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Using of HCAC as a clearing material of hydrometallurgical production?s effluent. Hydrocarbonoaluminate of calcium is synthesized in the system CaO-Al2O3-Na2O-CO2. Such system is characteristic for high silicon content aluminum raw on alumina processing plants by sintering method as desilication reagent. By this method aluminates? solution decomposition conducts by carbonization receiving of aluminium hydrate and sodium liquor. HCAC has developed surface, neutral pH, which let us using it as clearing material for ...

In the Oxford-Kimmeridgian deposits stages of the territory of western Tatarstan, it was discovered a field of stratiform pyrite mineralization. In this field clays are enriched by pyrite nodules. X-ray fluorescent and electron microscopic analyzes during the study of pyrite nodules revealed an increased content of rare-earth phosphates elements (monazites) in them. Monazites are mainly represented by LaPO4, CePO4, (La,Ce)PO4, (Nd,La)PO4 and SmPO4. They form single xenomorphic grains and short-prism crystals. Thre...

The laser meter of super small rock displacement under the influence of gravitational forces from the moon and the sun allows registering the regular fluctuations in the Earth's crust. These fluctuations provide small difference in the distances between the rocks edges in the two orthogonal directions inside the shaft structure drilled in the rock. Laser-based displacement meter converts the distance change into the increment of the phase difference in the two light beams in the interferometer. The photo detector ...

The mineral deposits are important for the Russian Arctic. The resources of PGE minerals and gold, nickel and titanium are more than 10% of global significance. Meanwhile, the most arctic territory is out of availability for detail geological and geophysical prospecting due to severe climatic situation and difficult accessibility. The spatial relations of ore deposits and bearing formations of different geodynamic nature at Russia territory show that the geological sequences are of three basic types of geodynamic ...

There are numerous technological and material solution in the building sector. As more and more emphasis is laid on the protection of nature in the contemporary world, new pro-ecological solutions are devised all the time. One of the most recent trends in the technological development of civil engineering is green technology. In the construction industry, it primarily means solutions with an aim of attaining efficient management of energy and natural resources, from production of building materials, through design...

The present work is focusing on construction and analysis of 5 lunar models using space and ground observations. Firstly, it should be noted that the task of building a model of the lunar macro-figure relative to its center of mass and axes of inertia does not have a definitive solution yet. Within the present work the models of the lunar macro-figure are developed on the basis of space and ground observations. The methods of observation had implied binding of lunar objects to stars, i.e. celestial coordinate syst...

This work is aimed at investigating the carbonate collector micro-jointing using the results of the precision underground water level monitoring at the Mikhnevo Geophysical Observatory (?Mikhnevo? GPO). For a long period of hydrogeological observations from August 2013 to December 2016 a database of local mini-cones recorded in the observation well was formed. The leading factors that influence the process of the level recovery of mini-cones based on the systematization and generalization of selected mini-cones ar...

As a promising alternative to thermal steam treatment of oil-saturated reservoir technology to intensify the extraction of heavy oil catalytic aquathermolysis process can be identified. This paper presents the results of research of the active form oil soluble catalysts based on metals Co (II) and Fe (II), formed in the process of the laboratory simulation of catalytic aquathermolysis heavy crude oil, and its influence on the composition of the oil itself. Experimental data shows a decrease in viscosity catalytic ...

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...

Leaking oil, diesel, gasoline and other dangerous substances transported in large amount mostly on roads and railways affect the soil, rivers and underground fresh water. The fast reaction is necessary in order to stop leaking and to protect the surrounding environment. There are usually no special sorbents at the place of accident, therefore improvised sorbent should be used. Some of natural sorbents are surprisingly effective. Improvised sorbents were experimentally deeply tested in order to find out their chemi...

The demand on functional food products enriched with probiotics to get health benefits is recently high. On the other hand, the use of probiotics in animal nutrition has been shown to have significant economic and agricultural effect. Animal components are substituted by plant raw materials as a base for probiotic microorganisms fermentation nutrient media. Cereal raw materials and processed products are of interest. It is well known, that the costs of raw materials and its preprocessing influence on the costs of ...

