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Rapid growth of world population and economic activities continue to cause the increase of anthropogenic greenhouse gases (GHG) emissions. To mitigate GHG emissions and limit global warming, researchers and practitioners around the globe search for clean energy solutions. Many researchers believe that hydrogen (H2), with its high energy density, has a promising potential. Yet, practical implementation of H2-based energy generation faces technical and economic challenges. So far, over 95% of global hydrogen product...

This paper analyses the current development status of hydrogen production technologies and projects global demand growth through 2050. Production costs and CO2 emissions per kilogram of hydrogen are identified as key factors influencing the adoption of hydrogen technologies. While fossil-based methods currently offer cost advantages, electrolysis and biological processes demonstrate superior performance regarding CO2 emissions. Provided that sufficient investments are made, the cost of renewable energy production ...

Levulinic acid (LA) obtained by processing of plant biomass is used to synthesize many important compounds, among which is gamma-valerolactone (GVL) - a platform chemical. At present, bifunctional catalysts based on inorganic supports are the most widespread in the reaction of selective hydrogenation of LA to GVL. Polymers can serve as promising alternative to inorganic supports. In the framework of the presented study, the series of amorphous aromatic polymers was synthesized using different monomers: phenanthren...

Hydrological droughts are formed by different processes, but how strong and heterogeneous they are, leading to different hydrological droughts characteristics and propagation. 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 drought early warning and predict to some certain level the magnitude and water required for hydrological drought recovery. We choose hydrological drought indices system that are a...

To investigate the reactivity of various mineral groups with oxalic acid, a series of long-term beaker experiments were conducted using a saturated solution of oxalic acid dihydrate (~50 g/100 mL) in distilled water, heated to >100 -C to enhance dissolution efficiency. The selected samples represented a broad range of mineralogical classes: brochantite (hydroxy-sulfate), malachite (carbonate hydroxide), pyrite (sulfide), chrysotile (silicate), and a Fe- and Cu-rich metallurgical slag containing complex, heterogene...

In this article we started from the global warming trends due to climate change. These are leading to an increase in the heat risk index, particularly in areas where green infrastructure is lacking, where the population is dense and multi-storey residential buildings are dense. This is the reason why we first proposed a bibliometric study resulting from the growing interest in such analyses using GIS technology. The next step was the development of an automatic model based on specific features and its application ...

Parsnip (Pastinaca sativa) is a vegetable with high nutritional value, which is cultivated mainly for the consumption of its roots, used as a spice in the preparation of dishes, being appreciated for its rich fiber content, as well as for vitamins and bioactive compounds. The paper aims to assess the differences between raw and cooked parsnip, based on its nutritional composition, focusing on the content of amino acids, fatty acids and essential vitamins, as well as on how these components influence health. Parsni...

Nanotechnology is increasingly being integrated into modern industrial applications, including the development of next-generation nanofertilizers (NFs) containing essential and non-essential elements such as zinc and silica. These NFs often intensify yield forming attributes without compromising the final crop quality. Larger knowledge about NFs application is still lacking in agronomic academic literature. It is particularly relevant for soybean cultivation, given its importance in human nutrition, feed industry ...

This paper analyses the implementation of recent geospatial technologies to map and model underground natural gas networks in three dimensions, with a focus on the use of mobile LiDAR scanning systems. The research focuses on the Subcetate area in the municipality of Arad, a representative example for the technical-urban networks in western Romania. The main objective is to create a geospatial database (GIS) with a high degree of accuracy, which would include the information collected from the site about the route...

Background: This paper explores the use of artificial intelligence (AI) in optimizing rural tourism management, highlighting the potential of this technology in the sustainable development of rural communities. AI can contribute to the efficient management of tourist flows, resource optimization, and improving visitor experiences. Methods: The study presents a detailed bibliometric analysis of the existing literature, using relevant keywords extracted from the Web of Science Core Collection database. Moreover, AI ...

