PARAGENESES OF ORE ELEMENTS IN CARBONATE ROCKS JUNCTION ZONE DONBASS AZOV BLOCK UKRAINIAN SHIELD

2020 ◽  
pp. 45-52
Author(s):  
Ksenia Repina ◽  
Keyword(s):  
Carbonate Rocks ◽  
Raw Materials ◽  
Ukrainian Shield ◽  
Statistical Characteristics ◽  
Practical Significance ◽  
Junction Zone ◽  
Geochemical Composition ◽  
Folded Structure ◽  
And Cluster Analysis ◽  
Tectonic Dislocations

Purpose. Study geochemical composition and parageneses ore elements in carbonate rocks articulation zones Pryazovskyi crystalline array Donetsk folded structure. Methodology. Complex statistical methods used SPSS / v19.0 for Windows package – namely, correlation and cluster analysis in determining the parageneses of ore elements in carbonate rocks. Results. The article studies carbonate rocks in which ore occurrences and areas of secondary mineralization distribution were previously established. Statistical data processing of semi-quantitative spectral analysis of samples was carried out. The statistical characteristics of the distribution of ore elements in primary carbonate (limestone, dolomite) and karst zones rocks are determined. An increase in the coefficients of variation and concentration of ore elements in karst formations has been established. It is concluded that an increase in the permeability of carbonate rocks in leaching zones is accompanied by the activation of hydrothermal-metasomatic reactions and contributes to the localization of ore occurrences of secondary mineralization (fluorite, quartz, sulfides). Leaching zones, next to zones of tectonic disturbances, served as the leading channels for hydrothermal solutions, under the influence of which substitution reactions of the main cations of carbonate rocks by ore element cations took place. Repeated activation of hydrothermal processes led to the formation of mudstones. Tectonic dislocations were accompanied by the formation of low-temperature associations of hydrothermal minerals. There are the higher-temperature associations of hydrothermal minerals in carbonate rocks on the areas of andesite-trachyandesite complexes igneous rocks distribution. Scientific novelty. It was established for the first time that the ore occurrences of the Donbass Junction Zone with the Priazovsky block of the Ukrainian Shield can be attributed to the hydrothermal mudstone formation, and their localization is determined by the presence of decompression zones in carbonate rocks. Practical significance. The regularities established can be used to predict leaching zones in carbonate rocks, where there is a decrease in the quality of carbonate raw materials. Key words: Associations of ore elements, concentration coefficients, hydrothermal mineralization, leaching zones, tectonic dislocations, mudstone formation.

scholarly journals Natural factors forming the quality of carbonate raw materials

2019 ◽  
Vol 27 (3) ◽  
pp. 495-503
Author(s):  
K. V. Repina
Keyword(s):  
Carbonate Rocks ◽  
Raw Materials ◽  
Statistical Processing ◽  
Significant Negative Correlation ◽  
Ukrainian Shield ◽  
Practical Significance ◽  
Tectonic Structures ◽  
Magmatic Complex ◽  
Natural Factors

