bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Study of Antiphagocytic Activity of Streptococcus Isolated from Cows During Mastitis and Endometritis
Authors: Loschinin M N , Gorbatov A V , Sokolova N A , Isaev Y G 
Published: April 2021

Abstract
Streptococcal mastitis causes enormous economic damage in dairy farming. Milk loses its nutritional value due to the appearance of pathogenic bacteria in it that causes food toxicosis. In this study we used 28 isolates of streptococci isolated from cows with mastitis and endometritis. Of these, 38.9% belonged to S. agalactae, 33.3% to S. dysgalactae, and S. equi subsp. zooepidemicus - 22.2%. A small number of isolates -5.6% belonged to the species S. equi subsp. equi and S. uberis. in The test with mouse peritoneal macrophages shows that the antiphagocytic activity was 75% for isolates of S. zooepidemicus, 57% for S. agalactiae, and 64% for S. dysgalactiae. At the same time, the phagocytic number and phagocytic index were higher in the phagocytosis of the most strains featured with trypsin compared to the initial ones indicating to the antiphagocytic role of the pathogenic structures presented in them at the stage of bacteria capture. The numbers of factors of streptococci pathogenicity including M-proteins make them able to resist opsonization and phagocytosis
Sweep-Soil Interaction: a Mathematical Model
Authors: Zaripova N A , Soyunov A S , Algazin D N , Kulaeva A G , Kuzmin D E 
Published: April 2021

Abstract
Cutting-edge tillage machinery design involves the evolving theory of implement-soil interaction. This paper proposes a mathematical model that represents the performance indicators of a sweep (soil deformation, draught, contact pressure) as a function of design and operating factors (note: this paper covers low-crown sweeps). Analysis of these equations and the results of field experiments show that increasing the nose angle will reduce the drag and require less force to cut the stubbles. As the cutting angle increases, more force is required to cut through; the penetration ability is directly proportional to cosα.
Assessment of the Use of Robotic Equipment for Extinguishing Fires at Oil Refining Enterprises
Authors: Kargapolova E O , Kuleshov V V , Yu Scuba P 
Published: April 2021

Abstract
The analysis of the assessment of the control of robotic equipment as one of the ways to effectively extinguish fires at oil refineries is carried out. A comparative analysis of the advantages of robotic firefighting equipment from combined fire fighting vehicles has been carried out. The calculation of the economic efficiency of using robotic technology is presented. The profitability of using robots in production is determined. The effectiveness of the introduction of LUF-60 instead of combined extinguishing fire trucks at oil refining enterprises has been substantiated.
Assessment of the Severity of the Last Accident Based on the Fine-Kinney Method
Authors: Kuleshov V V , Yu Skuba P , Ignatovich I A 
Published: April 2021

Abstract
The analysis of existing methods for assessing professional risk, which are divided into quantitative and qualitative. Presented are often used in the field of occupational safety methods for evaluating occupational risks. The article describes the importance of assessing the severity of the consequences of an accident, as one of the components of occupational risk. For this was used the Fine and Kenny evaluation method. Due to of the study was made last analysis of accidents, incidents and accidents in the organization. Based on the results obtained, the total amount of losses of the enterprise was calculated and the level of consequences was determined - very serious
Selecting the Voltage Class for a System of External Power Supply System for the Entire Life Cycle of a Gas Field
Authors: Bogachkov I M 
Published: April 2021

Abstract
This article deals with the problem of voltage class selection taking into consideration all of the life-cycle periods of a gas field based on the data from the existing gas fields in Western Siberia. The incorrect voltage class may hinder the operation of the gas field at the final relief stage. The work aims to develop criteria and algorithms for the selection of the best voltage class for the external power supply system at gas fields taking into consideration their entire life cycle. To achieve the goal set, we dealt with the following objectives: analyzing literature on gas field development technology, analyzing the actual rated electrical load in every life cycle period of the gas fields in Western Siberia; analyzing literature on the methods of determining the voltage class for industrial facilities; analyzing the existing criteria and developing new criteria for the selection of the best voltage class taking into consideration the entire life cycle of the gas fields in Western Siberia; developing a formula for the objective function to calculate the voltage class; developing selection guidelines for the best voltage class of the power supply system of gas fields that would take a number of shifting parameters throughout their life cycles; developing a generic programmatic selection algorithm for the best voltage class, and studying the power mains of the external power supply system at the existing gas fields in Western Siberia. Our research relied on the following methods: experiment planning (complete factorial experiment) and computer programming methods.
On the Issue of Isolated Well Productivity in a Number of Areas of the Republic of Sakha (Yakutia)
Authors: Lemeshev Ya , Sivcev A , Karpova M 
Published: April 2021

