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The paper reports the results of petrological calculations of some generations of rock-forming (pyroxene, amphibole, biotite) minerals and accessory minerals (zircon and apatite) from the Mesozoic igneous rocks of the poorly studied Dzheltula alkaline massif. It is the largest magmatic structure of the Tyrkanda ore region, located in the eastern part of the Aldan-Stanovoy shield. Obtained results of identification of physical-chemical conditions of pyroxene, amphibole and biotite crystallization indicate the fact,...

Given their wide spectrum of utilizations, the interest for mapping new reserves and prospective areas of useful rocks becomes crucial. On the Romanian territory the natural occurrence of useful rocks is widely spread on the foreland zone, and on the Carpathian structures. These rocks have multiple uses in constructions and various other civil/industrial sectors. Besides being used as raw material in buildings, roads and a variety of miscellaneous engineering works, depending on their petrographic type, these usef...

Geomagnetic data used for the study of the large periodicities of the geomagnetic field are presented as a series of hourly averages covering two solar cycles. These data were downloaded from the ftp site of the World Data Center for Geomagnetism from Kyoto. These data were calculated annually based on final data both from analogue magnetograms and digital recordings. To study the diurnal variations, non-periodic variations (geomagnetic storms, phenomena SSC or SFE) were used as one-minute averages, recorded in Su...

Taking into account that nowadays the websites lacking at least one dynamic component or side is rare (ea. the contact form) the focus of the current paper is granted to the programming environments and the scripting languages used for producing and running dynamic websites. Among the most popular scripting languages the PHP outstands its competitors ASP.NET, Java, CFML or Python. Within this framework, with the aim of separating the content from the presentation of a website content selected aspects linked to the...

A modern feature of websites' creation aside from the PHP scripting language is the use of a database. It is acknowledged that PHP offers the possibility of an advantageous structure for the source code, yet its real capacity is highlighted when the programming language works together with a database. Among these databases one can enumerate MySQL, Oracle or PostgreSQL and the list can be easily extended. The PHP language has predefined functions and native connectivity with the above-mentioned databases. The curre...

Sustainable agriculture appears as a current challenge due to interdependence between the continuous increases of the standard of living correlated with a depletion of the renewable natural resources. Thus, raising the standard of living translates to increasing the population globally and to ensure food is needed access to more and more natural resources and implicitly the phenomenon of wasting part of these natural resources in the form of by-products or by-products. The study also wants to make known as well as...

The assessment of explosion-protected electrical equipment is based on the requirements of the ATEX 2014/34 / EU Directive and is made through tests and verifications carried out according to harmonized standards (of the EN 60079 series). For the type of protection flameproof enclosure, the EN 60079-0 (for general requirements) and the standard for the type of protection flameproof enclosure (EN 60079-1) are used. A breathing device is defined as a device which permits an exchange between the atmosphere within an ...

The coastal lakes of the Romanian Black Sea shore comprise significant ecosystems, characterized by marine, brackish and freshwater assemblages. Therefore, these lakes may be seen as biodiversity huge reservoirs and natural bio-filters. They offer natural resources linked to their high biological production and productivity. This paper is presenting the current research state in the field of quality assessment of the aquatic ecosystems, with special regards to the lakes occurring in the southern Romanian Black Sea...

Wastewater treatment plants produce large quantities of sludge. Sludge originates from different stages of treatment and typically contains elevated levels of heavy metals, a large number of organic compounds and potentially pathogenic organisms. Considering the recent increased environmental concern, the authorities and the water utilities are facing strong demands for the safe disposal of the sludge. A good management plan regarding water treatment residuals should take into consideration the following aspects: ...

In the context of global confrontations in which international energy markets are in a complex transition period, on several dimensions: technological, climate, geopolitical and economic, the energy sector is the biggest challenge and concern, not just at European level, but also globally with profound influences on the competitiveness of the economy, the quality of life and the environment. The current legislative framework in Romania on energy sources encompasses the transposition and implementation of European ...

