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The paper presents the results obtained in the assessment of seismic action of blasting performed in four Romanian salt mines where small room ad square pillar method is applied. Function of the time taken to mine a level, of the size of the rooms in course of excavation, of the medium radius of the area with elastic deformations, and the results of the seismic measurements, the explosive charges possible to be blasted were established for each separate seam, providing in the same time seismic protection for the f...

Production of high-viscosity oil reserves is accompanied by digital modeling. Use of enhanced oil recovery methods involves the synthesis of optimal control of the injected agents? effects. The system for modeling of non-isothermal multiphase filtration processes currently under development is based on the use of the finite element method. This allows to detail the formation heterogeneities and processes taking place in the wells and in the near-well regions. The objective function includes minimization of water c...

The paper analyzes the existing methods and tools for removing oil or petroleum products from the water surface as a result of the oil and petroleum product pipeline rupture. The main groups of methods with indication of their main disadvantages are presented. On the basis of the data obtained, the main direction of the combination of oil spill response methods is established in order to reduce the time of measures and improve the quality of water treatment. A set of activities aimed at minimizing the occurrence a...

This study aimed to identify a rational treatment for soil and determine the efficiency of the use of chelated liquid microfertilizers on the yield of spring hard wheat crops in chernozemic soils of the Samara Region of Russia. The study was conducted as a two-factor field experiment using a recognized variety of spring hard wheat:?Bezenchukskaya stepnaya?. The soil of the experimental field was typical medium-deep heavy loamy chernozem. Data on some agrophysical properties of the soil, weed infestation of crops, ...

The article deals with the approach to solving the problem of optimization of the educational process using adaptive training complexes. During the analysis of the subject area it was found that there is no detailed and formalized model of the learning process with the use of training complexes. For this reason, it is also difficult to set and solve the problem of optimizing the learning process. Therefore, the authors propose the necessary mathematical support to formalize the learning process at the training com...

The aim of the work was to optimize the process of obtaining multicomponent protein compositions with high biological value and higher functional properties than the original vegetable protein products. Initially, studies were carried out to obtain a biocomposite composition of dry wheat gluten (DWG) - pea protein, DWG-potato protein, potato protein-oat protein. Composites are enriched with all three limiting amino acids: lysine, threonine, sulfur-containing amino acids. For each of the essential amino acids, amin...

The research task presented in the paper covers utilization of computer based method for performance optimization and penetration estimation of shaped charges. The code is used in computer simulations, depicting dynamic non-linear phenomena. This is a perfect tool describing such phenomena as: expansion of detonation products, propagation of shock wave, rapid strains. The LS-DYNA program is used in many scientific and industrial fields, both on an initial stages of product development and on its final stage. The c...

At national and world wide level, raw materials consumption is steadily increasing due to industrial development and population growth. In this context, production of basic raw materials, and in particular of fossil fuels, natural gas and coal, is constantly increasing. For underground coal mining are used a complex network of horizontal, vertical and inclined mine workings with the purpose of extraction, transportation and evacuation of coal. Associated with the system of mine workings, there is a ventilation net...

The Pechenga ore region spatially combines platinum-metal plutogenic, copper?nickel volcano?plutogenic, uranium-ore and gold-ore fluid-metasomatic systems, which are formed under different geotectonic regimes in the Karelian and Svecofennian (2.4?1.6 billion years) stages of development of the Baltic shield, as well as lead-zinc mineralization of the Paleozoic age. At the same time, the role of mantle sources and processes in the formation of ore mineralization decreased, and intra-crustal mineralization increased...

In 20-21 the Century the environment protection is a main question in Europe. One of the answer is organic farming. In organic farming the farmers and producers produce food without using chemicals and artificial fertilizer. Today the organic food? market is large enough to research its characteristic. The article researches EU organic farming situation and in a region of its characteristics. European countries? situation is analysed and the question is what did and what to do in the future for the consumers to be...

