Browse

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...

The article is devoted to the consideration of environmental and social factors in the management of territories and enterprises. Such consideration is crucial for the sustainable development of the territories. The authors use cognitive modeling as a tool. Building a model of the system in the form of a weighted oriented graph allows to take into account factors of different nature in complex interaction. Information for building a model can be obtained from a baseline environmental assessment or an economic and ...

The basic idea of conjugate physics-mathematical modeling is a direct transition from the PC to the industrial realization. This promise can be partially implemented by pairing of qualitative and quantitative assessments of the physical and mathematical images. Article systematized and summarized the main provisions and results of our works on this subject. Quality modelling allows to use the law of conservation, de facto directly for microsystems, as well as for macrosystems, being, its type, construction scaffol...

In the zones of boreholes drilled to explore and extract hydrocarbons uncontrolled migration of gas to soil environment and therefore to atmosphere may occur. Such phenomena may be related to insufficient tightness of the rock mass or poor technical condition of the borehole. Due to the occurrence of potential risks to the environment and human health and life, a set of constant monitoring probes was designed and tested. Location of six permanent monitoring probes were based on the results of surface geochemical s...

Changing the shoreline is an element of great interest for the coastal communities. The multitude of social, economic and environmental activities that take place in the Romanian coastal area requires a strategic approach. In the present paper, we are discussing strategic options for human intervention in the Romanian coastal zone. Engineering works to protect coasts from coastal erosion must be closely linked to human activities that take place in the coastal area, even though we are talking about tourism, transp...

One of the most common problems reported in the mature oil-producing regions of the world, i.e. related to the fields that are in a state of declining production or reaching the end of their productive lives, is associated with organic deposits forming both in and around the wellbore. Paraffin, resin and asphaltene deposit (ARPD) has been a problem for operators in many areas since the beginning of petroleum production from wells. There is a variety of techniques and means to control these deposits, and the most p...

This study presents the investigations above the massive masonry elements in order to analyze the long term behavior for the patrimony buildings subjected to the environmental factors and the strong seismic movements occurring during their lifetime. Although the patrimony buildings was structural rehabilitated after the major earthquakes occurred during its lifetime, the cracks in foundations were neglected. One of the causes of degradation is the capillarity of the soil water through these cracks. Excess water ac...

The article considers modern operating systems for increasing energy efficiency at the municipal and regional levels. Present successfully applied practices in other regions are given. The essential distinctive features of the proposed system for the Belgorod region are revealed. Described, developed methods and algorithms for managing energy con-servation in the budget sector. The structure of complex interaction of the developed modules used in the created software component is offered. The regional and municipa...

Cement is a silicone-based hydraulic binder, obtained by fine grinding of its components: clinker, limestone, gypsum, blast furnace slag, possibly grinding additives, but also other components such as kiln dust (CKD). The clinker is the most important component of cement, which is a granular material obtained by burning a powdery mixture of limestone and clay, with possible correction additives, in a furnace at 1450oC. The milling of clinker and other cement components is accomplished by means of ball mills with t...

Evaluation of explosion-proof protected electrical equipment in scope of certification is extremely important considering the risk of explosion that has to be minimized in order to ensure life safety and health of workers and to prevent damaging of property and the environment, as well as free movement of goods when they meet the essential safety requirements at European level. The purpose of this paper is to present aspects regarding the importance of thermal endurance tests performed on the electrical equipment ...

This paper presents the first year of the field experiment to evaluate the possibility of growing corn (Zea mays ssp. mays) in mixed culture (MC) with selected leguminous species. The main objective was to monitor the influence of MC agrotechnology on the yield of maize, individual leguminous crops and evaluation of biological yields through using the Land Equivalent Ratio (LER) for each variant of experiment. The selected legumes plant and corn were grown separately like sole crop (SC) or in MC (legumes and plant...

