Browse

In this work, Electron Paramagnetic Resonance (EPR) as an innovative development route was introduced for the following of heavy crude oil oxidation. Moreover, Differential Scanning Calorimetry (DSC) confirmed results that gained by EPR techniques. Herein, we investigated two heavy crude oils based on temperature-dependence initiation process on the kinetics of LTO in the temperature range from room-temperature to 200пїЅC, in the presence of hydropeoxide as an initiator. Without hydroperoxide, the behavior of two ...

We have collected paleomagnetic samples from Late Devonian (Fammennian) basalts and sedimentary redbeds at the Bykovskaya Straight (in the vicinity of Lena River delta). Most studied samples carried interpretable paleomagnetic signal. Three paleomagnetic components have been isolated: A+AпїЅ, C, and D. The magnetization of the overwhelmed majority of Late Devonian samples from the Bykovskaya Straight has been reset by modern (or Late Cenozoic) geomagnetic field (component A+AпїЅ). The sole site was characterized b...

This article proposes a software tool, based on artificial intelligence technics, to grid operators and energy companies, to optimize the power system. Precisely, it uses pattern recognition capabilities of neural networks, in order to enable a higher share of renewable energy to consumers. The applied analysis on PV power and other related electrical grid data, such as smart energy meter readings, are based on pattern recognition technics. The neural networks used for this approach will identify days of the week ...

Among different methods of oil-crop biomass processing two main reactions are allocated пїЅ oil transesterification with methanol and fatty acid deoxygenation. Last decades there is a growing researcherпїЅs interest to the production of fatty alcohols with carbon number 10-18 by selective hydrogenation of carboxylic group of fatty acids. These alcohols can be used in various fields, e.g. pharmaceutical, cosmetic, fine organic synthesis as well as in biofuel industries. In this work, we propose to use polymeric cat...

The performance of investment projects and their impact on the beneficiaries represents a real challenge to the public and private entities, from the perspective of all resources involved and expected results, on all fields. The economic efficiency of investment projects, initially considered, by many others, as one of the main criterion in evaluating projects process, cannot be a real guarantee of performance projects. At present is a need completing the process analysis and with other characteristics such as the...

The studed area, a WNE-ESE cross-section Espinho-LobпїЅo, is located is the westhern boundary of Central Iberian Zone and Ossa Morena Zone, near the NW cost line of Portugal. This is an axial sector of the Iberian Variscan Orogen from which several geodynamic interpretations have been proposed. The aim of this work is a contribution to the petrogenese and variscan evolution of the (meta) igneous and metasedimentary units, constrain by macro, microstructural, petrographic and lithogeochemical data. The metasediment...

Plutonic rocks are quite widespread throughout Anatolia (Turkey) ranging from gabbro to granite and calc-alkaline to alkaline. One of those rocks are located in Kahramanmaras, SE of Anatolia, and named as the Buyukkizilcik intrusive rocks. This area is situated in one of continental blocks of Anatolia, Tauride Belt. The basement of the studied area is composed of Paleozoic-Mesozoic metamorphic rocks and they are cut by the intrusive rocks. In the field these rocks are quite altered. These intrusive rocks are alkal...

The deposit Kokkyia is located in the exocontact zone of granodiorite intrusion, and zones of hydrothermal alteration, which enclose gold mineralization, are controlled by small intrusions of diorite and syenite of the Upper Devonian intrusive complex and are located in volcanic rocks of sour alkali and medium composition. Practically all the difference of rocks are affected by the processes of hydrothermal changes and are shown as the processes of propylitic nature: albitization, feldspathization, chloritization,...

Pore space characterization is an essential element of reservoir characterization, often based on combination of different laboratory techniques. The study concerns mercury injection capillary pressure, low field nuclear magnetic resonance, gas permeability measurements and X-ray diffraction analysis on Miocene sandstones and mudstones. Core samples were taken from several boreholes from the Siedleczka area, which is located in an important gas province of Poland пїЅ the Miocene Carpathian Foredeep Basin (southeas...

