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The basis for safety management is the assumption that safe conditions as well as safe behaviour at work do not arise spontaneously, but must be worked out according to a pre-approved program. It is known that preventive actions have a much greater importance and sense than the removing of a damage resulting from accidents. Therefore, it is necessary to take measures aimed at improving the working conditions, equipment and conduct of employees hired in the mine. The presented article is an attempt at a practical a...

The customer expects the quality and reliability of purchased devices. Every defect on the device causes loss of brand confidence and customer dissatisfaction. Customer satisfaction is, however, the best indicator of how likely customers will continue to buy in the future. If an organization wants to maintain a customer, it must be customer-oriented. The company has decided to improve the quality and reliability of its products. This can also help to increase the number of satisfied customers and gain competitive ...

The research and development activity is becoming increasingly important in the current economic context. The emergences of new products, increasing the share of a saturated market or even entering a new market are now based on a research and development activity. The amounts allocated for this activity must be in line with the objectives set by manufacturers in the building materials industry in Europe. For them it is very important to increase their turnover, but they also seek to increase their notoriety, in ad...

Provides information about the most common raw material reserves of wild medicinal plants containing tannin on the ridges of the southern Altai, such as Achillea millefolium L., Bergenia crassifolia (L.) Fritsch, Ephedra equisetina Bunge, Filipendula ulmaria (L.) Maxim., Glycyrrhiza uralensis Fisch, Sanguisorba officinalis L., Tanacetum vulgare L. and others. Among all medicinal plants Chamaenerion angustifolium (L.) Scop., applies only in traditional medicine. The amount of the operational reserve and the amount ...

Polycrystalline hypoeutectoid aluminum bronze was fabricated by melting of pure metals technique in an induction furnace. Cu-Al-Ni alloy was investigated in cast state and after hot extrusion. Moreover, thermomechanical treatments was conducted via torsion tests between room temperature and 9000C. The research focused to investigate the factors influencing the deformation behaviour, mechanical properties and microstructural evolution of a Cu-Al-Ni alloy. Mechanical characterization showed that upon extrusion and t...

The fast development in chromatography occurred in the middle of twentieth century when gas chromatography came to light. It was invented by James and Martin. Presently, gas chromatography coupled with universal or selective detectors including mass selective detector is an effective, powerful and versatile analytical tool for special cases. It can be applied in numerous fields for example in drugs and pharmaceuticals, clinical chemistry, foods, environmental analysis or petroleum industry. Gas chromatography can ...

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 ...

The article analyzes how the main factors influence the competitiveness of the economy. In constructing the model, three assumptions are introduced: a) there is a prehistory of the process, i.e. the variables that evaluate the competitiveness of the economy at the time t, also affect the values of previous periods; b) there is a mutual influence (interdependence) between the variables that evaluate the competitiveness of the economy; c) the variables that evaluate the competitiveness of the economy are influenced ...

From the glacial deposits moraines are the most heterogeneous and complex. Moraine - complex bodies, consisting of fragments, previously carried along by a glacier and normally consist of somewhat rounded particles ranging in size from large boulders to minute glacial flour. The article studies the difference in moraine composition in Central Karelia and the Murmansk region. The complexity of moraine development with the help of construction equipment for the purposes of road construction is considered. The first ...

The problem of optimization of design and regime parameters of PSA unit?s operation with regard to an economic criterion (total costs, profit, etc.) and fulfillment of design and technologicalechnologicalechnological echnologicalechnologicalechnologicalechnological constraints on the process (purity of the concentrated gas (hydrogen, oxygen), on PSA unit capacity, energy- and resource-saving, etc.) is formulated and solved. The problem?s formulation takes into account: 1) the uncertainty (inaccuracy) of the initia...

Out of allbroad-leavedspeciesthat are to be found in our woods, ash trees have a special importance throughboththe great value of the wood andthe cultural qualities.The imbalancesin forest ecosystems due to the influenceof some climatic and anthropic factors havematerialized in the occurrence of some gradations of defoliationinsects, among themStereonychus fraxiniDe Geer, 1775.In the last few years the ash tree stands were increasinglyaffected, which requiredeven more careful preoccupation withthe prevention and c...

Cadastral maps are essential component of cadastral documentation. They are heterogeneous from many points of view and have several dissimilarities and imperfections. Only one half of them has been created in actual mapping campaign, thus with quality criteria which are sufficient for current requirement of modern society. The fact, that maps are in vector form, does not guarantee their accuracy and quality. The user must be extremely cautious when a digital image of the map is interpreted. The advances in technol...

