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advance has provided humanity request to raise its quality of life, registered trends anyhow pointing out that technical advances could bring not only desired impacts but also objectionable ones. For finding appropriate answers to recognized challenges the concept of sustainable development has been defined. By considering made progress in mobility field, the current vision is to succeed shaping human mobility not only on a global level, but also on a cosmic one. This seems to be possible by enlarging the idea of ...

Urban areas are very dynamic environments, subject to continuous expansion and growing population, with land use changes influenced by the needs and dynamics of the population. Using remote sensing techniques applied to Sentinel-1 GRD images, some change detection patterns could be revealed for Bucharest city, for a period of three years (2016-2019). As the largest city in Romania, the main university center and the most important industrial and commercial center, Bucharest offers a wide range of educational, inve...

Integrated assessment of ecological status and ecological well-being of water bodies based on monitoring presupposes attributions of the aquatic ecosystems to definite gradations of trophic state and level of pollution. In really these attributions are carried out by means of multi-criteria evaluation. The evaluation uses a number of parameters. Each of them must be indispensable, and the parameters taken together must be sufficient for the precise evaluation. Of course, each of the parameters must be suitable for...

The topic is up-to-date, related to the full use of organic materials in crop production and livestock breeding. This is part of the goals of the circular economy and is successfully linked to the need to maintain a positive balance of soil organic matter in agricultural lands. The problem is an important issue for sustainable agriculture on arable land but has a different meaning in different soil types. Organic fertilization is an effective method for maintaining soil fertility. Two soil types were used - Luviso...

Pea plants (Pisum sativum L.) is a high-value agricultural crop in the Far North regions. It is usually using as a fodder crop for livestock, but not as agricultural crop, since pea fruits do not mature in the harsh Arctic climate. In this regard, the use of environmentally friendly plant growth/development stimulators to accelerate the maturation of peas and other legumes is promising for the development of agriculture in the unfavorable conditions. As a possible source of biologically active substances of natura...

Whisky is one of the most consumed alcoholic beverages in the world obtained from cereals. By-product and waste management are considered significant economic and environmental issues in whisky production. The aim of this study was to assess the components of spent grain (draff) resulting from the only factory in the whisky industry in Romania. Spent grain consists of layers of peel, pericarp, and seeds with residual amounts of endosperm and aleurone from malt used as raw material. Spent grain was stored at -18 °C...

In the literature, the quantities describing the physicochemical parameters describing the combustion processes are: calorific value, cetane number LC, auto-ignition temperature, solidification point, viscosity and surface tension, and heat of vaporization. This article shows that another parameter influencing the combustion process in a thermodynamic engine, which is an engine, is also influenced by chemical bonds between atoms. Selected 11 alcohols differing in the number of chemical bonds between carbon atoms (...

Legumes are nutritious ingredients that can be used in bakery industry. However, in order to minimize their antinutrients contents and unpleasant flavor, germination can be applied. The aim of the present paper was to investigate the proximate composition and minerals profiles of composite flours made of refined wheat flour and germinated legumes (beans, lentil, soybean, chickpea and lupine) in different levels. The results showed an increase of protein and ash contents as the addition level was higher, while a re...

Environmental pollution in industrialized regions has a negative impact on public health status. Excessive accumulation of heavy metals in the human body induces disturbances in the adaptation processes to changes in the quality of the environment, including changes in the immune, humoral and nervous regulation, which can lead to the early development of ecologically caused pathologies in children. Purpose of work: to study the peculiarities of the immune profile of the child population in an industrialized region...

The Ogosta river catchments is one of the main water systems in North Bulgaria. The present study focuses on the characterization and analysis of the chemical peculiarities of the water in the upper part of the catchment area of the Ogosta river. It is based on a series of chemical analyzes of water samples collected during field research in the river monitoring area. The results obtained from the four basic different control points taken during the study. The investigation includes field and laboratory research o...

