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Building stone quarrying companies in the Republic of Karelia commonly have limited information on the geological structure of a deposit. They do not have their own geological survey, and this type of service is not yet properly offered in Karelia. When product quality problems arise, it is difficult to rapidly find the correct solution. The quality of raw materials at any quarrying stage can be analyzed using GIS applications at the initial stage of quarrying in order to collect and systematize information on the...

Rare earth elements form the group of 15 elements from the lanthanide group (La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) and two elements from the scandium group (Sc and Y). The lanthanide group can be divided into two subgroups: Light Rare Earth Elements (LREE) and Heavy Rare Earth Elements (HREE). The variability of the content was determined for LREE (Ce ? cerium, lanthanum ? La) and elements from the scandium group (Sc ? scandium, Y ? yttrium). The analyzed samples of bituminous coal were c...

Establishing public policies that result in decision-makers and citizens who are much more active when drafting, using, or pursuing how to implement strategies on proposed goals through sustainable development. Romania's National Strategy on Sustainable Development is based on the European Union Strategy for Sustainable Development with the set-ups set in Lisbon, and it is meant to be a binder for the elaboration and establishment of new public policies, which have the effect of changing the attitude of the societ...

D?mbovi?a River flows through Bucharest, capital of Romania, from NW to SE, bringing something from the nature in our capital. Since 1986, at the entrance in Bucharest, in order to control floods, it was realized Lacul Morii reservoir and the riverbed of D?mbovi?a was regulated along the city. ?Lacul Morii? reservoir is the largest lake in Bucharest covers an area of 246 ha and has as other potential water uses: providing water for CET Groz?ve?ti, irrigation, pisciculture, production of electricity. The reservoir ...

In this paper, a PVC filled with a biodegradable polymer, such as polyhydroxybutyrate, was investigated. Polyhydroxybutyrate is a natural biopolymer, but its use limits its high cost. These polymeric composites were obtained by rolling. Thermal and thermomechanical properties of polymer composites based on PVC containing various amounts of polyhydroxybutyrate are studied. It has been determined by differential scanning calorimetry method that the glass transition temperature of PVC decreases with increasing percen...

Plastic is often one of the major components of municipal solid waste and its processing product Refuse Derived Fuel (RDF) and thus, waste plastic is an alternative energy resource of importance for implementing Waste-to-Energy strategy. The aim of this study is to investigate the thermal decomposition characteristics by means of thermogravimetric (TG) and derivative thermogravimetric (DTG) analysis of plastic commonly found in municipal solid waste from perspective of possibilities to use gasification as a proces...

This paper proposes a forecasting model based on time series technique for solar energy generation. The increasing use of renewable energy from solar and wind sources has gained acceptance and is being increasingly used. The main problems with these energies sources are the dependence of power output on the environmental parameters and the circadian variation. In order to obtain a continuous time series, average daily specific power records, W/m2, are used and moving average and exponential smoothing were tested t...

The time-dependent seismicity along the North Anatolian Fault Zone (NAFZ, 38В°-42В°N, 23В°-42В°E) is examined by means of the Decelerating-Accelerating Seismic strain release (D-AS) model. The model relies on observations of decreasing Benioff strain release several years before a strong earthquake, in the vicinity of the fault to be ruptured (seismogenic region), and increasing strain release in a broader area around this fault (critical region). Both patterns are manifested by moderate magnitude earthquakes (pre...

Allocation of electricity exchanges between bidding zones represents one of the major challenges of European Electricity Market. Initially, it was an ATC capacity basedallocation mechanism for electricity markets. Currently, a powerflow based allocation method it is intended to be implemented. Starting from the premise to more efficiently use the transmission networks, the authors addressed the issue of transmission capacity and their related transmission costs allocation from theperspective of zonal approach. Aut...

