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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...

There is salty water, such as the salt mine water of the Ostrava-Karvina detrity, in the Czech Republic, characterized by their high mineralization. Detrity water negatively affects most organisms and influence their growth processes. After long-term research, general phytoremediation ability has been found in reed. The phytoremediation ability has also been tested in laboratory conditions, by building hydroponic systems. For 8 months, hydroponics was being watered with saline and nutrient solutions "Hydroponex" a...

According to State Forest service data in 2018 Norway spruce occupies 19% (0.533 milj. ha) from total forest area in Latvia. Disease and pest intense spread and damage in different forest ecosystems is result of climate change creating a risk to forest management. Spruce bus scale (Physokermes picea Shrnk.) in Baltics including in Latvia up to 2009 were detected only in parks growing trees but after 2009 also in different age P. abies stands especially on drained soils including Myrtillosa mel. Research aim is to ...

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...

The study was carried out in cooperation with the State Institute for Radiation Protection of the Czech Republic as a pilot project for the 137Cs Residue after the Chernobyl accident. The prediction of the development of the radiation situation can be based on an extensive soil survey. The current contamination of the soil with 137Cs was contributed by 2 sources: the nuclear weapons tests in the atmosphere that peaked in the 1960s and the Chernobyl accident. Surface contamination in the CR from the nuclear weapons...

Design strategy requires the proper order of actions. Each stage of the investment focuses on the data set and the results of conducted investigations. A virtual 3D model and computer simulations facilitate and accelerate the work of designers. Thanks to proper planning and consequent schedule implementation the whole project is carried in a timely manner. Proper logistics of actions, combined with the implementation strategy, translates also into the amount of incurred expenses. The specified order of actions, to...

Planning the sales in a mining enterprise in the modern market conditions is difficult and burdened with significant specific and systematic risk [10]. It is because the quantity plan is determined by geological and mining conditions, on which the enterprise does not have a direct influence. The same applies to the quality of the sourced raw material which depends on the natural parameters of the deposit. On the other hand, quality plan depends on the difficult to foresee sales price which is shaped in the changea...

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...

Nowadays a typical task in water quality modelling is to simulate the pollution spreading downstream, i.e. initial and boundary conditions are known. However, in practice opposite problems may occur: pollution concentration time courses in specific locations are known (e.g. based on the on-line monitoring), but the position of the pollution source is unknown. This type of task can occur in case of accidental pollution and is named as an inverse task. Particular importance has the inverse task application in urban ...

Snow cover is of greatest interest for geoecological studies due to the fact that it accumulates a complex of pollutants from natural and anthropogenic sources over a long period. Control and modeling of marker compounds in the snow cover are particularly interesting because marker compounds are toxic on the one hand, and on the other hand they allow to identify anthropogenic pollution pathways and ways of transformation. Polycyclic aromatic hydrocarbons (PAHs) belong to such compounds. The article presents the re...

The aim of the work is to study the levels of polycyclic aromatic hydrocarbons (PAHs) in a 20-cm layer of soils in the Novocherkassk energy plant (NEP) emission zone, based on the results of monitoring studies conducted in 2017. In order to study the PAHs levels in the soils of the anthropogenic emission zone an annual sampling of soil samples of 10 monitoring sites located at a distance of 1-20 km from the NEP was carried out. Samples of soils were selected from a depth of 0-5 and 5-20 cm. In the selected soil sa...

In tanneries, only approx. one-third of the total mass of raw hides and skins is converted to finished leather, while two-thirds become either dissolved or solid waste. As part of the natural materials category, usually considered waste, leather fibers introduced into cement mortar panels play a fundamental role in construction due to both insulation properties and mechanical strength. Waste is introduced as a powder or filler or as aggregates in the concrete mix, with energy, economic and environmental benefits. ...

In this paper, combined effects of carbon fibres treatment and compatibilizer polymers (PE-g-MA) on the structure and properties of PA/PE/PE-g-MA/ functionalized carbon fibres composites were studied. The optimum formulation was used to prepare a series of nanocomposites under different technological conditions. Also, a correlation between their physico-mechanical properties and IR spectra (ATR technique) was proposed. The carbon fibres functionalisation consisted in oxidizing the nanoparticles with oxidant mixtur...

