bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Chemical and Mineralogical Changes of Soils Composition in the Destroyed Pile Foundations of Russian Architecture Monuments (The example of the Church of St. John the Evangelist)
Authors: Bufeev F K , Demkin I A , Naumov M A , Shubina D D 
Published: March 2021

Abstract
The article is concerned with the study of one of the reasons for the loss of the soils bearing capacity in the Russian architecture monuments foundations (XIV-XVII centuries). It may be caused by the formation of cavities-"bootlegs" as a result of the wooden pile destruction, namely, the soils chemical and mineralogical composition changes on the piles contours. The object of the study is the Church of St. John the Evangelist in the Kamenka village, Moscow Region. The research results can be applied to other architectural monuments of the XIV-XVII centuries. The relevance of the topic is determined by the value of the Russian architecture monuments as the cultural heritage objects.
Geoecological Assessment of Aged Tailings of Loparite Ore Enrichment / Environmental Assessment of Recycling of Loparite Ore Tailings
Authors: Krasavtseva E A , Goryachev A A , Maksimova V V 
Published: March 2021

Abstract
Geotechnical properties and material composition of aged tailings of loparite ore enrichment have been investigated. The heterogeneity of the material composition and contents of valuable components has been established. The average content of loparite in tailings is 1.0%. The effective specific activity of natural radionuclides 226Ra, 232Th and 40K in the studied samples is in the range of 757.23±158.66 Bq/kg. After leaching samples of tailings with distilled water, the concentration of fluorine ions in the water extract significantly exceeded the maximum permissible concentrations for water bodies of commercial fishing importance, as well as for drinking and household use. Phytotesting allowed to determine that the aqueous extracts of enrichment tailings, both the native extract and its dilutions, do not have a significant toxic effect on the growth of higher plants.
The Evolution of the Waters Chemical Composition in the Areas of Lead-Zinc Deposits Mining in East Transbaikalia
Authors: Chechel L P 
Published: March 2021

Abstract
A feature of the studied objects is the formation of waters under conditions of combination in the mineral composition of the tailings of sulfide and carbonate mineralization. The studied drainage waters are mainly fresh (salinity 0.33-1.82 g/L), neutral and alkaline (pH 7.25-8.30). They belong to the bicarbonate, sulfate-bicarbonate, bicarbonate-sulfate and sulfate magnesium-calcium and calcium-magnesium chemical types. Arsenic, zinc, cadmium, lead, antimony and manganese in the microelement composition of drainage waters are predominant. Drainage waters of lead-zinc deposits are characterized by a significant excess of the heavy metals concentrations (As, Zn, Cd, Pb, Sb, Mn, Mo, U, La, Se) over the average composition of leaching zone waters, with a maximum for arsenic – more than 800 and for zinc – 200 times. The waters are saturated with respect to secondary carbonates and arsenates, which indicates the existence of thermodynamic conditions for the removal from the solution of Ca, Mg, Cu, Zn, Pb, As into the solid mineral phase. The neutralizing effect of host rocks carbonates and ore bodies carbonates causes a neutral reaction of waters and low heavy metal concentration.
The Russian Caucasus Xerophyte Gene Protection
Authors: Magomadova R S , Astamirova M A-M , Abdurzakova A S , Dudagova E Sh , Israilova S A , Khanaeva Kh R , Khasueva B A 
Published: March 2021

Abstract
The paper provides a scientific and practical justification of the need to preserve the flora gene pool. International and federal legal documents justifying the need for drawing up and keeping Red Lists are specified along with the Methodical Recommendations for Keeping Red Lists, considering by the constituent entities of the Russian Federation in the preparation of relevant regional publications. The total number of the Russian Caucasus xerophytes is specified – 1,018 vascular plant species (ferns, gymnosperms, angiosperms) belonging to 291 genera and 65 families; a consolidated list of species included in the Red Lists of the Russian Federation and 10 subjects of the Russian Caucasus is given, including 368 species (155 genera and 54 families), 118 of which are protected at the federal level. For the flora of each of the entities considered, the total number of xerophilic species, their representation in federal and regional publications, as well as the percentage of species included in the regional Red Lists are indicated. In the study area, 76 endemic and 17 relict species need protection. Three promising areas have been identified where federal-level SPNRs can be arranged to preserve xerophilic floristic complexes.
Influence of the Model Stratum Water Mineralization on the Process of Carbon Dioxide and Natural Gas Hydrates Formation
Authors: Portnyagin A S , Semenov M E , Kalacheva L P , Ivanova I K 
Published: March 2021

