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Meta-siltstones are solid sedimentary rocks containing some clay material. Such geomaterial is taken mainly for the production of cement and garden paths. It can also be found in coal mines between coal beds. Processes of technological extraction of such natural material are always connected with the problems of its physical and mechanical behavior, therefore it is important to evaluate the basic deformation-strength properties. Moreover, if we consider the influence of the scale factor, we will get a more complet...

Oil-saturated Visean dolomite reservoirs were studied from the Tatarstan Republic, east of Russian platform. The main methods of study were X-ray and SEM analysis. Dolomite forms interstratified dense and porous layers with thickness of 0.5-4.0 m in oil-saturated parts of reservoirs. The dolomites are characterized by rhombic form of crystals. Many of them have crystal growth zones as alternate micro-layers with different iron content. In the pore space of dense dolomites find some iron accessory minerals such as ...

Digital Elevation Model (DEM) describes the physical and topographic information of earthпїЅs surface. Today, DEM produced by different methods is successfully utilized in many geospatial applications such as gravimetric geoid determination in geodesy, morphology analysis in geology, topographic map production in cartography etc. As known, every year, the new satellites are launched to space and provide the most current information about the earthпїЅs surface with different working principles and different image t...

Generally speaking, a software interface may refer to a wide range of different types of interface at different levels: an operating system may interface with pieces of hardware. Nevertheless software interface can be use in order to extract a specific desired data format from a certain amount of data volume. In surveying, once with the topographic electronic equipment evolution, the possibility of getting field data measurements has very much increased as much as data volume but also as data quality. One of the m...

The G.I.S. It is used to create, store, analyze and process information spatially distributed through a computerized process. GIS technology can be used in various scientific and practical. G.I.S technology is increasingly used in the field of cadastre. To use technology G.I.S. in cadastre we must have both graphical database and the type attribute must be focused on cadastre requirements. Items graphic database is collected by conventional measurements, measurements GPS, photogrammetric measurements, through digi...

At uranium ore deposits surface waters and local streams are important for the environment. Because these are affected by uranium-bearing acid mine drainage and dissolved uranium is moderated by dilution and sorption uptake by stream sediments. Depend on the mineral alteration and in the case of the iron existence, acid drainage forms in the streams. In this case surface waters and streams become a significant mechanism for mobilization of suspended uranium particles. The aim of this study is to assess the acid mi...

One of the main problems in the exploration of porphyry copper deposits is the process of acid rock drainage and metal leaching (ARD/ML), that develops during storage enclosing rock in a dump. ARD/ML is formed by the natural oxidation of sulfide minerals exposed to air and water. It leads to the production of acidic, sulfate waters and results in the heavy-metal contamination of surface and ground natural water. Standard procedures for the evaluation of waste rocks ARD/ML potential are static and kinetic tests. St...

The paper presents a method for authenticating images that were shot using a mobile phone. Thanks to the newest advances in integrated cameras, smartphones represent one of the most popular ways to take a photograph. A picture could be critical evidence in a trial and, with the abundance of free editing software, a forgery is easy to achieve. A method to secure and test photographs for authenticity was developed, implemented as a mobile application, tested and detailed in this paper. The watermarking algorithm is ...

The technology of microbial fuel cells (MFC) makes it possible to obtain electricity by eliminating and utilizing wastewater components [7]. The promising biological agents in the MFC are microbial associations. The presence of strains of different species of microorganisms allows consortia to consume a much wider range of compounds. Multicomponent makes them more resistant to negative environmental influences. An example of such associations is the sludge of treatment facilities. As part of most wastewater enteri...

The study pertains to a regional and local context of the adaptation to climate change and explores the main international and European Union decisions in this regard, as well as the goals set for Latvia. The concept of adaptation is clearly connected with the drafting of sustainable development policy and must be handled at different levels. The study analyses the examples of international and local projects used in the situation of Latvia and the documents drafted by local governments, facilitating implementatio...

Wastewater treatment plants are essential in terms of environmental protection. The processes taking place into wastewater treatment plants are complex and require specialized machinery and equipment capable of operating in special conditions. Starting with the Sequential batch reactor (SBR) system (biological mechanical, chemical processes are carried out in the same basin), it could be reached a complex architecture with separate tanks, resulting scheme with predenitrification-nitrification, nitrification-postde...

In this study, cobalt oxide (Co3O4) was prepared by thermolysis of cobalt (II) oxalate at ???????????? This oxide was characterized by IR spectroscopy, XRD (X-ray diffraction) and SEM (scanning electron microscopy). The adsorption of phenol and lead (II) ions, both singly and in combination, by obtained and characterized Co3O4 was studied in batch system. Kinetic and equilibrium experiments were conducted to study the effects of solid : liquid ratio, pH, contact time and initial concentration of the pollutants. Th...