Amines play an important role in the modern chemical engineering. It is a key intermediate for agricultural, pharmaceutical, textile, polymer and other fields of industry. Bio-basedamines, e.g. the derivatives of isohexides, are of a great attention. Nowadays, different methods of the synthesis of polyamides, polyimides, polyesters, polyurethanes, and polycarbonates on the base of isohexides are developed. Thus, mono- and diamine derivatives of D-isosorbide are considered to be a prospective feedstock for polyamid...

Regarding any hydrocarbon reservoir, the most important question that needs to be answered is production capacity. During production, the achievable fluid rate depends both on the properties of the reservoir as well as the pressure difference (drawdown [1]) between well and reservoir. From the petrophysical point of view, many effects restrict fluid flow in the porous system (pore size distribution, wettability properties, saturations etc.) resulting in the obtainable fluid rate corresponding to the existing drawd...

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...

Monitoring soil contamination with heavy metals is challenging because of the large areas of contaminated soil and the high cost of laboratory tests. For these reasons new measurement methods of metal concentration in soil based on the Fourier Transform Infrared Spectroscopy (FTIR) were tested. These methods include measurements made mainly in the near infrared region (NIR). Moreover the field implementation of these methods is considered. Previous results presented in the literature are not consistent and do not ...

Building Information Modeling (BIM) is an intelligent 3D model-based process that gives Architecture, Engineering, and Construction (AEC) professionals the insight and tools to more efficiently plan, design, construct, and manage buildings and infrastructure. The main vision of BIM is to create true, reliable information of the buildings that are complementary and easily replaceable and made them available to different participants of the construction process. The basic condition for fulfilling this vision is the ...

The paper deals with the possibilities of metal recovery from sediment from sludge disposal site after mining activity from locality Zlate hory. The locality is protected from mineralized water, which represents a potential threat for groundwater. This work deals with the use of bacteria Acidithiobacillus ferrooxidans to bioleach polymetallic ores (Cu, Zn, and Fe) from these locality. It is a simple and effective method to recover metals from mineral raw materials, where conventional methods cannot be applied. As ...

The paper deals with the possibilities of metal recovery from sediment from sludge disposal site after mining activity from locality Zlate hory. The locality is protected from mineralized water, which represents a potential threat for groundwater. This work deals with the use of bacteria Acidithiobacillus ferrooxidans to bioleach polymetallic ores (Cu, Zn, and Fe) from these locality. It is a simple and effective method to recover metals from mineral raw materials, where conventional methods cannot be applied. As ...

When it comes to efficient use of water, especially groundwater, a water / water heat pump is a very good example of its high efficiency at the optimal qualitative and quantitative conditions of the groundwater used. Hydrological and hydrogeological conditions on the territory of Slovakia is for several factors, mainly with the geological structure, location and clime. All this terms influence richness of surface, underground but also mineral water. The main objective of this article was based on knowledge of the ...

The authors of this article describe the suitability of using light dynamic penetration in the target area. The area of this survey was selected on the already reclaimed area, which, however, proved to be unstable. The main objective was to locate individual water-saturated horizons in the locality and, eventually, to determine the shear areas on which instability occurs. For this reason, several geodetically measured points were selected for dynamic penetration measurement. By this method, the water-saturated hor...

The planned maintenance activities of the mining technological equipment are carried out on the principles of risk management and is done in order to prolong their duration of operation and to reduce the production cost. The quick possibilities of reducing production losses due to accidental stoppages of quarries and underground exploitation equipment, depend on the establishment and application of reconditioning methods of the subassemblies and spare parts that are frequently defects and replacement. The rotary a...

The concept of a ?passive House? has been introduced for the first time in Germany, subsequently being extended and at higher latitudes and different features climatic from those of Germany, in the south, west and south-west of Europe. Passive building has been defined by Wolfgang Feist, Passivhaus Institut, as being the building that demand for heating must not be more than 15 kWh/m? year, and total consumption of primary energy should not be more than 120 kWh/m? year. In this paper we strive to study at the conc...

Currently, the southern polar region of the Moon is considered as the priority landing area for the planned lunar mission Luna-25 (Moon-Globe). Nevertheless, in this paper we have examined some areas in the North Pole region of the Moon as possible landing sites for future lunar missions. For a research we have chosen some areas located in the northern polar region: area of a crater Peary (88,9?N, 32?E), area in vicinity of Rozhdestvenskiy U crater (84,9 В° N, 152 В° E) and a Nansen F crater (84,95 В° N, 62,44 В° ...