Nowadays, various climate data sources offer free-access information regarding interpolated climatological data, used in forest research studies (dendroecology and dendroclimatology). The most utilised are the international data grids, for reasons of length of time series and offboard coverage. Changes in the climate extremes from the last decades are frequently monitored using global climate gridded datasets (we used CRU-TS and E-OBS). Our study evaluates their accuracy relative to the national data grid (ROCADA)...

Particulate matter are microscopic matter suspended in the atmosphere originating from natural and man-made sources, ranging from wildfires to a variety of industrial activities, including transportation. In our research we looked at the impact of particulate matter on the environment and on human health with the focus on contribution to production and spreading of particulate matter by aviation activities. In the first step current state of research was examined. Available data was summarized on the occurrence an...

The electro-dialysis of copper chloride we conducted for electroplating of copper from copper chloride solutions. The concentrations of copper chloride were varied for each test (0.95g/L, 1.51 g/L and 4.51g/L). While other factors were controlled (current for each test was 0.45 A, each test was ran for 10 hours, the feed flow rate and the temperature of the make-up feed was kept constant. It was ensured that the process took place in acidic conditions. The membrane used was a microfiltration synthesized from polyv...

Observations were made on the apple fruit tree orchards belonging to S.A. Loturi Service S.R.L. Delesti, Vaslui County, during the period 2017-2018 from May to August. For this, observations were made periodically on the field, and samples were also collected using soil traps type Barber, which were then analyzed in the laboratory. Barber traps were represented by 6 pots with a total volume of 600 ml, in which we used as a preservative liquid a salt solution with 4% concentration and these traps were placed at gro...

The activity of S.C. Agrobirkenbach SRL started in 2010, following the lease of an area of 183 ha. In the following years, arable land was added in the same area, both in the form of lease and purchase, reaching an area of 831.68 ha in 2015. Out of this area, 80 ha are owned by the company and the difference of 751.68 ha is held as a lease. The present paper aims to make a contribution through the use of modern technologies to the optimisation of area monitoring (lands cultivated with different crops). The agricul...

The article is devoted to the problems of managing master programs in the field of economics and management. The theoretical and empirical analysis made it possible to conclude that the existing masters programs in economics and management do not fully meet the modern requirements of the business environment, including geology, exploration and mining enterprises. The key factors that influence the gap between the competencies formed by graduates of programs and those demanded by the business environment are identi...

Diagnostics and control of the hydro-technical construction state are the most important actions at the system of safety keeping with exploiting high-pressure dams. Considered in the paper stress-strain control system is attributed to special one in exploiting period. That system is non-traditional for hydro-technical constructions. It is aimed at specifying model calculations of stress-strain state of constructions, defining peculiarities of its deformation and can be used to enlarge the monitoring system at plac...

The ecological aspect of an office building can be observed mainly in the microclimate of its rooms. In the recent years, there is a growing interest in sustainable construction, especially in terms of the amount of fuel needed to heat buildings. This predominantly concerns commercial office buildings in which the achievement of an adequate standard and inner climate of rooms is often the most important criterion for the customer renting the premises. The costs borne by potential tenants, the owners of the buildin...

The adverse effects of nutrient enrichment of surface waters, ?aquatic eutrophication?, have been identified as a major environmental issue at national and international levels. A range of statutory and international commitments, including EC Directives, the OSPAR Convention and the UK Biodiversity Action Plan, requires action to be taken to address the threats to the quality, ecology and uses of our waters. However, while these initiatives are helpful in controlling eutrophication, each addresses certain parts of...

The emergence and development of the automotive market for electric vehicles to the detriment of motor vehicles with internal combustion engines has generated a series of controversies regarding the environmental pollution. In response to the development of the electric vehicle and the increasingly restrictive pollution standards, manufacturers of classic cars have designed cars with increasingly lower emissions of toxic gases. The electric vehicle emerged from the need to minimize air pollution in major cities an...