The main factor of effective biological waste water treatment and pollutants biotransformation is correlation between different nitrogen forms in the media. The waste water specimens were obtained from the pulp and paper mill of the Russian North involving BAS-technology. Concentration of ammonium ions in wastewater was carried out on a spectrophotometer by Sedji-Solorzano method using phenol-hypochlorite reaction. Nitrite ions were determined colorimetrically by diazotization with sulfanilamide and subsequent cou...

Because of the hydrocarbon reserves reducing from traditional reservoirs in Russia, much attention is paid now to unconventional resources, such as the Domanik oil shales of the Volga?Ural Basin. The Domanik deposits consist of siliceous-clay-carbonate rocks enriched with organic matter and other components of oil in the dispersed state. They are Middle Frasnian source rocks and have low porosity and permeability. Domanik shales contains many oil occurrences and rare fields, which is primarily explained by the abs...

The article is devoted to ergatic systems for training skills of handling breathing apparatus (mine self-rescuer) for staff protection in emergency situations. These systems represent hardware-software systems for simulation of physical activity, emergency situations and monitoring the status of a trainee. These tasks are interrelated and must be solved simultaneously in real time to ensure training process. The joint solution of these tasks implies the need to process large amounts of data within short time inter...

The development and implementation of new technologies can generate many effects for the economy, the quality of environment and human life. For that reason, when a decision about using new or developing already functioning technologies is made, the Sustainability Assessment of the Technology (SAT) should be carried out. The methodology of assessing social impacts is worst developed compared with assessment of economic and environmental impacts, so there is still need to find appropriate indicators and methods for...

The crystalline basement of the Tatar arch is composed of metamorphic rocks. Locally, areas within its boundaries are composed of magmatic rocks. According to the data of our studies, it is known that within the basement permeable zones are developed, which we attribute to unconventional types of reservoirs. One such object is the hypabyssal rocks, which are alternated by rocks of the gabbro-diabase formation. Based on the results of studying geological-geophysical and core materials of individual areas, in partic...

Bioluminescence field in the Black Sea is formed mainly by accumulations of luminous dinoflagellates, which along with other microalgae are an important component of marine ecosystems. The study of bioluminescence field variability, which reflects the structural and functional parameters of phytoplankton, redounds to a more detailed insight into its spatial and temporal heterogeneity. The article presents the analysis of bioluminescence field structure, measured in five marine expeditions onboard the research vess...

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...

The role of sulfur gas of intense volcanic exhalations is considered as an important source of sulfur in sedimentation basins and as a probable cause of alterations and crises in the Mesozoic ecosystems. In the work sedimentary deposits of different ages and genesis are analyzed, presented in the form of lithological columns with detailed paleontological, mineralogical and geochemical characteristics. The levels in the sections enriched with pyroclastics are compared with the changes in the taxonomic composition o...

The study aims to present the interspecific relationships between fish and cormorants from Comana Pond and Putu-Greci ponds. Also, it is presented the dynamic of the ichtyofauna, during 2011-2017 years, in Comana Nature Park, on the watercourses of the Neajlov River, Comana Pond or Neajlov Delta, Gurbanu River and Putu-Greci Ponds. The Comana Pond, with area of 1200 hectares, in 2011 suffered a major intervention on the habitat characteristic of wetland, namely an ecological reconstruction, by constructing a low-r...

Appropriate protection of the environment, as well as of the most vulnerable environmental factor, water, is impossible without the achievement of a civilization's progress in all its aspects (economic, social, etc.). Also, the lack of adequate economic support may lead to the impossibility of carrying out actions to protect and conserve water resources. Activities from eastern part of the Jiu Valley, constituted as integrated parts of economic growth and development, invariably degrade, through the specificity of...

The paper deals with burning processes, combustible materials and materials. Each fire is accompanied by combustion processes that depend on combustion conditions, in particular the presence of flammable substances and materials, oxidant and source of initiation. Fire is burning spreading uncontrollably in time and space. Fever represents a set of exothermic physicochemical events, in which the redox reactions occurring in the release of a considerable amount of thermal and light energy, at the same time release f...

One of the results of increasingly intensive development of subsurface resources is a global change in ecological and geodynamic safety of the natural environment. It is known that intensive extraction of minerals has led to the change on the subsoil and, as a consequence, to the redistribution of the deformed state of very significant volumes of rock mass with adverse consequences for the environment. For this reason, in many deposit fields geodynamic monitoring is actively carried out using ground-based technolo...

It is necessary to determine the amount of starch in order to find effective methods of controlling it in technological flows of paper mills. Enzymatic methods for starch determination based on the selective action of amylolytic enzymes on starch are promising. Water-soluble low molecular weight dextrins are formed when starch is treated with alpha-amylase. Dextrins are then hydrolyzed by glucoamylase to glucose, which is determined by various methods. Material pre-treatment is necessary to increase starch availab...

