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Defining the stability of a structure depends on several factors. It is difficult to predict them and take into account in the design phase. Over time, many of them will cause changes in the location of its components. Measurements are required to be taken during the operation of a structure in order to find out about any changes in its geometry. This paper contains an elaboration of the results of measurements of the geometry of a steel drum which is a major component of the historical roller gate dam - Czersko P...

The article deals with the examination of the state of the ball track at the heavy machine ZP6600/Z79. It gives results of material exams which were taken on given samples and it describes the progress and results of the numeric counting for the state of tenseness. The used method works with the ending parts at the bottom of part of the ball track when it touches the ball. The decision about the renovation of the track depended on the determination of the groove size degradation at the ball track. The material tes...

The potential for biodegradation of chemically different dyes of six fungi and bacteria isolated from organic pollutants- and synthetic polymer-contaminated sites was determined. Standard enrichment isolation methods using low-nutrient-concentration media were used to obtain bacterial and fungal organisms from environmental samples. The isolates were taxonomically characterized using molecular analysis and Biolog identification system. The isolates included bacterial strains of Pseudomonas putida, Pseudomonas viri...

This paper studies one of the biggest problems facing older buildings or historic monuments like ascendant humidity that occurs upward because water migrates into the walls from different sources from the soil found in foundation. The experimental researches have been made in the basement of the Faculty of Mechanical Engineering from Craiova, which is a heritage building that was badly affected by the earthquake from 1977. The subsequent rehabilitation was unable to repair the damage of the building's foundation. ...

One of the main factors determining economic and social development of particular countries is availability of cheap energy source. In a case of European countries, this availability has also important influence on the integration process. Amount of produced energy in given country tells about the level of its civilizing development. Also so-called energy independence that most countries are aimed and which guarantees political independence is strictly related to this problem. It can be assumed, that energy is one...

The basic tasks of building and production sphere, housing and communal services are connected with life protection and comfortable conditions creations for people. In this way the automated control systems of distributed energy supply and life support facilities play an important part. The main scientific direction in this area is increasing their energy efficiency. Paper represents results of implementation of automated dispatch control systems of distributed energy supply and life support facilities that includ...

We offer two approaches for construction of block lithosphere models. First is for selection of blocks in mantle only, it is applicable to both two- and three-dimensial models. Second method (3D) helps to select blocks related to known tectonic structures. Usual approach for tectonic maps construction is the gravity field analysis. However, this method is significantly limited because the gravity field includes integral information about density features in lithosphere. This makes impossible to split selected tect...

This article is dedicated to issues of commissioning of a small pumped storage hydropower plant in mine. Pumped storage hydropower plants are one of several ways to solve the problem of non-constant power consumption from the mains. This hydropower plant, we are going to deal with in this article, is located at Jeremenko mine in Ostrava, 580 meters below the surface of the earth. The entire facility is composed of Pelton turbine, Bibi's coupling and a generator of electrical energy. There will be described the iss...

Concrete structures exposed to water pressure, such as underground basements, water retaining structures and tunnels, have to be designed as watertight in order to prevent damage due to moisture or water ingress. The design and execution of watertight concrete structures is regulated by guidelines, nevertheless, after execution they may suffer from various failures. The most frequent failure is leakage of ground water through cracks. Major steps in the design process of watertight concrete structures are summarize...

The subject of thin seams exploitation is complex problem, and in reality it encounters several problems such as technical, ergonomic, and economic barriers. They refer mainly to combined longwalls where human presence is required at the site, and the most important problem is the issue of limited workspace in the longwall roadways. It generates engineering and organizational problems, especially during the launch and removal of the longwall roadways. Having considered the abovementioned, the Department of Mining,...

Development of energy, nuclear, engineering, petrochemical and chemical industry requires very massive and large workpieces. Requirements for machining workpieces of these department is the necessary adapt to the design and construction of machine tools. Analyses were conducted to carry out the overhaul and modernization for heavy cutting machine SKODA W 200 HC with digital subtraction, turntable S 100 C from 0 to 360пїЅ, while the carrying capacity of the turntable 100 t. The complexity of the repairs consisted o...