A total number of 22 tsunamis were generated in the Black Sea in the past, as stated in the literature. Three from the twenty-two events were triggered by earthquakes occurred in Shabla area, the most dangerous one for the Romanian and Bulgarian shores, as follows: the oldest one, in Bisone area, 1st Century BC; year 543-544 AC, an earthquake of 7.5 M triggered waves of 2 - 4 m; the most recent, on 31st of March 1901, a 7.2 M earthquake generated 2.5 - 3 m tsunami waves, or 5 m according to other sources. The TRID...

The first major crisis in the history of the economy was "Tulip Mania" in Holland in the 1630s. Tulip, a flower spread in Iran, Turkey and Afghanistan, was first studied by the Flemish botanist Clusius, who brought the first bulbs to Europe at the end of the 1500s. He planted the tulips in a "study garden" of the University of Leiden. The interest of the people for the beautiful flower, called by the Iranians "Laleh", has been great since the beginning. Clusius notes that in 1598 the thieves stole 100 bulbs in one...

Present article contains new data on detailed study of typomorphic features of placer gold of the Krutoy creek (Khatyrkhay ore-placer cluster, Southern Yakutia). Basic typical characteristics of native gold are identified: granulometry, morphology, chemical composition, trace elements, micromineral inclusions and features of inner structure. Used traditional complex of analytical methods of studying placer gold allowed obtaining information about mineral type of primary mineralization and identifying association b...

Silesia Province, which is located in the southern part of Poland, belongs to regions with the most degraded lands in the whole country. According to the ?Environmental Protection 2017? (in Polish ?Ochrona ?rodowiska 2017?) report, prepared by the Central Statistical Offiice, in 2016 there were about 4900 ha of devastated and degraded areas in Silesia Province, which required reclamation. The reason for the occurrence of degraded lands in this area is the intensive exploitation and processing of natural resources....

Biodiesel is well known alternative energy source to conventional fossil fuels. The most common production method of biodiesel is vegetable oil transesterification with methanol, which leads to glycerol formation. Increasing worldwide production of biodiesel causes considerable surplus of glycerol. To solve this problem, biodiesel production method from vegetable oil via interesterification is topical, via interesterification gycerol can be replaced with by-product, which is not necessary to separate from the biod...

The aim of research was to develop technical conditions for theproduction of biodegradable polymer films with usage of native and modified maize starches. The expected effect is the expansion of the range of modifying components for biodegradable polymeric products based on low density polyethylene and the reduction of pollutants emissions into the environment. It was determined a ratio of components for the production of thermoplastic starch (TPS) and parameters of extrusion processing of polyethylene and plastic...

The diversity of sites with a high proportion of metals is characterized by the occurrence of specifically adapted microorganisms. Their identification and subsequent accurate genotypic and phenotypic characteristics are a prerequisite for further practical applications, especially in bioremediation processes. The article deals with evaluation of biochemical features for fenotypic identification of bacterial microorganisms. 30 new isolates of gram-positive microorganisms of genus Arthrobacter, Bacillus, Brevibacte...

The relationships between vessels and water environment in which they do exploitation tasks are presented in this paper. In conjunction with that fact that vessels are the biggest means of transport, they also have the biggest propulsion units having substantial influence on polluting the natural environment. Therefore an attempt of analysis whether replacing liquid hydrocarbon fuel with alternative fuels reduces degradation of the environment was made. For this purpose an analysis of alternative fuels, mainly bio...

The article herein concerns direct conversion of thermal energy into mechanical energy of fluid motion by means of a specially designed thermomechanical pump. The conditions of fluid boiling in constraint environment were considered. The peculiarity of fluid evaporation in constraint environment when no natural convection is developed in the tubes is periodic overheating and explosive growth of vapour phase which leads to shooting the fluid out of the tube. Vapour slugs formed under slug boiling conditions are the...

The issues of rational use of land resources have become increasingly relevant, as all economies depend on the goods and services provided by the natural environment. Soils as a natural resource perform a number of key environmental, social and economic functions. In Latvia, utilised agricultural land occupies 2.3 mln. ha, yet no research investigations into organic soils have been conducted. The use of agricultural land, organic soils in particular, is associated with negative environmental impacts. Therefore, th...