Abstract
The paper presents the results of an experimental study of the natural gas and carbon dioxide hydrates formation in a calcium chloride solution. It was found that the gas saturation of hydrates formed from natural gas and carbon dioxide in 15 mass. % calcium chloride solution, 3 and 4 times less, respectively, of the gas saturation of hydrates obtained in distilled water. The rate of gas hydrates formation in a calcium chloride solution is slightly higher than this one in distilled water.
Analysis of Structural Changes in Food Accessibility Assurance in Russia and Its Macroregions Through Food Security
Authors: Zhupley I V , Schmidt Ju I , Tretiak N A 
Published: March 2021

Abstract
This article dwells upon the food security of the country in the context of structural changes in national and regional agriculture. The physical availability indicators of food for Russia and its Central and Far Eastern Federal Districts were calculated for the period from 2014 to 2018. The authors analyzed structural changes in the production of the main food types across household categories. The authors determined the intensity and orientation of structural changes in food resources. It is established that structural changes in food accessibility assurance in the Far East (as compared with the country as a whole and the Central district) associated with regional production are by and large regressive. The article shows that the physical availability of food products in the Far Eastern region during the sanctions and countersanctions features negative dynamics. To condition positive structural changes in regional agriculture, it is necessary that the government support agricultural businesses of various legal entity types.
State-of-the-Art Methods for Eradication of Pathogenic Microflora in Sugar Production
Authors: Dolgopolova N V , Kaluzhskikh A G , Kotelnikova M N 
Published: March 2021

Abstract
Producing sugar from sugar beet is a combination of physical and chemical processes not related to microbial life. Microorganisms in fact are pests for sugar production, as they negatively affect the production rates, lead to a loss of sucrose, and reduce the resulting sugar output while also worsening its quality; the products of microbial life reduce the pH value of sugar products, which leads to a faster corrosion of the equipment and piping. Microorganisms can come from sugar beet itself as well as from water, air, the staff, or the equipment. Non-compliance with the production standards may as well result in contamination. The entire sugar production process is negatively affected by microorganisms, as they cause a considerable loss of sucrose. Beet chips and juice are a good growth medium for pathogens that consume sucrose as a part of their metabolism.
System of Grain Flow Calculation: Grain Tube - Coulter - Soil
Authors: Demchuk E V , Myalo V V , Koval V S 
Published: March 2021

Abstract
The device of double tape coulter is presented. Calculation of seed motion in the system of grain tube-coulter-soil is given, on the basis of which the scheme of grain flight is developed. According to the described technique an imitation model is created with the help of which the indices of seed uniformity distribution along the length and width of the sown furrow are determined.
A Model for Making a Weakly Structured Multi-Criteria Decision to Choose the Best Scenario for Arranging a Passenger Shipping Line
Authors: Kiseleva E V , Gorchakov Y N , Gusak A Y 
Published: March 2021

Abstract
This paper describes the criteria for assessing the alternative scenarios of arranging maritime passenger shipping; the mathematical methods it uses constitute a systematic approach to decision-making: analytic hierarchy process that produced the alternative scenarios that best suit the criteria, which are subjective expert opinions on the prospects of this operation.
Algorithm of the Software Modules Interaction for Managing the Collection and Transportation of Municipal Solid Waste
Authors: Popov A A , Kuzmina A O 
Published: March 2021