Sources of magnetic field are often approximated by dipoles or current loops, however it this work they are approximated by magnetized prisms instead, which is possible due to equivalency between magnetized objects and currents. Distribution of effective magnetization is then obtained by solving inverse magnetometry problem using the adaptive method of refining the unknown values based on discrepancy between initial values and model values. Z-components of Earth?s magnetic field in IGRF-2005 model in geocentric co...

This article presents an approach for managing and comparing data, concerning some main food products in Bulgaria. The source for the search of these product categories (bakery products, milk and milk products, fish and fish products and etc.) is the created relational database. The extracted data for the selected category have been grouped, compared and processed. The obtained results enable the user to present relevant conclusions for the examined time interval. This approach is applied to the data on bread and ...

This paper deals with the evaluation of the hydrogeological hazard in the archaeological site of Castelseprio (northern Italy). Based on the geological, hydrogeological and geomorphological setting of the site, the failure modes and their causative factors were identified, and a proper conceptual model was reconstructed, identifying piping processes as the main phenomena ruling the slopes evolution and the landslides triggering. Afterwards, the hydrogeological hazard was assessed applying numerical modelling both ...

Paleosol profiles from the reference section of the Urzhumian stage of Middle Permian in the Cheremushka Ravine, the Kazan Volga region, were studied in order to detail the paleogeographic and palaeoclimatic conditions. Field and laboratory methods, including grain size analysis, optical microscopy, X-ray fluorescence of siliciclastics, X-ray diffraction of clayey component, were used. Urzhumian succession of 70 m thick is represented by red-bed fluvial-lacustrine deposits with predominance of mudstones. The upper...

Interpretation of geophysical data is an important stage at a research of interior of Earth and problem solving of a prospecting geophysics. Potential geophysical fields ? gravitational, magnetic, stationary thermal ? satisfy to the equation of Laplace. Therefore, the theory and methods of interpretation developed for one of this field have the universal character. At the same time, it is necessary for these problems solution to use results of interpretation other geophysical data, first of all, seismic data. Proc...

Application of geophysical methods when purposefully deployed, is an efficient tool for getting excellent information while resolving many tasks in various disciplines. The article is about utilisation of data gained by deploying electrical resistivity tomography while resolving stability of non-stable rock block. In this case the task of the mine meter was to calculate volume of eroded rock in discussed rock massif. Information of geophysical measurement by non-traditional method were used. In this case are resul...

History of water supply and sewerage systems dates back to ancient times, since water is a scarce resource needed for life. Worldwide, it is possible to find the remains of various drinking water pipelines. Various ways of dealing with wastewater are also documented. This article deals with water management in the Czech Republic area. The topicality of the text is supported by the fact that not all residents in the Czech Republic are currently supplied by drinking water from public water systems and the proportion...

Machine learning covers a wide set of supervised and unsupervised algorithms for solving prediction, classification and anomaly detection problems. One of the areas of their applications is for customer churn prediction. To build a model for predicting the switching of customers, data scientists use different demographics, social, transactional, behavioural metrics and features. At the same time, most of the small Bulgarian companies still don?t have the needed versatile and complete customer data. They rely mainl...

Nowadays the concepts of environmental ethics and environmental responsibility are mentioned more and more frequently in relation to the performance of companies. These notions can relate either to a person or to a company. Being environmentally responsible entails fulfilling one?s duty to protect the environment. Companies whose activities do harm to the environment should carry out this duty. The aim of this research is to teach students specialising in oil and gas engineering how to assess a company?s corporate...

Together with clay and rocks, wood represents the oldest building material, used for developing the overall infrastructure, namely civil structures, road and bridge elements. Its use as critical building material is still wide spread worldwide, due to intrinsic qualities of wood as building material and also due to its availability, being generously offered by nature. Romania, despite of huge lacks of legislation and practical protection of forests and wood as strategic resource, still has important, high quality,...

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 recovery factor of gas reservoirs is highly dependent on various factors such as the type of drive mechanism, the initial reservoir pressure and the abandonment pressure. A higher attention is required to enhance gas recovery from reservoirs associated with water influx. Exploitation of this type of reservoirs represents a challenge for production operators in the sense that they have to find viable technical and economic solutions in order to increase the gas recovery of reserves. The selection process for th...

The Innovative Industry strategy of EU reinforces the role of Public Private Partnerships to focus on key technologies and their implementation through federated projects. The European Commission has made large investments into Public Private Partnerships to enable a long-term, strategic approach to innovation, research and development, as well as to reduce uncertainties by allowing for long-term commitments. Taking into account the European experience, the article analyzes the feasibility, possibilities and direc...

