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Sustainable development of the state or the city as a whole is conditioned mainly by the sustainable development of its individual parts which also include water management infrastructure containing the sewer system. The article deals with the evaluation of the technical condition of the sewer network in the municipality Zaben in the Czech Republic. The first part of the paper describes the basic information about the sewer network in the municipality, its location, condition, age, etc. This part is followed by th...

In the context of sustainable development, special emphasis is assigned on the use of renewable and non-polluting energy sources. An important potential is due to the solar energy. There are several ways to convert solar radiant energy into useful energy forms, the most direct of which is to obtain electricity by using photovoltaic cells grouped into photovoltaic panels. Considering all the factors that contribute to the performances of a solar cell, as there are: solar radiation, generated power, energy productio...

Recently, hydrothermal catalytic process in reservoir conditions (in-situ upgrading) has got remarkable attentions. In this study, the feasibility of the in-situ upgrading of Ashal?cha crude oil (Tatarstan region, Russia) using steam and catalyst co-injection was investigated at the temperature of 350 В°C under high pressure for 24h using a stainless-steel 500-ml batch reactor. The changes in the density/API gravity, viscosity, chemical composition (SARA fractions, the composition of saturates), and elemental comp...

This paper presents the results of the study of Kraft lignin hydrogenolysis process, using 5%Pd/C. The catalyst was investigated using the following physico-chemical methods: X-ray photoelectron spectroscopy, infrared spectroscopy of diffuse reflection of the adsorption of CO (DRIEFT), transmission electron microscopy, thermal gravimetric analysis, differential scanning calorimetry, the low-temperature nitrogen adsorption. Among the products obtained during hydrogenolysis of lignin the most promising for fuels are...

The present work aims to present how to identify the causes and sub-cases that lead to delays in the implementation of the projects with non-reimbursable financing using the cause-effect diagram (Ishikawa), as well as how to combat the main causes. The importance of timely identification of the major issues and the concentration of the management teams in solving them can reduce the risk of losing the grant, avoiding the decommissioning of the European funds, while helping to increase their absorption. Projects wi...

In this paper, a pipeline implementing a multi-scale approach that can be used for modelling different steps of aerogel production is presented. Closely integrated modulesfor aerogel structures generation, properties prediction and adsorption, diffusion and chromatography processes modelling provide various options for systematic and comprehensive study of aerogels by performing computational experiments, which allows to reduce number of laboratory experiments. The results of pipeline validation are presented for ...

The iron phosphates coagulant is commonly used in lake restoration to improve water quality and eliminate cyanobacteria bloom. Nevertheless, the short-term abiotic environment transformation in particular inside macrophytes communities is still not sufficiently studied. The field experiments were carried out in mesocosms installed in Chara hispida community. This species is characteristic for eutrophic lakes, therefore is strongly vulnerable to restoration treatments. In the study five parameters were analysed: pH...

The cementing of wellbores is of the utmost importance at each stage of the drilling jobs. Regardless the conditions in the well, the aim of the cementing job is to efficiently seal the annular space between the casing and the wellbore wall, and to liquidate absorptive zones and also the flow of fluids in the annulus. The properly performed cementing job guarantees successful and safe exploitation of the well. A correctly performed cementing job in a borehole depends on the design of the borehole, geologic-reservo...

The discovery of Bakyrchik gold-sulfide black shale deposit was in 1953. It is situated in Western Kalba metallogenic zone, originated in late Paleozoic age as a separated line between palaeocontinents of Kazakhstan and Altai-Mongol. The Bakyrchik deposit has acicular arsenopyrite and arsenical pyrite containing micron-size (2-5 ?m) gold inclusions. It is large gold reserve (280 tons) in black shales of northern east Kazakhstan. The gold is associated with acicular arsenopyrite, lesser extent of pyrite. The sulfid...

Oregano, (Origanumvulgare), known in our country as bumblebee or marjoram, belonging to the Lamiaceae family and is used as spice or medicinal plant. This study was conducted to evaluate the chemical composition, antifungal and antioxidant properties of Origanumvulgare plant and oil.The chemical composition of Origanumvulgareplant samples were performed using the official AOAC methods in the laboratories of the Interdisciplinary Research Platform of BUASVM from Timisoara. Alcoholic extracts of Origanumvulgareplant...

