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Mining, due to its intensive economic operation, is primarily associated with negative impact on natural environment and destruction of natural assets, and that regardless of the method of raw materials extraction. So, the great challenge now is to restore natural balance to areas affected by the consequences of this operation. Literature on the subject features a lot of publications on recultivation, understood as reintroduction of forests, meadows, arable land and water courses into degraded former mining areas ...

Heavy crude oils are extracted mostly by thermal recovery methods which reduce viscosity of heavy oil due to destruction of associative bonds in a complex oil fluid. In a number of articles, it is proved that at a temperature of more than 200-250В° C there is also a certain chemical transformation of hydrocarbons, primarily containing hetero-elements. The use of finely-dispersed catalysts, injected directly into the oil-bearing formation, allows to intensify the processes of destructive hydrogenation of asphaltene...

The company "Skripinsky Quarry", LLC is mining the carbonate rock deposit. Planning the advanced processing of raw materials, the company is doing a lot of work to develop new types of products. The integrated approach to the territory development became the key for the enterprise developing the promising industrial projects. The competition of project proposals for the best use of Skripinsky quarry crushed stone screenings was organized together with D. Mendeleev University of Chemical Technology of Russia. The w...

The proposed paper presents the situation of the Aranca hydroameliorative arrangement located in the western part of Romania. The Aranca hydroameliorative arrangement was realized in 1965 and the completion of the land improvement works in this arrangement were realized between the years 1974-1977. Since the execution, a series of rehabilitation works have been carried out due to changes in agricultural practices in the area affected by climate change. This research assesses the state of the art as well as its fun...

The proposed paper presents the situation of the Teba-Timisat hydroameliorative arrangement located in the western part of Romania. Teba-Timisat hydroameliorative arrangement was realized in 1962 and the completion of the land improvement works in this arrangement was executed between 1985 and 1987. Since the execution, a series of rehabilitation works have been carried out, due to changes in agricultural practices in the area affected by climate change. This research assesses the state of the art as well as its f...

The article analyzes how the main factors influence the competitiveness of the economy. In constructing the model, three assumptions are introduced: a) there is a prehistory of the process, i.e. the variables that evaluate the competitiveness of the economy at the time t, also affect the values of previous periods; b) there is a mutual influence (interdependence) between the variables that evaluate the competitiveness of the economy; c) the variables that evaluate the competitiveness of the economy are influenced ...

Acid Orange 7 was heterophotolyzed using titanium dioxide, oxygen bubbling, back-flow tubular reactor, polychromatic radiation of high pressure Hg lamp and aqueous sodium bicarbonate, sodium hydroxide or sulfuric acid as solvents. Dependences of reaction rates on Acid Orange 7 concentrations have exhibited either straight-line (for lower initial concentrations) or a convex shape (for higher initial concentrations). Variations in shapes of kinetic curves observed were explained by the effect of decrease in both (i)...

Due to economic and social benefits it provides, transport is a key sector on which development is based. However, adverse effects of transport in terms of the environment, economy, and society ought to be minimised. The European Commission has developed standard indicators to evaluate negative effects of transport and its sustainable development in Union countries. This paper presents these indicators and provides their synthetic analysis. The indicators reveal that several countries (e.g. the Netherlands) develo...

The main idea of this paper is to develop a multi-agent system, integrating advanced control algorithms and acting scenarios, for optimizing energy management in an intelligent microgrid. In order to achieve this objective, it is proposed a flexible intelligent tool based on multi-agents, able to give alternatives for action to prosumers, through a specialized interface. In this respect, firstly are presented aspects related to the multi- agents (MAS) integration in smart grids? control. In the second part the wor...

One tenth of the European population lives in distressed areas where physical and economic plight is aggravated by social problems. In urban renewal, two emerging problems require attention: a) the inclusion of the local communities in making choices for land administration; b) the complex nature of the interventions due to the multiplicity, diversity and conflict of the elements involved. With the aim of providing an evaluation procedure able to aid public choice, to involve the community and to reach a shared ch...