Abstract
The article is devoted to research of automation of collecting and transporting municipal solid waste. The aim of the article is development of methodology for substantiating the selection and evaluation of the economic efficiency of the software for managing the collection and transportation of the municipal solid waste. The mathematical models, which are used to predict the type and amount of waste, are considered. A multiplicity of parameters, characterizing municipal solid waste collecting and transporting, was determined. The resulting multiplicity of parameters allows tracking the implementation of the municipal solid waste collecting and transporting cycle. The end of the cycle occurs at the balance between the amount of municipal solid waste, generated by multitenant apartment management organizations and the amount of municipal solid waste, unloaded from garbage trucks to sorting organizations. The composition and functionality of the software modules set for automation of collecting and transporting municipal solid waste was substantiated. Software modules set uses mathematical models to determine the routes for the garbage trucks movement, which corresponds to the minimum costs. The order of the software modules interaction and the conditions, under which the implementation of the software modules set will be cost-effective, are considered.
Eutrophication Potential of the System: "Catchment Area - Water Body” as a Measure of Sustainable Development of the Aquatic Ecosystem
Authors: Minakova E A , Shlychkov A P , Kondratyev S A 
Published: March 2021

Abstract
A method is proposed for assessing nutrient pollution flows in the catchment - water body system, based on the following indicators: the eutrophication potential of the catchment area and water body, the eutrophication potential of diffuse pollution of the catchment area of a water body, the potential for retaining biogenic pollution in the catchment area of a water body. The components of the eutrophication potential for the catchment area of the river Kazanka, located in the left - bank of the Kuibyshev reservoir. It has been established that the eutrophication potential of the catchment area and the waters of the river Kazanka for nitrogen and phosphorus compounds is 2259 and 170 and 705 and 56 t • year −1, respectively. It is shown that the potential for retaining nutrient pollution in the catchment area of the river Kazanka of nitrogen and phosphorus compounds is 69 and 67%, respectively.
Creation of a Decision Support System for Improving Multimodal Transportation
Authors: Makarova I , Buyvol P , Shepelev V 
Published: March 2021

Abstract
The article presents an approach to solving the problem of choosing a vehicle fleet when delivering goods via the multimodal logistics channel "Producer - Central Warehouse - Shop" using simulating. Transportation costs are considered target functionality. Additional restrictions are the minimum allowable level of loading of a transport unit and the minimum required level of assortment of goods in the store. The optimization experiment carried out has shown the effectiveness of this approach. The developed simulation model acts as the core of the decision support system for improving multimodal transportation.
Effect of Trap Magmatism on the Geochemistry of Gases in the North-Western Regions of the Siberian Platform
Authors: Gordeeva A O , Novikov D A , Dultsev F F , Chernykh A V 
Published: March 2021

Abstract
Results of the studies into the effect of trap magmatism on the geochemistry of gases (free and dissolved in water) and their zoning within the boundaries of north-western regions of the Siberian Platform are reported. The maximal paleotemperatures at the moment of trap intrusion reached 650 °C at the contact for the major productive horizons: Silurian (Devilish), Ordovician (Baikit), and Cambrian (Deltulino-Tanachinsky, Abakunsky, and Moktakonsky). Hydrocarbon gases in the free and water-dissolved phases were subjected to degradation in the most active form. For instance, carbon dioxide dominates, with its content more than 90 vol. % and methane content up to 5 vol. % in intrusion-affected zone at a distance up to 100 m, while at a distance of 250 m CO2 concentration decreases to 30 vol. %, and CH4 concentration increases to 60-70 vol. %. No significant effect of the thickness of intrusion on gas composition was revealed.
Monitoring of Spring Wheat Cultivation Under the Climatic Conditions of Kursk Region
Authors: Deriglazova G M 
Published: March 2021

