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One of problems in terrain surveys in geology and archeology is sample obtaining. Among all possible complications are limits in sample volumes and masses, including possible toxicity or radioactivity and also the legal status of the samples. In his contribution, these problems are addressed by application of microsampling by surface exfoliation of geological objects and archaeologic artifacts using various tapes and subsequent analyses of the resulting samples. Among method used were both optical and electron mic...

Recently, there have been cases of lower durability related to concrete pavements in the transport infrastructure in the Czech Republic. One of the main causes seems to be the increased amount of alkalis in the concrete, which may not have come only from individual components or through winter maintenance. This paper describes a research activity which deals with possibilities of alkali attack from the surrounding environment. The pilot testing provides valuable information on alkalis concentrations in real condit...

The Istria Basin, part of Western Black Sea (WBS) represents a major tectonic unit of the Romanian Black Sea shelf, with prolific hydrocarbon bearing structures. A significant amount of exploration and development wells were drilled on this basin’s northern edge. Core and cuttings data from 12 boreholes provide important details on this basin and the WBS stratigraphy, especially for the two of the main hydrocarbons bearing deposits Upper Cretaceous and, respectively, Eocene, on which we have achieved an age interp...

The way people perceive risks determines their reactions to and engagement in public campaigns, new development projects or clean-up and remediation initiatives. Since local communities represent important stakeholders in the sustainable development of a region, their beliefs and social representations of risk are important indicators that need a careful analysis. Mining communities are of particular interest to social and environmental scientists given the long-term pollution resulting from such activities and th...

Taking into account the sedimentation features since the last 5 decades, considerable anthropic modifications on the Danube channel are present, as the debris composition varies concerning the proportion of terrigenous minerals, lithoclasts, bioclasts and organic matter. Since the 7th decade of the last century, marked by the construction of most hydrological power plants on the Danube, Olt, Jiu, Cerna and other major rivers, a significant change of the sedimentary volume brought downstream by the Danube is assume...

An earthquake catalogue covering the seismicity on the territory of Bulgaria and adjacent lands for the period 2000-2020 is presented in the current study. In this catalogue are included events with magnitude equal to or larger than Mw ? 2.5. As a country, Bulgaria belongs to the Alpo-Hymalian seismic belt, it is also not absent of strong earthquakes. Bulgaria is an earthquake prone country taking in account that on its territory are recorded some of the strongest earthquakes from the beginning of the last century...

Unfortunately, soil is a non-renewable resource that fulfills several vital functions such as food/biomass production, storage, filtration and transformation of mineral or biological substances, source of biodiversity and habitats, etc. Due to the development of industrial activities outside the localities, in many areas the soil is degraded. Among these degradation processes can be mentioned degradation of organic matter, contamination, soli salting, and erosion. This paper is dedicated to the presentation of the...

The efficient use and recycling of industrial water is a major challenge to the sustainability of the planet. Blast furnace slag is a by-product of metallurgical operations during the production of cast iron. The granulated slag is obtained by cooling in water. In this research we studied the cooling water of granulated slag generated from the process of making cast iron through the blast furnace route. The elemental analysis of granulated slag and of granulated slag stored in water was determined by X-Ray Fluores...

Waste steel slag is a major source of environmental pollution within the metallurgical industries. Metallurgical slags like blast furnace slag, ferroalloy slag, converter slag and copper slag are produced as by-products in metallurgical processes. During the production of steel, one ton of slag waste is generated per every three tons of stainless steel produced. In order to reuse waste steel slag, discharged at high temperature range (1250-1650 °C) and cooled in water, which is named as granulated slag, three diff...

Small and medium-sized enterprises (SMEs) of the Russian steel industry perform an important function of innovative development. These enterprises produce unique products in small batches for domestic engineering and implement import substitution projects (e.g., piece products of cast-iron casting for enterprises producing agricultural machinery). At the same time foundry production makes one of the most unfavorable influence on ecology and occupational health. Waste of foundry production and emissions into the at...

