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The purpose of this article is describing a project of underground facility at the Technical University of KoпїЅice. The idea of schoolпїЅs mine established by the Technical University of KoпїЅice started a few years ago as a result of needs to improve learning process in study programs related mining, tunneling and geotechnologies and improvement of practical education. We take as example mines or other underground facilities that are used in the learning process at our partner Universities in the Czech Republic ...

One of the most popular systems of simulation - GPSS World provides users (1) software tools to interact with the system in the process of simulation research and (2) software tools, realizing immediately the implementation of the model (including: syntax analyzer interpreter model, clock modeling, management of the list of events and more.). Until a few years ago the programs in the first group only automated a part of research itself, namely the creation of a text model and conduct experiments with it. In the ab...

Developing lipid products with colloidal structurally and functionally modified properties, others than the starting base, playing a structural role in the integrated product and the role of mycelia carriers to ensure a health status is relatively recent and it is the result of accepting the idea that foods play a determining role in the prophylactics and therapy of certain conditions. The paper approaches two main aspects: 1 пїЅ methods of modifying lipids (simple stir, hydrogenation, interesterification, fractio...

The energy sector is an essential component in any nationпїЅs economy and well-being. The security and safety of any energy grid system is nowadays a strongpoint in mid and long term strategies when it comes to national development. Safety and security of energy supply is a multicomponent factor that includes: power generation systems, power transport and distribution systems and consumer management. The power generation units in Romania are very complex and they include different sources like coal, gas, nuclear, ...

Reliability of a concrete pipe culvert was tested under rail and embankment loads. In the finite element model soil-structure interaction and nonlinear behavior of the materials were taken into account. After a preliminary study three influential variables as random were selected for presented approach to probabilistic model, i.e. concrete strength, soil density and its modulus of elasticity. Because various concrete parameters can be easily derived from the compressive strength only this parameter was selected fo...

Fodder yeasts are widely used in animal feeding as a source of protein with high amount of B vitamins. While plant protein is very poor in such amino acids like lysine, methionine, tryptophan, single cell protein contents all complex of essential amino acids. Studies have shown advantages and possibilities of using single cell protein in complex with plant base for animal feeding. Sunflower is being one of the most cultivated agriculture in Russian Federation. Deproteinized sunflower meal is a secondary product of...

The emergence and development of the internal combustion engine began in the 18-th century in England. But the first patent for a piston engine with compression ignition was achieved by Rudolf Diesel in year 1892 [1]. The engine use coal powder as fuel. The most used vegetable oil as a fuel and peanut oil. In the year 1859 in Pennsylvania was first released at the amount of crude oil that has been refined for kerosene and gasoline. Because a large quantity of by-products remained unused, Rudolf Diesel using a frac...

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...

In this paper is developed a model for the wastewater treatment plant (WWTP) in Arad, Romania and are presents the results of the steady-state simulation. The model of the plant was based on the stateпїЅof-the-art Activated Sludge Model No.1 (ASM1). In this paper are describes all the steps required to model a waste water treatment plant. In addition, discuss the major challenges encountered in creating a model. It includes typical model simulations for assessment analysis facility. Modeling of wastewater treatmen...

Costs in mining and extractive enterprises is a critical factor for competitiveness. The reason is enormously expensive equipment and technology associated with this type of business. It is therefore necessary to identify the so-called critical cost type, not only in enterprise but also in the entire industry of the country. Slovak Republic, calculated on an area, belong to one of the world's mining superpowers and take leading positions in mining of selected types of raw materials [6]. Mineral resources are the b...

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 ...

In this article questions of increase in effectiveness of the equipotential method (its adaptation) for a research and monitoring of karst processes are considered. Authors carried out the analysis of the principles of creation of systems of monitoring on the basis of the equipotential method. Mathematical justification of formation of compensation signals for sensitization of the applied equipotential method is given in work. Algorithms of the regression analysis for increase in reaction of system of monitoring t...

The article deals with optimizing CFD model of the gravitational heat pipe to the creation of substitute materials and the optimization of its properties, depending on the actually measured results of the experimental device. Gravitational heat pipe operates on the principle of phase change working fluid (heat transfer fluid). The very principle of heat transfer is based on the theory of evaporation and condensation of the working fluid (heat transfer fluid). Heat pipes are classified according to the method of op...

Renewable energy is playing an important role in the development of any modern country. Numerous renewable energy sources are now harvested on a large scale with the main purpose to reduce the greenhouse gas emissions and diminish the use of fossil fuels. European Union member states agreed to achieve important quotas of renewable energy in their consumption until 2020 in energy and in transportation. Romania has the legislation aligned with the EU directives, therefore the government has issued specific legislati...

