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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 ZadnпїЅ Po?ana has been a part of the core zone of the Biosphere Reserve Po?ana within the project пїЅHuman and BiosphereпїЅ 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 N...

The aim of this work is the study of Congo Red removal from water by adsorption onto Zn4Al-CO3 type layered double hydroxide prepared from zinc ash. The preparation consist in dissolution of zinc ash with hydrochloric acid followed by synthesis of LDH by co-precipitation of zinc chloride with aluminum salt in alkaline media. The prepared LDH and the calcined product were utilized as adsorbents of azo dye Congo Red from water. Despite that the materials were prepared from a waste, their performances as adsorbents a...

The soil tillage system through the intensity of soil mobility influences its physical state, the capitalization of the fertilization system applied, and together they condition the water conservation in the soil, respectively the development of maize crop. The arable lands damaged by intensive conventional pratices are a cause of the loss of carbon and water in the soil, to a larger or smaller scale, according to soil, season and especially the stage of damage of soils. The purpose of the paper is the research of...

The floodplain forest ecosystems have the unique biodiversity despite of long-term human alternations of floodplain landscapes. The priorities of nature conservation in central European floodplains currently aimed to coppice and standard-with-coppice forest stands, which are relics of historical ways of forest management. This paper deals with a proposal of management strategy for floodplain forests in the Czech Republic. A management strategy which would compromise the commercial interests of production of renewa...

The atmospheric pollutants emissions derive mostly from industrial and social activities and represent a serious risk to the ecosystems and for the human health. At European level, in the recent years there has been a significant reduction in anthropogenic emissions, but certain atmospheric pollutants continue to harm the human health. The suspension particles represent a complex mixture of very small particles and liquid, with an extremely diverse composition. Along with nitrogen, the particulate matter pollutant...

This paperwork is based on the data emerged from a conducted research related to a moisture influence on ignition sensitivity of air-methane gas mixture. For the purpose of this demarche it were used method of signal processing approach as it is data filtering and mathematical transform of the experimental data. In the first part of the paper, it was presented the spark test apparatus used for the experimentation and the results of the experimental data obtained during the tests with mixture air-methane and moistu...

This article presents an analysis based on the research conducted by the authors in the rural area targeting the preferences for a certain type of investments depending on local conditions and value system. How manufacturers decide on the type of crops, endowment degree of fermentation is determined by the potential opportunities identified and estimated in a subjective manner, often under an archaic system of values. The consequences of such decisions are found in the reduced production, insufficient needs and th...

Construction of water storage lakes, necessary for different uses (irrigation in agriculture, water supply for population), implies sizing of the facility so that it can permit the transition of flood flows that could happen on the river where the water storage lake is positioned (built). Such a water storage lake is dimensioned, according to normative standards, for a flood which corresponds to a certain probability calculation. Taking into account the fact that frequently from the moment of finishing the constru...

Evolution and development of landslides is influenced by a number of natural factors (soil, geological substrate, relief, climate, vegetation etc.) and anthropogenic factors (deforestation, overloading of land with constructions, inadequate meteoric waters drain, artificial undermining of slopes-embankments for roads etc.). In this paper we propose to analyze the causes of landslides that affected the county road DJ 585 located in Visag area, Caras-Severin county limit, and also to issuing technical solutions for ...

Saline intrusion related to drought and sea level rise may result in changing of engineering properties of cohesive soils. To comprehend the variation of geotechnical properties of soils intruded by saline water, consolidation is one of the important aspects should be investigated. Undisturbed soil samples that originated from sediment in the Red River delta, Vietnam, were chosen. In the conditions that soils had been fully saturated by solution of four salt concentrations, 0.0, 9.9, 19.8 and 33пїЅ, the variation ...

The contribution focuses on the issue of realization of stoves in energy passive houses. In the context of building airtightness, implementation of the stove is considered as a significantly weak element in the construction of energy efficient buildings. Conventional stoves and fireplaces disrupt the airtightness of the building envelope. The paper describes suitable types of stoves, materials of fireplace insert, types of fuel and connection possibilities to the heating system. The attention is paid to meeting th...

