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The article presents research on the capacity of Polish mining enterprises to introduce organizational changes. The main difficulties, which are problems arising in the introduction of changes in enterprises are primarily generated by the human factor. Moreover, the efficiency of the organization during the process of change depends largely on the productivity of employees. Therefore, our change management research focuses to the greatest extent on the situation of people in the organization. The authors carried o...

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...

Natural disturbance regimes play key roles in shaping forest structure and development at stand and landscape levels. Disturbances are complex and variable, such that classical dichotomous characterization of disturbance regimes as following large infrequent disturbances or patch dynamics is too simplistic, especially when the resulting damage is more severe than the baseline of a single tree patch dynamic, but not severe enough to represent large infrequent disturbance. Ongoing climate change affects mountain Pic...

The paper is focused on manifestations of chaotic behavior in the time series of pollution concentration. Deterministic chaos denotes a type of complex behavior of a deterministic dynamical system. The most important algorithms for data representation, prediction, phase space reconstruction, dimension, entropies, persistence and Lyapunov estimation are applicate here. At first we estimated the time delay and the embedding dimension, which is needed for the Lyapunov exponent estimation and for the phase space recon...

Energy policy of the European Union aims to move towards the sustainable and green energetics, therefore, identification and exploitation of renewable energy resources is of high importance in all EU member states. One of the types of renewable energy production is cogeneration of heat and power from biomass. Cogeneration becomes more and more topical in the Baltic States as various kinds of biomass, e.g., forestry and agriculture residues, cultivated plants for biomass are rather easy obtainable. For example, in ...

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...

Mineral processing products must be verified in order to develop highly effective technology of enrichment. At every stage of mineral processing - improvement is possible through monitoring and verification of the components of processes. Process control is possible, among others, through comprehensive mineralogical analyzes of ores and products of their processing. Automated mineralogy based on scanning electron microscopy technique, like QEMSCANВ® or MLA, gives opportunity to obtain complex data in a relatively ...

Cabernet Sauvignon variety is one of the most widespread grapes varieties for winemaking grown in Romania. By application of clonal selection, five clones of Cabernet Sauvignon have been obtained and omologated in Romania. The present study aimed to characterize the quality of wines obtained from three Cabernet Sauvignon clones, namely Cabernet Sauvignon 30 Vl., 131 St. and 54 Mn. in the Valea Calugareasca viticultural area, considering the extension of their culture and market potential. The experiments were carr...

Cabernet Sauvignon variety is one of the most widespread grapes varieties for winemaking grown in Romania. By application of clonal selection, five clones of Cabernet Sauvignon have been obtained and omologated in Romania. The present study aimed to characterize the quality of wines obtained from three Cabernet Sauvignon clones, namely Cabernet Sauvignon 30 Vl., 131 St. and 54 Mn. in the Valea Calugareasca viticultural area, considering the extension of their culture and market potential. The experiments were carr...

According to FAO, the Food and Agriculture Organization of the United Nations, global annual charcoal production amounts to 52 million metric tons. Around half of the population in South America depends on forest-sourced resources (firewood, charcoal) to cover their basic energy needs, and in some countries large-scale industrial charcoal usage is further common, e.g. in Brazil in the production of pig iron for steel. To limit adverse impacts on forest health, sustainability of charcoal production merits high atte...

The undesired effects generated by the usage of synthetic antioxidants in foodstuffs increase the interest of food producers and customers in the finding of new food additives of natural origin. The chemical composition and antioxidant potentials of Anethum graveolens L. essential oil of were investigated in this study. The isolation of essential oil was conducted by steam distillation with a yield of 1.83% (v/m). The material used for extraction was dill seeds (natural dried product). Gas chromatography coupled w...