Using an integrated approach to evaluate the quality of the reservoir and the potential of production is getting more and more important in petroleum geology. This integrated approach was used to analyse the quality of an old Miocene reservoir in the Moesian Platform, Romania. While this paper goes through all the main components of an integrated study (seismic, petrophysics, reservoir engineering), the main focus was on well data. This research focused on modelling the structure using mainly well data. The reserv...

Due to the ever-growing importance of resource conservation and sustainable lifestyle, people are searching for new, alternative solutions that will enable a more sustainable use of resources. Because energy production is one of the most pollution-intensive industries, a major factor is renewable energy, which reduces the amount of industry pollution and facilitates sustainable use of resources. One of the sustainable energy resources are Salix and the wood chips produced from them, which are used in energy produc...

This article describes gas hydrates formation, with methane and carbon dioxide as guest compounds, in a small-scale experimental apparatus, appositely designed to reproduce marine offshore reservoirs. The sediment consisted of pure quartz porous sand impregnated with FeSi3 particles, which are produced via gas-atomization and are usually destined to applications in additive manufacturing. Experimental results were compared with the theoretical equilibrium conditions for both types of hydrates. It was established t...

Due to the general development of society, advanced technologies, constantly growing information and globalization, the complexity and dynamics of organizations are also increasing. In times of economic instability, organizations are clearly experiencing a chaotic period in which they try to understand what is going on, try to adapt, learn new technologies, improve, and transform communication channels and train people to share information. Such changes usually also affect the operation of the organization, often ...

Usage of new complex applications and systems will force most companies to rethink time and human resources, motivate them to automate processes where human intervention can be done or is needed at a minimum. However, safety in the technical world is a serious concern, companies that make any kind of decision cannot skip this aspect. The pace at which new technologies and methods are being adapted is currently based on very rapid external pressures. The current situation in the world is undoubtedly a huge challeng...

The work is devoted to the assessment of the natural protection of groundwater in the Ternopil oblast (Ukraine). The evaluation is based on the parametric method of V. M. Holdberh. The characteristics of the geological structure of the aeration zone and aquifers are given. The areas of the greatest influence of karst on the protection of aquifers are determined. The stratigraphic confinedness of water intakes and large deposits of groundwater is described for further analysis of their protection. Since more than 5...

Vulnerability, land use and sustainability are some of the main elements of major concern in the last decades that can be translated in practice through efficient development and planning. The role land use plays is recognized worldwide due to the rapid and continuous urban growth and development, which determine the occurrence of new powerful forces leading to social, demographical, environmental, technological and governmental changes. The large number of disasters in recent years demonstrated that the most effe...

Among the global threats facing humanity in the 21 century, the danger of climate change on Earth occupies a prominent place. Global climate change caused by anthropogenic factors can lead to natural disasters and, as a result, have a negative impact on human life and health. Given the importance of this problem, international organizations, governments, politicians at all levels, NGOs and society as a whole are involved in solving it. The purpose of the study is to determine the forms, activities and results of t...

Many operations with flammable liquids produce flammable atmospheres by evaporation of the liquid being handled. In some circumstances, the flammable atmosphere is not due to the liquid being handled but due to residues of volatile liquid or vapor from earlier operations with the same equipment as is often the case with diesel fuel handling. This paper highlights some aspects regarding the danger of fires and explosions in the transport, storage and distribution of diesel fuel starting from the investigation of th...

Natural processes and human influences can cause several environmental issues upon urban and rural aquatic systems, especially in deltaic environs. This study was aimed to assess the vertical variation in the physical-chemical and lithological characteristics of core sediments. 14 undisturbed short sediment cores were collected from soft lacustrine sediments in various shallow lakes situated in the Matita-Merhei interdistributary depression, Danube Delta, Romania. Sediment samples were measured for temperature, pH...