The article is devoted to the study of natural factors that influence the regularities in the distribution of the quality of carbonate raw materials in the deposits of the Articulation Zone of the Donbass Basin with the Priazovskiy block of the Ukrainian Shield. Paleogeographic conditions of sedimentation and the processes of secondary quality change were established by comparing the lithologic-stratigraphic sections of deposits in different parts of the Articulation Zone: from the west (Novotroitskoe deposit) through the center (Elenovskoe deposit) and to the east (Karakubskoe deposit). The variability in the quality of carbonate raw materials was estimated from the results of statistical processing of the chemical analysis of exploratory samples. Geochemical associations were established for carbonate rocks within the stratigraphic horizons of each deposit. The best in quality of all deposits of the Donbass Articulation Zone are the carbonate rocks of the Cl t c horizon. The conditions for their formation were the most stable. They are characterized by a negative connection of the main quality component (CaO) with all other quality indicators. At the same time, the association of indicators associated with a significant positive connection is retained: SiO2, R2O3, S.The process of forming carbonate strata are accompanied by intense silicification processes that relate to climatic changes in temperature, salinity and depth of the sea basin. This is confirmed statistically, because the significant negative correlation between the main component of quality and silica is established on the horizons of carbonate rocks with an increased silica content. The process of dolomitization of the carbonate stratum took place in two stages. At the beginning of the accumulation of the carbonate layer, the sea basin was characterized by lower temperatures and higher magnesium contents than in the subsequent period. Therefore, the lower stratum of the Novotroitskoe and Elenovskoe deposits include sedimentary dolomites. Later, the conditions changed, so there are no dolomites in the Karakubskoe deposit. The second stage of dolomitization is associated with the post-carbon andesite-trachyandesite magmatic complex. The rocks of this complex are found in the carbonate stratum in the form of interplastic intrusions, dikes and stock-like bodies. This contributed to the appearance of sulphide mineralization, zones of silicification and recrystallization of carbonate minerals in spot-dolomitized limestones. The structural-tectonic factor, which is manifested by intensive leaching processes, exerts the greatest influence on the degradation of the quality of carbonate raw materials. In zones of tectonic disturbances, they have maximum extension areas. The structural transformationsthat began in the Donbas after the early Carboniferous disrupted the primary stratified occurrence and quality of the carbonate thickness. The upper Visean horizons are subject to intensively leached, similar to tectonic,melange.The contribution made by these studies to scientific knowledge lies in the identification of the natural factors that determined not only the quality of carbonate rocks, but also indicators of the development stages of the Donbass Articulation Zone of two major tectonic structures - Donbass and the Ukrainian Shield. The practical significance of the results of the work is connected with the fixed possibility of conducting geological and technological mapping and further construction of varietal maps of the deposits of carbonate raw materials.

Structural Analysis and Optimization Design of Motor Hanging Seat Structural Based on Pro/ENGINEER

2013 ◽  
Vol 380-384 ◽  
pp. 39-42
Author(s):  
Shun Xi Gao ◽  
Shu Guo Zhao ◽  
Li Fang Zhao
Keyword(s):  
Structural Analysis ◽  
Objective Function ◽  
Economic Efficiency ◽  
Mass Production ◽  
Optimization Design ◽  
Raw Materials ◽  
Parametric Model ◽  
Production Costs ◽  
Practical Significance ◽  
Displacement Constraints

This paper establishes a parametric model on the motor hanging seat structure by pro / ENGINEER software, and then optimizes the structure of the hanging seat by the weight of the hanging seat as the objective function. Taking into account the stress and displacement constraints in the optimization process, the weight of the hanging seat is greatly reduced after being optimized. It is practical significance to save a large amount of raw materials for the mass production and to reduce production costs and create higher economic efficiency.

scholarly journals DEVELOPMENT OF TOURIST ORIENTED FARMS OF LVIV REGION

2020 ◽  
pp. 36-42
Author(s):  
Olga Tsymbala ◽  
Julia Dorosh
Keyword(s):  
Dairy Products ◽  
Raw Materials ◽  
Relevant Information ◽  
Educational Process ◽  
Practical Significance ◽  
Dominant Group ◽  
Current State ◽  
Tourism Sector ◽  
Scientific Results ◽  
Selection Of