Abstract
With the help of generalization and mathematical processing of statistical data, the author found that in Kursk Region, the yield of spring wheat from 1995 to 2018 increased more than 2.5 times (from 1.58 metric tons / ha in 1995 to 3.97 metric tons / ha in 2018), although in Russia there were no significant changes in crop yield. While conducting a correlation analysis of the associated data of spring wheat yield in Kursk Region for the period studied, a close relationship was established with the application of basic nutrients (0.84) and with the prevailing weather conditions of a particular year of cultivation (0.86). It was found out that spring wheat grew under optimal weather conditions in 50% of cases. Adverse and favorable weather conditions are formed equally in 25 % of cases of years. Under optimal weather conditions, a high direct linear relationship between yield and the sum of active temperatures is recorded, which is significant at 99% level. Crop shortage in unfavorable years was associated with high air temperature during the entire growing season of the crop and a lack of humidity from seedlings to grain ripeness and an increase in humidity during the harvest of the crop. A linear regression relationship between yield and moisture coefficient was revealed. Thus, the moisture coefficient is the limiting agro-climatic resource of spring wheat yield under the conditions of Kursk Region.
Environmental Plasticity and Stability of Introduced Euramerican Poplar Hybrids Depending on Climate Variation
Authors: Tsarev A , Tsareva R , Tsarev V 
Published: March 2021

Abstract
Euramerican poplars are used in many countries of the world, but they are not always suitable for the cold climate of the northern regions. In particular, they are not winter-resistant enough for Russia’s conditions. Field testing of 23 clones from 10 varieties of these poplars in the forest steppe of the Central Black Earth Region of Russia allowed identifying varieties that are winter-resistant in these conditions. They have high survival and productivity. The study of them during various periods of growth, using the Eberhart and Russell method, made it possible to identify a number of varieties with not only high productivity and survival, but also with considerable environmental plasticity to the changing weather and climatic conditions of the region.
Digital Technologies in Agriculture of Arid Territories of Altai
Authors: Kudryavtsev A , Tumbaeva N , Toropova E 
Published: March 2021

Abstract
The soil resources of the dry Altai steppe and, in particular, their fertility in their evolutionary development are degraded under intense anthropogenic load. The use of digital technologies will help to remove environmental tensions, increase the efficiency of agricultural soil fertility, and reduce the cost of crop production. After evaluating the totality of the considered natural conditions of the basic economy, a matrix of natural factors that determine the choice of a particular farming system is developed, on the basis of which a digital model and a database of the geoinformation system are built. The proposed set of attributes is designed for managing agriculture on an agroecological basis, preserving and reproducing the fertility of soil resources.
The Hydrocarbon Potential of Yakutia is a Real Basis for Export Supplies of Oil and Gas to the Asia-Pacific Export Countries
Authors: Sitnikov V S , Sleptsova M I , Sevostyanova R F 
Published: March 2021

Abstract
The article contains of the history of exploration for oil and gas in Yakutia from the 1930s to the present. Issues related to the discovery of deposits and the creation of a resource base in eastern Russia under various geological conditions are considered. The oil exploration program in Siberia was developed in 1932-34. When analyzing the history of oil and gas exploration work carried out in the Republic of Sakha (Yakutia), with a certain degree of conditionality, a number of stages are distinguished that differ in the prevailing directions of the location of the work, their volume, methodology and peculiarities of integration (1933-1955; 1956-1971; 1972-1984; 1985-1992; 1993 and to the present). During these years, the following most significant geological results were recorded. In the early 30s, the first oil was obtained in the middle reaches of the river. Lena, in the valley of her right tributary of the river. Tuolba. In 1956, the first Ust-Vilyuiskoye gas field was discovered in Yakutia. The initial geological resources of hydrocarbons in prospective areas of Western Yakutia are 24 billion tons, including 10.4 billion tons of oil (2.6 billion tons of recoverable), free gas of 12.1 trillion cubic meters; gas dissolved in oil, 0.8 trillion cubic meters tons; condensate 0.7 billion tons. The predominant part of the initial geological resources of hydrocarbon gas is concentrated in the Vilyui and Nepa-Botuoba oil and gas regions. The situation with the development of proven reserves of oil and gas and the prospects for their further expansion are covered. The data obtained, together with the materials of the work of past years, convincingly indicate that the republic’s subsoil has the largest oil and gas potential, capable of further accelerating the growth of the raw hydrocarbon base and the discovery of new large fields, including oil in fundamentally new areas.
Efficiency of Implementing a New System for Feeding Cows of Holstein Breed
Authors: Khoroshailo T A , Verkhoturov V V , Kozub Y A 
Published: March 2021

