock. This is reflected in the NR content in the profile of these soils: with a decrease in the fractions of physical clay and silt, the content of 226Ra, 232Th and 40K decreases. This is due to the fixation of natural radionuclides by secondary clay minerals. According to the increase in the average specific activity of all NRs, the soils form the following sequence: soils on water-glacial deposits soils on moraines - soils on lake-glacial deposits. A comparison of the average specific activity of natural radionuclides and their ranges in the upper part of the soil (0-5, 5-10 and 10-20 cm) and in the parent rock (90-100 cm) revealed a higher content of radionuclides in parent rocks (lake-glacial and moraine deposits). In the soils on water-glacial deposits, no significant difference was found.
AR and VR technologies as tools for the formation of tourist attractiveness in the discourse of the development of the territorial brand “Made on the Don”
Authors: Trubchik Irina , Kudinov Nikita , Gnedina Olga , Popova Oxana , Shpigun Andrey
Published: June 2020

The current work covers the technological and marketing advantages brought by the application of augmented reality to the tourism cluster for the development of the territorial brand “Made on the Don”. Theoretical part is built on the original theoretical framework formalizing media effect of the AR technology. The article explores key concepts from the works of David Alteide and Robert Snow (1979; 1988), Marshall McLuhan (1964; 1967), Bolter and Grusin (1999), and Lefebvre (1984).
Modern ferry crossing as an important element in the development of eco-tourism in Sakhalin
Authors: Kligunov Evgeny , Pozynich Konstantin
Published: June 2020

The Sakhalin region and its ecology, natural features and federal reserves with natural ecosystems, has a high potential in ecotourism, and therefore the problems of operating bridge span structures of the ferry crossing connecting the island with the mainland are becoming increasingly important. This is due to the fact that the traffic flow at the ferry crossing, including off-farm transportation of agricultural goods, has increased significantly. Consequently, the load on the bridge structures has increased. In addition, natural factors play a significant role in the operation of the structures. Therefore, the issue of the durability of bridges has several generalized components, including the mechanical wear along with moral and physico-chemical wear. The paper deals with the topic of the correct and uniform distribution of high load bearing between structural elements of large-span structures, since under the influence of the natural gravity of the structure and the influence of external factors, dangerous damage can occur. As a research task, the authors determined an attempt to assess the load of the lifting mechanisms located on the abutments of the intermediate supports and serving to set the spans in the required position. In case of increase in the mass of spans, overcoming the resulting imbalance can lead to a noticeable increase in the required power of the drive of the mechanisms.
Digitalization of design and construction of agricultural facilities as a basis for ensuring their energy efficiency
Authors: Uvarova Svetlana , Gumba Khuta , Kiseleva Elena , Sonin Yaroslav
Published: June 2020

Energy saving and energy efficiency in modern conditions are an imperative of a stable evolutionary stage in the development of the country’s investment and construction complex, while at the same time creating sustainable competitive advantages for both energy producers and its consumers when implementing a construction investment project. The use of digital technologies is postulated as one of the main resources of energy efficiency. The paper systematizes the resources and effects that are formed as a result of increasing the energy efficiency of construction projects in the agricultural sector. The paper substantiates the necessity and specifics of the information modeling technology application to increase the energy efficiency of objects, and also determines the results of the use of digital technologies, differentiating costs and effects.