Kalman filter is a set of mathematical equations that provide an efficient and recursive calculation of the means to estimate the state of a process, in a way that minimizes the average square error. The filter is very powerful in several aspects: supports estimations of past, present, and future states, and it can do so even when the precise nature of the shaped system is unknown. The concept of "closed loop" in Reservoir management is currently considered significant in the oil industry. The technique of updatin...

Application of geophysical methods when purposefully deployed, is an efficient tool for getting excellent information while resolving many tasks in various disciplines. The article is about utilisation of data gained by deploying electrical resistivity tomography while resolving stability of non-stable rock block. In this case the task of the mine meter was to calculate volume of eroded rock in discussed rock massif. Information of geophysical measurement by non-traditional method were used. In this case are resul...

This paper deals with alternative options for the recovery of ash from metallurgical production, which is considered to be waste generated by the above-mentioned production process and is currently being disposed of by landfilling. It is precisely the recovery of such waste that contributes to the sustainable development of the environment, to the increase of the metallurgical business itself and thus to the preservation of its competitiveness. Based on quantitative and qualitative analyzes of the ash produced, it...

Nowadays a biomass belong to main sphere of interest by reason of global energy politics. A many researcher works are concentrated on feasible solutions according with the politics a main strategy to elimination of energy and environmental load. This work is fall under solutions for energy saving and fossil fuel substitution by biomass. In concrete, the interest of authors is in iron ore sintering area and utilization of biomass as a part of sintering mixture or as a partial replacement for agglomeration coke. The...

Reliability of renewable energy generation forecast became particularly important since its share denotes a constant growth in the global energy mix and the uncertainty of supply continuity resulting from this rises. Given the numerous geographic and meteorological factors that greatly influence the results of a more general probabilistic determination, an accurate prospect is hardly possible when enlarging the territory or the time span. Moreover, power systems disturbances and load variation, also unpredictable,...

The article deals with the use of voluntary associations of municipalities for investment purposes in connection with regional policy. Voluntary associations of municipalities represent one of the ways of interregional co-operation. Usually they take form of a public group or association as a legal entity and the purpose of all associations of municipalities is to provide public services to their members. The aim of the article is to find a possible way of financing investment activities in a community with a focu...

The main objective of the paper is to propose an innovative approach to analyzing the vulnerability of electricity networks from natural hazards. The proposed innovative approach is based on the principles (technology) of virtual reality (VR). The main features and advantages of VR are discussed. The possibilities of VR for the study of the negative impact of natural hazards on the infrastructure are analyzed. The importance and timeliness of an in-depth analysis of the vulnerability of electricity networks from t...

History of water supply and sewerage systems dates back to ancient times, since water is a scarce resource needed for life. Worldwide, it is possible to find the remains of various drinking water pipelines. Various ways of dealing with wastewater are also documented. This article deals with water management in the Czech Republic area. The topicality of the text is supported by the fact that not all residents in the Czech Republic are currently supplied by drinking water from public water systems and the proportion...

This paper presents a novel control system design for the wind turbine model with PIC microcontroller power control system. The system uses Doubly Fed Induction Generator (DFIG) for wind power generation to generate electricity. For controlling power generation process the system applies microcontrollers PIC operating in multitasking mode. The proposed PIC controlled DFIG not only provides a low cost solution to today?s electric power needs, but also is aimed at delivering better power quality, making it ideally s...

Zarechensk barite-polymetallic deposit is located in the northwest part of Ore Altai megatrough, which has long-lasting history of its development and complicated geological structure. Within the ore district, which is the northwest part of the devonian Zmeinogorsk-Bystrushinsky trough, ore mineralization is associated with the system of northwest border faults and cross branch faults. At these deposit four main stages and five phases of minerogenesis were determined. The first stage is the stage of oregenesis beg...

Carpathian Foredeep (CFD) is a mature Petroleum Province, where conventional biogenic gas has been produced since 1950s. At present the CFD is again object of petroleum prospecting, this time, as unconventional gas province. To improve resolution of this analysis, regional 3D structural model was constructed and divided into six main depositional complexes by developed on the basis of seismic data and geophysical logs interpretation. The model is located along the front of the Carpathians covering area ~4500 km2. ...