Abstract
Feed makes up to 70% of the total cost of feeding livestock. Therefore, high-quality feeding, based on the satisfaction of animals with the necessary level of nutrients and nutrients, is the key to the quality and profitability of the final product. It is known that ruminants have fundamental differences in the physiology of digestion and metabolism, when, due to the enzymatic activity of microorganisms, not only quantitative, but also qualitative characteristics of almost all components of the feed change. In this regard, we conducted production experience in introducing a new feeding system for Holstein cows, first-calf cows. For this, two groups of cows were formed on the basis of analogues and placed in different sections. The cows of the first group were fed according to the old feeding system, i.e., the feed was prepared in SILOKING feeders. Cows of the second group were fed from KONGSKILDE feeders. At the end of the experiment, data were obtained on obtaining the greatest amount of milk productivity of cows of the second group, which were fed 628.0 kilograms according to the new feeding technology.
The SR-XFA Method Used to Determine the Multi-Element Composition of Arctic Aerosols
Authors: Shpartko V I , Popova S A , Legan M V 
Published: March 2021

Abstract
Studying aerosols in the Arctic zone is not only valid due to climate changes that are most pronounced at high latitudes but plays an important role in the investigation of radiative transfer and mass exchange by chemical compounds in the system «continent — atmosphere — ocean». To study the multi-element composition of aerosols in high-latitude areas is a major issue for identifying the regional and global sources of pollution. The studies were performed by the method of modern high-precision X-ray fluorescence analysis using synchrotron radiation (SR XFA). The selection campaign was conducted in the village of Barentzburg in the Svalbard archipelago from 17.12.2018 to 11.04.2019 using AFA-KhA-20 filters. The SR XFA method using synchrotron radiation, developed in the Budker Institute of Nuclear Physics, SB RAS, made is possible to determine the concentrations of 22 elements: K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Se, Br, Rb, Sr, Y, Zr, Nb, Mo, Pb. In addition, it was combined with the data on air mass trajectories in order to determine both the regions from which these elements were transported and the origin of these sources.
Improving the Organization of Taxi Transportation System
Authors: Demakhina E S , Nurtdinov I S , Pogotovkina N S , Tolchina E V 
Published: March 2021

Abstract
The existing system of taxi transportation in the Russian Federation is arranged in such a way that the bulk of the traffic is carried out by so-called aggregators that provide information services to drivers and passengers while they are not carriers by themselves. Thus, most of the passengers are carried out by the drivers with no permission for this kind of activity, that has bad influence on the safety of passengers and road safety in general. Aggregators are increasingly forcing taxi companies out of the market. At the same time, the legal status, rules of activity and responsibility of aggregators are not defined by the current legislation.
This article presents the results of the research aimed at improving the existing system of taxi transportation in order to enhance its security.
Development of a Method for Producing Molded Hydrates of Natural Gas
Authors: Portnyagin A S , Semenov M E , Koryakina V V 
Published: March 2021

Abstract
The article proposes a method for producing natural gas hydrates in the form of cylindrical pellets with a continuous production cycle. The method involves the formation of hydrates in a natural gas atmosphere at pressures from 5 to 8 MPa and a constant temperature equal to + 5 °C, in the form of a hydrate slurry formed by stirring a hydrate-forming liquid in an environment of a hydrate-forming gas. The resulting gas hydrate slurry is collected in a perforated sleeve equipped with a filter and pressed into cylindrical pellets using a hydraulic plunger. The main feature of the developed method is to simplify the technology for obtaining the finished product in the form of cylindrical pellets of natural gas hydrates by placing all production processes within a single sealed tank.