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During the mining, handling, and processing activities, the production of fines is inevitable due to breakage of large particles caused by compression, abrasion, attrition and impact of the ore particles with one another and the equipment during beneficiation and handling. The fines generated as a result, are generally high-grade feed stock materials and add value to processes. Many attempts to recycle these fines have shown some limitations because of the quality of binders used for agglomeration. Pyrometallurgic...

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...

Artificial intelligence (AI) is well known as a robust technique that can support and improve the quality of human life. In the mining industry, the applications of artificial intelligence have changed the sciences and technologies as well as the performance of the mining industry through machine learning, autonomous technologies that provide many economic benefits to the mining industry by reducing costs, efficiency and improving productivity. In principle, reducing the exposure of workers to hazardous conditions...

Gypsum composites are promising building materials, but they have disadvantages such as low strength and water resistance. To improve these properties, a self-reinforcement method can be used, where the gypsum matrix is reinforced with crystals other than gypsum. One type of such crystals is ettringite. To obtain a self-reinforced gypsum composite, it is necessary to maintain a high pH environment and sufficient ions to form ettringite. In this work high-calcium fly ash, which is a waste product of coal combustion...

Most rivers in the temperate zone experience flooding due to snowmelt or heavy rainstorms. The lower Danube rivers has caused significant economic damages and in some cases even loss of human life. Understanding the relationship between the occurrence rate of Danube rivers flood events and climate change is crucial for flood risk management in Romania. Here we present a multiproxy and observational data set of floods from the lower Danube Basin Rivers over the last millennium. The results highlight that the lower ...

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 ...

Route search engines are essential tools in online applications that address a wide range of user needs. However, the distribution of such applications and simple search engines presents a diverse landscape with different outputs for the same routing tasks. Although they rely on well-established algorithms, the use of different datasets often leads to different results. This paper aims to compare selected route search engines, investigate the differences in their outputs, and provide useful recommendations to user...

During summer-autumn 2023 hydrophysical, hydrochemical, and hydrobiological measurements had been done on six small upland Armenian lakes. For the first time colored dissolved organic matter (CDOM) and methane (CH4) - emission were observed. Studied lakes are on 1479-3312 m a.s., has maximal depth up to 12 m with groundwater springs input. Anoxic conditions were noticed on the lake bottom in August but changed to oxygen in October. Conductivity range was 0-231 ?S cm-1, TDS - 3-102 mg l-1, pH - 6.4-9.4 for surfaces...

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...

Hydrological droughts are formed by different processes, but how strong and heterogeneous they are, leading to different manifestation and characteristics of the droughts. Droughts have no distinct starting date, but different methods gives a course of action that may help to identify dry signals and possible drought conditions for early warning. We choose hydrological drought indices that are applicable for Bulgarian conditions. Using statistical methods, minimum flow, deficits and spatial characteristics can be ...

On the background of regional climate changes, an increase in the frequency and intensity of extreme droughts has been observed in many regions of Europe in recent years, and this trend is expected to continue in the future. While common in southern Europe, including Bulgaria, drought can adversely affect human life and economic activities. Extreme droughts lead to water scarcity, restricting the availability of irrigation water for agricultural purposes. In the regions where irrigation is vital for sustaining cro...

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 seismic hazard in Polish copper mines has remained continuously at a high level, generating a relatively large number of accidents and negatively affecting the continuity of the exploitation process. To minimize the threat, a number of preventive actions are taken to reduce the ability of the rock mass to accumulate stresses, which should ultimately result in a reduction in the number and energy of seismic phenomena. Unfortunately, as previous experience shows, the effectiveness of preventive measures is sever...

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 high risk of natural disasters to which Ilha de Mocambique (IM) and its Buffer Zone (BZ) are naturally exposed and the demographic explosion it has suffered increased the loss of ecological wealth, biodiversity and the mischaracterization of the cultural identity it holds. Thus, there are required urgent measures for its values safeguard, preservation and valorization. The primary objective of this proposal is to improve the sustainability of IM and BZ enhancing its development trough landscape and urban plann...

Every day, human activities generate large amounts of solid waste. To ensure the quality of the environment, waste must be further treated to prevent it from accumulation in landfills. In the case of materials that cannot be recycled or reused, such as municipal solid waste, burning in waste incineration plants to generate heat or electricity appears to be the appropriate solution of such waste disposal. However, combustion processes generate residues, such as bottom or fly ash, which must be stored. Fly ash gener...

In contemporary agricultural practice, ensuring sufficient bioavailable macronutrients, particularly phosphorus, for plants in phosphorus-deficient soils remains a significant challenge. As a promising alternative, the application of phosphate-calcium-based nanofertilizers (NFs), with or without zinc, emerges as a suitable solution, offering targeted effects through foliar dispersion. However, current knowledge gaps persist regarding the development and colloidal properties of applied NFs and their impact on sunfl...

Digitalization and the concepts of Industry 4.0 undoubtedly contribute to companies' competitive advantage, which can be achieved, among other things, by improving the efficiency and stability of the production process through their implementation. The main purpose of the article is to demonstrate the impact of digitization on the most important indicators of production efficiency using the example of a student project of a production line simulation system, implemented by the Student Scientific Circle of Manageme...