Within the core project called "Geomagnetism, a modern tool in space weather forecasting and rapid response to associated natural hazards for the protection of critical infrastructures and national air traffic security", we implemented a Web-GIS platform with ARCGIS Server, which can be viewed in an internet browser at: http://harti.igr.ro/masuratori_aeroporturi. The thematic layers in the application, at the level of the entire country, are the locations of magnetic declination measurements for all airports in Ro...

Floods are worldwide among the most significant natural hazards. They can result from various causes, including severe storms, intense or prolonged rainfall, and landslides. The damage they cause is substantial, both economically and in terms of human life and wellbeing. Modern technologies, particularly artificial intelligence (AI), offer wide-ranging opportunities in this domain. AI can help forecast the weather, rainfall amounts and intensity, and other variables influencing flood occurrence. When integrated in...

This research was conducted for six years, in experimental fields located in B-rzava Plain, West part of Romania. The purpose of this research was to observe if a mixture of manure and calcium carbonate can improve some fertility indicators of soil. The monitored soil fertility indicators were: pH, humus content and nitrogen index. The mixture applied on the experimental field contain 20 t/ha cow manure and 4 t/ha calcium carbonate, being distributed in the first experimental year and in the fourth experimental ye...

The authors of this paper review the main factors of management in general (planning, organization, leadership and control) and environmental management in particular (environmental impact assessment, environmental legislation, pollution control, resource conservation, sustainable development, waste and wastewater management), with a focus on pig farms and their characteristics (biosecurity and health, growth and reproduction and reproduction, housing and food and water management, feed and feed management facilit...

Currently, investment volumes in Latvia are declining and investors are less willing to invest. However, it is essential for regional development to create business agglomerations with a large number of different types of entrepreneurs. Business industrial and logistics parks are a modern solution. Over time, industrial parks have become industrialised cities because of the proximity of the park-s employees, municipalities and various social amnesties. This location reduces real estate cost, health care and educat...

Apple juices are already well-known and appreciated products, which under certain conditions can be enriched with vitamins, minerals and other nutrients, contributing to increasing nutritional intake as well as to completing some nutritional deficiencies. Such an approach often constitutes sustainable solutions from an economic and process point of view. Obtaining these new types of apple juices ensures the completion of their already known nutritional benefits with the therapeutic ones brought by the intake of ho...

Corrosion is one of the most important causes of failures of reinforced concrete building structures, reduces their service lifetime, reliability and increases the economic complexity of subsequent reconstructions and renovations of buildings. This paper is devoted to the investigation of aggressive environmental influences on building structures. The research is closely linked to long-term measured data of the Slovak Hydrometeorological Institute (SHMI), which are used to calculate corrosion losses per year and t...

Carrot pomace is considered a promising by-product due to its health-benefit nutrients such as fibers, vitamins, polyphenols, carotenoids, and minerals. Incorporating pasta with healthy ingredients such as carrot pomace could be a good idea to enhance its nutritional value. The aim of this study was to investigate the effect of carrot pomace on durum wheat flour dough rheological properties. In this study, carrot pomace from four varieties was used. Carrot pomace was incorporated at levels varying from 0 to 12%. D...

This study examines the influence of cutter geometry on cutting forces and rock destruction efficiency in drilling, with relevance beyond geological applications. We explored optimizing geometric parameters - attack angle (0--45-), cutting edge width, and profile shape (straight, wedge, radial) - to boost efficiency and cut energy use. Numerical simulations via SolidWorks finite element analysis (FEA) used a tetrahedral mesh (0.1-0.5 mm elements) and the Mohr-Coulomb criterion to model cutter interactions with roc...

This study evaluates the influence of dietary supplementation with royal jelly on growth dynamics in sterlet (Acipenser ruthenus), a species of significant interest in aquaculture. Throughout a controlled experimental period, juvenile sturgeons were fed diets containing varying concentrations of royal jelly and were monitored for key growth performance parameters, including weight gain, specific growth rate, average daily gain, and feed conversion ratio. The results revealed a significant impact of royal jelly sup...

