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This contribution deals with the verification of airflow in the real air gap of an insulated roof deck with a pitched roof. The designed construction of the roof meets the thermal technical requirements for an energy passive house. The aim of this contribution is a comparison of experimentally measured values with values obtained through a computer simulation. Double skin ventilated roof structures operate on the principle of the removal of moisture vapour by the flow of air. The flow of air is generated by the di...

This study comprehends the stability assessment of seven slopes with Pre-Cambrian rocks and located in traffic-access areas of SW Angola, one (Slope 1) is located on the road access from Lubango to Tundavala Gorge, another slope belongs to the Caholo?s area near Humpata (Slope 2) and five of them (Slopes 3 to 7) are located on the Leba?s Sierra, along the sinuous hair-pinned sections of the National Road 280. Slope 1 is composed by quartzites, volcanic rocks and lutites. Slope 2 shows sandstones, lutites and quart...

The article presents the results of test georadar measurements performed in the test area of Zakrz?wek in Krakow (Province of Ma?opolska, Poland). The studied area is located on limestone formations, with numerous structures of karst origin (caves, sinks, sinkholes). A number of tests were carried out in the field with the use of ProEx System and RAMAC/GPR CU II of the Swedish company Mala GeoScience. Shielded antennas, with the frequencies of 100, 250, 500, 800 and 1600MHz, as well as unshielded antennas, with th...

Cultural heritage represent the way of living developed by humans and it is passed through time to a generation from another. It will always be a part from our history, and if we lose it we will lose our identity, that is why its preservation is very important. Preserving the cultural heritage is always a hard task which implies a lot of people, starting with archaeologists, architects, geodesic engineers and builders. Each of these people have to work together in order to achieve an optimum result. Photogrammetry...

The process of reduce smelting of antimony concentrate to produce a rough antimony in 800-1000 ?C are studied. The possibility of obtaining rough antimony by melting without slags and melting with slag-forming fluxes are shown. Analysis of feed and product recovery was performed by atomic absorption method on devices Perkin Elmer 240 FSAA, as well as the method to photocolorimetry on SPEKOL 2000. Thermal analysis was performed on derivatograph Q-1000/D system F. Paulik, J. Paulik and L. Erdey firm "IOM" (Budapest)...

The article is devoted to the improvement of circular saw machines with pneumatic drive of cutting mechanism. Currently, circular saws are widely used for producing of sawn timber because they have high productivity. The drive of saw blades more often is carried out by electric motors through additional transmission (gear, belt, etc.). In the recent literature are offered technical solutions, in which as a drive of circular saws provided by using of pneumatic. Energy source interacts with the circular saw will all...

The research represents the results of the study of metals in the leaves of Betula pendula R. in the settlement Ursk around the tailings of the former gold-polymetallic deposit located in Kemerovo region in the south of Western Siberia. 17 leaf samples were collected by the radial net with the step of 150-200 meters. The concentrations of chemical elements in the dry leaf matter were determined by the ICP-MS method. The concentrations of Hg, Ni, Cd, Pb, Zn, Ag, Sb, Ba, Co, and As in the leaves from 3 to 11 times e...

The gold deposit in Zlat? Hory region has been known since the middle ages when the first mention about gold-washing and gold-mining had been appearing from the thirteenth century. Later on, the amount and quality of ores enabled also development of underground mining of gold but also mining of another ores such as Cu, Pb and Ag. The new age history started in 1965 on the deposit Zlat? Hory ? south, when the mining was expanding to another localities as well. Termination of mining dates back to 1992. A wastewater ...

In recent years, the input of antibiotics into soils has sharply increased. The environmental behavior of antibiotics is not well known and the precise environmental risk assessment is not practical. Long-term studies have shown the efficiency of the diagnostics and monitoring of soils with biochemical methods, particularly with the help of the indices of soil enzymatic activity. We studied the impact antibiotics (benzylpenicillin, tilosin and nystatin) at different concentrations (100, 500 mg/kg) on hydrolase (ph...

