Browse

ItпїЅs well known that sea buckthorn berries are rich in vitamins, carotenoids, flavonoids, and other biologically active components with significant therapeutically properties.The main polyphenolic compounds from sea buckthorn fresh juice were identified and quantified using HPLC-DAD method and the ?-carotene content was determined using the spectrophotometric method.The extractions were performed using four different solvents. The sea buckthorn juice was fractional extracted using: diethyl ether (Fraction A), me...

Since the dawn of time, housing has been closely linked to the characteristic natural environmental factors пїЅ geological, hydrological and climatic conditions occurring in a given area. Lack of knowledge acquired by our ancestors about the causes of processes and phenomena existence in both пїЅ natural and built environment, has led to the formulation of various hypotheses around this subject. One of them became the founding of the art that was focused on finding the right place to settle down permanently (miner...

Forest plays a multifaceted role, which is determined by its economic, ecological and social values; therefore, sustainable forestry development has to ensure a balanced use of all the values. For the first time in Latvia, the situation in hunting management was analysed, assessing the level of safety and traumatism. The research aim is to assess safety in the process of hunting and the real situation in Latvia. The research found that the most dangerous kinds of hunting were hound hunting and waterbird hunting du...

The hybrid expert systems are the most effective for solution of geological problems, because their knowledge base includes not only knowledge of experts, but also the regularities received as a result of the analysis of available databases. The prediction problem was the first among the geological problems for which the expert system technology was used for solution. According to the principle of consecutive detailing the main prediction-metallogenic taksons of the researched objects are needed to consider: metal...

In this study a hybrid model for one step ahead forecasting of mean daily discharges at the gauging ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????Daily discharges were modeled and predicted by the decomposition of the mathematical model of the runoff generation process into two components ?? deterministic and stochastic. For such approach the term hybrid is often adopted. The aim was to improve the forecasting performance b...

This paper presents some studies concerning hybrid power sources fuel cell, new generation photovoltaic cells with high efficiency and small battery based for High Altitude Pseudo-Satellites (HAPS). HAPS are recent entrants UAS-s in both directions of research of major aviation companies. Their goal is to replace services provided by classical communications and surveillance satellites, which show a high cost, with services provided by much cheaper technology platforms. It is exposed a state-of-the-art in the fiel...

The Paper present unconfined groundwater flow and solute transport modeling in water catchments area, Nerau village, using the PMWIN applications. Modeling purpose is to constitute extending pollution zone of aquifers in space and time generated of posible industrial pollution. Knowledge of extending of pollution zone is necessary to settle technical measures to using drinking water systems. The companion software Processing Modflow for Windows (PMWIN) offer a totally integrated simulation system for modeling grou...

With the designing of the A2 state road, section Kriva Palanka-Deve Bair, the route of the road intersects the Kriva Reka River in four spots. The bridging of the river in these spots is envisaged with bridge structures. The bridge structures are placed in sequence at a relatively short distance from each other (the distance between the first and the last bridge is about 600 m). In order to define the impact of the bridge structures on the river waterline and the environment, as well as the impact of the river on ...

The paper presents a 1D numerical modeling of the water flow on River пїЅAlbпїЅ, the village of Coroie?ti пїЅ S?la?ul de Sus in Hunedoara County, Romania, aiming to establish the influence of a hydraulic structure built on a left side branch, on the main river channel. The purpose for the hydraulic structure towards a trout fish farm, designed with respect to the enforced specific national regulations. The numerical model simulations are to support the study of water flows and levels on both the river main course ...

Hydric soils, named as Gleysols and Stagnosols, have formed under conditions of saturation, flooding or ponding long enough during the growing season to develop anaerobic conditions in the upper part of soil profile. If microbes are active (>50C), if the soil is saturated with stagnant water, and there is a source of usable organic matter in the soil, then redox feauter will result. In the region Banat, situated in the north west of Romania, there is a large area with soils that have water excess: hydric soils, wi...

