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Landslides are common and frequent geomorphic phenomena for the plateau regions in Romania having important consequences, especially economic ones, that needs designing scientific and technical plans for landslide risk mitigation. For this, an important preliminary step is assessing and mapping the landslide susceptibility. This paper examines a plateau zone in eastern Romania providing such a map, based on the landslides inventory, the digital elevation model (DEM) and the thematic layers of several factors thoug...

The microseismic monitoring is a method of monitoring of fracture propagation during hydraulic fracturing process. Hydraulic fracturing is a method of reservoir stimulation used especially for unconventional gas recovery. A matrix of several thousand geophones is placed on the surface of earth to record every little tremor of ground induced by fracturing process. Afterwards, the signal is analysed and the place of tremor occurrence is calculated. The detection of microseismic event is not trivial especially in noi...

This study aimed to assess the potential of renewable energy resources in Romania and the potential of distorting the energy resources consumption. In this respect, the authors compared the status of Romania with the status of two other countries, Estonia and Croatia, selected as their development of resource use productivity compared with the GDP expressed in euros, with 2010 as the reference year, is the closest to the growth Romania saw in 2000-2015. By considering, as measures, the average GDP in constant pric...

Proper estimation of geomechanical parameters of the shale gas reservoir has a crucial influence on the stimulation treatments designing and therefore on hydrocarbon production from unconventional reservoir. The brittleness is the most commonly used parameter for locating the geomechanical hotspots in the reservoir. This parameter can be estimated using elastic, dynamic rock properties such as Poisson Ratio and Young Modulus obtained from sonic logs. The seismic waves velocities recorded by the sonic logging tool ...

For identification of pollutants, assessment of integrated toxicity biotesting is especially perspective. S. cerevisiae yeast is a convenient model eukaryotic organism for carrying out toxicological researches and an economic alternative to use of animals in biotesting. However the known biotests with use of yeast differ in labor input, demand the special equipment. We have offered express test-reaction with use of S.cerevisiae. It is known that S. cerevisiae as yeast of riding fermentation intensively forms foam ...

The potentially toxic genus Pseudo-nitzschia H.Peragallo, 1900 is common for the phytoplankton community in the Bulgarian part of the Black Sea often proliferating to bloom densities. The highly similar morphological features hamper the precise species discrimination by light microscopy and an accurate identification requires the application of more sophisticated methods. In this study we used genus specific large subunits ribosomal DNA (LSU rDNA) primer pair in order to elucidate the species diversity within Pseu...

The purpose of the paper is inventarization, mapping and valorization of coal mining waste dumps, which occur in the area of Gliwice city (southern Poland, NW part of USCB), for the needs of reclamation and management of examined objects and defining potential recovery of coal from the dumps. Valorization of post-mining waste dumps has been done using original methodology, considering problems of reclamation, management, accessibility of the dumps as well as environmental hazards. On three valorized post-mining wa...

The Zechstein Main Dolomite (Ca2) is one of the largest petroleum bearing formations in Poland. Numerous hydrocarbon deposits occur within Ca2 in the carbonate platform sediments of the Polish part of the Southern Permian Basin. Application of modern methods allows evaluation of porosity and pore size distribution and enhances the proper characterization of reservoir rocks in non-invasive way. The study concerns lowfield Nuclear Magnetic Resonance (NMR) measurements conducted on Ca2 carbonate rocks from P-1 well l...

The study aimed to evaluate the variability of some morphological characters and the correlations between these at black pine. The biological material was represented by four populations of black pine, two of southwestern Romania (Herculane and Svinita) and two of central Greece (Kerasia Evia and Ano Polidrosos). The experimental data were collected by biometric measurements conducted "in situ" and were statistically processed in order to determine the variability within the populations, but also the correlation c...

Modelling of fine particulate matter (PM2.5) requires new approaches for the evaluation of population?s exposure and associated health effects in various urban microenvironments. Such decision support tools are assisting local authorities in adapting proper plans for minimizing the resulting ecological and epidemiological impacts. An environmental decision support system (EDSS) with web-based GIS capabilities was developed to allow for examination of PM2.5 fraction concentrations in Ploiesti city, Romania. The air...

Lowering energy consumption in the residential sector is one of the main priorities in the European Union. This can be achieved by increasing the thermal insulation of the buildings and using renewable sources for energy. One of the most common solutions is the use of heat pumps to produce thermal energy for heating / cooling indoor spaces and for domestic hot water. The geothermal heat pumps are used, but with increased efficiency of air/water heat pumps, they become effective solutions. This work studies the eff...

