bluuebunny/crossref_metadata_2025_split huggingface dataset:
Control of the Silica Photonic Crystal Fiber Production
Authors: Vladimirova D B 
Published: April 2021

Abstract
This paper deals with the problem of optimal control of the drawing process of special silica optical fibers. The research is based on a nonlinear mathematical model of drawing a silica capillary, which is a constituent unit of a photonic crystal fiber. Under well-grounded assumptions, this model is modified and reduced to a linear model. The problem of optimal stabilizing control of the silica capillary drawing is formulated on the basis of such model. An optimality system is written using variational principles. An algorithm for the numerical solution of the optimization system and the results of numerical simulation are proposed.
Optical Controls Application for Diagnostics Corrosion Condition of Reinforced Concrete Structures
Authors: Kuznetsov A A , Ponomarev A V , Fomichenko K I , Sharapova Ya V 
Published: April 2021

Abstract
The increase in the efficiency of methods for non-destructive diagnostics of reinforced concrete structures is explained by a decrease in the labor intensity of the diagnostic process or an increase in the accuracy of assessing the state of the research object. The development of methods that simultaneously reduce labor costs and increase the accuracy of research is of particular interest. The paper proposes the use of video endoscopes and special devices for examining the inner surface of reinforced concrete structures in limited access conditions. The features of using diagnostic equipment are described, an algorithm for examining the contact network supports is developed, and a scheme of a sampling device for spectral diagnostics is presented.
Adaptive properties of Tuvinian short-fat-tailed sheep of the steppe type in the conditions of the Republic of Buryatia
Authors: Biltuev S , Achituev V , Zhamyanov B , Dymbrylova E , Achituev B 
Published: April 2021

Abstract
The article discusses the results of the authors’ study on the assessment of the adaptive properties of steppe type sheep of the Tuvinian short-fat-tailed breed in the conditions of the Republic of Buryatia because of studying their productive qualities and some biological characteristics.
The productivity of onion (Allium cepa L.) in seed crops
Authors: Dvoryashina T A 
Published: April 2021

Abstract
The article deals with the issues of selection and seed production of onion (Allium cepa L.). Breeding studies were conducted in the nursery of the Belgorod state agrarian UNIVERSITY in 2016-2017. The influence of the fraction size on the yield and structure of onion crops (Allium cepa L.) was studied. it was found that plants in the 1st and 2nd families performed better when planting a large fraction of sowing. The yield in these variants was 2.76-3.05 kg / m2, the density of crops was 172-191 plants per 1 m2. Skirmished plants were not observed when planting a large fraction of onion-sowing. Thus, it is recommended to use samples of these 2 families to continue the selection process.
Nitrogen-fixing ability of perennial leguminous grasses in various environmental conditions of the Western Siberia
Authors: Stepanov A F , Chibis S P , Khramov S Yu , Aleksandrova S N , Khristich V V 
Published: April 2021

Abstract
The goal of the research was to determine the nitrogen-fixing ability of perennial leguminous grasses and their use of biological nitrogen to form the crop of fodder in different environmental conditions of Western Siberia. The nitrogen-fixation coefficient (Cf) was determined by the method of comparison with a non-leguminous plant. It has been established that in the southern forest-steppe on meadow-chernozem soil biological nitrogen is used more efficiently using Medicago varia, Galega orientalis, Onobrychis arenaria и Astragalus galegiformis. Plants of these species fix up to 233–379 kg/ha of air nitrogen during the growing season, Cf is equal to 0.56–0.78. The accumulation of symbiotic nitrogen by leguminous grasses is 1.1–4.6 times less in the northern forest-steppe in solonetz fine than in meadow-chernozem soil. Medicago varia at solonetz forms due to biological nitrogen to 58% of yield and Astragalus galegiformis only 10-22%.
Study of the composition of the medicinal plant fruit cappers prickly – “capparis spinosa l.”
Authors: Inagamov S Ya , Tajibaev G M , Tursunova Z B , Sadikova N B , Shadmanov K K 
Published: April 2021

