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Removal of potentially harmful As compounds by adsorption onto biosorbents is a cost-effective alternative to the conventional treatment methods. Peatlands can accumulate arsenic originating from both natural and anthropogenic sources [1-3]. Wetland soils and sediments are subject to frequent changes in redox conditions, driven by fluctuations in the water table and shifts in biological activity. Under oxic conditions, natural organic matter (NOM) promotes arsenic release from metal-(hydr)oxides, thereby enhancing...

Until recently, the effect of various factors, which are due to the stressed state and physical weathering of a massif on the development of microfractures in igneous rocks in elastic-brittle state has been poorly studied. Therefore, the genesis of fractures of various sizes cannot be revealed and the strength of the massif cannot be reliably forecasted. The authors have assessed the conditions and formation pattern of microfractures in rapakivi granites from the Salmi massif, the Fennoscandian Shield, which displ...

The article analyses the air temperature characteristics of the winter season in north-western Poland (Fig. 1) between 1951 and 2015.The aim of this work is to analyses the changeability of thermal conditions in the winter, taking into consideration the speed of changes determined by a coefficient of linear trend, and to investigate the relations between North Atlantic Oscillation and the air temperature. In this study, the JonesпїЅ index, whose values were determined in 1825 and regularly published on National We...

There is a growing interest in the world in coal as critical raw materials. Coal also can be a carrier of many valuable components. An important geological and geochemical task is to find out the conditions for their accumulation in the coal. The complex of trace elements including group of rare earth elements (REEs) has been studied in the coal seams of the Volga-Ural region (Russia). The article is considered the main regularities and reasons of the concentration of trace elements in coal seams. In the Volga-Ura...

This work presents improvement of land subsidence monitoring obtained by combining results of Sentinel-1A and Sentinel-1B data processing. In presented work DInSAR (Differential Interferometry SAR) technique was used. Results of DInSAR technique provide information about values of vertical deformation of the surface. Using this technique the areas endangered by subsidence phenomenon can be identified and appropriate steps in order to save the infrastructure, buildings, roads, and also human life can be taken. The ...

Dynamic social development results in growing demands for sustainable human activities. Implementation of the sustainable development ideas should be also applied in designing and development of commercial sites. The sustainable construction industry should improve the quality of operations performed by users of such facilities. It should also influence the level of satisfaction of their users and generate benefits for them and for the local society within the area where such facilities have been located. The pape...

The analytical review was conducted of modern scientific-technical, regulatory, and methodological literature in the area of existing experience in assessing the sustainability of coastal systems and coastal infrastructure, as applied to marine spatial planning. The analysis showed that currently there is no uniform approach to the assessment of sustainability of coastal systems and coastal infrastructure, as well as various impacts on the environment. The existing global and regional concepts of assessment of coa...

In the Czech Republic, the production of energy using fossil fuels - particularly coal - is still a major proportion of total production. The energy sector is and will remain one of the most important areas of the Czech economy, ensuring supply of electricity and heat to the population and industrial enterprises. In the power and heating plants is burned primarily domestic brown coal mined in opencast mines in the north-western part of the Czech Republic, namely, Usti Region. For combustion of biomass in the Czech...

This study presents an analysis over the action of carboxyl esterase, enzyme used on dough for pasta and noodles. By using carboxyl esterase polar lipids are formed, acting as emulsifiers and interacting with the gluten as well free unsaturated fatty acids are released, which can be converted by lipoxygenase (contained in flour naturally) resulting in the formation of hydroperoxides, which can act as oxidants and lead to protein strengthening and bleaching (oxidation of pigments). Enyzmatic improvement of pasta an...

This article shows the results obtained by applying a study method of the convergence of structural models, for the particular case of a structural model from the geotechnical domain. For this purpose, is used the study method of the structural models convergence, already widely used in the field of research and CAD - CAE design. For a larger relevance and utility is presented the convergence study of a structural model for a ground section to which it applies a uniform load. The problem of ground compaction is so...

