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This article discusses a comprehensive study of the sand samples, which were selected on the Arabian seashores (Kovalam, Kollam, Kerala, India), and produced ilmenite, zircon, garnet and monazite concentrates (Chavara field, Kerala, India). As a result of versatile research, realized in the laboratories of KFU, which represented mineral and radionuclide composition of the studied samples, marginally represented La, Yb, Hf. Discovered free of impurities zircon, as well as zircon of the hafnium species. The studies ...

In this study, the Springbok coalfields coal samples were collected and subjected to different temperatures ranging between 700-900 пїЅC under nitrogen atmosphere in order to investigate the effect of combustion on the mineral changes. The proximate analysis, calorific value of both raw samples and combusted were carried out. Characterisation and mineralogy of samples (1426, 1427, 1428 and 1429) carried out by X-ray diffraction, X-ray fluorescence, FTIR and SEM incorporated with EDS. Calorific value (CV) ranging f...

Bitumen deposits in Permian sediments in the Volga-Ural region are interesting as sources of unconventional oil. The reservoir rocks in the bituminous deposits are sand and sandstone of varying degrees of strength. For the prognosis of productive areas, it is important to study the peculiarities of the composition of bitumen-containing rocks and the mechanisms of localization of oil matter in them. These processes are closely related to the conditions of formation of the surrounding rocks. We examined samples of b...

The main goal of our paper was to determine the consequences of selenium intake (0.2 ppm as selenium selenite) on mineral profile of some broiler chicken (Ross) tissues/organs. Scarcity of studies on reference ranges for various minerals in different tissues was the secondary reason of our study. Our results highlighted significant variations on minerals content from studied samples: blood пїЅ Cu, Mn, Fe; faeces пїЅ Cu, Mn, Fe, Mg; muscular stomach пїЅ Fe, Zn, Ca; liver пїЅ Fe, Mg, Ca, Na; kidney пїЅ Cu, Mg, Ca, N...

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...

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...

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...

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 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...

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 ...

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 ...

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...

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, ...

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...

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 ...

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...

There are summarized findings from research-and-development (R&D) study of environmental communication (EC) development in Liepaja town municipality, based on case studies research methodics following applications during 2006пїЅ2015, and, summarizing, all stakeholders semi-structured interviews conducted in 2016. Liepaja is one of the most active pro-environmentally oriented municipalities in Latvia, where the complete collaboration communication model approach of all four EC complementary instruments has been int...

The development of modern technology affects all spheres of life. The use of such advanced technologies in urban management of individual processes and services is a concept of smart cities. The use of these innovative means leads to the efficient functioning of cities, reduce costs and often improve the quality of life of residents. Smart cities are a concept aimed at introducing information and communication technologies and tools for the effective management of sites and integrating citizens into his work. Smar...

The recent demands regarding energy efficiency of buildings across the European Union, namely the nZEB concept, impose among other improvements, the thermal behavior optimization of building components that define the building envelope. In order to achieve the imposed nZEB criteria, conventional thermal insulations with increased thickness have to be used, which is inconvenient in several cases. The paper presents an alternative solution, given by Nano insulation materials, such as aerogel and vacuum insulation pa...

Nanostructured black silicon wafers were obtained in a two-stage process of selective chemical etching initiated by metal nanoclusters. The obtained silicon wafer surfaces demonstrate the reflectance of 2-3% in the visible range. Surface-enhanced Raman scattering (SERS) effect was observed on silicon substrates coated with silver or cooper nanoclusters. Test substance of Rhodamine can be detected up to concentration of ~10- 12 ? by using nanostructured silicon substrates covered with silver nanoparticles. Dependen...

In the placers of the south-eastern boundary of the Lyapin megaanticlinorium at the Subpolar Urals for the first time the relation of native gold with bismuth and telluride minerals was reliably established. The placer area is located within the Lower Proterozoic and Riphean metamorphic rocks. Directly in the placers Bi-tellurosulphides, tellurides and sulphosalts (tetradimite, joseite-B, joseite-A, tsumoite, hedleyite, cosalite), native bismuth, native silver, maldonite are determined together with gold in large ...

Proper estimation of geomechanical parameters of the shale gas reservoir has a crucial influence on the stimulation treatments designing and therefore on hydrocarbon production from unconventional reservoir. The brittleness is the most commonly used parameter for locating the geomechanical hotspots in the reservoir. This parameter can be estimated using elastic, dynamic rock properties such as Poisson Ratio and Young Modulus obtained from sonic logs. The seismic waves velocities recorded by the sonic logging tool ...

It is well known that the Russian North is rich in hydrocarbon resources, and oil production there requires long transporting pipelines. We studied geological and other natural risks associated with the project of construction of oil pipeline from South Bagan field, Komi Republic. To evaluate the risks we put into geographic information system (GIS) topographic maps as well as drilling data, remote sensing and own field survey materials. It is the system-morphological approach by A. Lastochkin that was used as a m...

The paper presents three natural reserves in Romania: Dumbrava Vad nature reserve known as the Daffodil Meadow - Brasov County, is considered the largest reserve of this kind in Europe. Daffodil Meadow Negrileasa пїЅ Alba Country and Daffodil Meadow Negra?i - Arges County. For accomplishing the objectives of this paper were been created maps using Program ArcMap 10.1. The maps play a role to present the characteristics of the area in terms of geomorphology. The aim maps is to present this natural reserves in terms...

Risk assessment includes quantitative estimation of damage to a linear engineering structure by exogenous geological processes. Remote sensing data processing using the mathematical morphology of landscape seems to be a promising approach of exogenous hazard risk assessment for linear structures, this issue is examined taking thermokarst plains as an example. The mathematical models of landscape morphological patterns for thermokarst lacustrine plains and thermokarst plains with fluvial erosion is a base of the su...

The present study aims an integrated risk analysis of existing or potential natural constituting a direct or indirect threat on the analyzed geographical area. These regularly processes cause lately extreme and significant disturbances in the primary and significant damage system components in various fields of economic and social life. With an inventory of all these dangerous phenomena may be proposed at local government levels, a series of joint measures on mitigation and combating the effects induced by natural...

One of the main objectives in real-time assessment of seismic hazard is the development of algorithms for rapid estimation of the seismic source parameters (fault planes solutions). The objective of this work is to test and implement new methodologies in the National Institute for Earth Physics (NIEP) for near real time estimation of fault planes solutions taking the advantage of the spatial density of the Seismic Network in seismically active zones ( 120 seismic stations used in real time) and the full range of t...

Network methods were used for the first time to plan and control maintenance works on a chemical apparatus installation in the United States in 1956. These were simple methods improving project management. The development of the network structures would not have been possible without the technological progress which has been taking place over the last half a century. Complicated networks can be programmed during a short period of time thanks to high computing power. Network models can be currently used for the sim...

An ecosystem cannot be fully and effectively described simply by simple mathematical rules. Sustainability is difficult to define or measure because it is inherently vague and complex. This paper presents a neuro-fuzzy model, which uses data from different parameters to monitor and assess a certain ecosystem. If classic mathematical methods cannot provide solutions of uncertain data and treating vague situations, a possible solution to represent these conditions may be the use of neuro-fuzzy approach. Therefore, a...