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The atmospheric composition research was based on extensive computer simulations carried out with good resolution using up-to-date modelling tools and detailed and reliable input data. Extensive numerical simulations of the atmospheric composition fields in Bulgaria have been performed using the US EPA Model-3 system used as a modelling tool for 3D simulations. The extensive data base that was created from the simulations was used for different studies of the atmospheric composition. The air pollution pattern is f...

Klebsiella pneumoniae and Acinetobacter spp. strains are opportunistic pathogens frequently involved in the etiology of nosocomial infections in immunocompromised patients. A major factor amplifying the risk of these infections is prolonged period of hospitalised patients, especially in intensive care units. Statistically, the strains belonging to the Enterobacteriaceae family and those of the Acinetobacter spp. are ranked the first and respectively, the second among Gram negative bacilli, whose incidence has incr...

This study investigates content of radioactive gas radon ? Rn-222 in a number of sources of surface waters of different type (spring, artesian, well, river etc.), located in the territory of Kartli artesian basin, Georgia. Water samples were selected from 23 sources. Researches were carried out in the period January-December; samples from several locations were selected monthly. Electronic radon detector RAD7 was used for radon content determination. It was established, that radon content ranged depending on the s...

Hydrogen is one of the alternative source of energy. Its lack of negative impact on environment, high heating value and heat of combustion make that it can be apply in industrial range. However, this is connected with storing this fuel. Huge amount of this medium can be storage in following ways: depleted gas fields, aquifer formations or leached salt caverns [1]. The hydrogen is a very problematic gas because of its physical and chemical nature. It has the smallest atomic radius in whole periodic table. It can at...

Geological storage of CO2 provides a way of reducing CO2 emissions into the atmosphere, by capturing CO2 from major industrial CO2 sources, transporting and injecting it into suitable deep brine aquifer rock formations. The selection of the potential site for the CO2 storage is based on the analyses of all the available geological and geophysical data (well data, seismic lines, gravimetric and magnetic maps, outcrops, geological cross sections, pressure and geothermal regimes, mechanical rock proprieties, chemical...

In the current forest typology?s scheme of Latvia the descriptions of vegetation are based on corresponding forest type?s ground vegetation in maturity stand. However, in practical forest management it is important to know forest ground vegetation?s development through all foresty cycle and valuate phytocoenoses state in every stand?s age and development?s stage. There are significant changes in ground vegetation?s taxonomic structure, projective covering and vertical structure in all forest types from clearing ti...

The paper deals with the possibilities of metal recovery from sediment from sludge disposal site after mining activity from locality Zlate hory. The locality is protected from mineralized water, which represents a potential threat for groundwater. This work deals with the use of bacteria Acidithiobacillus ferrooxidans to bioleach polymetallic ores (Cu, Zn, and Fe) from these locality. It is a simple and effective method to recover metals from mineral raw materials, where conventional methods cannot be applied. As ...

Architectural styles had a cyclic pattern throughout the history of humanity, however their recurrence was intentional, educated, having more to do with the taste of a society or a group of individuals than with their basic needs. Vernacular architecture emerged as a response to the needs of people and was a collective product, not the masterpiece of an architect. It emerged from the local building techniques and construction material availability, as well as climatic, economic and socio-politic conditions. Underg...

The cementing of wellbores is of the utmost importance at each stage of the drilling jobs. Regardless the conditions in the well, the aim of the cementing job is to efficiently seal the annular space between the casing and the wellbore wall, and to liquidate absorptive zones and also the flow of fluids in the annulus. The properly performed cementing job guarantees successful and safe exploitation of the well. A correctly performed cementing job in a borehole depends on the design of the borehole, geologic-reservo...

The data on the geological position, the features of the mineral and material granitoids composition of the Borschovochny massif, which is localized in the northeastern part of the Eastern Transbaikalia, are given. According to geotectonic zoning, granitoids of the massif are collision formations that arose as a result of the collision of the Siberian craton and the Argun microcontinent in the Late Jurassic time. The granites of the Borschovochny massif correspond to rocks of normal alkalinity with potassium (and ...