The paper deals with plant growth-promoting rhizobacteria and their capacities to boost the efficiency of phytoremediation processes applied on soil polluted by the industry. For this purpose, we chose a locality in the form of decontamination site in Ostrava, where ruderal plants were sampled. Such plants are generally regarded as hyperaccumulating with high production of biomass plants. Their root systems were confirmed for the occurrence of PGPR-bacteria, predominantly of the Pseudomonas genus. The results of t...

The increased vulnerability of the aquatic landscapes of Subarctic of the European part of Russia to anthropogenic impact is a consequence of natural conditions and its geographical location. In this regard, the study of small rivers and their catchments which are remote from the direct influence of the industrial and residential zones is of particular interest to researchers, since they can be considered as background areas of the Subarctic. One of these rivers is Kyanda flowing into the Onega Bay of the White Se...

This paper presents a theoretical and practical approach of the evaluation concept of professional risk specific to activities of gas wells extraction and initial processing. The scientific research highlighted in this article was obtained during INSEMEX Project from The National Program for Research and Development PNCDI-CEEx. The main purpose of evaluating industrial risk is to prevent this type of risk and when there is no possibility to eliminate it, it is mandatory to reduce it up to the amount of residual ri...

The Svetloborsky dunite-clinopyroxenite massif of the Platinum belt of the Urals is almost entirely covered by eluvial-deluvial sediments, which makes it difficult to search for platinum metal mineralization in primary dunites. Lithogeochemical survey of soil-forming eluvial-deluvial sediments was conducted to identify and outline of the platinum anomalies. According to the results of lithogeochemical survey secondary dispersion haloes of palladium, gold, chromium, nickel, cobalt, manganese and other rare elements...

The article is devoted to the study of the polycentric city structure. The large area of the city combined with territorial-functional differentiation, growing interest of the population in recreation, leisure time, family rest, and the desire to attract tourists are all components of the emerging polycentricity of city life. Polycentricity of city structure assumes the formation of not one but several local centers on the basis of socio-ecological functions in combination with economic activities of a post-indust...

Climate change, environment pollution, environmental pressures force all entrepreneurs to implement actions arising from the laws and take additional management initiatives to protect the environment. Environment management system according to ISO 14001 can be a useful tool in this field. Environment management system is a part of the whole enterprise management system that includes organizational structure, planning, distribution of responsibilities and resources needed to develop, implement and lead management t...

Reservoir heterogeneity creates difficulties for every stage of production, the effects being more pronounced when little data is available. This is the case for many old and abandoned Romanian oil reservoirs that have very poor reservoir characterization. This paper discusses the efficiency of two prediction methods, ordinary kriging and artificial neural networks, for porosity as an routine core analysis parameter, with the hope of improving reservoir characterization by creating more accurate distribution maps....

Reliable estimation of hydrocarbon feedstock reserves is based on determining the reservoir's fluid recoverability, which is done by laboratory studying the microscopic structure of the core samples. Impulse nuclear magnetic resonance relaxometery (NMR) is one of the most perspective methods for studying petrophysical properties of rocks. We developed a portable NMR relaxometer, which can be used both in the laboratory and in the field while drilling. NMR analysis of the drill mud can be done directly on the well ...

Salinity of drilling waste is a serious problem, and it is one of the biggest problems at the stage of selecting drilling waste utilization method. The high salinity of drilling waste results from a few causes, i.e. the use of drilling fluids (inorganic salts are commonly used as drilling fluids components) in the process of drilling, drilling in saline formations and also brine inflowing to the well. The investigations carried out on drilling waste has shown that their soluble salts of alkali metals in the form o...

Russia has a significant bio-energy potential and a large fund of land resources, so there is no competition between the cultivation of bio-energetic crops with basic food ones, as in case of the EU countries. There is a steady trend of further growth of bio-energetic cropпїЅs agroclimatic potential under condition of European part of Russia through the expansion of the agricultural zone to the north and east due to global climate change and the pressing in the agricultural turnover temporarily unused and fallow l...