Simulation modeling methods allow researchers to create models of complex systems. And it still remains a scientific field. Our purpose is to implement simulation models in training, but as a destination also to business ? to actually use autonomous applications as support systems decision-making in the tourism industry. This paper considers some opportunities of the system for simulation modelling GPSS World Personal Version for creation and applying simulation models in the training managers in the hotel busines...

Around one quarter of the Romanian territory is covered with forests but the surface has been decreasing steadily due to increased legal and illegal logging and reduced efforts towards reforestation. This led to economic problems and uncertainties about the current stock and location of the Romanian forests. Very few empirical studies have been undertaken regarding this topic especially at the local level. Using data from 41 Romanian counties between 1995 and 2015, our paper aims to find the relationship between t...

To date, in connection with active development of all branches of industry, transport, agriculture the most urgent issue of identifying the characteristics of the behavior of chemical elements in soils and parent rocks within local areas with characteristic patterns. The object of this study is to Rostov region. Soil cover of the territory is formed mainly by two genetic soil types ? chernozems and chestnut soils. Since 2005 was conducted areal soil geochemical sampling areas, which yielded data on the content of ...

The design of the new protection scheme in the Eforie?s area was done based on yearly averaged incident waves from the dominant NE wave energy direction, with associated preferred coastline, which agrees well with a natural behavior of the present shoreline. The sand nourishments were constructing the new overall orientation of the computed shoreline, now in post-construction period corresponding to a new orientation of the coastline. The present work presents the functional effectiveness of the model simulation f...

Indoor environmental quality in the residential sector significantly influences the occupants? wellbeing, having consequences on health and productivity. Integration of strategies of solar energy use, in passive system in the building architecture, is intended to reduce not only the energy consumption for heating, from non-renewable sources, but also to provide a healthy and comfortable environment for occupants. This paper presents the results of a study that aimed to assess the quality of the indoor environment ...

The article presents the results of tests of self ignition high speed engines used in fishing boats and vessels. The reduction of specific fuel consumption and exhausts toxic emission was possible by implementing preliminary fuel treatment that takes place directly in the fuel injector. containing catalytic material. The reduction of the nitric oxides emission level in exhaust gases has been obtained by means of preliminary fuel chemical treatment which is based on the use of heterogeneous catalyst and spirally sh...

Countries that largely base their production of electricity and thermal on coal, are exposed to a significant burden of the environment, mainly through the emission of harmful substances into the environment, including the production of large quantities of solid waste: including fly ashes, slags, ash, slag mixes etc. However, the waste generated in combustion processes does not have to be a burden to the environment. Due to the changes in legal regulations they may become a by-product (i.e. Coal Combustion Product...

This study focuses on petrophysical characteristics of the flysch Krosno Sandstones (Oligocene) from the Jordan?w-Limanowa area, located in the western part of the Polish Outer Carpathians (south Poland). This region of the Polish Carpathians is considered to be prospective for unconventional oil and gas exploration. Results of the applied laboratory methods enabled estimation of the crucial geomechanical and petrophysical rocks parameters ? Young?s modulus, Poisson?s ratio, mineral composition and brittleness. Th...

Accordingly to decision of International Commission on Stratigraphy in 2011 Quaternary period was increased till 2,6 million years. As a result of lowering Quaternary boundary the upper part of regional Akchagylian stage (Gelasian stage) was included into Quaternary as bottom subdivision. Thus upper boundary of Akchagylian stage ? boundary between Neogene and Quaternary, upper boundary of Akchagylian stage located between Upper and Lower Pliocene. Currently Sokol layers within Middle Volga area conventionally incl...

Kacza river is located in northern Poland in the neighborhood of the Gulf of Gdansk and the Baltic Sea. A Kacza having length of 15 km and catchment area of 53 km2 collects the water into the Gulf mostly from inhabited and forested areas within the administrative boundaries of the city of Gdynia. On the 14th and 15th of July 2016 in northern Poland on the large area of Tri-City agglomeration (Gdynia, Gdansk and Sopot) total daily sum of precipitation over 150 mm was recorded. Rapid rainfall in the area of Tri-City...