The availability of drones and other types of UAVs makes this method very popular for gathering spatial data for different purposes. The derived orthophotos and digital surface models have wide usage in many branches. One of the UAV survey mission requirement are the Ground Control Points (GCP) allowing the resulting data to be georeferenced and overlaid with other data sources. Some UAVs may be equipped with the IMU (Inertial Measurement Unit) and precise GNSS receiver пїЅ the Trimble UHX-5 in our case. The quali...

This paper deals with disinfection of drinking water at пїЅAquatim S.AпїЅ. The disinfection plant is part of an investment plan to provide conformation with the Romanian Law 485/2002 concerning drinking water quality and European Union Water Frame Directive. The new facility employs modern techniques of storage, dosage, injection and neutralization of chlorine. Under these circumstances, the risk of chlorine leakage decreased and increased the accuracy of chlorine dosage. The regulation and control of the process ...

Coal mining causes undesirable terrain subsidence due to caving in of the overlying rocks into the already excavated space. Subsidence deforms the terrain, damages structures on the surface and water flows, which results in the formation of inaccessible wetlands and swamps, and these areas need to be reclaimed. The problem of large flooded areas as a result of mining activities also concerns an area known as пїЅKozinecпїЅ, which is located between KarvinпїЅ and Doubrava in the Czech Republic. That territory has lo...

The aerogel is a nanomaterial that may represent a viable alternative to the traditional thermal insulations, especially when it is required an increase of the thermal performance of the building envelope elements and also a reduced thickness of their finishing layers. The paper presents the conclusions of some studies regarding the thermal behaviour of the aerogel and also some improvement possibilities of this material and of other materials, by integration of the aerogel in their structure. At the same time, th...

In order to design the RNAV (area navigation) precision approach (PA) or nonprecision approach (NPA) there is a need to collect vital information on runway, aerodrome obstacles, and other important factors that support approach and landing procedure. Therefore, the development of RNAV flight procedures requires the acquisition of relevant field data on objects that affect flight safety during its decisive stages. Designing of flight procedures, updating aerodrome maps and aerodrome obstacle maps, creating obstacle...

Nowadays, green technologies and agri-environment measures play a vital role for sustainable development. Taking into consideration that more than a half of the Romanian land is farmed, agriculture is very important for the Romanian natural environment. The aim of this paper is to provide a detailed picture of the Romanian agri-environment measures and to outline the importance of agri-environmental protection for sustainability of agricultural systems, habitats, and rural area. In this paper, we included a docume...

The new era of SAR exploitation started with the launch of Sentinel-1A and 1B satellites providing dual-polarized VV/VH imagery, free of charge, with unprecedented revisit interval of a few days over very large swaths. The research questions addressed in this paper are: how to process efficiently big set of multitemporal Sentinel-1 images in order to retrieve correctly classified agricultural crops for inventory purposes? How to reduce the amount of data and the redundancy of information resulting from very freque...

This article discusses the questions of agroecology, its role and significance in the modern economy. It emphasizes the impact of agroecology on food production, country food security ensuring, as well as contribution to the sustainable agriculture. The authors also accentuate the relationship of agroecology with sectoral clusters, which are one of the modern forms of economic activity organization in agro-industrial sphere of Russian Federation economy. The article describes preconditions of the clusters formatio...

This article is presenting a measurement system and procedure used for air pollution assessment and air quality evaluation/warning, with mobile and fixed terminals, located in the proximity of two thermal coal power plants, as well as the software used for data acquisition and interpretation. All the measurements were performed by the Politehnica University in Timisoara (mobile platform on vehicle) and by the Romanian Agency for Environmental Protection (fixed platforms, but located at some distance from the plant...

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...

Airborne technology developed rapidly in the last decade offering solutions for both data acquisition and surveillance purposes. The same technology can be used by no specialists for entertaining reasons or by governmental companies for security issues. However, there are several matters that the two will look for the acquisition characteristics and the data processing software. Nowadays as an alternative for airborne technology are used Unmanned Aerial Vehicles. An Unmanned Aerial Vehicle is a system composed by ...

In connection with the requirements of energy saving and reducing greenhouse gas emissions, the current construction is characterized by high levels of airtightness of the building envelope. On the other hand, high levels of airtightness can be the cause of poor indoor air quality due to inadequate ventilation. Energy savings and ensuring the quality of the indoor environment are two confronting requirements of the current construction. The airtightness can be defined as a resistance of the construction to infiltr...

The major changes occurred in Romanian mining industry imposed by the transition to the market economy, concentration of extraction to fewer output units in deeper seams, the high gas emission rates and coal rank, other current specific trends requires new methods to produce the optimum design and operation of a safe and economic methane drainage system. Under the circumstances, the paper describes a mathematical model together with a computer-aided optimization strategy to assist the analysis of the differences b...