In a large competitive environment in which today foundry exist are more important is production of castings with high quality and high economic efficiency. Therefore, the use of 3D software and simulation programs is necessary in the pre-production stages. In them it is possible to design, construct and simulate filling and solidification of castings in the foundry mould, design ingate system and feeder system. A properly designed and calculated ingate and feeder system is the first prerequisite for producing of ...

The purpose of this paper was to study the effect of carbon content on the dimensional characteristics of some powder metallurgy (PM) materials. The powders used in this study are atomized pure iron and prealloyed iron-based powders with Cu, Ni and Mo. Some elements as copper, nickel, molybdenum, manganese and phosphorus are the most common alloying element added in powders form because of its low cost, availability and capability to improve the properties of alloys. The particle size of the analyzed powders is ra...

Currently in many countries developments of simple 3D building models in cadastre are usually based on information concerning building outlines from a digital cadastral maps and on the number and the average height of floors registered in cadastre (so called ? ?3D Model General Floor?). If it is possible architectural projections of buildings and premises are used for development of such 3D models. In this variant so called ?3D Model By Floors? ? created model must be connected with the state coordinate system in ...

In this paper we describe the results of satellite monitoring of Mount Etna on Sicily from January to December 2015. According to data of The National Institute of Geophysics and Volcanology (Italy), INGV, there were three strong eruptions of Etna (31 January, 13 May and 03 December 2015). Satellite data of the retrieved concentration of sulphur dioxide was used for monitoring. The data was obtained from OMI instrument (Ozone Monitoring Instrument, AURA satellite) measurements in the ultraviolet band. According to...

The quasi-permanent seismic activity that characterizes our planet can be very well explained through the geodynamic pulsatory model for Earth. The cosmic cycles governing effectively Terra?s evolution can provide a current and pretty realistic image compatible with sustained seismic activity of the Earth. More exactly, the phases of these dynamic cycles are crucial because they correspond to a trend of planetary expansion or contraction for Terra. From this point of view there are especially important two cycles,...

Periodic thermal processes and periodic temperature fields are well represented in nature and technology. In nature, they occur largely due to periodic processes such as one year Earth's orbital motion, day and night cycle of the Earth's rotation around its own axis, etc. With conductive heat transfer mechanism daily temperature fluctuations almost damp in a layer thickness of about 1 m, annual temperatures do it in layer of 18 to 21 m thick. In the case where periodic heating by the Sun coincides with the mass tr...

The preserved complex of forest stands of the beech up to the spruce forest vegetation level mainly of primeval forest character within the National Nature Reserve Zadn? Po?ana has been a part of the core zone of the Biosphere Reserve Po?ana within the project ?Human and Biosphere? of the UNESCO organisation since 1990. Also these forest stands are being influenced to a great extent by abiotic and biotic harmful agents, which negatively affect their health and further development. Since the late 1990s, the Nationa...

Slag is one of the by-products of energy industry which is suitable for secondary industrial processing. Although slag has been successfully used in industrial production for several decades its use does not achieve the level of its potential. This work describes the improvement of mechanical properties of alkali activated binders ? geopolymers made of slag. The effect of mechanical activation on mechanical properties of geopolymers was examined. Mechanical activation was made with ball mill and different time of ...

Situated in the central part of the country, Chott El Jerid is the largest periodic lake in Tunisia. The depression is a flat plain lined with Holocene lacustrine sediments, which mostly developed in the form of alluvia and evaporites. Geochemical properties of sediments were tested using the following methods: FUS-ICP, TD-ICP, INAA, Cold Vapour FIMS. As concerns the basic composition, the following substances were identified (average levels): loss on ignition (LOI) ? 24.27%, SiO2 ? 21.46%, CaO ? 20.54%, Na2O ? 5....

The article observes the results of numerical simulation of the interaction of socketed shafts with rocks under the action of horizontal loads. The study revealed the following features of deformation and failure of the system "shaft? rock mass". Analysis of the obtained results confirmed the conclusion previously made by other researchers that the curve of deformation of the socketed shaft may be approximated by bi-linear dependence, in which the inflection point corresponds to the end of the linear section of th...