Abstract
A brief analytical review of isolated industrial inflows of oil and gas in a number of areas of the Republic of Sakha (Yakutia): Buyaginsky, Kederginsky, Russkorechensky and South Tigyansky. The recorded industrial inflows were suggested to be confined to zones of “flower-type“discontinuous violations. In all the considered areas, promising structures are or were located in zones of subhorizontal tectonic compression and shear stress. As an example, the features of the oil and gas potential of the Yuzhno-Tigyansk heavy oil field are considered in more detail. The model of the “flower type” structure and its isolated industrial oil flow in the South-Tigyansky area. Based on the proposed model of oil and gas potential of the areas, the conclusion is made about the direction of geological exploration in the “flower” structures to the lower potentially feeding areas of the subsurface.
Application of Combined Physical and Electrochemical Methods for Conditioning Diamond-Containing Raw Materials to Improve the Efficiency of Sticky and Foam Separation Processes
Authors: Dvoichenkova G P , Kovalenko E G , Podkamenny Yu A , Chernysheva E N 
Published: April 2021

Abstract
This research work contains a new solution to the urgent scientific issue of increasing the diamond extraction under terms of sticky and foam separations based on combined electrochemical, thermal and ultrasonic effects providing increased technical and economic indicators for enrichment of diamond-bearing kimberlites due to the increased -5 mm-class diamond extraction into concentrates of sticky and foam separation at the average 5%.
Effect of Photo- and Video-Fixation Systems of the Automobile Speed Rate in Orel Region
Authors: Eliseev D V , Kopylov S A , Korol‘ V V , Lapin P A , Pashkova V A 
Published: April 2021

Abstract
The article analyses the reasons for decreased traffic accidents in the Orel Region during 2017-2019 observed during the annual growth of traffic flow intensity. Dependence of the traffic discipline and culture of road users on existence of photo- and video-fixation systems for identification of speed infringements is checked. The methods for analyzing automobile traffic intensity and speed on areas of the motorway with and without video-fixation are used. The measures for further introduction and improvement of photo- and video-surveillance in the Orel Region and other Russian regions are suggested.
Anthropogenic Marine Litter on the Coasts of Primorsky Krai: 12-year analysis
Authors: Vysotskaya M V , Okhotkina V E , Blinovskaya Ya Yu , Vysotsky M V 
Published: April 2021

Abstract
The growing pollution of coastal-marine areas with litter, mainly plastic, is of concern to both the public and the scientific community around the world. The amount of waste in various, even hard-to-reach, coastal areas is increasing annually, as evidenced by the numerous activities carried out regularly within the framework of diverse environmental projects. The unique geographical position of Primorsky Krai makes its coastline attractive for almost all types of marine recreation and, as a result, does not leave aside the growing problem of anthropogenic impact. The 12-year cycle of studies carried out on the coasts of the Primorsky Krai, differing both in physical-geographical and socio-economic conditions, reveals a predominantly “recreational type” of coastal pollution and suggests that there were no statistically significant changes in the total amount of collected waste on the coasts (taking into account the annually increasing cleaning efforts). At the same time, the studies demonstrate the value of the data obtained as a serious basis for the formation of a unified methodology for monitoring marine litter in the coastal zone - the most important methodological stage on the way to solving the problem of pollution of the coasts of not only Primorsky Krai, but also other regions with anthropogenic litter.
Evaluation of the Effectiveness of Placement of Sovereign Wealth Funds of the Russian Federation
Authors: Elyakova I D , Pakhomov A A , Nikolaeva I V , Fedorova E Y 
Published: April 2021

