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The biosynthesis of noble metal nanoparticles using microorganisms (?green synthesis of nanoparticles?) has recently become widespread for medical applications. The characteristics of the resulting nanoparticles depend on the microorganisms used and the process conditions. Screening of a number of methylotrophic bacterial communities of a practical biotechnological value was carried out to determine those ones, which were able to synthesize silver and palladium nanoparticles at high rate and efficiency. In several...

In the article the authors propose to use inductive metric data mining methods to assess the environmental and economic risks of businesses in various fields of activity and industry. The purpose of this methodology is to conduct operational monitoring of both environmental and economic condition of enterprises to regularly monitor the dynamics of internal and external factors when planning strategic decisions. A distinctive feature of the proposed approach is the integration of environmental and economic indicato...

The paper emphasize the correlation among the metals content in different samples of some individual macrophyte algae species with different contribution, as part of residual algae biomass along Romanian Black Sea Coast, that could be used as a potential new biostimulator-regenerator recommended for improving the quality of the vineyard soils from Dobrudja region, Romania. Concentrations and sources of copper, zinc, iron, chromium, manganese, cadmium, lead and aluminium were analyzed. For the metals content determ...

Microbial processes are of crucial importance for life on Earth. Microorganisms are capable of unique transformations on a global scale that all contribute to the harmonious functioning of the biosphere. Some microbial processes and their final products can influence atmospheric composition and climatic conditions on a planetary scale. Climate change, easy to see in recent decades, can alter the functioning of microbial communities and trigger positive or negative feedbacks. Microbial activities, such as organic m...

Bacteria, molds and even algae are commonly found in the environment. Under certain conditions, bacteria, yeasts, molds, algae grow on the facades of prefabricated panel apartment buildings. The article deals with the comparison of two different locations in Ostrava with respect to the occurrence of microbial attacks on the facades of residential prefabricated panel buildings. The first of the locations is adjacent to a high-frequency automobile traffic route and also close to the industrial zone in the lower Vitk...

Due to pressures to conserve energy, many buildings have in recent times been retrofitted with additional insulation. This has resulted in the appearance of microorganisms on the surfaces of building facades more frequently than before. This does not mean, however, that these microorganisms are not also found on uninsulated buildings. In earlier years, the facades of the apartment buildings were not aesthetically distinctive, often using colors such as gray, beige, and the like. Microorganisms may not have been as...

Climatic features and biogeochemical specificity of Russia?s north have a great impact on public health. It is believed that the cumulative effect of these factors is not fully compensated by social or other methods of protection. To identify the features of age-related changes in mineral metabolism in the inhabitants of Russia?s north, we studied concentrations of 25 chemical elements (Al, As, B, Ca, Cd, Co, Cr, Cu, Fe, Hg, I, K, Li, Mg, Mn, Na , Ni, P, Pb, Se, Si, Sn, Sr, V, Zn) in the hair samples taken from th...

The possibility of using invertebrate animals as bioindicators of soil conditions has been shown, because microarthropods react strongly to environmental changes. The isotopic composition of heavy metals and their anthropogenic origin are analyzed. It was established that the highest content of heavy metals is in the soil in roadside green zones and the lowest-at a distance from sources of pollution. The assessment of soil invertebrate species with the influence of various levels of soil pollution has completed. T...

Micro and nanoparticles of titanium dioxide are nowadays produced worldwide for a range of applications. In our project we focus on potential use of titanium dioxide particles as UV absorber (anti-UV protective coating) for wooden construction structures. We investigate the influence of different synthesis methods on particles? morphology. Hence, material characterization has an important place in our research. Electron microscopy is a powerful tool to obtain information about the morphology of particles and their...

Soil science literature divided the soil biodiversity into ?three broad functional groups called chemical engineers, biological regulators and ecosystem engineers.? The paper pointed out (by the aim of the microscopic tools) the main ecosystem services provided by the biodiversity of (micro) organisms living into the soil at the organic-inorganic interface, where they built a favorable environment for themselves, the crop roots, and the entire ecosystem. The studied sites are located into different pedolandscapes ...