This study investigated the degree of heavy metal accumulation in fruits, leaf, shoots and associated potential health risks in agricultural areas of the Mitrovica city, northern Kosova. Total concentrations of lead (Pb), cadmium (Cd), nickel (Ni), arsenic (As), zinc (Zn), copper (Cu), chromium (Cr) and iron (Fe) were determined in soil and fruits, leaf, shoots apple tree with rootstock MM106. Samples collected from agricultural areas (near Mitrovica city), have been analyzed for heavy metals (Pb, Cd, Ni, As, Zn, ...

Nanomaterials have become so popular thanks to new and unique properties differing them from their classic counterparts. One of the nanomaterials which is commonly used nowadays is graphene and its derivatives. This paper demonstrates the results of laboratory-scale experimental works on the influence of ultra highly concentrated single-layer Graphene Oxide (HCGO) on properties of water based-mud (WBM). GO is a mono-layer of sp2-hybridized carbon atoms derivatized by a mixture of carboxyl, hydroxyl and epoxy funct...

This paper presents an assessment of power generation losses of a hydropower plant (HPP) due to an imposed reservoir management plan and comparisons in terms of monetary value with the existing management plan but with an eutrophic reservoir. The study case is represented by Gole?ti reservoir, which is a shallow reservoir in Romania, and the associated HPP. Gole?ti reservoir is an artificial lake of medium size, which has a 55·106 m3 volume and a maximum depth of 32 m. Its use is complex: it allows flood control, ...

The work is devoted to the new calibration method for vector geomagnetometer in the visualized coordinate system, which is connected with the body of the instrument. Standard navigation aids allows to transform geomagentic vector in the visualized coordinate system to the global coordinate system. It can be used for linking the received magnetograms to the coordinates on the terrain. The method allows to take into account the non-orthogonality of sensitive axes, difference of sensitivity and offset of magnetic fie...

Nowadays in buildings energy supply the various combinations of the district heating, electricity and natural gas systems are used for heating, hot-water supply, cooking and etc. At the same time due to the development of energy saving technologies the available generating capacity on various types of energy has appeared and the competition among energy supplying organizations may occur. Therefore, we need to consider the impact of such decisions on the development of all types of engineering networks in specific ...

Lake Suturuokha (69'06 "N, 145'23" E) is a unique lake within the Indigirka River basin, which is located on the border of the forest-tundra and taiga in the north of the Republic of Sakha (Yakutia). Formed due to the influence of glaciers of several glaciations in the late Pleistocene, the lake has a large area (69 km2) and comparatively shallow depths (2 - 2.5 m). Because of its unusual genesis and low study, the lake is of great interest to scientists. In August 2015, in the framework of the research expedition...

Our paper presents the newest results of bathymetric measurements and underwater objects investigation on the fragment of Narew river between Granary and Modlin Fortress. The historical fortress and the Granary founded by the Polish Bank are both well-known historical places in Poland. Archaeologists and historians are still analyzing the history of these buildings. The main objective of the work was to elaborate a bathymetric map and a database of underwater objects. The necessary data for elaborations was collec...

One of the main factors influencing the accuracy of the obtained lumber is the rigidity and stability of saws. In the process of sawing woodcutting tools heated. This phenomenon can cause a loss of rigidity and stability of saws. A log frames and band saws negative influence of heating can be compensated the additional tension and setting directing. Particular importance is the heating of circular saws due to the appearance of a temperature gradient along the radius in the process of sawing wood. Upon reaching the...

Pig breeding is a profitable activity for small and large farms, being currently influenced in an increasing extent, by the international competition in this area. As a result, pig breeders must keep pace with changing technologies and production techniques to maintain the competitiveness of their farms. Also, it is necessary to take into account the new European regulations, particularly those relating to the environmental protection, the comfort of animal and food safety. The objective of this paper represents t...

With the theoretical concepts of mobilism discusses the features of the geological structure, age and ore potential of intrusive-dyke belts in the Carboniferous-Permian of Eastern Kazakhstan. Emphasizes the genetic relation of gold deposits with prebatholithic belts the North-Western direction, represented fault small intrusions and dykes Qunush complex (C3) collisional type, and spatial distribution in them later imposed rare metal mineralization of the contact-metasomatic nature. Rare metal deposits are characte...

Conditions of the microclimate prevailing in mine workings are one of the most important factors influencing on the comfort and safety of the working mine crews. This climate depends on parameters of the ventilated air stream and conditions prevailing in these workings. Parameters having the most important influence on the conditions of microclimate are temperature of the air and rock mass, humidity, velocity of air stream and average temperature of radiation of wall surface of the working. Nowadays, due to the la...

Water jet technology is friendly and belongs to green technology. Water jet technology is divided depending on whether the water is used only water or a mixture of an abrasive and water to clear water jet and abrasive water jet technology. It is possible to divide as the paper material to the steel. This progressive technology is applied in various sectors of industry. During the cutting operations creates the waste in the forms as used abrasive material, polluted water, sludge, used material and other rest materi...

