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Fields that are in the late stages of development have low potential and opportunities to solve the accumulated technical and environmental problems due to insufficient profitability of their operation, lack of sources of financing. This fully applies to the fields of the Orenburg region, among the main problems of which should be noted: the growth of the share of hard-to-recover hydrocarbon reserves in low-permeable reservoirs, the share of high-viscosity oil; the low level of utilization of associated petroleum ...

Nanofibers have attracted a lot of attention for applying in the third and fourth generation of solar cells to enhance their performance. In this paper, we investigate the possibility of obtaining and using successfully high-quality nanofibers based on perovskite: polymer composites (PPCs) in perovskite solar cells. First, the advantages, challenges and development directions of employing nanofibers as active layers (ALs) in organic solar cells (OSCs) have been reported to establish the principles needed to prepar...

The purpose of the analysis is to study the conceptual models and mechanisms of the state?s oil policy in some OPEC countries and Russia. Despite the fact, that today the world is pursuing a course to reduce the energy intensity of the economy and protect the environment, economic welfare largely continues to depend on oil consumption, and the oil industry has a global nature of its functioning. This requires taking into account the mechanism of the state?s influence both on the external and internal segments of t...

The decision making theory finds its application literally at any field of science, especially at geosciences, because working with natural resources requires the most accurate tools. This paper considers one question of the given theory, which is called the solution priority problem. The priority problem in multi-object optimization is quite complex, many authors understand it in their own way. Perhaps this is because now the theory of multi-purpose optimization is in its infancy: there is no holistic understandi...

Worldwide, political framework reaffirmed sustainable development as a central element of the international agenda and give a new impetus to the practical application of the global measures to combat the negative effects of human actions and for the environmental protection. Since mid 2010, petrol consumption in the transport sector has increased at a higher rate than in other sectors. The transport sector generates 35% of the total CO2 emissions. In this context, strategies have been adopted to use clean energy, ...

The article examines the paleogeographic conditions of rock formation of the Alakol depression from the Baikol era of the end of the Proterozoic in order to determine the most favorable deposits for oil and gas source properties, where to the north and south of the Alakol depression there were marine sedimentation conditions with the accumulation of deposits up to 1000m. it was found that in the Early Cambrian time, a contract relief developed east of the depression. In the Ordovician, sediments accumulate under m...

The idea of the Hercynian Paleozoic age of the Turanian platform foundation is widespread among geologists, giving way to an opinion of its having no prospects for oil and gas. New seismic and geological data obtained in the south of the Turanian platform, within the South Mangyshlak downfold system in Kazakhstan and the Asseke-audan trough in Uzbekistan, support the authors? idea on a new Paleozoic floor promising oil and gas in this area. Results of the analysis and comparison of the well sections prove the regi...

The authors have conducted an experiment that involved modeling of interactions between immune regulation mechanisms applying a viral load simulator in vitro. The experiment was performed on a suspension that contained immune cells extracted from peripheral blood samples (68 samples overall). There were several influencing factors such as impacts exerted by managing elements including cytokines (IL-1), hydrocortisone, and exogenous environmental factors represented by aluminum compounds (aluminum oxide) as well as...

Upper Paleozoic carbonate-terrigenous deposits are widespread in the southwestern part of South Kazakhstan: in the Syr Darya, Aral, Chu-Sarysu and South Torgai sedimentary basins Karatau mountains, the Ugam ridge, as well as in the adjacent territories of Uzbekistan. Their capacity reaches 4000 m. At the end of the Middle Devonian, the western edge of the Kazakhstan continent sank, which led to transgression of the sea and the formation of a basin of forward deflection. On the outskirts of the latter, carbonate pl...

The dike rocks under study are localized in Mesozoic (T3-J2) clastic rocks in the western part of Verkhoyansk-Kolyma fold area. Studying the nature of the dikes and geodynamic setting of their formation is of great interest now in view of the controversy surrounding their assignment to definite magmatic complexes of the Verkhoyansk-Kolyma fold area and the uncertain origin of mineralization in the Yana-Kolyma gold belt. Major elements were determined using the silicate analysis of magmatic rocks. The mineral compo...