Selective cutting plots with the use of evenly-gradually local method for forest plantations it is proposed to apply where as part of the next assignment. After selective felling is dominated by linden. This tree species is very closely linked with valuable timber and at the same time preserves the nectar production of the trees. When using the proposed purpose of logging allows you to create a complex mixed forest of natural origin of Linden and surrounded by other honey plants due to their conservation. Thus, in...

Organization of the Access database of the Lojane As-Sb deposit Northern Macedonia represents the first attempt of this paper authors to synthesize geological exploration data of this ore bearing locality in one professional database available for the interested parties. Since we are relatively experienced in compiling similar databases for numerous deposits (Bucim, Borov Dol, Kadiica, Sasa etc.), we had a critical knowledge needed to to organize representative Access database for the Lojane deposit. The Lojane de...

From the aspect of new and undiscovered conventional ore deposits of metallic raw materials the territory of Europe becomes more and more exhausted. In that regard slowly but steadily, alternatives are looked for. Namely, professionals became very aware of the anthropogenically introduced tailing and smelting dams/dumps and metal concentrations contained within. The European trends are leaning toward that path to provide fresh metal raw material sources for the developing industry. In that direction, bearing in mi...

The article is devoted to the study of the legal framework of the Russian state, designed to ensure the sustainable development of the Arctic territories. According to the authors of this article, the desire to ensure the sustainable development of the Arctic zone was the basis for the adoption of a number of important strategic documents containing the requirements of environmental safety in the implementation of economic activities in the Russian Arctic. At the same time, the authors note the weaknesses in manag...

When identifying and assessing production reserves leading position occupied by the problem of rational load of the productive apparatus, because the fullest satisfaction of the demand made by increasing the production of finished products, to optimize load capacities of the enterprise while reducing production costs. In the context of the current unstable economic situation, enterprises need to adapt to the ever-changing conditions of the external environment and, first of all, to deal with competitors producing ...

Poultry meat and table eggs are known to be a popular food items all over the world. The nutritional value of poultry white meat is of great value over the red meat. It contains considerable amount of protein, minerals, vitamins, and fat. In order to ensure a good quality of poultry products, the flock should be a good health and free from infectious agents. Antibiotics were widely used to prevent diseases in poultry flocks. However, using antibiotics for long time may lead to microbes that are resistant to drugs....

In accordance with the hypothesis of cold homogeneous accretion, it is usually assumed that the Earth?s core and mantle resulted from the gravitational separation of iron and silicate particles in its interior. According to this scenario, the core and mantle temperatures should not differ significantly. Therefore, the reason for mantle convection is difficult to explain. Recent data on the rapid accretion of planets, on the existence of magmatic fractionation trends in mantle xenoliths and in rocks of the crystall...

In-situ combustion (ISC) is an enhanced oil recovery process where heat and flus gases (combustion gases) are generated by burning a portion of crude oil to reduce oil viscosity and pressurize the system in the reservoir. Overall, in this method, air is injected to the reservoir, after the ignition process (self-ignition or artificial ignition), a combustion front is formed and moves toward the producer well. Nowadays, using metal oxide catalysts is considered as a possible and feasible route to improve the oxidat...

Along the north-eastern and eastern margins of the Siberian platform extends the foreland zone of the Verkhoyansk fold-and-thrust belt (VFTB) to the west of which is the Priverkhoyansk foredeep. On the north, the platform is bounded by the Olenek folded zone with the Lena-Anabar basin located to its south. Various authors identified a number of deformational events in the Late Mesozoic tectonic history of the region, of which the nature, kinematics and relationships are as yet poorly studied. We carried out detail...

The paper is part of the analysis of the current issues on the challenges that should lead to a sustainable future based on the optimization of production processes and the reduction of waste, with a first contribution on a leading agricultural sector in Italy. In agriculture, there are very different experiences and practices, each of which has the potential to develop indicators to monitor report and communicate trends and progress towards the implementation of the circular economy. In this context, the document...