Abstract
This article presents a comparative assessment of the various states approaches on the use of funds from their sovereign welfare, an analysis of the sources of the National Welfare funds allocation in Russian Federation. The article provides an approach to assessing the economic efficiency of using the National Welfare Fund of the Russian Federation which is based on a comparative assessment of the rate of returns dynamics with the effective profitability level of foreign sovereign welfare funds. In unstable conditions sharp decline in world oil prices which are associated with a demand contraction of its consumption, mainly due to COVID-19, studies on the formation, distribution and assessment of the effectiveness of the use of states sovereign national welfare funds are timely and relevant.
Adaptive Selection Tasks in Cattle Breeding in Yakutia
Authors: Chugunov A V , Zakharova L N 
Published: April 2021

Abstract
The article summarizes the results of the authors’ scientific works and their own research on the adaptation of Yakut cattle and their crossbreeds with the Simmental breed to specific climatic and economic conditions of keeping. The paper highlights outstanding fat content (5.5…5.58%), excellent compensatory growth energy with free summer feeding (700…900 g per day), high coefficient of digestion of coarse feed fiber (74%), Yakut cattle’s unique resistance and adaptation to adverse weather, economic conditions of breeding, the degree of their inheritance in crossbreed livestock. The article presents materials for studying the morphobiological composition of blood, thermoregulation, skin and hair cover, development of internal organs, gas-energy metabolism, digestibility and use of feed nutrients. It is indicated that when crossing Yakut cattle with Simmental breed with an increase in genetic generation of crossbreeds, its valuable economic and adaptive qualities disappear. The task of protecting the gene pool of local native Yakut cattle and increasing its livestock and geographic range, improving nutrition concerns not so much its higher productivity, but the preservation of the valuable nutritional qualities of its dairy and meat products as well as of its adaptive potential to local conditions in the offspring. When local Simmental (87% of the population) and Kholmogorsky (12% of the population) cattle breeds are kept with generally accepted methods of artificial selection aimed at increasing productivity and improving hereditary qualities, it is necessary to simultaneously conduct adaptive selection by preserving the valuable qualities of the Yakut cattle gene pool in the offspring.
Subminiature Eddy Current Transducer for Detect Violations of the Internal Structure in Steels
Authors: Dmitriev S , Malikov V , Ishkov A 
Published: April 2021

Abstract
This paper presents the design of the transducer, the action of which is based on the principles of eddy currents and is designed to identify closely located violations of the internal structure in steel parts. According to the authors of the study, the converter operates in conjunction with a specialized software application that includes hardware and software for amplifying the signal and suppressing spurious noise from the eddy current transducer. The application allows you to process the signal received from the device with digital algorithms, which positively affects the ability of the system to differentiate internal structural disturbances. The study included the results of a series of scans of samples with known cracks that are at different distances from each other. The practical limits of applicability and effectiveness of the system are illustrated in terms of detecting various structural violations. Including those located close enough to each other, in particular, closer to the maximum possible resolution distance of defects, determined solely by the geometric parameters of the eddy current transformer circuits, without taking into account mathematical processing.
Effect of feed additions marine and plant origin on growth of poultry
Authors: Vasileva N V , Tsoy Z V , Nikulin Yu P , Nikulina O A 
Published: April 2021

Abstract
The article contains materials of scientific and economic experience on the use of feed flour from Japanese Corbicula and Eastern Galega in feeding young hens. We conducted two scientific research and economic experiments on the inclusion of these additives in the diet of young poultry. Experiments were carried out on young poultry of the Haysex white cross. The purpose of the research work is to study the possibility of including in the diets feed flour from Japanese Corbicula and plant additives made from Eastern Galega. Thus, when feed flour from Japanese Corbicula was included in the diet of young poultry, the following results were obtained: weight gain increased by 14.3-19%. The inclusion of plant-based additives in the diet of young poultry increased the live weight in the experimental groups by 10.5-14.9%.
Possibility Determination of Using Saponite in Agriculture
Authors: Nikitina M V , Popova L F , Nakvasina E N , Romanov E M , Zhuravleva E A 
Published: April 2021