The balancing devices in cable tension, DEC's, linking the extraction vessel (SKIP) and cables binding devices, DLCпїЅs, and are designed to equalize the tension in cables of extraction plant (multicable). The paper presents a new solution design of the screw-nut mechanism of initial tension cable for the uniformity tension and horizontal positioning of the rocking mechanism. The extraction vessels cables are attached to those by means of binding devices and equipment. Binding devices and equipment should be safe ...

High performance environmentally friendly aqueous adhesive nanodispersions for shoe manufacture were obtained by improving the polychloroprene adherence by chemical grafting of polychloroprene latex DISPERCOLL C 84 with methyl methacrylate in the presence of benzoyl peroxide as initiator. Grafting is demonstrated by the absence of monomer and polmethylmethacrylate in dispersions, decreasing of intensity of some bands assigned to polychloroprene as well as broadening and splitting of its C-C stretching band due to ...

The paper considers the main natural and technogenic factors forming the ecological state of the underground space and its influence on the long-term stability of buildings in such megalopolises as Saint Petersburg. Various contamination sources of Saint Petersburg underground environment, including sandy-clayey sediments, groundwater, gases of different genesis, microorganisms, as well as above-ground and underground structures, are analysed. Peculiar natural and technogenic processes, which activation or develop...

Vanadium and nickel exist in oils as porphyrin complexes. Metalloporphyrins are concentrated in the asphaltene-resinous part of the oil, while the maximum content of vanadium and nickel is accounted for by asphaltenes. Up to the present time, information about features of content and distribution of vanadium, nickel, and the types of the corresponding metal complexes in asphaltenes and resins of heavy oils and natural bitumens has a disparate and non-systemic character. In this work, composition and distribution o...

This paper aims to bring the latest information on annual calibration of measuring equipment installed in cement plants. Calibration should be certified to confirm the quality of continuous measurements, namely the measurements of plant equipment is controlled by parallel measurements with standard reference methods by an authorized testing laboratory (accredited). These types of measurements are referred to as instant annual measurements or measurements for the chimney testing. A continuous emissions monitoring e...

The area of interest (Slatinice wastedump) is located on the southern edge of the MostпїЅs basin central part (North Bohemia, The Czech Republic). The wastedump was deposited into the space of the fomer lignite openpit mine, called Slatinice. The body of the wastedump has an ovoid shape with the longer axis oriented in the NW пїЅ SE direction. The major thickness, about 100 m, reaching a dump in its central part. Monitoring wells have been realized in the area of interest between the years 2013 пїЅ 2016. The aim o...

In Polish underground copper ore mines belt conveyors are the most common transport facilities. In KGHM Polish Copper SA there are over 100 km of belt conveyors. To increase reliability of the transportation system there are built numerous ore bunkers ensuring continuity of the excavation during 5 working days of the week and on weekends, during which ore bunkers feed processing plants. In addition, some conveyors were built as reverse ones what in cases of emergency can provide alternative routes to supply ore to...

Piled raft is a recent innovative foundation. The superstructure loads are transmitted by piles and raft. It provides safe and economic foundation. In this paper, the influence of raft-subsoil interaction on a lateral behavior of the foundation was investigated. Three-dimensional models of the piled raft and pile groups were developed by ABAQUS program. Then, their lateral deflections were compared. A gap between the cap and subsoil in pile group was varied from 0.25m to 1 m. In addition, the pile spacing was chan...

Ostrava city and Karvina city has a long history of mining. Over time in Ostrava there has been a decline in mining activity. But closed coal mine may be performed in the correct disposal of heavy burden on their surroundings. One of the biggest dangers are the outputs of mine gases. If gas leaks into a confined space, there is an accumulation of gas and may result in an explosion. The article presents two cases of methane explosions, which were noticed in the Ostrava-Karvina coalfield. Such an explosion had a dev...