Digitalization and industry 4.0 are considered as two of the most current trends in digital transformation of economy. The service-based model is mainly focused on increasing customer value (demand-pull), while Industry 4.0 is often seen in the context of value added to production process (technology-push). Although some scientists view them as complementary concepts, there are currently no characteristics of relationship between these two trends. Thus, it is necessary to develop a conceptual framework that combin...

One of the most abundant renewable resources with a great potential as raw materials for production of fuels and bulk chemicals are carbohydrates derived from biomass. Among these, esters levulinates have been widely used as solvents and plasticizers in food industry or as fuels additives for transportation. The direct synthesis of methyl levulinate from fructose over solid superacid SO42?/TiO2-La2O3 catalyst was investigated in this study. The influence of different reaction parameters such as reaction temperatur...

Atmospheric air is the primary component used in air separation plants. Wet air is a mixture of dry air particles and vaporous water particles, a mixture in which the components do not chemically interact and are thought to be approximately perfect gases. Atmospheric air to be processed in a separation unit needs to be cleaned of all impurities that can cause damages in the main components of the plant. The hazardous impurities that can be found in the atmospheric air used to generate oxygen, nitrogen and rare gas...

This paper presents a two-level stochastic scheduling tool. The proposed tool determines the optimal location and size of different schedules through a long-term scheduling as well as the optimal operation strategy for schedules through a short-term scheduling. The proposed scheduling tool considers distributed resources, physical and operational constraints, and blocks as candidates for the extraction. One of the key characteristics of the introduced scheduling is its ability to tackle the two schedules through s...

Metallurgy is currently faced with difficulties due to the depletion of easily processed mineral raw materials. Thus, the development of new technologies for processing of low-grade sulfide ores and substandard concentrates is an urgent task. Biohydrometallurgical methods based on the activity of acidophilic microorganisms can be used to extract metals from different sulfide concentrates including arsenic-containing. The treatment of these products using pyrometallurgical technologies poses a problem due to the lo...

Sulfide ore processing is characterized by significant losses of non-ferrous and precious metals into various wastes including flotation tailings, which is presently considered as promising source of different metals along with low grade ores. Old flotation tailings, which have been accumulated in significant quantities during the exploration of some mineral deposits, usually contain a wide range of minerals, including sulfides (pyrite, chalcopyrite, sphalerite), sulfates, hydroxides, hydroxysulfates, etc. Thus, s...

Core analysis is obligatory when developing mineral deposits or estimating reserves. Coring is always accompanied by taking photographs of the samples. Today, these photographs can also be used for additional research. For example, it is possible to extract information about the optical porosity from photogrammetric data, carry out an automated lithological classification or determine other physical and chemical characteristics of rocks within the sampling interval. Photogrammetric imaging result is a digitally un...

Increasing production scale and demand highlights the necessity of industrial waste water purification. Such water, except for harmful impurities that pollute environment ecologically, contain substances whose return into the production cycle makes the production process more economical. From this point of view, purification and concentration of water generated after the regeneration of cationites used in the process of water treatment, is more relevant. Lot of productions, such as energy, electronic, radio techno...

The Polish Cu-Ag deposits on the Fore-Sudetic Monocline are characterized by the occurrence of sedimentary structures called the elevations of the Weissligend top. These are elongated forms in the shape of sandy shafts whose occurrence affects the change in the value of deposit parameters (including reduction of the shale series's thickness). In the Lubin deposit, these elevations are the least well-known among all such structures in the entire Lubin-Glogow Copper District (LGCD). The basic material of the study w...

The aim of the present study was to determine the content of coumarin as a possible methanogenesis inhibitor in prepared model silages made of mixed cropping system (MC)crops composed of Zea mays L. and Melilotus albus MED. (white sweet clover).Global efforts to reduce dependence on non-renewable fossil fuels are intensified andbiomass production is becoming increasingly important. European Union (EU)intervention in the field of renewable energy has contributed to increasing the demand forbiomass intended for biog...