The impact of climate change on agricultural sector has grown in the last decades from local to macro-regional scales. Based on 14 indicators, a comprehensive image regarding the interrelationships between socioeconomic and climatic factors was obtained for characterizing the agricultural sector from Teleorman County, Romania during 6 years. An analysis of available time series was performed to obtain descriptive, associative, and comparative statistics of the data set. Pearson correlation was used to estimate the...

The biogas obtained through processing of livestock residual waste (dung, manure and residual food), food production waste (fruit, vegetable, meat and dairy residues) and also effluents from industrial and municipal wastewater treatment plants can have a significant contribution in energy supplying and environmental protection. In order to determine the quality of this renewable fuel, it was developed a fast gas-chromatography method, through which it can be establish the calorific values, that have an important i...

The article deals with a basic economic image of the inland company Severo?eskпїЅ doly a.s. from 2010 until 2014. It is a company producing most brown coal in the Czech Republic. An economic insight into the company reveals important information for investors, but also for employees themselves, eventually it provides suppliers and customers with many useful data. The article presents basic economic indicators within a chosen period, their development and overall evaluation. It is indeed the economic analysis of th...

The surface water streams in the ore mining areas are subject to intense contamination with heavy metals and toxic elements. This type of pollution is a widespread problem nowadays. Detecting the geochemical patterns of the migration of heavy metals and toxic elements, together with their impact on natural environments, is a key aspect of ecological and geochemical research. This study is proposed in order to evaluate the state of the surface water streams in impact zones pertaining to the technogenic formations o...

Geo-electrical sections were constructed according to electrical resistivity tomography data on Shahtama tailings of Mo- ore processing plant (Transbaikal Kray, Russia), located in the permafrost zone. The capacity of technogenic deposits was determined and the zone of the fault was delineated. A wide range of electrical resistivities (ER) of mine tailings was revealed due to their different particle sizes, humidity and partially frozen condition. The statistical analysis of the distribution of resistivity of tech...

The evaluation of the behaviour of natural stone applied in the built heritage of the historical centre of Porto city, Northwestern Portugal, classified World Heritage by UNESCO in 1996, has been carried out using a multidisciplinary approach in order to characterize both the rock that constitutes the main body of the building and the deterioration processes that have developed on the stone as a consequence of environmental and anthropogenic factors. Among an extensive and monumental historical heritage, built wit...

In comparison with other economic sectors, the agriculture is known for its specific characteristics. First, the production processes in agriculture are supplemented by a factor of the impact of natural conditions, weather, the length of the production cycle and associated length of current assets turnover. Financing of agriculture is formed from public or private sources in the form of equity capital, loans or gifts to enhance the development of this sector. It includes not only government funds through various g...

In this work, synthesis and swelling of a superabsorbent hydrogel based on copolymer of acrylic acid and acrylamide filled with pectin were investigated. The structure, thermal stability, sorption capacity and morphologies of the developed composites were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric and differential scanning calorimetry analysis (TG-DSC), voltammetry and scanning electron microscopy (SEM). In addition, the swelling properties, and the stimuli-responsive behavi...

The numerous cases of the upper headwaters drying are observed in the plains of the Middle Volga region. The reasons of the streamflow change pertain to the reduction of forest vegetation and the change of its species composition. More than 1000 cartographic materials for more than 200 years, as well as aerial and satellite imagery were used during the research of forest vegetation breadth. Currently, the forest and the forest-field landscapes prevail in the north of Tatarstan, where coniferous-deciduous forests a...

Rare earth elements (REEs) are a group of 17 elements including scandium, yttrium and 15 lanthanides. There are a number of applications for the REE in different industries, e.g. super magnets in electrical engines in vehicles and generators in wind turbines, fluorescent lights, catalysts for the automotive end petroleum industry. REEs are crucial concerning the rapidly developing clean energy applications and with the highest risk of supply. To meet the future demand, it is necessary to develop efficient, economi...

