bluuebunny/crossref_metadata_2025_split huggingface dataset:
Formation of the physical state and carbon stocks in organic matter of agrochernozem under the influence of resource-saving technologies
Authors: Kurachenko N L , Vlasenko O A , Kolesnik A A 
Published: August 2019

Abstract
In the field experiment in the conditions of the Krasnoyarsk forest-steppe, the influence of resource-saving technologies on the physical state of agrochernozem and the carbon reserves of organic substance is studied. It is shown that the productive moisture reserves are satisfactory, in the subsoil layer there is a tendency to increase the moisture reserves by 2-5 mm on the minimum and zero background compared with plowing. Moldboard plowing and minimal tillage by fluffy consistency determined the greatest degree of differentiation of the humus horizon. Resource-saving technologies of main tillage contributed to an increase in bulk density by 0.05-0.08 g/cc while retaining the optimal parameters. The method of the main tillage determined the stocks of the above-ground mortmass. The stock of plant residues on the soil surface at the minimal background increased 1.4 times, at zero - 2.1 times compared with plowing. Stocks of phytomass, roots and underground mortmass were not identified by crop cultivation. The stock rations of carbon in mobile humus of agrochernozem increased 1.4-1.5 times against the background of resource-saving technologies due to newly formed humic acids and water-soluble organic matter.
Determination of fibrin age in pathologically changed tissues in porcine reproductive and respiratory syndrome
Authors: Stafford V V , Strel’tsova Ya B 
Published: August 2019

Abstract
The paper presents data supplementing the pathogenesis of porcine viral reproductive and respiratory syndrome. It was shown that the pathological changes taking place are characteristic both for animals infected under natural conditions and for experimental infection of piglets. Pathological data reflecting the development of pathology in the skin and in the internal organs of piglets indicate the development of systemic pathology affecting the hepato-linear, immune, respiratory and vascular system. The use of specific staining for fibrin showed its effect on the development of pathology not only in the respiratory system, but also in immunocompetent tissues. Specific staining for fibrin in histological sections of lung and lymph node tissues made it possible to determine that “young” fibrin coagulates in the tissues for 6 hours and becomes yellow-orange; “Mature” fibrin stays longer in the body for up to 24 hours and is painted depending on the period in orange-red (6-12 hours), bright red (12-18 hours) and red-violet (18-24 hours), then turning into the “old” fibrin, which is painted in purple (more than 24 hours) and grey-blue (more than 48 hours).
The effect of biologized crop rotations on wheat yield in the forest-steppe of Tuva
Authors: Zhulanova V N , Ulyanova O A , Rylova O V , Mongush Sh V 
Published: August 2019

Abstract
The influence of various types of fallow on the fertility of the textural carbonate agrochernozem and wheat yield in the conditions of the forest-steppe zone of Tuva was studied. It is shown that in the forest-steppe natural-climatic zone of the region of sideril fallows, the green manure melt fallow has the highest efficiency. In the forest-steppe in dry years, one of the best predecessors is pure fallow, but the highest yield of spring wheat was obtained after pure fallow with the introduction of manure and green manure traverses. The economic efficiency of various types of fallows in the territory of the Tuva Republic has been determined.
The effect of nanoparticles of biogenic ferrihydrite on the development of Lepidium sativum L.
Authors: Ya Muchkina E , Subbotin M A , Garmashova M K 
Published: August 2019

Abstract
The basis of the study was the assumption that the nanoparticles of biogenic ferrihydrite exhibit biological activity in relation to plant organisms, which can be used in the cultivation of agricultural crops. The research studied the effect of nanoparticles of biogenic ferrihydrite on the development of seeds and seedlings of Lepidium sativum. Structural indicators were studied: masses of the aerial and root parts, linear dimensions of the above ground and root parts of seedlings. The activity of the photosynthetic apparatus was assessed by the relative index of the delayed fluorescence of chlorophyll seedlings of watercress. The germination energy and germination of seeds were investigated. The most pronounced effect of nanoparticles is registered in the increase in the total phytomass of seedlings and the length of the above ground part. A slight decrease in the photosynthetic activity of watercress sprouts was noted. The effect of nanoparticles of biogenic ferrihydrite on seed germination was not manifested.
Risk assessment for interspecies transmission of enzootic bovine leukemia
Authors: Shabeykin A A , Gulyukin A M , Stepanova T V , Kozyreva N G , Ivanova L A 
Published: August 2019