This study is devoted to the development of e-learning technologies for disabled students with violation of musculoskeletal system. These works are focused on creation an intellectual decision support system for inclusive education process, providing an individual approach and personalized e-learning for students with disabilities. Currently, there are several approaches and various techniques for creation education systems, and the investigation in artificial intelligence has been one of the most successful areas...

The application of the collection of tropical and subtropical plants of the Botanical garden of "Leningrad state University named after A. S. Pushkin" is considered in the process of training bachelors in different directions. The directions of using the collection of plants in the training courses of disciplines included in the plan of training bachelors on direction "Ecology and nature management" profile "Ecology"; "Pedagogical education" profile "Geography and biology"; "Landscape architecture" profile "Decora...

Over the last decades, river floods in the world are more common causing more and more human and economic damage. Understanding the Processes causing floods and developing simulation models to assess the threat floods are important issues. In this regard, the use of two-dimensional hydraulic models for flood simulation in areas with complex topography and infrastructure where additional information is needed to differentiate the flood threat is extremely convenient and gives more accurate and detailed results from...

The creation of in vitro model of human BBB, completely identical to the real BBB, was necessary for the possibility of studying the transport and penetration of drugs and xenobiotics and is still very popular and urgent task. In order to reproduce the most close to the real in vitro model of BBB, a microfluidic platform is used, which allows more carefully reproduce the structure of BBB, as well as physiological tangential stress on the surface of endothelial cells (0.3 - 2 PA). An innovative development was a ne...

GIS-technologies in hydrogeology facilitate transformation of methods of cartographic works. At the same time, it is necessary to provide methodological recommendations and guidelines for presentation of geographical features on the digital hydrogeological maps. The hydrogeological maps are constructed on the results of the hydrogeological research with due consideration of geological conditions of the region, aquifers and aquifer systems, aquicludes, linear structural elements and other data. This article is abou...

In the paperwork is exposed a practical way for establishing critical points position in a pressurized enclosure by using the computational fluid dynamics (CFD) simulation. It is known that for complex inner structures of pressurized enclosures it's very difficult to precisely establish the position of critical points. Those critical points are points where the concentration of the test gas will reach at the latest to the desired value of concentration in the process of testing. In the first part of the paper were...

The work is considering of technology of Crude distillation unit in general modern technology of refining process. Crude distillation unit (CDU) is at the front-end of the oil refinery. Oil topping column K-1 is especially important in the general crude distillation unit technology in Russia. The main purpose of K-1 column is separation of light gasoline and the main part of the dissolved gases from crude oil in order to normalize the amount of gasoline hydrocarbons following to the main column K-2 and to stabiliz...

It was experimentally shown that using liquid nitrogen and a radioactive source, radon can be concentrated to high levels. A simple device has been proposed, that allows pre-concentration of radon at liquid nitrogen temperature. The essence of the device is based on the transformation of gaseous radon into a liquid. It is known that liquid nitrogen has a boiling point (-195,75) ??, and gaseous radon turns into liquid at (-62) ??, and at (-70) ?? turns into a solid state. Thus, the low temperature of liquid nitroge...

In paper describes the geological structure and mineral associations of the Ural emerald mines (Middle Urals, Russia) as the main source of high-quality chrysoberyl and its rare variety, alexandrite. The purpose of work is to identify the crystal chemical characteristics and nature of the color of natural chrysoberyl and alexandrite, as well as to study the comparative crystal chemical characteristics with their synthetic analogs. Samples for research were chrysoberyl and alexandrite from mica carrying rocks and p...

This paper presents geology aspects of jeweler demantoid new manifestation, which was recently discovered in the Polar Urals. The mineralogical characteristics of the manifestation are described, demantoids chemical analysis results are shown, and comparative analysis of demantoids with samples from classical Ural deposits is given. The crystal chemical characteristics of demantoids from this manifestation are studied and color origin of these garnets is investigated. Demantoid mineralization is presented in two t...