The European Plate Observing System (EPOS), is a multidisciplinary, distributed research infrastructure that facilitates the integrated use of data, data products, and facilities from the solid Earth science community in Europe. The EPOS pan-European dimension is corroborated by 25 countries, 5 international organizations, 149 national research organizations and 256 research infrastructures involved in the data and service provision. The legal and governance framework designed during the Preparatory Phase and deve...

The purpose of this study is a spatial-dynamic and structural hygienic assessment of the impact of the activities of thermal power facilities on the quality of atmospheric air and the formation of potential risks of harm to the health of the population in a large industrial center with a population of more than 350 thousand people and a total area of more than 500 square kilometers. At present, heat and power facilities belong to the main industries and form significant potential risks of harm to public health in ...

The increase in the price for non-renewable energy resources has led to the finding of cheap alternative fuel solutions that can meet the growing demand for energy. The objective for the researchers is to use renewable energy as an alternative energy source to produce green energy. Over time, researchers have developed several types of shapes for the wind turbine: small, which have a generation capacity of 50-60 KW of power; On average, they have a capacity between 50-1500 KW and large, capable with a capacity of ...

The Volinian Adancata sandstone (Lower Sarmatian) is exploited from the northwestern part of the Moldovian Platform, which represents the continuation of the great East-European Platform and which lies in front of the Eastern Carpathians (in Eastern Romania). Adancata sandstone is a slightly micaceous carbonate sandstone that has been exploited since the Middle Ages to the present, with some temporal syncopes after the Second World War. The current exploitation of the sandstone levels is made in two quarries locat...

The constant need for techniques that contribute to the environmental preservation has led researchers worldwide to intensify their studies regarding different routes that enable the environmental protection. Azo - dyes can be found in aquatic matrices and conventional procedures applied in effluent treatment plants showed not so good results in respect to degrading this type of dyes that are usually persistent and refractory. Also, textile dyes release important amounts of toxic and resistant color effluents that...

The main purpose of this paper is to provide new geological information and interpretation of the well data from the Istria Basin, Western Black Sea. Therefore, we present a reconsideration of the microfaunas (mainly foraminifers) and calcareous nannofossils described from several wells drilled on the Lebada East structure belonging to the Istria Basin, by using core reports. Thus, we have been able to compile integrated information regarding the lithology and biostratigraphy of the wells. We have focused on the s...

The territory of Bulgaria represents a typical example of high seismic risk area in the eastern part of the Balkan Peninsula. The spatial distribution of seismicity in Bulgaria is uneven, which gives reason to group earthquakes into geographically defined zones - seismogenic zones. In the present study the Sofia seismogenic zone will be examined. Sofia seismogenic zone is located in southwestern Bulgaria - the area with pronounces tectonic activity and proved crustal movement. The capital of Bulgaria - the city of...

The purpose of this paper is to describe the geological and geophysical features of the Badenian deposits in the Moldavian Petroleum System, especially those of evaporitic main seal formations. The Moldavian Platform, Romanian sector of the East European Platform, is the oldest platform unit in Romania. Its Western limit sinks beneath the Pericarpathian area following the NNW-SSE Paltinoasa Fault alignment. The Southern Moldavian Platform is separated from the Schythian Platform by a WNW-ESE fault [3]. We used wel...

The paper aims to address the importance of inspection and maintenance of electrical equipment used in liquefied petroleum gas car filling stations. In order to maintain in operation the electrical equipment in environments with potentially explosive atmospheres under harsh conditions, the personnel involved in inspection and maintenance activities must be trained in such a way as to know the operation of these electrical equipment with different types of protection and how to perform their maintenance. Inspection...

The Geological Survey of Norway, in 2019, collected helicopter borne geophysical data in parts of Loppa and Kv?nangen municipalities, in Northern Norway. The objective of the airborne survey was to obtain a dense high-resolution magnetic, electromagnetic and radiometric data set over the surveyed area. These data are required for the enhancement of the general understanding of the regional geology of the area. Adjoining areas covered by previous airborne surveys in 2014 were merged with the current data. The studi...