The aim of this work is to present the current state as well as a forecast for coming years in sewage sludge management in Poland after 1 January 2016. New law policy adopted from 1 January 2016 forced certain changes in communal sewage sludge management. Now communal sewage sludge is forbidden to be stored (calorie than 6 MJ / kg), therefore there was a need to increase a percentage share of other methods used for sewage sludge management. In addition there is an expansion of a waste water treatment plants and se...

Currently, terrestrial laser scanning is one of the most common method of measurement used for registration of the shape of objects. This technology enables in short time to designate huge collections of spatial data, known as point clouds. Due to the amount of occupied memory, storing large data sets becomes now a big problem. One solution is to create algorithms that allows to reduce the amount of recorded data without losing the essential spatial information. On the market there are mostly paid programs, that a...

Well logging is usually used for monitoring the technical condition of the wells. This means whether there is degradation of the casing (potential subsurface damage of well) or not and uncontrolled overflow behind casing?s strings. Measurement is able to cover both the static state of change saturation and the dynamic process of the ongoing spill in the relevant horizon. Furthermore, if there are monitored overlying horizons because of gradual overflow and saturation of the storage gas caused untightness of wells ...

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...

The purpose of this study was to determine an optimal variant for producing skimmed stirred yoghurt with chia powder. Three variants of product with chia powder at levels of 0.3%, 0.5%, respectively 0.7% and two control samples have been manufactured. Chia was used due to its remarkable content in fibre, ?-3 and ?-6 fatty acids, polyphenols, which are essential compounds for a healthy human body. The physicalchemical parameters (acidity, pH, dry matter) and rheological properties of yogurts samples were determined...

Healthy and safe working conditions underground, especially in areas with potentially explosive atmospheres depend mainly on the method of operation and management of the ventilation system. For underground extraction of coal are running a complex network mining vertical, horizontal and inclined role extraction, transportation and evacuation the surface. Associated system of mining works has the air network to ensure the oxygen necessary for workers, diluting explosive gases and toxic substances and preparations t...

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...

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 ...

Geotechnical works are closely related to civil engineering works, both in the initial phase of a construction and, in special cases, after the construction when new structures are built in the vicinity. Depending on the foundation ground capacity, many types of works must be developed such as various pile driving methods, slope containment, deep excavation, ground improvement or treatment, etc. Associated with special types of works there are the vibrations propagated in the ground from depth to the surface which...

The paper deals with the oil recovery problem, research methods for heterogeneity parameter determination in oil-bearing horizons and its influence on the reservoir porosity and permeability. The article describes the author's lithologic-and-petrophysic anisotropy detection method. This method allows quantifying the directions, quantities, the lateral heterogeneity influence probability in the reservoir and takes into account its possible manifestation in the field development process. For measuring magnetic susce...

Dynamic of the degradation processes is a complex issue in the light of the factors that converge to this, which can be direct, of natural origin, as a consequence of climate change or global or local climatic anomalies and are relatively easy to identify, as regards the characteristics of topography, vegetation coverage, soil etc. to which are added indirect factors, predominantly anthropogenic, that acts like a catalyst stimulating the degradation of soil resources and its attributes that sustain life. B?r?gan P...

Isotopic composition of noble gases and other volatiles (CO2, N2) from minerals of corundum-bearing rocks with isotopically ultralight oxygen from Khitoostrov deposit have been investigated. The studies were conducted on Finesse mass-spectrometry system [1] using step heating in temperature range from 200?? to 1400??. The following minerals were investigated: corundum, amphibole, garnet, staurolite. For the same samples, differential scanning calorimetry and thermogravimetry curves have been obtained. The first re...

The handling and disposal of voluminous sludge produced from water treatment plants poses difficulty to environmental scientist and engineers. In fact, its environmental friendly management and disposal is challenging task and requires careful consideration. In this study, sewage sludge ashes were examined as potentially supplementary cementitious materials. The raw sewage sludge was provided by two different municipal waste water treatment plants, coming from Poland and Greece respectively. The calcination of pre...

Providing the environmentally healthy conditions in rivers is main prerequisite to guarantee the sustainable river ecosystems development. This is connected to implementation of various measures accounting the increasing anthropogenic and climate change impacts. For the purpose on local, national and international level various tools and practices are implemented following the adopted legislation. For the countries of European Union Directive 2000/60/EC (WFD) stipulates main framework for community action in the a...

Despite the common application of a wide variety of IT solutions in organisations, one may relatively frequently come across processes under which information is manually processed by employees, and even if specific IT tools are used for the processing, the extent of operations conducted manually remains considerable. In numerous cases, similar processes may be supported by tools created using spreadsheets. Such tools can be developed by means of a rather narrow array of embedded spreadsheet features and mechanism...