In the context of global climate change and the increasing anthropogenic impact due to the process of intensiveness of nature management in the Arctic coastal eco-socio-economic systems, there is an increase in the production of risks of natural and anthropogenic origin. The purpose of the paper is to substantiate and develop a classification system of risks of Arctic coastal nature management, sources and factors of their production as well as possible relationships between structural elements, which makes it pos...

The climatology of hot days and extremely hot spells on the territory of Bulgaria has been studied on the basis of daily data for maximum air temperature during the warm half-year in the period 1961–2019 from 115 meteorological stations of the National Institute of Meteorology and Hydrology (NIMH). The empirical distributions of daily maximum air temperatures by selected stations representative of the non-mountainous regions of the country (below 1000 m altitude) have been investigated to determine the correspondi...

The calculation of geodetic coordinates ??,??,?? of points on the Earth's surface or in near-Earth space using the spatial geocentric coordinates ??,??,?? obtained by GNSS determinations, has wide application in geodetic practice. The direct problem consisting in determination of ??,??,?? with given ??,??,?? is solved with the established Helmert formulas. The inverse problem (determination of ??,??,?? from ??,??,??) is more complicated, the difficulty is related to the determination of ?? and ??. For the determin...

The focus of this study is detection of the deformations of the Earth's surface caused by March 3 2021 earthquake using Differential Interferometric Radar Synthetic Aperture technique. This method takes advantage of the remotely sensed SAR data provided at no cost by ESAs’ Sentinel-1 mission which are often used for creation of topographic maps as well as for detection of ground motions. The final results of this processing deliver reliable information about the displacements caused by the mentioned events with ce...

Coal production in the Socialist Republic of Vietnam (SRV) is a strategic industry that provides resources to many sectors of the economy, including the energy industry, metallurgy, and construction. The distinctive characteristics of the Vietnamese coal industry are a high concentration of operations, the depletion of readily available reserves, and, as a result, an increase in underground mining activities, which already account for more than 60% of coal production. Coal mines belonging to Vinacomin, which is a ...

Violation in technologies of using and storing the organic animal husbandry waste is leading to deterioration in soil sanitary state and agrocoenosis. As a result of increased biological pollution, soil self-cleaning ability is decreasing, which leads to negative changes in its biological diversity and biological activity, arrival of toxic compounds in high concentration, deterioration in vegetable cultivation products quality, state of environment and human health. In this regard, evaluation of the soil sanitary ...

Malt is the essential raw material for beer production. Currently, in Europe the most used cereal for beer is barley due to its many advantages in the manufacture of malt. Recently, research has intensified to replace this raw material for beer with other cereals or pseudo-cereals. These include buckwheat which does not contain toxic prolamins to celiac disease patients. Buckwheat is an annual plant of Polygonaceae family and is produced in many countries for its characteristics such as high economic value, easily...

Eleven stations of the Bulgarian seismological network - National Operating Telemetry System for Seismological Information have been used for an assessment of the stations' corrections (site effect), to account for the impact on the seismic waves of the low-density layer immediately below the seismic stations, amplifying the signal. Nakamura's method for calculating the ratio of the spectrum of the horizontal component to the spectrum of the vertical component (H-to-V) is applied. Data from 20 local and regional e...

Soilless hydroponic cultivation of cucumbers (Cucumis sativus L.) has expanded rapidly during the last few decades. One of the key factors in achieving high productivity in industrial greenhouses is the choice of growing medium. Rockwool has become dominant, especially in Europe. However, in addition to energy consumption during production, landfilling of rockwool as a non-biodegradable material is expensive and poses an environmental risk. Therefore, there is increasing use of organic substrates in the soilless c...

