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Fish farming has a very long and rich tradition in the area of the Czech Republic. As the golden age of fish farming and building of fishponds, the second half of 15th century and whole 16th century are considered. In this period, huge number of fishponds was built in many parts of the Czech Republic. Many fishponds ceased to exist since this era but many of them remained until present. This means, besides others, that there are many fishponds within the Czech landscape which are very old. Some of them underwent r...

The paper aims at presenting oily water separators as one of the key components of complex lubrication systems used in seagoing vessels. Furthermore, the paper presents commonly used standardized connection flanges and pumps that may be considered a meaningful parameter in the evaluation of the efficiency of oily waste treatment systems in seagoing vessels. The objective of the current study was to discuss the working principles of selected oily water separators and to analyze their capacity, throughput as well as...

In the present work for the first time in the world practice 430322 occultations of stars by the Moon are analyzed. The relevance of the work is that the accuracy analysis of stars' proper motion in modern star catalogues can only be conducted using either observations of small planets or occultations, since only those observations are longterm and homogenous in time. When making the occultation database a comparative analysis has been used to study types and accuracy of occultation. For photoelectric observations...

The availability of the Baltic Sea for the largest container vessels is limited primarily to the depth of the Danish Straits. Ships with maximum dimensions of technical for shipping by the Danish Strait are called Baltimax. Currently, the theoretical size of the dimensions of the vessels are as follows: draught 15 m, width 42-48 m, length 240 пїЅ 260 m, capacity 100-120 thousand DWT. Therefore, the authors have analyzed the actual draught consumables container ships of the three largest companies in the world in t...

This paper analyzes the causes of groundwater breakthrough occurred during the excavation of deep pit in the central part of the city at the territory, which was being developed since the 14th century. Particular attention is paid to historical aspect of this area contamination and its impact on negative transformation of the underground space components such as soils, groundwater, gases, and microbiota. It is shown that the specificity of hydrodynamic and hydrochemical conditions has fundamental importance for as...

Changes of damage to the belt core that are not controlled during the exploitation can lead to dangerous accumulation of the defects (strains) in the cross cross-section. It can lead to serious weakness and even rupture of the belt. Early detection of the mic rodamage of the covers and evaluation of the increase speed of the damage allows the user to plan maintenance more precisely. Furthermore, it allows more effective cost management when conveyor belt maintenance is scheduled. In this paper, geometric data o f ...

The comfortable room environment and thermal comfort depends on internal factors and influences on the human organism. People are very sensitive to changes in indoor climate conditions. The body reacts feeling of thermal discomfort for some fluctuations. Thermal comfort is given by the air temperature and radiant heat, air velocity and relative humidity in the room. The main impact of these factors on the comfort level of individuals depends on the activity and type of clothing. Dantec ComfortSense system offers t...

Degraded post-mining areas have considerable potential for redevelopment. They are usually located in attractive urban areas and have convenient road and rail links to the rest of the city and other places in the region or country. These areas are often equipped with power, water and sewage systems. The redevelopment of these sites could take place in many different directions. They can be used to carry out production, service, commercial, residential and leisure activities. However, the unstabilized legal situati...

The overall objective of the project is to increase the energy efficiency in public Government buildings in Kosovo through implementation of energy efficiency and renewable energy measures in 140 (140 out of 369 total number of government building stock) public buildings in Kosovo. The updated European Energy efficiency directive sets the energy efficiency target of 30% for 2030 including measures to update the Directive and make sure the new target is met. All European countries have set their national policies a...

The urban structure of the old town quarter in Sandomierz belongs to the oldest and most interesting Polish architectural and archaeological sites. In this part of the town there are several objects written into the register of historical monuments. The location of the town on loess grounds, of a large thickness, has caused a lot of problems for the owners of real estates and the managers of technical infrastructure. This is the result of the characteristics of loess. Loess affected by external factors (rainfall) ...

