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Currently, a lot of environmental problems are related to the development of the city. The relevance of this work is due to the population growing awareness of reaching a critical point of the negative impact of the environment on human life. In the course of the study, sociological information about the population perception of the current environmental situation in the city was collected, summarized and critically analyzed, and the population readiness to participate in solving environmental problems by organizi...

The current research aims to present land cover changes for the period 1993-2019 in the arsenic-contaminated Ogosta River valley in the context of the contaminant dispersal in the soils of the river floodplain caused by the agricultural practices and land use. The investigation is conducted for two test sites situated in the upper and lower stretch of the valley near the villages of Gorna Kovatchitsa and Mihaylovo, respectively. The changes are established for the fourth level of the CORINE Land Cover nomenclature...

In today's world, shopping represents a significant part of everyone's life. The interaction between the customer and store staff has grown to be more critical than ever. To facilitate a pleasant and engaging shopping experience, we acknowledge a market gap and a real competition for developing innovative tools that can be used by both parties: the customers, which need their requirements fulfilled, and the store staff, that can use these tools to satisfy customers' needs further by targeting the correct audience....

Soil saprophytic nitrogen-fixing nodule bacteria (rhizobia) of the Sinorhizobium meliloti species are formed symbiosis with alfalfa and can also be a host of bacteriophages. Rhizobia have a symbiotic and saprophytic life phase?s cycle. Nodules formed by rhizobia on alfalfa roots are destroyed at the end of the growing season and bacteria surviving in nodule threads and did not transformed into bacteroids are released into the soil microbiome. The last is enriched in bacteriophages, which can significantly decrease...

The generally accepted representation of global geoid/quasi-geoid models in a series of spherical harmonics expansion turns out to be inappropriate for geoid modelling in relatively small local areas. To obtain a resolution of a few kilometers requires the development of spherical functions to critically high degrees of expansion, which leads to instability of the solution for several reasons, which are discussed in the article. For that reason, to determine precise local model of the geoid, it is necessary to use...

On the base of a detailed analysis the political and social factors in the development of the world economic system, the authors is concluded that the impending global economic crisis may negatively affect the Russian economy. The analysis of the current economic and socio-political situation in Russia given in the article allowed us to identify a number of main directions of the country's development that can ensure the stability of its economy in the conditions of the impending crisis. The authors argue that in ...

Pollution and its effects on the environment have been at the centre of debates on the global stage, with growing concerns from researchers and the public. A major source of pollution is polymeric materials, which are increasingly used in various industries because of their similar properties to metal. If, in the case of polymeric thermoplastics materials we have recycling and reusing technologies when they reach the end of their lifespan or they break, not the same can be said about polymeric thermosetting materi...

The aim of the work was to optimize the process of obtaining multicomponent protein compositions with high biological value and higher functional properties than the original vegetable protein products. Was realized studies to obtain biocomposites on the base of pea protein-oat protein and pea protein-rice protein. Developed composites was enriched with all limited amino acids. For each of the essential amino acids, amino acid score was 100% and higher. Protein products used in this compositions are not in major a...

The article deals with the issue of accidents associated with hazardous substances, their prevention. Modeling of these accidents was chosen as a form of prevention. The production of dangerous toxic substances is currently growing, especially in the industry. The response to this trend is to introduce safer technological processes and preventive measures. These measures serve to prevent or at least reduce the risk of accidents and thus the escape of dangerous substances. To implement prevention, effective measure...

Europa has the densest, diversified and completely transport system on the entire world. Maritime transports have developed since ancient times (in the Mediterranean basin and the countries bordering the Atlantic Ocean) and they are still in development because they present a key point in freight transport. Europe controls one third of the world's commercial fleet and is one of the world's leading maritime centres with 329 key ports along the coast, including Rotterdam, which is the second largest port in the worl...