The aim of this study was to analyze the effect of calcium ions from lactate salt at four levels of 0, 100, 150 and 200 mg/100g addition in wheat flour of a high extraction rate on fundamental dough rheological properties and bread quality. Wheat flour used in this study was of a strong one for bread making having 14.3% moisture content, 1.25% ash content, 14.3% protein content, 1.92% fat content, 35% wet gluten content and 3 mm gluten deformation index. Dough fundamental rheological properties were analyzed using...

In the last time developments in technological field have happened in a pretty rapid tempo, humanity having actually over the years the conviction that these developments will have only positive desired effects. Without any doubt this progress has assured in the past the increase of humanity quality of life by using technologies for different specific human activities. Anyway 1972 after publishing the first report to the Club of Rome ?The Limits to Growth? it was finally understood that besides wanted effects of t...

Major infrastructure projects are nowadays benefiting on the remarkable IT structures which allows to use large datasets of the geotechnical parameters of interest and therefore to test different technical solutions, adapted to the site geology and local tectonic setting. Therefore is of major interest to have an improved knowledge upon the hazardous geological features, to evaluate them and to select among the possible technical solutions the most advantageous (in term of stability, strength and costs). In this s...

Typomorphic features of placer gold from alluvial deposits of the Bolshaya Kuonamka river basin, draining Eastern framing of the Anabar massif are studied in order to identify association types of primary sources and places, promising for their discovery. Based on identified indicators of gold, it is defined that, ore manifestations of low-sulfide gold-quartz association are the main primary sources of gold-bearing placers. Identification of palladium gold in association with platinoids, as well as its intergrowth...

The main idea of this paper is to develop a multi-agent system, integrating advanced control algorithms and acting scenarios, for optimizing energy management in an intelligent microgrid. In order to achieve this objective, it is proposed a flexible intelligent tool based on multi-agents, able to give alternatives for action to prosumers, through a specialized interface. In this respect, firstly are presented aspects related to the multi- agents (MAS) integration in smart grids? control. In the second part the wor...

The purpose of the research paper was to manage the dry fractioning operation and find out a new solution for it?s effectiveness. Therefore, based on previous studies of the authors related to dry fractioning in centrifugal field on complex lipid mixture, the correlation between the operating parameters (time ? temperature ? centrifugal speed) and physic ? chemical parameters can be done through the principal component analysis (PCA). Starting from these considerations and from the fact that the pork lard is a com...

Molluscs are invertebrates that form one of the largest groups in the animal kingdom, with more than 100,000 known species. A wide range of molluscs including families of Pulmonata, Gastropoda, Planorbidae and Lymnaeidae are intermediate hosts of trematodes. The snail Lymnaea stagnalis belongs to the family Lymnaeidae under the order Basommatophora-class Pulmonata is known to be an intermediate host of several parasites such as Chaetogaster limnaei which belongs to the annelid family, Naididae, an ecologically div...

Localisation and navigation are essential tasks for a mobile robot. If a mobile robot knows where it is, then it can make a plan to reach its destination. Localisation and navigation processes are not isolated from each other, they are closely linked. In fact, the ability for a mobile robot to localise itself is a basic requirement for reliable long- range autonomous navigation. Using sensory information about its environment, the mobile robot can perform actions dependent on this sensory information and navigate ...

The purpose of this study is thermodynamic simulation modelling of physicochemical conditions of the high-grade gold ore formation in the hydrothermally altered host rocks at different levels of erosion. In modelling, equilibrium mineral assemblages in the ores were obtained by minimizing the Gibbs free energy of chemical processes. The thermodynamic modelling of gold deposition was based on mineralogical-petrographic volumetric mapping and quantitative phase analysis of the ore and host rock samples. The high-gra...

The erosion of the soil, through the changes it brought to the soil cover and by the direct and indirect damage it produced, amplified and diversified the research in the field. In the soil erosion study, a particular importance is given to the slopes, showing, apart from their inclination, the exhibition, the uniform or varied appearance, the degree of fragmentation, the degree of erosion. The slope is expressed in percents and it is determinate the length of this slope (declivity), because these characteristics ...

