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The demand for natural resources and the associated need for drilling works will continue to grow. This is mainly due to turbulence in the markets for trade and transmission of raw materials by pipelines between countries. In addition, the aim is to become independent from external supplies. Growing demand for natural resources (petroleum, natural gas, shale gas, etc.) will increase the volume of drilling works. They interfere directly with the environment at their place of performance. Through the use of new tech...

Over the last few years, science has advanced unprecedentedly in explaining phenomena and facts with a high impact on society: earthquakes for example. On the other hand, new technologies are transforming the way (seismological) information is collected and transmitted to public and other various stakeholders categories. From interactive multimedia content to immersive experiences, difficult concepts become easier to be transmitted and understood by a wide variety of audience, starting with children, a most import...

Online monitoring of plankton in lake-type reservoirs requires the development of a model which is based on previous information, can assess the current state and predict the concentration of plankton in the future. An improved view of previous periods is possible on the basis of reanalysis techniques. These data can be used as a basis for modeling the profile of wind characteristics and the temperature profile which varies with its influence. A one-dimensional model for lake type reservoir is used in the program ...

Current research directions in the field of both architecture and constructions are aimed towards satisfying the userпїЅs need in an ever-growing context that is struggling to drastically reduce energy consumption related to buildings. When designing housing units, that are always changing and evolving, it is imperative to consider developing a building envelope which seamlessly adapts to its surrounding climate conditions, so that exploiting and maintenance costs can be reduced according to the userпїЅs financial...

We propose a model of a programmable quantum processing device realizable with existing nanophotonic technologies and which can be viewed as a basis for new high performance hardware architectures. The physical architecture is formalized by a mathematical model of the Quantum Processing Unit (QPU), which is a hardware-specific modification of the quantum circuit model of computation, and it is universal as well, since the available set of operations provides a universal basis for quantum computations. The proposed...

In recent years one may observe a rapidly growing demand for spatial information used in the decision-making processes concerning the functioning of States and the quality of citizensпїЅ life. The number of institutions that record data as well as the quantity of information also constantly keeps growing. Official databases containing spatial information are created and run in Poland and the Topographic objects database (BDOT10k) is one of the basic databases covering an area of the whole country. An essential com...

In this article the air infiltration through the envelope of a naturally ventilated building, located in Bra?ov (Romania) is studied. The paper presents the study of the factors which influence the air infiltration пїЅ wind effect and stack effect пїЅ and the modeling of air change rate (ACH) inside the building, by Multiple Linear Regression (MLR) modeling. It has been found that ?T can be a good predictor of ACH because of its high physically correlation with this. Another conclusion of the study is that althoug...

A mathematical model of the dynamics of pressure swing adsorption (PSA) process during the separation of multicomponent gas mixtures with the aim of producing hydrogen has been developed. The model allows to calculate the profiles of component concentrations (H2, CO2 and CO) and temperature in gas and solid phases, the pressure and velocity of the gas mixture along the height of the adsorbent depending on time. As a result of the computational experiments, the effect of changes in the temperature, composition, and...

Historical buildings require advanced measurement tools and techniques to be documented in detail and precisely because of their different natural characteristics, different dimensions, and complex architectural constructions. In this study, precise measurements were made with TotalStation, and photographs of historical works were taken from different angles. The obtained raw data were evaluated in a computer environment and a 3D model was obtained. It has been observed that the use of this system, which has start...

The article presents modeling data on taxes and average annual salary in Bulgaria. This information is stored in a created relational database containing twelve tables. Updating the database is done each year, and the respective new records are entered into the indicated tables. The data about the taxes that are included in total expenditure of households by expenditure groups, average annual salary in Bulgaria and average annual salary by regions (North-West, North Central, North-East, South-East, South-West and ...