This paper presents the integral equations of the direct problem of magnetic prospecting with respect to demagnetization. These equations are derived for a two-layer medium model. The method of determining the intensity of a secondary magnetic field for the case of magnetizing by a static field, which potential is a harmonic function, is described. The respective integral equations are written based on the theory of a simple layer potential. An iteration algorithm for solving the three-dimensional structural inver...

An effective development of underground space is impossible without the use of modern systems of underground navigation. And the high-precision inclinometric survey is one of the main problems of such systems, as well as the complicated systems of drilling rigs, which are usually used in the construction of oil and gas wells. As a result of research described in the paper the authors scientifically prove a necessity of new special indices of geomagnetic activity introduction. Also the algorithm of their calculatio...

Tomatoes represent the host plant for the pathogen Phytophthora infestans. Together, as plant and pathogen, create a system named by A.R.ROBINSON pathosystem [1]. The plants are known as producers of many metabolites such us therpenes, alkaloids, flavonoides and amino acids. From this point of view naturally occurring substances present in different plants can represent a continuous resource of biological agents. Late blight of potato (Phytophthora infestans Mont. de Bary) is a serious threat to potato production ...

One of the main environmental issues of society today is the continuous increase in the amount of organic waste. Sustainable organic waste management no longer supports old practices that involved uncontrolled releases, landfill storage or incineration. A potential solution is converting organic matter into energy. Previous papers dealt with energy recovery of animal proteins and fats from tanneries into biogas and biodiesel after separation of the two components by pressing-centrifugation at temperatures of 60-80...

The concern about the environmental contamination by 241Am is caused by the fact, that its half-life period is longer and its mobility is much higher than that of parent plutonium. That is why in soils and sediments the specific activity of the radionuclide increases over time. The alpha-decay energy of 241Am and the relatively short lifetime of the isotope create high specific radioactivity and thermal yield. In bottom sediments, the ratio of 241Am to 241Pu increases every year. All these factors result in a high...

An original approach to studying acoustooptic interactions at infralow frequencies using seismic vibrators is proposed. The authors in numerous and natural experiments has been proved that such sources can radiate low-frequency acoustic oscillations, propagating in the atmosphere up to hundreds of kilometers from the source. High-precision metrological properties of vibrators on frequency-time characteristics open up possibility for investigating acoustooptic interactions at infralow frequencies. An acoustooptic s...

Land consolidation is a fundamental instrument for agricultural management, allowing complex changes in the agricultural and forest space. One of the primary goals of land consolidation, directly specified in the Act on land consolidation, is to improve farming and forestry conditions, through the correct farmland location shaping and the correct property boundaries formation. In Poland, consolidation is possible owing to EU funds the Rural Development Programme 2014-2020 (RDP 2014пїЅ2020). The agro - forest bound...

The article compares power gains from horizontal polycrystalline and vertical monocrystalline photovoltaic installations operating under identical, real-world conditions in the city of Olsztyn. The study was conducted between 1 October 2014 and 31 August 2017, excluding a monthly downtime period between 24 January 2016 and 2 March 2016 which occurred due to unexpected technical difficulties. The paper analyzes the long-term efficiency of monocrystalline and polycrystalline photovoltaic installations under the real...

Hydrostatic transmissions create compliance between rigid functional parameters of a power-machine, e.g. an electric motor, and flexible functional parameters of the work machine, e.g. a crane hoist. Hydrostatic transmissions equip fixed or mobile machinery and guidance systems for: aviation, artillery, wind turbines, hydraulic turbine blades, etc. Any hydrostatic transmission includes at least two positive displacement machines: a pump, called transmission пїЅprimaryпїЅ and a motor, called transmission пїЅseconda...

Lithium, the alkaline metal, causes a great excitement in scientific as well as in media scene. His lithic mineral zinnwaldite attracts great attention to a deposit in CпїЅnovec in Ore Mountains. A lithic locality can be found in the Northern Bohemia and it is well-known due to its sources of ore raw material for years. Tin, silver and wolfram were extracted here. Lithium was not utilized in the past and that is why it sometimes happened that a greater part containing lithium was not used. However, this was change...

The article presents the analysis results of the physical environment of the data transmission between the technological equipment of automated dispatch control systems via interface RS-485. One of the ways of energy supply and life support systems improving in the part of energy efficiency increasing is distributed facilities automated dispatch control systems (ADCS) application. Because of control centralization of distributed heterogeneous engineering systems of buildings with multivendor devices and different ...