The present paper demonstrates capabilities of flicker-noise spectroscopy (FNS) as a phenomenological approach to the analysis of astrophysical objects? time signals using an example of the study of quasars radio-wave radiation dynamics in various frequency ranges (S band (2 GHz) and X band (8 GHz)). The promise of FNS application to the study of signals generated by accreting astrophysical objects is caused by inclusion of informational parameters characterizing the components of time sequences in various frequen...

This article was created as a result of research conducted within the master thesis. The purpose of the research was to analyze the accuracy of determining the actual position of the photographed points according to the calculated parameters. The accuracy of photos alignment was determined as parameters, which determine their external and internal orientation. In order to determine the location of the determined points, it was decided to follow the photogrammetric resection rule. In order to automate the measureme...

The waste water from the food industry consist of waters of transport and washing of the raw material, technological waters, the condensation or water cooling system, waters resulting from washing and disinfecting rooms of manufacture, machinery and packaging, waters of sanitary facilities. These contain significant quantities of solid residues, represented by the scrap of raw materials, discarded products, unusable tailings from products, etc. The waste waters from the food industry is characterized by a high con...

Dill (Anethum graveolens), a condimentary and aromatic plant belonging to the Apiaceae family is widely used in the food industry due to its preservative and functional properties. Current study aimed to obtain ethanolic extracts of Anethum graveolens (seeds and fresh leaves) and to investigate these plant parts for their antioxidant activity (AA), total phenolics content (TPC) and profile of individual polyphenols, including: caffeic, ferulic, coumaric, rosmarinic, gallic, protocatechuic acids, rutin, resveratrol...

The paper consider the impact of the view on petroleum origin on the strugegy its exploration. The petroleum is complex, natural Self-organizing system. Its genesis, migration and accumulation in a pool is discrete process not associated with Biosphere matter and energy. Hydrocarbon (HC) molecules are generating during their migration thought Lithosphere layers under catalytic interaction with their selves and rocks. The structure and composition of the HC molecules different type appearing during the stages of th...

Following socio-economic changes in Central Eastern Europe, the areas located near water bodies have changed, on a massive scale, their character from that of agricultural areas to that of areas developed with holiday buildings. These changes occur very rapidly, with no opportunity for municipalities to prepare comprehensive area development plans. Cadastral divisions performed to satisfy the new owners? needs do not ensure the sustainable development spaces that are particularly attractive in terms of recreation,...

In the recent years, growing interest to biochar as a means of improving soil quality is observed. Biochar is a product of pyrolysis of biomass such as plant residues or organic wastes. Biochars made of manures are special because they can solve two environmental problems simultaneously ? waste reduction and soil fertilization, but they are less studied. In our research, we suggest to improve the properties of biochars derived from manures by means of immobilizing beneficial microbes on them. In this study, the ch...

The development of methods for automatic preprocessing of observational data of small-aperture seismic arrays that precede the detection and identification of seismic events by the method of waveform cross-correlation is considered. Preprocessing is based on adaptive channel selection. The methods developed by us provide for the calculation of the quality metrics of the seismic channel by means of spectral and amplitude analysis of records. The selection of channels is based on the correspondence of the quality of...

For Romanian agriculture is essential to promote products based on natural extracts. Seaweeds extracts, humic acids, and other natural compounded often enhancing growth, development, abiotic stress tolerance or ability to tolerate plant disease. Many articles show results of using seaweed extracts as biostimulants to improve tolerance to drought or salinity. Most products are extracted from marine algae belonging to the Ascophyllum nodosum species. In our research, we tested the role of SuperFifty® 0-0-8 in reduci...

The assessment of explosion-protected electrical equipment is based on the requirements of the ATEX 2014/34 / EU Directive through tests and verifications carried out according to harmonized standards (SR EN 60079-0) and the standard for the type of protection of the equipment) which include requirements for protection of equipment by flameproof enclosure. Assessment of explosion-protected electrical equipment is carried out under the provisions of the ATEX Directive 2014/34 / EU through tests and checks carried o...

The use and maintenance of underground spaces in bedrock, e.g. those formed upon the completion of mining operations, often gives rise to discussion of other uses of remaining tunneling systems. Filling tunnels with rock blocks, concrete and groundwater is not always an optimum decision because this environmentally controlled work requires funding. Another option is to establish underground laboratories (UL?s) at these locations and to use underground spaces for non-quarrying purposes. However, the transition of s...

Woodworking hand tools have served as the basis for further development of the woodworking manufacturing. Even in nowadays woodworking hand tools are widely used in wood crafting. Besides they are used in manufacturing too, to complete some operations of wood technological processing without electrical hand tools and wood working machines. The aim of the research is to create structure scheme subdividing the woodworking cutting hand tools, which provides cutting as a main function of tool, in main and subgroups wi...