Approximately 5% of the area of Slovakia is made up of built-up areas and courtyards. These represent land where buildings and courtyards, motorways, roads, local roads, railways, airports, and water structures are built. To compare the influence of the urbanized part of the country on the daily air temperature, the city of Nitra, located in the western part of Slovakia, was selected. Meteorological stations are in the territory of the city, from which air temperature data were obtained. For the comparison of the ...

Urban areas are characterized by very intense and complex interactions between built objects and natural elements, especially in terms of the impact they have on the local microclimate. One of the most important aspects of this interaction is the way in which vegetation influences incident solar radiation, which has a major impact on energy consumption, comfort and the overall sustainability of urban areas. In this study, we focus on the city of Zagreb, where we conduct a detailed analysis of the impact of urban v...

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...

In today's fast-changing world, the link between engineering and environmental protection is very important for higher education institutions (HEIs). As global issues like climate change, resource loss, and biodiversity decline grow, there is an urgent need for professionals who have both technical skills and environmental awareness. These academic programs help create a skilled workforce that can design solutions focusing on ecological sustainability and promote teamwork, connecting engineering and environmental ...

This study assesses the efficiency of various geomorphometric terrain characteristics and a number of categorical geological parameters in training statistical models to create geomorphological maps. The study area is the central sector of the western coast of Yamal Peninsula (S = 10 400 km2). The terrain is exceptionally flat and morphologically similar, but the genesis and age of the surfaces are diverse. The background surface type is marine terraces of various (Middle Pleistocene to Holocene) ages, subsequentl...

Austempered Ductile Iron (ADI) is a promising material whose structure is obtained by isothermal processing, i.e. isothermal decomposition of austenite in the bainitic range. It is used in various industrial fields. It is characterized by an excellent combination of tensile strength and ductility, exceeding the properties of quenched and tempered steels in the strength range of 800 - 1500 MPa. Its production is problematic because the ferritic or ferritic-pearlitic ductile iron (SGI), which is the basis for the pr...

Heart rate (HR) is a fundamental physiological parameter that reflects cardiovascular health and fitness levels. Accurate HR monitoring is essential for diagnosing medical conditions, guiding physical training, and monitoring stress and recovery. With the increased development of wearable devices, the new direction of research appeared in the field of personalized comfort based on the physiological response and closing the HVAC control loop based on the occupant-s involuntary reaction. This article reviews current...

This study investigates the relationship between users- comfort and energy consumption in an educational building located in a humid continental climate. Through a year-long monitoring program, we collected data on indoor temperature, humidity, lighting levels, CO2 concentrations, and natural gas consumption. Our analysis revealed that during the heating season, the average indoor temperature was 24.03 degrees Celsius while natural gas consumption reached 41.71 megawatt-hours (MWh). By analyzing the relationship b...

The present research evaluated a facade alternative to reduce the indoor temperature of buildings in the Ecuadorian Amazon (Yantzaza, Ecuador). Three scale models were compared: one with a gabion facade and leafy vegetables (onion, lettuce, basil, chamomile, and cabbage), one with a gabion facade only, and one with a clay brick (traditional) facade. Thermal data from inside the models were analyzed in March (warmest month) and January (coldest month). The results showed that between 13:00 and 15:00 in January and ...

While the interaction between the cement-based binders and different types of fillers is described sufficiently, the behaviour of composites, containing gypsum and any type of filler was studied less frequently and studies focused on the interaction between the composite binder and filler are rare. We studied ternary binder composed from gypsum, lime and silica fume in combination with several types of fillers (sand, expanded perlite, expanded clay and waste polyurethane). The strength of the composites was measur...

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...

Temperature affects the number of water properties. Density, specific heat capacity, surface tension and more change with temperature. The size of the water droplets has strong impact on the shielding of radiant heat or the ability to extinguish and suppress fires. Determining the droplet size distribution of water mist is used in wide range of industries, in fire protections, spray technology, pharmaceuticals or automotive industry. The work deals with the measurement of the droplet size distribution of eight sel...

Innovative construction materials and techniques can be sourced from natural resources and traditional methods, and applied to green housing concepts to enhance energy efficiency and occupant well-being. Innovation in vernacular traditions can be achieved by integrating the modern, current methods and techniques, materials and tools within local traditional technologies and associated natural raw materials (clay, sand, wood, straw, and wool) in order to enhance ecologic housing facilities with improved overall per...

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...

The work aims to characterize the slope instabilities present in the Taveiro Sand and Clay - Areias e Argilas de Taveiro - Formation, which occurs in the municipalities of Condeixa and Coimbra, in central-western Portugal. The Areias e Argilas de Taveiro Formation, of Upper Cretaceous - Campanian - age, is made up of successions of metric layers of red, and brownish or pinkish pelites, interbedded with coarse arkosic sandstones. It has as maximum thickness of about 170 m. A total of 27 slopes with stability proble...