The Vrancea area, is known as a zone with intense and persistent crustal and intermediate seismic activity. The intermediate depth seismicity is concentrated in a high-velocity volume, an almost vertical body in fact a sinking lithosphere not completely detached, in the depth range from about 60 to 200 km. The epicentral zone is situated in an area of about 40 ? 84 km2. The present tectonic of the Vrancea area is a result of a former subduction of oceanic lithosphere, followed by a continental collision and slab r...

According to the requirements of Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption and Regulation of the Minister of Health of 13 November 2015 on the quality of water intended for human consumption, drinking water should be characterized by the appropriate concentration of selected parameters, i.e. heavy metals. The specified parametric values should not be exceeded not only in water treatment plant, but also on the particular parts of the production cycle and wa...

The design of personalized footwear insoles involves modelling the 3D shape of the insole based on the individual feet plantar surface shape and dimensions. The advantage of custom made insoles over the mass produced ones are represented by their enhanced functionality. Custom made insoles are recommended for subjects with various foot health disorders and for subjects who undertake intensive physical activities like athletes and soldiers. During human life time, under repetitive mechanical stress, feet suffers di...

At present, vehicles with various technical characteristics and various equipment for medical purposes are used to provide assistance in hard-to-reach places. GIS allows for the timely selection of vehicles for medical care, taking into account the quality of the road network and travel on the ground, developing the optimal route of travel at the point of assistance and assessing options for providing transportation services, taking into account changing natural conditions. The article considers the problems of pr...

Pyrite is one of the main rock-forming components for Upper Jurassic-Lower Cretaceous black shale Bazhenov Formation. The correlation between pyrite and total organic carbon is found to be relatively high; however, some deficiencies of this hypothesis are discussed. Interlayers with high pyrite and low total carbon contents are encountered in the transition zone where the Bazhenov Fm. grades into Podachimov pack and into the underlying Georgiev Fm. The presence of pyrite in such layers is associated with the diage...

Maozhou watershed is a highly urbanized watersheds in southern China that is a typical watershed in China?s rapid urbanization. Changed land use/cover(LUC) within the watershed changed the flood response, that requires the model parameter updating with the LUC changes induced by urbanization to have an accurate flood forecasting. Flooding in Maozhou watershed is serious, which was aggravated by increased urban land area within the watershed. Accurately forecasting the flood of Maozhou watershed is imperative, but ...

The paper presents the results of standard plastic limit test and fall cone test also used to determine plastic limit. Tests were performed on three clay soils. Soils differed from each other various percentage of the sand fraction. Plastic limit is standardly determined by hand rolling soil specimen. A sample of soil has moisture on plastic limit when the roller of the soil of 3 mm diameter begins to break up (CSN EN ISO/TS 17892-12). The test results are highly dependent on access laboratory technicians which pr...

The objective of the study was to increase the solubility of amiodarone hydrochloride by complexation with hydroxypropyl-?-cyclodextrin. After complexation a cyclodextrin/amiodarone inclusion complex was formed. The use of media containing surfactants is a suitable solubilizing method and as a result, a non-ionic surfactant - Tween 80 and an anionic one - sodium lauryl sulfate have been used. The dissolution profile of amiodarone hydrochloride and that of the inclusion complex, regarding the release of the active ...

A detailed analysis of a soil chronosequence located in well drained upland positions within broadleaf subzone of the Russian plain was performed to investigate the possible transformation of pedogenic pathways related to the climatic changes during the Late Holocene. The soil chronosequence included a soil buried under fortification (earthen) wall constructed in Early Iron Age and a day surface soil developing under natural (broadleaf forest) vegetation. Different pedogenic processes were evaluated using a number...