The article is devoted to assessing the efficiency of using an electromobile and a car with a fuel cell. Two existing models of the first mass-produced electromobiles were selected for comparison. The relevance of this work is due to the growing requirements for environmental cleanliness of energy carriers used for automobile transport. Obviously, over the coming decades, the main competitors for the mass replacement of traditional motor fuels (gasoline and diesel fuel) will be electricity and hydrogen. This artic...

In the Northeastern part of Kosovo is the Trepca Mine which produces very beautiful crystals. These crystals with mineralogical composition are in favor of being visited by visitors and tourists from all over the globe. Their value is great and it is important to visit. Near the Trepca mine is the Museum of Crystals and Minerals of Kosovo. "Trepca", where crystals and minerals extracted from the underground of Kosovo are stored, protected and exhibited, not only in the Municipality of Mitrovica, which have a high ...

Environmental pollution due to increasing waste flows is on top of the global agenda. Many developing countries including Russia address this issue by investing in waste treatment facilities. They give little regard to circular economy principles which are gaining prominence in advanced countries. Lack of detailed information on waste flows limits waste management system analysis best practices applicability in these countries. We developed a framework for waste generation analysis during the life cycle based on d...

Cogeneration equipment is generally classified according to the power source for the production of energy and the size of the electrical power. Low power cogeneration refers to those with powers up to 1 MWe, and those of medium power reach 25 ? 40 MWe. The overall efficiency of primary fuel use, under favorable conditions, can exceed 90%. Currently there are different solutions for low / medium power cogeneration, whose technologies are well developed. For a properly designed low power cogeneration the investment ...

The paper provides comparative characteristics geodynamic situations and of related intrusive series. Discussed are cases of alternation of such granitoids in time, their connection in space and relation to collisional processes. I-granites form extended gabbro-diorite-granodiorite-sodium and potassium-sodium granite series with gradual increase of the role of silica and potassium in the final products. Differences in the petrochemical composition of pre- and late collision of I-granites are conditioned by the sub...

Dianthus superbus L. is mentioned as seriously threatened species in several European countries. In Latvia, D. superbus is endangered species on the edge of extinction and is included in the 1th category of threat in Red Data Book of Latvia. As the population has declined to critical levels, special studies and related protection measures are necessary. Therefore, investigation was done to reveal the current state and surviving potential of D. superbus in Latvia. Numerous expeditions were conducted to check 18 pre...

The evaluation of explosion-proof electrical equipment for certification is particularly important given the risk of explosion and must be minimized. This in order to ensure the safety of life, health of workers, to prevent damage to goods and the environment when they meet the essential security requirements at European level. Directive 2014/34 / EU states that equipment used in explosive atmospheres must be designed to operate without endangering the environment for which it is intended. This paper deals with th...

Most of the equipment operating in potentially explosive atmospheres in oil and gas industry is represented by electric motors, which in most situations act on various other elements (e.g. pumps, valves, fans etc.). Evaluation of explosion-proof protected electrical equipment in scope of certification is extremely important considering the risk of explosion that has to be minimized in order to ensure life safety and health of workers and to prevent damaging of property and the environment, as well as free movement...

The onshore Thermaikos basin is the northwestern extension of the offshore Thermaikos basin, located at the area west of Thessaloniki, in northern Greece. It consists a sedimentary basin, where thick sediments dating from Paleogene to Quaternary are overlaying the older ophiolite and deep-sea Mesozoic formations of Axios geotectonic zone. Thermaikos basin, both offshore and onshore, has been considered as a hydrocarbon promising area, with a proven gas field in offshore Epanomi area in Thessaloniki gulf, hence a n...

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

Annually more than 300,000 thousand tons of waste are generated in Ukraine, including about 600 thousand tons of hazardous waste. These include used fluorescent lamps, motor oils, batteries, unsuitable and expired pesticides, pesticide packaging, medical waste and others. According to the State Statistics Service of Ukraine, as of the end of 2018, the total amount of waste accumulated during operation in designated areas or facilities was 12972428.5 thousand tones. Whereas during 2018 the amount of generated waste...