Managing water deficits in coastal areas presents significant challenges amid current climate fluctuations. This study examines the hydrological and water management factors contributing to seawater intrusion along the Bulgarian Black Sea coast. Utilizing data from field monitoring and hydrological model simulations, the research highlights the anthropogenic impacts shaped by the structure and dynamics of water supply. Findings reveal that rainfall levels in the Bulgarian Black Sea coastal region are below the nat...

The drainage challenges of a large settlement encompass both urban areas and adjacent agricultural and industrial zones. Surface runoff from increasingly impermeable subcatchments flows into the underground gravitational closed conduits drainage network of the settlement during rapid storm events, a phenomenon effectively modeled using hydrodynamic simulation tools such as SWMM. Meanwhile, excess precipitation water that fails to infiltrate the soil accumulates predominantly on agricultural lands outside the settl...

Numerous studies have examined the potential integration of Building Information Modeling (BIM) with Geographic Information Systems (GIS), typically focusing on simplifying complex BIM data for presentation within a GIS environment. However, there is a unique circumstance with extensive geodetic databases that remain untapped in construction processes in Poland. The emergence of the more applicable IFC format version 4.3, particularly relevant to surveying, presents an opportunity. The article proposes leveraging ...

Urbanization is an ongoing trend. It causes various negative issues, including strain on human health and biodiversity. Cities are often subject to negative effects of climate change. Currently green and blue infrastructure are often seen as potential solutions for these problems. However, integration of topographically diverse sites and geological elements into urban landscapes is rarely considered as an important measure for addressing societal and environmental issues in cities. This can lead to lost opportunit...

The article examines the effectiveness of measures to reduce flood risk in small watersheds in the Czech Republic. Currently, there is a search for integrated approaches that combine cost-effective erosion control measures (ECMs), in the form of organizational and agrotechnical changes, with more expensive technical measures (TMs) in the form of infiltration trenches and dry reservoirs. To achieve this goal, the critical drainage profile of a small village in the Olomouc region, at the interface between rural and ...

It is essential to adopt appropriate prevention measures to protect workers operating in confined spaces. Working in confined spaces poses a risk factor for accidents or unwanted events with an impact on human health. Implementation of good practice rules in these situations is a mandatory preventive measure. A confined space is any location not intended for regular work, has entry or exit restrictions, is under atmospheric pressure, has inadequate ventilation, a risk of drowning or suffocation, a contaminated atm...

In the current paper the effectiveness of complex Fe-Mn-B SHS alloys and carbideforming additives into iron-carbon alloys and for obtaining 30MnB5, 22MnB5 steels and bainite cast iron has been established. The influence of alloying components on the structure and properties of the obtained alloys has been investigated. On the basis of the analysis of the obtained experimental data the influence of heat treatment on the microstructure and properties of the obtained alloys has been established. The conducted researc...

The present study aims to investigate the current conditions of saltwater intrusion in the Shabla - Krapets area, a long-known area of groundwater salinization. The main objectives of this investigation are (i) to find the interface (boundary) between fresh and salty (brackish) water and (ii) to study the seasonal dynamic of saltwater movement in the aquifer (intrusion). The results were obtained from July 2022 to the end of 2023. In the area of investigation (aquifer), there is a fresh groundwater layer which thi...

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 ...

Radiation technologies using ionising radiation and radionuclides are now widely used in all areas of human activity. These include applications in medicine, industry, nuclear energy, and science. Exposure to ionising radiation therefore affects radiation workers employed at these sites, a large group of people who are in the vicinity of the sites in the course of their work, and people who live and work in the vicinity of the sites. However, the positive properties of ionising radiation and radionuclides that we ...

"Just in blast - VR training" is a student project, the main idea of which was to create a VR (Virtual Reality) training in blasting technology. The footage was recorded on the site of the Holcim Dolomite Mine "Radkowice" in cooperation with SSE Poland in the summer of 2023, with 360-degree wide-angle cameras. The acquired material was then properly selected and edited for further activities, which ultimately led to the editing and creation of an application in VR extension. The whole project is aimed at populariz...

Asbestos is a general name applied to a group of silicate minerals which naturally occur in fibrous form. It is a natural mineral widely used in the past, especially in the construction industry. Despite its good performance properties, it is currently known that asbestos has carcinogenic properties. The problem of storing asbestos wastes is significant worldwide. This especially applies to countries where the production and use of asbestos products is prohibited by law. One of the possible methods of proceeding a...

This study analyzes the impact of virtual collaboration tools on knowledge sharing in distributed and virtual teams, operating at the intersection of technology, human behavior, and organizational processes. It aims to unravel the complexities of knowledge sharing in modern workplaces by examining the role of these tools in facilitating knowledge exchange, identifying factors for effective practices, and exploring the impact of organizational culture and industry dynamics. Through empirical research, including a s...

The increasing interest in biostimulants as sustainable solutions for agriculture has been widely documented in high-impact scientific literature. Biostimulants are recognized for their ability to promote plant growth, enhance nutrient uptake, and increase resilience to environmental stress. This study researches the effects of the newly developed Georgian biostimulant BactoFert-L Boden on the growth and development of cucumber seedlings (Cucumis sativus) under various saline stress conditions. Soil salinization i...