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Mari El is one of the most ecologically clean areas of Russia. The local woods are famous throughout Russia and is the largest forest on the Volga river, which contain large amounts of wood and at the same time, every year increasing its use for recreation. Therefore, recreational use should pay a lot of attention. This paper examines the state of objects in the mass use of forest resources for recreational purposes on the territory of the coastal zone of suburban lakes. Conducted socio-environmental assessment at...

Environmental monitoring systems in the cities existing in modern cities allow to control the state of natural (technogenic-natural) systems according to their programs. But it is not possible to receive an information for some special locations despite their significance ? this is a case of the RUDN-University campus. For these purposes an initiative group organized a special monitoring project for the campus. One part of these monitoring program is a control of the soil air quality. This is a one of the most rep...

In the Russian Federation, in the protection of the natural and archaeological heritage, work on the creation of the Red Book of Soils of Russia and the Red Book of Soils of the Subjects of the Russian Federation have been conducted. To date, the publication of Red Books of Soils has been completed in about 10% of the subjects of the Russian Federation. Groups of Soil Scientists discovered and studied the soils for regional Red Soil books in Volgograd (Kretinin, et al., 2006), Leningrad (Aparin et al., 2007), Belg...

Among the energy sources alternative to fossil fuels, renewable energy sources such as solar garner the public?s attention, as they are available and have fewer adverse effects on the environment than do fossil fuels. Solar heating systems are a type of renewable energy technology that has been increasingly used in the past decade across Europe to provide heating, air-conditioning, and domestic hot water (DHW) for buildings. This paper provides a briefly review of the available heating technologies assisted by sol...

Starting from the seventies of the last century, action programs have been the basis for European environmental policy. They are not binding for member states, but determine the directions of policy development in this area. The seventh program includes a vision for 2050 and main purposes are: a good quality of citizen?s life, nothing wasted in the economy, restored biodiversity and low-emission growth. The changes taking place in the last thirty years in Poland resulting from the systemic transformation, the inte...

Asphaltenes are one of the very important components of heavy oil. They define the viscosity of oil and provide significant problems in production, transportation and refinery of heavy crude oil. Investigation of their agglomerations under various influence parameters is necessary for optimization of production technology. The experimental results of frequency and concentration attenuation dependency of ultrasound waves in asphaltene suspensions are discussed. A toluene and binary mixture (toluene:n-heptane) with ...

Environmental risks in waterstreams are not inconsiderable factor affecting the ecosystem and humans as part of the whole. As part of a comprehensive EU wide efforts to protect water bodies in Slovakia was adaptation of Directive 2000/60/EC which is establishing a framework for Community action in the field of water policy and water management. The core of the paper is an analysis of potential environmental risks in river basin Horn?d due to flooding. The aim is to identify possible sources of contamination, which...

The aim of this article is to identify and assess the sources of risk in the mining production planning process in terms of quantity and value in a hard coal mine. To implement this goal, the first part of this paper identifies sources of risk, the second part in turn describes preventative actions that the mine should undertake to minimize the risk during the mining production planning. The article makes use of deduction, mining production processes analysis and literature on mining economics. The internal source...

The use of electricity in potentially explosive atmospheres has many features for which the issues concerning the design of electrical equipment and installations raise many difficulties. One of the significant difficulties is the implementation of conditions fort ensuring explosion protection even under the conditions of failure scenarios. For low current electrical equipment (interlocking, command, data communications, signalling) the assessment of explosion protection is often carried out by calculation using t...

Rural areas are antipodes to urbanized and industrialized territories. At the same time, rural areas are obligatory components of the sustainable environment and economic development of countries and regions. The rural area mostly depends on environmental factors. Ameliorative factors, i.e. the suitability for improving the performance characteristics of the area, have the leading role as well. These factors effect on the development of agricultural production functions (specialization) and on the rural areas soci...