Numerical modeling of vortex induced motions appears to be one of primary objectives of offshore constructions design. The flow around structure elements with certain elongated geometry shape as pipes, risers, mooring lines, oil rig legs etc., causes vortex induction, which in turn could lead to negative side effects such as cross motion or even to structural damage. The vibration process modeling in advance could allow the structures design and production without extra margins of safety and therefore the final pr...

Unglazed transpired solar collectors (UTC) are simple and effective devices for applications such air heating, induced ventilation, crop drying etc. A numerical model for typical unglazed transpired collector is proposed with blackened plate exposed to the sun and circular holes on square pitch arrangement in no wind working conditions. The steady-state conservation of mass equation, momentum and energy equations were considered in order compute the air pressure and velocities, flow pattern and the total air heati...

Buldan region is almost 45 km from Denizli (Western Turkey) province. Terrestrial sedimentary units are deposited throughout the Denizli Basin in age from the Early Miocene to Present. The coals are located in Middle Miocene K?z?lburun Formation consisting of conglomerate, sandstone and mudstone lithologies. Coal samples were studied using standard total organic carbon (TOC) and kerogen pyrolysis analysis of the whole rock samples and organic petrographic methods. Average TOC content, S1 and S2 values of investiga...

The article presents the importance of abandoned quarries for the mosaic landscape structure. Five objects {and} their surroundings in a 100-m zone located in the Polish Western Carpathians were analysed in terms of plant communities, flora, physical and chemical parameters of soils, and diversity of relief. The objects, which were originally used for excavation of marls, were characterised by the largest differences in soil parameters between the quarry and the surroundings. Xerothermic vegetation was noted to ha...

Humus comprises one of the largest reservoirs of carbon on the Earth. Nevertheless, humus and humus-derived products have been utilized to a relatively small extent in industrial applications. This is in contrast to coal, which was the basis of much of the chemical industry in the latter part of the nineteenth and the early part of the twentieth century, and petroleum which is the major raw material for much of the present day chemical industry. The purpose of this paper is to document an ability of a humus-like m...

Unconventional energy sources have gained and will continue to gain a growing share of energy systems around the world, both because of the research effort and the political will involved in their development, and because of the price increase of energy obtained through traditional methods. In order to take advantage of the opportunities offered by the international energy transition process, Romania must undertake new directions for development in the energy sector. Conventional energy sources based on oil, coal ...

In the article regulation concept in the field of environmental protection existing in the Russia was considered. Practical implementation of environmental regulation of air, based on the application of maximum permissible concentrations of air pollutants for green spaces, was discussed. A comparative analysis of existing air quality indicators in Russia and in a number of foreign countries was made. The results of calculations of integral indicators of atmospheric air pollution in two large cities of the Russian ...

This work devoted to study in situ combustion processes of different crude oil. The crude oils from different field of Russian Federation were selected. Oxidation process in reservoir conditions (50 bar and 50 В°C) were studied for all crude oils. The combustion study was investigated by accelerating rate calorimetry (ARC). This method is most suitable for studying the processes of oil oxidation in reservoir conditions. Arrhenius kinetic parameters were determined for crude oils. The correlations between API gravi...

This work devoted to study in situ combustion processes of crude oil at different pressures. The crude oils from Russian Federation were selected field. Oxidation process in reservoir conditions (50.7, 83.8, 101.2, 125.5 bars and 50 В°C) was studied for crude oil. The combustion study was investigated by accelerating rate calorimetry (ARC). Arrhenius kinetic parameters were determined for crude oils. The correlation between reaction duration and initial pressure was found.

The largest amounts of air pollutants are produced by the combustion of fossil fuels (coal, lignite, petroleum, natural gas etc.). This results in an emission of huge amounts of greenhouse gases into the atmosphere (carbon oxides (CO, CO2), sulfur oxides (SO2, SO3), nitro gen oxides (NOx), dust, ashes and soot and others. Significant share of the air pollution is communication, mainly wheeled transportation. Aviation contributes to the pollution of the stratosphere, which adversely affects the state of ozonsphere ...