Morphogenesis of structural elements of secondary xylem is associated with the biosynthesis of a massive secondary cell wall consisting of three layers, differing in mass, composition and structural organization. Cellulosic microfibrils are basic structural elements fixing cell walls. The participation of cellulases in cellulose biosynthesis is shown. Overexpression of cellulases (EGase) increased cell expansion and elongation and resulted in an increase in plant growth and biomass production. However, the precise...

All wind turbines have their main components (the rotor, mechanical transmission, generator) housed in a nacelle, supported by a pillar (large-sized) or a prop (small or medium-sized). Such a prop can be a guyed, a free standing, or a hydraulic one. While the former types of props require a lifting device for turbine installation and maintenance, the third type is provided with its own hydraulic system, which performs these operations. The hydraulic prop, which may have a height of 12...30 m and support wind turbi...

Egypt is characterized by a hot desert climate. Most of the residential building occupants suffering from indoor environment because of the high indoor Temperature and the majority of buildings have poor design related to the climate. This paper investigates different passive design strategies to enhance energy efficient design and increase the performance of thermal comfort in a typical residential building in New Minia, Egypt. The approaches are conducted by computational IDA ICE 4.7.1 program to simulate differ...

This paper aims to provide an overview of the technologies of passive heating and cooling by using phase change materials, integrated in the interior elements of constructions, to ensure the energy efficiency and the reduction of carbon dioxide emissions from buildings, approaching in at the same time the new and existing buildings. Considering that ensuring the internal thermal comfort of the occupants requires high energy consumption, the use of phase change materials by creating a passive energy storage system ...

Pesticide use has shown the efficiency in protection of crops against pests, but also of some unwanted effects as persistence, biomagnification efficiency and impact on non-target organisms. Although their use become more conscientious and restricted in the last decades, they still could be found in different environmental compartments as water, especially due to their physicochemical properties and over use from past. The goal to increase water environment quality, opened the requirement to find optimal and eco-f...

Boggy deposits of the West Siberian Plain central are widespread covering min. 2/3 of the surface (excluding the floodplain) [1]. They are developed on all relief elements forming major wetlands, and their largest areas coincide with the I and II terraces raising above the floodplain of the Ob and its main feeders. Considering the Upper Pleistocene period, we will be concerned with MIS 3 deposits studied in the Kiryas section. In the beginning of MIS 2 (22-25 ths. years), the processes of deposition and peat accum...

The purpose of the study was the laboratory testing of the pendant seeder-spreader (production of China) as part of the universal unmanned aircraft system "OSA HEXA" based on UAV "OSA" (developer and producer was Bozon LLC, Moscow), in connection with which we solved the following tasks: 1) determination and assessment of performance indicators of the functioning of spreading device; 2) selection of the best modes of application of the test object; 3) selection of significant factors affecting the quality indicato...

Baltic Sea countries (Latvia, Estonia and Finland) are attracting more and more Japanese tourists during previous years. There are several reasons for this tendency ? the Baltic Sea region is safer in compared to Central and Western Europe and offers broad tourism opportunities. High potential exists in the Japanese tourism market in terms of rural tourism in Latvia, Estonia and Finland - in 2018 the number of Japanese overseas traveling reached 19 million, showing increase by 6% over 2017. The traveling patterns ...

At the present stage of greening of the old productive units, the demolition process using blasting works have an increasing application due to the reduced time consumption, labor and expenses. A large number of demolition works by using explosives and characterized by a high degree of difficulty, have shown that the use of the blasting technique is a proper alternative from the point of view of efficiency, quality and security. Each construction creates a special case, the calculation of the blasting parameters a...

Over the past few years, Russia has adopted some fundamental strategic documents to ensure the development of the Arctic zone of the Russian Federation (the Russian Arctic). The documents put forward the tasks of using the Russian Arctic as a strategic resource base for the socio-economic development of the country, with the importance of preserving the Arctic as a zone of peace and cooperation as well as saving local unique ecosystems. At the same time, the priority task of developing the Russian Arctic and ensur...