The pore space is an important part of a rock that affects its mechanical and petrophysical properties. Among numerous methods for pore space characterization X-ray computed microtomography (?CT) is one that provides information on the spatial distribution of pores within rocks. Followed by image processing and analysis, detailed information on orientation and shape of voids can be obtained. Hence, it is a good method for microstructural studies on the porous space. The aim of this paper is to present spatial vari...

X-ray microtomography (?CT) has been increasingly popular among geoscientists interested in reservoir rocks? pore space, as it enables studying much more parameters than solely the porosity. Because carbonate rocks can be dramatically complex with respect to their permeability, porosity, and mineral composition ? they need advanced tools like ?CT to be studied in details. Petrographically and petrophysically variable carbonate sample withdrawn from the Bro?sko Reef, West Poland was examined by means of the ?CT-bas...

The difference between an environmental project management and construction project management is in the difference between usual business operations and need of the environment sustainability. In civil engineering we need accept business operations as the core of the project management with focus on sustainable development. This article deals with the specifics in project management concept, which includes environmental components in the project structuring and providing. Nominated project manager or chief engine...

Uranium-238 is a parent radionuclide for several radioactive stable chemical elements, which presence in the therapeutic mud can cause negative consequences for patients. This paper presents the results of the study of the U-238 specific activity in the mud sediment cores of Pelenkino Lake and Bolshoi Tambukan Lake situated in two different geological and hydrological regions in the south of European Russia. The relationship between the U-238 specific activity in the mud, its pH, Eh values and the organic matter c...

The solving of the project of the Ministry of Agriculture of the Czech Republic dedicated to sustainable agricultural management in the North Western Bohemia is under way from 2015 to 2018. The main attention of the 2017 and 2018 research is devoted to the research of experimental areas retained to the natural succession. The second research problem was the development of the geological parks as a part of the restoration activities. The last part of the paper is the brief information about first step of historical...

We deal with the target of our work that is to provide a general overview of the Slovak scene relating to the Startups. Our aim is to analyze the area of innovative entrepreneurship and start-ups in individual sectors of the Slovak economy (mining industry, renewable energy sources, tourism, etc.). It is necessary to state the reasons that lead to the development of startups and to analyze their impact on the economy of the national economy in terms of creating new jobs. We have explored successful and less succes...

Manganese occurrences (eg. dendrite and/or surface coating) are highly usual products of many geologic environments. Morphology, spectroscopic and chemical properties of the manganese occurrences may vary depending on mode of environments. This study is concern with manganese occurrences along the minor cracks of Miocene ignimbrite unit, which has a wide range of exposure in the Afyonkarahisar region of the inner western part of Anatolia. The host rock has light gray, yellowish white in color and characterized by ...

Underground mines from Jiu Valley have as objective the extraction of hard coal, used for energetic purposes. Exploitation activities are associated with the extraction of significant amounts of sterile, derived from opening and preparing works, but also from coal processing activity. The sterile rocks are stored in waste dumps of different sizes, which must undergo periodic stability analysis. This paper aims to estimate waste dumps stability, by using fuzzy theory, the results of such an analysis being of qualit...

Nizhne-Karmalskoye super-viscous oil deposit is located within the western slope of the South Tatar arch of the Volga-Urals anteclise. In the structural plan, the deposit is a sedimentary accumulative uplift-bar of 13 km in length, 3-5 km in width and 35-50 m in height. The uplift-bar was formed at the end of the Ufa age. According to one of the hypotheses, the sand body has a delta-baric origin. The body is composed of well-sorted fine-grained graywacke sandstones, which are now reservoir rocks of the super-visco...

Recent studies emphasized rather skeptical views shared by the Romanian stakeholders with regard to the public recognition of the central role of soil resources for assuring food security as well as the fundamental role that soils play in climate change adaptation. As stakeholder views are particularly important for understanding their values and needs, the paper aims to explore the perceptions with regard to soil quality, soil threats as well as the existence and effectives of the national and European policies o...