In the portuguese section of the Central Iberian Zone, the Guimaraes region hosts a wide diversity of plutonic variscan lithologies including biotite-rich granitoids and vaugnerites. Vaugnerite outcrops occur as small bodies, typically enclosed by the main regional granite (the coarse-grained, biotite-rich, porphyritic Guimaraes and Santo Tirso monzogranite). Mafic enclaves of vaugnerites can also be identified in the host granite. The granitoids are peraluminous (ASI = 1.10 ? 1.15), having crystallized from melts...

The lack of field studies outcome on ancient wineries and land plots under vineyards in the Kerch Peninsula puts on agenda a higher demand for new data, which is essential for understanding viticulture development of the European Bosporus throughout 4th c. BC ? 3rd ?. AD. The geoarchaeological approach, with the involvement of the natural sciences resources (pedology, geochemistry, palaeobotany), was used to study the soil within the archaeological complex (10 km west of Pantikapaion (modern Kerch)) dated 4th ? 3r...

The research topic is about to planning geopark in Racha-Lechkhumi Kvemo Svanei region, specifically in Racha region In Georgia, Caucasus. There is no one category of protected areas in Racha region. Geopark is a new category of protected areas which will be a novelty in Georgia and the whole of the Caucasus. In the case of planning the geopark, in the region would develop geotourism. In today's developed countries, Geotourism and geoparks as novel strategies for socio?economic development in rural areas. Geopark ...

The trend of improving the properties of the used materials also extends to the field of road construction. The research focuses on materials and technologies that immediately improve several properties of asphalt mixtures and at the same time reduce the energy requirements during the production, laying and compaction of asphalt mixtures. When comparing the energy consumption consumed in the production of one t of a mixture (HMA, WMA), it is possible to save at least 15 % of costs and CO2eq emissions [kg/t] up to ...

The ability of a moving charge to create a vortex magnetic field around itself is well known. This phenomenon formed the basis for the creation of electromagnets. The reverse process is electromagnetic induction, when a magnet moving with acceleration becomes a source of electric current in a closed conducting circuit. In this regard, ferromagnetic fluids are of some interest. Ferromagnetic fluid is an aggregatively stable colloidal system consisting of nanosized particles of a dispersed phase uniformly distribute...

In recent years, the world has been plagued by a large number of emergencies that have an impact not only on the population, but also on health, property and the environment. One of the basic tasks performed by the public administration is to ensure the safety and protection of the population through various tools. One of the tools is, for example, safety planning. With the help of safety plans, it is possible to achieve the application of appropriate measures that help deal with emergencies or crisis situations a...

The goals of this study were to quantify the relationship between population density and climatic variables over Russia. A paired GIS-analysis of the population density layer (a dependent variable) on climatic layers of warmth and water resources and climate severity (independent variables) resulted in a multiple linear bioclimatic model of the population density in Russia. The model explained 38% of the population density variation by climate. We applied our population model to the extreme climate change scenario...

The power and energy parameters of paddle drills used for drilling geotechnological wells in the extraction of uranium raw materials are considered. The distributions of the axial load, rotational force, and power for all rock-cutting elements of drills are obtained. A comparison of the cost of power for the destruction of the bottom of the well using a well-known and patented picobur equipped with a ring pilot showed that picobur of a new design during drilling reduces energy consumption by 14-17% due to a more r...

Dust emissions from industrial enterprises are often treated as total suspended particles (TSP); and they also quite often contain a wide range of chemical components. Among these components rather hazardous admixtures can be found, such as heavy metals, benzpyrene, polycyclic aromatic hydrocarbons, etc. Structure of emissions in terms of admixtures contained in them is determined by raw materials applied at a specific production, production technologies, structure of an end product, etc. Being suspended, chemical...

Current problems of Russian subsurface users (volatility of the global energy market, ambiguity in the behavior of traditional consumers, an increase in the share of alternative energy sources in the global fuel and energy balance, low level of technological efficiency of fixed assets, insufficient processing depth, high losses of hydrocarbons, lack of technologies for recycling resources, methane emissions, etc.) reduce the environmental and economic efficiency of production, which, in turn, this leads to a deter...