In order to determine the impact on the working environment and the effects of pollutants on human operators, numerous measurements were made using an experimental stand in a forge, machine building, equipped with heating furnaces, treatment furnaces, mechanical presses, oxyacetylene flame cutting equipment and mechanical saws. The paper presents the equation of technological material balance with inputs and outputs corresponding to the process of hot forging of different semi-finished products and the main pollut...

The paper presents experimental results obtained in determining the chemical composition of the base material- heat affected zone пїЅ filler material in reworking by ultrasonic welding field. The work shows the curve of the concentration of carbon, nickel, chromium, molybdenum, iron, tungsten, silicon and cobalt in the resulted material couple. There are presented differences between reworking in ultrasonic field and common welding process. The analysis of the results obtained and presented in the paper shows the ...

In recent years, the ultrasonic field has gained the attention of several authors in the area of employing it to process and interact with fruit juices as a viable alternative to the use of conventional processing technologies. The ultrasound technique main advantage, as a non-thermal treatment, is its ability to maintain juice quality whist enhancing the juice homogenization level. The aim of this study was to subject the sea buckthorn juice to ultrasonic field treatment in order to improve the its pulp stability...

The paper talks about the development of the geodetic networks using measurements of direction from the fixed points (with their coordinates known) towards the variable points (determined points). It starts from a situation that is given seven geodetic points whose coordinates are known, and an unknown point must be framed in such a network. After observation directions are carried out in three of the seven known points must be determined the coordinates of the unknown point. In order to reduce the large number of...

The paper presents an original experimental stand for measuring emissions and pollutant by-products in a casting shop of machine-building plant. The experimental results are achieved if the cast shapes forming in normal mixture and ground foundry.The work gives the calculation and determination of the coefficient of pollution and environmental indicators for the two molding processes. In order to determine the impact on the working environment and the effects of pollutants on the health of human operators, numerou...

The paper presents a new method for reconditioning of automotive parts in an ultrasonic field by reworking. Experimental results were obtained in the case of using different material couples. Using three couples of different materials, three technological metallization processes were studied: - oxy-fuel flame and wire; - three-wire electric arc - oxy-fuel flame and powder In experimental work the following material couples were studied: X30NiMoVCr11-STELLITE 12 AWS, X30NiMoCr11-TP 4000, FxMo1Si24-STELLITE 12AWS. D...

This article summarizes and analyses some of the recent developments in strategies to prevent or reduce the effects of restrained volume changes on the behaviour of concrete mat foundations. Mat foundations are usually restrained to some degree externally or internally. For the evaluation of the influence of external restraint in mat foundations, friction and interaction models are introduced. Early-age cracks due to restrained thermal contraction can be serious because, unlike flexural cracks, they can extend thr...

The paper describes the technology of controlling a new material called Polytech used for the production of prefabricated units. Prefabricated units made from a modified Polytech mortar based on expanded polystyrene derived from recycling were used to build a residential object. Prefabricated elements are load-bearing and, at the same time, insulating elements in the form of wall panels. In order to control the prefabricated wall with a lintel under realistic conditions, a control technology was suggested that inv...

Dissolving pulp is widely used for the manufacture of functionalized materials competing with cotton and chemical fibers. One of the most widespread applications of dissolving pulp is the production of cellulose acetates. To produce high quality acetates the pulp with high cellulose content, high reactivity, and narrow molecular weight distribution is required. Conventional dissolving pulp process is based on the sulfite pulping or pre-hydrolysis kraft pulping. Further processing includes cold or hot alkali extrac...

Learning cycles in experiential education show a striking similarity to the PDCA (plan-do-check-act)-cycle in corporate problem solving as stated by David Kolb already in 1974. A cooperative/dual system involving multiple rotations with the same company offers an attractive framework to enhance corporate innovation processes by integrating the enterprises with the education of students. From the beginning in 2002 the cooperative/dual study programme Production Technology and Organization (PTO) at the University of...

