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The main purposes of the project were to analyze the possibility of using waste from the energy sector - fly ash from the lignite combustion process - as a growing medium, as well as to use the electricity obtained from the photovoltaic panel to power the equipment located in the constructed greenhouse. In addition, the project involved the development of a connection of equipment to ensure proper air parameters for growing plants. The constructed and equipped greenhouse stand was used to perform vase tests on whi...

Dynamic climate changes require large human action. One of its essential elements is the reduction of anthropogenic GHG emissions. Within the European Union, they constitute one of the two fundamental goals of the European Green Deal strategy, which assumes that Europe (EU) will remain the first climate-neutral continent by 2050. Among the nine sectors of the economy the most widely covered by these activities is the energy sector. Taking into account the assumed rate of GHG emission reduction, it seems that trans...

This study provides a characterization of the Holocene sedimentary processes in Lake Urasar (Lori plateau, Armenia). Lake Urasar is less than 0.1 sq. km with 8.5 m max. depth. 2 m -long sediment core was retrieved by using peat corer in the deepest part of the lake during summer 2023. Obtained core was a subject for detailed lithological description and XRF-scanning. Three lithological units are identified in the sediment sequence reflecting different sedimentation patterns. Unit I (200 - 164 cm) characterized by ...

In this work, the ionic composition of formation water of three oil deposits (C2vr, C2b, C1pr) was studied. The study of these deposits holds both practical and scientific interest. Due to their complex geological structure, they are difficult to develop. Productive deposits are characterized by the presence of widespread unconsolidated zones with high vertical and horizontal fracturing, high layered heterogeneity, the absence of significant regional reservoir-seal rock, and difficulties in cross-well section corr...

In 2023, 18.3 GW of new wind energy conversion capacity was installed in Europe; most of them (79%) represent onshore capacities. Most of this energy production is achieved with horizontal axis wind turbines. For this type of turbine, the location of the transmission coupled with an electric generator or a hydraulic group, in the turbine platform, leads to a significant increase in the mass of the platform, and implicitly in the mass of the pillar that supports the turbine. In addition, turbine maintenance becomes...

The certification requirements for electrical equipment used in potentially explosive environments are outlined in EU Directive 2014/34. In order to certify electrical equipment used in potentially explosive environments, the EU has set requirements. Certification and compliance requirements are outlined in EU Directive 2014/34. All electrical equipment used in potentially explosive environments must abide by this guideline. Electrical equipment makers and their authorized representatives are subject to the direct...

The paper presents issues regarding impedance spectroscopy analysis for the identification of intrinsically safe circuits. The first part of the paperwork presents the explosion risk. In industrial applications, the presence of flammable substances leads to additional requirements for technical equipment used in such spaces. On the other hand, technical equipment used in such spaces must remain in working order even when the risk of explosion is high. For this purpose, equipment used in such spaces should be asses...

A series of platinum catalytic systems stabilized in aromatic polymers were obtained in this work. Commercially available styrene-divinylbenzene (MN100) and polymers synthesized by one-stage crosslinking by the Friedel-Crafts reaction from benzene, naphthalene, and an equimolar benzene-naphthalene mixture were used as polymers. The obtained systems were tested in liquid-phase hydrogenation reactions of benzene, toluene, and benzene-toluene mixture, as well as anthracene in a dodecane medium. The reaction products ...

Water mist systems are increasingly used in a wide range of applications. These systems play an important role in fire suppression, firefighting, and generally in combating the effects of fire. Water has the ability to reduce ambient, flame and fuel temperatures. It is also capable of wetting the fuel and preventing the spread of flames to unburned fuel. It has the ability to displace oxygen and combustible gases from an area, reduce the spread of radiant heat, or trap toxic or other particles from smoke. The effe...

Packaging waste from the industry containing significant amounts of silicon and aluminum were used in synthesis of zeolites. Derived structures ware mostly A (LTA) and X from (FAU) frameworks, respectively. Zeolite were modified in order to increase ability for elemental mercury (Hg0) removal from simulated gas stream. Mercury constitutes a hazardous threat, due to its high chemical and biological activity, durability, volatility and susceptibility to migrations over long distances from the source of pollution. Ac...