Geochemical barriers are the special type of natural systems boundaries. They prevent the penetration of some of substances and are open for the migration of others. For the inorganic substances, especially for the metal ions the barriers are studied enough completely: the models of barriers are developed, the penetration and accumulation kinetic is assessed. But for the organic compounds the role of the geochemical barriers is practically not studied. Especially important are such assessments from the point of vi...

The Kungurian salt domes are widely pervasive in the Pre-Caspian depression, so that the post-salt Upper Paleozoic and Mesozoic deposits disturbed considerably by salt tectonics. Salt structures formed mainly in the upper Permian time, at the end of which salt massifs broke this thick stratum and they were intensively dislocated. In the Mesozoic period, there was a moderate redistribution of salt, which resulted in uplift of Triassic to Cretaceous deposits on the top of salt bodies. Salt movements affect the posts...

Shale gas potential assessments completed in 2010 for the Baltic Basin (BB) were very optimistic. They placed most of the central part of the BB in the gas window, indicating high prospectiveness of the most of Ordovician, Llandovery and Wenlock deposits. The paper presents results of multicomponent spatial geomodelling, which strongly modify this concept. The model covers area located in the central part of the BB, comprising Kartuzy Szemud and Stara Kiszewa concession blocks. Its area is about 300 km2 and it inc...

East Donbass is one of the oldest coal mining area of South Russia. The most significant change of surface and groundwater water quality. This study is devoted to the investigation of chemical properties of surface waters. The main source of the contamination of surface and groundwater are industrial and domestic wastewaters, drainage and mine waters. Surface waters within the region have high mineralization and water hardness. Water in springs and wells is unsuitable for potable use due to high salinity and hardn...

The area of the CSA mine is situated at the northern edge in the central part of the Most Basin (North Bohemia, The Czech republic). The interesting area, currently represented by the internal wastedump and the own openpit mine CSA, has undergone significant changes over time that are associated almost with coal mining activities. This activity hit especially hydrological and hydrogeological conditions of the area. The original surface was naturally drained by the several streams, which were necessary translate to...

This study aimed to assess the environmental conditions of the Upper Dnieper (the reach between the cities of Smolensk and Mogilev), based on the hydrological (depth, width and flow rate of the river), hydrochemical (water temperature, pH, conductivity, and dissolved oxygen). and meteorological (air temperature, atmospheric pressure, and wind speed) data obtained by the Complex Expedition to Explore Historical Waterways of Russia (пїЅKEIVPпїЅ), conducted by S.I.Vavilov Institute for the History of Science and Tech...

The article is devoted to the results of hydrometeorological research of the Black Sea, carried out on a stationary oceanographic platform located near the Southern Coast of Crimea at a distance of 600 m from the shore. The author represents a complex developed at Marine Hydrophysical Institute, for measuring such hydrometeorological parameters as wave height, wind speed and wind direction, atmosphere and sea temperatures, atmosphere pressure, relative humidity. In order to measure the wave heights the twisted res...

Along Bistrita River in the Eastern Carpathians is produced each year freezeup ice jams. Depending on the hydro and weather conditions these breakup jams have a larger or smaller spreading. Periodical ice jams cause damage and noticeable loss of lives. The article examines the area between the tail of Mountain Spring Lake (Poiana Largului) and Dorna Arini which has a length of about 80 km. Jams and ice accumulations occur usually in the downstream section between Poiana Largului and Borca. It would be preferable f...

The paper compares the different description of drought periods in the history of annual rainfall in certain geographical areas. Drought indices are indispensable tools in detecting, monitoring and assessing drought events. These indices include: the Palmer drought index or drought severity index, PDSI abbreviated, Keetch-Byram drought index, KBDI abbreviation, drought recognition or recall index, abbreviated RDI, percentage of normal amount (average value for over 30 years), standardized precipitation index, SPI,...

The ecological situation of the Arctic and sub-Arctic areas has been given special attention due to their extremely vulnerable environment. In comparison with other areas, the Arctic remains a clean environment, but heavy metals occupy a special place among priority pollutants. There are a lot of studies of heavy metals in the soil, but not enough information on the joint content and physicochemical factors that affect the metals accumulation in the Arctic soils. Therefore, this paper presents identification of co...