The paper aims to solve pollution problems mining sites closed on the environmental components. In this regard it is proposed the use of microcontrollers and wireless sensors for warning exceeded limit values of environmental quality indicators. It wants to create a network of wireless sensors to anticipate the amount of pollutants to take measures to reduce pollution in the mining Brad chosen as a case study.

The aim of this paper is to point out to conception of remediation approaches in the mining landscape after ending of mining. Remediation is technically and financially very demanding. According authors of some scientific studies comparing the results of the technical and biological reclamation with a spontaneous succession showed the advantages of spontaneous succession. Therefore the current trend in landscape ecology promotes procedures without technical remediation, which limits the progressive succession. On ...

This research consists of two studies regarding power generation projects. First based upon hard coal and second as joint optimisation of lignite open pit mine and lignite fired power station. Hard coal spreads as fossil fuels combustion competitiveness measure were calculated based on the typical parameters for the Polish hard coal and lignite power stations. Brown spread calculated for lignite power station generally indicates a higher value than the dark spread for hard coal combustion. Spreads value depend on ...

Brief Production of electrical power from renewable energy sources presents a chance to: satisfy the societyпїЅs power needs without encumbering the environment with combustion products of, among others, lignite and coal, energy security as well as become independent from traditional energy source suppliers. The aim of this article is to present the methodology used when designing wind farms utilising a group of wind turbines. The article presents the objectives of the European UnionпїЅs policy on renewable energy...

Liquefied Natural Gas (LNG) is stored in cryogenic tanks at receiving terminals. During the LNG storage some part of LNG evaporates into gas phase. Evaporated LNG is called Boil off Gas (BOG). Heat flow has an influence on evaporation process. It indicates continuous boil-off of small fraction of LNG due to heat flow from the ambient air through tank insulation. Vaporization process causes changes in the composition of stored LNG. Increased vaporization process may negatively affect the stability and safety of the...

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...

This paper reports the preparation of novel polymer membranes by phase inversion at room temperature (25 пїЅC), using acrylonitrile, acrylic acid, dimethyl sulfoxide and small amount of medicinal plant extract. We investigated the structure of the resulting membranes through Fourier Transform Infrared (FT-IR) spectroscopy and SEM microscopy. Also was determined the water content. FTIR-ATR spectra show that the peak at 1723 cm-1 shifted to lower wave number when medicinal plant extract (1715 cm-1) is added in the p...

When aiming to study pro-environmental behavior (PEB) developments at the local municipal level in Latvia, there were two complementary studies employed: 1- main local stakeholder groups interviewing in two town municipalities to study their existing PEB practice, especially obstacles and related municipal governance instruments; 2- questionnaire for about 100 Eco-schools (EcoS) coordinators in Latvia to study schools existing PEB practice within school grounds, but especially their orientation towards and collabo...

The article analyzes the necessity of forming a model of environmentally sustainable development. It is determined that the solution of this problem is extremely necessary for Russia. The characteristic of the basic concepts of solving global environmental problems is given. It is determined that the solution of this problem is extremely necessary for Russia. The characteristic of the basic concepts of solving global environmental problems is given. The need is formulated to consider nature as an economic category...

The competitive markets complemented by the concern for resources and environmental protection represent real and actual challenges factors for any organization. The customers call for special attention and organizations integrate the customer-centred approach in their strategies as main vehicle for achieving performance objectives. One of the well-known methods in this matter is referring to the Total Quality concept which supports checking and implementing different quality models needed to improve the competiti...

The main purpose of any socio-economic system is the quality of life of the population. Factor of production is dominant in the regional economy to achieve those goals. Creating conditions for the development of industrial production, is subject to state regulation, including all levels of government. However, responsible for the achievement of the final goal are also enterprises, organizations and citizens themselves. Production potential and quality of life of the population-are directly linked to the level of e...