The determination of the geochemical fractions of heavy metals in soils of technogenic landscapes is a key issue in the study of their mobility. The current study aims to investigate of the accumulation and mobility of Cu in soils adjacent to the Karabash copper smelter at South Urals, Russia. Studies were performed in the plume zone of the Karabash smelter and in the floodplains of Ryzhii Brook and Sak-Egla River for the surface layer of soil (0-5 cm). The level of Cu pollution by soil located at a distance from ...

Thermo-electric power stations using coal are very important and complex polluters, due to the chimneys for burning gas evacuation which represent the main high sources of environmental pollution, while the ash dumps пїЅ are lower sources. The Doice?ti thermoelectric power station built in 1952 is located in the Subcarpathian hill area, on the Ialomi?a Valley, constituting a source of heavy metals pollution of this zone. From the geographical viewpoint, the studied territory can be included in the Subcarpathian Cu...

In this paper a new method of dual-polarimetric SAR image coregistration procedures is proposed. Both cases - coarse and fine coregistration are considered. In the proposed approaches the widely used coherence parameter is not applied. Instead, the dual-polarimetric signatures are exploited. They allow to identify location of strong point scatterers within the SAR images. These scatterers can be further used in coregistration procedure as reference points. The developed algorithms described in this work were teste...

The condition of underlying rock and footing masonry affects significantly technical condition of historical monuments. The caused subsidence may affect the origin of construction cracks, which may directly influence its stability. These impacts are mostly indirect and they are difficult to identify due to information lack. Footing masonry and long-term changes in the underlying rock are hidden underneath existing ground and floor level. If records related to foundations do exist, they are frequently fragmental. M...

The characteristic thickness and type of intercalations is important when assessing the suitability of bituminous coal deposits for exploitation. The data on coal partings is of key importance due to a number of factors, including: the optimum selection of technological processes of exploitation, the quantity of resources, the quality of the coal output, the cost of production and processing of coal, and the variability of quality parameters of coal пїЅ in that case, the ash content in the examined seams is worth ...

Petroleum and its derivatives are the main source of energy for industry and domestic consumption. Petroleum hydrocarbons are based on multiple carbon bonds that develop intense and raised complex structures when they bound with other characteristic molecules, hence the latest hydrocarbons have variety of forms and consist of short, medium and long aliphatics, aromatics and polycyclic aromatic hydrocarbons of different proportions. The accidental release of these hydrocarbons into the environment represents a majo...

The copper ore deposit in Poland is mined by three underground mines using mainly group blasting technology, which serves as the active rock-burst prevention, aiming at distressing rock mass by means of vibration provoked with blasting. The mines belong to KGHM Polish Copper Joint Stock Company (KGHM). The paper objective was to determine the influence of the length of after-group blasting waiting time on provoked seismic energy in one of the KGHMпїЅs copper ore mine. It was necessary to investigate, evaluate and ...

Located in the northern part of continental Portugal, the city of Porto is characterized by low-to-moderate levels of seismicity, thus one of reasons for the lack of studies regarding the influence of site effects in this area. In this study, the HVSR technique (horizontal-to-vertical spectral ratio) was used in order to obtain information about the fundamental frequencies of the ground in several parts of the city which was later compared to the geotechnical information presented in the Geotechnical Map of Porto,...

The aim of this paper is to highlight the degree of connection between the kinematic and dynamic characteristics of sports technique used in acrobatic elements and the performances achieved by junior gymnasts in balance beam events. For this purpose we used the following research methods: bibliographic study of the specialized literature, pedagogical observation, video-computerized method, using пїЅPinnacle StudioпїЅ and пїЅPhysics ToolKitпїЅ programs, method of movement postural orientation and evaluation of spor...

The marine environment is considered to be a highly aggressive environment for metallic materials used in the construction of the various elements of the structures. The aggressiveness of the marine environment is given by a number of chemical, physical and mechanical factors. They make maintenance of structures to be very difficult and very high costs are allocated. The phenomena of degradation by corrosion at level onshore and offshore are favored and accelerated by a number of factors related to long periods of...

