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The water pollution caused by nutrients has become a problem, especially in agricultural areas. Nitrogen (N) and phosphorus (P) can cause the eutrophication of surface waters, and problems with their use as drinking water sources. One of the possible solutions is to employ denitrifying bioreactors, which are used for the reduction of high nitrate concentrations in shallow groundwaters. Our research was focused on the enhancement of these bioreactors with steel byproducts. These materials release Fe, which causes t...

Photovoltaic energy systems are an important part of the systems for obtaining energy from renewable sources. Generating electricity from renewable sources is becoming more developed in most countries. The energy produced is fed into the power grid and used both for household as well for industrial. Issues related to pollution and global warming have led to more pronounced development of technologies for producing electricity from wind, solar, hydro, biomass and geothermal. Development and the continuous research ...

The article presents results of studies of physical and chemical features of accessory minerals (zircon, apatite) of Medvedev, Yukhta and Dzheltula Mesozoic alkaline massifs. The studied massifs are located within the Aldan-Stanovoy shield of the North-Asian craton. In the Mesozoic epoch, this area underwent tectono-magmatic activization, which caused formation of many deposits, including such unique ones as gold-uranium Elkonskoe, gold ? Lebedinskoe, Kuranakhskoe. Study of typomorphic features of zircons and apat...

Toxic metal pollution of waste waters and soils is a major environmental problem, and most conventional remediation approaches do not provide acceptable solutions. The new technologies, phytoextraction, phytoaccumulation, and phytostabilization, make it possible to achieve an effective in-situ reduction of toxic load, especially by choosing suitable plants that have the desired properties. From the rhizosphere of ruderal plants growing on the decontamination area of industrial waste in Ostrava, bacteria with presu...

The aim of the conducted research was to obtain an answer to the question: how can the residents? quality of life with significant city air pollution be improved? Activities aimed at this objective are inscribed in the idea of "smart city". Unfortunately, many Polish cities are currently struggling with low-emission air pollution. The article presents the results of pilot toxic gases measurements contamination in Zabrze, the city in the Silesian agglomeration (Poland). Measurements of gaseous pollutants were carri...

As it is known from literary sources among environmental polluting agents, environmental pollution with heavy metals influences the most negatively at alive biological systems and human health. It was discovered that the plants express selective sensitivity to heavy metals. Our goal was to study such important pollution agents of environment as heavy metals (Pb, Cd, Cu). As it is known the pollen is a male gametophyte, the biological function of which is to participate in pollination process. It was discovered tha...

Seaweed extracts have many uses. Growth stimulation results obtained from different plant species are mentioned. Also, algae extracts are used to reduce biotic and abiotic stress. Salt stress is one of the most important factors decreasing the productivity of plants. High soil salinity can have a negative effect on major physiological processes. In our work, we investigated the response of Phaseolus vulgaris L. cv. ?Berggold? plants treated with SuperFifty solution (1:1000 and 5:1000), under salt stress conditions...

For produce electricity from solar energy, it would be necessary for an inverter to convert the continuu current (DC) into alternating current (AC). The inverter is the cause of problems affecting the stability of the power supply system because it is a switching device used to adjust the AC frequency as required. At the same time, it can cause harmonics that result in waveform distortions and affect electronic devices that receive energy. Then it could cause malfunction of the electronic device. In this paper, we...

In the tasks of managing energy resources and energy conservation, it is necessary to forecast the consumption of energy resources for a long period, with the detailed speci-fication of consumption over time intervals. A special case of such a task is the determi-nation of the annual consumption of energy resources and its division into monthly con-sumption, taking into account the changes in climatic conditions, the operating condi-tions of objects and other factors [1-2]. The paper suggests a method for predicti...

Recently, Russian oil companies in oil fields are working on clarifying the "old" and identifying new geological structures discovered by the results of seismic exploration. This is due to the fact that oil reserves in both clastic and carbonate rocks with high and medium porosity have almost completely been developed. To clarify the "new" geological structures and revaluation of oil reserves, seismic models are being built. Modeling of elastic rock properties (Rock Physics) allows to link their reservoir properti...

An exceptional occurrence can generally be regarded as a manifestation of risk. In order to handle it, it is necessary to have sufficient amount of information about the risk itself as well as about potential sources and means to deal with the situation it evokes and the preparedness of citizens. In Slovakia, it is mainly the risks of natural character which are, for the purposes of crisis management, evaluated based on a methodology from the year 1994. The ever-extending list of potential risks leads to the need ...