Abstract
The article studies the composition of the medicinal plant grown in the Namangan region (Uzbekistan) capers prickly – “Capparis Spinosa L.” Experimental data have shown that the fruits of the medicinal plant capers prickly - “Capparis Spinosa L.” have an oval shape with a length of 3-6 cm and a width of 1.5 - 3 cm. It was revealed that the shape of the fruit of the capers prickly – “Capparis Spinosa L.” can be different, have a smooth surface, green in color, have a long strip of white along the length. The inner part of the fruit of capers prickly – “Capparis Spinosa L.” at the beginning of ripening is white and in the course of ripening they turn into orange, at the end they become red, fleshy. It was found that in the composition of the medicinal plant “capers prickly” there are such vital macro- and microelements as sodium, potassium, calcium, magnesium, iron, zinc. There are also vitamins such as thiamine, riboflavin, lactoflavin, beta-carotene, retinol, axeroftol, aneurin, choline, pyridoxine, pyridoxine chloride. The rich of the medicinal plant fruit “capers prickly - Capparis Spinosa L.” in macro-, microelements and vital vitamins is the basis for obtaining various drugs in pharmaceuticals.
Efficiency of sanitary treatment of cow’s udder teats before and after milking
Authors: Komarov V Yu , Belkin B L , Andreev S V , Gutsyna A A 
Published: April 2021

Abstract
The analysis of the available bibliographic sources on the study of the value and importance of sanitary treatment of cow’s udder teats before and after milking is carried out. The use of agents for pre- and post-milking treatment of cow’s udder teats is considered in the article. When studying the use of a disinfectant based on chlorine dioxide for the sanitary treatment of the skin of cow’s udder teats the most effective was the dilution of a disinfectant with a concentration of a working solution of chlorine dioxide of 90 mg/l. The product for the treatment of cow’s udder teats after milking provides high preventive effectiveness against mastitis and longer hygienic protection of cow’s udder teats in the intervals between milking.
Silencing of Nicotiana benthamiana phytoendesaturase using dsRNA synthesized in vivo
Authors: Cherenko V A , Filipenko E A , Golubeva T S 
Published: April 2021

Abstract
RNA interference (RNAi) using exogenous double-stranded RNA (dsRNA) has been used to silence the model gene of Nicotiana benthamiana phytoendesaturase. Here we report on an efficient technique for dsRNA synthesis using E. coli HT115 strain. This strain is deficient in RNase III, an enzyme that normally destroys most dsRNA in a bacterial cell and has been engineered to produce big quantities of dsRNA. We also used root treatment for dsRNA delivery to N. benthamiana plants. We found this method to be one of the most efficient ways to deliver dsRNA for plants.
Parameters and operating modes of the coulter group of the sod seeder
Authors: Sysuev V A , Kurbanov R F , Demshin S L , Saitov V E , Doronin M S 
Published: April 2021

Abstract
For the implementation of strip overseeding, they are used by seed drills with disc cutters. Improving the sowing quality due to the compaction of the seed bed and the creation of a soil layer between the seeds and fertilizers is possible when removing the working bodies of seeds and fertilizers of the from the area of the circular knives. To ensure the incorporation of seeds and granulates at different soil levels, it is stage to determine the length of the fertilizer coulter cheeks and the permissible distance between working bodies. Dependencies for calculating rational parameters and operating modes of the developed coulter group are obtained. The calculated parameters make it possible to ensure the minimum spread of fertilizer granules along the planting depth and high stability of the soil layer thickness between the fertilizer and seeds. In the range of operating speeds of the seeder, the rational parameters of the coulter group have the following values: the angle at the top of the fertilizer coulter in the horizontal plane is 15-20°, the lip of the fertilizer coulter is 0.040-0.045 m, the width of the coulter bell is 0.02 m, the minimum distance between the coulters is 0.14-0.16 m.
Weed control of oil flax in the area of unstable moistening in the south of Russia
Authors: Lukomets V M , Bushnev A S , Orekhov G I 
Published: April 2021