Costs constitute the basic economic indicator that affects the business activities of mining companies. Cost optimization in the mining company is a key factor of business and the goal to successful growth and profit formation. The costs of the mining company are high and costs affect negatively corporate profit. We will search costs in mining companies in Slovakia in area of small, medium and large companies. The goal of this paper is to find out the development costs in the mining companies in Slovakia relative ...

The management features of mining project life cycle are connected with unregulated periods of coordination, confirmation, certification, a time gap between development stage and project implementation, specific features of mineral deposit technological processes (overburden removal, mining, mineral processing). The Scheduling method does not take into consideration volatile deviations. Thus the management method of project life cycle is corrected by technicians of changes management. As a result it leads to signi...

The article deals with the cost-benefit analysis of Short Rotation Woody Crops plantations (SRC) for local supply chains and heat use. There are analysed benefits and costs (expenditure) from the positions of farmers (land operators). The cost-benefit analysis has been carried out by applying the method of discounted cash flow as this method allows assessing the entire life cycle of the plantations including initial establishment of the plantation and several rotation cycles. There are assessed the plantations in ...

End-of-life vehicles are one of the fastest growing waste streams in the world which should be managed correctly in accordance with Directive 2000/53 / EC on End-of-Life Vehicles, which aims to making dismantling and recycling of ELVs more environmentally friendly. Consequently, the treatment of end-of-life vehicles with the purpose of avoiding environmental pollution and to recover useful materials, especially metals is a major environmental concern. Hence recycling is essential method to solve this problem. It i...

The purpose of this paper is to present the flood hazard maps using 2D hydraulic modeling. Many economic, social, environmental losses as well as casualties, occur annually due to floods [4]. To reduce the risk of hazard, flood hazard and risk maps are required for different probabilities of their production and creating models that can predict floods in production time, based on information received from sensors located on watersheds. Very important for an effective management against floods have become nonstruct...

Contemporary digital cameras enable automated process of creating several photos of the same frame in different exposure (bracketing). By the post processing of the photo, editing it in tone mapping, correctly illuminated parts of individual photos are merged into a new one - High Dynamic Range (HDR) image. The differences between illumination of the parts of the object in direct sunlight and the one in deep shade result in a lack of recognizable details which creates challenges in photogrammetric interpretation. ...

The project focuses on the creation of a structure specifically designed to answer the needs of energy efficiency investment financing in the Rhodope Region of Bulgaria. The structure Rhodoshop aims to promote innovative retrofit financing and operational models tailored to local conditions. Rhodoshop activities are based on the concept of a one-stop-shop that provides technical, economic, legal and administrative expertise to develop investment project pipelines for building and street lighting retrofitting in th...

The Black Sea coastal zone of Georgia is especially valuable for its natural conditions and economic function. Concerning to the implementation of requirements of EU-Georgia Association Agreement the main guiding document regarding the marine environment is The Marine Strategy Framework Directive пїЅ MSFD which came into force on July 15, 2008. The goal of the Marine Strategy Framework Directive (MSFD) is to achieve or maintain Good Environmental Status пїЅ GES in marine waters of Europe (including Black Sea) not ...

On the basis of the system tests of pre-stressed anchors in the anthropogenic homogeneous earthwork, valuable material has been obtained to describe the rheological features of the trench with anchors. Anchors were designed as temporary construction. Anchors were made in compacted soils with no detailed geotechnical parameters. The soil material was treated at the design stage as having a significant random distribution of mechanical and physical characteristics. This resulted in the anchor system test being the b...

The main purpose of the research presented in this paper is to study of volume coagulation of bentonite suspension. The study included measurement of particle size distribution, chemical and phase analysis of prepared suspension, as well as preparation of graph and determination of dependence between concentration of the suspension and the turbidity. Relationship between coagulant dose and concentration was also determined. Also research on usage of a several different mixtures of two distinct coagulants to intens...