Georgia belongs to the number of small, open economies. The problems in its economy are therefore similar to those of developing countries. Our country's economic growth largely depends on the scale of attracting foreign direct investments. The foreign trade suffers permanent shortages; local agriculture is underdeveloped; mechanization and melioration and Chemicals supply level is low; Moreover, the agricultural sector suffers from a lack of funds. Despite the fact the product produced in this sector is natural, ...

The Brown Coal Research Institute j. s. c. is realising the long term research and survey of the mining area of the Most Basin. One of new important tasks is problem of climatic changes. The Most Coal Basin area is known for its largest Czech brown coal deposit. It is situated in the region of North Western Bohemia - Czech mining region. The main mining companies are the North Bohemian Mines, j.s.c. and the Seven Group j.s.c. The main mining localities are the Bilina open pit mine, the Libous open pit mine, the Vr...

In the present article, based on the analysis and identification of the problems related to the socio-economic development of the border municipalities between the Republic of Bulgaria and the Republic of Serbia, an attempt is made to identify the main problems in forming policies to improve cross-border cooperation and achieving a balanced socio-economic development that will slow down the rate of population decline in the municipalities in question. The role of the local self-government bodies and the opportunit...

Legislative changes within the circular economy package, initiated by the European Union and in the process of incorporation into the legislation of the Czech Republic, lead to a ban on landfill after 2024. More precisely, these changes lead to a significant reduction of landfill, with tons of landfilled waste. The aim of the changes is to reduce the landfilling of municipal waste to a maximum of 10% in 2035, to prohibit landfilling of recoverable waste (mixed municipal waste) and to increase the recycling of muni...

The purpose of the article is to analyze the prospects of ?Green Growth? in cooperation with the oil sector of the economy of the countries, stated above. The creation of mechanisms for meeting the challenges of structural adjustment of the industrial economy under environmental threats of a planetary and regional nature could not but affect the countries - the largest producers and exporters of oil, such as key participants in the world oil market, Saudi Arabia (together with other Arabian monarchies - members of...

During the oil field development process some of productive formation areas remain undrained which brings to decrease of total recovery factor. Conventional methods of reservoir development control including well testing, tracer studies as well as reservoir simulation have significant limitations when analyzing the inter-well space. To localize oil saturated undrained areas in the inter-well space, it is necessary to develop new approaches, and one of them may be the geochemical survey based on analysis of gas com...

This paper is focused on the simulation using Matlab/Simulink software? of the Photovoltaic (PV) module for a better understanding of the power generated under different atmospheric conditions. One diode model and double diode model of a PV cell are also shown in this paper. The simulations could be performed considering both models, but here only the PV characteristics for one diode model will be shown. Thus, the PV characteristics will be shown for series connection, for parallel connection, for series connectio...

The concept of greywater reuse has been gaining importance recently. These systems are also becoming a must in Europe, where there has not been such a pressure exercised on greywater (shower and bath water) reuse to date. The situation is dynamically changing, some countries in southern Europe start facing a lack of drinking water and new water resources must be searched for. Recycling some of the water is also encouraged by the fact that these systems are cheaper that sea water treatment. The main reason for grey...

The resource base of Ukraine has 60 deposits of iron ore with proven reserves. The quality assessment of these objects was carried out during their exploration several decades ago. Commodity products of domestic mining enterprises are various types of iron ore, concentrate, pellets, agglomerate. Mostly commodity concentrates have a total iron content of 64-65%. The best indicators (more than 67% of Fe total) are characteristic of certain types of concentrates of Central and Ingulets enterprises. The quality of com...

This paper analyses the vibrations and noises transmitted to the seafaring staff on a cargo river ship on the Danube between Novi Sad and Sulina. The ship has 5 people as sailing personnel: 1 captain, 1 coxswain, 1 mechanic, 2 sailors. The trip was made in the fall of 2018. Parallel measurements were made on the main bridge as well as inside the engines room, in three situations: ship leaving the shore, running and mooring maneuver. We measured and calculated the main vibration parameters: Vibration magnitude r.m....