According to the existing Directive 2002/49/WE the task of identification and forecasting of noise pollution in the urban environment are carried through acoustic maps technology. The parameters designated in acoustic maps are limited to the quantitative size of evaluation of the environment exposed to the effects of noise sources, e.g. LAeq, LDEN, Lnight. The determined values of these parameters are fundamental to the decision ? making process in the terms of noise reduction. The results of undertaken researches...

The goal of the contribution is to present a comprehensive and complex possibility of modelling the runoff processes for a given part of Bratislava city. The complex approach consisted of mutual integration of results of partial mathematical models ? rainfall-runoff model, sewage system model, 1-D hydrodynamic modelling of open channel flow together with partially covered flows, 2-D hydrodynamic modelling of flooding the town residential area. All modelling works have been done in DTM coming from aerial photograph...

Oil spills are the main cause of pollution with crude oil. Contamination with crude oil affects the environment (soil underground and surfaces, groundwater and water surface, air quality), plants, and health of animals and humans. Soil pollution with crude oil implies contamination with Polychlorinated Biphenyls, Polycyclic Aromatic Hydrocarbons, Monocyclic Aromatic Hydrocarbons and different heavy metals. The contaminated soil investigated in the framework of the present work was collected from a bioremediation p...

Ostrava Lagoons belong among the most polluted areas in the Czech Republic. According to the available information, about 200 000 t of sludge from the industrial processing of crude oil during the whole 20th century were disposed there. The sludge contains high levels of organic pollutants (PAHs, PCBs, C10 - C40 hydrocarbons), including toxic metals of anthropogenic origin (As, Cd, Cu, Hg, Ni and Pb). A number of autochthonous microorganisms were isolated from the lagoon sludge. This study focuses on the biodivers...

Monosaccharides, as well as the other carbohydrates, are used for the production of different chemicals including polyols which are widely used in food, medical, pharmaceutical industries. A large number of catalysts can be applied for these purposes but the main problem of numerous catalysts is instability leading to a high-speed deactivation, active phase leaching and support destruction. So the development of highly active, mechanically and chemically stable catalysts is one of the main tasks for the researcher...

In the present scientific work assessed current status of question about grinding stage effect to electrochemistry parameters of operation preparation slurry before intermediate selective flotation. Showed needs of more detail study chemical reactions in the slurry preparation and flotation processes.At example of Abiz deposit ores has been offer new methodology. The ores are polymetallic sulphide type and the one are most difficult for mineral processing. The methodology allows increase information base during fl...

Geoinformation systems are widely used in many different areas of the humanities. Such systems allow to analyze, visualize historical geospatial information and what is more to support historical research processes in various situations. However an objective lack of the specialized GIS-analysis tools intended for historic, ethnographic and other research is tangible. Chronological tracking gives an example of the analysis tool aimed at solving a wide class of historic problems. The development of a geochronologica...

The work represents the data of the research of the chemical composition of epiphytic lichens Evernia mesomorpha (L.), growing around the tailings of a former gold-polymetallic deposit (Kemerovo region. Western Siberia, Russia). The lichen samples were collected from trees according to a radial net (20 samples in total). The concentrations of chemical elements in the dry lichen matter were determined by the mass spectrometry with inductively coupled plasma. The results obtained were compared with the concentration...

Proposed methods of thermodynamic description, modeling and calculation for different physico-chemical processes running in various natural and technological systems, represents each of them as a solution (solid, liquid, overcooled) of all its components, which it?s composed, - i.e. with provision of all potentially possible chemical transformations capable to take place in system. Development of the approach includes the correct account of heterogeneous equilibrium of type: the system ? gas environment (atmospher...

The theme of this project is the presentation of a model of drawing for civilian surface buildings, in order to start a series of major projects.The piece of land subjected to topographical measurements is situated in the western part of the extended urban area of Timisoara, Timis County. The beneficiary of this project is a multinational corporation situated in the city of Timisoara. As placement is concerned, the piece of land is situated in a rural area, close to the city.This work focuses on the study of topog...

