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The involved geological structure of the Bilina Mine complicates mining of overburden materials and it is necessary to make movement of the large mining machines in the risk zones safe, so that they are not endangered. A lot of risks is connected with mining and some of them can be categorized as so-called uninfluenced risks. Areas broken by tectonic processes or strongly inclined layers on overburden cuts are such hazards. Those in quarrying negatively affect mining in many aspects. Due to a landslide there is a ...

Food processing wastes are the end products of the food processing industries which cannot be recycled or used for other purposes. These are the non-product flows of raw materials whose economic values are less than the cost of collection and recovery for reuse; and therefore discard as a waste. These wastes pose increasing disposal and potential severe pollution problems and represent a loss of valuable biomass and nutrients. Onion solid wastes (OSW) were used as raw material to produce polyphenol and extracts wi...

Extreme floods as severe and unusual events are associated to wide range negative consequences such as: extreme floodplain flooding; crop, household, infrastructure and economy damages; social disturbance, etc. Their negative effects in most cases tend to disaster behavior, thus of especial interest is the problem with possible mitigation and prevention measures obtaining. Parts of them are Natural Water Retention Measures (NWRM) that successfully can complement available grey infrastructure. In help of experts in...

In the plain area of Timis County, compar()ed to other regions of Romania, the phenomena specific to the cold season of the year do not have a special intensity, because the submediterranean influences make the snow layer shorter, the thickness of the layer is shorter, the periods of frost have a shorter duration and the phenomenon of blizzard is present especially on the mountain ridges. In this paper we want to highlight the abundant episodes recorded in Banat in the last ten years and the deviations of the ther...

The Prague housing fund consists of houses built by heavy prefabrication system between the years 1950 and 1990. This method of construction was characterized by considerable heat losses which, in the context of current trends, appear to be unacceptable. Ageing houses are currently being renovated. The primary goal of the reconstruction is to reduce heat losses with minimal reconstruction costs. The aesthetic value of the facades and the exterior appearance of residential buildings are neglected. The article exami...

The problem of automatic geophysical facies classification from well logs has played a crucial role in the mining industry from the 1980s to the present day. During this period, many different approaches were proposed to cope with this task; they were based on the methods of machine learning and deep learning. This paper gives a systematic survey of modern effective solutions to the assigned problem. The comparison of the approaches to the solution which are described in the works of various researchers is present...

Since 2007, eco-innovation has been a focus in the European Union. The Entrepreneurship and Innovation Programme aimed to support eco-innovation initiatives among small and medium enterprises and enhance their competitiveness. In Latvia, a small number of enterprises are engaged in the field of environmental technologies and eco-innovation. The low awareness of the general public about green growth potential limits the demand for eco-innovative products and makes the ecoinnovation sector a weak business niche in L...

C:N ratio in after-harvest residues (including straw) decides on speed and intensity of decomposition. In one-year field small-plot experiment, there were included these variants: (1) monoculture of winter wheat fertilized with 140 kg N/ha; (2) monoculture of winter pea not fertilized with nitrogen; (3) mixed culture of both these crops in 1:1 ratio fertilized with 112 kg N/ha; (4) mixed culture of the crops in 1:1 ratio fertilized with 70 kg N/ha; (5) mixed culture of both crops in 1:1 ratio not fertilized with n...

The context of the accelerated fall in global cumulated oil reserves with an increase in annual oil consumption was the opportunity for the development and production of green cars. This paper aims to study the link between the sale of ecological vehicles and its impact on the pillars of sustainable development, respectively the social, environmental and economic pillar. This way we can identify a number of factors limiting the sale of ecological vehicles. Although these factors are analyzed in other countries of ...

Many differential equations of Dynamics (i.e. Celestial Mechanics, Molecular Dynam-ics, and so on) one can reduce to polynomial form, i.e. to system of differential equa-tions with polynomial (in unknowns) right-hand sides. It implies that at every step of numerical integration of these equations, one needs to evaluate many different multivar-iate monomials for many values of variables, and that is why minimizing the evaluation cost of a system of monomials in the right-hand sides is an important problem. In Aleso...