This article is devoted to transport problem, which is one of the main problem of any logging company activity. On fifth all the world?s volume of woods belongs to the Russian Federation. Due to the fact that cutting fund is distributed an unevenly and a part of it is in hard-to-rich places it is use is not effective enough. Approximately 40-70 cubic meter of potential raw material per hectare remains at cutting area. Cutting waste and felling residues great removal is considered to lead to transport costs in Russ...

This article presents the influence of beta-amilase on 3 types of flour: white, whole and brown flour used in the baking industry. In order to determine the activity of the enzyme, the following analysis were done: the falling number using Perten Instruments FN 1310 and the rheological parameters of the dough using the alveographic method. The falling index indirectly measures the activity of enzymes, rapidly jellifying the aqueous suspension of flour which is introduced in a boiling water bath and it measures the...

The research was made in the hilly area of Southwest Romania, on the territory of Caras Severin County. The researched area has a moderate continental temperate climate. According to Koppen, the climate is classified as c.f.b.x. The annual average temperature is 10.8°C and the annual average precipitation is 631 mm. The soil type on which the research was made is typical gleisoil with a pH value in water of 6.02 and a humus content of 2.56% [5]. The dolomite used in the research was chemically analyzed in Austria,...

In Poland, like in many other countries, research is conducted toward creating sorbent materials based on fly ashes. The present shows the synthesis of fly ash from brown coal combustion in pulverised-fuel boilers of the Be?chat?w Power Plant. The synthesis was conducted in an autoclave using the hydrothermal method with alkaline activation. The conditions for the synthesis were: temperature of 170°C, NaOH aqueous solution. The chemical composition of the fly ash as well as the products of the synthesis was determ...

References to theoretical research of aerostatic bearings and the method of their analysis for choosing options of aerostatic direction are provided. The calculation is done by means of a numerical method based on the field pressure approximation in a gap by means of differential algebraic equations, which takes into account two-dimensionality of the lubrication flow in bearings of various configuration and gives results close to actual ones. With the assumptions made in order to simplify calculations, flow line d...

The paper examines the results of field observations carried out on the Galician coasts of Spain hardly polluted in 2002 by fuel oil spilled from the sunken ?Prestige? tanker in order to determine the rates of the pollutant natural destruction and to consider their relationship with principal environmental factors. It is a part of a large-scale research being performed on geographically different oiled seacoasts in France, Spain and Russia. In Galicia, the observations were undertaken in October 2012, November 201...

At the time of commencement of the documentation and investigation activity on the problem of critical statuses of the Zlatna mine, the subject, respectively the studied area presented an accelerated dynamic as regards the degradation of the environmental components. Information gathered from the technical and environmental documentation prepared in previous years and a site visit revealed an extremely precarious state of the Zlatna mine, in terms of safety. Against the background of the phenomenon, with broad soc...

Managing knowledge is the most important part of every enhanced process. Well-adjusted knowledge management leads to effective way of sharing knowledge, its comprehension, visualization and managing other processes connected to it. New trend in the field of Civil Engineering and Building Design is BIM ? Building Information Modeling. Management of Building Information Modeling is very current topic linked with the creation of building modeling and knowledge sharing processes used by the Architecture, Engineering a...

The article describes the results of the integration of the geochemical and seismic data on one of the oilfields of Tatarstan Republic in Russian Federation. The complex geological structure of the oil bearing formations of Carboniferous age results in misinterpretation of the geophysical data and drilling of the dry wells. Some potential structural oil traps find from the seismic data interpretation are water bearing. To avoid nonproductive drilling authors studied seismic faults and their connection with the geo...

One of the directions of the rational use of the secondary raw materials of meat industry, including collagen-containing, is its modification in order to obtain protein products enriched with micronutrients for the further use in food production. The presence of active carboxyl end groups in the collagen molecule and complex spatial structure cause the complexation of this protein with various minor nutrients, thereby promoting the creation of a biologically active composite for the enrichment of meat products. Th...

