scholarly journals Technogenic wastes and ecological problems

2020 ◽  
Vol 3 ◽  
pp. 61-65
Author(s):  
Anvar Aliyev ◽  
Keyword(s):  
Land Reclamation ◽  
Surface Mining ◽  
Ore Deposits ◽  
Raw Material ◽  
Historical Period ◽  
Administrative District ◽  
Technogenic Contamination ◽  
The Republic ◽  
Lesser Caucasus ◽  
Technogenic Wastes

The northeastern part of the Lesser Caucasus encompasses the western part of the Republic of Azerbaijan and is characterized with a prevalence of unique flora and fauna and the availability of rich natural resources, particularly metals. It is known that the long-term exploitation of these resources by surface mining has led to technogenic contamination in the area. Exploitation of ore deposits is associated with the origination of huge hills of waste which cause heavy degradation of pastures, forests, and croplands. A significant part of widely degraded areas in the northeastern Lesser Caucasus is found in the territory of the Gedabek administrative district. This paper deals with the problem of restoration for contaminated lands formed due to raw material extraction on territory of valuable mountain forests and meadows over a long historical period as well as the use of collected technogenic wastes for different purposes (e.g. in land reclamation, construction of motorways etc.).

Ceramic Proppants Based on Ultrabasic Rocks of Kazakhstan Chromite Ore Deposits

2019 ◽  
Vol 946 ◽  
pp. 169-173
Author(s):  
A.A. Biryukova ◽  
T.D. Dzhienalyev ◽  
A.V. Boronina
Keyword(s):  
Oil And Gas ◽  
Mineralogical Composition ◽  
Magnesium Silicate ◽  
Gas Production ◽  
Ore Deposits ◽  
Raw Material ◽  
Chrome Spinel ◽  
Overburden Rock ◽  
Oil And Gas Production ◽  
Silicate Ceramic

The purpose of the work is the obtaining of magnesium silicate ceramic proppants, based on ultrabasic overburden rocks of Kempirsai deposits of chromite ores (Kazakhstan). The chemical and mineralogical composition of ultrabasic overburden rock was studied by chemical, microscopic and X-ray diffraction analyzes. It is established that the main mineral of ultrabasic overburden rocks is serpentine, present in the form of fibrous chrysotile and lamellar antigorite. In the impurities are iron oxides and hydroxides, chrome spinel, carbonates, quartz. Assessment of the use of overburden rocks as a raw material for the production of ceramic proppants was carried out. The sintering interval of overburden rocks was determined at 1280-1300 °C. The sintering firing optimum temperature of ceramics, based on this type of raw material is 1300 °C. It is established that to harden the structure of magnesium silicate ceramic it is necessary to activate the raw material thermally at a temperature of 1000 °C. The influence of binder type on the properties of magnesium silicate proppants, based on the Kempirsai serpentinites was studied. Magnesium silicate proppants, based on ultrabasic overburden rocks, were obtained with the following properties: apparent density – 1.6 g/cm3, strength resistance (52 MPa) – 14%, sphericity and roundness – 0.8; chemical resistance (hydrochloric acid) – 98%, static strength of the fraction 16/20 - 72–118 N/granule. The field of application is oil and gas production, metallurgy and ceramic industries.

The Research of Iron Containing Wastes Modification Process of Leninabad Rare Metals Plant

2021 ◽  
Vol 410 ◽  
pp. 778-783
Author(s):  
Pavel V. Matyukhin ◽  
Daler I. Mirzoev
Keyword(s):  
Chemical Composition ◽  
Building Materials ◽  
Raw Material ◽  
Filling Material ◽  
Rare Metals ◽  
X Ray ◽  
Modification Process ◽  
Before And After ◽  
The Republic ◽  
Enrichment Process

The paper presents the results of ferriferous wastes modification process research carried on the basis of JCS “Leninobad rare metals Plant” located in the Republic of Tajikistan. The wastes for the study were taken from the western tailing. The article presents the justification of the chosen wastes as a filling material in the development of new radiation protective composite building materials. The data on the initial ferriferous chemical composition of the tailing wastes and the chemical composition of the material that passed the enrichment process is presented. The study contains microphotos of ferriferous haematite raw material particles surface before and after completing the modifying process. The paper presents and describes the study of X-ray phase analysis diffractograms of enriched iron-containing wastes before and after the modification process. The current research proves that the enrichment ferriferous wastes particles modification process is possible and as a result it can be used as a filling for the development of new kinds of radioprotective composite materials.

