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The article presents the results of the studies (in 2018 and 2019) of the level of accumulation of polychlorinated biphenyls (PCBs) ? the most toxic compounds from the number of persistent organic pollutants (POPs) in the snow cover (SC) of the territory of Almaty agglomeration, area of about 940 thousand hectares. The contamination of PCB SC has been established, especially in urban areas and adjacent to large industrial hubs. In snow samples up to 29 individual PCB congeners are identified, which is an indicator...

The Upper Devonian shales are predominantly carbonate, carbonate-siliceous thin-layer rocks with a high content of organic matter. Considered formation is widespread within the Volga-Ural and Timan-Pechora basins in the European part of Russia. Various estimations show that the hydrocarbon resources of the Upper Devonian shales range between hundreds of millions to billions of tons of oil. However, recovery of such hydrocarbons is significantly constrained due to the high heterogeneity and complex structure of roc...

Nowadays a major issue in managing the industrialized/logistic zones is represented by the environment protection. Circular economy or industrial ecology can be a sustainable model. The challenge for the economic actors of the Danube is the promotion of an Eco-friendly mode of transportation. The port administration and port operators should find solutions to implement an industrial ecology regime. Adapting an Eco-innovative solution should contribute on the number of the additional partners and clients. This cont...

The Alternative tourism works in conditions of complex, dynaamic and difficult foreseeable environment. This necessitates analysis of the Supply Chain System (SCS) parameters and research on possibilities for modelling in optimal range. To achieve the aims and objectives of Tourism SCS is particularly important Distribution Network Structure (DNS). Alternative tourism characteristics and complex nature of Green Lodges and Guesthouses require integrative approach for analysis of the SCS. This scientific research pr...

Due to their properties and low production costs, plastics have replaced a number of construction materials and are being used more and more. To maximize the potential of plastics at the final stage of their life, you need to choose the right way to manage the resulting waste. In accordance with Circular Economy, the first form of using this waste should be material recycling, energy recovery may be an alternative to this method of management. It is unacceptable that in the era of today's technology this type of w...

In the development of a sustainable society and an active approach to environmental protection, it is essential to focus on building energy efficiency and its increasing. Within the member states of the European Union, the process of increasing the energy performance of buildings is ensured by increasing the requirements for new buildings through legal and technical standards. This process is supported financially by various EU funding programs. One of the useful helpers in spreading awareness of the energy perfor...

The added value generated by the fisheries sector in 2017 was only 0.15% of the total value added in Latvia, in the meantime its significance in external trade was higher, as the sector accounted for 1.8% of the total value of export production (EUR 206 million). The export capacity of the fishing sub-sector is mostly determined by the development of the fish processing sub-sector. Canned fish form 35% of the Latvian exports but this product group faces challenges of product and market reorientation due to decreas...

The contribution focused on the investigation of the potential in making use of the mining assets that in the past have been employed in extraction and processing mineral wealth of the Spis region. One of the possibilities is in employing them as part of mining tourism, a less traditional form of experience-based tourism. The region abounds in a great number of unique old-time mining works offering a high potential for preserving objects of underground mining, establishing open-air museums, educational paths as pa...

A total of 13.2 million tons of poultry meat were produced in 2017 in the European Union, with Poland?s contribution to that production being the greatest (17.7%). The amount of poultry manure generated in Poland is estimated to be on a level of 3.2 to 3.5 million tons per year. Such a significant mass of waste constitutes a problem for the environment. Due to its properties and the scale of the problem, the management of poultry manure still constitutes a major challenge as well as a field for research. Poultry m...

In the last decades the energy consumption of data centers has increased exponentially. The high energy consumption is due to power consumption of the IT resources, to the cooling system and to the inefficient usage of the resources. From the total power consumption in a data center one half is consumed by active servers and another half is consumed by the cooling system, network of the data center etc. There are several techniques for increasing the efficient usage of the resources in a data center. One of these ...