The aim of the work is to assess consequences of polychaetes Marenzelleria spp. invasion for the Gulf of Finland ecosystem in a future climate. With this objective benthic submodel of the 3-dimentional eco-hydrodynamic Saint-Petersburg Baltic sea Eutrophication Model (SPBEM) was applied. In the model 4 numerical experiments were carried out: 1) 2 control runs excluding the effects of Marenzelleria spp. under two different scenarios of global climate change (based on ECHAM5 model of Max Planck Institute of Meteorol...

The granulation process is a common method of increasing the size of grains of the bulk materials. Doing so allows to create a relatively stable structures, among others to facilitate material transport and reducing generated dust. The granulation process, however, is quite complex one, especially due to the variety of materials undergoing granulation (for example energetic materials or fertilizers) and the sensitivity of the process input parameters. The article presents an innovative method for studying the gran...

Parameters of local scours in an unprotected part of the riverbed behind the hydrosystem end structures are determined by distribution of kinematic characteristics of the flow. The kinematic characteristics in cross-sections of a natural part of the riverbed depend on a number of factors, including the bottom roughness, flow depth and water surface slope. To solve the problem of calculating the velocity distribution over the cross-section of the drainage channel, we used Navier - Stokes equations for the uniform s...

Year by year, the growth of the share of heavy oils in the total volume is steadily increasing. For development of highly effective methods for its processing, approaches to modelling their properties should be elaborated. This thesis is dedicated to deriving and substantiating a formula for calculation of the velocity field in the round pipe volume as adjusted for rheological features of the flow of heavy oil suspensions. The suggested approach is based upon rheodynamics equations reflecting the flow of a rheolog...

Forecasting of viscosity value in blending of oil products is an important production task, settlement thereof influence the selection of its pumping mode and a number of other technological aspects. Quite high-precision models have been offered for the objects similar in viscosity, but at significantly different value of viscosity for the mixture components there is a great error. Graphic diagrams of interaction of petroleum-bitumen suspension-kerosene mixture viscosity at various ratios of its components and var...

The results of the electron temperature distribution modelling in the F region of the subauroral ionosphere for different helio-geomagnetic conditions are presented taking into account magnetospheric heat fluxes. The study has been carried out using the threedimensional model of the high-latitude ionosphere in EulerпїЅs variables which taking into account its thermal regime. It is shown that during the period of low solar activity in winter solstice condition the displacement of poles leads to regular longitudinal...

The erosion of the soil is characterized for the disaggregation and transport of the superficial material, promoted by the hydric or eolic action, leading to the impoverishment of the soil, and in extreme cases to the desertification. This process is complex and depends on a multiplicity of factors that differ in the time and space, whose universality and simultaneous particularities, becomes it difficult to equate and to quantify. Modeling can provide a quantitative and consistent approach to estimate soil erosio...

This article is considering anthropogenic and natural pollution, which leads to a change in global temperature. The article also talks about the Greenhouse effect and global climate change. The average global temperatures can fluctuate within years and even decades, for different natural reasons. The article analyses how the world pollution leads to a change in the global average temperature. The aim is to create a model that will show us the relations between the changes in global average temperature with the pol...

Asphalt-resin-paraffin deposits deposited in the extraction of oils considered difficult to recover are investigated. Specific features of asphalt deposition of resin-paraffin deposits, caused by different content of high-molecular components in them and their properties, are revealed. Redistribution of petroleum paraffin hydrocarbons and asphaltenes between oil and asphalten-resin-paraffinic deposits deposited from them is shown. The process of precipitation of high-molecular components from heavy oil under dynam...

A significant part of the salinized lands is situated in the continental Asia. These areas include the south of Western Siberia, part of the south of Eastern Siberia, including Zabaikalye and Yakutia, Kazakhstan, the republics of Central Asia and Caucasus, the central part of China, Mongolia, Turkey, Iran and India. In Yakutia the 27,7% of farmland territories consists of frozen salinized soils, mainly concentrated in the central part of Yakutia. Such problems as the distribution of natural salts in the soil profi...