In modern Russia, geotourism activity is not paid enough attention, there are no regulatory base, the generally accepted system of concepts and terms, a single classification of geological and mining tourism resources. The value of the mining heritage objects in the total assessment of the tourist and recreational potential of the territories is understated, they are not always taken into account in the schemes of recreational zoning. The problems of development of geotourism are considered on the example of the N...

Temporary condition of water resources in the world, the prospects for their security of countries are a matter concern. The world situation with water resource is clearly not satisfactory and remains disturbing in general. In many regions there is co-quantitative depletion of water resources, their deficit becomes increasingly stressful. It is given the modern availability of fresh water in Europe. Russia occupies a leading position according to the total volume of freshwater. However, it is experienced a signifi...

The study of the relief transformations caused by human activities is one of the most important problems of modern geomorphological studies. The study of the anthropogenic impact on the nature and relief in particular and forecast of changes is particularly important in solving the problems of the economics and sustainable development of the country what is to be considered in complex with the problems of environmental protection and rational use of natural resources. The human activities during the underground mi...

The article concerns the problems occurring in the course of modelling risk areas in the course of hazardous substances propagation. Defining risk areas is a task of the utmost importance with respect to the safety of human lives. Modelling of explosion risk areas is not easy, particularly because we consider a situation in which significant amounts of hazardous substances are released. However, in order to define such conditions, a series of factors affecting the modelling of risky situations were presented in th...

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...

The international conventions regarding the climate change, namely the Kyoto Protocol and the Paris Agreement, include the recommendations for international organisations that are responsible for the supervision over the transportation other than land transport. The recommendations refer to the efforts of these branches of the economy to reduce global CO2 emissions. It has been assessed that the maritime transport is the source of around 800 Mt of CO2 per year emitted to the atmosphere. Given the forecast regardin...

The effect of K2CO3, K3PO4 Na2CO3, and Na3PO4 on transesterification of rapeseed oil (RO) with methanol was investigated to evaluate their potential for application as biodiesel production catalysts. All anhydrous alkaline salts catalyze transesterification reaction. Higher yield than 95% of rapeseed oil methyl esters (RFAME) was attained in the reaction time from 10 to 300 min. Potassium salts have significantly higher catalytic performance than Na2CO3 and Na3PO4. However, potassium salt recovery from reaction mi...

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...

This article is referring to an analysis regarding the project management of a big size energy efficient commercial building in Romania. There is made a project management analysis status for the construction building project, according to its approved design for the execution. After that, there is shown the project management status analysis for the first operational year, right after the end of the building construction. There are presented the main aspects of the project management tasks for the developed comme...

In recent years, bio-economics and alternative energy sources have become increasingly important in the economic environment of the European Union. The reasons for this development are not only environmental, but also economic benefits. The Union is seeking to increase investment in alternative energy sources, thereby promoting sustainable development, new jobs and the circular economy. Alternative energy sources, also known as renewable energy are inexhaustible sources of energy that do not pollute the environmen...

This paper presents and supports a speculative hypothesis, the essence of which follows. When continental margins in zones of convergence are buried beneath thrust sheets, fluids expelled from the margin sediments travel into the foreland basin and the continental interior. These tectonic fluids have key roles in phenomena such as faulting, magma generation, migration of hydrocarbons, transport of minerals and metamorphism. The thrust sheet, crudely speaking, acts like a great squeegee, driving fluids ahead of it ...

To improve the technology of opening and development of oil fields for increasing the completeness of subsoil use, the prospects of using the electric pulse method of drilling are discussed. Validated the concept of creating an electric pulse tunnel system based on submersible source of high-voltage pulses with controllable formation of work space for increasing its maneuverability and creating special technological outputs in a rock mass for forming a cluster of slant and horizontal boreholes with most complete c...

Article presents issues relating to the chances and curtailment of the use of planning concepts to shape mountainous areas, where development is based on tourism. Spatial planning has for a long time been regarded as a means for protection of environment and in particular the protection of areas with eminent natural attractions like for example mountainous areas. Recent flood showed that having no well-chosen planning concepts for upper river sections effect on damage and danger to human life in these places. The ...

The paper is focused on the assessment of the public interest in the case of carrying out of investment projects on waterways. The realization of projects on waterways has very wide spectra of whole societal impacts, which include technical, economic, environmental and in some cases also historical aspects of investing. The objective of the paper is to introduce methodological steps for the evaluation of partial variants of investment project on the waterway from the point of view of the predominant public interes...

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...