The scientific paper deals with the multi-criterion optimization of the teeth that are used on the buckets of bucket wheel excavators. From past theory and practice, it is known that geometry of the tooth greatly influences the cutting parameters and the endurance and the strength of the tooth itself. The dependencies between the cutting forces, the penetrating forces, the specific energy on the rake angle and the relation between this last one and the robustness of the tooth are somewhat contradictory, so in the ...

The aim of the article was to present the possibilities of logistic solutions of management system of mixed waste and segregated waste that can be one coherent system or two parallel systems. The authors of the article attempted to optimize the transport of various waste fractions from their origins and collection to recycling and storage sites. The assumptions and limitations of adopted systems as well as conclusions are presented. Sustainable waste management should follow the hierarchy: waste prevention, reuse ...

The paper deals with optimization of point cloud data processing for surface representation of objects with complicated structure. The model object in our research is represented by a coniferous tree with difficult structure obtained by the method of terrestrial laser scanning. Its precise geometric expression and vector representation is essential and it provides the basis to study the impact of natural conditions to the state and development of the coniferous tree using geographical information systems in the fi...

Alkylphenols (APs) are toxic, xenobiotic substances classified as endocrine disruptors, which have a negative effect on the hormonal system of many organisms including humans. APs are among the ubiquitous environmental contaminants and are frequent contaminants in wastewater. Alkylphenols are starting materials for the production of many surfactants and antioxidant stabilizers used in commercial products like detergents, plastics and textiles. They are used in the synthesis of alkylphenol ethoxylates (APEs) and ar...

The present paper uses microsimulation softs to identify the main problems regarding the speed humps location and proposes some improved solutions, with effects on traffic, pollution and safety. This paper also defines the notion of "speed hump", its main advantages, disadvantages and some implementation requests. The most accessible measures to increase road safety, both in economic and design terms, are the traffic calming measures, such as speed humps in different shapes and sizes, low-price solutions with sati...

Terrestrial Laser Scanning (TLS) in LiDAR technology is a commonly used method in obtaining geometric information about objects. Individual scan stations can be combined into one project using the cloud-to-cloud method or based on targets (chessboards or spheres). Target-based registration with spheres is very convenient because in planar view always circle is visible, no matter of the angle of view. On the other hand, it is inconvenient to use the same size of spheres throughout the project. Large spheres are eas...

The aim of this article is to describe the possibility of increasing the service life of the rod eye on a tilting platform that is used to tilt heavy barrels between the two differences in heights in transport lines. This mode of transport was selected for the lack of space in a given area of a production line, which does not allow the implementation of an inclined plane, which would be structurally easier. Rotating those barrels by 90пїЅ that is achieved during this way of transport, is desired for subsequent tec...

Petroleum and petroleum products hydrocarbons are the most toxic environmental contaminants. Modern detailed analysis of crude oil is needed for assessment, trasological and forensic investigations. Method of gas chromatography with mass spectrometry (GC/MS) is one of the most effective method for the component composition determination in complex mixtures. This paper describes an express developed methodology for determination of fractional and component composition of crude oil and its derivative products пїЅ di...

Cereals and by-products of its processing are known to be applied for lactic acid bacteria fermentation. Wheat grains containing starch, protein and a lot of growth factors seem to be the rich nutrient media for some types of microbes. On the other hand, the niglible number of lactobacilli can produce amylases and proteinases (for native gluten decomposition), so at least the partial hydrolysis of substances mentioned is needed. The complex processing of wheat flour with amylases and proteases was shown to increas...

The annual extraction of aggregates in the Czech Republic is between 45 - 50 mega tones. [5]. Many studies for better results of quarries are undertaken. In this paper is solved the question of optimizing. It is solved the optimizing of cost on coal quarries also. The situation on stone and coal quarries is different. There are requirements for stone production, but the production of coal is in decrement. Comparison and solving both situations seems to be useful. The relationships between different production proc...

The annual extraction of aggregates in the Czech Republic is between 45 - 50 mega tones. [5]. Many studies for better results of quarries are undertaken. In this paper is solved the question of optimizing. The relationships between different production processes in quarries are very important matter. On the relationships between the manufacturing processes depends the economic effect of operation. The paper presents patterns in the organization of mining, which mutually related. Using computational methods and the...

Limestone deposits are primary raw material for cement manufacturing plants. However, mining engineers and geologists faces challenges in determining an appropriate, accurate and cost effective estimation method. The aim of this research is to evaluate and compare the applicability of two geostatistical methods, Ordinary Kriging (OrK) and Inverse Distance Weighting (IDW), for estimating quality of the Ta Thiet limestone, a lithological structure deposit at Binh Phuoc province (Vietnam). For this purpose, data coll...