Currently, worldwide companies engaged in mineral processing are more and more interested in ecological transportation systems that do not effect and pollute the environment during their operation. One important element of such transportation systems is feeding station, which ensures the correct implementation of continuous transportation system. Proper functioning also increases the efficiency and reliability in transporting raw materials. The article deals with own 3D engineering design of the feeding and fillin...

The mining companies are often faced with the requirement for bulky material transfer which is possible to realize using overhead travelling cranes. An overhead travelling crane has rectangular work space, which is characteristic for this type of crane. A part of an overhead travelling crane is also a crane crab. Crane crab movement is carried out after the double-girder crane construction and loads are displacing along the whole length of the crane. The aim of this paper is a proposal of 3D geometric model of the...

In past decades design of experiments and simulation analysis have been recognised as powerful tools for resource efficiency improvement in various areas of technics and technology, especially for energy-consuming industries such as ceramics production. Silicon carbide ceramics is widely used for structural applications, yet production of such materials invokes high temperatures and sintering aids, thus it becomes an important task to carefully adjust ceramics compositions and methods of manufacturing. Promising s...

During the last decades, problems related to environmental pollution have become even more acute. Therefore there is a need for new sources of a clean energy. Steam reforming of alcohols, which are much morechemically active, proceeds at considerable lower temperatures. It is important also that alcohols produced from biomass (bio alcohols) can be considered as a renewable raw material. The aim of this work were the development of catalysts based on the complex oxides (ZrO2 - Al2O3 - CeO2) support and the study of...

The article deals with the design of new technology for the treatment of thin-walled house for carrier pipe conveyor drive roller. Production on conventional machine tool is unsatisfactory because of the failure of the machine tool and the actual production inaccuracies. Conventional machine tools are being replaced by numerically controlled machines CNC OS which allow reuse through production and higher labor productivity. They were designed and compared the new CNC axes of different structures, appropriate tools...

The introduction of energy dissipating devices as passive dampers in structural systems under earthquake excitation is intended to reduce structural deformation and in certain cases to reduce the risk of damage to equipment attached to the structural system. In seismic design, the input energy of an earthquake is typically dissipated through hysteretic behaviour of structural members, which allows the structure to undergo inelastic deformations without compromising the stability of the structure. The energy dissip...

The authors of this paper developed a concept that can be used for automatically car parking; the concept is based on finding the obstacle free spaces around the vehicle and it uses methods to guiding the car in an available found parking place. The car sensing system includes ultrasonic sensors to measure distances, proximity sensors to detect obstacles and a rotative position sensor to measure the vehicle displacements. A microcontroller based central processing unit (CPU) was used to process sensorsпїЅ informat...

In this study, we present series of GPR experiments to identify and solve problems, which might be encountered while carrying out GPR survey in sandy soils for various purposes. Study was carried out in the Smeceres sils sand-gravel quarry, which is located in the Madona-Trepe ice-marginal ridge in Eastern Latvia. This specific quarry was selected as a study site, because it has a boulder pavement located in its uppermost part. Two similar experiments were carried out in dry (after long period of dry weather condi...

Steganography can be used for illegal activities. It is very important to be prepared. To detect steganography images we have counter-technique known as steganalysis. There are different types of steganalysis, depending on if the original artifact (cover) is known or not. In terms of practical use, most important are methods of пїЅblind steganalysisпїЅ, that can be applied to image files and because we do not have the original cover for comparison. This article deals with the application of neural networks on the ...

Passage form the idea to market is a long journey, which if it is appropriately planned, may bring satisfaction and success. On the other hand, implementation new technology on the market give a risk of grave errors committing at the stage of planning. The procedure of transfer may end with fiasco, even though the concepts were really innovative and interesting. In this paper determinants of geothermal water deironing technology commercialization has been presented. The developed technology has been not breakthrou...