Even if the European Commission estimates that the end-of-life recycling input rate for coking coal is zero, some initiatives proved that coal could play a role in circular economy. Coal-fired power plants still play a significant role in electricity generation although a lot of renewables were developed. Coal combustion produces a relatively small amount of fly ash that is used in cement factories and a large amount of bottom ash that cannot be used in industry because its high carbon content. From this point of ...

The object of the study was the Ufimian bituminous sands and sandstones in the east of the East European Platform (Russian Federation). Bituminous sands and sandstones are confined to the Sheshmian horizon (Cisuralian, Ufimian Stage of the General Stratigraphic Scale of Russia). Interest in the study of bituminous rocks is associated with the depletion of traditional oil fields. Initially, bituminous rocks were considered as a source of bitumen for road construction, but in recent years they have been involved in ...

The work summarizes the results of research into fundamentals of design and application of slow-release and ecologically safe forms of agrochemicals used for protecting plants from pathogens and weeds. The potential of degradable polyester poly(3-hydroxybutyrate) [P(3HB)] for designing long-term formulations of fungicides (tebuconazole) and herbicides (metribuzin) is described. Experimental forms of agricultural preparations were compared with the commercial fungicide Raxil Ultra containing tebuconazole and Sencor...

The work summarizes the results of research into fundamentals of design and application of slow-release and ecologically safe forms of agrochemicals used for protecting plants from pathogens and weeds. The potential of degradable polyester poly(3-hydroxybutyrate) [P(3HB)] for designing long-term formulations of fungicides (tebuconazole) and herbicides (metribuzin) is described. Experimental forms of agricultural preparations were compared with the commercial fungicide Raxil Ultra containing tebuconazole and Sencor...

The population of Lviv (Ukraine) together with the suburban area is about 1 million inhabitants, which creates significant anthropogenic pressure on the environment. Suburban area, which is characterized by a wealth of natural resources - diverse landscapes, forests, water sources, therapeutic waters, is exposed to "creeping urbanization". At present, the geography of recreational use of natural objects is considerably expanded. The greatest burden of holidaymakers of today falls on the suburban area of the city w...

Hybrid larch is fast growing and more wind-resistant than Norway spruce; thus, it might be a suitable alternative to reduce (diversify) the forest management risks in context of climate changes. However, interest to use this species in forest regeneration, recently higher than before, is still limited. In part it is related to lack of experience and information on its growth. Therefore aim of our study was to characterize growth of Larix x eurolepis young stands in Latvia. Sample plots were placed in 7 stands of t...

Maize is a major energy crop for the production of silage, processing in a biogas plant, or livestock feed. However, its cultivation is associated with the possibility of soil erosion and other soil degradation processes. This paper deals with the comparison of the development of the root system of maize and selected leguminoses ? Broad bean (Vicia faba L.), Common vetch (Vicia sativa L.), White lupin (Lupinus albus) which can be grown in mixed culture system (MC). Four variants of the experiment were prepared in ...

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...

Lately, in our country, the necessity of expanding the transport infrastructure works has led to the necessity of designing and executing engineering constructions in areas with lands considered difficult in terms of physical and mechanical characteristics. According to the Romanian and European norms, sensitive clay of low consistency is included in the category of difficult land. This paper presents the main research stages of the physico-mechanical properties of sensitive clays found on a section of a highway i...

The target of this article is the providing of the brief information about preventing the dust spreading problems solving during operations of machinery equipment in brown coal open pit mines and in coal dumps. The main part of this paper briefly describes operation tests of the new rotary mist unit realized during last years. The increased concentration of the dust in the air causes important health hazard. The dust is very bother factor. The occurrence of the dust in operation area is the source of danger fire r...

The paper presents the need for the purification of polluted air from the highly polluting processing technology of an industrial shop. (paint shops, foundries, welding constructions, forging, etc.). Practical realization elements of ultrasonic filter and finite element modeling of the vibratory disk used in air purification system are shortly described. Besides these, advantages of using ultrasounds in the pollutant air filtration and purification process and an ultrasonic filter designed are presented. The main ...

The particularities of the hydraulic system of the roof supports are determined by the repetitive structure specific to the supporting component, by the supply network, by the operating liquid and by the length of the coalface, as well as by the operation principle of the pumping station supplying the execution elements with the average flow given by the load and the resistance of the hydraulic networks. The paper highlights all these particularities bringing forward a series of practical details for calculation o...

