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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 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...

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...

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...

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...

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...

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...

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...

It is important to gain a better understanding regarding the effect of frequent drought stress on biochemical and physiological processes in plants as well as on the plant population and community in ecosystem. One method of early detection and monitoring of water stress is by measuring the diameter changes of the stem using dendrometers. They can be used to determine not only the annual thickness growth, but also the distribution of the growth and the rate of expansion and shrinkage of the wood and bark during th...

Extensive research, conducted by Kazakhstani specialists in Earth sciences, resulted in accumulation of a big amount of information. Hydrogeological data are scattered and unsystematized, and it makes their processing and analysis very difficult. Therefore, it is necessary to create a unified information base, containing profile hydrogeological information and data from the related areas of knowledge, which will help to solve scientific and production tasks efficiently. Informational and analytic systems are devel...

The article presents design and verification of a road embankment supported by reinforced retaining walls with a passive facing system, which was the most optimal and effective method to design a road embankment in a cramped space in a flyover intersection of highways. The cross section presented in the paper consists of three roads at different levels, when the road in the middle is placed about 8 m above the other ones. The design was done using the analytical computational model and the numerical modelling, bas...

The expense of restoring of excavators cutting bodies is increasing these days in the Most Basin area, primarily the replacement of tooth because of abrasion expense. The main reason is the complicated geological situation of overburden rocks, first of all the occurrence of sands and hard structures in the overburden cuts rocks in the deep horizons of open pit mines. The main target of this article is the brief description of realised research. It is design of the optimum methodology of bucket tooth cutting body h...

The article presents the possibilities of using post-mining facilities and areas for tourist and geo-education purposes, as well as the specificity and conditions of such ventures, from local initiatives to projects with international renown. Factors deciding about the success of investments using post-mining relics were analyzed, mainly in terms of conditions for the implementation of projects for protection and securing such remnants as well as economic and social results of the project in the long-term perspect...

Wild edible mushrooms are a valuable food with a high content of proteins, fibers, antioxidants, and they are characterized with its specific consistency, taste and flavor. Though, from an ecotoxicological point of view, they are a risk commodity because of their extremely high bioaccumulative capacity to increase the level of risk elements and contaminants from the environment. Environmental contamination of risk elements is currently one of the most serious problems in the world. Risk elements, because of its hi...

The article deals with setting of the degradation of fibre-cement panels containing polyvinyl-alcohol (PVA) fibres. The degradation is being studied with a help of a soaking ? drying test. It is a long-time test, which is one of the series of tests (hot water test, frost resistance test, shrinking of panels, UV test), by which the degradation of panels is determined. The motivation for carrying out this test lies in searching for a substitute of asbestos-cement panels that cannot be used due to carcinogenic asbest...

Application of rubber at higher temperatures requires sufficient heat resistance. The experimental research was carried out with the rubber intended for use at higher operating temperatures as gaskets for caps in mining. The intakes during the operation of the rubber gasket are accompanied with physical as well as chemical changes that lead to thermal degradation of the material. The mechanical properties (tensile strength, elongation, Shore hardness, and abrasion resistance) of the examined type of rubber were de...

The stress state of a rock mass close to the Vostochniy open-pit, Olimpiadinskoe gold deposit, was studied with relief methods in the end-face measurement variant. The studies were performed at three observation stations within one engineering-geological rock block and identified the gravitational-tectonic type of acting stress field. The maximum component of the principal stresses is subhorizontal and acts in the zone of influence of the open-pit excavation parallel to the open-pit contour. Reconstruction of the ...

Heavy metals as one of the group of contaminants have great ecological importance determined by their ecotoxicity and ability of accumulation. The aim of the study was the assessment of the contamination of agriculturally used soils by mobile forms of heavy metals in Madunice, this area is situated on the right side of river Vah in Slovak Republic. Our work deals with contamination of agricultural used soils by mobile forms of selected heavy metals (Pb, Cd, Zn and Cu). 20 sampling sites were chosen and the analyse...

In case of the strong earthquake offshore Japan, tsunami wave approaches the nearest coast in approximately 20 minutes. So, time required for evaluation of tsunami danger is the key parameter for any warning system. The authors propose to determine the parameters of initial sea surface displacement at tsunami source (initial data to simulate numerically wave propagation) by a part of the measured tsunami wave time series until the first maximum. This is a clear and easy to apply stop criterium. Determination of th...

The analysis of the solid torrential flow in the Homoriciu river basin was done between the period 1970-2018 depending on the climatic data and the location of the studied area . The study of the morphohydrodynamic phenomena evolution in the studied area was also based on the comparative analysis This research work focuses on the complex phenomena of drainage liquid and solid production, the flow rates of rising and spreading of rain formation in the studied basin. of the longitudinal and transversal profiles of t...