Abstract
The work aimed at determining the optimal methods of using herbicides that ensures the control of gramineous and dicotyledonous weeds when growing oil flax in the conditions of unstable moistening of the south of Russia. A single treatment with a pre-emergence herbicide Dual Gold after sowing a crop against monocotyledonous gramineous or with a foliar Tifi at the stage of true leaves development of flax against dicotyledonous weeds contributed to the of 0.07-0.09 t/ha higher yield than in the control with manual weeding. However, the sequential introduction of these preparations led to a decrease in crop yield by 0.14 t/ha on one plot. We noted a slight increase in yield (+0.04 t/ha) under the separate application of Miura graminicide and anti-dicotyledonous herbicide Sekator Turbo, and a decrease in yield (-0.16 t/ha) and seed oil content (-0.8 %) under application of their tank mixture. The separate foliar herbicide treatments should be a priority in weed control of oil flax.
Morphofunctional changes in rabbit thymus with simultaneous vaccination and disinsection
Authors: Silkin I I , Batomunkuev A S , Dashko D V , Tarasevich V N 
Published: April 2021

Abstract
The work carried out a morphometric study of the thymus of rabbits vaccinated with the associated vaccine against myxomatosis and viral hemorrhagic disease of rabbits (VHD) at a dose of 0.5 ml subcutaneously and treated with an insecticide preparation “Stronghold” (selamectin 6%) at a dose of 0.1 ml / kg at the withers … Chinchilla rabbits, live weight 2-2.5 kg, aged 6-8 months were used as experimental material. In total, 20 animals were examined. The thymus was examined by conventional histological methods. The nature of changes in the morphofunctional parameters of the thymus with the combined use of the investigated factors revealed a dependence on the time of application of the drug “Stronghold” in relation to the vaccine. Our studies on rabbit immunogenesis with simultaneous vaccination against myxomatosis and viral hemorrhagic disease of rabbits (VGBD) and treatment with the Stronghold insecticide with the active ingredient selamectin in the form of a 6% solution did not show significant morphofunctional changes in the thymus with increased stress load on a living organism.
Features of the adaptive response of the blood system of boars of Poltava meaty breed of various genotypes in conditions of negative metabolic manifestations
Authors: Garskaya N A , Garanovich I I , Bykadorov P P , Kaplun S V , Tresnitskiy S N 
Published: April 2021

Abstract
The article discusses the issues of the adaptive response of the blood system, namely, the indicators characterizing protein metabolism with negative metabolic manifestations (hyperproteinuria). We studied purebred main boars of the Poltava meat breed of different genotypes: group I - individuals obtained without using the introductory crossing, group II - individuals obtained by the method of introductory crossing using the blood of the Finnish Landrace. Each group was divided into control animals (with a serum protein level of 70-92 g / l) and experimental (the amount of protein in the serum is more than 92 g / l). It was found that only in control animals of “pure” genotypes, all the studied parameters corresponded to the reference values. In control animals with Finnish Landrace blood, the ALT level was increased. These animals were significantly different only in higher protein levels and lower urea levels. The animals of the experimental groups did not differ significantly from each other. Their high serum protein levels were due to increased globulins. According to the Cv analysis, adaptive changes in the blood system in animals were multidirectional depending on the genotype. Animals of “pure” genotypes were more adaptable to these natural and technological conditions.
Development of grafted grape seedlings depending on the length and variety of rootstock
Authors: Titova L A , Magomadov A S , Avdeenko I A , Grigoriev A A 
Published: April 2021

AbstractThe grafted grape culture is highly demanded in industrial production due to a number of advantages in comparison with its own rooted culture. The high cost of production of grafted seedlings and climate change necessitate a change in the planting depth of grape plantations for the Rostov region by reducing the length of the rootstock and the selection of optimal scion-rootstock combinations. In this regard, in 2019-2020, I was on the experimental field of the ARRIV&W – Branch of FRARC, an experiment was laid in order to study the effect of length (from 30 to 45 cm) and varieties (Kober 5BB and Riparia Rupestris 101-14) stock on agro biological indicators of grafted grape seedlings of the Denisovskiy variety. According to the research results, it was found that, depending on the length of the rootstock, with a length of 30 cm, there is an increase in the yield of grafts from the chamber to 82.65%, the survival rate to 82.5% and the final yield of seedlings to 52.4 cm. The greatest influence on the quality of seedlings was rootstock variety. The stock-rootstock combination Denisovskiy × Kober 5 BB has a low seedling yield from 15.5 to 24.6%, which is lower than the Denisovskiy × Riparia Rupestris 101-14 combination with a seedling yield from 36.4 to 52.4%. It can be concluded that, according to the results of the experiment, a positive dependence was revealed in the yield of grafted seedlings of the Denisovskiy variety with a rootstock Riparia Rupestris 101-14 and a rootstock length of 30 cm, in comparison with the widespread rootstock variety Kober 5 BB and a length of 45 cm.
An attempt to estimate the habitat capacity of reintroduction sites for the forest reindeer in the Nizhny Novgorod region
Authors: Bakka S V , Kiseleva N Y , Shestakova A A , Shukov P M , Surov S G , Zykov J V 
Published: April 2021