Mapping, assessment, protection and their introduction in thematic circuits are steps which, once completed, will turn the geomorphosites near Topli?a resort into benefits for tourism. Methodology consists in field research, inventorying and evaluating various geomorphosites, based on scientific and cultural values. Topli?a resort developed in the volcanic area of the Eastern Carpathians, at the entrance in Topli?a?Deda defile, underneath the volcanic calderas of the C?liman Mountains and the Northern Gurghiu Moun...

Lichens are widely used in studies of identification of various types of natural and anthropogenic pollution. As for mosses, they accumulate heavy metals and rare-earth elements. It makes them applicable for studies of a territory with long-term man-made pollution of the atmosphere. To evaluate the atmospheric air pollution in Tomsk and Prokopyevsk (Russia, Siberian region), the following two comparative analyzes were made in this work. Firstly, the elemental compositions of ash residues of epiphytic mosses and li...

In Romania, most agricultural farms are subsistence farms and have to face two major problems: lack of capital and impossibility to sell their own production on the market. In the farm production costs, a significant share is represented by the fuel costs (Diesel oil); that is why the authors of this paper evaluated the possibility to lower the costs on the agricultural farms by producing biofuels for the farm own needs. The research work took place at the Banat University of Agricultural Sciences and Veterinary M...

Ecological state of the Lower Section of the Dnieper River was estimated by method of calculation of integrated index on the basis of monitoring over the years 2013?2016. Self-purification potential and capability of restoration in time and space (along the river stream) of the aquatic ecosystem of the lower section of the Dnieper River was established. The method for assessing the quality of surface water by hydrochemical parameters in accordance with the fishery standards as the most sensitive to changes of the ...

Background: In Poland, there has long been a statutory obligation for economic entities to report minimum information on the natural environment, usually of a non-financial nature. After the implementation of Directive 2014/95/EU on the disclosure of non-financial and diversity information to the Polish regulations (Accounting Act), there were changes in the scope of environmental disclosures and the group of enterprises covered by this reporting obligation increased. The implementation of the new directive into P...

The issue of minimizing the negative impacts of industrial enterprises on the different components of the environment is becoming an increasingly discussed topic in many expert and scientific forums. Despite the fact, that large industrial enterprises are trying to comply with applicable legal standards, using of modern technologies and preventative measures to prevent the occurrence of emergency events, it is not possible to completely exclude the occurrence of these emergency events and their negative consequenc...

In the modern economy competitiveness is put forward as one of the conditions for economic recovery. In order a sector to be competitive and viable in the long term, and to significantly succeed in its activity over time, it has to be ensured with financial stability. The aim of the research is to assess the financial stability in the Latvian fisheries sector. On the ground of the assessment methodology offered by the author and guiding by the available data and their quality, the author analyzes the financial sta...

Infrastructure development of mineral fields, mining and processing of raw minerals usually cause substantial degradation of the environment. Therefore, projected construction of mining enterprises (MEs) envisages a detailed study of geoecological state of the mineral field territories at all stages of ME?s life time. Intensive growth of the mining industry, significant technogenic loads on the environment and the need for addressing industry-specific environmental protection issues stipulate the relevance of such...

Nowadays are developed the global ambition to increase the environmental awareness of European countries. The result is the creation of new environmental directives and acts. Several tools have been developed to assess environmental impacts, some of them are mandatory as Environmental Impact Assessment or Environmental Risk Management (are set in Act no.24/2006 Coll.) and some of them are optionally. The best known optional tools are Eco-Management and Audit Scheme (EMAS), Green Public Procurement (GPP) or Life Cy...

Currently one of the most worldwide significant tendencies is global warming. The greenhouse effect connected with increasing emissions of technogenic gases into the atmosphere is considered to be the main reason of global warming. Greenhouse effect has negative impact on environmental footprint. At the present time the mankind is obliged to take into consideration an ecological factor and make decisions to reduce ??2 emissions into the atmosphere. Up to date there is enough world experience of implementing projec...