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The issues related to the use of products generated from Continuously Operating Reference Station (CORS) for precise positioning are the main focus of the study. Geodetic measurements were conducted at a real site, and different types of data provided by commercial CORS networks were compared - Network Real Time Kinematic (Network RTK) via VRS, generated data for subsequent processing (Virtual Rinex), and raw data from a physical station. The current national regulations, as per [1] , were adhered to, and the aim ...

Education is an ongoing process that enables individuals and society as a whole to reach their full potential by developing their abilities. It serves as a crucial prerequisite for sustainable development and the formation of public awareness. Environmental education, which begins in early childhood and continues throughout life, plays a vital role in fostering environmental literacy. Thus, assessing the state of environmental education among school-age students is of great importance. Our research aimed to evalua...

Climate change is a very serious threat, and its consequences affect many different aspects of our lives. In Slovakia, we will also have to get used to the faster onset of warm and dry weather in the spring. The year, from a temperature point of view, ended as the 2nd warmest since 1931. Statistically very significant (annual) deviations occurred in the entire territory of Slovakia, so we characterize it in terms of temperature as strongly to extremely above normal. We monitored the influence of climatic condition...

The assessment of the influence of economic activities on the population in the eastern region of the Jiu Valley (located in the south-western part of Romania) entails several stages. These include measuring the extent of air pollution, selecting a tool for evaluating air quality, and most importantly, implementing a method for estimating the environmental impact. The objective of the study is to analyze the environmental conditions by analyzing the data collected from the six designated locations and utilizing th...

This study addresses the significant challenge of hole cleaning in drilling operations, which is essential for preventing stuck pipe incidents-a major cause of non-productive time and additional costs in drilling. This research aims to develop and validate machine learning models that enhance the prediction and optimization of cuttings removal during drilling. Utilizing a dataset derived from historical drilling operations, we employed regression analysis and neural network models to forecast the presence and heig...

In today's globalized society, it is becoming more and more necessary to include sustainable development ideas in accounting methods. The main concepts of land accounting within the context of sustainable development are covered in detail in this abstract. Sustainable development requires an accounting methodology that goes beyond typical financial measurements since it is defined by the balance of economic, social, and environmental components. We examine how social responsibility, resource efficiency, carbon foo...

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 contribution focuses on the optimization of the economic balance of the sorting line for the processing of municipal waste with the aim of increasing the efficiency and sustainability of waste management. This abstract provides an overview of the key economic aspects that affect sorting line operations, including cost, revenue and financial return analysis. Major cost items include investment in modern sorting line technology, installation and commissioning costs, and operating costs associated with maintenanc...

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 European business reality, and within it in production processes, sustainability issues are becoming as crucial as economic aspects. An attempt to respond to these challenges is the Lean Green concept, which integrates financial and environmental aspects as equally important for building company value. The Agenda 2030 Sustainable Development Goals, particularly the goal of responsible consumption and production and climate action, are becoming key targets for corporate action. The aim of this article is...

A functioning land management is one of the key attributes of the successful management of a country. The cadastre of the real estate is one of the most important land management systems. However, for the successful management of land, the cadastre needs to be filled with complete and high-quality data. In Slovak Republic, the problem of the quality of cadastral data have been a long-discussed topic. One of the biggest quality issues of the cadastre is its map collection. Some of the maps in the cadastral map coll...

The aim of this paper is to assess the impact of spatial, economic and social transformation and their influence on the development of a landscape valorization strategy, in terms of the possibilities for implementing structural changes in the territory of a country, through which structural changes to support the introduction of new technologies and innovations, resulting in a change in the sectoral structure of a country's economy. On the other hand, by assessing the impact of social transformation, an explanatio...

The paper presents a quality evaluation of the kinematic model concerning the relative height movement of the Earth-s crust that refers to the territory of the Republic of Croatia. This kinematic model enables determination of vertical displacements and movement speeds of discrete points on the Earth-s crust. So far, the quality of the model has been rated only for certain parts of the Croatian territory, but this paper shows the results of the model-s quality evaluation for the entire territory of the Republic of...