For a long time, various researches have been realized about the presence and distribution of Ag, Au, Pb, Zn and their distributions research in different horizons, but there are few researches that are available with statistical analysis related to their distribution which gives a better information about their distribution. Research on the method of distribution by statistical methods are quite accurate methods and give us a clear presentation of the way these elements are distributed in the Trepca Mining. There...

The research and development activity is becoming increasingly important in the current economic context. The emergences of new products, increasing the share of a saturated market or even entering a new market are now based on a research and development activity. The amounts allocated for this activity must be in line with the objectives set by manufacturers in the building materials industry in Europe. For them it is very important to increase their turnover, but they also seek to increase their notoriety, in ad...

Since 2017, the Russian government has begun to pay more attention to digital technologies in agriculture. The Ministry of Agriculture of the Russian Federation proposed the creation of a state subprogram "Digital Agriculture", in addition, an analytical center was created within the Ministry to monitor the state of agricultural land. Intensive introduction of information technologies in agriculture, promises productivity growth, investment attractiveness of the industry, improving the quality of products with a s...

The present study seeks to relate the focal mechanisms of moderate earthquakes, regional tectonics and the tectonic stress distribution, in Albania. We have analyzed 33 moderate earthquakes (2.2 ? MW ? 4.9) recorded in the time period 2013-2015, by the Albanian broadband (BB) seismic network. Events were located within the upper crust, in the depth range 0 ? h ? 17 km, showing the present day active tectonics. Formal stress inversion of the focal mechanism data, support the variation in the direction of the actual...

The North Dobrogean Orogen is located between the Sf Gheorghe fault to the north and Peceneaga -Camena to the south. Structurally, it involves four tectonic units with NW-SE direction: M?cin unit, Niculi?el unit, Consul unit and Tulcea unit. The M?cin unit comprise a large variety of rocks assemblage, including sedimentary rocks, metamorphic rocks and igneous rocks. All this rocks assemblage belongs to several subunits developed on quasi-parallel NW-SE direction. M?cin unit has been interpreted as nappe folded ove...

The purpose of the article is to assess the regional structure of the upper Triassic - lower Cretaceous sediments (Mulussa F and Rutbah reservoirs), which serve as an important targets for hydrocarbons production and exploration to the center and Middle East of Syria. The upper Triassic - lower Cretaceous sediments are approximately of 800 m thickness consist mainly of floodplain clays interbedded with medium to fine grained fluvial sandstones. In addition, there are dolomites and clay dolomites present in the low...

The paper deals with the implementation of modern techniques and methods of surveillance in closed mining sites, for monitoring, assessing the real state and forecasting possible changes to provide an integrated picture of the state of the natural environment. The proposed system is designed as a tool with practical applicability in the decision making process of ecological restoration strategies of closed mining sites. Closed / abandoned mines have an acute need to deploy a sensor network due to their lack of wor...

Metal-based catalysts have shown promising applications and effects in different thermal enhanced oil recovery (THEOR) to improve oil recovery from oil reservoirs. Also, catalysts were chosen due to their exclusive properties, such as high surface area to volume ratio, high degree of dispersion in porous media and high catalytic activity. This study is aimed at developing a catalytic-enhanced oil recovery for heavy crude oil using in-situ combustion method in the presence of catalyst. In order to that, we synthesi...

The monitoring data of groundwater quality in a vast area in north central Bulgaria indicates concentration of hexavalent chromium above the maximum contaminant level set in Directive 98/83/EO. Hexavalent chromium contamination of the groundwater is of a great concern, since this groundwater is the main drinking water source for more than 25 small villages in the region. Field tests were conducted in order to determine the mineral and chemical composition of soils and rocks near four of the villages. Exploratory d...

In industrial plants many types of combustible dusts are generated, processed, handled and stored. When ignited, they can burn rapidly and with a considerable explosion force, when mixed with air in proper proportions. This is the reason why adequate precautions have to be adopted, to ensure that all equipment and protective systems are appropriately protected so that the security level from these installations to be high. The establishment and implementation of protection measures is primarily aimed at preventing...