Today, sustainable development is related not only to sustainable production issues but also to a sustainable consumption. In the planning document пїЅSustainable Development Strategy of Latvia until 2030пїЅ, special attention is focused on enhancement of ecologically certified and healthy products, thus shaping the image of Latvia as a пїЅgreenпїЅ country by promotion of sustainable eating habits and cultural heritage. To position Latvia as one of the пїЅgreenestпїЅ countries of the EU, the consumers, food produc...

Since 2014 Russia has been developing and implementing a new environmental policy based on the concept Integrated Pollution Prevention and Control and Best Available Techniques. Transition to Integrated Environmental Permits is gradual: first 300 industries characterized as пїЅkey pollutersпїЅ have to obtain permits in the period of 2019-2022. They will be followed by at least 5-6 thousand industries of nearly 30 economic sectors. Within the construction materials industry sector, several older cement plants are l...

With the growing number of cars in Russia over the last years, the number of gas stations has several times increased, and the range of oil products has greatly changed. At present gasoline should provide reliable and efficient engineпїЅs work; it mustnпїЅt change its composition and characteristics during long-term storage; mustnпїЅt damage reservoirs, fuel related components, industrial rubber articles; should have effective volatility and hydrocarbon composition; should provide non-detonating stable fuel combus...

The paper presents the analysis of the impact of quality and organizational parameters of products using industrial waste An attempt to analyze possibility of waste processing steel in order to improve the quality and properties of products. In today of globalization and standardizations processes, products as well as diagnostic systems, extremely a fact of abilities and adjustabilities seems material to the organization of enterprise for completion of diagnostic treatments. It isn't possibile here to omit the nee...

Border effect is a phenomenon that adversely affects the development of the regions. It involves the suppression of links between centers, which limits the development of the areas between these centers. Each type of boundary is generating variously powerful border effect, which can be quantified as the ratio between the expected and actual power of spatial interactions. Expected power of spatial interactions is calculated on the basis of geographic application of the gravity model, calibrated by using data on dai...

The research was aimed to study the pore water volume and chemical composition in the isolated core samples of the Bazhenov source rock formation taken from four different oil fields in West Siberia, Russian Federation. The approach is based on the complex laboratory methods of the investigation such as Dean-Stark and evaporation methods, the X-ray spectrometry, mass-spectrometric study (ICP-MS), water and Pfeffer's solution extracts. It was found that the samples contain three types of pore water: free groundwate...

Carbonaceous material (CM) from Outer Carpathians hydrothermal veins was investigated by Raman spectroscopy in order to reveal thermal conditions of its alteration. The studied CM as being found in association with пїЅmarmarosh diamondsпїЅ confirms that the crystallization environment of this mysterious quartz variety is connected with thermally-influenced organic matter. Obtained temperatures in the range of 159 to 205пїЅC are indicative for low to medium hydrothermal conditions. Presented temperatures stay in qu...

The Holy Cross Mountains is Paleozoic massif, 120 km long and 30 km wide is situated in the central part of Poland. It is built of Cambrian to Permian rock sequences and surrounded by Triassic to Cretaceous rocks. All over the massif Quaternary sediments form spotted cover. Paleozoic rocks are folded and dissected by transversal and longitudinal faults. The deposits, that occur between the siliciclastic Lower Devonian and Carbonate Middle Devonian sediments are interesting due to numerous ore mineralization sites....

The purpose of the study is to identify the features of additive technology and accordance with them to form a methodology for the economic evaluation of additive technologies application for the titanium production process.The fundamental difference between additive technologies and the traditional is that the improvement of the traditional technological methods aimed at more complete use of waste пїЅ that is, their recycling. The use of additive technologies allows you to move on a new level of rational use of n...

Research objective: To develop methodological technique for the assessment of change patterns of the effectiveness of oil recovery depending on the size of already exhausted sections and stress-strain performance of oil reservoir. The experience of oil development shows that configuration (size) of operating area as well as flow coefficient of oil reservoir are considered to be within the key factors determining the rate of oil recovery, regime and parameters of injection and pumping as well as the design of well ...