Multi-access Edge Computing (MEC) is a new information technology that brings Cloud capabilities into the Radio Access Network (RAN). The vicinity to end users allows applications with requirements for wide bandwidth and low latency. MEC services provide direct access to real-time radio network information which enables offering of context-related applications. The communication between MEC services and applications is based on Service Oriented Architecture (SOA). In this paper, an approach to definition of Applic...

The paper considers the problems that arise in the process of seeding in the production of sapphire single crystals by the method of Kyropoulos. This stage is the most important in the entire technological process, but at the same time the least automated. An approach is proposed for visualization of this stage, using technical vision. It is based on the processing of images received from the ip-camera. To observe the dynamics of growth and the crystallization front at the stage of seeding, we reviewed different a...

Wis?ouj?cie Fortress is a historical defensive object located on the southwest coast of the Gulf of Gda?sk. Fort Carre, Eastern Sconce and Ravelin are parts of this postmediaeval fortification. In view of planned regeneration of this fortification complex, at the initiative of the Gda?sk History Museum and Institute of Archaeology and Ethnology of the University of Gda?sk it was decided to perform a documentation of one Fortress object. Authors decided to report the three-dimensional documentation to perform a ser...

According to the geological maps of southern Spitsbergen, faults commonly run parallel to the glacier valleys' axis. General faults orientation is N-S and NNW-SSE. This may suggest, that the origin of glacier valleys is related to tectonics due to development of structural landforms on individual faults. The network of ground penetrating radar (GPR) profiles based on measurements on three glaciers of southern Spitsbergen: Recherchebreen, Hansbreen and Werenskioldbreen, was processed and interpreted for the presenc...

The article presents the exposure of forestry activities in the most deforested counties of Romania пїЅ Suceava County. We have conducted a local economic research based on the forestry activities from that county. The database used in this research consists from the National Classification of the Economic Activities, codes at 4-digit level for each territorial administrative unit. The article focuses on the particular situation from the deforested communes: CпїЅrlibaba, Poiana Stampei, Iacobeni. It also presents ...

Deposits located in the region from Ostrov up to Chodov are mainly known for their high quality deposits of kaolin non-metalliferous raw materials. Among others, the deposits contain a large amount of micas that are not used within production of kaolin concentrates. Within their structure, these micas can contain metals of alkaline soil - lithium, rubidium or cesium in particular. Due to new technologies, these metals get the greatest focus and their sources are being looked for all around the world. In the first ...

The aim of this paper is to propose an improved algorithm for estimating the risk of bankruptcy of the Bulgarian insurance companies. The algorithm is developed based on the multi-layers neural arhitecture with input dates represented by values of indicators from the financial statements of Bulgarian insurances companies. The memory of the neural network will provide informations about the risk of bankruptcy. Development of the neural model (algorithm R2b2n- risk bankruptcy of Bulgarian insurance companies with ne...

Testing and certification of explosion-proof electrical equipment required for product conformity assessment are extremely important, taking into account the unexpected hazard of explosion occurrence due to potentially explosive atmospheres generated by mixtures of air-gas/dust. The explosion risk has to be minimized in order to ensure the health and safety of people and for preventing material damages. The new European Directive which regulates the protection to explosion field is the ATEX Directive 2014/34/EU wh...

One of the fundamental problems in coal mining industry is inefficient use of machinery and equipment. It is therefore necessary to take measures to improve the situation. An innovative system to test components of mining machinery control hydraulics presented in the article may support the initiative. This system enables reliable and efficient testing of components of the control hydraulics. This has an essential and practical significance, since hydraulic systems are commonly applied by many industries, in parti...

Modelling of fine particulate matter (PM2.5) requires new approaches for the evaluation of populationпїЅs 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 a...

An assessment of a market property value has been a subject of a debate among appraisers for many years. Some of them believe that the пїЅpowerпїЅ of statistics is so tremendous that in each situation an appraisal should be based on statistical methods. On the other hand, the other group off appraisers with a considerable experience, strongly support an actual expert assessment. For practitioners statistics is usually only an additional tool used rather to confirm a presented thesis. The dispute lasting for years ...

Since INSPIRE directive was published in 2007, many datasets became publicly available in interoperable way. This makes possible the developing of wide range of applications (including web and mobile) that use this information as data source. In this article authors test all for download available datasets registered in Latvian spatial metadata catalogue and describes the technical details such as the feature type, feature count in dataset, geometry type, default coordinate reference system, standard name and deri...

permanent concern of the researchers regarding the environment protection and the improvement of life quality in order to sustain the society development is orientated to viable solution for reducing the global warming. The main contributor to this negative phenomenon is represented by the carbon dioxide (CO2). This gas results in various processes, such as fossil fuels combustion or as a by-product from bio-hydrogen production. Also, the carbon dioxide is one of the main contaminants of natural gas and usually it...

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...