The GNSS satellite technology is most commonly applied in the area of air, sea or land navigation. In case of land navigation, the GNSS satellite technology guarantees a designation of a real position of a vehicle in a kinematic mode. The aim of this paper is to present and describe the possibility of using the GNSS satellite technique for the recovery of the trajectory of a motor vehicle. The research experiment was conducted on the example of a Pathfinder Nissan car. In addition, on the rooftop of the Pathfinder...

The dispersion is one of the most important pollution transport phenomena, which is used in numerical water quality models. The dispersion rate is described by the value of the dispersion coefficient in the advection пїЅ dispersion equation. The most reliable way of determining the value of the dispersion coefficient is the field tracer experiment. The results of the field experiments are affected by various influences, which occur in the real flow conditions - one of them is the occurrence of transient storage zo...

This article identifies the special features of the preliminary designing of RoPax vessels. The hull geometric parameters have been defined as well as the functional parameters of the designed vessel, in consideration of the volume/capacity criterion. The preliminary assumptions have been adopted. T he preliminary calculations algorithm has been proposed, a statistical analysis has been conducted of hull geometrical properties of 20 similar vessels and the relationships reflecting the connections amongst them were...

Article contains results of studying of quality of water of the Shershnevsky reservoir. The relationships between water chemistry parameters and aquatic macrophytes Shershnevsky reservoir (Russia) were investigated. Data on water quality and species diversity of macrophytes obtained from field studies conducted during the last two years. We studied the physico-chemical parameters such as water and air temperature, pH, conductivity, dissolved oxygen and carbon dioxide, nitrates, nitrites, ammonia, phosphates, chlor...

A stone column is often used technology of a ground improvement. The design of stone columns is still based on experiences and empirical computational methods. The most important properties of stone column are unit weight of a soil, relative density, strength and deformation properties. The total resistance and deformation of stone column is also significantly affected by properties of the original subsoil. The article deals with determination of the relative density of the stone columns by using the in пїЅ situ t...

Contribution follows the issues included in the contribution пїЅInfluence of a possibility to emplace a building and a type of a building being placed on the value of the landпїЅ published in the conference proceedings SGEM 2016. The authors of the contribution focused on issues related to the conditions for the building placement on the land. They will examine what conditions must be met to place a building, in response to various forms of placement permits. The conditions of the building placement determine the ...

Prediction of the effects of underground mining on the surface is connected with the necessity to verify the coefficients of the theoretical calculation of movements and deformations of the slope of a subsidence trough. One of the methods used to verify the coefficients of the theoretical calculation is the reverse evaluation of theoretical drops verified from the results of direct measurements of movements of surface points. The resulting movement of the surface point is resolved into a horizontal component (shif...

In the underground mining there are many sources of water hazard. Among them, there are water hazards from underground water reservoirs, located in old workings. Mine water inflow from such reservoirs can occur within a few seconds. Within the moments of a sudden and large water inflow, it is most often impossible to withdraw a crew from an endangered front of a mining excavation. In order to eliminate existing water hazard, exploratory boreholes drainages of water reservoirs are performed. In this paper the autho...

The preconsolidation pressure is an important parameter that determines the value of stress history exerted in the past on the subsoil in the geotechnical engineering. The Eemian gyttja is an organic soft soil from the пїЅZoliborz channelпїЅ located in Warsaw. These soils are used as a base construction in the foundation engineering. The laboratory tests that can be used to determinate the preconsolidation pressure, mainly uses the relationship between the stress and void ratio or strain. In practical geotechnical...

Oil production decline in Russia can be explained by deterioration of its oil reserves. That is why the country pays much attention to development issues of high-viscosity oil fields of the Middle and Lower Carboniferous sediments. In this regard, using new chemical agents with combined effects and study of their impact mechanism has become of scientific and practical significance. This paper presents a laboratory physical simulation experiment to study reservoir performance after steam and chemical agent injectio...