The aim of this work is to experimentally study the synthesis of carbon nanotubes and nanofibers by catalytic pyrolysis of methane-hydrogen mixtures, as well as to develope a kinetic scheme that takes into account the accelerating and suppressing effect of hydrogen on pyrolysis. Carbon nanotubes were synthesized in a laboratory kinetic setup with a vertical quartz reactor at a temperature of 700?. The oxide system (Fe0.45Co0.15Al0.40)2O3 obtained by combustion method was taken as a catalyst. The hydrogen concentra...

Floods are exceptional processes, observed in daily life as part of the hydrological cycle or as unusual extreme events. As a result of significant precipitation, snowmelt or/and anthropogenic pressures and technogenic disasters river flow rapidly increase causing an overflow on rivers floodplain with possible damages on the crop, households, economy, infrastructure, social life, etc. Observed consequences depend on the local conditions. They can be negative or insignificant in case of comparatively minor floods, ...

The exodus of young people from rural areas in Romania, corroborated with the decrease of the population at national level is a major problem of the country. The Common Agricultural Policy integrates this issue, finding several forms of support both in Pillar I, on direct payments, and in Pillar II, on rural development. This paper proposes the analysis of support for young farmers in the second pillar. Thus, the measures related to the support of young farmers through the National Rural Development Program will b...

The article considers theoretical basis for determining cost-effective methods of increasing the supply of oil. Describe the major characteristics of social production, improvement of production organization, the most important factors of production for the oil industry. We discuss the main characteristics of the deposits, the volume of oil reserves, its quality and costs to receive it. The growth of oil production provides indicators of technical and economic efficiency for the fields and measures to increase oil...

The article considers the dynamics of flammable substances concentrations in ventilated rooms. Ventilated rooms are used for equipment and installations where the risk of explosion is caused by the presence of flammable substances such as gases, vapours and mists. The first part presents the explosion risk associated with presence of flammable substances and the classification of atmospheres in which explosion risk is noticeable. Thus, for areas where the explosive atmosphere can be delimited inside a compartment ...

The majority of the rivers in Kazakhstan can be characterized as plain and lowland type. The flow in such rivers is uneven both within the year and over the years. In order to regulate this variability, to conserve water resources as well as to provide water for domestic use the reservoirs have been built. In Kazakhstan, there are 43 large on stream and valley reservoirs on 33 rivers, half of which are on plain, lowland rivers. One of such reservoirs, Astana reservoir is studied in this paper. It is situated on th...

At present, the issue of environmental protection is very important in the world. In Portland cement production a large amount of greenhouse gas is released, namely 8 % of all world anthropogenic emissions. CO2 emissions from cement production are associated with fuel combustion and decomposition of limestone during firing of the raw mixture. Scientists around the world are trying to reduce the amount of carbon dioxide released by replacing the main component of cement ? clinker with various additives. In recent y...

Measured sediment concentration records are important information to support water management activities. However, for various reasons, these time series could be incomplete. This paper contains options for modelling the concentrations of suspended sediments when unmeasured periods occurs. Using of various modelling strategies for is discussed and some statistical and machine learning methods are selected for this task. The results show a significant increase in the accuracy of modelling the concentration of suspe...

In recent years, the world has been plagued by a large number of emergencies that have an impact not only on the population, but also on health, property and the environment. One of the basic tasks performed by the public administration is to ensure the safety and protection of the population through various tools. One of the tools is, for example, safety planning. With the help of safety plans, it is possible to achieve the application of appropriate measures that help deal with emergencies or crisis situations a...

We offer the conceptual model of the hybrid geographic information system built by using Kubernetes, Docker containers and cloud computing. Within the study, we conducted stress tests and velocity measurements in virtual environments. Applications deployed in containers show better performance when one needs to simultaneously run the same type of isolated compute nodes. The experimental results clearly demonstrate the advantage of using Kubernetes with Docker containers to build such systems, especially in case of...

The article examines the ideological and theoretical attitudes genesis presented in the Germany greens environmental doctrine. According to the authors' position, their practical implementation will contribute to solving environmental problems inherent in modern society, minimizing risks and destructions determined by environmental factors. Based on the green party environmental doctrine analysis, the provisions are formulated, which practical implementation contribute to reducing the risk of society. The author m...