The transit gas pipeline in Slovakia was built in 1970s. The gas pipeline runs from Ukraine through the southern part of the entire Slovak Republic to Czech Republic. The transit pipeline is made of 5 lines with diameter of 1,220 m and 1,420 m. Terrain obstacles such as rivers and water courses are mastered by 16 pipeline bridgings. Currently the lifespan of many structural parts is expiring. According to the long-term partnership EUSTREAM (pipeline administrator) and Department of Steel and Timber structures, Fac...

Nowadays the great attention is paid to the cultivation of different mammalian cells. They can be used, for example, for vaccines, monoclonal antibodies or viruses production, in regenerative medicine, diagnostics, for clinical trials and etc. The application of modelling and simulation tools for these purposes is very convenient and perspective in order to decrease the experiments and therefore the total cost for the investigations. In this article, the process cultivation of CHO cells is considered in hollow-fib...

The problem of upper atmosphere and lower ionosphere response to anthropogenic greenhouse gases global increase is considered on the basis of the Institute of Numerical Mathematics of the Russian Academy of Sciences coupled atmosphere-ionosphere general circulation model (for altitudes 0-90 km). This model is a high-level numerically complex three-dimensional atmospheric circulation model (AGCM) and a part of the INM RAS climate model (INMCM), which has been developed in INM for more than 40 years and has taken pa...

The article deals with the types of facility management approaches to the management and maintenance of utilities. It addresses the basic kinds of management and maintenance of these buildings in relation to the valid legal regulations of the Czech Republic, and it also discusses the need to solve these problems mainly because of the wear of buildings due to time, mechanical damage and weather conditions. Neglect of timely maintenance and repairs reduces the utility value of the building, which is contrary to the ...

This study presents the role and significance of the land consolidation procedure in Poland, one of the six largest EU countries in terms of the surface area, and in Bulgaria. The consolidation traditions in Poland date back to the beginning of the last century and have been evolving along with dynamic social and technological changes. Currently, rural areas in Poland account for over 90% of the countryпїЅs area; therefore, it has been necessary for land consolidations to be transformed, over decades, into a multi...

Compacting is an important technological operation when forming of earth fills and backfills, where appropriate earth stabilization and in the construction of highways and roads in the compaction of bituminous and other surfaces too. Compaction is technologies that occurs at the building during construction time. It should be optimally compress all of the individual layers of the respective construction works. The works must be carried out as precisely and as economically with the smallest number of crossings comp...

In paper the gas analyzers of new generation constructed on the basis of semiconductor sensors are considered. Application of the semiconductor gas-sensitive elements allows to solve the main objective of the modern gas analysis пїЅ detection of vapors and gases of the wide list with high stability, the necessary selectivity and sensitivity. The semiconductor sensors allow to find substances in air in a broad range: from trace concentration 10-6 - 10-5 mg/m3 to high 500 - 800 mg/m3, owing to their developed struct...

Engineering novel material structures has continually been pursued to further advance modern technologies. These advancements often rely on novel processing technologies. Although many processing parameters have been thoroughly examined in the field of composition coatings, the formation processes are an exception. In this work, we examine the unique microstructures of composite electrolytic coatings, obtaining from electrolytes-suspension which contains nano-size particles of SiO2 and carbon. Metallographic resea...

Increasing the efficiency of the mechanization of the brown coal layers extraction requires updating the equipment from the technical endowment of the brown coal pits. The EsRc 1400?30/7?630 excavating machine with impeller represents the main tool from the endowment of the brown coal pits in our country. The cup runs displacement operation of the rock, its performance being found with the highest rate in labor productivity growth and reduce specific costs. It is realised, in this paper, with the help of the CAD/C...

According to the national laws and legislation, the pyrotechnician is the person who has expertise and is authorized to handle and/or use in Romania fireworks of category F2, F3, F4, pyrotechnic articles of category T2 and/or other pyrotechnic articles of category P2. Taking into account the inherent character of the risk specific to the pyrotechnic articles as well as the complexity of carrying out operations with these types of products, it requires acquiring thorough technical and practical updated knowledge to...