There have occurred significant changes in the world political stage over the last more than 20 years. Events of the recent decades have changed territory, economic, social, natural resource and environmental situation in Russia. Nowadays up to 70% of territory of the Russian Federation, nearly half of northern land areas of the globe are regarded as territory of the nordic region and the Arctic region. The notion ?Arctic region? (?Arctic zone?) has no distinct definition, it is frequently equated with the notion ...

The development of methods for automatic preprocessing of observational data of small-aperture seismic arrays that precede the detection and identification of seismic events by the method of waveform cross-correlation is considered. Preprocessing is based on adaptive channel selection. The methods developed by us provide for the calculation of the quality metrics of the seismic channel by means of spectral and amplitude analysis of records. The selection of channels is based on the correspondence of the quality of...

The article is devoted to the problems of the agro-industrial complex of the Republic of Mari El, which are necessary to ensure sustainable economic development of the region in the future. In recent decades, the agro-industrial complex has been identified as the main, priority direction of development, stimulating growth. Nevertheless, the situation with the innovative activity of agricultural producers in the region continues to deteriorate. Therefore, modernization, based on the digitization of production and s...

The adoption and implementation of the strict provisions regarding the marine environment by the Maritime Maritime Organisation (IMO) resulted in imposing the limits for the SOx, NOx, and CO2 as the exhaust gas components. However, the limitations do not refer to fishing cutters/vessels. Given the number of the European fishing fleet, operating at the ECA areas, it should be expected that the limitations related to this group of vessels are implemented. In order to determine the degree of threat to the environment...

In ventilation systems, ground heat exchangers are becoming more and more popular, which can be considered as a passive air-conditioning system. Two types of heat exchangers are used: with a membrane separating ventilation air from the ground and membrane-less. The air preparation system described below is designed to simulate the temperature change conditions corresponding to seasonal changes. It was proposed to use a heat transport system using Peltier modules. As a result, it was possible to reduce or increase ...

Energy efficiency of buildings is one of the directions for implementing a sustainable community development program. The purpose of this paper is to present a calculation algorithm for the transfer of thermal energy between buildings. In stationery regime, this problem is reduced to solving Laplace's accomplishment with the given frontier conditions (Dirichlet's problem). For the general case, it is not known the analytical solution of these problems. Contemporary computing tools solve this problem using numerica...

Carbonate rocks, bearifng the majority of world?s hydrocarbon reserves often exhibit variable lithology. In carbonates, different proportions of calcite and dolomite, accompanied by other minerals can be expected. Dolomitization of carbonate rocks usually leads to porosity enhancement, since dolomite crystals occupy smaller volume in comparison to calcite. This paper considers the integration of Alizarine Red S staining method and image analysis in order to qualitatively state the content of both calcite and dolom...

In connection with the implementation of European Union's directives is necessary to make use of renewable energy sources (RES). The use of these energy sources is associated with the obligation to act in accordance with the sustainable development concept. In Poland, this concept is provided in Art. 5 of the Constitution of Polish Republic. In the paper, the overall structure of primary energy production in Polish economy in comparison to the European Union was presented in period 2011-2015. The production of ren...

This research focuses on the energy demand and the possibilities of covering the energy needs with renewable energy within the territory of Republic of Moldova. The evaluation of the alternative energy resources is extremely important as the Republic of Moldova mainly depends on Ukraine for imported energy. Developing new sources of energy will partially ensure the stability of the economy. The renewable energy will allow the balancing of the payments and will also strengthen, at least to a certain extent, the cou...

The purpose of hydraulic fracturing is to stimulate the well so as to significantly improve its performance. To achieve this, a fracture is created, which is then propped open with a propping agent. The success of this process depends largely on the fracture conductivity, which is the product of the fracture width and the apparent permeability of the proppant within the fracture. After hydraulic fracturing, well productivity is definitely affected by the interaction between the proppants and the fracture surface. ...