The significant impact of the mining industry on the environment is associated with the storage of ore processing wastes characterized by a low potential for self-overgrowing due to wind and water erosion, lack of structure and low moisture capacity of fine-dispersed waste substances. In order to conserve the stored ore processing waste and reduce their negative environmental impact, the Mining Institute has developed a technology that ensures the formation of sustainable grass sod without applying a topsoil layer...

Peat belongs to renewable energy sources; therefore, research into the state of reserves, use and development of peat extraction and processing technology is of great relevance, especially in areas with harsh climatic conditions. On the other hand, other sources of energy, such as coal and hydrocarbons, are exhausted and depletable. Against this background, the development of innovative technologies for peat extraction in harsh natural and climatic conditions is of great interest and prospects. One of such regions...

In 2018, the Cassini spacecraft discovered macromolecular (above 200 atomic mass units) petroleum-like organic compounds from the depths of Enceladus, a moon of Saturn. This breakthroug requires revision of the traditional geochemical correlations "composition-oil origin" according to the biogenic theory. We studied the hydrocarbon composition variations in oil samples and their change over time in the consistency of recovered oil during well exploitation on the territory of the Khanty-Mansiysk Autonomous Okrug (W...

The paper deals with petrology of granitoids from the Istekh ore field in northeast Yakutia accompanied by complex Au-Ag-Sn-W mineralization. Magmatism of the ore field is represented by the Istekh granitoid massif, a series of granite and rhyolite porphyry dikes, and rare dikes of diorite porphyry and trachydolerite. A polygenetic nature of the massif is documented, with origination of parental melts of the amphibole-biotite granodiorites and granites from the lower and upper crustal protoliths, respectively, und...

During High Carbon Ferromanganese production as well as other reduction processes, the chemical composition of the feed plays a crucial role on the quality of the products. It is believed that the reduction from high manganese oxides to their lower oxides during HCFeMn production, the transitional phases that form in the prereduction zone and reduction zone are very influential on the coke-bed zone behavior. Data on acidic manganese ores use are available. However, on the basic manganese ores especially the South ...

In this study we performed a comparative analysis of the flavonoid compounds found in the composition of some species belonging to the Cucurbitaceae family, namely: cucumber (Cucumis sativus), bitter melor (Momordica charantia), zucchini or courgette (Cucurbita pepo) and horned melon (Cucumis metuliferus). The flavonoids in these species were identified by high performance liquid chromatography. The Cucumis metuliferus plant extract had the highest content in phenolic compounds (14.424 mg/L), while the Cucumis sat...

One of the most important alternatives in sewage sludge ash management is the recovery of essential elements such as phosphorus. Phosphorus is an important element for plants, food supply, human health and industry. Phosphorus is a non-regenerative resource and therefore it is important to find alternative sources to recover phosphorus. Phosphorus recovery as struvite (NH4MgPO4.6H2O) from sewage sludge ash has attracted special attention in the last decade due to the potential to be used as an ecologic fertilizer....

Currently, there is still a current trend to preserve the historical heritage of the Slovak Republic for future generations. Preservation of monuments is currently carried out by the Monuments Board of the Slovak Republic, whose central body is the Ministry of Culture. It is often necessary to create documentation that is suitable for presentation and technical purposes. The main aim of the paper is to create a 3D model of the church in the village of Kosicke Olsany. From the measurements was obtained the coordina...

The aim of this project was to create a detailed 3D model of Permian clay laminations. Modern image processing methods and wavelet analysis were used for 3D visualization, identification of the nature of laminations and calculation of mean and interval sedimentation rates. The images used in this project are the photographs of a clay sample taken from an outcrop of ?linguloid? clays. First, two faces of the sample were sanded and polished to the shine. Then the polished surfaces were scanned and photographed. Imag...

Increasing demands on steel quality, production and casting performance promote continuous innovation efforts in the steel industry. For example, mathematical and physical modelling of continuous casting of steel including the steel flow in a tundish is now a vital part of the overall optimization process. Within this framework, the SimConT laboratory was built as a joint effort of the ZP Research and Development Centre (ZP VVC) in Podbrezova and the Faculty of Materials, Metallurgy and Recycling of the Technical ...