The target of this article is the presentation of the first steps of solving the project No. TH03020368 from the programme EPSILON titled ?The optimisation of the shape and material of ground and mining machines research?. The main topic of this article is the optimization of the tooth shape and primarily the optimization of the materials used for manufacturing of cutting bodies of the ground and mining machines. This research is necessary for increasing of efficiency of mining process in conditions of the Most Ba...

A technical progress in various fields of the national economy is accompanied by escalating aggression of the environment that complicates the protection of different objects made from steel, which is the main modern constructional material. Because of the corrosion attack, 50 million tons of metal is oxidized and lost almost forever every year for a mankind. In industrialized countries, annually average losses from corrosion equal to 3 - 5% from the gross domestic product. The damage from corrosion comprises not ...

The main air pollutants in the urban areas are power stations and transport. As a result of fuel combustion, heavy metals and solid particles with unknown composition enter the atmosphere. Concentrations of heavy metals in the snow can be an indicator of air pollution in urban areas, also giving us indications on the origin of pollution. Heavy metals accumulated in the snow in significant quantities in the cold period. But in the spring, runoff after the melting of snow presents a significant source of pollution i...

The analysis of bottom sediment quality is an important yet sensitive issue. The anthropological influences (i.e., urban, industrial and agricultural activities) as well as the natural processes (i.e., changes in precipitation amounts, erosion and weathering of crustal materials) degrade surface water quality and impair its use for drinking, industrial, agricultural, recreational and other purposes. Due to spatial and temporal variations in water chemistry, a monitoring program that provides a representative and r...

The paper deals with geotechnical design and assessment of pile foundations of the steel arch bridge structure, which was built on the motorway D1 in the Jablonov ? Studenec locality in Slovakia. Bridge structure is founded in a very difficult foundation conditions created by flysch rock environment. The bridge structure is statically difficult. Therefore, it was necessary to proceed in accordance with the rules applicable to the 3rd Geotechnical category when designing and assessing the bridge structure. The resu...

The imitator of self-contained self-rescuer is a component of training complex for personnel of coal mines and represents an effective application for development of skills of work with self-rescuers in regular and emergency situations. The task of design of mobile multi-usable self-rescuer imitator with chemically bound oxygen supply in the absence of regenerative chemical agent was formulated. The features of imitator are its mobility (wireless design) and the ability to create and transmit in real time via Wi-F...

The industrial objectives in which petroleum products are extracted (oil drillings, separating parks, compressor stations, deposits, transport pipelines) are sources of pollution for the soil and groundwater in the area. The specific pollutants in drilling, exploitation and separation of oil and gas for soil, subsoil and aquifer are: petroleum, pond water, detritus and drilling mud. [1] Starting from the fact that the activity in the area of ?icleni - Romania is an activity of exploiting petroleum products, which ...

The Cu-Ag deposit exploited in the Lubin-G?og?w Copper district (LGCD) in Poland is located in the Permian Rotliegend (sandstones) and Zechstein (shale and carbonate rocks) formations. The three main lithological series are not internally homogenous; within them, a total of 16 individual lithological units can be determined. The differentiation between lithological, mineralogical and geometallurgical ore properties is a criterion used to distinguish between main and individual lithologies in the deposit area. A sy...

We propose a theme analysis method that takes into consideration the perspectives of both a supplier (place) and a consumer (user) in unstructured place reviews written by users. To this end, ambiance on the place side and companion and time on the user side were considered as the theme elements. For the experiment, we used the review text data written in English provided by Yelp, and we selected coffee-related places (e.g., coffee shop, coffee house, etc.) from various place categories. From among them, we chose ...

Use of fish meals or oils in the poultry diets has made it possible to increase the level of long chain n-3 fatty acids in meat. When meat is enriched with polyunsaturated fatty acids (PUFA), all vegatble fat sources are less effective than marine fats. This effect results due to the content of n-3 fatty acids (FA) because marine fats or oils are composed of eicosapentanoic acid (EPA) and dosahexaenoic acid in generally a higher proportion whereas vegatable oils contain linolenic acid (LNA) whose conversion to lon...