The largest iron ore basin in Europe, located in the city of Kryvyi Rih and in which since 1876 and to this day continues the active development of the mining industry causes the rapid emergence of anthropogenic landscapes. And thus the question arises as to what scale technogenesis has covered, what the largest landscape systems have emerged as a result of the mining industry, and what optimization methods are being carried out to maintain the area to prevent man-made hazards. In our work we have analyzed the qua...

One of the promising areas of rare-metal mineralisation containing rare-earth elements is the Karakamys ore district located in the west Balkhash region, within the limits of the Chu-Ili ore belt. The area is under-researched in regard to rare-earth mineralisation. Within the ore district, there are three dozen known rare-metal objects with associated rare-earth mineralisation (Karakamys, Shakshagaily and others). The majority of objects are concentrated in east near-contact zone of the Kaib granitoid massif, in m...

Study presents the current state and assessment of prospective ways of college campuses development in the Russian Federation based on environmental reconstruction. There is identified the main complex of problematic aspects of sustainable architectural development of campus territories. The paper proposes a concept of integrated modernization of buildings and territories of Russian universities. The presented priority directions for the college campuses reconstruction is based on the green building system. The re...

The region of Kardzhali is earthquake prone to various local and near/trans border seismic impacts. That is why their combined analysis is of interest to be studied. The 3 most significant seismic events that struck this region in the last 15 years are considered and discussed. That is: the 2006, M=4.5 local one; the 2014, M=6.9 transborder and the 2019, M=3.6 local one. The real dynamic impact by these events transformed into the earthquake engineering characteristics they produced is evaluated. Data accumulated ...

In the past few decades it has been evident that various human activities can induce local seismic activity. One of the important factors of human induced seismicity is hydrocarbon fields? development [6], [12]. One of the regions with probable induced seismicity is Tatarstan Republic where a giant Romashkino oilfield has been produced for a several decades. The link between seismicity and hydrocarbon production for this area was previously studied [1]. In this study the attempt has been made to find possible refl...

Renewable resources? share in meeting the power balance in Romania grew constantly during the past decade. Therefore, the contribution of polluting energy sources (such as coal or oil) has progressively reduced. Moreover, to enable environmental impact mitigation for the still operating classical plants, proper desulphurization equipment were installed. It is remarked that the shares corresponding to hydro-energy and nuclear energy show an almost constant trend. Sensible investments were made in the energy sector,...

To date, the main oil and gas deposits in the Cambrian and Precambrian section of the south of the Siberian platform are confined to the terrigenous part of the Precambrian sedimentary cover, while in a much more powerful halogen-carbonate (HC) complex of the Vendian-Cambrian and the Lower Cambrian, the little commercial hydrocarbon accumulations were found. Therefore, the prospect of the largest reserve for increasing oil and gas deposits is associated with the carbonate complex. Along with the urgency of identif...

This paper presents the results of a study of the hydrolysis of microcrystalline cellulose in a subcritical water medium. The influence of temperature, time, cellulose/water ratio, cellulose particle size, and other parameters on the hydrolysis process was studied. The influence on the process of pretreatment of aqueous dispersions of cellulose with ultrasound was studied. It was shown that the optimal processing time is 30 min (~ 150 kJ). Over a given period of time, destruction and partial hydrolysis of the amor...

The aim of the paper is to propose guidelines for a general virtual reality based framework for training people how to behave and evacuate in business buildings during disastrous events. Disaster is a chain of dangerous events or exposure to hazardous conditions, which could lead to harmful damages to people with an eventual loss of life or property. Such risk conditions can be managed by planning well ahead before disasters occur and by performing suitable training to avoid critical disaster consequences. The pap...

Spontaneous combustion is a phenomenon that results from the heating of combustible organic powders by slow oxidation and which occurs through the air passage (created by an air depression) through the mass of dust. The oxidation phenomenon of combustible powders represents their reaction with atmospheric oxygen resulting in products of carbon dioxide, carbon oxide, water and other gases whose content depends on the temperature at which the oxidation takes place. During oxidation, the oxidation rate is a function ...