The climate, energy, and health crises, alongside the conflict events in Eastern Europe, have generated new directions regarding the perspectives of global and national energy transition, by orienting it towards a decarbonized economy. The increased frequency of climate change-related weather events affects the availability of renewable energy sources (wind and solar) and energy supply security. The abandonment of fossil fuel-based electricity and heat due to commitments and objectives established in the United Na...

As part of the experimental studies carried out in the Department of Civil, Environmental Engineering and Architecture of the University of Cagliari, to identify the best techniques for recovering of combustible materials, contained in the waste resulting from the dismantling of the anodes of spent electrolytic cells used in the production of primary aluminium, to be concentrated by flotation, work was first carried out to reduce the size of the waste, in order to give it a particle size that would allow it to be ...

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 ...

The cultivation of American cranberries (Vaccinium macrocarpon Aiton) with organic fertilizers is becoming more common in the world. With 180 ha of producing plantings and 376 tonnes of yearly production, Latvia is one of the largest cranberry producers in the world. The lack of knowledge on fertilization management can be an obstacle to a successful transition to organic farming. The objective of this study was to test the effect of organic fertilizer of animal origin on cranberry mineral nutrition status, plant ...

We are living in an information dense world, where the sustainability is key. Even though civil engineering projects are highly technical, they require precise planning and clear communication channels to be successful and achieve this purpose. For this, in recent years, all around the world, various entities and decision boards worked to put together a set of rules to define and standardize the interaction between all the involved stakeholders (e.g. investors, designers, builders, and operators). Using the BIM (B...

The excess demand for natural River sand (NRS) as a construction material is increasing day by day. As a result of demand, there are server environmental impacts such as lowing the water table, damaging the flora and fauna etc. This study is to focus to prevent the environmental impact by developing artificial sand as a replacement for natural river sand (NRS). Development of artificial sand by mixing high volume fly ash, cement, natural river sand, and locally purchased high solid content polycarboxylate ether-ba...

The efficiency of zinc oxide nanoparticles (ZnO-NPs) in inhibiting Phytophthora spp. growth in both durian fruits and stems is demonstrated. The size of ZnO-NPs used was in range of 25-50 nm in diameter. Diseased durian sample were collected from a durian orchard located in southern of Thailand. The pathogen of diseased durian was isolated for subsequent morphological identification. Three distinct strains of Phytophthora spp. (designated as PHY41, PHY45, PHY49) were successfully isolated and were found in colonie...

Currently, solar energy is one of the most widely used types of green energy in the world. In different parts of the earth, solar insolation is not constant. Therefore, this study aims to determine the main characteristics of solar insolation in the different climatic zones. This paper analyzes the prospects for using solar energy in subtropical, temperate-continental, continental, sharp-continental, and monsoon climate zones. The efficiency of converting solar radiation into electrical energy is estimated conside...

Modern electrochemical technologies for surface treatment of chromium based electrolytic coatings to create protective, antifriction materials are considered.The physicochemical fundamentals of the processes of electrolytic formation of conversion and composite electrolytic coatings are highlighted. The purpose of our researches is working out technology of nano-structured composite electrolytic coatings obtaining and revealing optimum mode for effective corrosion proof coatings electroplating. The coatings were d...

There are situations in which human health is at risk from inhalation of hazardous substances and particles (viral epidemics, biological weapons, chlorine leaks, nuclear accidents, asbestos removal, quarrying). In response to these scenarios, emphasis is placed on respiratory protection and minimising exposure to these substances and particles. One of the most commonly used respiratory protective devices is respirators. However, respiratory protection for children is not addressed by any manufacturing or testing t...

The paper presents a medium-temperature modular pyrolysis plant generating electricity from syngas (SG) produced by air conversion of pyrolysis liquid and fed into the electrochemical generator (ECG) battery. Electric output of the plant and district water heater is 100 kW and 126 kW, respectively. The main power characteristics of the plant are determined by physicochemical modeling and energy budgeting methods. Specific consumption of pyrolysis liquid to produce electricity and heat is shown as 108 g/kW-h (169 g...

Lava tubes are natural underground structures formed by volcanoes during magmatic eruption events. Their exploration has aroused undeniable interest in the scientific community because of their potential as future habitats capable of hosting human missions in the Solar System. Indeed, there are significant topographic features that indicate the existence of lava tubes on the Moon and Mars, offering natural shelter and environmental insulation for permanent planetary settlements. The article summarizes the geologic...