Energy production from renewable sources, such as wind energy, in small-scale generation systems can be increased by improving the efficiency of power generating equipment and expanding the applicability of the implemented technologies. The performance of wind turbines can be improved by developing solutions that expand the range of wind speeds over which energy can be effectively generated and by optimizing the location of wind turbines. The presented system for multipoint measurement of wind parameters (SMMWP) i...

In connection with finding - out of a question about probable feeding of deposits by hydrocarbons, acting from the basement, the results of integrated geologicalgeochemical research of the dynamics of variation of chemical and geochemical parameters of oils and bitumen from the rocks of sedimentary cover and basement in the zones of probable inflow of hydrocarbons at the central areas of the Romashkino oil field are presented in this work. Also the results of researches on comparative studying of changes in organi...

Oil-saturated Visean dolomite reservoirs were studied from the Tatarstan Republic, east of Russian platform. The main methods of study were X-ray and SEM analysis. Dolomite forms interstratified dense and porous layers with thickness of 0.5-4.0 m in oil-saturated parts of reservoirs. The dolomites are characterized by rhombic form of crystals. Many of them have crystal growth zones as alternate micro-layers with different iron content. In the pore space of dense dolomites find some iron accessory minerals such as ...

One of the main problems in the exploration of porphyry copper deposits is the process of acid rock drainage and metal leaching (ARD/ML), that develops during storage enclosing rock in a dump. ARD/ML is formed by the natural oxidation of sulfide minerals exposed to air and water. It leads to the production of acidic, sulfate waters and results in the heavy-metal contamination of surface and ground natural water. Standard procedures for the evaluation of waste rocks ARD/ML potential are static and kinetic tests. St...

The technology of microbial fuel cells (MFC) makes it possible to obtain electricity by eliminating and utilizing wastewater components [7]. The promising biological agents in the MFC are microbial associations. The presence of strains of different species of microorganisms allows consortia to consume a much wider range of compounds. Multicomponent makes them more resistant to negative environmental influences. An example of such associations is the sludge of treatment facilities. As part of most wastewater enteri...

Wastewater treatment plants are essential in terms of environmental protection. The processes taking place into wastewater treatment plants are complex and require specialized machinery and equipment capable of operating in special conditions. Starting with the Sequential batch reactor (SBR) system (biological mechanical, chemical processes are carried out in the same basin), it could be reached a complex architecture with separate tanks, resulting scheme with predenitrification-nitrification, nitrification-postde...

This article discusses the questions of agroecology, its role and significance in the modern economy. It emphasizes the impact of agroecology on food production, country food security ensuring, as well as contribution to the sustainable agriculture. The authors also accentuate the relationship of agroecology with sectoral clusters, which are one of the modern forms of economic activity organization in agro-industrial sphere of Russian Federation economy. The article describes preconditions of the clusters formatio...

Lowering energy consumption in the residential sector is one of the main priorities in the European Union. This can be achieved by increasing the thermal insulation of the buildings and using renewable sources for energy. One of the most common solutions is the use of heat pumps to produce thermal energy for heating / cooling indoor spaces and for domestic hot water. The geothermal heat pumps are used, but with increased efficiency of air/water heat pumps, they become effective solutions. This work studies the eff...

This paper presents the integral equations of the direct problem of magnetic prospecting with respect to demagnetization. These equations are derived for a two-layer medium model. The method of determining the intensity of a secondary magnetic field for the case of magnetizing by a static field, which potential is a harmonic function, is described. The respective integral equations are written based on the theory of a simple layer potential. An iteration algorithm for solving the three-dimensional structural inver...

One of the main environmental issues of society today is the continuous increase in the amount of organic waste. Sustainable organic waste management no longer supports old practices that involved uncontrolled releases, landfill storage or incineration. A potential solution is converting organic matter into energy. Previous papers dealt with energy recovery of animal proteins and fats from tanneries into biogas and biodiesel after separation of the two components by pressing-centrifugation at temperatures of 60-80...