In this study, object-based Land Use Land Cover (LULC) classification performance of Sentinel-2 image has been tested by comparing other medium resolution satellite dataset of Zonguldak test field. The test field covering a small area around Zonguldak is located in the Western Black Sea region of Turkey. It is noted for being one of the main coal mining areas in the world. For the purpose of the study, pan-sharpened Landsat 8 image was used because of its nearly similar ground sampling distance (GSD). The RGB and ...

This article defines the requirements for the architecture of the planned state satellite geodetic network, mathematical models (used in the processing of GPS measurements), navigation modules and analyses the possibility of integrating the high-precision geocentric coordinate system of the Republic of Kazakhstan with the global terrestrial system of the ITRS / ITRF. The main goal in solving problems of high-precision satellite geodesy is to determine the exact coordinates of the SGN point by processing code or ph...

The paper begins with the idea that in a large energy enterprise, formed by merging several energy companies with a mining company, the organizational culture is the key to success. The paper underlines the close connection between the organizational culture and the enterprise efficiency. The organizational culture supports the economic and social efficiency, the adaptability in the competitive context and the company which has a strong organizational culture may be saved from the consequences of unfavorable econo...

The pastoralism, with tradition in the history of the Romanian people, embraces various forms. In this viewpoint, the entrance with animals on pasture is linked to the Orthodox religious holiday, Saint George, celebrated on the 23rd of April. In the Romanian people tradition, too, the entrance with animals on the pasture is carried out in spring, after the flowering of the blackthorn (Prunus spinosa L.) present in protection belts or green fences that delimitate parcels in the studied area. Under such circumstance...

Constant economic development has an influence on the global emission of greenhouse gases. Having experienced natural disasters, e.g. floods and droughts, most of the highly developed countries became more conscious about their impact on the environment. In 2014, the global CO2 emission accompanying fuels combustion and industrial processes totaled to 35.669 billion tonnes, in that 298.131 million tonnes in Poland[15]. The counteracting climate changes in view, in March 2007 the European Parliament assumed an ener...

Satellite based global gravity field models represent EarthпїЅs long-wavelength static or time-variable gravity field. Their progress and development in the recent years has been induced by successful satellite missions, such as GOCE, GRACE and CHAMP and this will continue in the future missions. Resolution and agreement with quality terrestrial data are two attributes that indicate potential usability of each model. Maximum degree of spherical harmonics determines resolution of the satellite-based models. Agreeme...

Rosia Montana deposit is made up of several ore bodies; the natural factors are characteristics of each ore body. The deposit is accompanied by an extensive area of hydrothermal alteration, whose distribution has a complex character. Fast alteration and humidity were one of the factors that have been taken into account in order to achieve quarry. The quarry platform has reached at the level of the upper bottoms in the breccia area, which involves passing to the exploitation of the reserves included in these pillar...

Considering the prospects and possibilities offered by Global Navigation Satellite Systems, it is sure that they will be still developing and more widely used in other parts o everyday life. The aim of this study was to analyse how accuracy a defined position could be determined by using the Spirent 6300M simulator. The tests were carried out on the basis of the Ashtech GG24 receiver which is fully integrated with GPS and GLONASS systems. Thanks to this combination the measurements of the receiver are more reliabl...

The air is a mixture of different gases and particular matter, which make up for the earthпїЅs atmosphere. They allow for the existence of all life on the earth. With the increase in population and the progress of development, more and more substance of natural origin and on general not occurring in the nature, which may affect harmfully on the environment, gets into the air. Dusts and gases, flowing in excess into the atmosphere, cause local and even global pollution. Since the beginning of 2017 all the time in P...

The maritime territories play a significant environmental, economic, social, cultural and recreational role. It is therefore important to achieve a balanced, sustainable development to ensure equal opportunities for the population of all regions, bridging any gaps between the territories. Special attention is paid to developmental directions and opportunities of the maritime territories. The purpose of this research study is to identify the factors affecting development of the maritime territories of Latvia, perfo...