Abstract
Conducted three series of infecting the rabbits with bovine leukemia virus (BLV) using milk and blood from cows having enzootic leukemia with different doses of infecting material and different mode of administration showed a high degree of repeatability of the experiment. The obtained results testify to the ability of BLV to successfully overcome the interspecific barrier when ingested by an alimentary pathway with milk, as well as by the direct injection of infected lymphocytes into the bloodstream.
Genetic diversity of feline leukemia virus
Authors: Komina A K , Zaberezhny A D , Kucheruk O D , Zhukova E V , Guliukina I A 
Published: August 2019

Abstract
Feline Leukemia Virus (FeLV) belongs to retrovirus family, causing various proliferative and immunosuppressive diseases in felines. There are two forms of FeLV: endogenous (enFeLV) and exogenous (exFeLV), the latter has 4 subgroups: A, B, C and T with different receptor specificity. The FeLV-A is the most abundant transmissive form. The FeLVB emerged as a recombinant between provirus FeLV-A and endogenous virus of domestic cats. The FeLV-C appeared as a result of accumulation of mutations in the env FeLV-A gene. The chimeric FeLV-T virus was obtaind as recombination event between 61E and 61C viruses. This review also covers two new recently described subgroups - FeLV-D и TG35.
The influence of “Therapeutic and preventive immunoglobulin” immunostimulant on the veterinary and sanitary assessment of meat and the histological features of the parenchymatous organs of cattle
Authors: Yu Smolentsev S , Kh Ravilov R , Achmetzyanova F K , Gasanov A S , Kuznetsova E L 
Published: August 2019

Abstract
The aim of the research is to study the effect of “Therapeutic and preventive immunoglobulin” immunostimulant on the veterinary and sanitary assessment of meat and the histological features of the parenchymatous organs of cattle. The study showed that pH of the meat in the experimental group was 5.32±0.03, in the control group – 5.43±0.02, the level of amine ammonia nitrogen – 1.19±0.02 and 1.21±0.01 mg in the experimental and control groups, respectively. The peroxidase reaction was positive both in the experimental and control groups, the reaction with copper sulfate was negative. The copper content was 34% more in the experimental group than in the control group (1.80±0.03 mg/kg). The concentration of zinc was 38.5±1.32 and 23.1±0.98 mg/kg in the experimental and control groups, respectively. The levels of iron were similar in the experimental and control groups. The cobalt content in the meat of calves in the experimental group was 24.6% higher than in the control group. The concentration of selenium and magnesium in the meat of calves in the experimental group was higher than in the control group. Such heavy metals as lead, cadmium, mercury and arsenic were not found in the meat of the calves in the experimental and control groups. According to the results of the histological study, the drug does not cause pathological changes in the structure of the liver, kidneys, myocardium, lymph nodes and spleen.
Improving the rice irrigation practice in Priamurie
Authors: Makannikova M V , Lapshakova L A 
Published: August 2019

Abstract
This article discusses the prospects for rice cultivation based on the current food balance data in the Far Eastern Federal District in Russia. Our studies have proven the patterns of the production process and yield of adapted rice cultivars depending on irrigation practices. It has been found that the rice irrigation practice based on surface flooding provides stable grain yield of 4.5-5.0 t/ha and proves the rational use of water resources in the southern part of Amurskaya oblast.
The influence of energoprotein concentrate on biochemical parameters of dairy cows’ blood serum
Authors: Yu Smolentsev S , Semenov E I , Strelnikov A I , Ignateva L V , Rozhentsov A L 
Published: August 2019

Abstract
The article presents the results on the study of the influence of activated protein concentrate BioGumMix on biochemical parameters of dairy cows. Research and production experiment was carried out on the milk farm of the Vakhitov Agricultural Productive Cooperative (APC) in Kukmor region. The experiment lasted for 73 days of which 10 days were a preparatory period and 63 days – registered. 24 dairy cows were chosen for the experiment. The research results indicate that biochemical blood parameters of dairy cows in the experimental group have standardised.
Antibacterial properties of intestinal microbiota of the Japanese sea cucumber Apostichopus japonicus
Authors: Bogatyrenko E A , Dunkay T I , Kim A V , Yunusova I O , Ponomareva A L , Eskova A I 
Published: August 2019

