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The construction sector is one of the major consumers of non-renewable energy and natural resources, but also an important factor in increasing global warming and climate change by producing greenhouse gases. In Europe, around 30% of CO2 emissions and 36% of total greenhouse gases are a direct or indirect consequence of the construction sector. At EU level it is estimated that 40% of energy consumption is due to public / private sector buildings. All EU policies regarding climate, energy efficiency and the use of ...

On the path of economic development, sustainable waste management is a difficult step. Especially in low-income countries where management systems are imperfect managed, with low infrastructure and public awareness, lead the country to critical out comes. Landfills in Georgia, with few exceptions, do not meet international standards. In addition, spontaneous, illegal landfills are being created in the villages. Residents dump their waste into the water, on the river banks, near agricultural lands, in a ravine. Unc...

This paper aims to assess the trend of river morphological evolution and changes in the Danube riverbed sector, i.e., Ceatal Izmail, using GIS techniques. The sector is located on the Danube at Mile 43, where the river branches into Chilia and Tulcea tributaries. Therefore, three monitoring topo-bathymetric profiles (2018 and 2019) were performed on Danube (Mm 43), Chilia (Km 114) and Tulcea (Mm 42.5), under circumstances of high and low water levels. On the Danube (Mm 43), an asymmetry of the valley (right bank) ...

The interaction between groundwater and surface water is a complex process that plays an important role in the functioning of the ecosystems, the understanding of this interaction being significant for the management and protection of water resources. Moreover, this interaction can affect the water quality due to the contaminants transfer between river and aquifer. The water movement within this particular environment can be influenced by geology, topography, land use, climate, etc., being an essential component o...

The Marine Strategy Framework Directive (MSFD) requires that biodiversity, structure and function of benthic ecosystems are safeguarded against adverse effects from various human activities. Bottom-trawl fisheries have been identified as a major cause of sea-floor abrasion and it is legally required to evaluate the pressure and its impact. The present study provides a pilot assessment of the physical disturbance on the seabed by mobile bottom-contacting gears and links the pressure intensity to benthic habitats st...

Improving and protecting water quality, for human needs, and for the sustainability of aquatic ecosystems, has become a global priority for this century, involving continuous monitoring of inland water resources, combining in situ measurements with satellite remote sensing, especially from the surface of the water. This could be possible through the Sentinel missions, respectively S2 and S3 of the European Space Agency, equipped with a multispectral instrument on board, which makes it possible to study inland wate...

Particulate air pollution from transport in cities, especially from cars, involves a variety of harmful compounds, including fine iron and heavy metals, which can persist in the air for long periods of time, increasing harmful effects on human health and creating a risk of environmental pollution. In Europe, more and more attention is being given to the chemical composition of dust not only their concentration in cities. The aim of the study was to determine which parts of the Jelgava city have the highest polluti...

Lengthening periods between precipitation have been recorded and we can see a change in the distribution of rain over time. An increased number of these phenomena has also been confirmed by the IPCC. Due to this change in the redistribution of rainwater and the impact of high urbanization, sewerage systems are affected. The problem of a high number of impermeable areas is also associated with a high degree of urbanization. During torrential rains in combination with impermeable surfaces, the time of outflow into t...

A bioeconomy refers to economic activities using renewable biological resources to produce energy and consumer goods. The role of the bioeconomy in the world tends to increase, as countries need to find environmentally friendly solutions under changing climate conditions. For this reason, bioeconomy strategies are developed in many countries to purposefully contribute to their development. Among the Baltic States, Latvia was the first one to design and adopt its national bioeconomy strategy (Latvian Bioeconomy Str...

The article is devoted to the assessment of the impact of the state of drinking water supply systems on the health of the population of the Siberian Federal District and the life expectancy of the population. Water is a vital strategic resource, and the issue of providing the population with a sufficient amount of sanitary water is one of the urgent problems of mankind. Taking into account the importance of efficient water use, the relationship between water resources and the environment, the UN General Assembly p...

The hydrocarbon reservoirs in mature regions are extremely complex, each reservoir having its own identity. The value of recoverable geological reserves depends on the data of geological and geophysical studies: determination of heterogeneity and reservoir compartmentalization. Residual oil reserves are concentrated in undeveloped clayey, poorly permeable intervals along the section, the development of which is impossible without research and development. One of such studies is the methods of lineament analysis of...

The present study focuses on the assessment of station corrections for eleven seismic stations from the national network of National Operative Telemetric System for Seismological Information (NOTSSI). Station corrections are obtained by calculating the ratio of the spectrum of the horizontal components of the signal to the spectrum of the vertical component (H / V). Records of S-waves from 20 local and regional earthquakes are analyzed. The values of A0 - site-effect and f0 - resonant frequency were obtained. Acco...