In this article, a theoretical and experimental study of the processes of embedding the centralizer bars on the walls of the well during drilling is carried out. For this purpose, a mathematical model has been created that describes the dynamics of the process, taking into account the axial load on the bit and the own weight of the drilling column. The formation of a compacted core in front of the centralizer, as well as the stress-strain state of the medium, is considered. The proposed approach allows us to take ...

Solar energy, as one of the types of green energy, is widely studied by researchers from different regions of the world. Practice shows that the generation of clean energy at solar power plants (SPP) is not always constant, and depends on some external factors, for instance, weather conditions, emergency disturbances, etc. Parallel operation of the solar power plant and the grid eliminates some problems, in particular, fluctuations in the frequency of current due to a shortage/excess of electricity, as well as the...

Investments made in response to climate change could help to foster environment-friendly business practices. Therefore, bioeconomy industries are considered crucial for achieving climate neutrality in Europe by 2050. Accordingly, bioeconomy strategies have been designed in many countries, including in Latvia. Therefore, the aim of the present research is to examine the investment environment and the amounts of gross investment made in bioeconomy industries, as well as foreign direct investment attracted to Latvia ...

Many UN and EU agreements binding on Latvia are aimed at sustainable development, biodiversity and mitigating climate change. In this context, one of the solutions is the development of concepts of bioregions or organic farming regions because the bioregion involves the principles and techniques of organic production and consumption and is characterised by an -organic- lifestyle, healthy nutrition, human relations, nature protection as well as the promotion of a particular area and the peculiarities thereof. Philo...

The increasing focus on sustainability necessitates the examination of environmental impacts across all sectors, including pyrotechnics. Pollutant emissions have been extensively studied, but information on sustainability in the pyrotechnics sector is scarce. Thus, a Life Cycle Analysis (LCA) to study two widely used pyrotechnic devices: bangers and shells was carried out, in order to analyze the environmental footprint and detect points where action can be taken. Using SimaPro software and the Product Environment...

This research focuses on the long-term assessment of vegetation quality dynamics in the Spacvan Basin from 1984 to 2023. The objective is to evaluate how specific climatic factors influence vegetation health. The study employed remote sensing techniques, analyzing satellite images from the LANDSAT and Sentinel missions. The Spacvan Basin, covering 43,519 ha, served as the area of interest. Data collection, processing, and analysis were conducted using the Google Earth Engine platform. NDVI values were measured ove...

After war conflicts or crisis situations, the recovery of territorial communities becomes the most important task for ensuring stability and development. However, effective recovery requires not only material but also informational and communication efforts aimed at forming a positive image and attracting investment. Ukraine has suffered significant damage as a result of the full-scale military aggression, so there is a great need for the implementation of public administration mechanisms to attract investment for...

The optimization of technological processes is vital for advancing scientific and technical progress in exploration activities, particularly in drilling operations. The integration of operating microprocessor equipment and automated management systems has opened up new opportunities for theoretical research in optimization processes and drillings. Control systems for drilling exploration wells on solid minerals enable real-time operation and data collection, processing, and diagnosis of equipment functionality. Op...

The article deals with methods and tools for strategic environmental impact assessment (EIA) in the context of the CEVYKO project, whose facility capacity is 100,000 t/year of processed mixed, separated and bulky municipal waste. Only category O waste (other waste) will be processed. In the introduction, the basic principles and legal framework of EIA are presented, including their importance for sustainability and environmental protection. Subsequently, the specific methods used in the evaluation of projects with...

The eastern Circum-Rhodope belt (CRB) is a major unit that surrounds both the Serbo-Macedonian and the Rhodope zones in the Alpine orogen of the northern Aegean region. This belt contains Triassic-Jurassic metasedimentary successions and Middle Jurassic (176-165 Ma) supra-subduction zone Evros ophiolite. The latter has experienced ocean-floor hydrothermal metamorphism or very-low to low-grade metamorphism. We report on mineral compositions of rock-forming minerals in schist and mafic rocks from the eastern CRB. Ou...