Predictions of catastrophic seismic events are extremely important. Such predictions are based on the continuous monitoring of many varying values characterizing the tension in the earth's crust. One of these indicators is micro oscillations in the Earth's crust, committed under the influence of the lunar-solar tidal forces. Devices for the registration of these oscillations are extremely complex, based on laser interferometric techniques. These devices converts length increment into according increment the phase ...

This article deals with the modification of the nozzle and its entire assembly with a hot end, so that it was not necessary to use a tephlon insertion and it was possible to reach the maximum temperatures of the nozzle reaching 280пїЅC and above. With the gradual development of 3D printing technology FDM (fused deposition modeling), i.e. the fritting of the thermoplastic in the shape of the fibres and putting it into the layers, more demands are placed on the materials used. Materials with a greater temperature of...

Development of high strength concrete has been continuous over the years, its production becoming available at competitive prices to the construction industry, thus moving away from being a novelty product. Although high-strength concrete properties have been widely studied for nearly 100 years, currently available design standards for concrete structures contain stipulations based on research conducted on concrete with lower grades than those available today. The modulus of elasticity is a very important mechanic...

Sediments are usually regarded as the ultimate sink for heavy metals discharged into environment, and can be sensitive indicators for monitoring contaminants in aquatic environments. Therefore, the environmental problem of sediment pollution by heavy metals has received increasing attention in the last few decades in both developing and developed countries through the world. Environmental risk assessments, including sediment monitoring, are typical tools for supporting decision making in the regulatory context, an...

The paper presents a system monitoring operational safety of structures used in civil engineering. The system is based on the fibre Bragg grating (FBG) sensors or sensors using the optical time domain reflectometry (OTDR) technology. The essence of the solution is to introduce FBG sensors into the structure to make them act as its пїЅnervous systemпїЅ. The system may be implemented in existing civil engineering structures made of steel, concrete, reinforced concrete, as well as in shells and new structures at the ...

Modern prefabricated buildings, constructed according to the innovative Polytech technology are to be energy-saving and enable quick completion of the investment project. The new construction method uses load-bearing and, at the same time insulating, elements in the form of prefabricated panels made from the modified Polytech mortar. However, until today, the detailed data regarding the strength and deformability of important Polytech elements have not been verified. The new Polytech system has not been investigat...

The paper presents a system for monitoring of operational safety of ferromagnetic structures used in civil engineering, machine construction and power engineering. The system is based on sensors of the residual magnetic field (RMFM) distribution. A change in values of individual components of the residual magnetic field informs in advance about the appearance of areas with a raised level of stresses or stress concentration zones and identifies micro cracks. The paper presents numerous examples of identification of...

This study investigated the degree of heavy metal accumulation in fruits, leaf, shoots and associated potential health risks in agricultural areas of the Mitrovica city, northern Kosova. Total concentrations of lead (Pb), cadmium (Cd), nickel (Ni), arsenic (As), zinc (Zn), copper (Cu), chromium (Cr) and iron (Fe) were determined in soil and fruits, leaf, shoots apple tree with rootstock MM106. Samples collected from agricultural areas (near Mitrovica city), have been analyzed for heavy metals (Pb, Cd, Ni, As, Zn, ...

First part of the paper presents the monitoring project of Turdas tunnel with the detailing of the monitoring equipment. Building of Turdas tunnel was realized for ensuring the maximum speed of 160km/h for passenger trains. In order to build the tunnel was provided a provisional support and a final support, due to difficult field conditions, obtained from the geotechnical studies, because of the presence of the swelling soil. To achieve safe construction of the tunnel were mounted specific monitoring equipment in ...

For the bridges under rehabilitation, especially for cable stay and suspended structures, situations that can lead to the increase of strain in the structure may occur during construction works. Because of that, monitoring the way the bridges behave during works becomes necessary. Monitoring them during rehabilitation under traffic is essential, because alarms are triggered when accidental actions take place or when certain strain values are exceeded. The bridge on DN39 over the Danube пїЅ Black See channel in Agi...