This paper examines changing environment of natural gas market with focus on Europe. It discusses the supply demand balance suggesting that developments in recent years will likely lead to higher natural gas prices and the need for new infrastructure in order to provide energy security at affordable prices. Last decade has seen significant fluctuations in prices of natural gas globally. In middle of 2018 market signal indicates that prices have bottomed out in the first half of 2016 and now they are on upward traj...

The article is devoted to the issues of industry environmental self-control legal nature which is traditionally considered one of the forms of environmental control by the Ukrainian environmental law doctrine. The urgency of improving the efficiency of law in this area is due to the authors` contention, according to which environmental control is one of the most promising guarantees for ensuring environmental safety of the environment and human beings by preventing and minimizing the negative impact of environment...

This scheme is based on the idea that the stratigraphic limits of this time interval (251 ma) correspond to the temporal positions of a large number of distinct dynamic moments (change of meaning of the radial motions) linked with two cycles: Valach climatic cycle (VhCCy ? 4.1 ma, pulsations of the Solar System) and Raup-Sepkoski cycle (RSCy ? 26.78 ma, pulsations of our galaxy). Many of these moments, often perceived as tectonic phases or as important extinctions, led various global changes which allowed the sepa...

As a part of the Czech Historical Atlas project, the Institute of History of the Academy of Sciences of the Czech Republic and the Faculty of Civil Engineering of the Czech Technical University in Prague prepare a printed atlas devoted to the history of the former Czechoslovakia in the 20th century. The atlas is now in the process of creating and reviewing individual maps. This paper deals with the thematic division of the atlas, the use of individual cartographic methods and important notes on the creation of his...

ABSTRACT The specialized software packages dedicated to mine planning and design activity developed greatly in the past years. In order to take advantage of this software evolution, the available geospatial data, the information about the geology of the deposits, the surface morphology and the open pit models which are accessible in classic format, on printed paper, all the information must be converted in digital format for fitting in dedicated digital databases. The paper presents the steps taken in this digitiz...

Presently, most electronic navigation charts (ENC) are vector format maps based on the S-57 data model. This model uses the descriptive and spatial characteristics of bodies of water to create hydrographic information which can be used to solve such problems as: marine traffic monitoring, vessel route planning, maritime dangerous situation detection, etc. This paper presents an approach to maritime safety monitoring on the basis of intelligent GIS technology. GIS-oriented systems are often used for maritime safety...

Since the 1980s, intensive anthropogenic disturbances have affected the channel of the St. George branch that is the southern distributary of the Danube River. The meander cutoff programme since 1984?1992 induced different hydro-morpho-sedimentary impacts on the local distribution of river flow velocities, discharge, and sediment fluxes between the former meanders and the man-made canals [1]. These cut-offs lead to a shortening of the distributary by about 31 km and, consequently, increased the free water surface ...

We present developed model for decision support in environmental economics within geo-information management paradigm. We consider socio-economic geographically distributed natural-technical systems and use to manage them the basic principles of environmental economics and geo-information management in accordance with a complex approach that involve the integration of efforts of all sectors: society, government and business. We used Foresight technologies, theory of decision making under uncertainties, geoinformat...

Oak stands decline has been several times reported in the scientific literature, starting with the beginning of the twenty century. A brief overview is presented regarding the occurrence of oak decline in the Romanian extra-Carpathian region since 1900 until present. Six oak species having a significant economic and ecological status are affected - Quercus robur L., Quercus petraea (Matt.) Liebl.), Quercus pedunculiflora K. Koch., Quercus frainetto Ten., Quercus cerris L., and Quercus pubescens Willd. The literatu...

The dehumification of soils in the North Kazakhstan region is one of the most pressing problems due to the inadequate control of the cultivation technology of agricultural crops with the intensive occurrence of soil erosion. This paper considers the processes of dehumification of humus by the main types of soils in the North Kazakhstan region. The results of the research have demonstrated that humus in soil types has been decreased in 30 years from 1.78% to 30.2% since 1978 to 2018. The content of humus in 9 types...