Due to the last years effects of climate changings upon surface water flow, but also due to alterations in running the complex water arrangements schemes in order to satisfy various updated needs, it happens that more and more low-level water reservoirs, especially in the hilly and plainly areas, would call for a study regarding their conversion from non-permanent to permanent storages. It is also true that there might be some cases of storages accomplished as permanent which recently tend to work seasonal, but in...

The main succulent fodder for cattle in the winter-stall period is silage. For ensiling, amaranth was used - a promising high protein fodder crop, capable of satisfying the animals needs in nutrients. The main factor determining the timing of amaranth harvesting is the sum of the active temperatures (climatic conditions), which, when cultivated on silage, must be at least 1000В°C. Ensiling was performed at different stages of vegetation: in the phase of the beginning of flowering, milk and milk-wax ripeness of see...

The main succulent fodder for cattle in the winter-stall period is silage. For ensiling, amaranth was used - a promising high protein fodder crop, capable of satisfying the animals needs in nutrients. The main factor determining the timing of amaranth harvesting is the sum of the active temperatures (climatic conditions), which, when cultivated on silage, must be at least 1000В°C. Ensiling was performed at different stages of vegetation: in the phase of the beginning of flowering, milk and milk-wax ripeness of see...

Orchis galilaea is the only Lebanese orchid that is restricted geographically to Lebanon, Palestine and Jordan. It is a terrestrial orchid that attracts its pollinator by sexual deception while offering no reward. The full distribution of this orchid in Lebanon has not been determined. This study is part of ongoing research into the population dynamics of the orchid to form a management plan for its conservation. A Geographic Information System (GIS) was used to identify the habitat characteristics of O. galilaea ...

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...

The article deals with the prediction of deformation progress of the basement for a high-rise building founded in a deep foundation pit of 12.0 m below the ground level. Foundation consists of a stiff reinforcement concrete raft with basement in a Neogene layer of several ten metres. The deformation progress of the footing bottom is predicted by numerical approach of a finite-element method and the results are subsequently confronted with geotechnical monitoring. For this purpose, the input parameters were calibra...

The conceptual basis for the creation of a forecast-analytical system that allows to predict the pollution and to control the purification of oil-containing sediments of small rivers are considered in this article. Oil content of bottom sediments creates the risk of secondary water pollution not only by substances entering the sludge. More dangerous products of degradation are formed in the result of the activity of the indigenous microorganisms, that inhabit the bottom of aquatic environment. Forecasting the dyna...

Measuring soil moisture it is usually not performed on a daily time step due to financial costs, time-consuming measurements and variability of the weather. However, since this information is an important part of many hydrological and water management studies, the author tries to solve this situation by proposing a suitable interpolation method. The goal is to predict daily moisture values so that their conformity with the test data is as high as possible. The calculation is based on the use of soil moisture data ...

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...

One of the main problems industries in general are facing is the prediction of errors or failures of the most sensitive or critical assets of their equipment. For this reason, techniques based on predictive maintenance are emerging, searching for the early detection of possible cracks, imperfections or defects that are likely to cause an accident or the partial or complete shutdown of a plant. The main objective is to anticipate breakages in order to improve the planning and scheduling of control and maintenance o...

Sydvatten AB operates the water plant Ringsj? Agency in Stehag, Southern Sweden, and the company has since the 1970s deposited waterworks sludge in the sludge landfill at R?nneholms Mosse (bog), Sj?holmen (WGS84 55В°48'46.1"N 13В°18'25.6"E). In order to handle the produced future waterworks sludge from Ringsj? there was carried out a trenching and stratigraphic study of Ringsj? Agency waterworks sludge. The aim of the project was to roughly determine the mass balance for Fe and Al for the basis of the results to d...

Considering the current context in which all producers are trying to optimise processes and resources, making improvements to traditional practices is of great interest in order to fulfil customer expectations for high quality and safe products. Alternatives to enhance and complement traditional winemaking practices are emerging technologies such as ultrasound addressed towards reducing the fermentation time and increasing the extraction of phenolic compounds, controlling a variety of wine spoilage organisms, wine...

Considering the current context in which all producers are trying to optimise processes and resources, making improvements to traditional practices is of great interest in order to fulfil customer expectations for high quality and safe products. Alternatives to enhance and complement traditional winemaking practices are emerging technologies such as ultrasound addressed towards reducing the fermentation time and increasing the extraction of phenolic compounds, controlling a variety of wine spoilage organisms, wine...