In slaughterhouses are produced a huge amount of by-product by their pig slaughtering and processing activities. These by-products are internal organs (for example: liver, heart, lungs, kidney and intestines), and another by-products like separated bones, hair, semi-finnished and finnished meat products which do not used for human consumptation. In slaughterhauses the most common occuring problems the treatment, storing of by-products is not under hygenic condition. The main problem the cooling chain is interrupte...

The equivalent equilibrium volumetric activity of radon in dwelling houses, located in permafrost regions, equipped with the heating boilers operating on natural gas and located inside the residential sector of houses are investigated. Allocation of radon from wooden walls, other constructions of houses and underground space is improbable. Hence, high variations of volumetric concentration of radon in different houses are caused, mainly, by burning of methane. It is established that in houses equipped with heating...

It is already a fact that at present a major source of obtaining competitive advantage is related to the green development of enterprises. Sustainability is an important element in the core values of the consumers belonging to the Millennial Generation, which is the most numerous living generation nowadays. In this context, all projects related to the implementation of sustainability respect the profile of this new consumer. In 1992, the European Union Ecolabel has been established for several types of products an...

Climate change is one of the biggest challenges of the 21st century and can largely be attributed to human activities, such as burning fossil fuels, according to the 4th Global Evaluation Report of the IPCC (Intergovernmental Panel on Climate Change). International agreements have been made in order to reduce the emission of greenhouse gasses. In Romania, there is a national objective of using energy obtained from renewable sources in a minimum quantum of 10%, by 2020. In order to reach this goal, fuel providers h...

Romania is one of the most seismic-prone countries in Europe due to the periodically occurrence of strong intermediate-depth earthquakes in Vrancea seismogenic zone. In the last decades, many efforts were done to gather macroseismic intensities in case of felt Vrancea earthquakes and additionally an online environment was developed for the automatic approximation of the intensity from people feedback. Besides the extended scientific studies, the near real time estimation of the macroseismic intensity recently beca...

Renewable energies are considered among those that do not produce pollutant emissions and therefore have world-wide benefits, their exploitation indirectly contributing to reducing local pollution but also global phenomena (primarily greenhouse gases). As a result, the development of technologies to exploit these significant and non-polluting energy sources is one of the main objectives of global energy policies that, in the context of sustainable development, aim to increase energy supply security, protect the en...

Project management is a recognized and used technique for the preparation and implementation of projects. There are several different methodologies worldwide, which try to achieve the same goal by different approaches - previously defined goal of the project. In construction industry, the projects are always connected to the particular type of construction. However, the goal of the project is not the realised construction itself, but it is the means how to achieve it. Construction production is characterized, amon...

There is a problem of ineffective usage of a significant part of the secondary resources formed as a result of industrial processing of agricultural raw materials that are usually wasted causing considerable damage to the environment. Sugar production from sugar beet is a major source of secondary raw materials. With an average yield of sugar of 10-12% to the weight of the processed beet, about 83% of beet pulp, 5% of molasses, and 12% of filter sludge are formed, which can be used to produce a variety of valuable...

The resins extracted from heavy oil sample from Ashalcha oilfield (Tatarstan, Russia) and the products of Co-based catalytic and non-catalytic aquathermolysis are investigated. Saturates and four subfractions of resins (R1-R4) are extracted by liquid adsorption chromatography method with individual and solvents. Fractionation method leads to obtain more detail information about the structure of high molecular weight compounds due to subdividing large molecule and its aggregates into small ones. The extracted subfr...

The tectonic interpretation of crustal seismicity data have been recently performed for the central part of the Moesian Platform, having as main target the in-depth development of the Intramoesian Fault[1]. Seismological data for Romania, Bulgaria and the western Black Sea, compiled from published local, regional and global earthquake catalogues and merged into a database, were used to analyze the crustal seismicity (0?40 km) on multiple N-S trending sections across the North Dobrogean Orogen and the eastern part ...

The article concentrates on relation of mineralization, granitoid magmatism and dikes in ore fields of the Eastern Yakutia with cassiterite-sulfide mineralization. It is shown that, the main ore bodies are confined to places of intensive development of dikes and do not significantly concur with the time of granitoid formation. The melts that formed dikes and generated into metasomatised mantle, was the main source of tin and accompanying elements. When centers of granitoid and dike eruption are the same, these mel...

Coals, being heterogeneous matter in general have very complex composition. In South Africa, coal is mainly utilized for electricity generation followed by metallurgical and industrial usages. During the combustion of coal as the main utilization process, there are different chemical components released and these have been found to be the cause of many challenges of using coal for fuel. Out of many challenges of coal utilization, there is the release of SOx, NOx and other harmful minerals, which are highly attribu...