Protected areas have been created to limit or remove the man and nature harmful intervention on the existing flora and fauna. The research work has been focused on a protected area from Dobrogea, where there is an acute need for intervention, in order to save the existing rare species of plants. A permanent monitoring of the evolution of these species and other floral species must be done permanently, to see the effect of invasive species on rare ones. Effective monitoring of the studied area has been carried out ...

In the paper underground monitoring measurement system for continuous measurement of load changes in instrumented rockbolts was presented. The use of anchor casings creates an effective method of protecting underground mine excavations in KGHM Polska Mied? S.A. mines. Foundation for technical assumptions of original monitoring method was trial measurement period carried out in two underground copper mines of KGHM Polska Mied? S.A. between 2005 and 2008. The main aim was to receive interaction between load variatio...

In old times, hydrotechnical constructions, mostly dams were built for the single purpose of water supply or irrigation. As civilizations developed, there was a greater need for water supply, irrigation, flood control, navigation, water quality, sediment control and energy. Demand for water is steadily increasing throughout the world. There is no life on earth without water, our most important resource apart from air and land. During the past three centuries, the amount of water withdrawn from freshwater resources...

This paper presents a case study regarding the GIS applications on the slopes with frequent erosion processes in depth. Monitoring the gullies consists in identifying them in the land, their positioning on the map, their classification and recording according to several indicators and following their evolution in time. The study is carried out in a water catchment area of 4,665 ha in Berheci Superior, Bacau county, Romania. By using ortophoplanes, satellite images or air-photograms (in some cases) and the document...

Conductive polymer composites due to their unique properties and potential in various applications including chemical and bio sensors are receiving much research attention in recent times. The study investigate the effect of increasing polymer concentration and the influence of mixing time on morphology and electrical conductivity were. A highly conducting nanofiller and reduced graphene oxide (RGO) was incorporated into the matrix of expanded polystyrene; a recycled polymer, and the solution was electrospun under...

Many sports facilities were constructed in the Sochi area prior to Winter Olympics, 2014. We contributed to this by conducting the research of geological risks on the northern slopes of Aibga Ridge пїЅ the place allocated for construction of mountain skiing tracks. Initial data of the study comprised digital topographic model, field findings, and remote sensing data. All these were organized by using the instruments of MapInfo Geographic Information System (GIS). The research was based on the system-morphological ...

Numerous space agencies and powers have announced their plans on lunar exploration for the next years. The main purposes are preparation and creation of long-term scientific, technological, experimental, and industrial bases on the near side of the Moon and in the areas of the lunar poles for conducting scientific experiments and investigating lunar bowels. The American space agency (NASA) has published the most detailed for today map of the lunar South Pole. The new data has been collected by the пїЅLunar Reconna...

In this paper we have developed a set of multi-parametric data analysis programs, which can be used in hydrogeological studies. Considering that in these studies we use large sets of multi-parametric data with spatial and temporal distribution we focused on the analysis with polynomial tendencies surfaces and hypersurfaces, analysis by moving average with different dimensions of windows and analysis of the variance of the correlation factor with mobile window. The first part of the paper is dedicated to the descri...

Heavy metal contamination of soils is a long-standing environmental problem in the world due to the increase of anthropogenic impact on landscapes. The proposed paper is the first step of an integrated ecological and geochemical investigation of soil cover of the Baikal region. Study object is the biggest island of the Lake Baikal named Olkhon, which is a part of the Baikal National Park, Russia. The study was performed by the key-site method. The method is based on the revealing an index plot, which characterizes...

This paper presents the research on the sedimentation process assisted with coagulation process. The main purpose of this project is to determine the method of coagulant dose selection during the sedimentation of the coal suspension. Measurements have been made for various sedimentation intensification techniques: the use of coagulant, the use of lamella, and the use of both techniques simultaneously. The efficiency of the sedimentation process was compared using various intensification techniques. The studies wer...