This paper describes the general architecture of the decision support system. This system is intended for solving problems of spatial planning and regional management. Spatial planning allows for the analysis and coordination of various activities in time and space, taking into account the state of the surrounding ecosystems. Application of spatial planning methods in the scale of a region allows to estimate complex influence of various activities (economic, environmental, military, etc.) both on natural and ecolo...

The article presents a novel research project aimed at analysis of historical processes at memorable places of the Tambov region associated with prominent Russian personalities using original technologies for analysis, data processing and creation of virtual reconstructions of cultural and historical heritage. It includes: development of the technology for creating 3D models of cultural heritage objects for virtual reconstruction of historically significant territories; development of the technology for analysis o...

Climate change, Paris agreement and following strategies for sustainable environment are key direction in 21st century, in order to have an environment and economy to live in for this and next generations. This topic is on the agenda of several high-level task forces at United Nations (UN) and the European Commission (EC). While some definitions and terms are still blurred and unclear, there are already several measurement indicators, which are monitored. One of 17 UN sustainable development growth (SDG) goals, nu...

The matrix of silicon carbide (SiC) is sufficiently rigid and strong, but in order to fully realize its potential capabilities, it is necessary to reduce its fragility and increase its reliability when used under shock loading conditions, which is achieved by creating ceramic composites based on it. Zirconia (ZrO2) was chosen as a hardening additive, since it has very high resistance to crack propagation and thermal, electrical, optical, strength, and other properties. Stabilization of the cubic phase of zirconia ...

Challenges related to the management of current world energy resources strongly emphasize the necessity to progressively increase renewable energy sources (RES) share in meeting electricity demand. To design efficient and sustainable energy systems, it is mandatory to consider both electrical energy generation characteristics and environment preservation targets. The main objective of intensifying RES deployment nowadays is to concurrently mitigate fossil fuels depletion and environment degradation. However, to ac...

By applied to spatial planning tasks, a multi-level spatial sustainability assessment system should be taken into account. The paper considers the district spatial level which includes the coastal district municipalities within their administrative borders. All coastal district municipalities have features of their socio-economic statement and environmental status, due to various physical, geographical and socio-economic aspects, which determines the current state of stability of the spatial system. The following ...

The paper presents a study of hydraulic modeling of the drinking water and sewage distribution network in Beclean City, Bistrita Nasaud County, from Romania. This study includes a calibrated simulation of the flow through networks (systems), which allows the elaboration of a future strategy of developing the networks (systems) of water and sewage. The need to develop hydraulic models as accurately as possible results from the fact that, by creating and calibrating the hydraulic model of a system, a variety of syst...

The aim of the present article is to research the response of the cardiovascular system of healthy volunteers to change in heliogeomagnetic activity in subauroral area (Yakutsk) in the minimum (year 2009) and in the maximum (year 2014) of the 24th 11-year solar cycle. The condition of the volunteers' cardiovascular system has been estimated according to the T-wave symmetry coefficient in the electrocardiogram (TSC), which displays the processes of myocard repolarization. Heliogeomagnetic activity has been estimate...

An interest to bacteriocins as natural alternative for antibiotics and chemical preservatives is grow at present. The selection of novel strains producing antimicrobial peptides is in focus. The probiotics are preferable because they are recognized as safe and thereby can be applied in medications, foods, feeds. Moreover, the benefits of probiotics for human and animal health is proved. The growth kinetics of industrial probiotic strains Lactobacillus plantarum B-11007, Lactobacillus salivarius B-2214 ? Lactobacil...

The recast of the Energy Performance of Buildings Directive 844 from 2018 stipulates the need of meeting the criteria of nearly Zero Energy Buildings, at both new and existing buildings. Although that the target is starting to get embraced by the design community, the process of modelling such buildings is very time consuming. The modelling and simulation of the construction joints, known as thermal bridges implies knowledge regarding numerical simulation and also the acquisition of commercial licenses in order to...