Abstract
The article is the first attempt to consider the consumption of food supply by the European subspecies of the reindeer (Rangifer tarandus tarandus) during reintroduction in the central part of the Russian Plain on the territory of the Kerzhensky State Reserve in the Nizhny Novgorod Region. On the territory of the adaptation enclosure (122.44 ha), the vegetation was examined in 2015-16 (before the release of deer) and the changes that have occurred over 2 years of keeping animals (2018-20). The enclosure was used by animals for 5776 deer-days, including 3756 summer days and 2020 winter days. It was found that the area of the adaptation enclosure is fully used by the reindeer. Summer food supply have not changed, but a significant degradation of the lichen layer has been revealed. It was shown that the use of lichens by deer for food during the snowless period is minimal. Lichens of the genus Cladonia are the main food for reindeer after the formation of the snow cover. Winter food supply is the limiting factor that determines the habitat capacity. During the 2020 winter reindeer days, 60.02 tons of lichens were used. The daily consumption of lichens by one deer was 29.71 kg. It is shown that the number of deer kept in the adaptation enclosure exceeds the habitat capacity. The possibilities of keeping different numbers of animals with and without winter feeding have been estimated. The area of winter pastures necessary for a reindeer is calculated: 26.94 hectares of natural reindeer lichen communities, or 14.32 hectares in terms of 100% lichen coverage. These data can be used to calculate the potential capacity of reindeer habitats in forest-swamp complexes of the central part of the Russian Plain
Formation of measures for the development of the agro-industrial complex in the context of the transition to sustainable development
Authors: Sergeenko Yu S , Petrov D E , Kombarova E V , Galkina O V , Ukraintseva V S 
Published: April 2021

Abstract
The sustainable functioning of agro-industrial facilities is influenced by many factors, among which the study examined the natural ecological environment, climatic conditions, crisis and epidemiological situations, the employment market and other factors of the internal and external environment. The agro-industrial complex should respond to the identified and analyzed factors in a timely manner and form measures to ensure the transition to sustainable development in the context of ecology, public consumption and preservation of crop yields in agriculture.
Mathematical model of heat accumulation in the substrate and ground of a heliogreenhouse
Authors: Faiziev T A , Toshmamatov B M 
Published: April 2021

Abstract
This article describes the design and mathematical model for heat accumulation in the substrate and soil of a solar greenhouse. The results of the experimental studies are presented, the thermal processes that occur in the described system are considered, and a mathematical model for heat accumulation in the substrate and soil of the solar greenhouse is compiled. The proposed mathematical model facilitates the calculations for the accumulation and distribution of thermal energy in the different layers. Studied the accumulation of solar energy is carried out both in the greenhouse soil - the substrate, and in the heat storage channel. The article discusses the proposed mathematical model of transport processes in a solar greenhouse allows calculating the changes in the temperature of the soil-substrate and the average volumetric temperature for given initial conditions and external influences, depending on time. The discrepancy between the calculated and experimental data on heat transfer in the IC is ± 2 ÷ 7 for heat transfer in the substrate - ± 10 ÷ 15%. The article presents the developed mathematical model of radiation-convective heat exchange of a two-block solar greenhouse with a substrate and heat accumulation is very correct, as evidenced by the comparison of the calculation results using the mathematical model and field experimental data.
Palynoindication of the environment in the impact zone of the Apatit mining processing plant with the use of pollen of Pinus sylvestris L.
Authors: Vasilevskaya N V , Osechinskaya P V 
Published: April 2021