The article describes commonly used imaging techniques for monitoring solar farms using drones, highlighting the advantages of each method and the benefits of precise flight path planning. Thermal imaging is discussed for its ability to detect temperature variations and identify potential issues like cell degradation and electrical failures without physical inspection. High-resolution imaging provides detailed visual inspections to identify physical damages, dirt accumulation, and shading issues, enhancing mainten...

Regardless of its type and size, any organization is faced with risks that can affect the achievement of its objectives in terms of activities, strategic initiatives, operations, processes and projects, with different consequences on strategic, operational, financial results and image and reputation. All activities of an organization involve risks, and risk management is the process of substantiating the decision, by taking into account the effects of uncertainty on the materialization of objectives and determinin...

In this moment the populations of Scolopendra cingulata from Austria, Hungary and the new discovered populations from Romania represents the northern limits of S. cingulata in Europe. These three northern small populations of S. cingulata are very important in understanding the evolutionary history of this iconic species for Europe.

Sustainable tourism at the regional level is an approach to tourism development that aims to maximize economic, social, and cultural benefits for local communities while protecting and conserving the surrounding environment and cultural heritage of the region. This concept emphasizes responsible resource management, reducing environmental impact, and promoting social and economic inclusion. By adopting principles of sustainable tourism, the tourism industry can contribute to the conservation and protection of natu...

Modern agriculture, or precision agriculture, is a method that enables better, more efficient and smarter farming, ensuring sustainable development. Precision agriculture can combine data obtained from GPS systems with data from aerial photographs to precisely determine soil needs based on this data. Combining this with precise weather forecasts and location determination systems provides a powerful tool for more efficient agriculture. New technologies have already created a niche in agriculture. By combining deta...

The scale of annual reproduction of cellulose-containing biomass in nature allows us to draw an unambiguous conclusion that cellulose is the only source of raw materials for the chemical and fuel industries, representing a real alternative to fossil resources and, first of all, oil. Cellulose is the main component of plant biomass. According to some estimates, almost half of the organic carbon in the biosphere is contained in cellulose. Hydrolytic hydrogenation is a special case of carbohydrate hydrogenation. With...

Ukraine actively participated in the implementation of the provisions of the European Green Deal (EGD), seeking to build a "green" economy and a prosperous society. The purpose of this study is to determine the forms and directions of activities of public associations in the implementation of the provisions of the EGD in Ukraine. Influential public organizations involved in the implementation of the European Green Deal are the Center for Environmental Initiatives "Ekodiya" (Kyiv), "Ekoclub" (Rivne), "Ecology. Righ...

Climate change has an increasingly significant impact on the lives of people around the world. In this context, of particular interest is the study of the philosophical aspect of climate change in the Sakha Republic (Yakutia). The study is based on a philosophical analysis of climate change, as well as a generalization of the opinions on environmental issues. The main method is a logical-analytical approach to revealing the philosophical context of climate change in the context of Yakutia. A philosophical view of ...

Biochar can be used as an alternative and efficient adsorbent for organic and inorganic pollutants. Therefore, based on previous study in which, a biochar loaded with mixed metal oxides of iron, tin or titanium catalysts results as a by-product of levulinic esters synthesis from biomass carbohydrates, this paper aim was to test this residue as biochar for the retention of phosphate from water samples. The obtained adsorbents based on Fe2O3-SnO2 and Fe2O3-La2O3-TiO2 were characterized by FT-IR and TGA analyses. The...

In isolated areas without access to the grid where it is necessary to operate certain equipment, such as the operation of a valve in a mining area or some gates on a irrigation canals, an installation with fotovoltaic supply can be used. Considering the intermittent operation regime of the driven equipment, a solar-powered drive installation can be designed, and by storing the energy in a battery, operation can be ensured during the night as well. Thus, the PV power system must be sized (PV peak power, battery and...

