Browse

To address the global energy problem, energy from the solar source remains the most encouraging solution for buildings with a difficult-to-achieve goal such as achieving zero net energy consumption. In a solar thermal system, integrated solar collectors in buildings can convert the absorbed solar energy into thermal energy and can be better exploited in an area of the facade, while acting as an integral component of the building envelope, with good sun exposure. The aesthetic character and functionality of this te...

Upper Paleozoic carbonate-terrigenous deposits are widespread in the southwestern part of South Kazakhstan: in the Syr Darya, Aral, Chu-Sarysu and South Torgai sedimentary basins Karatau mountains, the Ugam ridge, as well as in the adjacent territories of Uzbekistan. Their capacity reaches 4000 m. At the end of the Middle Devonian, the western edge of the Kazakhstan continent sank, which led to transgression of the sea and the formation of a basin of forward deflection. On the outskirts of the latter, carbonate pl...

Taking into consideration limited financing of waste processing industry in Russia, refuse derived fuel production is becoming a promising course to decrease MSW landfilling at minimum cost, as the method allows safe energy recovery in existing cement kilns and precalciners. For its part, the cement industry pursues a lower level of fuel expenditure, which accounts for about 20% of total production cost. In this regard, fossil fuel substitution for fuel from waste is a mutually beneficial solution, linking the int...

Petromagnetic properties of soils were studied in the territory of Khlebnovsky oil field (Saratov region, Russian Federation). Magnetic susceptibility was measured at low (?lf) and high (?hf) frequencies in soils before and after heating up to 500°C including the frequency dependence of magnetic susceptibility (?fd) and the thermomagnetic coefficient (d?). It was observed that in the studied soils, ?lf varied from 3.05?10-7 m3/kg to 1.56?10-6 m3/kg with an average value of 5.54?10-7 m3/kg; ?hf - from 2.84?10-7 m3 ...

This paper presents the results of a study of a model site of the settlement Ksizovo-1 (XXIV-XXIII centuries BC) in the forest-steppe zone. The research object is located in the Lipetsk region on the floodplain terrace of the left bank of the river Snova, right tributary of the Don River. The aim of the study was to assess the variation of chemical and enzymatic characteristics of the cultural layers of the settlement in the profile and in the plan over the entire area of the excavation. During the excavations, so...

Symbiotic nitrogen fixation is the most environmentally friendly method for the accumulation of biologically bound nitrogen. Nitrogen fixation is carried out by bacteria, including from the class of ?-proteobacteria. Global climate changes lead to an increase of agricultural areas subjected to salinity. Current knowledge about the effect of high-salt stress on nitrogen-fixing symbiotic ?-proteobacteria has the appearance of a puzzle. The genetic mechanisms determining salt tolerance have been studied in the most d...

The expense of restoring of excavators cutting bodies is increasing these days in the Most Basin area, primarily the replacement of tooth because of abrasion expense. The main reason is the complicated geological situation of overburden rocks, first of all the occurrence of sands and hard structures in the overburden cuts rocks in the deep horizons of open pit mines. The main target of this article is the brief description of realised research. It is design of the optimum methodology of bucket tooth cutting body h...

The research topic is about to planning geopark in Racha-Lechkhumi Kvemo Svanei region, specifically in Racha region In Georgia, Caucasus. There is no one category of protected areas in Racha region. Geopark is a new category of protected areas which will be a novelty in Georgia and the whole of the Caucasus. In the case of planning the geopark, in the region would develop geotourism. In today's developed countries, Geotourism and geoparks as novel strategies for socio?economic development in rural areas. Geopark ...

The idea of sustainable land use constantly develops. The technical level of agricultural machinery is constantly improving. The latter is a part of modern technology in agriculture that has an impact on soil fertility and land quality. Soil quality depends on the integrated impact of topography, land use method, and the agricultural practices applied. The wind and water erosion and the other soil degradation processes caused by man's physical interference are due to the chaotic land use and improper dispositionin...

The rapid development and industrialization in recent years have posed a great challenge to the environment and air quality due to the increased anthropogenic emissions of particulate matter. Both PM2.5 and PM10 (particulates with aerodynamic diameters equal or less than 2.5 and 10 ?m, respectively) have become the forefront focus due to their adverse effect on human health and climate. Therefore, the assessment of chemical composition of PM2.5 and PM10 defining in general their toxicity and its correlation with m...

Floods are one of the most frequent natural disasters in Slovakia. The suggestions of flood protection measures were already taken by our ancestors many centuries ago. During the recent years, the attention of public and professionals, as a result of floods in Slovakia, is markedly focused on the possibilities for effective protection against the harmful effects of this negative natural phenomenon. One of the flood protection measures to protect towns and villages, or other important buildings, is a realization of...