The presented paper deals with the issue of assessing the condition of winter wheat (Triticum aestivum L.) stand during its development in the spring period. The field experiment was established in 2020; two plots sized 25 ha and 16 ha were selected with a model plant of winter wheat. In the spring period (BBCH 35 and BBCH 51), both plots were monitored using an unmanned aerial vehicle (UAV) and Sentinel 2 satellites. After the end of the monitoring, spectral analysis of pictures taken was made and a basic NDVI ve...

Reducing emissions of nitrous oxides in the agricultural sector is one of the mainchallenges. Stable isotopes are one of the tools that record information on changes ingreenhouse gas production, transportation and emissions. The relationship between theprocesses in soil and emissions entering the atmosphere. Stable isotopes, which are directisotopes of nitrous oxide emissions from soil, are already recognised as a promising toolfor tracking atmospheric nitrous oxide emissions from various studies. The purpose ofth...

The COVID-19 pandemic has caused large-scale institutional and behavioral "shock effects" in many fields of human activity, including education. All over the world more than 1.5 billion of students at schools and universities have been unable to attend classes from time to time [1]. Various countries and communities have been forced to look for quick decisions on digital learning platforms [2]. This gave a remarkable boost to online learning. At a time of crisis educational organizations should carefully think ove...

Modern town and regional planning was shaped institutionally under the conditions of industrialisation and the associated growth in the economy and population in towns and industrial agglomerations. The aim is to manage this growth and create the conditions for its continuance with the smallest possible negative impacts on conditions. The main resources for ensuring problem-free growth consists of seeking out suitable areas for the construction of new housing and industrial plants, and the regulation of constructi...

Frequency of storms and wind speeds in gusts had been increasing in Northern Europe in last decades, causing more damages to forest stands. Establishment of mixed stands had been suggested as one of the methods to reduce wind damages in future, however, empirical information on actual efficiency of this approach is still limited, especially in relation to summer storms. Therefore aim of our study was to assess summer storm damages in mixed birch spruce stands. Area influenced by the storm of June 2021 in Northern ...

The use of electrical equipment in potentially explosive atmospheres requires special attention, namely from the point of view of their construction and maintenance. Together with the technological developments, these objectives can easily be met, objectives which are defined by European standards concerning the construction, use and maintenance of explosive proof equipment. Evaluation of explosion-proof protected electrical equipment in scope of certification is extremely important considering the risk of explosi...

The presented article deals with a comparison of the structural and technical condition of sewerage systems operated by water companies and owners of water management infrastructures in the Czech Republic. The owners and operators of the sewerage systems in the Czech Republic include some municipalities with less than 2,000 PE who operate the sewerage themselves (the so-called "self-operators"). The Water Supply and Sewerage Act No. 274/2001 Sb. specifies an obligation for the operators to generate reserve funds f...

The climate change, recently commonly referred to global or anthropogenic warming, is extremely important areas of research in recent years. Measurements show that the Earth's mean temperature and mean sea level are rising, mainly due to increasing anthropogenic greenhouse gas emissions, such as carbon dioxide, methane, nitrous oxide, and fluorinated gases. Other important factors of climate change are stratospheric sulfur aerosols, whose ability to reflect solar radiation back to the space may cause cooling effec...

The structure of the tailings dump in the technological chain of a mining enterprise is functionally designed for storage of ore processing waste and clarification of technical water in the recycling water supply system of the mineral processing plant. In most cases, a tailings dump is an aggradation facility, the capacity of which is provided by the protective structures called tailings dams. The author analyses functional features of construction and operation of tailings in a technological chain of the mining e...

Smart farming usually includes elements of precision farming. In turn, in precision farming, differentiated application of chemicals is often used. It can be realised using two types of different techniques: by installing of vegetation state sensors on agricultural machinery or on the basis of task maps. Task maps are formed, as a rule, from third-party independent data sources, prior to the entry into the field of the machinery of differential impact on agricultural land. The aim of our work is the comparative an...