This study uses a pooling approach to identify catchments with similar flood characteristics in the Alpine-Carpathian region. The identification of similar regions is performed using the nonhierarchical k-means clustering algorithm and different sets of catchments characteristics (catchment area, forest cover, mean catchment elevation) and flood seasonality characteristic (concentration of flood around the mean date of flood occurrence). The optimal number of cluster is determined using the silhouette method. The ...

Satellite images analysis conducted using modern ERS methods allows to allocate lands which can be referred to the deposits based on a group of diagnostic indicators and using a number of techniques. Change of vegetation cover type associated with change of fallow lands use features is manifested in their spectral response, including the vegetation index values (NDVI). In the course of experimental studies the peculiarities of seasonal dynamics of vegetation index for the initial few years after the transfer of th...

The aim of this study is to contribute to the detection and identification of hydrothermal alteration zones in Variscan granites using magnetic susceptibility. The studied area is located in the North-western of Portugal and is characterised by the occurrence of Au mineralizations in quartz veins hosted in Variscan granites. Three different granite facies were studied, using two methodologies: (i) measurements, in situ, of magnetic susceptibility using a portable susceptibility meter (TerraPlus KT-10), allowing th...

The effectiveness of enrichment process of run-of-mine copper ore (at KGHMпїЅs ore enrichment plants) depends on the selection of appropriate working parameters of processing machines which are customized mainly to fit the fed rock type. Therefore, the knowledge of lithological composition of run-of-mine copper ore fed to the ore processing plant can significantly improve the effectiveness of the enrichment process. The issue of optimization of enrichment processes with the help of the use of in-situ sensor techno...

The central and northern parts of Poland are covered by a thick blanket of Pleistocene post-glacial sediment. Directly beneath this material lie loose, or of early diagenetic overprint, Neogene formations, mainly Miocene sediment. The thickness of Quaternary sediments in the northern part of the country locally exceeds 300 m. The loose and highly, internally diverse subsurface complex considerably hampers the completion of seismic surveys, especially those including the seismic reflection method. The basic issue o...

The paper focuses on investigation and evaluation of the existing situation of various types of brownfield in the field of their technical installations. These brownfields are investigated typologically and divided according to their types, sizes, and functional utilization. This is the base on which their technical attendance is evaluated, namely the designs of public utilities and traffic infrastructure, not only inside the premises, but also the assurance of their connectivity from the point of view of deeper r...

The key issue of Polish municipal waste management system is still too little progress in subjecting waste to recycling processes. Legislative changes implemented in this area are intended to build a rational and integrated system that meets the stringent requirements of the European Union. A set of requirements for the formal regulations generates the need for a comprehensive approach to waste flows between participants of the system. Adoption of such a course of action enables to meet the mandatory requirements ...

In recent decades the increase of the frequency of flash-flood conditions requires a correct identification of potential flood areas where these hydrological risk phenomena appear in Moldavian Plain. To identify the basins and localities exposed to flash-flood was used physiographic method. This method allows the opportunity to identify the river basins with the concentration of water from precipitations in less than 6 hours. Through successive sorting of the basins which may generate the flash-flood was identifie...

Mining generates a negative impact on the areas after stopping mining activities. Causing mines closed because of their specific, multiple and varied adverse effects on the environment by land degradation, by vertical and horizontal surface and sliding heaps and tailings ponds; polluted surface waters and groundwater; hydrodynamic imbalance of groundwater; negative influences on the atmosphere, flora and fauna; chemical pollution of the soil. Mining gold mine Barza - Brad is currently stopped, the mine was closed....

In the paper the precipitation of arsenic and iron from an acid drainage water of the Berikul mine wastes by using lime milk, NaOH, and Na2S were studied. The wastes were stored in the southern part of the Komsomolsk tailings impoundment, near the Komsomolsk settlement (Kemerovo region, Russia). The interaction of natural waters with the wastes produced ultra-acid drainage with a pH of about 2, with arsenic content of 1.3 g/l and iron - 6.5 g/l. The results of in situ experiments showed that adding lime milk and s...