In special applications it is necessary to correlate the obtained data about the state of a process in which the Joule effect is involved by passing an electric current through a conductive material. The multiplier effect due to increased resistance with temperature may require particular attention in monitoring the process, thus requiring automatic decision-making processes so that the modification of the conductive material properties does not affect the entire chain of the process. We propose a system for monit...

This paper presents the geochemical forms of arsenic that are present in bottom sediments of rivers and surface waters under various oxidative conditions. In summer, in the rivers with the high anthropogenic load the redox potential of bottom sediments varies from 78 mV to 255 mV (at a temperature of 16-20?C), which corresponds to oxidative and mixed oxidative-reductive conditions. It is shown that under these conditions arsenic is present in the form of insoluble arsenous acid, partially ionized arsenic acid and ...

The need to provide the highest level of protection in the industrial spaces with explosion danger led, on the one hand, to the development of new types of dissipative textile materials with protective role against static electricity and, on the other hand, to the development of test methods of these materials for the purpose of assessing compliance with the requirements specific to prevent the initiation of explosive atmospheres. The assessment of the compliance of the dissipative textile materials used at the ma...

In order to reduce the negative impact of PVC on the environment, it is becoming popular to produce composite materials based on PVC filled with various natural fillers. For example, bentonite as filler in a polymer matrix can absorb volatile toxic components and accelerate the degradation of PVC. Also in this paper, natural polysaccharides pectin and starch are considered as fillers. Pectin and starch are also capable of accelerating biodegradation of PVC. Nevertheless, the thermal stability of the resulting poly...

The impact of the extreme atmospheric conditions in the context of climate changes is a topic often studied at a global scale. The aim of the presented work is to analysis the extreme wind condition at a much smaller scale represented by the Black Sea area. For this perspective, the presented paper presents a comprehensive picture of the extreme atmospheric conditions along the coastlines of Romania, Bulgaria, Turkey, Georgia, Russia and Ukraine. More precisely, eight geographical locations were analyzed, together...

One of the main mechanisms that determine the deterioration of salt stability is the occurring of fractures as a result of the influence of mining pressure. Aspects of rock salt cracking can be observed both in situ and laboratory tests on rock samples collected from the mining works. Cracking parameters are determined for different conditions: age pillars, excavation technology, how has the bearing size, depth of mining and other random aspects. Geomechanical assessment of underground workings made in rock salt m...

Derived from the results of experimental modeling of physicochemical processes of solvent extraction of extra-viscous oil (EVO) from the reservoir model, the composition, which provides a 96% extraction of the oil from Ashal?chinskoe deposit, has been chosen. The composition represents the mixture of large-capacity petrochemical products. It includes the fraction of light aliphatic hydrocarbons, ethylbenzene distillation residue, and the mixture of aromatic hydrocarbons at a 0.50:0.25:0.25 ratio. The latter inhibi...

Open cast coal mining is inevitably accompanied by a significant technological interference in the environment. This requires the due (during the technological process) restoration of the disrupted balance and the forming of a new environment consistent with the ecological requirements. Environment protection is one of the priority tasks for Mini Maritsa Iztok EAD. The environment protection legislation in force is strictly observed at the Company. The use of water to support mining operations, and waste water rep...

The overall objectives for business sustainability have become increasingly more important for companies, and for stakeholders of the company. Socially responsible companies must be involved in creating and developing sustainable businesses, which gives them competitive advantages and added value. The theoretical frame of the paper is based on the model of value chain. Each element of the chain explores the Corporate Social Responsibility issues, adopted/designed by each functional department of the companies, ori...

In the framework of this study, the main prerequisites, conditions and stages of the modern concept of sustainable development are considered. The content of this concept is revealed, general principles, criteria and indicators of sustainable development are determined, the features of the development of the ?green? economy in the conditions of digitalization of the world economic system are considered. Taking into account these features, a model of the regional concept have been developed describing sustainable d...