The performances of the excavation machines depend largely on the tool and overall machine characteristics and on the other hand on physical mechanical characteristics of the excavated rock. There were more theories based on analytical deductions to explain the main cutting parameters on the basis of basic physical mechanical properties of the excavated rock. In this paper we use a new methodology, based on reliable laboratory data, which make possible to obtain correlation and regression formulas in order to pred...

This paperwork aims to present the correlation between the Modulus of Deformation, E as a physical parameter and the internal friction angle of the soil, ? as a resisting parameter of soils. Assigning the resisting parameters to soils shall be reliable and when there is a suspicion in their values derived out of a test, than they shall be compared with other tests used to determine the shear resistance. To give the correlation between the Modulus of Deformation, E and the internal friction angle, ? the results obt...

The loss of an organ or part of an organism generates, in addition to loss of function, social and psychological disorders. The modern bio-technologies try to diminish their effects on affected humans. The advancement of modern medicine that uses biomaterials to solve issues related to tissues and organs reconstruction has increased the human life expectancy, rapidly. The most important factors that limit the lifetime of implants are certain corrosion and wear products, which can have negative effects on the human...

Discussed are analyses and studies of an innovative method for managing active mining impact on future urban areas. Taking into consideration legal, methodological, engineering, economic, environmental, and social aspects, the solution represents an interdisciplinary attempt to address active mining damage problems. The examination follows a number of theoretical and practical analyses in addition to standard, numerical, and statistical calculations, as well as econometric models based on case studies and EU guide...

The Danube, the second largest river in Europe, after its flow through many cities and countries, meets the Black Sea creating a meeting point which benefited the creation of the Danube Delta known as one of the greatest wetlands of the planet. The stretches of water and land of this delta offer good living conditions for many species of plants and animals. GIS technology is an important tool in the analysis of geographic areas. The purpose of this study was to create maps using a set of GIS technologies that pres...

The drilling and investigation of the Kola superdeep borehole SG-3 for the first time provided direct data on the structure and composition of the ancient continental crust at previously inaccessible depths. Rock density and their anisotropy in elastic properties were used as the main parameters for the formalized description of the borehole SG-3 section and the reference profile on the day surface. The first parameter reflects the rocks' lithology, the second accounts for the intensity of synmetamorphic tectonic ...

The article is a review of numerous studies devoted to the problem of identifying the main sources of pollution of the Ilek River and the underground water of its valley. The main sources of pollution are: the old sludge collector; new sludge collector; industrial site, soils polluted by the Alga Chemical Factory and dust from the dried surface of the sludge accumulators and the slag pipelines emergency leakage. It is established that in the sludge accumulators area the river drains heavily underground water conta...

The article aims at analysing the content of heavy metals in the soils of two rural administrative units of the municipality of Trzebinia namely Psary and P?oki which are located in the Silesian-KrakпїЅw Upland, in the western part of the Malopolska province, in Poland. The analysis of soil material was based on the determination of granulometric composition of the soil with the use of the Casagrande method modified by PrпїЅszy?ski (according to the industry standard BN-78/9180-11)[1], soil reaction in 1M KCl and ...

The requirements for maritime application are very strict because of the effects of seawater on the materials. All the devices operating in seawater should be waterproof because of corrosion and electricity dangerous. This problem is more important for electric motors and other equipment with rotating parts where there is a necessity to seal the output shaft and other connecting features in order to isolate the motor from penetrating of seawater. Differential pressure between seawater and air in the motor causes a...

In the paper the results of the study of the crack resistance of circular shaped fiber reinforced concrete tunnel linings are presented. On the basis of laboratory testing of linings and numerical simulation of their behavior (FEM) is shown that the deformation of fiber concrete can be considered as the deformation of solid, elastic, homogeneous medium. In addition, the analysis of stressпїЅstrain state of these linings shows that their failure is caused by stable propagation of the single crack, which usually for...

The main problem in applying existing geomechanical software suits is the fact that the process of developing the starting geological and structural model of a deposit is extremely complex, which is due to lack of automation in collecting separate data on initial geological and geomechanical conditions. The purpose of this research is to develop a software suite for detecting zones potentially prone to rock bursts. The research methodology includes analyzing causes of mine destruction and identifying the most infl...