Buildings, including public sector buildings, are the largest consumers of energy re-sources. The aim of the work was to assess the energy saving potential of state consum-ers of the municipal territory in order to determine the efficiency of energy consumption in individual buildings and to determine the directions of the most profitable investment to improve energy efficiency. An analysis of the specific consumption of 23 buildings managed by the municipality of Yakovlevsky district of the Belgorod region (Russi...

The present study is aimed to assess the status of Black Sea fish species harvested by the Bulgarian fishing fleet, according to the three criteria of Descriptor D3 under the Marine Strategy Framework Directive (MSFD). Achieving healthy fish populations depends on the adverse impact on species as a result of fishing activity. Descriptor D3 of MSFD addresses the commercial fish stocks status by applying indicators assessing the exploited fish sustainability, reproductive capacity and recruitment, and the age and si...

The study of seismicity in the Black Sea region is of particular interest for assessing the vulnerability of the surrounding coastal zones to strong earthquakes and their consequences. The seismicity pattern in the area is determined by the geodynamic processes along the boundaries of the Eurasian, Anatolian and Arabian tectonic plates. The paper presents an approach to assessing the seismic activity of the Black Sea and the surrounding region covering historical and recent seismicity. The historical events since ...

Snow cover is an important factor in mountainous regions regarding water resources, vegetation and economic issues for the ski and spa resorts. Snow is also an indicator of the fluctuating climate, resulting from the change in the regime of winter precipitation and air temperature. This study is focused on the changes in the regime of the snow cover in the Vitosha mountain. The monthly values of number of days with snow cover, seasonal maximums and monthly averages of the snow cover from 5 meteorological stations ...

The article is about three hydrological river routing models (RRM) implemented in Bulgaria, coupled to a land surface model (LSM), mainly for flood forecasting purpose. For the evaluation of the three RRMs the authors use a river basin of Mediterranean climate - the Varbitsa River with catchment area of 1200 km2. The river is prone to dangerous flash floods because of their fast propagation. LSM SURFEX (Surface Externalisee) but formally the integrated part ISBA (Interface Soil Biosphere Atmosphere) is used to com...

Changes in market demand inevitably lead to changes in the assortment policy of oil companies. It is necessary to change the production capacity at the enterprise and the sales policy, demand profitable types of products that will be in demand among consumers. The competitive strategy of oil refining companies is currently largely determined by the drop in total global demand for dark oil products and the high rates of development of petrochemicals. The focus of the paper is on analysis and development of assortme...

The southern part of the Bulgarian Black Sea coast is characterized by numerous nature protected areas with high biodiversity, picturesque seashore landscapes and small villages that attract many tourists in summer. Despite the fact that the region is distant to big emission sources of anthropogenic pollution, air pollution and deposition can be significant for specific pollutants and seasons [1-2]. The main goal is to discuss recent data for dry depositions of oxidized nitrogen, reduced nitrogen and sulphur for t...

The paper presents a calculation of an annual balance between the water inflow and discharge in the Cheboksary hydrosystem reservoir. The calculation is implemented in MathCad. The calculation is based on the principle of identifying the main areas of water use and water consumption, including hydroenegetics, water transport, drinking and industrial water supply, fishery, and recreation. Characteristics of water inflow and discharge by the Cheboksary hydrosystem are calculated. A positive annual balance of the wat...

The main cause of Albanian seismicity is the collision of Adria microplate with the Albanian orogeny. Albanian territory is characterized with high level of seismic hazard in the Europe. It is very important to emphasized seismic zone of Durres that generated a strong earthquake M6.4 on 26 November 2019. During the 2020 year, seismic activity at the Albania territory and its surroundings was characterized by a normal seismic activity. Earthquakes foci are concentrated mostly along the five active fault zones: Fier...

The Marine Strategy Framework Directive (MSFD) requires that biodiversity, structure and function of the marine ecosystems are safeguarded and benthic habitats, in particular, are not adversely affected by anthropogenic pressures. Evaluating the spatial and temporal variation of the benthic broad habitat types’ status in a six-year management cycle is mandatory under MSFD. The present study aims at assessing the benthic habitats status in the Bulgarian Black Sea shelf area in 2019. Benthic macrofauna diversity and...