In terms of development of agriculture, industry and tourism, in the spatial planning the level of exploration of mineral resources and environmental protection in rural areas is of great importance. The area of Vranje tertiary basin, located in the western part of the Serbian-Macedonian massif was selected. It spreads on both sides of the South Morava river, from Vladicin Han at the North, via Vranje and Ristovac to Bujanovac at the South. The total length of the basin is about 30 km and the width varies from 10 ...

Wis?ouj?cie Fortress is a historical defensive object located on the southwest coast of the Gulf of Gda?sk. Fort Carre, Eastern Sconce and Ravelin are parts of this postmediaeval fortification. In view of planned regeneration of this fortification complex, at the initiative of the Gda?sk History Museum and Institute of Archaeology and Ethnology of the University of Gda?sk it was decided to perform a documentation of one Fortress object. Authors decided to report the three-dimensional documentation to perform a ser...

The dominating feedstock for biodiesel production is still a vegetable oil and cost of the oil composes 80-85% of the production costs, therefore the development of the more efficient methods for biofuel production from vegetable oil remains crucial. The transesterification of oil proceeds with the production of side product: glycerol, which cannot be a part of the composition of fuel. Chemical interesterification of oil with alkyl acetate produce a mixture of fatty acid esters and triacetin. Triacetin is a fuel b...

Waste rock storage resulting from underground mining works or surface workings, the power plan ashes well as metallurgical and steel waste, is done in the form of dumps. Embankments as well slopes (which are inclined surfaces side that separates positive forms of relief), are characterized by the same geometrical elements, respectively, height and angle of embankment and their stability depends on the physic-chemical and mechanical properties of rocks that compose them. Cohesion and internal friction angle are the...

The purpose of the paper is evaluation of the influence of the additives of manufacture waste asphalt shingles (MWAS) on the properties of asphalt concrete mixture. Laboratory tests were performed on the asphalt concrete samples with additive of 1% and 2% WMAS. The scope of the study included the following tests: stiffness modulus at three temperatures (5°C, 15°C and 30°C), indirect tensile strength in dry and wet conditions, fatigue properties, resistance to permanent deformation and resistance to low temperature...

The possibility to use complexing reagents-collectors in floating different rare-earth and rare-metal ore has been studied. A prognostic assessment has been performed of efficiency of organic heteropolar compounds as flotation reagents-collectors on the basis of molecule?s energy parameters. The interaction has been considered of rare-earth and rare-metal minerals such as eudialite, zirconium, loparite and columbite with complexing reagents. Gain in energy (??) has been calculated by computer modeling at formation...

Currently heavily developed light oil resources are being depleted, and the energy consumption is increasing. In this context, the task of developing the tight oil reserves is relevant and will soon become an essential resource for stabilizing and increasing the oil production. The share of tight oil (including heavy crude oil) is steadily increasing in the overall balance. Oil production will therefore be at the expense of these oil revenues in the coming years. These hydrocarbon resources are referred to as non-...

The article presents the research results on geomechanical processes related to the change in the stress-strain state in the rock mass during large-scale mining operations in highly stressed rock massifs. A geomechanical model has been created that allows considering the sequential development of a complex of adjacent deposits at the Khibiny rock massif. Based on the modeling results, the optimal order and direction of development of mining operations under rockburst hazardous conditions are determined. At that, t...

Innovative materials, which can be applied to the glass and glass structures, allow us to improve their physical properties and thus directly affect the quality of the internal environment inside the glazed objects. For us it is examined innovative material is again glass - its form - elements that exhibit extreme reflective properties and allows a significant improvement in thermal and technical properties of glass constructions. We use simple mono-cellular hollow spherical elements, known as the "Glass Bubbles"....

A leading cause for offshore decommissioning is connected with assessment of increasing level of risk due to progressive structural damage and danger potential, in both structural and technological collapse, taking into account the environmental conditions and operational loads for which structure undergoes. The purpose of this paper is to express the vulnerability due to fatigue phenomenon of structural elements - studied on a model corresponding to self lifting Romanian offshore platform "Gloria" - as annual yie...