Inhalation delivery is a promising route of drug administration, including systemic action. It should be considered that the particles of drug aerosol should have a diameter in the range of 1 to 3 ?m. Microspherical particles based on protein molecules can provide increased bioavailability of drugs with poor water solubility. In the present work, microspherical particles of sodium caseinate with a model hydrophobic drug ? phenacetin were obtained using spray drying method. Average aerodynamic diameter of resulting...

This article describes the design of a crossover whose dimensions are miniaturized using compact elements. Crossover is a directional coupler that allows you to transmit the incoming power to the input diagonally to one output, the rest can be considered untied. Compact units are designed in such a way as to achieve identical characteristics with replaceable lines. The number of connected loops in the crossover design will affect the dimensions and bandwidth of the device. With the help of mathematical modeling, t...

Over the last years the appliance of Computed tomography (CT) on lacustrine and marine sediment cores is continuously increasing, since it provides a fast, high resolution and nondestructive technique in the investigation of sediment characteristics. Micromorphological features that are not clear through macroscopic examination of the core, can now be further analyzed through high resolution 3D visualization. The present study aims on the use of this method as a tool for the clarification of different sedimentolog...

The paper deals with a design and a method of milling of the invention called ?Milling device for mechanical treatment process of fine particles?. The milling device for mechanical treatment process of fine particles according to the present invention consists of a lower flange with a milling chamber having an external part and an internal part being fixedly attached to said lower flange wherein an elastic doctor blade with brushes is arranged within said internal part. The elastic doctor blade with brushes is fas...

A complex geological history and several stages of graphite mineralization are characteristic for the perspective Ihal? deposit. Primary carbonaceous matter is associated with early Proterozoic sedimentary complexes. Polychronic metamorphism, intrusive magmatism (microcline and plagioclase granites), migmatization of rocks, and contact metasomatism (scarns) have influenced the current appearance of the ore strata. Graphite is represented mainly in flaky crystalline forms in mineral intergrowths with biotite, pyrrh...

The tectonic evolution of the magmatic rocks the Central Anatolia (CA) began at the late Mesozoic with closure of Neotethys in the region. The Central Anatolia has experienced several magmatic events including felsic and mafic intrusions originated from collisional and/or extensional tectonic events. The felsic magmatism of the CA are well reported and studied, whereas the origin and temporal distributions of the mafic magmatism are still controversial. This study includes the preliminary results of the TUBITAK pr...

This paper discusses the results from a complex laboratory studies, carried out on the lead-zinc ore from Madan ore field deposits. The Pb-Zn ore is currently processed in Rudozem concentrator, involving a sequence of three stage crushing, followed by ball mill grinding and selective lead-zinc flotation circuit. Two properties from the laboratory grinding tests were investigated: mineral liberation characteristics (batch grinding tests) and Bond ball mill work index (kWh/t). In order to determine the correlation b...

The paper presents the results of studying the technological properties of vein quartz Girvas occurrence. The mineralogical and chemical composition of the technological samples are analyzed. The distribution and composition of mineral impurities, gas-liquid inclusions in quartz are studied. When developing a deep beneficiation scheme, quartz grain sizes were selected based on the experience of enrichment of vein quartz, the size and composition of mineral impurities. Enriched quartz concentrate with a particle si...

There are the results of studies of mineralogical features of gold-sulfide ore occurrences of disseminated type of three tectonic structures of different grade of the north-eastern Siberian platform: Sololiy, Ebelyakh uplifts and Anabar shield. At the Sololiy uplift of the Olenek arch ??, superposed disseminated ore mineralization is studied in the Early Permian quartz fine-pebble conglomerates. Ore mineralization is confined to thin zones of conglomerate cataclasis and crushing, caused by tectonic impact, and rel...