The aim of this paper is to thermo-analytically study the process of heat generation during flame and flameless combustion of lignocellulos pellets dust made from various types of raw materials. The heat release rate of the test samples was measured by a cone calorimeter. Different heat fluxes (30, 35, 40, 45 and 50 kW.m-2) were used to determine the behaviour of three different types of lignocellulose pellets dust under a thermal load. The mass loss and the time to ignition was continuously monitored during each ...

Being an inland city, Moscow is anyway vulnerable to extreme weather, in the form of heatwaves and very cold weather, storm and heavy rains. Without action, further climate change, MoscowпїЅs population growth, and other challenges will increase the risk of severe impacts. Preparing for extreme weather and further climate change is about managing risks and increasing our city resilience to them пїЅ it is therefore as much about the economy, quality of life and social equality, as about the environment. Moscow star...

Small hydroelectric power plants (SHPP) are accepted by the legislation of EU Member States to benefit from renewable energy promotion scheme through various market mechanism. The SHPPs are a particular form and case of hydroelectric power plants (HPP) and are having a maximum capacity of 10 MW. Since the green certificate (GC) promotion scheme was awarded in Romania (2008), a considerable number of SHPP were constructed and commissioned in the last years. These projects have the same philosophy as a large hydro, ...

We considered the problem of training personnel of mining enterprises in effective application of personal protective equipment for respiratory organs - regenerative self-contained self-rescuers based on chemically bound oxygen. The engineering design task of constructing a reusable self-rescuer simulator with chemically bound oxygen supply in the absence of regenerative chemical agent was formulated. The paper describes a new design of a self-contained self-rescuer simulator, which is equipped with electric heate...

The problem of visualization of fires is relevant to the design of emergency situation simulators for industrial facilities involving a risk of fire or explosion. The effectiveness of a simulator depends on the accuracy of animation (visualization) used in this simulator. The present paper aims to build a mathematical model of fire spread at industrial facilities with regard to the associated processes of smoke generation, release of toxic combustion products and their influence on physical condition of an individ...

Circular economy, i.e. a closed-loop economy, is an idea in which the value of products and materials is retained as long as possible. A concept that minimizes the environmental impact of the products created, through such choice of components and design that will allow them to be reused. Speaking of circular economy, it is impossible not to mention the role of alternative fuels. According to the EN-15359: 2005 standard - Solid recovered fuels. Specification and classes, alternative fuels are flammable wastes, def...

The paper presents development of Geotourism and associated mining heritage on a unique example of two mining sites пїЅ the oldest mine in the world for mining opal above the village of ?ervenica (Slovakia) and the oldest mine in the world for oil in BпїЅbrka (Poland). Both sites have rich mining past, which they want to use for the development of tourism. Based on the visits, structure of services and development plans, we speak in terms of tourism development on two different sites, even though the distance betw...

The goal of the present study is to evaluate the use of mesoporous silicate nanoparticles MCM-41 for the loading and release of the magnolol. MCM-41 has a hexagonal arrangement of mesopores, with diameters ranging from 2 to 10 nm. The homogeneity of the cylindrical pores, high surface area with uniform porosity, and good thermal stability, which make them an attractive molecular sieve for applications in sorption of large organic molecules, as well as host for quantum confinement of guest molecules. Also, the bioc...

Mathematical modeling of river flow formation processes is the basic research and engineering tool for modern hydrology. Despite a number of undoubted successes in modeling and a fairly wide introduction of models into practice, a number of problems remain that point to the fundamental difficulties of traditional approaches to the problem. The most important among such tasks are: assessment of the regime of extreme hydrological events, primarily floods; Use of hydrological models on unexplored basins; Perspective ...