In the article are given the results of the study of chemical and organic composition of natural waters (bog, river and underground). The samples were collected on territory of the largest bog system in the world пїЅ The Vasyugan bog at the mouth of the rivers Vasyugan and ParabelпїЅ (Tomsk region). It is shown, that for all types of waters are characteristic of increased concentrations of iron (from 1 to 12.5 mg/l) and organic matters (COD from 4 to 30 mg/l), at the same time contents them are directly proportion...

Organization of the Access database of the Kadiica copper deposit Eastern Macedonia represents the first attempt of this paper authors to synthesize geological exploration data of this ore bearing locality in one professional database available for the wider auditorium. Authors experience in organization of similar databases for other metal deposits such are Bucim, Borov Dol, Zletovo, Sasa etc., gave us an opportunity to construct quality Access database for the Kadiica deposit. This deposit is of porphyry type wi...

Research conducted on sterile dumps resulting from surface mining of lignite, have shown that in the waste dump restoration process, the main issues are raised by the non-uniformity of texture, extreme textures, lack of structure, low content of organic matter, the deficiency in macro (NPK) and micro (Cu, Zn, Fe, Mn) nutrients and low biological activity. Most experiments with fertilizers revealed that the maximum yield was achieved in variants fertilized with high doses of organic fertilizers, in addition with mi...

Coworking (also called as пїЅoffice for hours") is a relatively new tool on Polish real estate lease market. This is a solution primarily for people predominately working at home who want to develop their business. The service consists of providing office space equipped with office furniture with internet access and other facilities. The idea of an office for hours is primarily dedicated for freelancers. That kind of solution gives a number of advantages, nevertheless appearing on real estate lease market in many ...

Outsourcing and innovations are very sensitive matters for people dealing with agriculture, especially in the case of farmsteads, which are producing safe food. Food should be same and manageable at the same time. There are currently various definitions of safe food, especially in the case of organic food. In order to fulfil this condition, there is a need for closer co-operation between the farmsteads and the entities in the agricultural sector. As consequence of this approach, the notion of outsourcing is beginn...

The construction of some large industrial units and their endowment with oversized and heavy technological equipments, as well as their regular repair or replacement, led to the necessity of transporting some parts that exceeded both the gauge and the tonnage admitted on public roads. The choice of the route and the transport scheme (on one or more trailers) was made in such a way that requests would be as few as possible in order not to exceed the carrying capacity of the roads and bridges. However, in many cases...

One of the frequent problems that needs to be addressed when mining coal deposits is the presence in the working face of cohesive materials having high mechanical strength in relation to the average rock to be excavated. These are generally called пїЅhard formationsпїЅ or пїЅhard inclusionsпїЅ and are in the form of either continuous layers or boulders. This problem is of particular importance in Europe where lignite deposits are exploited in large opencast mines utilizing Bucket Wheel Excavators (BWEs) as the mai...

Sustainability concerns in Romania dates back over 30 years when they agreed on the need to respond to issues raised inexorable deterioration of the natural environment, prevention of worsening ecological imbalances and ensuring ecological balance on Earth. These concerns marks the moment when humanity implicit authority of the country have begun to recognize that environmental problems are inseparable from the welfare and economic processes in general wastewater treatment plant by growing plants is a natural, ine...

In this work, Electron Paramagnetic Resonance (EPR) as an innovative development route was introduced for the following of heavy crude oil oxidation. Moreover, Differential Scanning Calorimetry (DSC) confirmed results that gained by EPR techniques. Herein, we investigated two heavy crude oils based on temperature-dependence initiation process on the kinetics of LTO in the temperature range from room-temperature to 200пїЅC, in the presence of hydropeoxide as an initiator. Without hydroperoxide, the behavior of two ...

We have collected paleomagnetic samples from Late Devonian (Fammennian) basalts and sedimentary redbeds at the Bykovskaya Straight (in the vicinity of Lena River delta). Most studied samples carried interpretable paleomagnetic signal. Three paleomagnetic components have been isolated: A+AпїЅ, C, and D. The magnetization of the overwhelmed majority of Late Devonian samples from the Bykovskaya Straight has been reset by modern (or Late Cenozoic) geomagnetic field (component A+AпїЅ). The sole site was characterized b...

Palladium is one of the precious metals which have great economic importance. It is used in many fields such as electrical and electronic industries, corrosion resistant materials, and jewelry due to their specific physical and chemical properties, catalysts in various chemical processes. Due to its importance and high price, it is essential to develop efficient recovery methods for this element especially from water containing trace amount of Pd. Therefore in this work we report studies regarding the removal of P...

The reef system (carbonate platform) is a geomorphological barrier and a sedimentary and chemical-biological filter in a directed flow of geo-biosphere processes. To carry out lithological and geochemical reconstructions of these processes, an analysis of the change in oxidation-reduction conditions, climate, intake of organic matter type and mineral composition is required. Increased attention to these carbonate platforms is due to the fact that within their boundaries hydrocarbon deposits are discovered, confine...