An actual problematic question in geography didactic, directly related to the quality and effectiveness of training, is that of the methodological principles. They are defined as the regulatory basic rules and criteria adopted in the practice, the compliance of which determines the optimal organization and effective implementation of the geography training process. The system of principles is open and dynamic. The principles themselves are not independent and isolated from one another, but interact. Principles are...

The trend of improving the properties of the used materials also extends to the field of road construction. The research focuses on materials and technologies that immediately improve several properties of asphalt mixtures and at the same time reduce the energy requirements during the production, laying and compaction of asphalt mixtures. When comparing the energy consumption consumed in the production of one t of a mixture (HMA, WMA), it is possible to save at least 15 % of costs and CO2eq emissions [kg/t] up to ...

The ability of a moving charge to create a vortex magnetic field around itself is well known. This phenomenon formed the basis for the creation of electromagnets. The reverse process is electromagnetic induction, when a magnet moving with acceleration becomes a source of electric current in a closed conducting circuit. In this regard, ferromagnetic fluids are of some interest. Ferromagnetic fluid is an aggregatively stable colloidal system consisting of nanosized particles of a dispersed phase uniformly distribute...

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...

Today, the developing countries face a situation where there is an abundance of specialists with higher education, while the economy lacks qualified practice-oriented personnel. In general, there is a disproportion between the ever-increasing demand of specialists and supply on the labor market, and between the way of professional education and modern business. Society requires the commercialization of fundamental knowledge, the restructuring of the education system. Without losing its fundamental nature, educatio...

Dust emissions from industrial enterprises are often treated as total suspended particles (TSP); and they also quite often contain a wide range of chemical components. Among these components rather hazardous admixtures can be found, such as heavy metals, benzpyrene, polycyclic aromatic hydrocarbons, etc. Structure of emissions in terms of admixtures contained in them is determined by raw materials applied at a specific production, production technologies, structure of an end product, etc. Being suspended, chemical...

Various eco-friendly and cost-effective hydrocarbons clean-up methods based on natural sorbents were developed and tested, in order to prevent the massive environmental damage due to the petroleum spills. Among these sorbents, natural zeolitic tuffs are easily available and have numerous adsorptive properties that make them appropriate for the removal of petroleum substances. This study aims to preliminary investigate the sorption capacity of natural zeolites from a deposit located at Racos, Brasov County, Romania...

Flooding of peatlands occurs within the framework of the International Climate Initiative. The European Climate Initiative supports projects aimed at protecting the climate and ensuring a favorable living environment. Investment projects to restore wetlands should take into account environmental risks for the purpose of sustainable development of the region. Ryazan Meshchera is one of the main places for water reclamation activities. The main goal of flooding drained peatlands is to reduce their fire danger. To as...

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...

Georgia belongs to the number of small, open economies. The problems in its economy are therefore similar to those of developing countries. Our country's economic growth largely depends on the scale of attracting foreign direct investments. The foreign trade suffers permanent shortages; local agriculture is underdeveloped; mechanization and melioration and Chemicals supply level is low; Moreover, the agricultural sector suffers from a lack of funds. Despite the fact the product produced in this sector is natural, ...

The Brown Coal Research Institute j. s. c. is realising the long term research and survey of the mining area of the Most Basin. One of new important tasks is problem of climatic changes. The Most Coal Basin area is known for its largest Czech brown coal deposit. It is situated in the region of North Western Bohemia - Czech mining region. The main mining companies are the North Bohemian Mines, j.s.c. and the Seven Group j.s.c. The main mining localities are the Bilina open pit mine, the Libous open pit mine, the Vr...

The problem of supplying drinking water to population of Mangisstau and West-Kazakhstan regions is especially sensitive as the region is located in semidesert zone, water resources are limited. Development of the region natural resources, creation of sufficient conditions for economy intensive development requires large quantities of quality water. Worsening of sanitation-and-epidemiological situation, unsatisfactory technical state of water-supply systems, as well as gradual contamination and salinity of water so...

In the present article, based on the analysis and identification of the problems related to the socio-economic development of the border municipalities between the Republic of Bulgaria and the Republic of Serbia, an attempt is made to identify the main problems in forming policies to improve cross-border cooperation and achieving a balanced socio-economic development that will slow down the rate of population decline in the municipalities in question. The role of the local self-government bodies and the opportunit...