The crystalline basement of the East European Platform is composed of metamorphic rocks of the Archean-Proterozoic age. They are interesting as products of fluid-magmatic differentiation of the primary crust, which led to the formation of the early continental crust. The Volga-Ural segment of the crystalline basement is located in the east of the platform. It is covered by a sedimentary cover up to 1.5-2.0 km and was opened by the deep oil drilling. Based on the study of the obtained materials it was established t...

Mineralogical and geochemical features of ores played an important role in typification of gold mineralization of the Verkhneamginskiy area, which includes the Khatyrkhay and Khokhoy ore fields. Association of elements is represented by Au, Ag, Cu, Bi in the Khatyrkhay ore field. The mineral composition of ores - pyrite, hematite, chalcopyrite, tellurobismuthite, less common - native gold, galena, sphalerite, bornite, greenockite, hessite, tennantite, bournonite. Supergene minerals are goethite, hydrogoethite, cov...

The main goal of our work was to define qualitative (geochemical and mineralogical) and quantitative composition of suspensions (solid phases), which originate in the outflows of mine waters into surface streams and significantly affect the quality of their waters and river sediments. The research was implemented on several abandoned mining areas in Slovakia, where Sb, Cu, Fe and Hg were exploited in the past. Mineral phases - mainly oxyhydroxides of Fe, Al and Mn - are transported by surface waters and are conseq...

Directional couplers can divide the input power between its outputs in different proportions. This is due to the ratio of wave resistances between two pairs of quarter-wave segments. Due to the fact that at frequencies of 2 GHz and lower couplers are also actively used, it is necessary to take care that their dimensions satisfy the radio system where they will be installed. Due to the fact that it is not always possible was investigated miniaturization as an opportunity to reduce the area occupied by the branch wh...

A new mineralogical application for mobile phones and tablets was created named MINS (Mineral Identifier for Non-Specialists). Android Studio was employed in order to implement it in Java for Android devices and is compatible with versions starting from 4.0 (Ice Cream Sandwich). MINS is an application for macroscopic identification of the most common minerals (about 99%) that exist on the upper crust of the earth. The user has the choice of identifying a mineral or to see a list with the most common minerals. In t...

The main ways that are used to solve problems and create mechanisms for protecting information are generally considered to be: technical devices, the whole set of which is divided into: physical and hardware - and software - programs designed to perform actions aimed at ensuring the protection of information. As a result of the development of computer security and information technologies, experts have concluded that the use of any one of the above methods will not provide reliable information protection. The comp...

The task of determining the potential of the field u ( x) of a bodyG , which is limited in space 3 R , is important and well known for solving both theoretical and applied problems of geodesy. The traditional approach to its solution, based on the representation of the potential in the form of series of spherical functions, has well-known advantages and disadvantages. This article discusses another model for solving the original problem in the form of an integro-differential equation u ( x) = K?u ( x), x?G , where...

We consider innovative technologies in the field of geoinformation management. While planning and implementation of large projects, for example, in the field of environmental management, both on land and at sea or in coastal zones, an important aspect is the management of natural risks using the tools of geo- information support of decision-making, based on geo-information management principles of complex territorially distributed systems, including legal framework and economic justification. The aim of the resear...

The municipal solid waste landfill in Tychy, southern Poland consists of three sites, the old one, closed in 1994, and two others still being in use. The old part of the landfill has neither any bottom liner nor any leachate collection and treatment system. Moreover, the bottom of the closed site in the northern part is continuously above the groundwater table, therefore, pollution can easily release into groundwater causing deterioration of groundwater quality and the nearby river nearby. In order to assess the i...

Modeling using artificial neural networks (ANNs) is used in most fields of production. An approach to modeling the dimensional changes in some iron-based powder metallurgy (PM) parts during the sintering process is given. The proposed model used is a multilayer neural network with a backpropagation learning algorithm. This type of neural network model gave the best results in the process of modeling. The specimens used in this study are prealloyed iron-based powders. The particle size of the powders is ranging fro...