In this study, the depth-averaged flow equations for wind farm simulation on the complex terrain are presented. The equations are derived by integrating the original 3D flow equations over the height of the channel depth. This approach reduces the equations from 3D to 2D and reduces the elapsed time of CFD simulations from hours to minutes. Thus, it is very practicable modelling method in real time design work. 2D CFD simulations with depth-averaged equations are compared with full 3D models for the Lillgrund wind...

The current paper focuses on ways in which we can reduce pollution cause by thermosetting polymeric materials. The past years, the industry of polymeric materials has gone through a tremendous increase because of the many advantages they present. However, if these materials are not recyclable nor recycled, they can cause serious harm to our environment. Questions arise in the case of epoxy materials because currently we are not aware of any methods of recycling pieces made from epoxy or composite materials based o...

The paper presents some experimental study about fatigue properties modifications in Ni-Ti alloys on heating. The shape memory of alloys is used many times by heating and cooling and/or loading and unloading. The stability of material characteristics as transformation temperatures and mechanical behavior, during thermal or stress cycling is an important consideration in developing suitable alloys. Although shape memory alloys can be subjected to both thermal and stress cycling, it is necessary to investigate these...

One of the goals of our research was the evaluation of quantitative and qualitative properties of the Fe oxyhydroxides emerging from mine waters. Another one of the main goals of this research was the effectiveness comparison between natural and supported attenuation used as a remediation method for the removal of potentially toxic metals and metalloids from mining waters occurring on sites with sulfidic mineralization. Samples for this research were taken from abandoned mineral deposit of sulfide ores in the loca...

Theodossia Nalivkin is a Frasnian spiriferid brachiopod genus which is characterized by a small to medium sized shell, short hinge line, rounded cardinal angles, weakly developed sulcus and fold, uniformly costate surface, short dental plates. Views on the genesis and taxonomy of Theodossia have changed significantly over time. They are belong to the superfamily Theodossioidea which is considered to be descended from Adolfioidea by turning plicate shell to costate and weakening of sulcus and fold. The first appear...

The report provides comparative characteristics of filtration processes in the octahedral cell, as well as in the central and near-wall cells with cubic packaging of balls in the range of Reynolds numbers of up to 20,000. In an optically homogeneous system, where the packing of glass balls and the immersion liquid had the same refractive indices, the three components of the velocity vector of the filtration flow in the cells were measured using LDA. Characteristics of a turbulent boundary layer on the ball and vor...

The authors of the article consider the features of the composition of surface and groundwater in the industrial zone named Nizhnekamskfaya and its surroundings in 1979?2018. Industrial zone Nizhnekamskaya is one of the largest in Europe. It is located within the Tatarstan Republic and includes many large petrochemical and oil refineries. According to the analysis of hydrochemical data, the authors can claim that the composition of natural waters in the vicinity of the industrial zone has not changed significantly...

In the early 80-ies near the village of Shantobe, Akmola region, a heap leaching manufactory was built. Since 1985, the manufactory processes productive solutions, and the commercial product of the manufactory is a regenerate containing up to 40.0 g / l of uranium. This product is processed at the mining and smelting factory (SMCC) in the city of Stepnogorsk to produce U3O8 uranium oxide. The share of heap leaching accounts for 25.0% of uranium according to control No. 1. But, in connection with the difficulty of ...

In addition to general information about corundum, the work addressed questions about the material composition of corundum-containing ores in Karelia and the degree of their knowledge. Using the corundum as an example of the Khitostrov deposit, the interrelation of the strength characteristics with such factors as crystal morphology, fracturing, and the presence of mineral inclusions has been studied. The technologies of extraction and disintegration of corundum using mechanical, thermal and chemical methods of we...

The light hydrocarbons and water-soluble oil components overcome geological barriers - water-resistant horizons and gas-tight layers of the earth?s crust at the macroscale - and therefore natural waters of territories with oil and gas fields have a number of specific features. The purpose of the research was to investigate the features of organic impurities in groundwater and drinking water samples in the absence of accidental spills (pollution). Water samples were taken in oil and gas producing territories of Kha...