Abstract
The article analyzed the possibility of using saponite as an ameliorant. In a model experiment, the effect of saponite on soil acidity, the content of biogenic elements (nitrogen, phosphorus, potassium), and productivity were studied. We found that introducing various doses of saponite does not affect the accumulation of water in the soil. It does not play the role of a deoxidizer and does not saturate the soil with nutrients, but prevents the removal of mobile nitrogen and potassium from the soil. Saponite does not increase soil productivity, but can affect the green mass productivity.
The application of chelated forms of micronutrient fertilizers in sorghum cultivation
Authors: Denisov Konstantin , Kibalnik Oksana , Efremova Irina , Bochkareva Julia 
Published: April 2021

Abstract
Experimental studies of the effect of chelated forms of fertilizers on sorghum yield in arid conditions have been carried out. It is found out that to increase productivity and improve the main economic characteristics of a crop, it is advisable to use liquid chelated micronutrient fertilizers Reasil Forte Carb-Ca / Mg / B-Amino and Reasil micro Amino Zn as foliar application in the phase of 5-7 leaves (first treatment) with subsequent treatments after 10 days. It is proved that this method provides an increase in the yield of grain and green mass of sorghum by 0.27-0.60 and 27.1-39.9 t/ha, respectively, and also increases the content of valuable amino acids in the green mass: arginine, threonine, isoleucine, valine, and phenylalanine, which in turn increases the nutritional value of sorghum green mass for feeding farm animals. It is concluded that foliar application with micronutrient fertilizers reduces plant stress from unfavorable climatic conditions, which leads to stabilization of yields over the years and partially removes dependence on weather conditions.
Evaluation of morphological indicators of the first mature sturgeon females from eggs in artificial conditions
Authors: Akhmedzhanova A B , Ponomarev S V , Fedorovykh Yu V , Levina O A , Zacharie Miburo , Joseph Butore , Hong Van Nguyen Thi 
Published: April 2021

Abstract
Sturgeon species of fish are a unique branch of the relict fish fauna. Species biodiversity, features of biology, a wide range, nutritional value, all taken together, made it possible to distinguish this group of fish in an independent direction-sturgeon breeding. In the last century, Russia accounted for up to 90% of the world’s stocks of these fish species. According to the number and species composition of sturgeon, the Caspian basin occupied a dominant position. Nevertheless, over the past 15-20 years, there has been a landslide undermining of the unique stocks of sturgeon fish in this reservoir. The main reason for the reduction of sturgeon stocks is the excess of the removal of populations over their replenishment. Against this unfavorable background, it became necessary to form broodstock in order to compensate for the decreasing number of wild breeders. To solve this problem, two main directions have been formed in sturgeon breeding – the domestication of wild fish and the cultivation of mature breeders in artificial conditions on the principle of “from eggs to eggs”. In the article, fish-biological and physiological indices of the first mature females of beluga grown in the natural background annual dynamics of water-medium temperature by the principle “from eggs to eggs”.
Consumption of fodder nutrients and energy by Kazakh white-headed breed steers and its crossbreeds with Herefords
Authors: Kubatbekov T S , Kosilov V I , Rystsova E O , Bolshakova M V , Tadzhieva A V , Simonova E I 
Published: April 2021

Abstract
The article presents the results of the study of the characteristics of consumption and intake of nutrients, energy, and nitrogen by steers of the Kazakh white-headed breed and its different generations crossbreeds with Herefords. The purpose of the study was to identify the most potentially productive crossbreeds of the Kazakh white-headed breed for the meat industry and a detailed study of their nutrient intake. Analysis of the obtained experimental data confirms the dominant influence of young cattle’s genotype on the assimilation of nutrients and energy. According to the results of the experiment, crossbreeds of the first generation (½ Hereford x ½ Kazakh white-headed breed) of the II experimental group and crossbreeds of the second generation (¾ Hereford x ¼ Kazakh white-headed) of the III experimental group surpassed their purebred steers of the Kazakh white-headed breed I (control) group in the assimilability of all types of nutrients. However, the best results were shown by the III experimental group.
Actual aspects of anatomical research of medicinal plant material of Vinca minor L
Authors: Cheryatova Yu S 
Published: April 2021