The process of Underground Coal Gasification involves risks of uncontrolled/unpredictable course of the gasification process. To minimize the risks of contaminants leaking outside the georeactor zone in the event of emergency is of a significant importance when aiming to maintain safe course of the process. The article presents methods and measures aimed at reducing the risk. These methods are based on reduction of the impact of released gaseous contaminants generated during the process. In order to achieve it, a ...

When coal preparation, particularly suitable for coking created considerable amounts of sludge. Most of the technological operations is taking place in water environment. Raw sludge at a time when technology was not yet at such a high level as today and emergency overflows were deposited in tailing ponds. This is practiced on coal districts in the Czech Republic and Poland. The purpose of this section was to analyze the possibility of another flotability of coal sludge deposited in settling ponds of company EKO CA...

New building materials were obtained in the last decades by using different types of cements, aggregates, additives or additions. Additions such as s powder, aggregate, fiber, etc. were tested for obtaining new properties of concrete or for finding a way to consume the wastes. The paper presents the experimental results obtained on fly ash concrete with waste fibers. The concrete was prepared with substitution of cement with fly ash in different dosages (10%, 15%, 20%, 30% and 40%) and two types of fibers (hemp an...

The article presents the way of conducting a forecast of leverages of underground mining run by longwall fronts in three deposits of hard coal on the area. The forecasted values of subsidences, inclinations and curvatures of mining area were calculated by the Budryk- Knothe theory with the use of typical values of its parameters, namely, a coefficient of subsidence of floor rocks equal to 0.8 and tangent of scope angle of main leverages amounting to 2.0. The forecasts of indicators? values of area deformation were...

In our paper we deal with the evaluation and comparison of precipitation totals and interception in living and dead climax spruce stands at a research plot of ?ervenec during the non-vegetation periods (from approximately October to May) in the years 2012 - 2016. The difference in interception was analysed from October 2012 because during the summer 2012 the forests in the area died due to the infestation by the spruce bark beetle (Ips typographus). The research site is located in the Western Tatras (Slovakia) in ...

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...

Jiu Valley represents one of the most important areas for coal mining in Romania, thus industrial development has generated a high level of health and safety at work issues. At work places in mining industry, the staff of the woodworking workshops is exposed to various concentrations of dust, possibly leading, in time, to occupational illnesses. Thus, wood processed in mining units? workshops is utilized for temporary support of coal faces, wrapping underground mining, insulation dams, ventilation doors, etc. This...

This work has pursued the accumulation process of aromatic compounds such as esters in three varieties of Romanian native wines from Apoldu de Jos, namely Feteasc? regal?, Feteasc? alb? and Iordana, obtained by fermenting them in a microvinification system, in a bioreactor equipped with temperature sensors for pH and CO2. The pectolytic enzymes Enozym flavors (3g/100 kg) and selected Vinartis ferm yeasts as Saccharomyces cerevisiae strain were used for the alcoholic fermentation. To identify and quantify the ester...

VRAGEO Project - Integrated Seismic Hazard Information Platform for Vrancea Zone Surveillance Through Advanced Geospatial and In-Situ Methodologies ? have as main objective to enable free and open access to seismic hazard information in Romania due to Vrancea source in support of GMES (Global Monitoring of Environment and Security) through the development of an operational framework, a set of supporting tools and advanced geospatial surveillance methodologies of Vrancea tectonic active region. Information derived ...

The trace element composition of endorheic saline lakes (with total dissolved solids varies from 1 to 590 g/L) of the Altai Region (Russia) is of undoubted interest from the point of view of their mineral resources. Among the trace elements in lake waters, high content of boron (up to 78 mg/L), bromine (up to 820 mg/L), lithium (up to 3.6 mg/L), strontium (up to 13 mg/L), iodine (up to 6.3 mg/L), and arsenic (up to 0.6 mg/L) have been determined. The content of uranium in the investigated lakes varies over a wide ...

The paper presents a new method of determining the energy consumption for vibratory crushing. Using the laboratory vibratory jaw crusher with kinematic actuation of the jaws, the study of determining power consumption while crushing limestone and diabase was conducted. During the study, electrical energy used on the crushing process was measured as a function of changing design and kinematic parameters of the vibratory crusher, i.e.: jaws stroke, the outlet gap size and frequency of jaws vibration. The article pre...

Today, growing number of ransomware attacks from the cyberspace is getting more and more attention as the danger of immediate closing of business for attacked organizations rises dramatically. High level encryptions used by current versions of ransomware makes it almost impossible to be decrypted in the real time and probability of production going live again for attacked organization could be low. Estimated revenue up to 1 billion USD in 2016 makes this type of cybercrime activity very popular within the hackers?...