The necessity for an integrated geographical approach to the study and modeling of ground-water dynamics in river floodplains is substantiated in the article. A preliminary and simplified classification of the types of annual ground and surface water level dynamics is proposed, which can serve as a basis for the differentiation of intrazonal floodplain landscapes. Thus differentiation is a scientific problem. In landscapes characterizing of the floodplains a descriptive approach prevails, and there are no quantita...

The article presents the methods of modeling two-phase flows. The widespread application of issues related to two-phase flows in industry encourages to familiarize with the methods of modeling this type of flows. The article presents basic mathematical models of two-phase liquid-solid flow on the example of sedimentation. In addition, numerical methods for simulating the sedimentation process are presented. Paper presents the possibility of using the Boltzmann method, the so-called Lattice-Boltzmann methods in mod...

Aquatic ecosystems of the Arctic are very sensitive to the climate change. Thermic processes inside and around water objects (lakes, rivers, wetlands) affected by endo- and exogenous factors and lead to talik formation and geoprocesses interaction and turnover. Hydrological and geophysical investigation in the Lena River delta have been carried out in spring and summer 2016-2018. Sublake and subriver taliks georadar and electrical resistivity tomography data were obtained in a field with following hydrological and...

The resistivity of reservoir rocks varies in radial direction from Rxo (resistivity of the flushed zone) to Rt (uninvaded zone resistivity). This variation is due to different content in mud filtration, formation water and hydrocarbons from the well wall to the uninvaded zone. The penetration of the mud filter in the collector and the change of the saturation states depend on the properties of the drilling fluid as well as on properties of the collector (porosity, permeability). Electric logs devices measure an ap...

As a participant of the UI Green Metric World University Ranking Network, the RUDN-University realized a complex of projects on sustainability and environment protection. Currently the university is on the 41th position in the ranking and is a national coordinator of this program in Russia. Among the main directions of the activities are the development of education on sustainability and environmental protection, resource and energy saving projects, research projects of different environmental and sustainability t...

The aim of this research was to determine the global horizontal irradiation (GHI) for Istria and Kvarner, two western regions in the Republic of Croatia with the GRASS GIS r.sun module and to compare it with the values of solar irradiation obtained from satellite images and ground measurements. Since the results obtained from the r.sun module have no quality control, the accuracy assessment was made on ground solar irradiation measurements obtained from Baseline Surface Radiation Network stations (BSRN). BSRN is a...

Air temperature influences a variety of environmental processes, having a significant impact on the conditions of living of humans and other life forms. The Brazilian Northeast is a region that comprises a diversity of ecosystems, but it is most known as a semi-arid area characterized by severe environmental conditions. This work proposes to model air temperature in Brazilian Northeast to evaluate changing patterns between 2000 and 2017 using two interpolation techniques and comparing them. Monthly average tempera...

In recent years there has been a renewed interest in utilitarian cycling due to its recognized potential in the reduction of energy consumption and pollution in the cities. BikeBike-sharing systems generate a large amount of data which can be used to improve the systems themselves, or to improve the body of knowledge on urban mobility. The open data automatically generated by the Brussel's bike bike-sharing system (Villo) is explored through spatial regression models of the number of bicycle trips at stations. The...

This article reveals main methodological approaches, which allow to construct the adequate mathematical models that describe the effective condition of the social, ecological and economic components of development of the object, system-enterprise, territory, country etc. from the perspective of synergetics. Main ideas of research about the complex socio-economic and ecological systems that are based on synergetic approach are formulated. Characteristics, factors of functioning of complex socioeconomic and ecologic...

Horizon control in underground coal mining is still largely based on the knowledge and experience of a human operator, while many other operations run fully automated in mines nowadays. Several control strategies have been developed for automatic horizon control in underground coal mines, but none of them worked satisfactorily for a long distance up to now, even if the used sensors execute their intended task already and were improved continuously. However, the behaviour of the mining system itself, especially the...

The research was carried out in Tata Valley watershed, Dambovita region, Romania, which is a tributary of the Ialomita river. The objectives of this study were to estimate the annual soil loss by applying remote sensing data and the main data for the Tata Valley watershed and obtain a spatial representation of the results using GIS techniques. The method used to determine the soil erosivity and total eroded soil quantity in Tata Valley watershed, is the RUSLE + GIS technique, adapted to the specific conditions of ...