Foam flooding is a promising enhanced oil recovery (EOR) method for water-flooded reservoir due to its good mobility control capability. When foam is injected into oil reservoirs, it will contact with oil, and oil will affect the performance of foam. Therefore, the effect of oil on the properties of foam has always been a key research topic for foaming flooding, but it is also a very controversial subject. Many researchers reported that the presence of oil is detrimental for foam stability, but some others believe...

The research conducted at farms in mountain areas have shown that the average age at first calving is 849.15 days (28 months and 5 days). The variability of this index is extremely large with the minimum of 570 days (19 months) and a maximum of 1350 days (45 months). It follows that the average age at first breeding would be 18 months and 10 days. At first glance this figure fits perfectly within the limits recommended by the literature, but the reality is different. Because of the desire to have the calving group...

This investigation reports the influence of industrial waste material namely slag on the performance on cement composites. Recall that slag is a landfill material resulting from the extraction process of steel making. The scrap material was physically treated by crushing followed by ball milling and screening. The slag was mixed with the Portland cement and compared with traditionally Portland cement composite. The mix was casted into the desired moulds and allowed to cure at room temperature for 48h followed by o...

The effect of a polycomposite compost consisting of three organic waste (farmyard manure, sewage sludge, and marine algae) on the nutrition and seed production of the sunflower cultivated in a field experience on a Chernozems in the southeastern part of Romania, was investigated for 2 years. Three types of compost were made from different mixtures of the three components added in proportions by 25% or 50% so that each compost was prevalent in one of them. Agro-chemical analyses of soil samples (pH and N-NO3, N-NH4...

A variety of failures occurs due to excessive seepage through the dam body during the design, construction and maintenance of earth dams. It happens because of various reasons: unsuitable dam location at construction site, unsuitable soil composition, interruption of construction technology, etc. Timely noticing of the reasons of seepage phenomena, monitoring and evaluation processes dangerous for structure, prediction of seepage path and the possible consequences for structure, protective measures against undesir...

Yogurt is widely consumed as functional food because of the good taste and nutritional properties (rich in potassium, calcium, protein and vitamins), being an excellent vehicle to deliver probiotics to consumers. However, its enrichment with various physiologically active ingredients could provide specific health benefits beyond basic nutrition. The reason for incorporating the sea buckthorn powder (SBP) in yogurt was to enhance its functionality, considering the sea buckthorn content in non-digestible oligosaccha...

Nowadays, renewable resources come to the forefront in the production of electricity. Among the most important resources belong the utilization of hydropower potential of water courses. The construction of hydraulic structures should not have a negative impact on the groundwater level regime of the surrounding environment. In the article, we focused on the selected small hydropower plant on the Hron River. There was built an effective monitoring system to track changes in groundwater level regime during its constr...

The paper deals with the efficiency of selected sorption materials when used on selected chemical hazardous substances in practice. Experimental investigation to very real effectiveness of technic sorption materials has been made. Selected samples of technic sorption materials that can be used for the disposal of leaked chemical substance. Sorbent powders of Eco Dry, Spilkleen and textile sorbents of HKZP 4446 and E 1000 where used and applied as technical sorbents. They studied technical sorbents are mostly used ...

Almost 97 percent of water on the planet is seawater, 2.31 percent is frozen in glaciers; 0.66 percent is ground water, and only 0.03 percent of water is included in the hydrological cycle on the surface of the earth. The paper analyzes what factors of human behavior lead to a change in freshwater resources on the planet. The aim is to create a model which will show us the relations between the changes in fresh water reserves and human behavior. An ADL-model (autoregressive distributed lags model) was chosen as a ...

Maize (Zea mays L.) is the most important cereal after wheat and rice grown widely throughout the world, playing a major role in human diet or as livestock fodder. Water and nitrogen are the most limiting factors for maize grain yield and it is important to evaluate the response of maize crop to irrigation associated to N fertilization in order to obtain high yields and to prevent nitrate pollution. In this context, it was designed an experiment with the main purpose to analyze the variability of yield potential a...