Abstract
Results of analyzing of pollen of Pinus sylvestris in the vicinity of the tailing dump of the Apatit mining processing plant are presented. More than 20 teratomorphs of pollen with various anomalies of development are revealed in the samples, their frequency is very high (80–83%). According to the palynological scale of ecological zoning, the study area can be classified as critically polluted.
Agro ecological and technological assessment of new potato varieties based on in vitro in original seed production
Authors: Terentyev S E , Romanova Ir N , Martynova K V , Knyazeva S M , Perepichai M I 
Published: April 2021

Abstract
We found that by the duration of the growing season (102-129 days) the studied varieties corresponded to their morphobiological characteristics and belonged to the group of early maturing (Gulliver) and mid-ripening (Fritella and Grand) varieties. The analyzed fractional analysis of minitubers showed that under greenhouse conditions, potato varieties can form from 3.9 (Gulliver) to 5.0 tubers (Grand). According to the yield of the fine fraction, the variety Fritella was distinguished (1.4 pcs / clone, according to the yield of the middle fraction, the variety Grand (2 pcs / clone); according to the content in the clone of the large fraction, the variety Gulliver - 2.5 pcs / clone with tuber weight 149.1 g. The mass of tubers of one clone in the studied varieties ranged from 319.0 g to 427.7 g. In terms of biological yield, the potato variety Gulliver stood out - 42.8 t / ha, varieties Fritella and Grand were inferior by 10.9 t / ha and 6.5 t / ha, respectively. The presented calculated data showed that in order to create a seed fund in nurseries of original seed growing, it is necessary to obtain a yield of at least 20 t / ha annually, with a yield of seed fraction of at least 60% and the development of elements of varietal agricultural technology. The article presents the qualitative indicators of the assessment of tubers at the early stages of original seed production, which made it possible to characterize varieties by their use for food and technological purposes. The resulting yield of potato varieties and seed calculations showed that for the successful development of potato growing on an area of 20 thousand hectares and the creation of a seed fund in the amount of 70,000 tons, it is necessary to conduct seed production on a virus-free basis in the region, create 9 elite seed-growing enterprises and 3 research laboratories.
The effectiveness of the use of biological products and micronutrient fertilizers in the technology of cultivation of winter wheat
Authors: Yurina T A , Sviridova S A , Belik M A 
Published: April 2021

Abstract
The results of field studies of the use of biological products and microfertilizers in the cultivation of winter wheat in the production conditions of the Krasnodar Territory are presented. Indicators of a comparative assessment of economic and new schemes for the application of fertilizers and plant protection products from the point of view of agricultural and economic efficiency are given.
On the development of technology for obtaining organomineral fertilizers
Authors: Klyosov D N , Orekhovskaya A A 
Published: April 2021

Abstract
The article deals with the problem of processing organic waste of animal husbandry in order to obtain granular organic mineral fertilizers. A technology was developed for the production of granulated organomineral fertilizers of a wide range based on cattle and pig manure or bird droppings with the addition of zeolite and mineral salts. The resulting fertilizer has good physical properties.
Biochemical features of the influence of distribution and accumulation of heavy metals in the system “soil – plant food – poultry droppings” on the organism of broilers
Authors: Saken A K , Fatkullin R R , Mustafin M K , Daribaeva S A 
Published: April 2021

Abstract
The direct consequences of a complex of structural changes in the form of intensification, industrialization and geographic conditioning of heavy metals that can be utilized through soil destruction often lead to environmental problems and cyclically affect the food chain. In this regard, one of the most important areas of research in the field of poultry farming with the identification of chemical waste is the protection of environmental objects, namely the soil as an object characterized by the accumulative properties of heavy metals, which entail a number of consequences. The normal vital activity of a living organism requires an optimal amount of minerals with trace elements and heavy metals, which creates the need to monitor this cyclic system. The paper presents the results of a study of heavy metals from soil samples, samples of plant food, as well as poultry dung and the effect of their excess or deficiency on the biochemical parameters of the body of chickens. Pursuing the relevance of the content of heavy metals in objects eliminated by the body in the form of excrement, containing substances permeable to the entire body, today it is undergoing intensive study, since plant zones are an integral part of the food chain, accompanied by immuno-biochemical significance for the healthy state and development of birds.