The fauna of blood-sucking midges of the Lower Volga region is represented by one taiga species (Simulium morsmulitans Edw.), three steppe and forest-steppe species (Titanopteryx maculata Mg., Schonbaueria matthiesseni End., Boophtora erythrocephala De Geer.), and the species Odagmia ornate Mg. has a polyzonal range and is widespread. Seasonal dynamics of attack of blood-sucking midges on humans and animals has two (rarely three) peaks of activity. The nature of the daily activity of blood-sucking midges refers to...

In the given work the new velocity model of the central part of the East European craton is presented. To achieve this goal six broadband seismic stations were installed along the profile about 500 km long. To recall the velocity structure, the receiver function technique has been used. For the inversion we used Levenberg - Marquardt algorithm for both P-to-S and S-to-P converted waves along with the travel times discrepancy of the transition zone 410-660 km. Preliminary processing of the velocity sections made it...

Approaching the issue of fertilizers with organic substances of the bio stimulants class is a difficult task as the concept is far from complete elucidation. As concerned the use in agriculture of these products, legislation, research, and experimental activities are still incipient. Any substance or microorganism applied to plants with the purpose to enhance nutrition efficiency, abiotic stress, and/or crops quality features regardless of their nutrient content can be generally defined as a product with bio stimu...

Geoelectrical contrasts generated between underground voids and the surrounding materials, their vertical or horizontal development, geometry and burial depth are key elements for voids detection when investigated by electrical resistivity method from the surface. Nevertheless, the acquisition techniques, the array type selection and profile(s) deployment are equally influencing the survey results. The relations between the mentioned factors were subject to detailed analysis by constructing various synthetic model...

The slag formation is a complex process consisting of several stages. There is the formation of liquid slag from individual batch materials. In the production of steel, the slag mode is chosen according to the type of apparatus, the type of processed pig iron and steel scrap, and the requirements for the grades of the steel produced. The paper focuses exclusively on primary slags from the steelmaking process in the oxygen converter. The amount of oxygen converter is about 120-150 kg per tonne of crude steel produc...

In recent years, the development of infrastructure in the Russian Federation has become relevant. This will increase the level of economic development of the country. However, infrastructure projects require significant investments and often have a long payback period. The state is not able to fully finance infrastructure projects at the expense of budget funds, which increases the relevance of the use of new sources of funds. The purpose of the study: to determine the potential for financing infrastructure projec...

The experimental research studied the possibility to develop an innovative coating type having a finishing and also a thermal isolating function, starting from three materials different as nature and presentation forms: kaolin powder ? a natural nanocompound, perlite granules ? a natural traditional thermal isolating material and an acrylic coating in aqueous dispersion with ceramic microspheres ? a modern synthetic thermal isolation nanoproduct. Three recipes of the new product type were made aiming to obtain hom...

This article deals with the fire safety test of polymer sleepers in the ballasted track. Although the occurrence of a fire in the track is unlikely, it may occur, for example as a consequence rolling stock fire or arson. In the past, old rolling stock assembly or track maintenance could lead to fire. For these reasons, products installed in track must be fire-safe. A new trend in the sleeper development is the utilization of polymer-based materials that suitably combine the beneficial properties of prestressed con...

Phreatalona protzi (Hartwig, 1900) is a rare species of Cladocera (Crustacea) known from Western Europe. However, hardly any ecological information about this species is available and it has not been included in lists of species found in North-East European Russia. Here we present first findings of Ph. protzi in lake sediments of a small tundra lake from the Pechora River delta, Nenets State Nature Reser, Russian Arctic. The bottom sediment samples from 11 tundra lakes were used for analysis of subfossil Cladocera...

At a global scale, climate change generates extreme events which are more and more dangerous for society. Extreme hydrological and geomorphological phenomena are one of the most common causes of human life loss and material damage as a result of the manifestation of natural hazards around human communities. Floods sometimes cause irreversible damage or completely destroy areas with cultural heritage sites. In Europe, floods are affecting annually a great number of cultural heritage sites or buildings, which lead t...