Environmental Industrial Policy (EIP) as an integral part of the industrial policy aimed at the resource efficiency enhancement at two levels – the level of industrial installation and the regional level. The article shows the correlation between Sustainable Development Goals, Environmental Industrial Policy and Circular Economy goals. Authors focus their analysis on the construction materials industry as one of the resource intensive sectors regulated both by the legislation based on Best Available Techniques (BA...

Nowadays, along with creating materials with enhanced mechanical characteristics, it became important in the light of ecological problems, to design eco-friendly materials capable to disappear with time after fulfilling functions, in other words to develop biodegradable mechanically strong materials. The chemistry and technology of biodegradable polymers is one of the most important and rapidly developing fields of modern polymer science. A lot of biodegradibel polymers (BPs) were created mostly for medical applic...

Global trend to renewable and green energy application instead of fossil fuel results in grows of bioethanol production and its application in transport and industry. Typically, bioethanol can be used as motor fuel purely and in blends with hydrocarbons, however bioethanol fuel containing less energy compared to traditional gasoline. A possible solution to this disadvantage can be catalytic transformation of bioethanol into hydrocarbons. Bioethanol can be transformed into hydrocarbons over different zeolites inclu...

To prove adverse impacts exerted by drinking water and to assess regularities in occurrence of health disorders caused by contamination burden on the body, experts from the Center performed complex chemical-analytical and medical-biological examinations of children who lived on an exposed territory and consumed drinking water with chemical contents exceeding hygienic standards: N-nitrosodimethylamine, by 1.6 times; chloroform, by 5 times; dichlorobrommethane, by 26 times; and children who lived on a reference terr...

Our planet experienced many intervals of climate deterioration due to terrestrial causes, such as intensified volcanism and a very active tectonic regime or extraterrestrial causes. The later includes major meteorite impacts and change in the exosphere, mostly linked to the modification of sunlight amount leading to glaciations. The most sensitive organisms to climate changes are the marine planktonic ones, especially the coccoliths and dinoflagellates. This paper describes modification in the marine planktonic wo...

Bird studies in urban parks support our better understanding to impacts of urbanization on natural forest habitats. This study is based on field census of nesting birds in urban parks of Olomouc heritage city (Czech Republic). Bird community in urban parks was compared with previous author?s bird study in hardwood floodplain forest near the Olomouc city. For characteristics of bird communities, Jaccard index, standard diversity index and equitability index were used. Comparison indicated high similarity of bird di...

The paper solves the problem of creating a device for electrical measurements for the purpose of geological research. There are a large number of data acquisition and processing systems, analog-to-digital converters (ADC) and other serial processing technical means for measuring and storing analog electrical data with their preliminary conversion into digital readings. This is done for the purpose of subsequent processing of these signals, which allows calculating some characteristics, which are then used to calcu...

This article offers an innovative method for deriving curricula for tomorrow’s workforce in the geospatial sector, considering the market requirements through modelling business processes, identifying and analyzing occupational profiles. The idea behind this approach reveals business processes models described by workflows of tasks that workforce needs to master in their daily work. In addition, business processes show who is involved in projects and needs to communicate with one another, and how the information i...

Riparian forests are important ecosystems providing a spectrum of ecosystem services such as erosion control, nutrient modification and improvement of water quality in adjacent streams. In many countries management of riparian forests are restricted to protect aquatic biota as vegetation, especially woody plants provide nutrient uptake from soil preventing stream water over-enrichment. However not all tree and ground cover vegetation species carry the same positive effect on stream quality. Aim of our study was to...

Walking is the oldest way of transporting a person from place to place. Nevertheless, in the last decades, insufficient emphasis has been placed on it when planning the development and renewal of settlements in the Czech Republic. In recent decades, public space has been purposefully adapted to car traffic, which degrades it aesthetically, functionally, and air quality. This approach has been gradually changing in recent years. Large cities are once again turning to walk as a basic way of transporting people and a...

One of the circular economy’s principals is to «keep products and materials in use». Geopolymerization technology is promising enough to support this principle as it exploits wastes and by-products as alternative raw materials streams. However, the challenge that must be overcome to commercialize geopolymers is the substitution of the caustic alkaline solution that activates the aluminosilicate raw material. The introduction of solid activators in the process has given great results. This paper deals with the synt...

The production of tiling and building ceramics is based mainly on the traditional system clay-silica-feldspar. However, in recent decades it has been demonstrated that some of these raw materials can be successfully replaced by various industrial wastes. Because of the high feldspars price a significant part of these studies was based on the usage of different alternative “amorphous” fluxes (as glass culets, TV cathode ray tubes, basaltic tuffs and others). Unfortunately, the addition of similar materials in amoun...

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...

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 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...