Purpose. Characterize the development trends of the network of tourist-oriented farms which operate within the Lviv region. Systematize information about their specialization and key areas of work, identify and describe the main groups of farms in Lviv region in view of the priority of their activities, as well as reveal the features of the tourist offers for visitors and tourist groups. Methods. The research used the method of analysis to study the literature and information sources on the research topic; the method of scientific systematization is applied to the selection of tourist oriented farms of Lviv region and the characteristic of key areas of their activities; the cartographic method allowed to visualize the location of the studied farms within the region by forming a map of Lviv region with the indication of settlements where the tourist-oriented farms operate. Results. The role, place and significance of tourist-oriented farms for the development of rural tourism are outlined. The farms of Lviv region that are involved in the tourism sector, focused on the reception of tourists and presented in the information space are highlighted. The dominant group of tourist-oriented farms in Lviv region is formed by those farms that are engaged in the cultivation of cows, goats, sheep, specializing in the manufacture and sale of dairy products, especially various types of cheese. At the same time, a number of cheese factories have been formed within the region, operating on the basis of purchased raw materials. A separate group includes honey eco-farms, berry farms, snail farms, ostriches, etc. Systematized data on the specifics, features of the development of the studied farms are presented in the table, the main products and tourist services they offer on the market of tourist services are highlighted. A map of Lviv region with a presentation of the geography of location of tourist-oriented farms within the region are developed. The scientific novelty of the obtained results lies in the generalization of information about the existing tourist-oriented farms of Lviv region and the analysis of their offer on the tourist market. The practical significance lies in the systematization of relevant information about the current state of development of tourist oriented farms in Lviv region. The obtained scientific results can be used in the process of forming tours in Lviv region as well as in the educational process in the training of future specialists in the specialty «Tourism».

Study on the Technical Conditions of Old Newspaper(ONP)/ Recycled-Polypropylene(rPP) Composites

2012 ◽  
Vol 262 ◽  
pp. 418-421 ◽  
Author(s):  
Xiao Lin Zhang ◽  
Xiang Feng Bo
Keyword(s):  
Raw Materials ◽  
Flexural Modulus ◽  
Waste Recycling ◽  
Practical Significance ◽  
Molding Pressure ◽  
Elongation At Break ◽  
Plastic Composites ◽  
Recycled Polypropylene ◽  
The Matrix ◽  
Recycled Plastics

Use of resource-rich wastepaper/recycled plastics as raw materials in the production of wood-plastic composites(WPC) can alleviate the shortage of wood resources, reduce pollution and has a attractive prospect. In this paper, old newspaper fiber(ONPF)/recycled-polypropylene(rPP) Wood-Plastics Composite(WPC) was prepared by means of mixing processing and compression molding. The effects of technical conditions on the mechanical properties of WPC were investigated. The structure of composite was characterized by means of FTIR and SEM. The results show that, Wastepaper and waste-PP can be used as raw materials for preparation of WPC. The suitable preparation process for wastepaper/rPP composites was: wastepaper fiber 20%, blending temperature 175°C, blending time 15min, molding pressure 12MPa, molding temperature 175°C and molding time 10min. In these conditions, tensile strength and flexural strength of wastepaper/rPP composites are 23.6MPa and 28.8MPa respectively, increased by 20.9% and 12.6% compared to those of rPP matrix. The elongation at break of WPC is 10.6%, and the flexural modulus is 1328.9MPa，increased by 7.7% compared to those of rPP matrix. The structure analysis found that there is no chemical reaction between the fibers and the matrix. The research results have important practical significance in the field of printing and packaging waste recycling and utilization, environmental protection and energy saving.

DISTRIBUTION OF MERCURY IN COAL SEAM C7н OF PAVLOHRADSKA MINE FIELD

2020 ◽  
pp. 26-33
Author(s):  
Valerii Ishkov ◽  
◽  
Yevhen Kozii
Keyword(s):  
Coal Seam ◽  
Raw Materials ◽  
Weighted Average ◽  
Correlation Coefficients ◽  
Industrial Area ◽  
Mercury Content ◽  
Ash Content ◽  
Practical Significance ◽  
Regression Equations ◽  
Mine Field