In the current social and economic context it is necessary to evaluate the directions of administrative-territorial development and socio-economic vulnerability in relation to natural hazards, as the frequency of catastrophic phenomena tends to grow. In order to minimize the loss of human lives and to reduce the economic impact, it is necessary to implement an adequate territorial planning in relation to the spatial distribution of natural disasters. Most settlements from the region of Moldova are located / develo...

The focus of this paper is on the using geoinformatics by representatives of local government and local authorities in crisis management to refine and optimize the planning of the evacuation process of the population at risk of flooding which is the most frequent reason for the crisis situations in the Czech Republic. The main tasks in planning area evacuations, as the primary protection of the population, are the estimation of the number of evacuation vehicles required for the vulnerable population and the planni...

Natural hazards as floods are a constant threat to urban areas and for the environment. The need of monitoring and mapping these types of inevitable phenomena has become mandatory cause of their negative impact on natural resources, different social and economic aspects. In L'Ile-Bouchard these phenomenon occurs frequently and people that are living in the flood prone areas of Vienne River are highly vulnerable to flood. The current study is an analysis of the flood hazard map and risk map of a river sector for Vi...

In Kazakhstan, more than 20 billion tons of industrial wastes from mining and processing enterprises have accumulated. These tailings are of interest as promising technogenic ore raw materials, significantly expanding the raw material base of the acting or the creation of a new processing industry. We have investigated the mineralogy and technological properties of tailings of the Balkhash enrichment factory, which are accumulated in large quantities. According to the results of studying the chemical composition o...

Froth flotation process has shown superiority in processing of many low-grade ores including iron ores. However, there is need to continue developing cheap, more selective and environmentally friendly reagents. Due to the shortage of high-grade iron ores, many companies in South Africa and other countries are currently working on the beneficiation of low-grade ores and retreatment of tailings. In this paper, the performance of Macadamia oil as a frother on the flotation of low-grade iron ore was investigated. The ...

The paper deals with fluctuations in water pressure and its influence on water losses in the network, depending on the time and height of the building. Water losses, depleted infrastructure life, and rising energy costs are just some of the issues that affect grid pressure. Excessive pressure increases the risk of piping rupture and water leakage in the distribution network and increases the cost of energy that needs to be spent on pumping and producing additional drinking water. Reducing the water pressure in the...

Microfracturing and rock deformation as effects of tectonic stress generates sounds called acoustic emission. Many reporting on the earthquakes say that first people hear a noise and then they feel the two shocks (P and S waves). How is this possible as long as the speed of sound is less than the P wave speed? This article gives an answer for these question. An earthquake is an effect of high tectonic stress in an area (hypocenter) and the last part of this process is the loss of elasticity of rocks followed by br...

At present, the water supply system in the town of Dudinka (Krasnoyarsk Region, Russia) is being upgraded. In its turn, design of industrial projects stipulates development of an environmental protection action list. This study is aimed at forecasting environmental changes in the course of construction and operation of the water supply system. Results of the previous engineering and environmental surveys were used as input data for the forecast. Technogenic impacts of the project on the atmosphere, surface and gro...

Formation of anthropogenous forest landscapes in the territory of North Azov Sea region can subdivide into 4 stages: The 1st stage ? (the Cenozoic ? the XIV century) ? formation of natural forest and forest-steppe landscapes of the region. The 2nd stage (the XIV-XVIII century) ? the beginning of large-scale data of forests the nomadic people (construction of dwellings, deforestation for the purpose of creation of pastures and a plowed land), occupying the territory of the region of research. The 3rd stage (the XVI...

Most cities in Romania, faced in the post-communist period with changes in the dynamics and functional structure of the city. The transformations after 1990, in terms of territorial planning, reconversion and economic policies, have led to important decisions regarding the industrial platforms. Industrial reconversion is a natural stage in urban evolution in most Eastern European countries with an unstable or very dynamic economy. The post-communist period is marked by the development of services and the regressio...