The commutation of inductive low voltage circuits of alternating current is accompanied by the occurrence of commutation over-voltages, often hazardous for the components of the electrical circuit. This paper describes a modern method for studying transitory regimes which occur at the disconnection of inductive circuits, based on the usage of a data acquisition system type NI-USB 6003 manufactured by National Instruments. The software used is Matlab, and the data acquisition method is based on Matlab programming. ...

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...

Land consolidation is a fundamental instrument for agricultural management, allowing complex changes in the agricultural and forest space. One of the primary goals of land consolidation, directly specified in the Act on land consolidation, is to improve farming and forestry conditions, through the correct farmland location shaping and the correct property boundaries formation. In Poland, consolidation is possible owing to EU funds the Rural Development Programme 2014-2020 (RDP 2014?2020). The agro - forest boundar...

Drilling rigs are one of the most primary equipment of the underground mining industry. Thanks to their application, it was possible to multiply several times obtained metal ore output generated in underground mines. For last several years, the research related to the development of special rigs predisposed to mine narrow vein deposits are conducted. Dynamic testing of one of such structures are discussed in the paper. The dynamic tests of the rig have been carried out in two ways - either as a real construction s...

In the context of operationalising sustainable development some progress has been lately achieved in several countries on global level. Recently it seems to be an open dialog among scientists, economists, politicians, as well as city councils representatives about future local plans regarding a sustainable urban development. This concretely means to develop and apply local strategies by considering sustainability requirements. In this regard it is obvious that mindset changes and behaviour modifications, beside te...

The article aims to determine how effective the stricter current requirements for the building walls and windows insulation are from the economic energy savings perspective. The article deals with a mathematical method for economic assessment of optimal building walls and windows thermal insulation. The mathematical methods used in this article are based on cost-benefit analysis. Recent research shows that the stricter requirements for the building walls and windows thermo-insulation may not always give the best e...

Recycled Concrete Aggregate is a material resulting from the crushing of concrete elements. Currently, as a result of increased demand for natural aggregates, artificial aggregates are sought as an alternative materials in civil engineering activities. Recycled Concrete Aggregate characterizes high strength, but some properties, both mechanical and physical, remains unclear, which often discourages engineers to use this material. The paper presents the results of the California Bearing Ratio (CBR) and cyclic CBR (...

Lignite open pit mines have large extent, the excavating and stacking equipment are far one from other, the conveying equipment ale very long, so, the face / mine managers have to record a big amount of data when making daily/weekly/monthly inspections. Also, they are critical inspection points, which are moving with the face's advance. The paper deals with a method and procedure of using smart phones with GPS for taking photos, which are after inspection geo-referenced on the mine plan and on the maps. The author...

In this article we consider the opportunity of the use of tree-ring ?13C carbon isotope composition records for detecting and recognizing changes in forest ecosystems in the south of the West Siberian Plain where the growth conditions for conifer trees are generally optimal. Trees grow in the closed stands. The wood of Larix sibirica and Pinus sylvestris trees was chosen as object of our research. The values of carbon isotope composition (?13?) were measured in tree ring cellulose and lignin of Larix sibirica and ...

A rise of a mean global sea level recorded during the 20th and 21st century is one of the most important indicators of climate change, which induces the thermal expansion of the oceans (steric effect) and ice melting. The mean rates of global sea level rise are estimated at around 3.1 mm a year. Those rates are routinely calculated from tide gauge measurements and satellite altimetry. However, regional rates that are driven by local geophysical processes can vary significantly. Thus, the impact of sea level change...

Heavy metal contamination of soils is a long-standing environmental problem in the world due to the increase of anthropogenic impact on landscapes. The proposed paper is the first step of an integrated ecological and geochemical investigation of soil cover of the Baikal region. Study object is the biggest island of the Lake Baikal named Olkhon, which is a part of the Baikal National Park, Russia. The study was performed by the key-site method. The method is based on the revealing an index plot, which characterizes...