The paper considers the problem of velocity model reconstruction of an elastic medium in the problem of monitoring the zones of underground nuclear explosions. The inverse problem can be solved with help of finding solutions for a set of forward geophysical problems. Main problem is to find the location coordinates and treat to find the characteristic size and shape of cavernous object in entire isotropic elastic media. To realize it the problem statement and the description of basic methods to perform full seismi...

Practice-oriented learning is the process of students mastering an educational program in order to develop their practical skills through the implementation of real practical tasks. The basis of practice-oriented learning is the optimal combination of education with applied training. The introduction of a practical-oriented approach to the educational process is determined by the need to search for adequate educational technologies - a set of tools and methods for teaching students to successfully implement the ef...

A long-term prediction of coastal profile evolution is done basing on several years' measurements. The adopted diffusion model is first calibrated against real data obtained from over more than 20 years measurements, and then extrapolated. A realistic prediction is then made by solving numerically a diffusion equation with coefficients obtained by the extrapolated values. In previous studies, taking into account the time dependence of the coefficients, we were able to reduce to 10 years the number of time measurem...

The purpose of this research is to analyze the data recorded on instrumented structures in Bucharest and adjacent free-field seismic stations during the last moderate earthquake that occurred on 28th of October 2018 in the Vrancea seismic zone. The earthquake had a 5.5 moment-magnitude, a depth of 147.8 km, and it was felt on a large area of Romania, generating very little damage in Bucharest. In the last five years, the National Institute for Earth Physics has deployed permanent instrumentation (accelerometers) a...

Low velocity compressional wave (P-wave), Vp values, have been observed from the lunar geophysical measurements made during the Apollo 14, 16 and 17 missions. These low velocities are attributed to lack of water, low soil compaction as well as the non-consolidated nature of the regolith. The microgravity lunar regolith simulant velocity experiment (?-SVeLSE) aims to determine if there is any dependence of gravitational force on the seismic longitudinal velocity measurements and thus correlate with data previously ...

The preliminary palynological results of analysis a 524 cm long continuous sediments core from the Lake Big Miassovo (South Urals, Russia) are presented. The core was collected in July 2018 from central part of the lake from a depth of 24 m. Palynological stratigraphy has been divided into four pollen zones on the basis on changing pollen abundances and taxa composition. The predominance of Betula pendula, Pinus sylvestris and Artemisia pollen in sediments has been established. The prevalence of desert plants (Art...

Snow cover is an important climatic factor and its changes have a strong influence on water resources and water balance in Bulgaria, as well as on the development of agriculture, tourism, transport and others. The main objective of this study is to analyze the long-term time series of snow cover depth and snow or mixed precipitation types, as well as to summarize the results for each administrative district in Bulgaria. Data from 246 weather stations of the meteorological network of the National Institute of Meteo...

Investigations on coke-bed relations with acidic manganese ores have been reported number of times. The correlation between the mineralogy, property, reactivity of the ore and the products during the production of high carbon ferromanganese have been reported. A theoretical study has proven that the energy consumption of different basic South African manganese ores were very dependent on the chemical composition of the feed. This has a direct impact on the phases that form in the prereduction, reduction and conseq...

The purpose of the paper has been presenting the evolution of concentrations for four main air pollutants in Craiova, so as to show the situation of air quality in this major city in Southern Romania, also finding the best statistical model to fit the recorded data for particulate matter with diameter of less than 10 microns transported by the wind within the urban area. In order to accomplish this purpose, experimental data have been gathered during the entire year 2018 in the above-mentioned town, by two air qua...

The present Article discusses recent successive processes dynamics in naturally renovated secondary phytocenosis of landslided territories of rich and diverse mountainous Adjara region. The comparative analysis of soil cover productivity level, floristic composition and cenotic structure of secondary phytocenosis and alongside slopes are made for identification of successive serial stage. The researches show that at lifeless substrates of landslided slopes, phytocenotic structure is formed with gradual establishme...