LAND RECLAMATION OF AGRICULTURAL LAND IN THE REPUBLIC OF SAKHA (YAKUTIA) IN THE CONDITIONS OF CLIMATE CHANGE

2021 ◽  
pp. 14-20
Author(s):  
M. I. LOSKIN ◽  
Keyword(s):  
Climate Change ◽  
Water Supply ◽  
Agricultural Land ◽  
Land Reclamation ◽  
Rural Settlements ◽  
Water Pipelines ◽  
Group Water ◽  
Agricultural Water Supply ◽  
The Republic ◽  
The Impact

The current state of agricultural land reclamation in the Republic of Sakha (Yakutia), its role in agricultural production of the republic, taking into account the impact of climate change on irrigation facilities, is considered. It has been established that at present in the sphere of public administration in the field of land reclamation in the republic there are estuary irrigation systems, drainage systems and agricultural water supply facilities, as well as group water pipelines for water supply of rural settlements and irrigation of agricultural land.

scholarly journals Localization of enterprises for primary processing of milk in Almaty region

2021 ◽  
Vol 3 ◽  
pp. 13-23
Author(s):  
G.U. Akimbekova ◽  
◽  
A.B. Baymuhanov ◽  
U.R. Kaskabaev ◽  
◽  
...  
Keyword(s):  
Dairy Products ◽  
Dairy Industry ◽  
Raw Material ◽  
Agricultural Cooperatives ◽  
Milk Processing ◽  
Existing Problems ◽  
Technological Chain ◽  
The Republic ◽  
Production Capacities ◽  
Potential Reserve

The purpose-on the basis of the analysis of the current state and location of enterprises in the dairy industry of the republic and Almaty region, in particular, to identify the main factors that hinder its development, to develop recommendations for solving the existing problems. Methods - monographic, computational-constructive, analytical, economic-statistical, logical generalization. Results - research confirms the underdevelopment of the infrastructure for effective promotion of dairy products from producer to consumer along the production-processing-sale technological chain, especially primary milk processing; often there is a discrepancy between the required proportions between the existing production capacities of milk processing enterprises and the level of development of their raw material zones. Based on production potential of each district of a specific region and calculation of the population's demand for dairy products, a forecast for creation of agricultural cooperatives (APC) of dairy direction for purification of milk from mechanical impurities, cooling, storage and transportation in the context of districtsis presented. It is necessary to create 77 APC for the period 2021-2022, incl. 64 cooperatives for primary milk processing. Conclusions - it is recommended to merge small farms into agricultural cooperatives. The economic efficiency of organizing a cooperative milk collection point at the district level has been justified. Based on the study of the existing schemes for location of milk processing enterprises, proposals have been developed for the localization of new cooperative milk collection points in the territorial units of the region. Dairy industry enterprises need investments to renew their fixed assets. The authors note that the possibilities and advantages of cooperative principles and the potential reserve of agricultural cooperation are not yet fully realized.

scholarly journals Activities of the Ministry of Internal Affairs of the Ukrainian SSR on Combating Economic Crime in the Middle of 1950s

2021 ◽  
Vol 81 (2) ◽  
pp. 13-20
Author(s):  
V. A. Grechenko
Keyword(s):  
Criminal Policy ◽  
Economic Crime ◽  
Practical Significance ◽  
Political Regime ◽  
Historical Period ◽  
Legal Analysis ◽  
Legal Literature ◽  
Archival Documents ◽  
Internal Affairs ◽  
The Republic

The relevance of the research topic is due to theoretical and practical significance of the problems of combating economic crime in modern conditions. In this regard, the issue of the effectiveness of the modernized police in accordance with the new tasks is of great importance. The original experience of combating economic crime was gained in previous years, but especially specific in this case were the 1950s, when there was departure from Stalin’s criminal policy, when the liberalization of the political regime and economic reforms began. In general, the country had a new political and economic situation. Various perpetrators also tried to take advantage of this, so the fight against both criminal and economic crime continued to be relevant in the new conditions. This topic is not enough studied in the historical and legal literature. Economic crime has been studied in the article in the sense that it was exactly in the specified historical period. For the first time in the historical and legal literature we studied the activities of the police to combat economic crime in the middle of 1950s, demonstrated certain achievements and shortcomings in this work, its management by the Ministry of Internal Affairs of the Ukrainian SSR. The historical and legal analysis of the normative acts regulating the work of militia in the specified sphere has been carried out. New archival documents have been introduced into scientific circulation, which made it possible to expand and deepen the scientific understanding of police activities during this period, to give it greater objectivity and reliability. The main attention has been paid to the fight against economic crime by the Ministry of Internal Affairs of the Ukrainian SSR; the author has demonstrated the shortcomings observed by the Ministry in this work, the ways to overcome them. It has been emphasized that the analysis of these phenomena by the staff of the Ministry of Internal Affairs was not always in-depth; there were repetitions and superficial judgments. The data characterizing the state of economic crime in the Republic in 1954-1955 has been provided.