Oregano, (Origanumvulgare), known in our country as bumblebee or marjoram, belonging to the Lamiaceae family and is used as spice or medicinal plant. This study was conducted to evaluate the chemical composition, antifungal and antioxidant properties of Origanumvulgare plant and oil.The chemical composition of Origanumvulgareplant samples were performed using the official AOAC methods in the laboratories of the Interdisciplinary Research Platform of BUASVM from Timisoara. Alcoholic extracts of Origanumvulgareplant...

New efficient ways of processing mineral raw materials are one of the determinants of scientific and technological progress. In recent years, there has been a tendency to reduce the metal content and complicate the mineral composition of processed ore raw materials, and increase requirements for environmental protection. All this leads to a rise in the cost of mining and extraction of useful components. The ever-growing demand for metals leads to the need to use poor ore, deposits lying at great depths, dumps of m...

Global issues such as resource scarcity, climate change, land and ocean pollution linked to the widespread growth model of production and consumption have led to the introduction of many concepts and approaches such as 'sustainable development' and 'green growth', and etc. It is also a circular economy, and it has many similarities to these concepts and approaches that deal with the relationship between people and their environment. However, it has distinctive use and, in principle, has more radical consequences t...

The purpose of this paper is to determine the rate of methane (explosive gas) and of carbon dioxide (asphyxiating gas) in the mine workings of Dej salt mine. In Romania there are six salt mines which exploit the salt through underground mine workings: Dej salt mine, Tg. Ocna salt mine, Slanic Prahova salt mine, Ocnele Mari salt mine, Cacica salt mine, and Praid salt mine. The purpose of the present paper work is to establish the methane release (explosive gas) and the carbon dioxide release regime in mine workings...

This study reviews the problem of creating an algorithm for classifying objects in a Grid system, which will allow the automation of this process to proceed. Splitting objects into classes allows you to effectively manage the resources and processes that occur in a distributed system. Classification according to the current values of characteristics, by reference values of characteristics, with an analysis of the original causes of the result and also a modeled classification is considered. The problem of determin...

The impact of climate changes on rural areas will take place in the context of many and dynamic political, economic, social, and land-use trends, the focus being on water supply, food security, agricultural incomes and rural infrastructure. Adapting rural areas to climate changes challenges is not an easy task and involves complex and multi-dimensional processes which are developed at different scales. Adopting and implementing adaptation measures for a climate smart and resilient rural space is only a stage (whic...

Source water for water treatment plants can contain various mechanical and biological impurities and it is required to remove them, before the water can be used. In order to eliminate most of the solid pollutants coagulation process is commonly employed. Process of coagulation is efficient in the case of hard to settle and colloidal particles, which are usually present in water, but it is important to know what kind of pollutants are present in the suspension in order to find out the best possible solution. This p...

The effect of coke formation on the pore structure and permeability in the process of the in-situ upgrading of heavy oil under supercritical condition has attracted more and more attention. Studying coke formation induced by thermal treatment is currently an important task for selecting the optimum upgrading technologies for heavy and extra-heavy oils. This research is intended to evaluate coke formation through the process of aquathermolysis in the condition of superheated steam injection. In this study, upgradin...

The investigated cold spring (10.4-10.9 ?C) is located onto a reverse fault zone within the Subcarpathian nappe (Vrancea region). A small travertine deposit has precipitated along the stream. The spring-water samples display an essentially calcium-bicarbonate chemical facies, indicative of a prevalently meteoric water contribution. Still significant Na and Cl concentrations - each of them amounting, when expressed as miliequivalents, to about one third of the HCO3 concentration - also suggest mixing with a signifi...

The main problems faced by any city at present are: reduction of natural resources, environmental degradation, increased carbon dioxide, demographic and social changes associated with the urbanization and population growth phenomenon as well as increased frequency and size of floods urban.Stormwater collection is a strategy for adapting to climate change. This strategy has been applied by many civilizations in the history of mankind, pluvial water collection systems have met, for the first time, in areas with long...