ABSTRACT Fish and seafood represent some of the most nutritionally dense and well-balanced food sources, forming one of the largest and fastest-growing sectors in the global food market. Recent advancements in food science and technology have enabled innovative solutions to enhance the quality, extend the shelf life, and ensure the safety of fish products. The evolving fish and seafood market has spurred the development of novel products to meet increasing consumer demand for healthy, diverse, and convenient dieta...

The green economy is a concept that seeks to ensure sustainable development, in which economic growth is in sync with environmental protection. Innovative educational approaches can foster the knowledge and skills needed to build a sustainable economy. This article examines some of the most effective innovations in education that support the green economy. Project-based learning is an approach that allows students to work on real-world problems and cases. By participating in projects related to sustainable develop...

The growing amount of waste and the pressure to transition to a sustainable and circular economy create the need to modernize waste management through technological innovations. This article focuses on the analysis of selected innovative technologies and waste processing, namely plasma gasification, hydrothermal carbonization, chemical recycling of plastics, robotic sorting systems using artificial intelligence and biological processes such as enzymatic degradation of plastics. Based on a systematic literature sea...

Since the primary purpose of an education system as a whole is to provide education to students, this paper, as the first part of a larger study, is devoted to a detailed analysis of the size of general education schools, teachers and students who form the basis of the entire education system. The paper analyses up to date available almost 2800 data entries from Latvian National Education Information System about general education institutions, which are maintained by municipalities from 2019 - 2023. Statistical m...

The Fourth Industrial Revolution enables in depth assessment of technology prospects by systematising social, environmental, and other measurable indicators while sustaining economic growth. Although these categories can be integrated into a monetary framework, such unification fails to account for dependencies among resource costs, geographical variations, and business paradigms, thereby introducing significant uncertainties. Economic growth models have long attempted to incorporate social factors. Growth is a fu...

In Romania, Cirsium arvense (creeping thistle) has a high incidence in agricultural crops, approximately 70%, the development being largely influenced by climate but also by the inadequate technologies practiced. This study is an overview of the integrated management of the perennial weed Cirsium arvense in Romania. Therefore, it was done a review of the studies published in Romania, in order to highlight the predominant methods and whether or not cultural and biological measures are used. The methods used were bi...

Climate change intensifies concurrent drought and heat stress in viticulture across Central Europe. This study assessed vineyard ecosystem stress using integrated multi-parameter monitoring over 31 months (May 2023 November 2025; n=43,763 observations). A composite Ecosystem Stress Index (ESI) integrating Vapor Pressure Deficit (30%), depth-weighted soil water availability (40%), and soil temperature gradient (30%) was developed. The year 2023 exhibited healthy baseline (mean ESI=0.1375; only 1 stress day). The ye...

Blue-green infrastructure (BGI) is part of European policies to address climate change that has occurred in recent years. In Sandanski region, Bulgaria, data from the European Centre for Medium-Range Weather Forecasts (ERA5) show that since 1979, air temperatures have risen by 2.3 degrees Celsius, with an upward trend. Meanwhile, there is no permanent decrease in precipitation, but there are extreme events and alternating cycles of floods and droughts. BGI can mitigate climate change by cooling the effect of veget...

Integrating environmental and Earth sciences into education is vital for cultivating ecological literacy and fostering sustainable behaviour. Digital learning through serious educational games (SEG) offers an interactive, immersive environment that allows students to explore and understand complex environmental systems in a global context, in an engaging, dynamic, and risk-free manner. This paper focuses on the use of SEG to improve conceptual understanding of natural processes and climate responsibility. It outli...

Sustainable land use and resource planning are essential for reconciling resource extraction with environmental protection, particularly in mining regions. This study examines the integration of hydrological analysis into sustainable land-use planning, with a specific focus on the Bogdanka SA coal mine in Poland. The objective is to identify limitations in current hydrological methodologies and to propose enhancements that support more effective resource management. The paper reviews critical components of hydrolo...