Purpose. Investigation of regularities of mercury distribution in coal of formation c7n of the Pavlogradska mine field. Methodology. Method of atomic absorption analysis of furrow samples of wells. Processing of geochemical and structural-geological data by methods of mathematical statistics using Excel 2016 and Statistica 6.0. The computer program Surfer was used to build maps/ Results. In article considered the distribution of mercury in the coal seam c7н of the Pavlohradska mine field of the Pavlohrad-Petropavlivka geological and industrial district of Donbas. As a result of the study, a map of isoconcentrates and a map of the regional component of mercury content in the coal of the seam were constructed and analyzed. Correlation coefficients between mercury concentration and formation morphological parameters and coal sulfur were calculated. The regression equations between this element and the ash content of coal are also established, which will allow predicting their concentration in the main working coal seams of the geological-industrial area relative to the values of coal ash content. The nature of sulfur distribution is established and the weighted average concentrations and the main descriptive statistics of this element are calculated. Scientific novelty. Peculiarities and regularities of mercury accumulation in coal of formation c7n are revealed. Practical significance. The constructed maps and established correlations are the factual basis for long-term forecasting of mercury concentrations in extracted raw materials and adjustment of technological schemes of coal beneficiation. Keywords: mercury, mine, coal height, ash content, stratum depth, sulfur content, regression equation, correlation coefficient.

Development of the Russian and world industrial economies: theory, practice, specificity of venture business

2021 ◽  
Vol 27 (7) ◽  
pp. 112-121
Author(s):  
I. Krasovskaya ◽  
◽  
E. Malyshev ◽  
F. Shamray ◽  
◽  
...  
Keyword(s):  
Raw Materials ◽  
Industrial Clusters ◽  
Practical Significance ◽  
Simultaneous Increase ◽  
Innovative Development ◽  
Industrial Economy ◽  
Advantages And Disadvantages ◽  
Modern Business ◽  
Business Entities ◽  
Venture Business

The scientific and practical relevance, timeliness and practical and applied relevance of the selected research topics are empirically substantiated by the processes of sustainable development of world labour markets, improving the quality of human resources, increasing the importance of scientific and educational activities, acquiring unique competencies, knowledge and skills by workers of modern business entities, deepening specialization and differentiation of science-intensive enterprises, permanent scientific and technological progress and acceleration of the pace of formation of industrial-industrial clusters and venture business. The theoretical and practical goals of the publication are to study the socio-economic mechanisms for solving the theoretical and practical-applied problems of sustainable innovative development of the industrial economy and the implementation of science-intensive projects characterized by high production and economic uncertainty and significant socio-economic risk, which are not amenable to formalization. The theoretical and methodological basis of the publication was the scientific works of domestic and foreign scientists-researchers of socio-economic algorithms for the development of domestic and world economies of industry, as well as venture business. Scientific novelty lies in the critical rethinking of such a constructive and creative result of the venture business as the formation of public-private partnerships and the author’s interpretation of strategically significant science-intensive segments of the industrial economy (telecommunication technologies, medicine, microbiology, production of substitute products, innovative energy trends, the search for alternative sources of energy supply, etc. etc.). The practical significance of the results obtained lies in the comparative characteristics of the American and Eurasian strategies for the innovative development of industry, as well as the empirical argumentation of their socio-economic advantages and disadvantages. The article reveals a reduction in costs and a regression of transactions between production and economic services of American companies, savings due to the narrow focus of scientific and production processes with a simultaneous absence of material incentives for labour activity and the occurrence of costs due to the regulation of labour functions of workers. The use of a progressive system of remuneration of labour and bonuses to personnel of Eurasian companies has been established in the context of a simultaneous increase in resource and raw materials and monetary costs and the liberalization of in-house management, which are of priority importance for the formation of a strategy for the development of the Russian industrial economy

scholarly journals Analysis of the Effect of Substitution Rate on the Mechanical Properties of Recycled Concrete Hollow Block