Dust and heavy metals pollution is the first-priority problem of Almaty city. The city is located at the foot of the Tien Shan Mountains in the Southeast of the Republic of Kazakhstan and has the following geographical coordinates: 77 E (east longitude) and 430 N (north latitude). As long as existing pollution monitoring system in Almaty city is represented just by chemical and analytical data acquisition, it is claimed to be inefficient. The purpose of this reseach is to employ the best mathematical toolkits in p...

The central part of the East European craton (EEC) is the site of extensive mining activity. The small aperture array ?Mikhnevo? (MHVAR) monitors the weak seismic events in the distance range about 500 km. The most of them are identified as industrial explosions using the S/P amplitude ratio, day-time distribution criteria, spectral content, recurrence and clustering of events. The detailed analysis of waveform variations allows monitoring of the change in the position of the explosion as well as the subtle change...

The aim of this research study is to perform an analysis of the eco-innovation trends and to identify the development opportunities in Latvia. The research methodology applied for this research study involves the theoretical concepts of eco-innovation trends and collects examples of existing and emerging eco-innovative practices in Latvia. The results of the research indicated that the eco-innovation trends in Latvia led to positive results and gave an impulse to increasing economic activities. For evaluation of L...

One of the main conditions for developing qualitative forecasts of energy consumption, as well as identifying the potential for energy conservation, is data on the energy intensity of production in industries. A regional analysis of energy consumption in the economy will help develop a comprehensive, long-term regional energy efficiency program balanced in terms of resources and costs. For Russia, this task is particularly relevant for two reasons. The first is due to the fact that the length of the territory of R...

The purpose of this work is to assess the ecological state of the Moskva River on the content of heavy metals in bottom sediments by the method of L. Hokanson. The method of determining the coefficient of bottom accumulation (CBA) was also used. The content of metals was determined by the X-ray fluorescent method according to the approved procedure. The analysis of the obtained data made it possible to draw a number of conclusions. First, the average level of some heavy metals (zinc, nickel, copper, manganese) was...

The study was performed at the former Jezi?rko sulphur mine (216.5 ha of afforested area after borehole exploitation). The area was characterized by the terrain structure and vegetation cover resulting from the reclamation process. The applied direction of reclamation for this area was forestry. The study investigated the possibility of applying the latest, freely available Sentinel-2 satellite images for the automation of land use and land cover (LULC) mapping, mainly in terms of monitoring the forest succession ...

One of the major environmental problems that is currently being raised is the olfactory discomfort. At present, the odor parameter is not regulated in national legislation, rather than in the Odor Immission Directive - OID- edition of 21 September 2004. The lack of a legal framework in terms of odor immissions constitutes an impediment for health of affected population and might have repercussions also on the economic development of the areas. Odors are one of the most emerging issues related to odor immissions fr...

A complex geological structure with the superimposed effects of over 200 years of coal mining activities is characteristic of the Upper Silesian Coal Basin, Poland. Intensive exploitation leads to deformations of the rock mass and ground surface as well. The deformation process developing in the rock mass causes an increase in strains that may result in rockbursts. In this paper the data obtained by the PSInSAR technique covering the northeastern part of the Upper Silesian Coal Basin were used. The aim of this pap...

Climate change is one of the greatest threats to the environment, the social and economic framework. In this paper we analyzed the phenomenon of climate change in the Danube Delta, Romania. In the first part of the study, we analyzed the causes and effects of climate change in this area and finally proposed some solutions to limit the effects of this phenomenon. As a research methodology we used the quantitative and qualitative analysis of the statistical data included in the Romanian Statistical Yearbooks and the...

Using vibration processing techniques in tilling is convenient due to design simplicity of the involved devices, as well as to efficiency reasons, such as soil compaction reduction. However, depending on the design of the agricultural machine and on the working regime, such methods can affect the environment, the comfort of the human operator and even his health. The paper studies some effects of the vibrations of an agricultural machine with an eccentric rotating mass, transmitted to the soil and to the human ope...