There is a problem of a traffic block nowadays, which started in the middle of the last century and had become a real disaster for many developed countries. There is a variety of methods of traffic regulation and traffic flows management, which were developed at different times. One have become irreparably out of date and does not provide the solution of the traffic block problem in present conditions of growth of vehicles amount. Another allow to improve the management of urban traffic flows, but a lot of resourc...

Rural tourism has many development opportunities, mainly in the areas that still preserve customs, traditions, craft and handicraft. Ideal for creating a tourist offer competitive on international market would be the possibility of developing some tourist packages with local specific, to this purpose all the natural elements, plus the traditions and folklore, creates clear possibilities for realizing a rural tourism, at high international standards, allowing attracting tourists. In many countries operate successfu...

The future manned space flights will be accompanied by collecting a significant amount of unique experimental data: electrocardiogram, encephalogram, myogram, and rheoencephalogram generated by human body under conditions of outer space. However, while systems of monitoring crew membersпїЅ mental and physical performance capability are well developed, problems related to obtained data interpretation, which is necessary for predicting dramatic changes in human behavior or health status and for maintaining normal li...

Diabetes type I is one of the most important medical and social problem of health in all countries of the world. Treatment of diabetes type I diabetes is based on insulin therapy. Introduction ?-2? interferon in addition to insulin therapy for patients with diabetes type I at the beginning of the disease can slow the progression of the disease and even achieve remission. Therefore, the purpose of this work was to develop a method of producing nanoparticles loaded with interferon for oral delivery systems of drugs....

We developed based on GIS method for model decision implementation to manage the process of ensuring environmental safety. Management of environmental safety requires forming processes with predetermined properties. This work presents a control concept based on synthesis, which allows fulfilling these requirements. To do this, we discussed the dialectic of the social, economic, technical-technological systems and their influence on the processes of environmental security. We show that the control of the process of...

Lake Baikal is a world heritage site, one of the most valuable sources of a large volume of fresh water of its own purity. A serious threat to the endemic ecosystems of Lake Baikal, which determines the properties of Baikal water, are the wastes from the Baikal pulp and paper mill accumulated over the years of its operation (1966-2003). Sludge accumulators of this enterprise finding on the shore of Lake Baikal. They contains more than 6.2 million cubic meters of various wastes. There is a rather real threat of pol...

In many cases, the specific energy consumption indicators do not reflect the energy efficiency, since the amount of energy consumption is affected both by the technical condition and design of buildings and the specific use of energy, and specifics of its use and the proper organization (culture) energy consumption. The paper presents a generalized indicator of the energy efficiency of objects that have different purposes and are located in buildings with different technical conditions. The indicator contains two ...

This article describes a study approach of winter multi-hazards and assessment of their impact on shores, coastal infrastructure and hydraulic structures in the closed water bodies on an example of the Caspian Sea. The whole approach is divided into four main stages. The first stage is devoted to the analysis of existing criteria for hazardous natural phenomena. The second stage is devoted to the reconstruction (hidcasting) of winter multi-hazards. At the third stage, the classification of winter periods depending...

In this paper we focus on the evaluation of land use changes in the cadastral areas of the cities Martin and VrпїЅtky. Both cities are situated in the Tur?ianska kotlina Basin between the MalпїЅ Fatra Mts. and Ve?kпїЅ Fatra Mts. in the northern part of central Slovakia. Establishment of new industrial enterprises in the second half of the 20th century led to the creation of new infrastructure, urbanization and the subsequent interconnection of both cities. Railway transport and the пїЅOS VrпїЅtky company (Railway ...

The purpose of this article is to discuss the authigenic chlorite, illite and illite-smectite mixed layers at the sandstone of upper Triassic reservoir at Euphrates graben fields east of Syria related to their structural, morphology and diagenetic events and precipitation. The upper Triassic sandstone reservoir is one of the most important oil and gas reser-voirs at the east of Syria; it contains about 60 % of the total hydrocarbon volume at the area. Petrographical analyses combined with the different core analys...