The use of colored asphalt pavements plays an important role in answering the environment requirements, the operational aspects and visibility and road safety requirements. In this context, the paper deals with the possibilities of realizing colored asphalt mixtures corroborated with the ordinary tests to determine the physical and mechanical characteristics. Meanwhile, the article presents the advantages of using colored asphalt mixtures in different cases for improving road safety.

During the Thirty Years? War in Europe, the Czech Lands represented one of its most frequent battlefields. In 1647, when General Wrangel led a Swedish campaign towards the central parts of the Habsburg Monarchy, a short clash between the Swedes and the Imperial army took place in Western Bohemia near to the castle of T?ebel. Previous studies of iconographic sources published in contemporary documentary writings, supplemented by field archaeological work, have shown that the Hrotek Hill near Plan? was the likely po...

This paper examines comfort and cohesion in outdoor and semi out door spaces of historical environment with a hot and dry climate using the example of the traditional streets, courtyards and recesses of Sanliurfa, Turkey. The goal of this research is to investigate the design principles for achieving comfort and social cohesion in the historical environment of Sanliurfa traditional architecture. In Sanliurfa historical settlement, where traditions and customs have an important role in the social structure, has cre...

One of the possible solutions to reduce or eliminate landfill gas emissions is to cover the landfill with bioactive cover layer, where methane is oxidized in-situ. The main innovation of the closure project at Kudjape landfill, Estonia, was to extract the < 40 mm fine fraction from the same landfill cell by using landfill mining technology in order to construct a methane degradation cover and to restore the previous landfill area for the benefit of the community. European larch (Larix decidua) and Norway spruce (P...

The present study explores the impact of natural and climatic factors on the conditions and efficiency of the activities of Russian public utility companies in the context of the theory of the economic system's adaptation to the rapid changes occurring in the natural and climatic conditions using the example of the Far North. Given the change and uncertainty in the factors of the external and internal environment for public utility companies, innovative processes in the field of management are regarded as an imman...

Due to the fact that the printing industry is one of the largest production departments in the EU, its impact on the environment cannot be neglected. The printing activity is based on the use of appropriate substances and chemical preparations. They occur mainly at the stage of preparing printing material and subsequent printing. Chemical and photochemical processes occurring during printing, the use of water and air for cooling machines and devices as well as production wastes - these are factors that may affect ...

The process of underground hard coal exploitation is accompanied by the release of methane. This phenomenon has been present in the majority of Polish hard coal mines, with the intensity of methane release from hard coal seams exhibiting a growing trend on a year-by-year basis. The highest amount of this gas is emitted into the atmosphere, with only a small part being collected by methane drainage systems and subsequently used for industrial purposes. In 2017, all the hard coal mines in Poland released 611.15 mill...

Currently, it is possible to capture geospatial data, which represents terrain surfaces in the form of point cloud, by using two diametrically different technologies: laser scanning and ?structure from motion? technology which is based on sets of properly acquired 2D photos. Both of these technologies allow to obtain a substantially the same product - point cloud, although it is a direct measurement product from laser scanning technology (TLS), while in the case of the structure from motion technology it is a deri...

Municipal waste sludge belongs to a specific type of wastes formed in a process of mechanical, biological and chemical treatment of wastes. The sewage sludge, due to its variable content, constitutes a big problem with respect to optimum and safe sludge management. There is no single correct way to treat sewerage sludge. One needs to remember that the selection of the management method of the formed sludge is individual and depends to a large extends on the size of particular waste treatment plant. A subject of te...

The Verkhoyansk fold-and-thrust belt (VFTB), composed of terrigenous-carbonate rocks of the Upper Proterozoic, Paleozoic and Mesozoic age and formed in the Late Mesozoic time, stretches along the north-eastern and eastern framing of the Siberian platform. Studies were carried out (from south to north) in the Kuranakh and Kharaulakh segments of the Western-Verkhoyansk sector of VFTB and in the Olenek sector of VFTB. Structures of the Kuranakh and Kharaulakh segments have submeridional strike, and the Olenek ? subla...