Hydrogen, known for its high flammability and potential explosive characteristics, presents significant challenges in safety engineering, particularly in enclosed spaces where explosions can lead to catastrophic consequences. This paper presents the results of physical experiments conducted to investigate the linear propagation of hydrogen explosions within confined environments. The experiments were designed to simulate real-world scenarios and assess the factors influencing the extent and characteristics of expl...

This research compares the water quality in four river bodies passing through different cities in Bulgaria. An eco-chemical approach was applied including physicochemical and analytical measurements, as well as calculation of different pollution indices and the distribution of the element species as an indicator of their bioavailability. The results from analytical measurements and calculated pollution indices show that all the studied water bodies were polluted regarding P-PO43?, N-NH4+, Mn, and Pb. The highest v...

In the evaluation activity of technical equipment intended to be used in potentially explosive atmospheres, by national and international legislation, non-compliant aspects were often reported regarding the choice, installation and maintenance of this explosion-proof equipment. The following main aspects were pointed out: the equipment that was initially chosen and installed appropriately for the specific application but later, over time, improperly maintained; respectively, the situation in which they were inappr...

Geophysical studies on the lunar surface have, in the past, used various methods that contribute not only towards the knowledge of the lunar subsurface but also contribute towards the design of future lunar missions, namely those that will, in the near future, take humans to the Moon-s surface. This work analyzes a specific set of ground penetrating radar (GPR) data, collected during the Chang-E-4 mission of the Chinese Space Agency, using theYutu-2 rover within the von Karman crater, on the far-side of the Moon. ...

The research objective was to develop a methodology for determining the total suspended solids concentration in wastewater based on the color indexes analysis. Determining the structure and properties of natural objects by processing its digital images has become widespread in soil science, since the soil colour is determined by its chemical and mineralogical composition. The material presented in the research can be considered as the initial steps in the development of soil science methods as applied to research ...

Effectively preventing pipe sticking in oil and gas wells is a key aspect of safety and productivity in the oil and gas industry. This paper presents a new torque and drag model developed using machine learning techniques to improve accuracy and predictive capabilities. The model is based on a comprehensive analysis of many factors, including geological characteristics of the well, drilling parameters, fluid parameters, hydraulic conditions, and production equipment parameters. This research explores the applicati...

The results of our study revealed regional peculiarities, which showed an excess of the share of PM10 compared to PM2.5 in the rank distribution and high concentration of soot in the level of impact on public health. It was found that the distribution in terms of contribution to the total risk value (HQ) of the main pollutants is highest in all three zones: carbon (soot), nitrogen dioxide (NO2), suspended solids (PM), where the main share is suspended particles up to 10 microns (PM10). Among the studied zones, zon...

In the present study probabilistic earthquake, scenarios for the city of Varna the third-largest earthquake-prone city in Bulgaria are presented. The probabilistic hazard for a city is obtained by integrating the effects of ground motion from earthquakes of different size occurring at different locations within different seismic source regions and with different frequencies of occurrence. The ground motion maps for the city of Varna are generated combining via GIS, source geometry, earthquake occurrence model, max...

Bioeconomy industries play an important role in contributing to national economies and a transition to climate-friendly farming practices. This is evidenced by various policies implemented, including the United Nations Sustainable Development Goals, the European Union (EU) Bioeconomy Strategy and the European Green Deal. The increasing productivity and new technologies can have negative environmental impacts, affecting the economic framework associated with ecosystem services. To address these challenges, coordina...

Receiver function analysis is a critical tool in seismology, used to study the deep structure of the crust and upper mantle. Information about the deep structure of the crust and seismicity is important initial data for developing a source model and seismic hazard assessment. The presence of sharp discontinuities beneath the monitoring station induces the generation of converted body waves, which propagate at slower velocities than those of the primary P-wave. Receiver function analysis utilizes the lag between th...