The undesired effects generated by the usage of synthetic antioxidants in foodstuffs increase the interest of food producers and customers in the finding of new food additives of natural origin. The chemical composition and antioxidant potentials of Anethum graveolens L. essential oil of were investigated in this study. The isolation of essential oil was conducted by steam distillation with a yield of 1.83% (v/m). The material used for extraction was dill seeds (natural dried product). Gas chromatography coupled w...

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...

Gas hydrates have been represented as a promise technology for many of applications, as gas mixtures separation, CO2 capture, transportation, and sequestration, transport and storage of methane, and seawater desalination. Reduction of onset temperature/time for hydrate formation and increasing the hydrate growth rate are very critical for these applications. In this study for the first time we want to introduce the application of gelatin as a cheap, biodegradable, sustainable and effective promoter for methane hyd...

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 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...

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...

It is well documented that the interlayer space of clay minerals, notably smectites (e.g., montmorillonite), can be intercalated with wide variety of inorganic cations or organic cations through ion exchange reactions or using other physical and chemical means of interaction. When the modification of smectite is performed with organic cations, their properties change from hydrophilic to hydrophobic. Therefore, the resulting materials become efficient sorbents of organic contaminants in wastewater, e.g., as sorbing...

Forests are the national wealth of Latvia that is to be preserved and multiplied to meet the ecological, economic and social needs of society. Latvian residents with the forest has always linked the economic, cultural and emotional bonds that have developed over centuries. Forest performs essential ecological and social functions at both national and international level, and providing adequate growing and cutting stock measurements, we can estimate different growth factor influence. Historically this data delivere...

The Ob and the Lena Rivers are considered in the research. They are two biggest rivers of Russian Arctic and have the annual runoff 405 and 530 km3/year correspondingly. Analyse of multiyear data of Russian Hydrometeorological Survey (Roshydromet) and own measurements in the mouths areas allow to describe a tendency of water resource and water quality development in these regions according to climate change and human impact. Long-term river runoff and concentration of major and trace elements in water have been co...

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...

Soils can be defined as four dimensional natural bodies, where the lithosphere, the atmosphere, the hydrosphere and the biosphere are soil ? forming factors which operate in geological time. The soil profile reflects the climate change passed during soil ? forming process. The majority actual soils are the result of a polyphasic soil development, therefore they involve in their age the climate existing in the Tertiary, especially in the Quaternary, period. Climate change is expected to have several effects on soil...

Climate change is reflected in the horizontal and vertical structure of vegetation cover, species composition, and bio-productivity changes as well as on the changes of carbon cycles. Landscape studies and revealing of climate changes in different landscapes are especially relevant for the countries/regions that on the one hand stand forward with high natural potential, on the other hand keen ecological problems distinguishes them. Among them is Samtkhe-Javakheti ? one of the region of Georgia. The research is bas...

Carbon capture storage (CCS) technology is expected to help reduce the anthropogenic carbon dioxide emissions, however, application requires finding the rock formations with sufficiently large storage capacities. Water-bearing formation allow to store a high-volume CO2. Nevertheless, the assessment of the capacity of aquifers structures remains a problem. In this work reservoir simulation was developed to estimate CO2-storage capacity because it allowed to take into account the effect of heterogeneity in an aquife...

The study of coagulation behaviour of bentonite clay suspensions is presented in this paper. Experimental results were obtained by investigation of several chemical and physical properties of two bentonite suspensions. The study included several measurements such as particle size distributions, chemical and phase analysis of prepared suspensions, as well as preparation of sedimentation graphs and the relationship between concentration of the suspension and turbidity. The results of this research could help in dete...

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 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...

One of the directions of the rational use of the secondary raw materials of meat industry, including collagen-containing, is its modification in order to obtain protein products enriched with micronutrients for the further use in food production. The presence of active carboxyl end groups in the collagen molecule and complex spatial structure cause the complexation of this protein with various minor nutrients, thereby promoting the creation of a biologically active composite for the enrichment of meat products. Th...