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Lijun Yang ◽  
Shanqing Li
Keyword(s):  
Flexural Strength ◽  
Substitution Rate ◽  
Raw Materials ◽  
Failure Process ◽  
Variable Parameter ◽  
Recycled Concrete ◽  
Practical Significance ◽  
Fine Aggregates ◽  
Strength Based ◽  
Hollow Block

In this paper, to study the compressive and flexural properties of recycled concrete hollow blocks, the quality substitution rate of recycled fine aggregates is taken as a variable parameter, and four kinds of substitution rates are designed, which are 0%, 30%, 60%, and 100%. At the same time, one kind of recycled coarse and fine aggregates is designed, and the quality substitution rate is 100%. 110 specimens of MU10 and MU7.5 strength grades are tested for compressive and flexural strength. The failure process and morphology of the specimens are observed to obtain compressive and flexural strength. Based on the test data, the relationship between compressive and flexural strength of recycled fine aggregates with different replacement ratios is analyzed in detail. The main findings are that experiment results show the compressive and flexural strength decrease with the increase of substitution rate of recycled fine aggregates under the same other conditions. The work of the paper is a new reform for the source of raw materials for wall materials, and it is a new way for the reuse of concrete garbage and has important environmental protection significance and engineering practical significance for building energy saving.

Is seawater geochemical composition recorded in marine carbonate? Evidence from iron and manganese contents in Late Devonian carbonate rocks

2019 ◽  
Vol 38 (2) ◽  
pp. 173-189 ◽  
Author(s):  
Zhe Wang ◽  
Wen Guo ◽  
Ting Nie ◽  
Haoran Ma ◽  
Tianzheng Huang ◽  
...  
Keyword(s):  
Carbonate Rocks ◽  
Late Devonian ◽  
Geochemical Composition ◽  
Marine Carbonate ◽  
Iron And Manganese

scholarly journals Map of fossil resins of Ukraine

2020 ◽  
pp. 13-17
Author(s):  
U. Z. Naumenko ◽  
V. M. Matsui
Keyword(s):  
Marine Environment ◽  
Deep Water ◽  
Raw Materials ◽  
Middle Eocene ◽  
Scientific Research ◽  
Ukrainian Shield ◽  
Sedimentary Deposits ◽  
Coastal Marine ◽  
Geological Past ◽  
Fossil Resins

Finding out the conditions of the geological past under which tar secretions were fossilised and primary bio-sedimentary deposits of protoamber were accumulated and amber-succinite placers formed in the marine environment is an important link in scientific research. Insufficient study of amber-succinite as an organic formation, which has gone through a difficult path of transition from wildlife to minerals, leads to irrational use and search for such valuable raw materials and its extraction is much less beneficial than planned. The authors have carried out a comprehensive systematization of accumulated knowledge on amber-succinite and other mineral types of mineral resins in Ukraine and the entire Baltic-Dnipro amber province. The article discusses the creation of a new map of mineral fossil resins in Ukraine. In addition to the known amber-bearing zones, deposits and occurrences of amber, the map carriespaleogeological and predicted loads, is closely related to the formation of both secondary placers of amber-succinite and primary biogenic-sedimentary deposits – resin bodies, transitional composition in the first half of the Middle Eocene (Buchakian time). In order to develop a reasonable forecast of the deposits, the authors identified the root source of amber-succinite placers, which is represented by biogenic-sedimentary deposits of resin bodies.  These deposits were formed in the Lower Middle Eocene during the Buchakian time on land of the Ukrainian Shield, most often within swampy accumulative depressions associated with ancient faults and structural tectonic traps. The conditions of the geological past, under which tar secretions were fossilized and primary biogenic-sedimentary deposits of the protoamber were accumulated, as well as the formation of amber-succinite placers, the first intermediate collectors in the coastal-marine, liman delta and deep-water parts of the paleoshelf, have been clarified. The work carried out by the authors resulted in predicted conclusions about the possibility of finding new areas promising for the discovery of industrial deposits of the most valuable type of fossil resins – amber succinite.

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