The aim of this study is monitoring of quality of drinking water in Tirana city for physical and chemicals properties according the International standards that applied in Albania. In some case water don?t fulfill the permeable levels for drinking due to high levels of ammonium or nitrates. This situation may cause many human health problems. Samples were collect from tap and private wells water. The total of 90 analyzed samples during May to September 2018. All samples are collected in accordance with chemical ru...

Consumption of muffins has become very popular around the world. Various ingredients have been used to obtain these muffins and different recipes can be found in the literature. In this study three different samples (S) of muffins (S1- with wheat flour, S2 ? with wheat flour: almond flour (1:1) and S3 ? with almond flour) were prepared and investigated. Muffins also contain, besides flour: eggs, coconut oil, sugar, nuts, cherries and orange juice in the same proportions for all samples. The composition is dosed in...

The phytoremediation represents an environmentally friendly alternative to chemical decontamination of sites degraded by various anthropogenic activities. The dendroremediation abilities of some tree species can be combined with the production of the woody biomass for energy purposes. The aim of the paper was to determine the phytoextraction efficiency of total arsenic (As) by two varieties of short rotation coppice willows. The research was conducted in a pot experiment. Dormant cuttings of the varieties were pla...

Pile-soil kinematic interaction arises because of the soil deformations induced by seismic actions. These deformations interact with the pile foundation and can cause severe bending moments that may exceed the flexural capacity of the pile section. The highest bending moments occur at the interface of two adjacent soil layers having a high stiffness contrast and at the pile-head in the case of fixed-head pile. Most of seismic codes recommend assessing the kinematic bending in high seismicity areas for important (i...

To analyze the influence of geomorphological conditions on the accident rate of the main pipelines, we used the database from the National Pipeline Mapping System of the USA. This database is sufficiently broad and deep, and the natural conditions of the northern states of the USA - Alaska, Washington, Oregon, Idaho, Montana, North Dakota and Minnesota - can be considered as relatively similar to those for pipelines on the Russian territory. We carried out the analysis of geomorphological factors of risks and used...

The influence of ?-ferrite amount ferrite in AISI 321 steel on its general corrosion, critical pitting temperature and potential in simulated circulating waters. The samples were made in the form of rectangular 3x3x1 mm parallelepipeds by cold mechanical method. Surface of the samples was subjected to electro-polishing. The amount of ferrite phase was determined by empirical formula. It was established, that after electromagnetic saturation of the samples, ?-ferrite content in five heats of AISI 321 steel was calc...

Owing to the increasing influence of humans, many species have invaded and continue to invade new regions at an unprecedented rate, exerting strong impacts on ecosystems and human welfare. Invasive species are a major threat to community composition and ecosystem processes worldwide and a major aim in ecology is their identification of invasiveness and their direct and indirect impact on biodiversity of ecosystems. Recent studies on invasive species have revealed a wide variety of their impact on soil systems, nat...

The discharge with a liquid cathode between the electrode and the surface of the liquid is a promising object of study, both in terms of the applicability of such discharges in plasma-chemical technologies, and in terms of green synthesis and lack of knowledge of mechanisms of plasma-chemical interactions with the organic substances. The characteristic of plasma was measured with the methods of emission spectroscopy. Electrical parameters of the discharge were also measured. The plasma-chemical synthesis carried o...

The settlement system in the regions of Russia is changing due to the influence of neoliberal urbanization processes and of the economic, social and institutional areas of society. Changes lead to structural shifts in settlement and to the arising of polarization. The main goals of this study were to analyse the results of changes in the settlement system of the Belgorod Region, to identify the causes of polarization, to assess the types of suburbanization and the development of gentrification processes in large c...

The most urgent and current problem facing humanity, at the moment is the deterioration of the environment, which generates a permanent diminution of the health and life of mankind. As has been seen since the earliest forms of life, mankind has fought continuously for competitiveness, profitability, well-being and progress, through all its actions and inactions, which ultimately did nothing but generate major damage to environmental factors: the atmosphere, water and soil, ultimately creating significant degradati...