Abstract
The ability of 134 bacterial strains isolated from the digestive system of the Japanese sea cucumber Apostichopus japonicus to inhibit the growth of Vibrio alginolyticus, V. parahaemolyticus, V. splendidus, Staphylococcus aureus, Yersinia pseudotuberculosis, Pseudomonas aeruginosa and Escherichia coli was studied. 17 strains (13%) had different level of antimicrobial activity against investigated test -cultures, 8 (6%) of them were bacteria of the genus Bacillus. The highest antimicrobial activity was demonstrated by the strains Bacillus sp. K32, Arthrobacter sp. A16, Kocuria sp. A34, Bacillus megaterium K13 and Pseudoalteromonas sp. K59. The results indicate a high potential of symbiotic microflora of Apostichopus japonicus to confront pathogenic microorganisms.
Evaluation of background content of priority contaminating substances in atmospheric air at the pre-design stage of construction of landfill solid waste disposal
Authors: Sereda T G 
Published: August 2019

Abstract
The article is devoted to experimental studies to determine the approximate values of background concentrations of pollutants in the ambient air in the area of the proposed construction of solid waste landfill. By preliminary calculations of dispersion priority substances for which it is necessary to determine their background concentration were identified. A number of situ measurements of concentrations in atmospheric air were carried out for the selected substances. According to the results of measurements, the most probable laws of distribution of random variables are determined. Also the quota of air pollution by solid waste landfill on the basis of existing sanitary standards of air quality is determined.
Optimal weight and power parameters of crawler tractors to reduce pressure on the soil
Authors: Yuferev S S , Lesovskaya M I , Olentsova Yu A 
Published: August 2019

Abstract
Crawler and wheeled vehicles are used in a variety of soil and climatic conditions. In the Krasnoyarsk region crawler tractors have a number of advantages. They have a higher traction efficiency, low fuel consumption, and low pressure on the soil. Reducing the pressure on the soil helps to preserve its structure and fertility. This fact is relevant for the agro-industrial complex of Siberia. At present, the vehicle fleet of general-purpose crawler tractors is being reduced. This is due not only to economic reasons, but also the lack of justification for their operation. The paper shows the optimal weight and power parameters. The use of triangular crawler track increases traction efficiency by 3.0% and significantly expands the traction range of effective use of the tractor. For tractors of 4 and 5 classes, the optimal range of change in operating power is 140…175 kW, it corresponds to the optimal range of change in weight 8.5…9.5 tons. For tractors of 5 and 6 classes, optimal interval of changing the operating power is 155…210 kW, it corresponds to the interval of weight change 10, 5…12, 0 tons. Regulation of operating parameters is produced with a change in the coefficient of engine adaptability from 1.2 to 1.4.
Monitoring of drinking water quality from the distribution network of the regional centralized water supply
Authors: Bayanova A A 
Published: August 2019

Abstract
The territory of the Irkutsk region belongs to one of the most endowed with fresh water. Along with this, monitoring studies to provide residents with quality drinking water from the distribution network of centralized water supply revealed an excess of hygienic standards. The discrepancy is due to the excess content in drinking water of iron, manganese, nitrates, magnesium, increased rigidity, the presence of common and thermotolerant coliform bacteria. The main causes of poor quality of drinking water are identified, the sources of systematic pollution of water bodies are called. It was recommended to conduct activities that bring the quality of drinking water into line with the requirements of current legislation.
Environmental monitoring: personalized access approach to the remote sensing information resources
Authors: Kovalev I V , Kovalev D I , Karaseva M V , Brezitskaya V V , Voroshilova A A 
Published: August 2019