Territorial risk analysis and assessment present current problem for optimization of these processes in regions, districts and municipalities. Threat scenarios need to be evaluated together with existing vulnerabilities in territory. From crisis management point of view, preparedness (protective measures) also need to be evaluated to form complete picture. Risk mapping allows its users represents possible approach for all these elements to be evaluated together at a same time. Vulnerability and risk mapping are us...

Autonomous passenger cars are becoming a trend today due to their role in saving human labour. However, in the field of earthmoving machinery, we can also witness a significant development in their autonomous operation. This paper deals with the possibility of using the autonomous operation of rollers and plate vibrators, intended for earth body compaction and the compaction of an upper asphalt road layer. In view of the growing share of automation and the associated computer applications for earthmoving machines,...

The regional features of the current condition of irrigated lands Zhambyl region were considered and an assessment of trends in their changes for the period from 2008 to 2017. An analysis of the technical condition of the irrigation network and the use of water resources was carried out for agricultural purposes. A regional dynamic analysis of irrigation water intake and its losses was carried out during transportation. The change of the structure of the sown areas of irrigated agricultural crops was determined de...

The characteristic of modern landscapes of the Kerch Peninsula as geologic systems in which natural and economic subsystems are inseparably connected is presented in the article. The component structure of the landscapes of the Kerch Peninsula (geological structure, relief, climate, water, soil, flora and fauna) was analysed using constructed thematic maps. The complex structure of the landscapes of the Peninsula is presented, with the indication of landscape levels, landscape zones, landscape areas. The descripti...

The conventional method of power generation is the main source of power today. With the changes in modern electronics, the uses of alternative power generation options become more and more viable. Series compensation has been successfully utilized for many years in electric power networks. With series compensation, it is possible to increase the transfer capability of existing power transmission systems at a lower investment cost and with a shorter installation time compared to the building of new, additional line...

Relevance of results. Experts note that growth of number of waste in Russia goes quicker, than GDP growth, so during the period from 2006 to 2012 the number of waste increased from 3, 5 billion tons to 5 billion tons. Constantly increasing volumes of waste cause need of elimination of their harmful effects on the environment. The main of the direction of the solution of this task is the organization of use, processing and also waste disposal. In this regard there is a problem of the choice of the most expedient de...

This study focuses on natural fiber nano-coatings - hemp and cotton modification and coating surface structure. For surface modification sol - gel technology is used. To predict the quality of the sols and the surface structure, the coatings were initially applied to different materials and tested with optical microscopy and atomic force microscopy. Samples were analyzed before and after washing as well as before modification with Fourier - transform infrared spectroscopy and energy-dispersive X-ray spectroscopy. ...

Oil prices have a decisive impact on the World?s economy. The cost of exploration and drilling of new oil fields is extremely high due to the fact that drilling works are more frequently performed in very difficult deposit conditions. On the other hand, a considerable number of already discovered and exploited fields entered a low production stage. This can be frequently helped with appropriate workover jobs in the well. For doing so, specialist workover fluids are injected to the wells. Most commonly these are in...

Corrosion represents a major problem in the flow assurance for the oil and gas industry. Carbon steel has been extensively used in oil and gas industry due to its cost-effectiveness, availability, strength, high durability and ductility. However, one of the biggest disadvantages of steel is highly susceptible to corrosion in the aggressive environments. Most of corrosion inhibitors are toxic, non-biodegradable and non-eco-friendly in nature, thus development of inhibitors based on natural resources are needed. In ...

The buildings sector currently consumes between 30% and 40% of the total energy produced in the developed countries while contributing over 35% of the total carbon emissions, most of them being built without taking into account passive strategies as well as the integration of renewable energy resources RRE. Given that the technology of solar energy is constantly increasing, adapting continuously to existing solutions is necessary. In this paper we approach the implementation of solar technologies, taking into acco...