The modern approach to the spatial organization of territorial nature protection is designed to ensure the achievement of a system-ecological balance within the framework of the ecological foundations of optimizing nature management and the concept of sustainable ecological and economic development. Networks of specially protected natural areas (SPNA) at the regional level perform the task of preserving mainly zonal ecosystems, combining the capabilities of various categories of protected territories. Volgograd re...

We analyze a series of data in the ultra-low frequency (ULF) range of geomagnetic variations, which are collected from search coil instrument and acquisition system at Panagyuriste, Geomagnetic Observatory (PAG), Bulgaria, a part of South European Geomagnetic Array (SEGMA, http://sole-terra.aquila.infn.it/it/), and data for seismic noise collected at three Bulgarian seismic stations (VTS, RZN and KDZ part of National Operative Telemetric System for Seismological Information) and three Turkish seismic stations (GOM...

The Bistrita River was the first river harnessed for hydropower purposes in Romania, starting with 1960. Currently, on this river, 29 hydropower plants with different capacities are functioning, producing about 10% of the entire Romanian electric energy from hydro. Many of them were realized in series, in cascade. In the present paper, the area of Pangarati, Vaduri, Batca Doamnei, and Reconstructia hydropower lakes was analyzed. Of these, three are Nature Reservations, Nature 2000, RAMSAR sites. The lakes being re...

The present work dwells on testing methodical approaches to optimization of programs for monitoring over ambient air quality. The key issue here was to determine how many control points are required and make up a list of substances for monitoring in a large industrial center with its area exceeding 350 square kilometers and population more than 1 million people. Ambient air quality in the examined city is influenced by more than 150 industrial enterprises operating in metallurgy, civil engineering, chemical indust...

The hydraulic systems used in the aviation industry use pressurized fluids that transmit energy to various driving systems of the aircraft (hydraulic motors, cylinders or hydraulic actuators). It is known that hydraulic fluids, along with the fuels used, present a potential risk of fire, which can lead to damages or the loss of the aircraft, often with very serious consequences. At the same time, in the event of a plane fire after the crash, hydraulic fluids can be an additional fuel source. For these reasons, the...

The Southern Dobrogea is situated in SE Romania, being included, tectonic point of view, in the Moesian Platform. The Southern Romania is bordered by the Danube to the West and the Black Sea to the East. In the N, the Southern Dobrogea is bordered by the Capidava-Ovidiu subcrustal fault; towards south, it continues to the northern Bulgaria. In the Southern Dobrogea, a carbonate platform developed from Mesozoic (Upper Jurassic and Cretaceous), and continued through the Paleogene up to the Miocene. The Pliocene is m...

Radon (222Rn) is a natural gas produced by the radioactive decay of uranium-bearing rocks and soils in the Earth?s crust. Geology is one of the main factors controlling source and distribution of radon. Most rocks and soils possess small amount of uranium, but there are particular types of bedrocks and unconsolidated deposits characterized by higher than average uranium contents. These lithological types include some granites, light-colored volcanic rocks, phosphatic rocks, ironstones, limestones and shales rich i...

Ground-Penetrating Radar (GPR) surveys can enhance the quantity and quality of information, when applied to archaeological prospection. The potential of the GPR method lies in its relevance to a wide range of site conditions and the complementary nature of the data in comparison with other geophysical methods. The Aegyssus archaeological site is located on the Monument Hill, in the north-eastern section of Tulcea, and was built at the end of the 4th century B.C. Its name, of celtic origin, derived from the legenda...

Research conducted in INCD URBAN-INCERC, within the National Network for Seismic Monitoring and Protection of Constructed Heritage, converges towards the development of a large monitoring system, capable to allow remote identification, in a very short time after a seismic event, of possible dangerous changes in the condition of the instrumented buildings. In order to obtain correct information regarding the behavior of a structural system (due to the lack of data needed to create a reliable model), the advantages ...