One of the directions of the rational use of the secondary raw materials of meat industry, including collagen-containing, is its modification in order to obtain protein products enriched with micronutrients for the further use in food production. The presence of active carboxyl end groups in the collagen molecule and complex spatial structure cause the complexation of this protein with various minor nutrients, thereby promoting the creation of a biologically active composite for the enrichment of meat products. Th...

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...

Pyrolysis is considered as an effective and alternative way to treat organic waste and to obtain pyrolysis fuels as well as biochar. The latter may be used for different purposes in industry and agriculture, including use as a long term fertilizer. Biochar, after pyrolysis, is obtained in the form of powder; however from practical point of view it is better to use pelleted or granulated biochar since it significantly enhances biochar?s filed distribution. In our study we compared the efficacy of granulated and pow...

Pyrolysis is considered as an effective and alternative way to treat organic waste and to obtain pyrolysis fuels as well as biochar. The latter may be used for different purposes in industry and agriculture, including use as a long term fertilizer. Biochar, after pyrolysis, is obtained in the form of powder; however from practical point of view it is better to use pelleted or granulated biochar since it significantly enhances biochar?s filed distribution. In our study we compared the efficacy of granulated and pow...

Production of electricity in power plants using steam-driven turbines represents today and will continue to remain for decades the main source of such energy, regardless of the fuel consumption type: fossil or nuclear. Even some types of power plants using renewable energy, such as solar energy, transform it first into steam energy. Considering that nowadays about 80% of total world electrical energy is produced by power plants that use steam energy, it is very important that the efficiency and reliability of esse...

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...

Cogeneration, or combined heat and power production (CHP), delivers both electricity and heat simultaneously, which achieves high overall energy efficiency. Although CHP technologies are state of the art, and advantages of their adoption are well known, 70% (European Union) to 80% (worldwide) of the existing potential remains untapped. Initiatives fostering more widespread uptake of cogeneration so far often focus on large scale electricity supply schemes combined with the operation of district heating, while the ...

In the near future, all new buildings across European Union will have to meet the nearly Zero Energy Buildings requirements, namely to have a lower primary energy consumption and lower carbon dioxide emissions. In this regard, each country set its own targets concerning the reduction of these values. The paper presents a computational study regarding the thermal performances of an apartment, insulated in the first case scenario with a common solution such as expanded polystyrene and for the second and third case s...

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...

Agricultural production as a share of gross domestic product in Latvia in the year 2016 was 3.2%, which was 1.5% more than in 2015. In 2016, the sown area of cereals amounted to 716.0 thousand hectares, which was about 43.6 thousand hectares or 6.3% more than in 2015 [1]. This indicates the development of the agricultural sector, which will require production resources, as well as appropriate technology machinery to be available. The agricultural sector has to be seen in the context of rural development, where the...

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 ...

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...

Technical progress in the field of 3D modelling resulted in increasing use of such technics to create a virtual 3D models of objects. Three-dimensional spatial models are used in a wide range of applications such as inventorisation of architecturalconstruction, an inventorisation of archaeological sites, medicine and wide-known engineering. Spatial models are created based on the point clouds acquired with laser scanners or photogrammetry. Each of these data acquiring methods has its advantages, limitations and ac...

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...

In the paper, the comparative analysis of results of the research concerning energy con-sumption of separation process and influence of operational parameters is presented. Results are acquired basing on experimental and computational research. Scope of the analysis is stated within cascade system with lack of gas recirculation and membrane system with gas recirculation. Investigation is performed using UBE NM-BO2A capil-lary polymer membrane. In the paper, operational characteristics of compared systems, obtained...

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...

An actual problem of the bread making industry is represented by the final properties of the desired product. This fact requires a well knowledge of the technological process, the properties of the flour used, the proportions and the dough mixing method, factors that contribute to the desirable properties of the final products. This study aims at comparing the two basic methods of dough obtaining ? the direct method and the indirect method, with direct reference to the dough improved with lentil flour in addition ...