scholarly journals PERSPECTIVES FOR DEVELOPMENT OF TECHNICAL BUILDING STONE- LIMESTONE IN THE REPUBLIC SRPSKA

2015 ◽  
Vol 1 (12) ◽  
Author(s):  
Slobodan Majstorović ◽  
Vladimir Malbašić ◽  
Miodrag Čelebić
Keyword(s):  
Raw Materials ◽  
Production Capacity ◽  
Mineral Resources ◽  
Building Stone ◽  
Raw Material ◽  
Material Base ◽  
Standard Quality ◽  
The Republic ◽  
Fragmentation Of Production ◽  
Republika Srpska

Curent situation of raw material base and study of limestone like construction stone deposits in the Republic of Serbian were relatively poorly considered during the last decades, and the main problems are the following: low production capacity fragmentation of production, needs for raw materials homogenization and delivering of standard quality, undeveloped market, the recession of the domestic economy and the economies in the region, the relatively low level of exploration by many deposits, especially lack of knowledge of the occurrence legality for certain types and quality of raw materials and lack of complete quality indicators for raw material, which sometimes causes the utilization of only the highest quality deposit parts.This paper provides an overview of active quarries in the Republic Srpska with exploitation of limestone like technical building stone and present an attempt to determine the basic quantitative and qualitative characteristics of the raw material and the current working conditions at these quarries. The purpose of such a review would be in an effort to create a clearer picture about production, market, social and other aspects of the limestone exploitation in the Republika Srpska and the realistic possibilities of maintaining and developing of these mineral resources utilization, which can certainlybe interesting for the development of many other industries in the Republic Srpska.

scholarly journals STUDY OF THE FLAVONOID COMPOSITION AND BIOLOGICAL ACTIVITY OF HAWTHORN`S LEAVES CRATAEGUS PONTICA

2021 ◽  
pp. 201-209
Author(s):  
Kamola Vakhabjanova Raimova ◽  
Nodira Gulomzhanovna Abdulladzhanova ◽  
Farrukh Nazimovich Toshpulatov ◽  
Nurali Azamovich Ergashev ◽  
Alimzhan Davlatbaevich Matchanov
Keyword(s):  
Antioxidant Activity ◽  
Raw Materials ◽  
Liver Mitochondria ◽  
Dry Mass ◽  
Polyphenolic Compounds ◽  
Raw Material ◽  
Rat Liver Mitochondria ◽  
Mountainous Regions ◽  
Flavonoid Composition ◽  
The Republic

The results of studies of the content of polyphenolic compounds and their antioxidant activity in the Pontic hawthorn plant Crataegus pontica K.Koch., growing in the mountainous regions of the Tashkent region of the Republic of Uzbekistan are presented. The collection of raw materials took place in the spring at the beginning of October 2019 and at the end of April 2020. The conditions for the isolation of polyphenolic compounds were selected under various conditions. It was shown that the optimal content of polyphenols is extracted with 70% acetone, followed by fractionation of the aqueous residue with ethyl acetate and precipitation with hexane. It was shown that in the plants harvested in spring, the amount of polyphenols was 4.28%, and the collected volume was 2.6%, of the air-dry mass of the raw material. Chromatographic methods (BC and TLC) revealed that the composition of plant leaves collected in spring contains more polyphenols than those collected in autumn. This plant contains compounds belonging to the class of flavonols, phenolic acids and flavan-3-ols. Polyphenols were identified by rutin, quercetin, quercetin-3-O-β-galactoside, catechin, and gallic acid by BC and TLC methods. The antioxidant activity of the sum of polyphenolic compounds was studied in the model of lipid peroxidation (LPO) in rat liver mitochondria. It was found that polyphenols have a protective effect on mitochondria, a reduced damaging effect of Fe2+ / ascorbate and antioxidant activity depends on the concentration of the studied polyphenolic substances. The introduction of rutin into the incubation medium in 5 μM medium inhibits LPO processes by 32.0%, and at 10 μM – by 85.9% and in 20 μM – by 96.8%, compared with the control.

scholarly journals PRODUCTION OF NON-ROASTING PELLETS FROM THE WASTE OF SHABROVSKY TALCUM COMBINE