The seismicity of Romania is significantly affected by earthquakes produced by the Vrancea seismic source with intermediate depth events (3 shocks/century with magnitude Mw greater than 7.0). The seismic activity on the Romanian territory consists of both shallow and intermediate-depth earthquakes. The crustal seismicity is moderate and more scattered in comparison with the intermediate-depth one. The recent upgrade of the seismic network in Romania with high dynamic range accelerometers ( 114 real time seismic st...

The paper is devoted to the performance of a new combination between a classical closed center hydraulic feedback steering unit and an electrohydraulic servo system based on the modern generation of digital servo valves. This type of combination may represent a solution for autonomous agricultural machinery based on the high-level technologies. The research is generated by increasing world population requesting more supplies on one hand, and the obvious decreasing of rural inhabitants, augmented by the translation...

Models for resource and environmental management should be as specific as possible, but complex, regional environments are highly variable and not readily compared, as would be desired for decision support. This paper presents selected tools to improve the transparency and quantitative character of modelling procedures and databases are presented. These methods are largely related to existing procedures for regional relative risk ranking, but also include system structural analysis and risk classification. Several...

This paper presents a research which consists in measuring potential energy which be obtained on the surface of water in motion and showing the phenomenon of пїЅwavesпїЅ monitoring in the Black Sea basin. For this were measured, processed and analyzed the amplitude of the waves, the frequency and the waves direction, more than 12 Mm shore, isobath of 50 m, to the coastal zone. There are described techniques and measurement accuracy durring one year. Also, are presented monitoring and processing data with graphycal...

The Internet and computer networks development led to the development of data acquisition and monitoring systems, becoming nowadays a necessity. This paper proposes the development of applications to monitoring parameters, both local and remote; the parametersпїЅ values are derived from a micro-weather station. Two interfaces are implemented for monitoring parametersпїЅ values: the first one is a part of a wireless sensors network (named eKoView), and the second one is implemented in C# and running on a color oper...

This paper reports the efficiency of polymer membranes without and with small amount of commercial plant extract involved in removal of nickel ions from synthetically wastewater using a mini-electrodialysis cell. The membranes were obtained by phase inversion technique at room temperature. The structure of the resulting membranes was investigated through Fourier Transform Infrared (FTIR-ATR) spectroscopy and Environmental Scanning Electron (ESEM) microscopy. FTIR spectra show that the peak at 2325 cm?1 shifted to ...

Nowadays, there is an increasing interest in the tight oil reserves. Such kind of oil have the specific physicochemical properties under conditions of natural occurrence [1]. In this article we consider the solution of the problem of preparing geophysical data for modeling seismic inversion on the example of bitumen deposits. The reservoirs occur at a depth between 150 and 200 m. Thuswise, the accurate processing of geophysical data remains actual. The seismic inversion is usually understood as a group of algorith...

Sludge from sewage formats municipal byproducts are considered "undesirable" that focuses remove pollutants from wastewater and can be a danger to the environment.Lupeni dump was born by storing the waste material resulting from the preparation of coal.The material deposited on the two branches of the heap consists of sandstone rocks clay, marl, carbonaceous shales and sandstones.From the analysis it is observed that: the reaction is slightly alkaline soil (pH = 7.4); humus content: medium to good; containing coar...

Ensuring stability of economic development, an energy and ecological safety is connected with increase in energy efficiency and decrease in power consumption of economy. The main indicator of resource intensity is power consumption. power consumption characterizes amounts of an energy consumption and fuel on the basic and auxiliary engineering procedures of production of products, performance of works, rendering services based on the set technological system. The Russian economy is one of the most power-intensive ...

Even though land cover and use changes, climate changes and altered use of energy, known together as the пїЅglobal changesпїЅ have been studied intensively, their relationships are still under debate, especially with respect of assessing the anthropogenic contribution. The study relies on the hypothesis according to which poverty and lack of environmental awareness could lead to disastrous environmental impacts, with adverse economic consequences. Starting from an assessment of deforestations based on GREENPEACE d...