In the last decade, the rapid development of computers and sophisticated software in image capturing and processing brought on the development of automated object documentation methods. Documentation methods like 3D scanning or photogrammetric technology called image-based modelling and rendering (IBMR) or SfM (Structure from Motion) have become common methods and give us the possibility to create a real 3D model of objects. It is important in archaeology for findings documentation and visualization, and in cultur...

An important European transport sector is represented by the river ferries, which have a tremendous impact on the population and economy of the riparian countries. The navigation across the Danube River is increasing significantly in the past decade due to the limited number of bridges available in the Romanian part of the river. If the Romanian sector of the Danube would be analysed, the total fuel oil needed is between 0.92 to 1.96 million tons per year, which means a CO quantity of 23 to 49 tons per year, and o...

The overlapping of the Yenisey River by Dam of Krasnoyarsk hydroelectric power station noticeably altered abiotic conditions of habitats of river ichthyokoinos in the zone of an artificial pond - Krasnoyarsk reservoir. Its mode of operation for the past 50 years is defined in foremost tasks of hydropower and practically does not take into account the criteria of conservation of homeostasis of aquatic ecosystem and fisheries interests. Change of rheofeeling complex on limnofeeling in the process of forming reservoi...

This study aims to investigate the functionalization by pad-dry-cure method of 100% cotton fabrics with colloidal dispersions based on TiO2:N and SiO2 nanoparticles (NPs) in different molar ratios (1:0.5, 1:1, 1:1.5 and 1:2). For the preparation of colloidal dispersions the chitosan was used as stabilizing agent. Self-cleaning performance of the functionalized samples was qualitatively assessed based on Methylene Blue and Brilliant Green stain removal ability under UV radiation. Stain photodegradation efficiency w...

In this paper we present the results obtained regarding the functionalization of the surface of sheepskins using nanocomposites based on reduced graphene oxide - TiO2-Ag and reduced graphene oxide - TiO2-Cu in order to obtain leather with antimicrobial and photocatalytic properties. The nanocomposites were integrated in film forming polymer composites and were applied by spraying on sheepskin surfaces. Sheepskin surfaces were characterized using scanning electron microscopy (SEM), physico-mechanical methods, photo...

The research like this one is needed because we need to know what threats can lead to unwanted consequences as identity thefts, data misuse, a compromise, etc. The problem of saving personal data is severe. Since most people prefer storing their data in the clouds, the new problems accomplish it by various types of attacks on the authentication process itself. Attack by attack, they become more targeted. This is the easiest and fastest way to unauthorized take over other humans' files. The goal is determining the ...

In the oil extraction industry, large quantities of water are processed, which is extracted with the oil and gases from the deposits which is then used in the injection process. Water treatment is required because they contain various impurities that make them unsuitable for disposal in the environment. As these wastewater must be disposed of, the most appropriate way is to treat them and inject them into various underground layers. The most common use of wastewater is found in water injection processes to improve...

Photovoltaics (PV) is a key technology option for realizing a decarbonized power sector and sustainable energy supply and can be deployed in a modular way almost everywhere on this planet. Solar resources across the world are abundant and cannot be monopolised by one country. Regardless of how fast energy prices grow in the future, and the reasons behind these grow, PV and other renewable energies are the only ones offering the stabilization of, or even a reduction in future prices. Kazakhstan has significant rene...

Access time is the most influential factor in determining access of people to healthcare services, be them urgent medical services or related medical services. The analysis on access times to the current public health infrastructure highlights the uneven spatial distribution of the main public health infrastructures, and also reveals some areas with access restraints. In this case, work is needed to develop hospital infrastructure so as to eliminate territorial disparities in terms of access. We employed ArcGIS Ne...

The area of calcareous soils is about 1/3 of all agricultural land. The availability of iron for plants on them is decreased which leads to a decrease in yield due to chlorosis. Synthetic agents are used to eliminate iron deficiency, many of which are expensive and resistant to biodegradation. Lignosulfonates are a unique type of technical lignins which are formed during sulfite pulping. Lignosulfonates form complexes with various metals and the presence of sulfo groups gives them solubility in an aqueous medium a...