2019 ◽  
Vol 62 (3) ◽  
pp. 201-207
Author(s):  
V. S. Gulyakov ◽  
A. S. Vusikhis ◽  
S. A. Petrova
Keyword(s):  
Particle Size ◽  
Planetary Mill ◽  
Raw Material ◽  
Colloidal System ◽  
Scattering Method ◽  
Dynamic Light Scattering Method ◽  
Blast Furnace Production ◽  
Micron Size ◽  
Optimum Proportion ◽  
Technogenic Wastes

Technogenic wastes are by-products of any production. At the same time, they can be a raw material for obtaining useful products. In particular, the waste from the Shabrovsky talcum combine, can be used to produce magnesian fluxes. They are dispersed, so must be agglomerated. Therefore, a method has been proposed for the preparation of non-roasting pellets. As a binder, a mixture of water and peat, treated in a hydropercussion cavitation device, was used. The resulting material is a colloidal system with particle size of less than 10–4 m. To measure the particle size, dynamic light scattering method was used. For comparison, a similar mixture of water and peat treated in a planetary mill was studied. An analysis of the data obtained has shown that particles of micron size occupy up to 90 % of volume in the sample after treatment of the mixture in hydropercussion cavitation device. In a sample that was ground in a planetary mill, most of the particles are characterized by tens or even hundreds of microns. Determination of crushing strength of non-roasting pellets is performed by compressing in a tensile machine of model P-0.5. For this purpose, the granules were used both immediately after granulation and after drying at 105 °C to a moisture content of less than 1.5 %. With an optimum proportion of binders of 15 – 20 %, the strength of raw pellets was 15 N, and the strength of dry pellets was 90 N. With a binder percentage of less than 15 %, both raw and dried pellets had low strength. With a binder content of more than 20 %, the mixture had excessive plasticity and tackiness, which led to the formation of conglomerates of several granules. Despite the fact that the strength parameters of the non-roasting pellet are lower than those of pellets used in blast-furnace production, they are sufficient for use in steelmaking processes.

scholarly journals Issues in the Classification and Typology of Antique Masonry in the Writings of Foreign and Russian Scholars

2020 ◽  
pp. 1-14
Author(s):  
Andrei Grigorev
Keyword(s):  
Black Sea ◽  
Scientific Community ◽  
Raw Material ◽  
Historical Period ◽  
Military Architecture ◽  
Time And Space ◽  
Factors Affecting ◽  
Comprehensive Examination ◽  
Stone Carving ◽  
Scholarly Attention

The article examines the problems in developing approaches for the description and stylistic interpretation of antique masonry, as well as the issues in their stylistic dating. The task of dating construction remains belonging to the 7th century B.C.E. to the turn of the era, has attracted the scholarly attention of the scientific community since the 1940s and has been considered by both foreign and Russian researchers. The article's research object is the construction remains of Greek civil and military architecture in the Mediterranean and the Northern Black Sea regions - territories considered to have been the center and periphery of the Greek Oikumena. The study applied the comparative-typological method, the synchronization of objects in time and space, and dating by analogy. Both in Russian and foreign studies a significant amount of data has been collected for the analysis and construction of appropriate conclusions regarding the distribution and popularity of certain masonry in particular periods of time. However, due to the presence of many factors affecting the ancient construction and stone-carving craft, a number of exceptions due to local natural, economic, raw material, and administrative factors can be distinguished in the observed patterns. Thus, the whole picture of the formation of the construction and stone-carving craft (with the allocation of the corresponding types of masonry in a certain historical period) can be reconstructed only with a comprehensive examination of all of them. As the most interesting objects in this regard, the article cites a number of architectural remains belonging to the monuments of the distant chora of Tauric Chersonesos dating to the second half of the 4th century B.C.E.

scholarly journals CONCEPTIONS OF LAND RECLAMATION IN THE POLISH OPENCAST MINING

1997 ◽  
Vol 1 ◽  
pp. 26
Author(s):  
Tadeusz Chrzan ◽  
Henryk Greinert
Keyword(s):  
Coal Mining ◽  
Brown Coal ◽  
Agricultural Land ◽  
Land Reclamation ◽  
Surface Mining ◽  
Cultivated Plants ◽  
Opencast Mining ◽  
Direct Introduction ◽  
Mining Areas ◽  
Humus Soil

In the paper the influence of surface mining on the environment is presented. The sizes of mining areas and depression funnels has been shown. Also are presented the amount of cover materials and the quantity of water pumped out from the mines in five regions of brown coal mining in Poland.Various conceptions of land reclamation are discussed, from the method of pioneer vegetation in the years of 1950 - 1970, trough selective excavation of the humus soil in the years 1970 - 1980, to conception of the direct introduction of the final type of vegetation.In the lost part of the paper three models of agricultural land remediation are discussed, as well as the yields of the cultivated plants on recultivated former mining areas.

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