The physical and chemical characteristics of sludge from the chrome production in the Donskoy Ore Mining and Processing Plant (DOMPP) owned by TNK Kazchrome JSC have been studied. Researches have been performed to determine the gravity concentration ability of sludge tailings using fractional analysis, concentration tables. It was found that it is required to classify the initial sludge into size classes to obtain high technological parameters, and beneficiation with screw separators is ineffective. New data have ...

Large-scale changes can be observed in the Russian society in the XXI century. They laid the foundation to the Russian Federation integration into the global political, economic and cultural space, to the demarcation of a great number of borders as well as identified the indispensable necessity to uphold national interests of the state on a permanent basis. The processes of globalization, the development of international economic relations between the countries of the world community increased the need for competi...

The primary goal of the economic and innovative potential development lies in promoting cooperation between Russian universities along with academic organizations and manufacturing companies in order to expand knowledge-intensive production and fuel the supply of innovative products and services. Cooperation between universities and enterprises is organized around the joint development of sought-after technological solutions which are used as the basis for the creation of innovative products. By addressing applied...

Legislative changes within the circular economy package, initiated by the European Union and in the process of incorporation into the legislation of the Czech Republic, lead to a ban on landfill after 2024. More precisely, these changes lead to a significant reduction of landfill, with tons of landfilled waste. The aim of the changes is to reduce the landfilling of municipal waste to a maximum of 10% in 2035, to prohibit landfilling of recoverable waste (mixed municipal waste) and to increase the recycling of muni...

The massive depletion of natural resources, together with the inefficient use of end-of-life materials, results in the generation of vast amounts of waste. The waste material recycling poses a challenge for the present generation and alteration of current material streams needs to be reconsidered to mitigate the consequent environmental burdens. The construction industry produces several millions of tons of brick debris which remain landfilled or, at the best, are used as a substitute for natural aggregates. Howev...

A professional aviation meteorological service has been established in the territory of the Slovak Republic, the stations of which are unevenly distributed and do not cover the whole territory of Slovakia for information purposes. The addition of meteorological stations, whether mobile or installed at general aviation airports, would largely eliminate the occurrence of such "gray zones" without information coverage. Inexpensive meteorological stations installed at general aviation airports will help to solve the m...

During the oil field development process some of productive formation areas remain undrained which brings to decrease of total recovery factor. Conventional methods of reservoir development control including well testing, tracer studies as well as reservoir simulation have significant limitations when analyzing the inter-well space. To localize oil saturated undrained areas in the inter-well space, it is necessary to develop new approaches, and one of them may be the geochemical survey based on analysis of gas com...

This paper seeks to analyse the prospects of locally grown soya in substituting imported soybean meal used in pig feeding in Latvia. Soybean meal is a superior source of protein in compound feeds due to its high protein contents and amino acid composition, but the EU is vastly dependent on the import of plant proteins, with the imports of soya for feed dominating. Latvia also imports considerable quantities of soybean meal that is close to the total production of local protein plants. Owing to potential economic b...

The paper deals with the problem of avoiding karst and suffosion development upon projecting engineering structures in the areas of covered karst. It is shown that in case the depth of subsurface part of buildings with deep-seated foundations may be varied depending on the geological structure, the choice of foundation depth should be aimed at preventing possible karst and suffusion development. This approach is exemplified by the case of Bol?shoi Theater building reconstruction in the center of Moscow. A well-gro...

Cultural ecosystem services are defined as all non-material services and benefits provided by ecosystems that have a symbolic, cultural or intellectual importance [1]. According to the Common International Classification of Ecosystem Services (CICES), natural elements provide people with opportunities to gain cultural goods or benefits. In order to fulfil diverse needs and expectations of an urban community, it is necessary to have a wide range of different spaces that can satisfy various needs of various users - ...

This paper analyses the vibrations and noises transmitted to the seafaring staff on a cargo river ship on the Danube between Novi Sad and Sulina. The ship has 5 people as sailing personnel: 1 captain, 1 coxswain, 1 mechanic, 2 sailors. The trip was made in the fall of 2018. Parallel measurements were made on the main bridge as well as inside the engines room, in three situations: ship leaving the shore, running and mooring maneuver. We measured and calculated the main vibration parameters: Vibration magnitude r.m....

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...

One of the promising areas of rare-metal mineralisation containing rare-earth elements is the Karakamys ore district located in the west Balkhash region, within the limits of the Chu-Ili ore belt. The area is under-researched in regard to rare-earth mineralisation. Within the ore district, there are three dozen known rare-metal objects with associated rare-earth mineralisation (Karakamys, Shakshagaily and others). The majority of objects are concentrated in east near-contact zone of the Kaib granitoid massif, in m...