Simulation and testing technology of sintering flue gas recirculation, under Arcelor Mittal S.A.Galati proved its superiority compared to conventional sintering technology by: lower specific consumption of coke by approx. 10 to 15%; lower costs agglomeration; reduction of pollution due to: decrease of specific volume of exhaust gas to the basket by 45 - 50% ;decrease in the emission of SOx to basket approx. 55%; lowering NOx emissions from basket approx. 50%; CO2 emissions drop to approx basket. 20%; retention lay...

Urbanization is a global process most widely spread in the second half of the 20th century. In 2009, the urban population was equal to the size of the rural population and its importance is growing now. City conditions are so specific that at present some scientists note the excistance of processes that form a new adaptive type of man at the phenotypic level ? urban type in addition to already existing high-mountainous, arctic, temperate latitudes and tropical types. The main groups of factors that affect the stat...

In the present study it was evaluated the capacity of molasses for removing seven metals (Fe, Zn, Cu, Cd, Cr, Pb, and Ni) from three types of waste: galvanic sludge (pH = 7.1 ? 7.8), mineral residue from a lead metallurgical plant (pH = 5.0 ? 5.8) from Baia Mare (Romania), and tailing pond residue from Aurul - Baia Mare (pH = 2.1 ? 3.0). Several leaching tests were conducted in the laboratory in order to investigate the influence of molasses concentrations (0 %, 1%, 5%, 10%) on heavy metal leaching. It was observe...

The formations having accumulated during the Upper Burdigalian?Badenian sedimentary cycle following a tectogenetic (Eostiric) paroxysm pertain to the Lower Molasse of the Eastern Carpathians and feature significant lithofacies variations. The formations of this sedimentary cycle in the Sl?nic Prahova?Aluni? area (Prahova County, Romania) include Molasse-type deposits featuring well-individualised geological formations. Since the formations of this sedimentary cycle are the widest spread in the Sl?nic?Aluni? area a...

The paper deals with applying of the biogeographic model of climatic conditions of forest vegetation zones in the Czech Republic to forest management strategy under predicted climate changes. The biogeographic model which was developed at Palacky University Olomouc is based on climatological prediction data for the time period 2010 - 2100 according to Representative Concentration Pathways regional scenarios and geobiocoenological data related to forest vegetation zonation. As results presented, climatic conditions...

Substrate, organic matter content, land use and cover may strongly affect soil properties having effect on soil water regulation services in ecosystems. Soil water holding capacity is function of specific physical, chemical, and biological soil parameters. The aim of this research was to understand the risks posed to soils and their water-holding capacities, in the face of changes in land use, land management and vegetation cover. This study was conducted in 2015, at two study sites, Tajov (TA on Haplic Cambisol) ...

According to Polish law, the natural concentration of sulphur (II) compounds in groundwater higher than 1 mg/L can be a base to find them as a curative water. Sulphur (II) occurs in groundwater usually as hydrogen sulphur or bisulphide ion. Their concentrations and ratios can vary dependent on prevailing conditions. Very often water stays a long way from intake to the spas. What is more in health resorts curative waters could be mixed. These processes can influence on total concentration and forms of occurrence of...

Membrane processes used in wastewater treatment are categorized as the best techniques available at this time because it has advantages in terms of quality and costs. The membranes have different properties depending on the obtaining parameters. Their properties can be influenced throughout the membrane fabrication steps: when the polymer solution is prepared, when the polymer solution is applied in form of a thin film and also even after the thin film membrane is removed from the coagulation bath. Some important ...

1050 aluminum alloys are used in the conventional engineering applications where the increased corrosion resistance is required (e.g. automotive industries or construction, containers). Improving the corrosion resistance of 1050 aluminum alloy is an extensively studied topic. Different methods are applied to improve the corrosion resistance of 1050 aluminum alloy as: painting, waxing, zinc-chromate priming, thin layer of pure aluminum, coatings with a liquid protective solution, conversion coatings and also anodic...