The moderate-size earthquake with local magnitude 5,7 which occurred on November 22, 2014 in Vrancea region, at 41 km depth, is the largest crustal event instrumentally recorded at the bending of the Eastern Carpathians. Using the method developed by [2] termed the Hash method, (incorporated in Seisan software) we obtain the focal mechanisms for earthquakes that occurred in Vrancea region associated with the seismic sequence of November 22, 2014. We have examined the main shock and 29 aftershocks that occurred aft...

Each building structure is rested on the foundation surface, so it is necessary to analyze these structures in interaction with subsoil. From the historical viewpoint, the most used is the Winkler model. Later two-parametric models of subsoil had been introduced, implementing the effect of shear forces and impact of subgrade around the foundation into the calculation. Other models are based on the theory of elastic half-space. The use of FEM introduced a lot of advantages to model structures in the interaction wit...

Grasslands, as specific components of the hill area from the West of Romania, belong, according to latitudinal and altitudinal zonation, to different vegetation zones, in concordance with the environmental conditions and implicitly with their own vegetal formations. Grassland classification in a certain vegetation zone offers very important information on biocenoses and biotopes, and also on its пїЅagronomicпїЅ characteristics (productivity, grazing capacity, maintenance, etc.). This study may be considered a theo...

The recent development of remote sensing technologies and rapidly accumulating environmental data derived from geographic information systems (GIS) now provide information on the patterns of terrestrial environmental variation at global and continental scales. Moreover, the past decades, an extraordinary amount of work has been undertaken to map species distributions and use the collected information to identify suitable habitats. Remote sensing metrics have become an integral part of SDM studies and contribute th...

One of the key trends in the sector of information and communication technology (ICT) is the Internet of Things (IoT). It allows the connection of two planes пїЅ the real and the virtual. This concept assumes that different devices and objects which use sensors can communicate with computers or exchange the collected data via the computer network. This can have a positive impact on the management of complaints, in particular those systems where applications are a manifestation of dissatisfaction internal customer....

With the current situation in world economy, rare earth elements are a valuable resource for many innovative technologies. Low supply of these elements and sparse mining sources concentrated in just a few countries caused REE to become a resource critical to the development of many high-tech branches of the industry. Although rare earth elements are widespread in the nature, due to their low concentration in most minerals, their processing based on flotation, gravity or magnetic separation of a concentrate is ofte...

In nature simultaneous manifestation of several processes takes place: diffusion and filtration of hydrocarbons, their emergence, overflows along tectonic fractures, etc. Other things being equal, the dispersion of gas accumulations occurs much faster than oil accumulation, due to greater mobility (migration ability) gases, better solubility in water, higher diffusion capacity, etc. All these natural processes that can lead to the redistribution or destruction of oil and gas accumulations take place mainly over a ...

The development of software (information systems in particular) is a time-consuming process. As statistical research shows more than half of the projects on the creation of information systems are not successful (there are some difficulties, or not implemented at all). All existing approaches consider the development of the system from the point of view of the objective concept, which represents the system as "a set of elements and relations between them." This leads to the problem of transition between the stages...

The article emphasizes that the important features of sustainable development in its multifaceted nature. It refers to a number of sciences, including economics (including logistics and transport), social and natural. The idea of sustainable development is integrated at the stage of planning, implementing and controlling infrastructure projects. The basic purpose of infrastructure projects is to balance the fundamental elements of the system that shape the future of the human society on earth: the environment, soc...

The paper deals with problem of analyzing the changes between the extent of the territory, which is affected by the release of ammonia from the stationary source and the changing atmospheric conditions in this territory. To determine the extent of threatened area the ALOHA program environment as a spatial decision support tool was applied. As a scenario the release of ammonia from the tank, i.e. tank wagon staying at the freight railway station in Zvolen. The results of the analyses confirmed the fact the atmosphe...