The quality of the indoors is an important determinant of the health and well-being of the occupants. The indoor air quality is defined as an interaction between the climate, location, construction system, building materials, furnishing, building occupants, and all other processes within the building. The contribution deals with the assessment of perceived air quality related to human performance and productivity. The perceived air quality has significantly effect on performance and productivity. The indoor concen...

The present study aims to analyze the impact of the aridization process on the demographic evolution of the territorial systems, most affected by. The aridization process is a climate phenomenon, characterized by extreme climate parameters (high temperatures and low precipitation quantities). Three main counties in the southern part of Romania have been chosen as a case study (Mehedinti, Dolj and Olt counties). This is a geographical area where the aridization process is largely spread. In this area, a demographic...

Biological waste - so-called wet garbage - is one of the problems of efficient and clean waste collection. Due to their nature - they quickly decompose and cause unpleasant odor. Waste management of this biological garbage is possible in several different ways. They can be transported to landfill with other MSW. They can be segregated and collected separately and then processed in a collective way also in several ways. They can also be utilize in the place of origin. The paper presents energy analysis and environm...

The territory of Slovakia is in Central Europe at the interface of the parts of the continent that are influenced by continental and by oceanic climates. This is reflected in the variability of weather and climate characteristics. Apart from traffic load, change of climatic conditions are one of the constant external factors with adverse effects on physical and mechanical properties of different structural multi-layers in pavements. These impacts together with frost index and their corresponding changes significan...

The paper deals with the impact of mining near Uchaly city, Russia, on water quality in Uzelga River. Three deposits of copper-zinc sulphide ores are developed by underground mining. There is a quarry, a slime storage pond, a mining waste dump. The quarry was partly reclaimed in 1990s. At present the quarry receives water from two new deposits. Wastewater treatment plant operates in the mine. But the wastewater treatment plant does not provide standard water quality indices. The anthropogenic development of the te...

Consumers of organic products during the process of buying pay attention to information presented on the packaging, except for the product price and utility. Thus, food producers consider the packaging as one of the marketing elements and information included thereon, except for the informative function, also plays a marketing function. The objective of the article is to find an answer to the question: How information provided on the packaging influences the decision on the purchase of the organic product. To find...

The article presents the results of experimental research carried out on a real object and analysis of the effect of preparing oil-related waste with various physical and chemical properties for combustion in a marine auxiliary boiler, on selected components of exhaust gases, such as carbon oxide (CO), carbon dioxide (CO2) and nitrogen oxides (NOx) arising as a result of their burning. Oil-related waste comes from operating marine power plants; they are characterised by diverse compositions, heterogeneous structur...

Anthropogenic pollution originating e.g. from waste landfills can migrate into the ground and significantly change its properties. Moreover, the interaction between soil and pollutants may change soil behavior as well as cause geotechnical problems. The aim of the study was the assessment of the impact caused by inorganic contaminants on consistency limits (plastic limit and liquid limit) of fine-grained soils. Laboratory tests were carried out on bentonite, kaolin and clay using KCl, MgCl2 and NaCl solutions. The...

The Romanian eggplant growers get important productions in protected spaces, besides optimum natural periods. The average yields obtained from crops of grafted eggplants are with approx. 25% higher compared with productions of ungrafted culture. The experience was conducted at the Horting Institute Bucharest, Romania. The grafted and ungrafted eggplant plants were obtained and maintained during vegetation period according to the classic technologies, in some specialized greenhouses: a greenhouse specialized in pro...

The carbohydrate (2.9-7%), vitamins (A, B, B2, B6, C), salts of important mineral elements (K, P, Fe, Ca, I, Mg) and organic acids (0.5-1.5%) content from tomato fruits is very important. The tomato is widely cultivated all over the world and a very popular and important crop in Romania. The grafting is considered an important technique for the sustainable greenhouse vegetable production. This research was conducted on import tomato hybrids appreciated in south side. Two Lycopersicon esculentum rootstocks - пїЅEmp...