Waste is not only an environmental problem, but an economic loss because Romania recycles only a small part of municipal waste. The use of atmospheric pollutant dispersion models has become necessary due to cost-efficiency reasons, given the limitation of fixed measuring points/stations for these pollutants. The paper studies the dispersion of PM10 dust particle pollution in the landfill?s area of influence, depending on wind direction and speed. Simulations are based on measurements of suspended particles, carrie...

The paper considers the causes of freshwater scarcity and its worsening, and gives recommendations for the prevention, remediation and mitigation of climate change negative effects on groundwater. Wet technology sectors have been developed rapidly in the global market. Currently, there is already a clear increase in freshwater scarcity. According to the UN, over 1.2 billion people live under constant growth of freshwater scarcity, and FAO predicts that the number of those living in water scarcity conditions will e...

In Romania, the production of coal and lignite depends on the national demand for primary energy resources in the electricity production sector and on the available resources / reserves. Although it still plays an important role in the mix of electricity production and the safety of the National Energy System, especially in the winter, coal-fired electricity production is decreasing even this season. The considerations for which this situation was reached are: the programs for extractive industry reorganization an...

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...

Regression analysis is widely used in situations where it is necessary to determine the dependence of a certain quantitative (continuous) variable on one or more other quantitative (continuous) variables, so-called regressors. It is necessary to determine in advance which variable is independent (explanatory) and which is dependent (explained). The aim of the regression analysis is to describe this dependence using a suitable mathematical-statistical model. The presented paper aims to find the possibilities of usi...

A responsible approach both to the environment and the principles of sustainable development in recent years not only concerns the corporate ecology itself, but it also overlaps into the field of design and construction of buildings. The concept of sustainable construction of buildings, which is based on three main pillars of sustainability, including the quality of the environment, social and cultural aspects as well as economic efficiency, is closely related to it. The main tasks of sustainable construction incl...

Soil unit weight is one of the most important parameter used in all geotechnical calculus related to design process of any type of constructions. Determination of this gravimetric -volumetric data can be done through laboratory tests in firm soils, or indirectly as itderive from some in situ investigations such as Cone Penetrations Test (CPT) or as severalgeophysical investigations such as Down hole, Cross hole, Logging P-S velocities, insoils which can?t support undisturbed samples (very wet organic soils or sand...

Renewable resources? share in meeting the power balance in Romania grew constantly during the past decade. Therefore, the contribution of polluting energy sources (such as coal or oil) has progressively reduced. Moreover, to enable environmental impact mitigation for the still operating classical plants, proper desulphurization equipment were installed. It is remarked that the shares corresponding to hydro-energy and nuclear energy show an almost constant trend. Sensible investments were made in the energy sector,...

A significant percentage of nowadays furniture is made of melamine faced chipboard. Even if the surface has a high resistance to aggressive factors, at the time of damage the commonly accepted solution is to replace the board or the entire affected assembly, even if the furniture is relatively new. Surface repair, in addition to being difficult, does not serve the interests of furniture or raw material manufacturers. The study verifies the possibility of repairing the surface of different melamine chipboard boards...

To date, the main oil and gas deposits in the Cambrian and Precambrian section of the south of the Siberian platform are confined to the terrigenous part of the Precambrian sedimentary cover, while in a much more powerful halogen-carbonate (HC) complex of the Vendian-Cambrian and the Lower Cambrian, the little commercial hydrocarbon accumulations were found. Therefore, the prospect of the largest reserve for increasing oil and gas deposits is associated with the carbonate complex. Along with the urgency of identif...

This article is devoted to the study and mathematical description of the mechanisms of oil pollution of objects of agro-industrial complex. The significance of the problem of ensuring the environmental safety of these objects through early detection, localization and prediction of the dynamics of the spread of oil pollution is shown. The basic properties of oil and oil products, as well as the features of their location and migration in the geological environment are considered. It was established that the migrati...

The Brown Coal Research Institute started the solving of the research project based on the optimisation of the shape and material of ground and mining machines in 2018. This research is necessary for increasing of efficiency of mining process in conditions of the Most Basin. The very important part of the research was the geological characteristic of the Most Basin main mining localities. Evaluation of the geological situation of the Bilina, Vrsany and Libous mines (mining of the overburden rocks in the CSA mine f...

The report presents the results of studies of the characteristics of the deformation signal during the preparation of regional earthquakes according to laser deformation measurements in the adit of the Talaya seismic station (Baikal region). Studies have shown a number of features during the deformation process on the eve of regional earthquakes. The deformation data recorded on the seismic station (? = 51°40`48``N, ? = 103°38`24``E) during the period from 1994 to 2015 were used as experimental material. During th...