Current problems of Russian subsurface users (volatility of the global energy market, ambiguity in the behavior of traditional consumers, an increase in the share of alternative energy sources in the global fuel and energy balance, low level of technological efficiency of fixed assets, insufficient processing depth, high losses of hydrocarbons, lack of technologies for recycling resources, methane emissions, etc.) reduce the environmental and economic efficiency of production, which, in turn, this leads to a deter...

The purpose of this paper is to determine the rate of methane (explosive gas ) and of carbon dioxide (axphysants gas ) in the mine workings of Praid salt mine. Currently in Romania there are six salt mines which exploit the salt through underground mine workings: Praid salt mine, Tg. Ocna salt mine, Slanic Prahova salt mine, Ocnele Mari salt mine, Cacica salt mine, and Dej salt mine. Of these six, in three salt mines occurred gas and salt eruptions: Praid salt mine, Slanic Prahova salt mine and Tg. Ocna salt mine....

From the analysis of documents of strategic planning for the development of the region, it follows that the Arkhangelsk region assigns tourism one of the priority areas of development. At present, the region is one of 8 key zones of economic development of the Russian Arctic, where along with industrial and transport nature management, recreational, in particular tourism, is also considered a priority. The article considers the main factors in the development of ecotourism in the Arkhangelsk region. The analysis a...

In this study on speaking about minerals, we can use the elements from them in high-tech technology in everyday life. The pegmatites are surrounded by gneiss with muscovite, garnets, staurolite; mica schists with garnets, staurolite, kyanite; and amphibolites. In the Con?u area pegmatites appear in tabular veins form, or irregular lenses, arranged by accordance with mica schists of the host metamorphic rocks. The pegmatites veins have a thickness that varies between 2 and 10 meters in the central area and developm...

The Auto-Regressive Integrated Moving Average (ARIMA) model is widely used to forecast non-stationary time series data. In a model of ARIMA (p, d, q), AR is autoregressive, p is the number of regression terms, MA is the moving average, q is the number of moving average terms, and d is the difference time to make the data a stationary series. It can be used to forecast the trend of geomagnetic disturbances. Firstly, the non-stationary historical data xt is processed by the d difference to develop the stable histori...

The Barents Euro-Arctic Council (BEAC) is the forum for inter-governmental co-operation on issues concerning the Barents region. BEAC unites 13 regions of 4 member countries ? Finland, Norway, Russia, and Sweden. The Working Group on Environment (WGE) deals with major environmental challenges. Back in 2003, BEAC issued the Barents Environmental Hot Spots List, which included 42 major polluters located in the Russian part of the Barents region [1]. WGE worked out the ?Criteria and Procedure? approach aimed at promo...

Based on the processing of the cartographic materials, the literary sources and our own field researches, the conditions of the formation and the structure of the banks of the accumulative compositions of the north-western coast of the Sea of Azov have been disclosed. The coastline of the north-western coast of the Sea of Azov forms smooth bends, and only long sand forelands give it some ruggedness. The modern geological-geomorphological processes (abrasion, landslides, rockfall slopes, accumulation) and the litho...

The aim of the article, in the pre-research issues, was to examine the scientific questions which cover the main ergonomic problems in the work environment of the training workplace for training of future air traffic controllers in the conditions of the educational institution. The methodology of researching the problem to achieve the goal of the article was based on an expert method, on a guided interview with instructors of practical training for air traffic controllers to obtain an expert opinion on identifying...

The updating of the used inflow data to the reservoirs from Annex 1 of the Water Act has been developed for the needs of the Ministry of Environment and Water (MoEW) and for the annual schedules of their water use. Monthly inflow with a certain probability of exceedance (PE - 50%, 75%, 95%) were estimated. The results of the development are uploaded to the MoEW website(https://www.moew.government.bg).In the report are presented and new unpublished results of the annual security assessments - annually inflows with ...