Although intensification of agricultural practices is traditionally viewed as one of the quickest way of achieving food independence, the increasing demand for energy and unsustainable development of agriculture are detrimental to natural habitats and decrease biological diversity. Organic farming offers a viable alternative and has the potential to facilitate the gradual expansion of environmentally friendly technologies. By carrying out the analysis of statistical data on the value of organic production obtained...

GNSS technology evolves at a fast pace and, along with it, the number of applications that are based on this technology increases. An important part of the applicability of GNSS technology is in the field of geodesy. In this article we propose to present a GNSS system that is built starting from the U-blox ZED-F9P receiver, integrated on a development board produced by SparkFun that is connected to the Raspberry Pi 4 Model B single-board computer. The Raspberry Pi computer and the development board made by SparkFu...

Reservoirs, which can have different floor plans, are among the most important civil engineering structures used in various branches of industry, in agriculture, in water management. They can be made from the different materials, but the most common are reinforced concrete or steel. All these structures are placed on the ground, the composition of which depends on the location of such a structure. In addition to these surface tanks there are also semi-recessed or fully recessed ones. Any of such tanks must be desi...

The specificity of the microelement environment in the population of individual geochemical provinces determines the features of homeostasis regulation processes. In conditions of excessive intake of strontium with drinking water, it is assumed pathological disorders of the parameters of osteometabolism with the involvement of immune regulation mechanisms. We examined 59 children of preschool age permanently residing in the territory of the strontium geochemical province and consuming drinking water with an excess...

The paper deals with an analysis of the settlement of a tank. The tank has a diameter of 18.6 m and a volume of 1760 m3. The subsoil consists of soft sandy clays and clays of low to medium plasticity. The tank has been founded on a slab of a thickness of 0.2 m. A consolidation layer of compacted gravel of a thickness of 1 m was created immediately below the foundation slab. The soft subsoil was improved using the stone columns. The stone columns were installed using vibro-replacement bottom feed technology. The st...

The article deals with the issues of a significant excess of the potential demographic load over the demographic capacity of the forests of the Cheboksary city district. Some ways of solving this problem are proposed.

The study aims to assess the diversity, density, and heterogeneity of seafloor litter, distributed in the Bulgarian Black Sea’s shelf area. The indicators for assessment follow the national monitoring program under Descriptor D10 of the Marine Strategy Framework Directive. The survey campaign took place between 19.10 – 14.11.2017. Marine debris was gathered by 53 trawl hauls distributed in four regions at depths between 30 and 100m. During the survey, all litter items were collected and classified into seven categ...

If the place hydrogeological conditions are uniform (invariable aquifer transmissivity, no impact of hydrogeological network) then the quarry depression cone and the pumping rate for the quarry draining can be obtained by using analytical methods. The dolomite aquifer at the Iecava district in Latvia included large impervious areas. Due to this fact, appliance of analytical methods cannot give the right depression cone. The local hydrogeological model (HM) was applied for obtaining the depression cone of the dolom...

The article analyzes the need of a suitable velocity field creation in the cross section profile of the fish pass, which would generate velocity variability for the occurring ichthyofauna with different swimming abilities. In this way, is not only the condition for the maximum vertical velocity fulfilled, but also parts of the profile with slow-flowing water in the bank zone are formed. There are also others recommendations as top width of the water level, doped discharge or recommended longitudinal slope of the f...

Processing of satellite data with high and very high spatial resolution enables to monitor selected social activities in open land, such as the occurrence and movement of people, cars, ships and other transport means. Such information is important for mass event control, urban and transport planning, intelligent transport systems, emergency, epidemiologic control, military application etc. The pilot area is located in Prague, close to the Old Town Square. Panchromatic and multispectral imagery from WorldView3 was ...

The determination and modelling of the territory is common scientific instrument for presentation of the state of the nature and human systems. The present research is based on the morphological and hydrological peculiarities in the river catchment. It observed of the Danube coastal zone in Bulgaria sector of the river. The differentiation and determination of the coastal area is key element in the process of the management of the territory and development of the regions. The general results of the research are re...