The paper considers the state of the vegetation cover of the high-mountain valley of Kok Jailau, which is located in the central part of the Ile (Zailiyskiy) Alatau Ridge (Northern Tien Shan). The results of the study showed a different degree of anthropogenic transformation of the vegetation cover. It is noted that in the natural (background) state the vegetation cover was preserved only in hard-to-reach areas, mainly in the upper part of the mountains (on steep slopes of the Kumbel Ridge, river valleys, etc.). T...

Within the outlines of work, based on foreign and Russian experience, the urgency of introducing small-scale generations into the real sector of the economy, including mini- thermoelectric plant (mini-TEPs) is stipulated. The main indicators that characterize the efficiency of power plants are provided. The basic techno-economic parameters of power plants, such as specific capital investments for the construction, the cost of electricity and heat, specific estimated operating costs and others, are analysed. Separa...

Fa?ade, as an external finishing of a building, gives the building its original character, obtained due to the choice from variety of forms and freedom in shaping. The decision to use a particular fa?ade system depends on the type of the object, the investor's requirements and financial possibilities, and the designer's creativity. This paper?s aim is to present the procedure of analysis that leads to a choice of the fa fa?ade system for a public building, including criteria such as: cost, technical parameters, ae...

The aim of the presented paper is to analyze the 10-meter wind (U10) conditions of the western part of the Black Sea during the present and near future interval. More precisely, 10 locations were studied. Regarding the geographical location, the points of interest are located in the range 40oN to 47oN and 27oE to 34oE as follows: 2 points are near to the Ukraine?s coast line, 3 to Romania?s coast line, 2 to Bulgaria?s coast line and 3 to Turkey?s coast line. Thus, for analyzing the wind conditions during the prese...

The issue of renewable energy represents an extremely important topic, both as regards Romania, as well as at a worldwide level. From this perspective, this work presents an analysis tool for the investment opportunities in this sector. On the other hand, it tends to clarify some issues related to the concept of renewable energy. From this perspective, the objective of this paper is to conduct a study through which an analysis will be presented related to the wind action on the wind turbines located in the Fantane...

Because of the limited resources of water and increasing demand for it, solutions for wastewater recycling and reuse have become of great interest. Wastewater can be recycled for the same purpose or can be reused for other purpose, but first it must to be treated. In this paper some scenarios of using Sequential Batch Reactors treatment of wastewater were investigated with the purpose of reusing or recycling in small-sized residences like chalets or guest houses. Simulations were done using BioWin, which is a powe...

The most ancient Late Paleozoic flora of the Verkhoyansk is known only on the western slope of the Orulgan Range, where relatively abundant complex of the Early-Middle Carboniferous vegetative remains was identified in the Bylykat Formation by N.A. Shvedov in sixties of the last century. The Bylykat Formation was defined as the lowest stratigraphic unit of the Verkhoyansk terrigenous complex, exposed in the core of the Orulgan anticlinorium [8]. Volume, division into subformations and stage belonging of this predo...

The load forecasting problem is very important for every distribution system operator. The network evolution, associated behavior, related policies, etc. are correlated with this subject. Thepaper is focusing on monthly load curves forecasting. Artificial intelligence based methods such as artificial neural networks and also conventional methods are appliedin order to perform the forecast. A comparison is accomplished in order to provide thebest approach. To achieve this goal several indices have been computed and...

The paper focuses on the results of mathematical modeling aimed to prove the possibility of application aluminum casing for Pulse Neutron Logging (PNL) tool. The simulation was carried out by the Monte Carlo method. A number of time decays for aluminum and steel cased PNL apparatus were calculated for carbonate rocks with different porosity. The model is represented by a rock with a 216 mm diameter well. 146 mm diameter steel column is cased in the well and has filled with fresh water inside. The PNL device is loc...

The exploitation of petroleum deposits in Romania within the ?icleni Petroleum Structure is based on the technological process consisting of drilling for exploration (exploration wells) or for extraction (extraction wells) in three phases. As a consequence of the direct or indirect discharge of crude oil and salted water, the quality of the soil and of the groundwater is affected by petroleum hydrocarbons, chlorides, gases and other organic compounds. Biodegradation is an effective method for decontamination of so...