College of Logistics is engaged in the research of activities within logistics processes from production support to complete logistics chains. In this context, work is being done on the analysis of logistics processes according to the Industry 4.0 concept. The aim of the paper is to show the application of this approach in the teaching of subjects focused on logistic processes. In the paper, we want to show an attempt to manufacturing/production logistics ?as a service? based on digital twins. (We understand that ...

In this paper stochastic model is proposed to estimate the probability of forest fire from anthropogenic load. A point source of anthropogenic load is considered. For example, a rural settlement, a camp, an industrial site, which are located in controlled forest-covered areas. Mathematically, the following model can be formulated. Let?s consider circle with radius in the some set. Then the cumulative distribution function (c.d.f.) of ignition near the neighborhood of the point X0 can be defined. Obvious that all p...

Backward-compatible software allows to change its libraries without rebuilding and adapting the interface used for interaction between its components or other applications (application programming interface, API). Application binary interface (ABI) compatibility is important for application portability. There are ready-made solutions to verify binary compatibility, such as libabigail and ABI-compliance tools. Such tools have several disadvantages. For example, libabigail works only with libraries containing DWARF ...

The article will attempt to highlight the contemporary problems faced by local selfgovernment in the conduct of environmental policy in the administrative-territorial units. The role of the administrative and territorial units in the organization, management and control of the implementation of the environmental policy in the municipality will be presented in accordance with the areas of competence and the possessions. We will also try to outline the distribution of the responsibilities of the local authorities an...

The goal of this paper is to highlight problems of development modern approaches to design the ecological innovation systems on different levels of organization. There is investigation the role of environmental innovations in solving some ecological and economic problems for providing ecological safety and sustainable development. The functional model of the environmental innovation system has been developed. This model is based on system approach and analysis of innovation process. The unified structure of the gl...

Model for a change of the biosystems states on the grounds of Markov chains is offered in the work. One of the main problems of management of the biosystems states is the study of the mechanisms, which determine dynamic features of the processes, taking place in the natural environment. Therefore, there is a necessity in the development of special methods, allowing to study dynamic properties of natural objects without subjecting them to ruination. Naturally, a mathematical modeling method may satisfy this demand ...

An increasing proportion of waste in megapolicies belongs to food waste, including waste of food industries and catering. Currently, this type of waste is practically not processed in Russia and disposed in landfills. However, technologies for food waste processing are known and include composting, accelerated anaerobic digestion, biogas production, etc. This paper discusses the innovative technology of food waste use in the form of a substrate for growing black soldier flies (Hermetia illucens) to produce melanin...

The article deals with the design of an alternative meteorological network, whose inexpensive metering devices would be installed on non-specified mobile means or at general aviation airports to collect selected spatial data. It analyzes the need for a minimum level of equipment for meteorological measurement systems to ensure the professional collection of analysis and visualization of specific spatial data. The process of analyzing the collection, analysis, and visualization of specific spatial data will also be...

Digitalisation is rapidly evolving worldwide, thus information exchange and electronic products have become an important part of life as well as e-services, which need to be provided not only by companies but also by public authorities. Expansion of digital technologies is seen as an economic, technological and social development phenomenon. Higher education plays a key role in preparing future generations and exploiting the opportunities of the digital economy, thus it is essential that they actively use the oppo...

The information technology input for the building life cycle is more and more intensive, starting with design, through realization and including the use and the operation of the building. The progress in this field is represented by Building Information Modelling (BIM). BIM is in its base object-oriented 3D model of the building, which includes information about the structure, elements and their parameters. This paper is aimed at the proposal of information model for documentation and management of pipeline bridge...

Gelnica is a town in the Kosice Region of Eastern Slovakia. It is located in the northern part of the Slovak Ore Mountains, in the Hnilec river valley, which flows a few kilometers downstream into Hornad. The town lies at the both banks of Hnilec, has an altitude of 375 meters and is located around 38 kilometers from Kosice. Gelnica is a city with rich mining history and by precisely utilizing its history we can develop tourism in the region. Beside history there is beautiful nature around the city, which offers m...