Up until the invention of electronic distance measuring devices, in geodetic networks observations were made on the tracks (directions) between points, while the distance was measured only between the points representing the base (or the bases - in the case of the constrained networks). Even after the development of these tools, for a good period of time, we continued with observations on the directions given the size of the instruments and the cumbersome methods of making observations to determine the distances. ...

This paper presents several issues regarding the dynamic behaviour of the pedestrian footbridges structure under the action of general loads generated by the pedestrians? displacement, together with the correlated traffic comfort of the pedestrians crossing the structure. The footbridge crossing comfort criterion requires the inclusion of vibration frequencies and accelerations of the structures in certain limits so that the vibration amplification or resonance is avoided. The paper puts under investigation six fo...

In our article, we have focused on measuring the magnitude of adverse impacts caused by blasting in tunnels on surrounding areas. Disconnection of the rock massive during tunnel construction takes place due to the release of energy from the blast, which changes to the energy of the seismic waves and causes deformation of the rock massive integrity. Blasting works generate noise and seismic waves with changing maximum oscillation velocities and a wide spectrum of frequencies. The intensity of vibrations of the seis...

The production of a titanium sponge obtained by the reduction of titanium tetrachloride by magnesium is accompanied by the formation of a huge amount of chloride waste. They are annually stored in landfills - storages, polluting the environment. Consequently, one of the topical problems of titanomagnesium production is the processing of chloride waste. In Kazakhstan, there are a variety of sources of chloromagnesium raw materials for the electrolytic production of magnesium, but they are not used in the magnesium ...

The article examines the impact of climate on wool productivity formation in Askanian fine fleece sheep of the Tavrian type in the south of Ukraine. Choosing the parameters for assessing the relationship between living organisms and the environment is a topical issue. The paper systematizes the data on wool clips depending on air temperature and amount of precipitation on the territory of the Kherson region in 1990-2016. The research conducted established a dependence of sheep productivity on economic and climatic...

The use of a trenchless method of laying underground utilities is an advantageous alternative to the use of open methods. The method of vibro-impact immersion in the ground of steel pipes with an open front end is widely used in the construction of closed underground passages. Determining the trajectory of a clogged pipe is one of the most important operations in this technology. The article describes result of laboratory tests of prototype model of strapdown inertial navigation system designed in N.A. Chinakal In...

This paper describes application of the seismic facies analysis method to identify prospective deposits in the carbonate sediments of the Republic of Tatarstan The Republic of Tatarstan is one of the main oil producing regions of Russia, which is one of the main global oil producers. Annually it produces about 26 million tons of oil. The main oil reserves were discovered in 1950-1980. To keep production on the high-level geoscientists apply new technologies, such as seismic facies analysis. Tatarstan succession co...

Quality of food and beverages is an important aspect that can heavily influence the purchasing behavior of consumers. Wine quality broadly encompasses both extrinsic and intrinsic factors and how these factors are interpreted depends on the level of expertise Wine producers constantly brag about the quality ratings that their wines receive from critics, because a high wine rating ? implying high quality ? translates into increased sales for a wine. But quality wines come in all colors, degrees of sweetness and dry...

Ecological and resort area of Caucasian Mineral Waters occupies a special place among the resort regions of Russia due to the richness, diversity, quantity and value of mineral waters, landscape and climatic conditions, therapeutic muds. The pace of development of mineral water resources for the resort and industrial bottling has recently increased. The increase in the number of enterprises for bottling mineral water and organizations of sanatorium-resort type has a significant impact on the growth of water intake...

This study aimed to establish if the dried shredded leaves of Acer platanoides could represent an adequate food for earthworm Eisenia fetida (Savigny 1826) (red wiggler worm). The study was carried out in laboratory conditions and its aims were to determine the influence of this food on three biological parameters of earthworm Eisenia fetida (survival, weight, and prolificacy), and to reveal the changes appearing into the soil in the presence of this earthworm species, fed or not with shredded leaves of Acer plata...