The concept of sustainability has become a cornerstone in solving global environmental, social and economic problems. Its importance has grown rapidly due to climate change, resource scarcity and social inequality. Understanding the concept of sustainability has become important in various sectors and has led to significant changes in the activities of companies, the demand for specialists and their education. Sustainable development is a basic condition that affects the Latvian economy, the education system and a...

In the global context of the 2030 Agenda, the integration of Sustainable Development Goals (SDGs) in higher education has become essential for advancing societal, economic and environmental resilience. Universities play a key role in this process through their missions in education, research, governance and community engagement. This paper examines how Transilvania University of Bra?ov (UTBv) implements the SDGs, using a qualitative case study approach, based on the analysis of internal strategic documents, instit...

Smart cities represent an emerging model of sustainable urban development built on digital technologies that improve resource efficiency, urban management, and public safety. This study explores the integration of artificial intelligence (AI) into smart city systems with a focus on enhancing emergency preparedness and supporting long-term sustainability. The research identifies gaps in the structured use of AI tools within urban crisis management and evaluates current applications through qualitative analysis of A...

In recent years, there has been a global trend towards increasing distribution of electric vehicles. This has necessitated the installation and construction of charging infrastructure to meet the needs of a growing number of users, as well as providing additional electrical power capacity. Hybrid power systems are one of the solutions to the problems of providing electrical power ensuring sufficient electrical power supply. This study presents a conceptual model of an intelligent hybrid system designed to supply e...

A significant component of soil organic matter (SOM) is constituted by disintegrating plant residues containing particularly cellulose and lignin which are resistant to microbial decomposition. Yet, the degradation of lignin may begin already in the early stages of organic matter decomposition if there is a sufficient amount of available saccharides in the soil as these serve as a quick source of energy allowing the microorganisms to produce enzymes for lignin decomposition. The aim of this study was to verify whe...

While urban land use planning receives much attention in land management in Bulgaria, agricultural land use planning has been significantly neglected. Today, more than ever, effective and efficient land use planning is needed to address the global and local challenges, such as protecting prime agricultural lands for food production, achieving sustainable productivity gains, improving water use efficiency, reducing greenhouse gas emissions, etc. The objective of the paper is to review the international experience i...

Integrating Internet of Things (IoT) in poultry farming transforms livestock manage-ment and promotes climate resilience, namely in sub-Saharan Africa, where the rising demand for animal protein is challenged by climate variability and limited resources. This review examines how IoT enhances climate resilience, operational efficiency, and sustainability in African poultry systems. A systematic scoping review following PRISMA guidelines was conducted using databases such as Scopus, IEEE Xplore, Sci-enceDirect, Spri...

The Heat Transfer Coefficient (HTC, h) is critical for evaluating the thermal performance of Trombe Walls (TW), passive solar heating systems that utilize solar energy for space heating. This study analyzes convective and radiative HTC mechanisms on a TW absorber surface, emphasizing factors such as airflow patterns, surface roughness, temperature gradients, emissivity, and environmental conditions (solar radiation, ambient temperature, wind speed). Experimental and numerical methods were applied to quantify HTC f...

The paper presents the results of investigation of the process of leaching of scandium from chloride wastes generated in titanium production to optimize the parameters of extraction into solution. The effects of key factors, including solid-to-liquid ratio (S:L), hydrochloric acid (HCl) concentration, process duration, stirring speed and the influence of temperature on the degree of scandium extraction into solution were studied. Experimental results indicate that optimal conditions for maximum extraction are: S:L...

The accurate assessment of a ship-s dynamic behavior is essential for understanding its stability characteristics, particularly in response to free oscillations such as roll decay. This study presents the development and application of a compact, cost-effective inertial measurement system based on the Bosch BMX160 IMU sensor, integrated with a Raspberry Pi 4 single-board computer, for measuring ship model free oscillations both in water and in a controlled air environment. The system enables remote data acquisitio...