In general, there is no natural soil surface that would not be threatened by water erosion. However, a number of methods that estimate the erosive soil risk incorrectly exclude forests and flat agricultural land from the category of areas vulnerable to water erosion. Forests are known for their soil protection functions, when a dense tree canopy interrupts precipitation and decreases the kinetic energy of water drops falling on the soil surface. Moreover, the top organic soil layer in forests has a very good infil...

Natural zeolites and synthetic ones are porous materials characterized by the ability to lose and gain water reversibly, to adsorb molecules having a corresponding cross section diameter (adsorption properties or which act as a molecular sieve), as well as to exchange constitutive cation without a major change in their structure (proprietary ion exchange). The exploitation of these properties underlies the use of zeolites in a wide range of industrial and agricultural applications and in particular in animal nutri...

The problems of sintering process are dust emissions and pollutant emissions, especially SO2. During the actual production in the sintering process emission ceiling limits are exceeded. They are being implemented measures that prevent from breaking SO2 emission limit. The sulfur content of feedstocks influences both the quality of sinter and the pig iron and the amount of SO2 emissions. One of the possibilities is a partial substitution of coke dust with anthracite. World steel production will continue to be domin...

Environmental pollution has become one of the most debated issues of the contemporary times, being a consequence of using imperfect methods in production technologies. One of RomaniaпїЅs areas where the environment has suffered as a result of human activities is the Jiu Valley, a place where the main activity was and continues to be mining. In this paper the authors aim to identify and quantify the pollution sources related to the coal mining activity from the western part of the Jiu Valley and, based on data rela...

The main aim of our paper is to analyze and make proposals on the effective management of individual items that have a significant impact on profit or loss and the possibility of elimination of production risks. Attention is paid to the issue of management of production risks in the manufacturing plant in Slovakia. To obtain the necessary data, we draw information from internal materials. For management, it is important to know what risks it could negatively affect them. Identification, quantification of impacts a...

Agriculture seeks to accommodate the needs of quality, the cultivation of land in harmony with the environment, respecting the life and the balance of the ecosystems. In this context the aims of our work were to contribute to the strengthening of the aspects related to the influence of the rotation and fertilizing purposes with nitrogen on the content in nutrients of the soil, of the elements of the fertility and the production of triticum wheat. Also has proposed to achieve a summary report on the experiments of ...

Transylvania is one of the historical provinces of Romania, located within the central part of the country. This region is characterised by a marked ethnic, linguistic, cultural and religious diversity. The main ethnic groups forming the population of Transylvania are Romanians, Hungarians, Roma, Saxons, Swabians, Armenians, Jews and Ukrainians. Over time, the structure of TransylvaniaпїЅs population varied significantly in terms of ethnicity due to its political and economic conditions. The evolution in populatio...

The theme of this project is the presentation of a model of drawing for civilian surface buildings, in order to start a series of major projects.The piece of land subjected to topographical measurements is situated in the western part of the extended urban area of Timisoara, Timis County. The beneficiary of this project is a multinational corporation situated in the city of Timisoara. As placement is concerned, the piece of land is situated in a rural area, close to the city.This work focuses on the study of topog...

This work was interdisciplinary, so the data provided by the measurements went into the Central Park rehabilitation project, providing graphical support for architects, structural engineers, plant engineers, specialists in landscaping. Baile Herculane is a famous Romanian resort which is located in the south - eastern county of Caras Severin, along the tectonic corridor Cerna Valley, which separates the Mehedinti Mountains from the Cerna-Godeanu Mountains. The Central Park related land is owned by the City Council...

This article deals with a possibility of extraction flotative Ag-concentrate from the waste material, concretely slag arising from processing of silver and copper in the second half of the twentieth century, which is deposited around the city of KutnпїЅ Hora in the Markovi?ky region. A cationic octadecylamin was used as a flotative collector. The aim was to reach maximum metal content of the concentrate as well as maximum yield of Ag into concentrate during a decrease of raw material capacity. An anion active coll...