The threat of seismic activity is an inherent part of the operation in each of the three mines owned by KGHM Polish Copper JSC. It results from the high compressive strength of the rock, the high depth of retreat, and the significant tectonic of the deposit as well as human mining activity. There is no complete elimination of this threat, but adequate prevention is used to limit it. Impacts on this threat also include operational indicators such as advancement or progress and pace of mining work. The progress is d...

The aim of this article is to assess the impact of changes in particle size on the production yield during thermal degradation пїЅ pyrolysis process. For the purpose of this research the energy grass пїЅ black bent grass (Agrostis gigantea) was selected. The input material has been tested in four different granulometric fractions пїЅ original unadjusted material, crushed material, and also in the form of two kinds of pellets of different size. For pellets, the basic mechanical properties were determined пїЅ mechan...

Obtaining data on buildings by means of TLS (Terrestrial Laser Scanning) has recently become very popular as the time needed to take the measurements is significantly shorter than in the case of the traditional methods. The technical parameters of 3D scanners (digitizers) are becoming increasingly advanced, while the accuracy of the data collected using them allows not only to translate the geometry of a real-life object into a digital image, but also to evaluate its physical condition. This is possible due to the...

In relation with a study of arsenic pollution of groundwater in the Ogosta Valley, NW Bulgaria, a monitoring station was built in the floodplain in the upper reaches of the Ogosta River, not far from the town of Chiprovtsi. The observations took place at three adjacent sites including a hydrometric river gauge and two tube wells located closer and further from the river. River stages, groundwater level, water temperature and electrical conductivity were measured automatically at the three sites. Water pH, dissolve...

Water erosion is not only agricultural but also environmental problem. Water erosion washes off the finest particles that bind nutrients and other substances. These nutrients are piled up in the accumulation part of the slope. In the worst case, they are completely washed off the farmland, i.e. into water reservoirs and water courses. Additionally, damage to soil and its depletion of nutrients is reflected in lower yields. The aim of our study is to determine the effect of water erosion on total nitrogen content a...

River, dam, and lake banks are often attractive as a holiday destination for both domestic and overseas visitors. Therefore, different water based activities including water sports centres, as well as walking and cycling routes adjacent to water bodies require clean and environmentally green water. The places of greatest tourism significance need to be determined and their vulnerability to water quality is indisputable. It is in close connection to the pollution of water. Nowadays, the number of polluters of the H...

The contribution is focused on problematics of the impact of weather conditions to the phenological phases of broadleaved trees (Quercus robur L., Fagus sylvatica L., Tilia cordata Mill., Prunus spinosa L.) at the selected research areas in central Slovakia. There were recorded a 10% incidence of falling and yellowing leaves on a group of ten trees selected species. Factors taken in account were rainfall data, the number of tropical days and the length of growing season (June пїЅ August). The significant differenc...

The article deals with impacts of changes in forest composition and climate change on the runoff processes in the river basin in Slovakia. This work contains land use change scenarios of forest associations and also two scenarios of global climate change. Both of scenarios types of changes were prepared, and the runoff under the new conditions was simulated. Distributed rainfall-runoff models simulations are often used to evaluate the impact of such changes on the generation of runoff. These models have the advant...

The aim of this study is to analyse impacts of the acid atmospheric deposition and global climate change on water resource recharge and water quality in headwater catchments of the Jizera Mountains (Czech Republic). Since 1982, a long-term hydrological investigation has been conducted in the experimental basin Jizerka (100 ha, elevation: 860-980 m, clear-cut of mature spruce stands and reforestation) and forest catchments of three water reservoirs Bed?ichov, Josef?v D?l and SouпїЅ. The пїЅopen fieldпїЅ load of sul...

CRM is more than software or group of methods; itпїЅs a business education, which is consistently aimed at getting and keeping right customers. Commercial success each of company depends on relations with customers. Relation with customer will be effective or ineffective according as company has quality information about customer. In a last year we are able to see the need for higher and better degree of integration, co-operation and customer data-sharing between Sales and Marketing, which will improve the ability...