The breeding value of the selection candidates is the criterion on which the best individuals are retained for breeding, corresponding to proportion of the selected individuals. When the livestock is grown in an ecological system, the only leverage by which meat production can be increased is the use of the individuals with the highest genetic merit. The average of breeding values of selected individuals coincides with genetic progression on generation, implicitly with the growing production in the considered trai...

One of the most important problems in the socio-economic development of the adjacent territories of Russia, China and Mongolia is water supply. Russian regions, including the Republic of Buryatia, the Trans-Baikal Territory and the Amur Region, are characterized by sufficient reserves of water resources, relatively evenly distributed over the territory. The structure of water use in the regions is dominated by energy and also in the Trans-Baikal Territory and the Amur Region large volumes of water consumption are ...

At present, the monitoring of forest areas is a national requirement. The importance of protecting forests in mitigating climate change is well known. On the other hand, the economic aspects involving the efficiency of forest management imply correlation with the growing demand for wood on the market. From this point of view, the inventory and the evaluation of the rate of growth and yield of forest areas is extremely important. Estimating the growth rate per unit of hectare and the level of production of wooded a...

The quality of water sources used for drinking water production is highly varied. Many problems arise in groundwater due to the content of hydrogen sulfide and ammonia. Thei presence of its in water affects the organoleptic properties, in disosolved form the hydrogen sulphide confering undesirable taste and irritating rotten egg smell which make it unpalatable. Ingestion of sulphides through drinking water can result in stomach discomfort, nausea and vomiting. Ammonia in concentration above 1.5 mg/L can cause odou...

This study has its aim to compare the performance of modern structured and unstructured catalysts in a dry reforming of methane (DRM). DRM is used to obtain a mixture of H2 and CO with almost equal fractions of both products, which is subsequently used in synthesis of some chemical valuable products. The kinetic scheme for tungsten carbide (WC) catalyst was taken from the literature. Using the experimental data for a fixed bed catalyst, we have fitted the parameters of the kinetic scheme of DRM on WC catalyst. The...

Due to the increased consumption of S420NL thick steel plates, the world steel price is expected to decrease. The main purpose of this investigation is to find an optimal solution both from a technical and commercial point of view to produce heavy plate 40 mm thick microalloyed S420NL hypoeutectoid steel. The imposed resistance class for this alloy is 420MPa with proven tenacity properties at temperatures up to-50 В°C. The experiment encompasses the necessity of defining a metallurgical route including chemical co...

The paper presents model-in-the loop simulation results of the roadheader cutting speed control system. The roadheader is equipped with an 132kW induction motor supplied from the frequency inverter. The output frequency is calculated by a PI speed controller on the basis of speed error (signal difference between a reference signal from the load controller and the measured signal from the incremental speed encoder). The whole control system model (involving an inverter model, sensor model, induction motor linearize...

The aim of the current research is to present an actual and overall picture of the arsenic (As) contamination of the soils in the Bulgarian part of the Danube floodplain between the Timok River and the Vit River including the following lowlands: Bregovo-Novoselska, Vidinska, Archaro-Orsoiska, Dolnotsibarska, Kozloduyska, Ostrovska and Chernopolska. One sampling campaign was carried in October 2017. The concentrations of As (mg/kg) were measured in <0.063 mm size fractions of 102 soil samples (56 samples from 0-20 ...

Small kettle holes filled with water are commonly found objects in damp lowland landscape. Their location within an agricultural and forest area may cause, irrespective of the land use, the enrichment in biogenic substances. Deficiency of data about the phosphorus and nitrogen content in the sediments of small water bodies, which makes the discussion of this subject more difficult and restricting it only to large water reservoirs. The chemistry of the surface layer of bottom sediments (organic matter, phosphorus, ...

A comprehensive, three-year (2013 ? 2015) geochemical analysis of soils has been conducted within impact areas of the main Russian and Norwegian coal mining centers in Svalbard. This study was focused on identifying both natural and technogenic trace elements and rare earth elements within a variety of landscapes with location of emission sources and natural factors of contaminants' distribution having been taken into account. The concentrations of macro, micro elements, Trace Elements (TM) and Rare Earth Elements...