Pectinatella magnifica is freshwater organism, which round-shaped colonies are most often found attached to the different submerged parts of coastal plants and can reach the weight even several kilograms. Usually it can be found in oligotrophic to mesotrophic waters, during the season when water temperature reaches 20пїЅC and more [4]. Although Pectinatella magnifica originally comes from North America, it has recently been known as an invasive species in Europe and part of Asia. The first recorded occurrence in E...

The article presents the evaluation of the stability of vegetation in forest ecosystems, in places of mass rest in the woods on a lake in the littoral zone of pine forests of the Mari El Republic. Studies have shown that the amount of coniferous undergrowth ranges from 0.016 thousand PCs/ha to 0,104 thousand pieces/ha, and does not provide the initial stage of the formation of dark coniferous young growths. For deciduous species, mainly birch, in some cases, aspen is characterized by intensive growth, which preven...

Gold deposits in black shale type have huge reserves of hard-gold. The prevailing part of reserves of native gold is in carbonaceous terrigenous deposits in Russia. These deposits are represented by objects of various scales - from small to unique (In Russia пїЅ Olimpiada, Nezhdanin, Natalkin, May; in Uzbekistan пїЅ Muruntau, Kokpatas, Zarmitan, Daugyztau, Amantaitau; in Kazakhstan пїЅ Bakyrchik; in Tajikistan пїЅ Chore; in Kyrgyzstan пїЅ Kumtor; in the United States пїЅ Mather Lod; in Australia пїЅ Bendigo, Olymp...

The global level of urbanization is growing. Some estimates indicate that till 2030 the degree of urbanization will reach 83% in economically developed countries. In this context, large urban areas are already facing with problems due to water and air pollution, noise pollution, forming "heat islandsпїЅ, energy consumption, overload of rainwater collection systems and human health degradation. In this paper are presented the benefits of green roofs and the contribution they play in solving problems in urban areas....

Studied groundwater pasture arrays, the estimation of forages stock based on the analysis of simultaneous satellite and field work on the mowing of vegetation on key sites recommended measures to increase the efficiency of pastoral transhumance. Used domestic methods of evaluation of natural annually renewable resource fresh and slightly saltish underground water of active water exchange zone of the pasture lands and the conditions of irrigation of pastures of Kyzylorda region; application of remote sensing techni...

Several pots belonging to Neolithic cultures from the Romanian Plain contain crystals of brown hornblende. The brown hornblende is a calcic mineral belonging to the amphibole family, a highly complex series of inosilicates. Interestingly, the clay used as raw material for these Neolithic pots contains green, not brown, hornblende. No neighbouring sands (which could be added as a temper) contain such brown crystals. Therefore, the existence of the brown hornblende can be explained by in situ formation at the expens...

This work aims to analyze in terms of phenolic compounds of beverages obtained from indigenous plants, plants that are known in the specialized literature as being rich in bioactive compounds. Frum (2016) developed the identification method of the phenolic compounds, and this was based on a HPLC system, produced by Agilent Technologies 1200 Series, equipped with degasser, quaternary pump, DAD detector, automatic sampler with thermostat and column compartment equipped with thermostat. The measurements that were mad...

Sustainable development requires a multidimensional approach which takes into account at least three dimensions: economic, social and environmental. The defining characteristics of sustainable agriculture are: increased productivity; economic profitability; food safety and environmental protection. Through this work we try to analyze the influence of predominantly agricultural indicators on sustainable production and consumption in Romania. The study was made based on the statistical data available online, at Temp...

Around one quarter of the Romanian territory is covered with forests but the surface has been decreasing steadily due to increased legal and illegal logging and reduced efforts towards reforestation. This led to economic problems and uncertainties about the current stock and location of the Romanian forests. Very few empirical studies have been undertaken regarding this topic especially at the local level. Using data from 41 Romanian counties between 1995 and 2015, our paper aims to find the relationship between t...