In this paper we propose the criteria of an information model that will allow, based on input expert data, to derive a risk assessment of unmanned aerial vehicle (UAV) flights for mountainous environmental studies. To create an information model, it is necessary to develop a mathematical model of risk assessment and informative content of the model within the framework of the problem under study. For the model input, there is a space of mountainous terrain for which we define set of criteria as a threat to safety ...

Since Latvia joined the European Union (hereinafter the EU) in 2004, socio-economic territorial development in the regions of the country has been unbalanced, increasing regional disparities. At NUTS3 level, there are six statistical regions in Latvia. Zemgale is one of the regions of Latvia. Since 1992, two administrative and territorial reforms (hereinafter ATR) have been implemented in Latvia, and in 2021 it is planned to carry out the third administrative and territorial reform. In June 2020, the new ATR was a...

This work provides justification of the opinion that over the past historic periods natural resource management did not cause serious damage to the environment. The recent epoch differs from the previous ones in a large set of natural resource management types and inter se in the presence of environmental management systems to transform the landscape sphere. In particular, the article examines the mining complex impact on the structure of natural (landscape; hydro-geological; environmental) resources. The purpose ...

Magnesium oxychloride (MOC) cement-based composites were studied in the presented paper. As filler, silica sand was used and partially replaced with fly ash from coal combustion. First, the chemical composition and basic physical properties of raw materials were tested. For the hardened composites, bulk density, specific density, and total open porosity were measured. Among mechanical parameters, flexural and compressive strengths were determined. The thermal performance of composites was studied using a transient...

Manure is characterized by a complex multicomponent composition and can be considered as a source of nutrients for microorganisms and plants. Moreover, manure has a high level of biogenicity. Therefore, this waste can be considered as the main resource for organic fertilizer production. Currently, there are many technological solutions for processing of renewable animal and poultry waste. Fast solid-phase fermentation of the organic feedstock is a most promising technology. Five technological solutions for the fer...

?Ensure sustainable consumption and production patterns? is one of 17 goals of The 2030 Agenda for Sustainable Development, adopted by all United Nations Member States in 2015. The target is by 2030, substantially reduce waste generation through prevention, reduction, recycling and reuse and the key indicator is the Recycling rate measured by tons of material recycled. The aim of the research was studying of the regional aspect of municipal waste management disparities in Bulgaria. The progress for achievement of ...

Urban noise is affecting an increasing number of people and this is why it is becoming a major environmental issue, being a known fact that it affects all human activities and constitutes a stress factor with negative effects on health. It can affect the population both physiologically and psychologically, having an influence on the elementary activities such as sleep, rest, study and communication. Noise in the environment - a harmful and unwanted sound from the outside - is spreading, both in duration and in geo...

In the paperwork are presented new aspects regarding test results of galvanic cells used in the apparatus intended for use in explosive atmospheres. In the first part of the paper was presented the explosion risk. The explosion risk involved by the presence of technical equipment in areas endangered by the presence of flammable substances is manifested through two sources of risk. The spark ignition is due to electrical equipment, electrostatic discharges and mechanical impact. The mixtures of air with flammable s...

Solid waste disposal facilities are sources of significant negative impact on the environment. In this paper, waste disposal facilities (landfills, dumps, sludge and manure storage facilities, etc.) are considered as open geo-ecological systems that constantly interact with the environment through the flows of substances and energies. Factors that increase the negative impact of landfills are waste fires, as well as accumulation of explosive gases, especially methane. Due to the fact that a municipal solid waste l...

Paper analyses the principles and industrial applications of thermoelectric generators and energy harvesting devices in their almost 200-year history, e.g. from first documented application in 1840 till the current applications focusing on thermoelectric generators using waste heat from fireplace furnaces. Moreover, the energy harvesting devices as low power applications are involved in the paper. Applying the thermoelectric generators into existing products gives the managers an ability to innovate, be unique and...