Phosphates are one of strategic mineral resources that provide the food safety of any country. The specific feature of the raw-material base in the Kola region is the endogenic type of apatite deposits. All industrial reserves and resources of apatite-nepheline ores (ANO) are confined to PZ alkaline-ultrabasic carbonatite complexes and, mainly, to the Khibiny massif (KM). 15 unique apatite-nepheline deposits and occurrences are located here. Some of them are the world-class scale. ANO of the KM are highly eco-frie...

New functional foods produced by fermentation of pretreated with amylolytic and proteolytic enzymes cereal raw materials suspensions by probiotics are presented. Whole meal wheat flour comprising organic compounds and microelements was used as source of nutrients. Duozyme (Novozymes) amylases (1% by weight of the substrate) and Protex 40E (Genencor) proteases (2% of the protein content in flour) were applied for hydrolysis. The starter culture was one of the gram-positive probiotic lactic acid bacteria Lactobacill...

The relevance of the results. The experience of the EU countries shows that the process of involving regions in innovative development can be successfully carried out on the basis of "smart specialization" of the regions. A number of specialists consider "smart specialization" as a basis for the formation of both innovation and socio-economic policy. "Smart specialization" of regions allows to achieve 3 main goals: to choose priorities of interregional interaction; to involve in this process various organizations ...

The article is devoted to the implementation of predictive data analysis in energy resource management systems. An analytical review of modern methods used to verify information about the energy and resource consumption of distributed objects and the construction of mathematical models for its forecasting has been performed. It is reflected the positive and negative aspects of the use of predictive analytics as a source of data for planning the activities of organizations. The need for implementation is justified ...

The market for electricity production from renewable sources is characterized by very high dynamics of change. This applies not only to total output power, but also to technological changes in waste production and management. Proper planning should prove to be a key issue for implementing the circular economy. Proper environmental assessment is a very important part of the decision-making process. Usually, we used current data to assess the environmental impact. In a rapidly changing environment, this can lead to ...

This paper presents the problem of solar energy conversion into electricity using photovoltaic cells. The mathematical study of PV cells could be made by two models: single diode model and double diode model. By connecting in series several PV cells a PV module is obtained. Small PV power generators are made by connecting multiple PV modules to form a PV array. Photovoltaic panels can be arranged in various configurations. Beside the insolation level (G) and ambient temperature (T), the PV cell power output depend...

In this paper we have analysed the existing methods of pest and disease field control on the basis of solar powered equipment and apparatus. The necessity of the presented research came from the considered problem of crop losses and reduction of product quality. We have highlighted the advantages of using the electrophysical method for monitoring the number and type of insect pests. The novel construction of the light trap is a three-ring, three-slot and single-slit for monitoring the number and species of insects...

The matter of managing water resources has been gaining great momentum during the past decades, even in areas where abundance of water is currently available. With ongoing climate change, vital supplies should be handled by using best practices in order to gain knowledge and experience in case of unfavourable future scenarios. Analysis of spring discharge has led to a description of the reliability of a given spring according to its response to precipitation and snowmelt as certain regularities can be distinguishe...

The study was conducted to study the effect of cerium dioxide nanoparticles on the survival of zebrafishand the microbiome of their intestines. With respect to the intestinal microbiome in the control group, it was registered that the majority of the identified bacteria belonged to Proteobacteria. A peculiar action of CeO2nanoparticleson the intestinal microbiota was an increase in the number of Firmicutes, in particular, Bacilli class bacteria, and a decrease of Proteobacteria phylum, it was manifested in the flu...