The forecast of a convective situation is achieved not only through the analysis of the synoptic situation as well as with the help of instability indicators. These are determined either by means of data obtained from aerologic surveys or by using numerical models. The data presented in the paper are obtained using the model ALADIN (Aire Limit?e Adaptation Dynamique D?veloppement InterNational) model. Run instability indicators were KI, TTI (Total Totals Index) and CTI (Cross Totals Index) CAPE and MOCON. The anal...

In case of using equipment in areas classified as with hazard of potentially explosive atmospheres, this shall be designed so as to avoid the ignition of the surrounding explosive atmosphere in which it is intended to operate. Equipment designed for use in potentially explosive atmospheres have to be assessed according the provisions of the ATEX Directive 2014/34/EU regarding the ensuring of explosion protection characteristics. In case of electrical equipment this assessment usually uses the provisions of some sp...

This article outlines the steps to be taken to ensure that the old Land Book Plans can work together with the current Land Plans and the Orthophoto Plans. For this purpose, scanning steps, georeferencing, must be performed. Then compare the old plans with the current ones by overlapping them over orthophoto maps. Following this stage, we can find out if there are differences between the older and the current plans or the current situation in the field. By overlapping, in the same reference system, we can very easi...

Climate change is affecting forests both directly ? via increased frequency and/or severity of meteorological conditions, impacting tree growth and/or survival (e.g. wind storms, drought spells etc.) ? and indirectly ? via improved conditions for diseases and pests. Also interaction between the biotic and abiotic factors plays an important role. It is important to consider these circumstances in forest management policies to ensure that forest owners remain interested (financially motivated) in forest management. ...

The article deals with geodetic works connected with the construction of the space position of the track together with the measurement of the 3D axis of the track on the section 2363 (the state border between the Slovak Republic and the Czech Republic and the railway station Horn? Lide?, which is located in the territory of the Czech Republic). In the introduction, the purpose of measurement and site description are briefly described. In the core of the article, there is a way of creating SPT (spatial position of ...

Constructive details of welded steel industrial structures involve critical areas in the structure. A welded steel structure behaves differently toward a steel structure made of laminated steel profiles in a pervasive corrosive environment. Details of the joining of the steel elements must correspond primarily to the strength of the welded steel structure but also to the impact of the corrosive environment, that is to say, some details must be chosen to fade the effect of the corrosive environment. The paper will ...

Belt conveying belongs to high-performance, economically and energy efficient continuous system. Optimization of this conveying systems makes possible reducing the total operating costs up to 30%. For this reason is necessary to choice of the suitable structural elements. Conveyor belt is the most important element of this system and quality of its strength properties is a needful prerequisite for a smooth operation of belt conveyors. Insufficient quality of strength properties has a negative effect on the reliabi...

The research study analyzes the state of degradation of Kula Izvoranu - Geblescu - heritage building from Oltenia Region and proposes solutions for its rehabilitation and introduction into the cultural circuit. The influence of the known parameters - construction period, used materials, is analyzed. The building being in precollapse stage is mandatory to be rehabilitated. The methods used are non-invasive and are based on visual inspection, historical analysis of buildings. There were performing a lot of compressi...

Polish sedimentary copper ore located in Lower Silesia (SW Poland) consists of three lithological fractions: sandstone, dolomitic and shale. The main copper-bearing minerals are chalcocite, bornite and chalcopyrite. The main carrier of organic carbon is shale ore. This part of ore is the main reason for technological problems in a metallurgical process. However, shale ore is the part of copper ore which is the richest in copper and other accompanying metals such as silver, lead, zinc, nickel, cobalt and other. The...

The uncertainty of methods for determining the heavy metal compounds, as well as problems in the comparison of the methods used, require further studies in this field. The aim of research is to study the fractional composition of Cu and Zn compounds in soil under model contamination conditions using different fractional methods. Chernozem Haplic was artificially contaminated with Cu and Zn acetates at rate of 300 mg kg ?1. Distribution of Cu forms in soil at the use of sequential fractionation by the Miller method...