The article is devoted to the discussion of the possibilities of determining turbulent zones for predicting the dispersion of anthropogenic impurities in the lower air layer of the atmosphere. As you know, the atmosphere, being a dissipative system dissipating energy, is almost constantly in a state of instability. This unstable state of the atmosphere is based on deterministic chaos, which is a very important feature of the atmosphere as a dynamic, changeable environment. During the transition from the state of s...

Doubtless, the application of UAV is a new iteration of remote sensing technologies applied for obtaining information about the object of investigation. An opportunity of fast data acquisition for a large area of research provides to reduce the costs and expand the scope of application. One cannot deny that this approach is actual for geophysical methods of investigation, for aeromagnetic exploration particularly [[1]]. One should note here that process of adaptation of magnetometer sensors for UAV gets a new requ...

Mining is a very heavy industry. Every day miners take incredible risks to extract valuable ores and minerals from the earth's crust. In order to ensure the safe operation of the underground, adequate ventilation is required to ensure that the workplaces are permanently supplied with fresh air. By combining general ventilation with kilometers of secondary ventilation specific ventilation pipes, mining ventilation is a special area where errors can occur. Modeling and simulation of mining ventilation networks have ...

In the North Bohemian region in the Most Basin, brown coal quarries are gradually completed and subsequently closed at present time. The planned and implemented process of reclamation of the area affected by surface mining of brown coal consists in the creation of artificial lakes and afforestation of their surroundings. The Most Basin has a character of a graben, especially its central part. The area of the basin is closed between the Ore Mountains and the Bohemian Central Mountains. In a relation with this ortho...

The only one natural gas storage in Bulgaria - Underground Gas Storage Chiren requires modernization and development. A set of activities have been planned and implemented, covering research, technological and production activities. An overriding task and a top priority are to increase capacities - in volume and productivity of the storage. The aim of the research is to determine the necessary modern set of knowledge that will draw the attention of stakeholders to the possibility of modernization and increase the ...

The data obtained from the monitoring of the dam’s behavior, allow to make the decisions to start the current maintenance works at the best moments of time. They also make it possible to know from early stages possible atypical behavioral phenomena and to take measures accordingly before such phenomena become dangerous for the safety of the construction. One of the ways to monitor constructions is to perform geodetic measurements at different stages and to compare the coordinates obtained in a coordinate reference...

The article is devoted to the problem of cleaning and disposal of waste from mining enterprises of the Russian Federation, using the example of the production of alumina (aluminum oxide). The problem associated with the efficient use of industrial waste as sorbents for the purification of wastewater from mining enterprises is considered. A method is proposed that meets the requirements of the purification efficiency in terms of environmental and economic parameters. The substantiation and proof of the expediency o...

The subject of this study is the development of a web-based system for real time data tracking and applying GNSS corrections in GIS environment. This includes the data structures specification in a geospatial database, obtaining a methodology for system realization and discussing the results with an accent to the accuracy of the corrected GNSS positions. The system for tracking and applying GNSS corrections in GIS environment is entirely built by using free and open source software and has web-based interface. The...

This work is a logical conclusion and generalization of results of two-year researchoriented to design the integrated technology of processing of diopside-containing ores towin the scandium compounds and get the wide spectrum of large-capacity products. Thetraditional technology of sulfuric uncovering of mineral raw materials is applied withinthe scope of this work. The technology of scandium compounds extraction with the useof impregnators, which are based on the macroporous carbons soaked with diethylhexylphosph...

The Brown Coal Research Institute j.s.c. is currently conducting long-term research on the development of the Czech Republic’s climate and its impacts on mining activities. The research deals with the overall assessment of climate change in the Czech Republic and the main attention is paid to the area of the Most Basin, which is known as the largest Czech brown coal deposit. In addition, the basic air pollution characteristics in this area are monitored for a long time and trends in relation to climate change are ...