Magnetic nanoparticles (MNPs) of iron oxides are increasingly used in many laboratory and medical applications such as hyperthermia, magnetic resonance imaging or magnetic drug delivery. Popular in medical applications are magnetite (Fe3O4) and maghenite (?-Fe2O3) nanoparticles. They have gained a great interest because of their low toxicity, biocompatibility, simple separation methodology, and low cost of production. A novel magnetic hydrogel adsorbent based on gellan gum and Fe3O4 (GG/Fe3O4) was synthesized and ...

Today, the increased focus on the Arctic zone is influenced by a number of reasons: The Arctic zone of the Russian Federation (the Russian Arctic) has the potential to become a new oil and gas region for our country; the military and strategic importance of the Arctic; the future outlook for the Northern Sea Route. The development of the Russian Arctic aims to enhance the social and economic growth of the region in line with the priorities set forth by the state policy and based on the range of socio-economic issu...

In the era of the increasingly implementation of renewable energy sources in the electrical energy supply, the expansion of a sustainable energy industry must be promoted the resulting increase in storage requirements. The Gravity Hydro Power Tower Energy Storage (GHPTES) is an innovative hydraulic energy storage system based on pumped storage technology. It consists of a vertical cylindrical cavity, filled with water, in which moves an overload piston from steel at smaller storage systems or from rock at large st...

The solving of the project of the Ministry of Agriculture of the Czech Republic dedicated to sustainable agricultural management in the North Western Bohemia is under way from 2015 to 2018. The main attention of the 2017 and 2018 research is devoted to the research of experimental areas retained to the natural succession. The second research problem was the development of the geological parks as a part of the restoration activities. The last part of the paper is the brief information about first step of historical...

New results of the main bentonite localities mineralogical research in the Most Basin area are the main topic of this paper. The main attention is devoted to the quarry Rokle near Kada? city. The first part of this article briefly summarises geological situation of these localities, parameters of the mined raw material and possibilities of bentonite application. The second part of the paper describes result of the long term mineralogical research of these localities. The last part of this article presents new mine...

The harvesting of the material has been done by means of entomological mesh and Barber soil traps from some wheat crops in the Dele?ti - Vaslui area. In the Barber traps, consisting of plastic containers height of about 10-12 cm and 8-10 cm in diameter were placed a solution of about 4% strength formalin. Six traps were used for each experimental variant, with a total of 18 traps. For entomological mesh collection, periodically, with the harvesting of the material picked up to the soil traps were made 100 threads ...

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...

The base of the Northern Bohemian region is made up of the kratogen (old block) of the ?Bohemian Massif? that belongs to the so-called Hercynian (Variscan) province. Its development was tectonically terminated by hercynian orogenesis, which means by orogeny in the Palaeozoic Era (Carbon). Such regions are not very promising for the occurrence of geothermal energy, unlike geologically younger areas. But the heat flow is significant in some parts and consequently the area is called the ?Czech geothermal heat flow an...

Wood waste is a very important group of waste, interesting for its potential in material recycling as well as energy recovery. In this large quantitatively and varied qualitatively group of waste, two main types of waste are distinguished: wooden waste and post-consumer wood. The analysis of suitability of post-consumer wood for thermal conversion covered selected wood waste: boxed wood furniture made of wood-based panels and internal door waste, made of MDF. Wastes were not contaminated with chemicals pollutants,...

Land degradation processes facilitated by geomorphological changes in the Berbe?ti Mining Basin contribute to highlighting the mining anthropic landscape, so the relief changes its morphological configuration. During morphological exploitation, the morphological alteration reaches a maximum value, being dependent on the exploitation and construction phase of the tailings dumps. Morphological alteration is closely related to the location of the quarries and the morphology of the surrounding areas. In the case of th...

In order to carry out the lignite extraction activity, the quarries in Oltenia basin occupy land areas, which before the exploitation had another destination. From the researches carried out it was found that the most occupied areas are the woodlands. The most affected will be M?t?sari locality with the neighboring villages (Br?det, Runcurel, M?t?sari, Croici), of which 341 households (274 households from Runcurelu village, 60 households from the village of Croici, 5 houses from M?t?sari and 2 households from Br?d...

A significant part of Russian regions is resource-based and specializes in the extraction and export of natural resources. The paper aims to identify the link between the presence of natural resources in the region and its economic growth, especially in the period of low oil prices. The methodological toolset includes elements of cluster and regression analysis, as well as the method of smart specialization. The allocation of resource regions was carried out through cluster analysis. Regression analysis was applie...