The European Commission is investing in EU industry for a modern, clean and fair economy. Innovation is a key factor in the competitiveness of European industry. Following the European experience, the aim of the article is to identify sustainable innovative directions for the development of the oil and gas sector in the context of global trends. The article shows that the period from 2014 to the present time is characterized by the fact that in a situation of a drastic decline in oil prices, the world oil and gas ...

In the context of the increasing concern on controlling carbon emissions, global warming and in order to reduce energy consumption, buildings design must take into account the criteria of energy efficiency and the use of local renewable resources imposed by EU requirements for 2020. Thermal insulating materials based on natural fibers as building materials are increasingly being studied for their low environmental impact and availability. The present paper reviews the state of the art of research on the influence ...

Formation of gas hydrates is a problem in the petroleum industry where the gas hydrates are responsible for the blockage of flow lines, valves and well heads, thereby causing great loss of production and other severe safety hazards to the oil and gas industry. This topic is the most challenging subject in flow assurance problems in oil and gas industry. Kinetic hydrate inhibitors (KHIs) are water-soluble polymers that are used to prevent gas hydrate blockages and they have been used in the field successfully. In t...

Surfactant flooding is a significant method used in enhanced oil recovery to reduce the amount of oil in pore space of matrix rock. These materials are injected to mobilize heavy oil by lowering the interfacial tension between oil and water and/or by the wettability alteration from oil-wet to water-wet. A various of cationic, anionic, non-ionic, and amphoteric surfactants have been studied. Although surfactant/polymer flooding is one of the most promising methods available to recover residual and remaining oil, it...

Metal oxide pillared interlayered clays (PILCs) possesses several attractive properties, such as constant high porosity with presence of both micropores and mesopores, thermal stability (up to 450В°C), surface acidity and catalytic active components - metal oxide pillars. Thanks to these specific characteristics of PILCs they can be used either as catalyst or as catalyst support in a wide range of catalytic applications, including catalytic cracking processes. In this work Fe-pillared interlayered clays (Fe-PILCs)...

At present, more 900 million tons and 630 million tons of crushed tailings of copper ores are accumulated in tailings storages of Jeskasgan and Balkhash ore-processing plants, respectively. Micromineralogical studies of tails in cemented polished sections are showed the following copper minerals: chalcopyrite is the most common among them and the amount of its grains in cemented sections varies from 30 to 50 %; covellite - from 5 to 20 %; chalcocite - from rare grains to 20 %; bornite - from 4 to 25 %. Other miner...

Technological and material analysis of construction works helps to achieve the intended goals set for a given undertaking taking into investment not only time and cost factors. It is worth considering the choice of a design solution in terms of material and work technology. The authors exchanged the benefits of the analysis of the technological and material performance of construction works for both the investor and the contractor. They presented the evaluation method using the selection of appropriate criteria. A...

For the development of the aviation industry companies more and more important becomes the issue of sustainable development. It was found that the technology creativity can play an important role in minimizing the negative impact of aviation companies on the environment, for example by initiating and realization of innovative projects related to environmental protection. Technology creativity gives rise to a new perspective on the development of contemporary enterprises, in particular for high-tech enterprises tha...

Technology entrepreneurship should be understood as a strategic mechanism of the organization?s development, while the core of this development is the use of modern technologies and social processes constitute an indispensable frame. In other words, an organization, as an entity of technology entrepreneurship strategy, is a catalyst for technology ventures, ranging from a technological idea to the market product. A model of technology entrepreneurship as a long-term mechanism for development of an organization is ...

Pongamia Pinnata oil has been considered as one of potential sources for commercial production of biodiesel in Pakistan. Undiluted Pongamia biodiesel has been tested in direct injection diesel engine at rated speed over the range of load. Test results have been compared with those of regular diesel fuel. With neat biodiesel brake fuel conversion efficiency has been slightly decreased and brake specific fuel consumption increased. Emissions of carbon monoxide and unburned hydrocarbons have been essentially unchange...