The paper solves the actual problem of assessing the quality of data transmission over atmospheric optoelectronic communication lines in computer networks. The topologies of the simplex infrared data transmission channel are analyzed. The calculation of the optical system is reduced to determining the fraction of the radiated infrared power that falls on the photodetector. The total loss of the optical information signal is determined due to the mismatch of the parameters of the transmitter and receiver of the inf...

Aerosol particles, despite their small size, have a great influence on climate change and on human health. Aerosol optical depth (AOD) is one of the main parameters characterizing the scattering and absorbing effects of solar radiation in the atmosphere, therefore creating a methodology for researching the AOD variability is a very current task. Nowadays, the AERONET solar photometer database for the Black Sea is represented by 2 functioning stations: Galata_Platform (Bulgaria) and Gloria (Romania), which is not e...

The topicality of the issue: The quality of education is one of the indicators and is a foundation of a sustainable development of the country. Therefore, the focus of attention in educational reforms in Latvia is quality education. Quality education is a dynamic concept that evolves over time and is a subject of change in line with changes of social, economic and environmental conditions. In this paper, the understanding of quality education is related to meeting the needs and expectations of customers. The major...

The increasing amount of fiber on wheat flour brings some deleterious effects on dough structure, such as the increasing of dough stickiness and fermentation tolerance decreasing. Also it has a negative influence against other properties of dough such as handling and rising properties. Fiber addition usually causes a decrease in bread volume and breadcrumb loses its elasticity. So, we had investigated if the xylanase addition could counteract those deleterious effects. Positive action of xylanase in dough could be...

At the moment tourism industry in Europe and the whole world is undergoing significant changes: tourist travel habits are changing, the importance of environmental quality is increasing, the use of e-commerce is increasing, the variety and number of tourism products is increasing, and new tourism destinations are emerging. Considering the globalization processes and intensified competition, Latvia needs to identify its competitive advantages in developing tourism products and environment with greater sustainable d...

Factor analysis of three-hour dynamics from the winter solstice 22.12.2013 to 21.12.2014 of four meteorological parameters: atmospheric pressure; air temperature; relative humidity; dew point temperature was carried out by the method of identification of stable regularities (weather station Yoshkar-Ola, Russia, 2917WMO_ID=27485). The sample capacity was 2917 rows. The correlation coefficient increased to 0.5065, which is more than 0.4583 for a seven-year data set. The ranking of the factors changed only for depend...

Factor analysis of three-hour dynamics for the vegetation period of birch leaves from 01.05.2014 to 30.09.2014 of four meteorological parameters: atmospheric pressure; air temperature; relative humidity; dew point temperature was carried out by the method of identification of stable regularities (weather station Yoshkar-Ola, Russia, 2917WMO_ID=27485). Power sample consisted of 1222 of the row. The correlation coefficient 0.4677 is less than 0.5065 for the year between winter solstices, but slightly more than 0.458...

Concrete is one of the most important and useful materials in the construction sector, which, unfortunately, has an adverse impact on the environment. It is evident that correct procedures for designing concrete structures need to be created. The sustainability approach is a key conceptual principle to be considered in cement and concrete production all around the world because about 7 % of global CO2 emissions are produced by cement manufacturing. An indicator expressing quality, with regard to sustainability, is...

The assessment of the vulnerability to pollution/contamination of natural mineral water is of maximum importance for long term exploitation of such a specific aquifer. A physically-based approach on the vulnerability should be based on three factors describing a pollution event, which are, the contaminant transfer time from the hazard location to the protected 'target', the level of contaminant concentration potentially reaching the 'target' and the contamination duration at the 'target' [1]. The main purpose of t...

In recent years, due to the rapid development of astrophysics and the capabilities of modern technologies, a huge amount of astronomical data such as type Ia supernova, cosmic microwave background anisotropy (CMB), acoustic baryon oscillations, weak lensing and large-scale structure have been obtained. In this regard, a fundamental discovery was made, which showed that our Universe is expanding with acceleration. To describe this phenomenon, many models have been created. One of the main directions is the modifica...