Through the complex analysis of the geomagnetic database of the Surlari Geomagnetic Observatory for over 80 years, corroborated with the data of other planetary observatories from the INTERMAGNET network, we have extracted the geomagnetic information that is correlated with the specific physical parameters of space weather domain. Space weather refers to the conditions and phenomena occurring in outer space that can influence the near-Earth space environment. This concept includes a variety of events and condition...

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 ...

Nanomechanical systems necessitate components with unparalleled precision and minimal frictional resistance to achieve optimal performance. Nanobearings represent a critical class of components that facilitate rotational or linear motion at the nanoscale. This paper presents a comprehensive classification of nanobearings, encompassing their structural attributes, materials employed, and operational mechanisms. Additionally, it provides a detailed mathematical formulation that describes the static and dynamic behav...

In the REPowerEU strategy, the European Commission proposes accelerating renewable hydrogen production by 2030 to produce more affordable, safer, and sustainable energy. Hydrogen energy has significant potential in the future of transportation. Its many benefits include reducing pollution, diversifying energy sources, having higher energy density than batteries, and being used for long-distance or high-tonnage transport. The present article proposes an analysis of the use of hydrogen energy in transport between po...

The article develops one-dimensional linear regression mathematical models that establish the relationship between the activation potentials Ecrev, repassivation Erep, and corrosion Ecor of the 06KhN28MDT alloy used in the production of plate-like heat exchangers and its chemical composition and structure components in model recycled water. It has been found that the limiting potential Elim of the alloy shifted in the positive direction with an increase in the content of Cr, Mo, Si, S, the volume of titanium sulph...

In recent years the subject of reliability prediction of complex systems has become more significant because of increasing the criticality of the infrastructure. The present research refers to surveying the operation of pumping stations and problems encountered during the exploitation, as well as developing a reliability assessment methodology. The main causes of damages in pumping stations are analyzed according maintenance data from water supply and sewerage operators. Reliability assessment is based on the dete...

Potential environmental impacts of growing maize as monoculture lead to efforts focused on finding other potentially suitable crops or their combinations that could replace the pure maize cultures. The most frequent and most effective combination is a mixed crop of maize and legumes. The presented paper deals with the issue of the quality of post-harvest residues when growing maize in the system of mixed cropping. In the field experiment, yield and quality of post-harvest residues were studied during the growing s...

In economic forests, the productivity of forest stands should be increased as much as possible, because the global demand for timber is growing every year. Planted forest trees can be realized using the advantages of selection, naturally regenerated - faster growth can be achieved by improving the growing conditions and limiting factors that reduce or delay the formation of growth. Data were collected in 6-year-old P.sylvestris forest stands Cladinoso-callunosa and Vacciniosa. The plots were established in an area...

The research uses monthly water flow in river watersheds within Danube-s river basin - Ogosta, Iskar, Yantra and Rusenski Lom rivers, as pilot basins. The water flow indicators describe river flow regime and hydrological streamflow characteristics. Our article describes the determination of environmental flow limits on surface water abstractions in Bulgaria. Monthly river flow is characterized by annual variability due to climate factors and anthropogenic impacts. Furthermore information from hydrometric stations ...

Changes in land use and architectural renovation are a normal process in historic urban centres, and as a consequence there are changes in the occupation of properties, such as the loss of vegetation cover and filtering soils that could be integrated into the urban green system, which is now almost entirely concentrated in the public space. In this study, a series of orthophotographs of the historic centre of the city of Loja were analysed to determine the changes in vegetation cover and its distribution among squ...

Ticks (Ixodidae and Argasidae) pose significant health risks as vectors for infectious diseases, with their prevalence expanding across Europe and North America. Ticks employ sophisticated sensory mechanisms, notably utilizing Haller's organs, to locate and sense their hosts. These sensory structures detect various cues, including chemosensation, changes in atmospheric CO2 concentration, and radiant heat emitted by potential hosts. Once a host is detected, landing is facilitated by electrostatic attraction, accele...

One of the promising areas of utilization of solid technogenic waste from energy generation is their processing to produce alumina, the production of which is accompanied by the formation of by-products that can be used to produce belite sludge (2CaO-SiO2). The basic schemes of purification of the initial ash from carbon and iron oxides are proposed. Using the example of ash from coal burning in the Ekibastuz basin, the possibility of obtaining two grades of belite sludge is shown. Up to 1.5-1.8 tons of belite slu...