Global Navigation Satellite System (GNSS) receivers are currently the standard equipment for precision positioning, navigation and timing, but their use in difficult environments, such as open mining pits, deep quarries, roads in canyons, is hindered by multipath propagation conditions or interference from adjacent equipment. In this paper, the improvements in signal tracking brought by use of vector tracking loops in GNSS receivers are analyzed. The effects of multipath conditions on tracking errors are diminishe...

Fast increase of Earth population during the last decades raised a serious problem when it came to providing fresh and good quality food (mainly vegetables) in big quantity over a short period of time. Due to relatively long lifecycles of plants when growing in gardens or fields, the best solution consisted in using greenhouses. Greenhouses proved to be a very important solution since they are capable of operating regardless of local environments if minimum requirements (heating and water) are provided. By offerin...

This article presents issues related to model building for tasks of forming and modifying a custom user interface. We describe the possibility of using neural network methods to process the input data and classify the categories of user interfaces. The investigated task is solved by modeling the structure of an artificial neural network based on a multilayer perceptron. The preparation of a training data set and the use of this set for the training of neural network are provided. Input layer is considered a distri...

Related to geodetic systems to take decisions in such a complex environment is not at all an easy task. To handle such a complex interdisciplinary approach several methods have been developed, using knowledge from different disciplines by considering several aspects and criteria. These can be very different one from another, some of them being of qualitative type, indeed hardly quantifiable. In this situation the question is which instruments could be used in order to support such a Multi-Criteria Decision Analysi...

Calculation of the local scour behind the hydrosystem tailrace structures is associated with determination of hydraulic flow parameters, characterized by a sudden increase in the depth. The flow parameters are calculated on the basis of T. von Karman's integral momentum equation for a submerged turbulent jet. The flow in the hydrosystem tailrace, in accordance with the approach of G. N. Abramovich, is considered as a set of a submerged turbulent jet, a vortex area, and a main flow in the tailrace passage. It allow...

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 ? situ tes...

The article presents the study on the effect of thermal and acidic hydrolysis treatment on the antioxidant activity of humic acids. It clarifies the changes in macromolecule structure resulted from the variations in periphery/nucleus ratio. Using the differential-thermal analysis, kinetic parameters of humic acid thermal-oxidative destruction were determined. The studied samples of humic acids were divided into three groups: humic acids extracted from air-dried fen and terrestrial fuscum peat, humic acids subjecte...

Large amount of methane trapped in post-coal extraction gobs and galleries in abandonment hard coal mines could be valuable carrier of energy. Methane produced by vertical well could be used to generate both, heat and electricity. However there are many problems with efficiency production of this methane. In dependence of geological structure, coal seams layering and technology used to drilling vertical boreholes from the surface, coal mine methane (CMM) production could be profitable or gives economic losses. Wit...

Nowadays there is a search for alternative motor fuels. In this situation, applied science is actively working on the problem of the search of cheap, high-calorie and environmentally friendly fuel.To solve this problem, the basic technological scheme of processing of real exhaust gases of TPP in a high-octane diesel is developed, and laboratory apparatus (column with cooling tubes) for the synthesis of methanol and dimethyl ether is suggested.The advantage of the developed scheme of reprocessing of real exhaust ga...

Lots of modern heat supply systems were designed and constructed many years ago, but used today with low efficiency. The task of optimization of heat supply systems to increase the efficiency of such systems is related with high capital expenses of such process, but also with high mutual integration of heat supply systems with other infrastructure objects. In this regard the heat supply organizations are faced with a task of optimization of the efficiency indicators of functioning heat supply systems with minimal ...

The dynamics of economic development in Timi? County is due to an accumulation of macroeconomic factors where the variation of administrative units and population plays an important role. These two important components, highlights developmental trajectories that can be influenced by formulate territorial policies to meet the actual needs. The paper will trace the evolution, over a 5 years period of (2009-2014) of administratively territorial units and the budgets allocated to education, health, culture, and enviro...