Abstract
The article presents the results of a microscopic study of the medicinal plant material Vinca minor L. (Apocynaceae), used in the pharmaceutical industry to obtain indole alkaloids with antitumor activity. When carrying out anatomical analysis of the leaves and stems of V. minor, the main anatomical and diagnostic signs was established, this can be used in the identification and assessment of the authenticity of medicinal plants. Analysis of the anatomical structure showed that the leaves of V. minor are dorsoventral; hypostatic sheet plastic. The stomatal apparatus of plants is paracytic. The main vein of the leaf blade is represented by a bicollateral conducting bundle; lateral leaf veins had closed collateral bundles. The cross-sectional shape of the stem is grooved with four ribs. The stem of V. minor was characterized by a non-bundle type of anatomical structure. The peculiarity of the stem structure was the presence of internal phloem. The characteristic marker features of the stem and leaf of the plant include the presence of straight, non-segmented, non-anastomosing lactic acidae with an excretory substance of a greenish-yellow color. The information obtained can serve as a basis for the development of the section “Microscopy” when writing pharmacopoeial articles.
Resistance of sunflower (Helianthus annuus L.) to oxyfluorfen when applied during the growing season
Authors: Fetyukhin I V , Chernenko I E , Avdeenko I A 
Published: April 2021

Abstract
The article reflects the results of studies carried out in the period from 2017 to 2019 in the dry steppe zone of the Russian Federation to assess the resistance of sunflower and the effectiveness of weed control when using oxyfluorfen before sowing and during the growing season of the crop in various doses and tank mixtures. The dynamics of weediness of sunflower crops according to the growing season of the crop and the timing of the use of herbicides and their tank mixtures has been established. The data of accounting for the increase in leaf area, as well as determining the photosynthetic potential of crops and the net productivity of photosynthesis when using herbicides before sowing and during the growing season of sunflower in different doses and tank mixtures are presented. Indicators of sunflower productivity and quality of seeds were determined for the studied schemes of herbicide application. The data obtained from the economic and energy assessment of the effectiveness of the use of oxyfluorfen on sunflower in terms of crop vegetation are analyzed.
Agricultural specialization of the Jewish Autonomous Region as a factor in ensuring food independence
Authors: Stelmakh E V 
Published: April 2021

Abstract
The article examines the indicators of production of basic food products, which characterize the food independence of the Jewish Autonomous Region. Based on the analysis of data for the period from 2010 to 2019, reflecting a decrease in crop and livestock production, it is concluded that the subject is completely food dependent. It is determined that it is necessary to legislatively consolidate agricultural specialization for the region on the basis of comprehensive monitoring of land and arable funds on the territory of the subject.
Efficiency of using malt sprouts in calf diets
Authors: Baydina I A , Kaledina M V , Voloschenko L V 
Published: April 2021

Abstract
The study is aimed at analyzing the effectiveness of the use of malt sprouts (SR) in feeding calves. In the work, indicators of the level of replacement of barley in the composition of experimental samples with malt sprouts are determined. The resulting difference in the increase in live weight of animals and control groups showed the feasibility of using malt sprouts, and the cost of making a standard compound feed was higher than the cost of making experimental compound feed.
Application of silicon-containing preparations for foliar feeding of spring wheat
Authors: Konyuhova E A 
Published: April 2021

Abstract
The results of using silicon-containing preparations: siliplant, controlfit Si and kelik-K-Si for foliar feeding of spring wheat in sod-podzolic soils are presented. It has been confirmed that foliar dressing is an effective technique that provides an increase in yield, mechanical strength of the stem, leaf area and 1000 grain weight. Siliplant has the best result.