In addition to excellent mechanical, physical and chemical parameters, magnesium oxychloride cement (MOC) composites offer numerous environmental benefits, particularly with regard to the necessary reduction of carbon dioxide emissions associated with the production of Portland cement based building materials. However, the limitation to the wider use of MOC is its low water resistance. Therefore, the possibility of improving the water resistance of magnesium oxychloride cement (MOC) composites by nano-adjustment u...

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 ...

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...

In this study, we present the design and implementation of an experimental stand tailored for the analysis of hydrogen explosions with the capability of modifying the propagation direction. Hydrogen explosions pose significant safety concerns in various industrial settings, and understanding their behavior under different conditions is crucial for risk assessment and mitigation strategies. The experimental setup integrates precise control mechanisms to manipulate the direction of explosion propagation, allowing fo...

Agate-like soil cover structures (ASCS) of leached chernozems are common in some regions of Russia with a total area of 425 242 km2 (the republics of Tatarstan and Bashkortostan, Orenburg, Samara, and Ulyanovsk regions). The term -agate-like structures- was proposed due to the fact that on remote sensing data they resemble a section of the Timan agate. The structures are formed on loamy and clayey Quaternary sediments with a thickness of 0.5-5 m, overlying Permian sediments (bedrock). It is possible to identify th...

Satellite motion control in the vicinity of the libration point with expenditure criteria is considered. Expenditure optimization is natural in the case, where it is necessary to keep mechanical system in the neighborhood of the equilibrium point for a long time. Disturbing factors from time to time distort this system unacceptably far from the equilibrium point, and we need to extinguish these deviations, using fuel or another resource, which reserves are limited. Optimization of the satellite motion control acco...

Sustainable food production is growing along with consumer demands to find healthy products. The management and minimization of food by-products and the recovery of products with low economic value represent both a trend and a current necessity for the food industry. Prunus cerasifera is a species of plum native to Southeast Europe and Western Asia. It is also called Cherry Plum and Myrobolan Plum. It is cultivated mainly as an ornamental plant with several varieties differing in leaf and bud color and secondarily...

The paper presents the pattern of variation of critical velocity during longitudinal downward ventilation in an inclined road tunnel with its slope varying within 0-8 degrees. The results of both full-scale numerical modelling and laboratory experiments for a 1:10 scale tunnel models are presented. The effect of fire on the critical velocity and gradient factor was studied on the models. During the numerical modelling, the seat of fire, fans and tunnel portals were modelled with 0.1*0.1*0.1 m cells, while the cell...

This article deals with the issue of the indoor environment in terms of optimal conditions of thermal comfort and the satisfactory quality of indoor air. A weekly measurement of the parameters of the indoor environment was carried out in the building of the day rehabilitation centre in order to verify the state of the indoor environment, to determine the processes that create the indoor environment and to define the factors that affect the resulting state of the indoor microclimate. One of the important factors is...

In the Czech Republic, despite the high demand for housing, a large number of houses remain unoccupied. Many of them are falling into disrepair, especially in the countryside. And at the same time, new houses, without architectural and urban planning qualities, are growing right next to them on agricultural land. In my work, I deal with how to adapt these old houses to the current requirements for family housing. This includes requirements for energy savings for the indoor environment, especially thermal comfort. ...

Briquetting is the pressing of dusty materials into pieces of the same shape and size. Briquetting can be done without a binder or with the addition of a binder to the briquetting mixture. Briquettes can have any shape, but the most common is the shape of a cylinder. The briquettes must be strong enough to eliminate the possibility of damage during transport and must be strong enough even at high temperatures. The briquettes have a regular shape, have the same weight, are more durable and easier to transport. They...

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...

The existing at Bulgarian Ship Hydrodynamics Centre (BSHC) wind tunnel named MINIAT is under upgrade, in order to expand the range of the Center's capabilities and the scope of aerodynamic research by enlarging the working section sizes and closing the air flow. This renovation is inspired by recent development of modern technologies for renewable wind energy conversion and necessity for comprehensive investigation of environmental effects. The objective of this study was to theoretically calculate a new aerodynam...