Abstract
The article considers the necessity to apply a user profile operating with the earth remote sensing information used in the environmental monitoring. The stages of forming a user profile are presented; a dynamic profile model is given. It allows to take into account both long-term and short-term profiles. The main attention is paid to the following issues in describing the stages of user personalization: monitoring the user’s activity; creating user profiles; evaluating the effectiveness of personification. The proposed approach has been successfully implemented for the environmental monitoring of the power plants.
Dynamics of trichloroethylene adsorption on activated carbons
Authors: Gorelkina A K , Krasnova T A , Timoshchuk I V , Gora N V , Golubeva N S 
Published: August 2019

Abstract
We studied trichloroethylene adsorption from aqueous solutions on activated carbons (SKD-515, ABG, and Purolat-Standart brands), which differ in composition, method of production, structure and surface chemical state. Performance time of the filter layer before the breakthrough decreased in SKD-515 > ABG > Purolat-Standart respectively, which was caused by their porous structure and the nature of functional oxygen-containing groups on carbon surface. The interaction of trichloroethylene with functional groups of carbon surface was also noted. We studied the layer height on efficiency of trichloroethylene adsorption on different activated carbons at a constant flow rate. The reduction of the solution flow rate through the filter contributed to the increase of the dynamic adsorption capacity, which indisputably proved pore diffusion resistance of mass transfer.
Ecological and agrochemical bases of the nitrogen regime of typical chernozem depending on agrotechnical methods
Authors: Stupakov A G , Orekhovskaya A A , Kulikova M A , Manokhina L A , Panin S I , Geltukhina V I 
Published: August 2019

Abstract
In the environment of the southwestern part of the Central Black Earth Region (Central Chernozem) of the Russian Federation, an increase in the content of alkali-hydrolyzable and nitrate nitrogen, as well as an increase in the soil nitrification capacity in typical chernozem, is mainly due to increasing doses of mineral fertilizers, manure aftereffects, the use of perennial grasses in crop rotation as precursors of winter wheat, and for the most part, plowing in the main tillage system. The most noticeable variation in the content of alkali-hydrolysable nitrogen in the soil is 20-50 cm in soil, and soil nitrification capacity in the 0-20 cm layer. Nitrate nitrogen is characterized by the most significant increase in its content in the soil layer 0-20 cm with a combination of mineral fertilizers and manure, especially by plowing. The tendency to increase the nitrate content in the underlying layers is due to the use of an overdose of mineral fertilizer for winter wheat - N120P120K120 + N60 (saturation of 1 ha of the crop rotational area in the grass-growing crop rotation N84P124K124 and in the grain-growing crop rotation N120P124K124) and due to the aftereffects for the fourth year 40 and 80 t/ha of manure (saturation 8 and 16 t/ha). In the grain grass crop rotation, this is common in all studied soil layers — 0–20, 20–50 and 50–100 cm, and in grain cultivation crop rotation, only the 0–20 and 20–50 cm layers.
Nanostructured dolomite flour for soil liming
Authors: Bikkinina L M-H , Ezhkov V O , Yapparov I A , Katnov V E , Ilyasov M M 
Published: August 2019

Abstract
The nanostructured dolomite flour is produced by ultrasonic dispersion of dolomite flour. It is a suspension of evenly distributed mineral particles in deionized water. The visualized surface showed that the minerals had particles of various sizes and shapes. The structure of dolomite flour was represented by a conglomerate of 0.25–1.0 µm. The particle size of nanostructured dolomite flour ranged from 40.0-120.0 nm, the average size was 50.04 nm. The highly dispersed crushing of dolomite flour conglomerates contributed to an increase in the contact area of particles and the soil; it accelerated their interaction. Shift pHsalt. by 0.3 units, and an increase in the grain of spring wheat by 2.0% using a nanostructured analogue in doses of 0.1 g. and 0.05 Hr. were comparable at a flow rate of 10 and 20 times less compared with dolomite flour at a dose of 1.0 Hr respectively.
Influence of cultivation technologies of agricultural crops with the use of machines and tools of domestic and foreign production for the dry area of the South of Russia
Authors: Grechishkina Y I , Golosnoy E V , Esaulko A N , Sigida M S , Ozheredova A Y 
Published: August 2019