The development of modern technologies allows us to solve the problem of carrying out long-term measurements of velocity and temperature in lakes. The long-term local measurements of velocity have been conducted in Lake Shira (Khakassia) in the period 2014-2015.The velocity profile along the column of the liquid in Lake Shira occurs due to density summer stratification and wind. The horizontal velocities vary greatly in depth as well as in time. The principal component method has been performed to analyze the hori...

Co-operation of renewable energy sources (photovoltaic cells or micro-wind turbines) with 230V receivers, eg LED substitutions of traditional light sources, requires the conversion of low voltage direct current electricity to 230V AC. Various designs of DC/AC converters intended for island operation and synchronized with the power grid were tested. The Hioki 3196 energy quality analyzer was used for the study. The stand-alone systems are used in voltage converters of very simple solutions converting DC power to AC...

Considering that the EUпїЅs long-term environmental sustainability objective is among the United Nations Millennium Development Goals, this article examines how European horizontal legislation promotes products with a low environmental impact throughout their lifecycle and the provision to consumers of accurate, non-misleading and scientifically accurate information on their environmental impact. The article aims to present the legal instruments developed at European Union level to promote high-performance environ...

EOR thermal processes involve both introducing of warm fluids in oil reservoirs through injection wells and also extraction of warm/cool fluids through production wells. A model that describes the process for heat transfer from the fluids flowing through the well at its contiguous environment, and the calculation of the temperature along the well can be used in various applications of heat transfer aspects, especially when the bottomhole equipment of the well doesnпїЅt allow measurement. This paper presents a mode...

The demands on university teachers of technical subjects are changing in the context of economic and political developments in society and opinions on the form, content, scope and mutual relation between professional activities to be carried on. A university is a place where pedagogy and andragogy overleap due to the fact that there are regular students as well as professionals taking a course of study aiming at extending their qualifications. A university teacher affects both of these groups, as a pedagogue and l...

Promoting sustainable use of groundwater based on reducing pollution and on preventing later pollution is a basic desideratum of the Water Law No. 107/1996 with later additions and alterations and of the Directive 60/2000/EC in the field of water issued by the European Parliament. Water resources are a source of normal economic development: they ensure nature balance and life continuity and this is why we need to rationally use them during both normal and crisis periods (e.g., drought). Ground waters are an ecolog...

Construction and Demolition (C&D) materials which consists mostly of concrete debris were deposited on landfills. The development of road network results in an increasing demand for building aggregates which are part of the road construction unbound subbase. For decrease of investment costs and prevention of spoiling natural resources, the C&D materials, such as fly ash, steel slag or recycled concrete aggregates (RCA), were applied as a subbase mix. Among many properties influencing the quality of road material, ...

Biguanide and its N-substitutes derivatives represent a difunctional compounds group known for their diversity therapeutical activities, such as antimalarial, antibacterial, disinfectant, antiviral, antihyperglycaemic agents and recently literature reports as analgesic and antidepressant drugs, selective agonistsпїЅ serotoninergics for the serotonin 5-HT3 receptors. In the last years the literature points out a large practical applications spectrum of the 4f metal complexes for their remarcable spectroscopy, optic...

Aromatic and medicinal plants are an important source of antimicrobial molecules, especially in volatile extracts. The genus Thymus is considered among the richest general in secondary metabolites. In this context, this work examines on the study of the extraction of the organic compound by steam soxlhet of a species endemic Thymus numidicus from Bouira. These naturalsпїЅ substances are recovered by differents solvents; aqueous, ethanolic, and methalonic. On the other hand, the determination of the antimicrobial a...

This study presents functional and nutritional properties of the tomatoes (Solanum lycopersicum L), an ideal source for health promoting compounds. In this paper eleven cultivars of tomatoes were studied that were grown in greenhouses in Oltenia (Romania), which were differentiated between them by shape, size and colour of the fruit. For biochemical determinations, fruit samples were collected at physiological maturity. It was determined the content in soluble dry matter, total dry matter, vitamin C, content in ma...