In last years, recycling has become a strategic factor in global politics, a vital component and a cost factor for economic development and the progress of society as a whole, generating a number of major global concerns. Exceeding twice the sum of all materials used in construction, annual concrete consumption around the world amounts to approximately 10 trillion tones being by far the most used building material and the partial or total replacement of a component of its mass with recyclable waste has a major pos...

In world, pipe jacking method had a very quick development. In last years there has been seen a tendency in metallic fiber reinforcement. In the first part the paper present o short description of the method and pipes reinforced with metallic fiber. The second part is dedicated to three dimensional numerical analize of pipe jacking method, to define their influence on pipe efforts, with considering the horizontal push force. In the third part are presented parametrical studies on fiber reinforced metal pipes used ...

Conveyor belt loop operates in a system comprising a series of belt segments and the splices between them. Splices are the weakest parts of a loop. Depending on the splicing technology, the spliceпїЅs strength, durability and reliability may vary significantly. Vulcanized splices offer the highest strength and durability. In the case of steel cord belts, such splices are practically the only technology available. In the case of textile belts, adhesive and mechanical splices may also be used. Although mechanical sp...

The authors have revealed particularities in destruction of the rock mass by the system of borehole charges and substantiated the least seismic hazardous blasting schemes which allow decreasing out-contour disturbances and providing more qualitative crushing of rock mass. It has been shown that for the boreholes with 250 mm diameter the least seismic hazardous blasting scheme is one with borehole line placed at the angle of 105пїЅ to the bench wall. At that, the stress level in the out-contour rock mass decreases ...

Urban transit system planning in large cities requires information about demands on passenger transfers. These demands are commonly represented as an origin-destination matrix (O-D matrix) that contains aggregated data of passenger turnover and traffic. Information, needed for these representations to be constructed, is usually collected using analytical models and natural surveys. Unfortunately, these methods do not provide necessary precision for high quality transport system management and are also quite expens...

Rapid urbanization has a great impact on city temperature, which causes urban heat island (UHI) and affecting quality of local people. This study attempts to detect changes in land-use and land surface temperature (LST) over Mueang Chiang Mai District, Thailand. Multi-temporal Landsat TM and ETM+ satellite images acquired in April in 1994, 2004 and 2014 were selected to analyze changes in land-use, land surface temperature (LST) and UHI using object based image analysis method and thermal image processing. Overall...

This article proposes a software tool, based on artificial intelligence technics, to grid operators and energy companies, to optimize the power system. Precisely, it uses pattern recognition capabilities of neural networks, in order to enable a higher share of renewable energy to consumers. The applied analysis on PV power and other related electrical grid data, such as smart energy meter readings, are based on pattern recognition technics. The neural networks used for this approach will identify days of the week ...

Among different methods of oil-crop biomass processing two main reactions are allocated пїЅ oil transesterification with methanol and fatty acid deoxygenation. Last decades there is a growing researcherпїЅs interest to the production of fatty alcohols with carbon number 10-18 by selective hydrogenation of carboxylic group of fatty acids. These alcohols can be used in various fields, e.g. pharmaceutical, cosmetic, fine organic synthesis as well as in biofuel industries. In this work, we propose to use polymeric cat...

Many low grade iron ore deposits which were previously ignored are being treated due to depletion of high grade iron ore deposits. Haematite flotation concentrate from a reverse flotation of fluorspar tailings was characterised and agglomerated using bentonite and coke. The effect of bentonite and coke concentrations on mechanical strength and metallurgical characteristics of the wet and baked pellets was investigated. It was found that the concentrate contained 60.5% Fe, 4.24% silica and other minor elements. Maj...

Thermal comfort is the condition of mind that expresses satisfaction with complex thermal factors. There are three main factors that can affect the human comfort, which must be considered by engineers before designing progressive indoor technologies; effective temperature, relative humidity and air motion. Building occupants are a rich source of information about indoor environmental quality and its effects on comfort and productivity. Subjective evaluation of indoors is an important part of assessing the quality ...

Tsunami is one of the major natural hazards presenting significant flood risk for coastal communities and therefore, increasing the society resilience to this phenomena in exposed areas is very important for minimizing damage and possible destructive effects on the environment in these areas. In the frame of the EC Programme-FP7 ASTARTE project (Assessment, STrategy And Risk reduction for Tsunamis in Europe), we conducted a questionnaire survey among people living, working, or visiting Eforie Nord site. The tsunam...

The performance of investment projects and their impact on the beneficiaries represents a real challenge to the public and private entities, from the perspective of all resources involved and expected results, on all fields. The economic efficiency of investment projects, initially considered, by many others, as one of the main criterion in evaluating projects process, cannot be a real guarantee of performance projects. At present is a need completing the process analysis and with other characteristics such as the...