Abstract
The problems of improving the tillage systems and crop cultivation technologies are of particular relevance both in terms of energy savings and, in general, resource conservation. The article describes various tillage systems using machines and implements of domestic and foreign production for the arid zone of southern Russia. The initial position in the development of cultivation technology of crops are agroecological requirements of the crop and variety to the growing conditions. Sequential overcoming of factors that reduce crop yields and product quality allows us to form the most optimal growing technology for specific climatic conditions of the economy. The article describes the tillage systems - moldboard, resource-saving using domestic tillage equipment, resource-based on foreign technology and recommended using combined technology, which has different effects on the conservation and accumulation of productive moisture. With the moldboard tillage, these indicators are the smallest, and resource-saving systems give approximately the same results when determining the stock of productive moisture in all phases of crop development. Different tillage systems for crop rotation affect the agrophysical indicators of fertility - aggregate composition, water strength, structural coefficient to the same extent. Moldboard tillage system causes the lowest density of soil in the cultivation of crop rotation in comparison with various resource-saving systems, as for the porosity of the soil, in most cases, these indicators of large values are marked by moldboard tillage. Resource-saving tillage systems significantly complicate the phytosanitary situation in the cultivation of crop rotation in comparison with the moldboard tillage system.
Estimation of surface subsidence during tunneling
Authors: Vershinina L P , Vershinin M I 
Published: August 2019

Abstract
The limitations of the traditional methods of assessing the surface subsidence and the state of structures and natural objects in mining operations are shown. An innovative approach to predicting the surface subsidence during tunneling is proposed. A model has been developed to forecast and estimate the land surface subsidence and deformation at any point of the displacement trough in an arbitrary direction at various stages of the tunneling. The model can be used not only at the design stage of tunnels, but also in the process of their construction.
The organization of the territory of agricultural land use in the South of Russia on an environmental-landscape basis (using the example of an agricultural enterprise)
Authors: Pismennaya E V , Volters I A , Yu Azarova M , Stukalo V A 
Published: August 2019

Abstract
The key position of grain farming and livestock in the South of Russia in the economic sphere is due to the fact that it can be the main factor in ensuring food security and the main condition for the sustainable development of agriculture and the agro-industrial sector as a means of using soil, climatic, orographic and conditions of the land use effectively. These factors make it possible to consider an increase in grain and livestock production for the market a strategic task for the region, and first of all, as an indicator of the most efficient use of the natural resource potential of the territory. An analytical study is conducted on the database management of two multi-parameter systems, the environment and the crop and livestock production state on the basis of reports and statistical materials. The analysis of the current industries state is aimed at identifying decision-making methods for managing agricultural land productivity based on agro-ecological and landscape zoning of the territory of an agribusiness. Currently, there are conditions when it is necessary to switch to a new scientifically based model of the spatial business organization. This will allow implementing the strategy of environmentally adaptive intensification of crop and livestock production. This approach is based on the identification of seven agro-ecological groups of lands and the placement of field, forage and soil-protection crop rotations on them, taking into account the proposed model of the soil-protective complex, reducing the manifestation of water and wind erosion. Such an approach in the use of the territory of an agribusiness will correspond to the grain and livestock specialization of the third agricultural zone of the Stavropol region.
Waste management of dark coniferous trees debarking for producing antibacterial preparations
Authors: Krotova I V , Gulenkova G S , Osmolovskaya N A , Yu Smirnov R 
Published: August 2019

Abstract
The article presents the results of studying the antibacterial activity of fir tree and Siberian spruce bark water extracts. As test objects, pathogenic (3-4 hazard class) and saprotrophic bacteria were used. It has been shown that the studied aqueous extracts of dark-coniferous bark do not exhibit biocide activity against the conditionally pathogenic bacterium Escherichia coli. However, all the other studied bacteria are sensitive to the extracts analyzed both on day 3 and day 13. At the same time, the aqueous extract of the Siberian fir bark has a higher biocide activity against conditionally pathogenic and saprotrophic bacteria in comparison with the aqueous extract of the Siberian spruce bark. The antibacterial activity of aqueous extracts of the studied plants bark is determined by their chemical composition, primarily the presence of substances of a phenolic nature. It has been shown that the studied extracts mainly contain compounds of quercetin, dihydroquercetin and kaempferol.