Cruciferous vegetables are rich source of phytochemicals which play an important role as a health-protecting factor. These compounds and enzymatic systems may combat oxidative stress in the human body by maintaining a balance between oxidants and antioxidants. This is particularly important because under oxidative stress excessive formation of reactive oxygen species (ROS) can damage biomolecules, such as DNA, proteins, lipids and carbohydrates, and lead to numerous disease conditions. The enzyme superoxide dismut...

The global population of menopausal women is on the rise and expected to increase from 470 million in 1990 to 1.2 billion by the year 2030. Most of them suffer from postmenopausal symptoms, such as hot flushes, tender breasts, vaginal dryness, reduced bone mineral density, cognitive deterioration and neuropsychiatric disorders such as different mood disturbances and cognitive impairments including AlzheimerпїЅs disease (AD). Considering the wide use of complementary and alternative medications such as bioactive su...

Gridded climate data are valuable source of information that can be used in various fields of environmental studies. One of the example is dendroclimatological analysis, where climatic data are essential part of the study. These data are especially useful when there is a lack of weather station data for the study area, the available data are incomplete or their time span is insufficient. However the accuracy of gridded data can be sometimes questionable. In this study gridded data planned to use in dendroclimatolo...

The coal processing industry uses a various technology for the process control. Various devices and control systems there can be implemented. With the support of automation, the production of final product can be more effective. Modern control system requires an advanced control algorithm on a several control levels (i.e. stabilization, optimization). The paper focuses to the process of coal combustion and coal gasification. Primarily two processes are examined i.e. underground coal gasification (UCG) and coking. ...

Landslides are common and frequent geomorphic phenomena for the plateau regions in Romania having important consequences, especially economic ones, that needs designing scientific and technical plans for landslide risk mitigation. For this, an important preliminary step is assessing and mapping the landslide susceptibility. This paper examines a plateau zone in eastern Romania providing such a map, based on the landslides inventory, the digital elevation model (DEM) and the thematic layers of several factors thoug...

The increasing number of cars contributes to the degradation of human living space. This phenomenon affects both urban as well as residential areas. The communication system of housing estates made in the second half of the twentieth century in Poland was not designed for such a large number of cars that it has to handle today. Many factors influenced the present appearance of the prefabricated multi-family houses. First of all the obligatory standards, which assumed nearly ten times smaller parking rate than we a...

The paper deals with the removal of hydrocarbons C10-C40 from the river sediment using flotation and bacterial leaching. Flotation, as a purely mineral processing method, was used to remove a large percentage of organic pollutants. Flotation has not been applied in the cleaning of organically contaminated soils and sediments in the Czech Republic so far. The flotation collecting agent was Montanol 551. The flotation results show that the method appears as very effective as dominant proportions of the pollutants pa...

Using of HCAC as a clearing material of hydrometallurgical productionпїЅs effluent. Hydrocarbonoaluminate of calcium is synthesized in the system CaO-Al2O3-Na2O-CO2. Such system is characteristic for high silicon content aluminum raw on alumina processing plants by sintering method as desilication reagent. By this method aluminatesпїЅ solution decomposition conducts by carbonization receiving of aluminium hydrate and sodium liquor. HCAC has developed surface, neutral pH, which let us using it as clearing material ...

The article describes the chosen Japanese production and maintenance management philosophies, such as Lean Management, kazien and TPM. Japanese approaches to the process of work organizing and work planning, workplace preparing, tasks, duties and responsibilities turn out to be the most effective and the most efficient in the world. The practical application of these philosophies entails achieving the measurable benefits by the companies that use them. The basis of these philosophies is the elimination of all kind...

The possibility to use complexing reagents-collectors in floating different rare-earth and rare-metal ore has been studied. A prognostic assessment has been performed of efficiency of organic heteropolar compounds as flotation reagents-collectors on the basis of moleculeпїЅs energy parameters. The interaction has been considered of rare-earth and rare-metal minerals such as eudialite, zirconium, loparite and columbite with complexing reagents. Gain in energy (??) has been calculated by computer modeling at formati...