The actual climate crisis is forcing the development of new energy sources that mitigate the negative effects of the climate change. Because of that, the use of fossil fuels is expected to be significantly reduced in the coming decades. In this scenario, the production of renewable fuels that reduce the greenhouse gas emissions (GHG) is one of the main world challenges. The present study focuses on synthetic gas production using carbon dioxide from the cement industry, and green hydrogen, simulating the process us...

The article describes the approaches to development of an effective regulatory mechanism to manage carbon intensity of Russian resource-intensive industries. The authors focus their attention on the ferrous metallurgy industry as the top emitter of greenhouse gases (GHG) and the second-largest consumer of energy among Russian industrial sectors. Resource consumption wise this sector is well-studies and regulated by the Best Available Techniques (BAT). Establishing the interrelation between carbon intensity indicat...

This work delves into the process of phenolic oxidation products rdistribution in Nitisols Ferralic and Humic Cambisols, which were modified by (14C) introduced tea biomass. Metabolites derived from tea biomass were found to interact with humic and fulvic acids and form covalent bonds with them. The study of quantitative aspects of the inclusion of phenolic substances in the chemical composition of humic and fulvic acids reveals that humic acids incorporate a significantly greater amount of the radioactive tracer ...

This study investigates the adaptive strategies of farmers in the Todgha oasis, Morocco, as they respond to the pressing challenges of climate change. Through a mixed-methods approach, we assess the resilience mechanisms adopted to sustain agricultural production amidst increasing temperatures, unpredictable rainfall, and shifting ecological conditions. Key findings reveal that farmers rely heavily on traditional water management systems, including khettaras and modern pump-assisted irrigation, to mitigate water s...

Assessment of non-carcinogenic risk for the child population health from chemical substances taken with the motor vehicle exhaust gases in 4 districts of the city of Kazan based on the monitoring data from FSFHI -The Center of Hygiene and Epidemiology in the Republic of Tatarstan- for the period from 2015 to 2021 was carried out. The average annual concentrations of chemical substances exceeded the allowable level of standards (MAC) from 2.32 to 9.96 of MAC in all zones. The value of the total daily dose on the in...

In the period 2010-2022, Romania has seen a continuous increase in the share of renewable energy in gross final energy consumption, promoting and using green energy sources. In 2019, more than 24% of energy consumption came from renewable energy, ranking 10th in the EU, surpassing the European average, and by 2030, Romania aims to reach a share of 49.4% renewable energy in gross final consumption of electricity. In this perspective, climate change is the most discussed topic, and from the analysis of CO2 emissions...

The roughness of a ship-s hull can have a significant impact on the environment, primarily through its effect on the ship-s fuel consumption and, consequently, carbon emissions. The resistance a ship encounters as it moves through the water can be broadly categorized into two main types: frictional resistance and wave-making resistance. Hull roughness increases frictional resistance, also known as skin friction resistance. This resistence component is a major aspect of the total resistance of a merchant ship, lead...

The deep processing of lignocellulose feedstock (including waste from the woodworking industry, agriculture, and agro-industry) allowing the high-added value products to be obtained is one of the key scientific problems. Lignocellulose biomass is a potential feedstock for the production of heat, electricity, fuel, chemicals, and other bioderived products. The liquefaction is considered to be one of the most promising ways to convert lignocellulose biomass into liquid fuels. During the liquefaction, lignocellulose ...

Present paper objective is to assess the seismic hazard and seismic risk and provide an analyses of earthquake scenario for the transboundary area of Ungheni town in Republic of Moldova and Ungheni-Prut in Romania. For the present study as design seismic action (earthquake scenario) was selected the Vrancea earthquake with 475 years return period and magnitude Mw = 7.9. At first it was analyzed specified earthquake scenario using special macro seismic attenuation equation. This allowed the obtaining of probable di...

Updated normative documents within the Fit for 55 legislative package envisage increased dynamics in achieving European Green Deal goals, which are obligatory for EU countries. This directly applies to over 65 million energy-inefficient buildings in EU27 urban areas as well as heat supply systems. However, unified funding for long-term renovation programs is not planned. To respond quickly to diverse financing options with distinct conditions and target variables, a costly and time-consuming elaboration of detaile...