Old manor parks are generally considered as important features of historic heritage in European cultural landscapes. But these parks are not only historic monuments. Because of presence of veteran trees and other biological legacy (such as dead wood), historic manor parks can be biodiversity hot-spots in urbanized landscapes. This study present results from long-term comparison of bird diversity in large old manor park in Central Europe (Czech Republic). Based on bird species richness comparison between 1997 and 2...

Multi-enzymatic cascade reactions, that is, the integration of several biocatalytic transformations occurring simultaneously, offer a wide range of possibilities and new ways to synthesize products with high added value. Such systems improve biocatalytic processes by saving time and reducing waste, while being self-sufficient in terms of requirements for related factors. As a more environmentally friendly and sustainable alternative method for the production of chemicals and biological products increases in import...

Constructed wetlands provide a cost-effective and environmentally sustainable approach to wastewater treatment; however, their efficiency in phosphorus removal often remains insufficient to meet current discharge standards. Chemical precipitation using aluminium-based coagulants has been proposed as a promising solution. In this study, laboratory-scale columns were constructed to simulate French and Austrian types of constructed wetlands and operated in two experimental phases. During the first phase, wastewater w...

Anthropogenic induced changes in the Earth-s surface are commonly addressed as land use/land cover change. Activities such as agriculture, forestry, transport and house building use the land and change its natural state and functions. The impact of land-use change is associated with changes in the infiltration rate of the soil, soil texture and evapotranspiration thus affecting the hydrological response of watersheds. In this paper a study on the influence of land use changes on the hydrological regime of Osam riv...

The study is based on an assessment of the level of land disturbance by full-scale military operations and the emergence of land use deficits in certain territories. It has been determined that military operations cause disturbance of the earth's surface in the form of mechanical, physical and chemical changes in the soil, the negative consequences of which can be felt for decades. Territories that have been subjected to military operations become dangerous for the population for a long time and unattractive for i...

Occupational health and safety and the physical safety of population are key areas of legal regulation at the international, European as well as national levels. This article analyses the legal frameworks that govern sustainable development and resource management in these areas, highlighting their importance for protecting workers and the public from physical, chemical, biological and cyber threats. International legal standards, such as International Labour Organisation (ILO) conventions and European Union direc...

In the post-war period, the priority issues that will need to be addressed are the reconstruction of rural areas and ensuring not only food security but also environmental safety. The article draws attention to the fact that ensuring sustainable development of rural areas should become a priority task of the government of Ukraine, especially in the post-war period. The priority of such a task should be comprehensive and has to include: poverty alleviation, restoration of the state of the environment, ethno-cultura...

Global climate and ecological crisis urge to decarbonazation of EU through sustainable low carbon alternatives to achieve carbon neutrality by 2050. Within this context, Power-to-Hydrogen-to-Power (P2H2P) technologies are playing an essential role in the energy transitions boosting the energy system flexibility, facilitating the integration of renewable energy sources and providing a promising pathway for long-term energy storage and clean fuel supply. Driving forces behind this research are the imperative raise t...

This study evaluates the environmental performance of two CNC machining strategies-three-axis and five-axis milling-used in the production of an aluminum wheel upright for a Formula Student vehicle. A process-based gate-to-gate Life Cycle Assessment (LCA) was carried out using Sphera GaBi software and the Ecoinvent 3.9.1 database, focusing exclusively on impacts associated with the manufacturing technologies. The analysis included detailed measurements of electricity consumption, machine time, machining operation ...

Lake Liepaja, a shallow lagoon-type lake located in the temperate climate zone, is affected by persistent ecological pressures, including nutrient enrichment, sediment contamination, and climate variability. This study presents an overview of long-term water quality dynamics based on monitoring data from the Latvian Environment, Geology and Meteorology Centre (2001-2023), interpreting key physical and chemical indicators as evidence of broader ecological trends. Multi-year records of physicochemical parameters wer...