The work is devoted to historical retrospective on the main aspects of the modern concept of development of the world economic system. The relevance of research is due to the presence of environmental problems in the modern economy. The data on the impact of the concept of world development on environmental development are presented. The genesis of the development of the main scientific publications on the chosen research topic is presented. The role of such a non-governmental organization as the Club of Rome, whi...

Hospitals are an essential element of public infrastructure. Some aspects of civil infrastructure have become considered critical. Critical infrastructure means an element of critical infrastructure or a system of critical infrastructure (healthcare system), the disruption of the function of which would have a severe impact on state security, provision of basic living needs of the population, and the health of persons or state economy. To the critical infrastructure sector belongs transport, energy, agriculture, h...

The paper deals with the quantitative risk assessment approach to the use of the universal quantitative method RM/RA CRAMM. The method is applied to criminality cases related to arson and other cases of environmental insensitivity influenced by social background. The arson statistics recorded in Slovakia are usually hidden behind other reasons of the fire cause. The hypothesis is that there is a certain impact of the social environment on criminality, including arson behaviour. The quantitative method needs quanti...

Flammable liquids in motion when is transporting by pipes, is mixing, pumping, filtering, agitating or by pouring them from one vessel to another can generate static charges even if the respective pipes or vessels are bonded and earthed. Also, loads may occur if the liquid is splashes and forms a mist inside the vessel (tank, container). Accumulation of static electricity can, under certain conditions, be discharge and ignite the explosive atmosphere. In the paper are presented some aspects regarding the technical...

In order for Latvia to achieve the long-term strategic goal set in its policy documents ? to become the greenest country in the world ? it is essential to promote social entrepreneurship, as the social enterprises perform economic activities having positive social effects in relation to the protection and preservation of the environment. In 2019 in Latvia, 5% of the social enterprises were engaged in the field of environmental protection; therefore, the research aims to examine the role of social entrepreneurship ...

A large group of commercial minerals known as ?industrial minerals? is used worldwide. Industrial minerals are understood as useful mineral deposits, i.e. all minerals extracted from the earth, except for energy raw materials, metals, water and gemstones, and used for industrial purposes owing to their physical, chemical and mechanical properties. The geological structure of the continental eastern Fennoscandian Shield (Karelian Region), the basement of the East European Platform, is controlled by its long geologi...

The paper presents well-preserved microfaunas (foraminifers and ostracods) enclosed in cuttings samples and cores recovered by 6 hydrocarbon wells drilled in the Moesian Platform, in Silistea area, S Romania. The lithological and micropaleontological obtained data improve the stratigraphic knowledge at regional level. The analyzed samples contain foraminifera that characterize biozones extending in the Sarmatian, as follows: the middle Volhynian Varidentella reussi, the late Volhynian Elphidium reginum, the early ...

The work dwells on finding solutions to a task related to substantiating locations where instrumental measurements should be performed within a program for monitoring over exposure to electromagnetic radiation (EMR) in radio-frequency range in a large industrial city with its area exceeding 800 km2 and population being more than 1 million. A database has been created (and bound to a vector map of the city) containing data on 2 011 sources of EMR in radio-frequency range. They were 1 666 basic mobile communication ...

The investigation of the ambient seismic noise recorded by the Bulgarian Antarctic seismic station LIVV over four polar summers from 2015 to 2020 is presented in the paper. The method for evaluating the Power Spectral Density and Probability Density Functions is applied to study the distribution of the seismic noise in a period interval from 0.02 s to 30 s. The method is widely applied in seismological practice of the Seismological Society for carrying out both fundamental and practical scientific projects. For a ...

The coastal retreat in touristic areas concerns many sectors along the Romanian Black Sea shore; it usually requires programmes for beach nourishment, and consequently, large amounts of proper sand are necessary to be available for such activities. In order to minimize the effort for searching offshore sand, we conducted seismo-acoustics researches and some other archived data have been used during these researches, both for planning the sea works and during the integrated interpretation of the data. The results o...