Search Results (4,990)

Aggregates are the second-most consumed product in the world after water. This geological resource is used as building and construction material, and its production in quarries and delivery to customers generates several environmental problems. Their transport from quarries to consumption points, almost entirely done by truck, also generates impacts such as an increase in traffic and noise and the emission of greenhouse gases and other pollutants. Transportation and storage of goods account for 15% of greenhouse gas emissions in Europe and will increase significantly by 2050. To mitigate this, the European Union suggested shifting 30% of long-distance road freight to cleaner alternatives, such as rail or waterborne transport. This approach neglects the enormous volume of short-distance freight movement and its impact on achieving the goal of reducing greenhouse gas emissions. In this study, the hypothesis to test is whether the use of an intermodal rail/road transport mode, instead of just roads, for the transport of some products can help reduce global CO₂ emissions even for short distances. To test this, this study investigates the carbon emissions (and transport cost reduction) generated by rail/road intermodal aggregate transport for short distances in the Madrid region (Spain), rather than the currently used direct truck transport. An analysis of variables, such as aggregate supply, demand locations and amounts, and road and rail networks, using a geographical information system provides the associated carbon emissions of the different transport alternatives. To obtain a reduction in CO₂ emissions, this study proposes the establishment of intermodal transfer facilities near consumption centers, where materials are primarily transported by rail, with road transport limited to the final delivery to consumption areas. The results anticipate a notable decrease in carbon emissions in aggregate transport and allow the establishment of more efficient and environmentally friendly rail/road intermodal transport that would help to meet the goals of reducing climate change while making the use of aggregates more environmentally friendly. Full article

Global warming and climate change, primarily driven by human activities, with agriculture playing a significant role, have become central topics of scientific research. Livestock production, especially enteric fermentation, is a major source of greenhouse gas emissions, making it a focal point for both climate change adaptation and mitigation strategies. Both the European Union (EU) and Least Developed Countries (LDCs) are highly dependent on agriculture, particularly livestock, which plays a key role in their economic growth. In developing countries, livestock systems are evolving rapidly due to various factors, while in the EU, the livestock sector remains economically and socially significant, representing 36% of total agricultural activity. This study explores the environmental impact of enteric fermentation in livestock production, alongside the economic value it generates in both the EU and LDCs. The analysis utilizes a Bayesian Vector Autoregression (BVAR) methodology, which provides a more robust performance compared to traditional models like Vector Autoregression (VAR) and the Vector-error Correction Model (VECM). This research identifies significant relationships between the variables studied, with structural breaks quantified to reflect the impact of initiatives undertaken in both regions. Interestingly, the results challenge the environmental Kuznets curve, which hypothesizes an inverted U-shaped relationship between economic growth and environmental degradation, as proposed by Stern. This suggests that stronger economic incentives may be necessary to enhance policy effectiveness and promote eco-efficiency. The distinctive characteristics of livestock production in the EU and LDCs should be carefully considered when shaping agricultural policies, with a strong emphasis on farmer education as a critical factor for success. Additionally, corporate management practices must be tailored to address the unique needs, strengths, and challenges of livestock businesses in these two diverse regions. Full article

The introduction of antibiotics in the beginning of the 20th century was one of the most important scientific breakthroughs in history. However, in recent decades, the growing threat of antimicrobial resistance (AMR) has shown the limitations of the current research and development programs for new antimicrobial drugs. In the last decade, 20 antibiotics, 7 β-lactam/β-lactamase inhibitor (BL/BLI) combinations and 4 non-traditional antibacterial drugs have been launched worldwide. Methods: This study aimed to assess the time to patient access for new antibacterial drugs in countries in the European Union and the European Economic Area (EU/EEA). Time differences in marketing authorization from the U.S. Food and Drug Agency (FDA) and the European Medicines Agency (EMA) were also described, as well as the availability of each drug in the countries in the EU/EEA according to the national competent authorities. Results: Substantial differences between countries were observed, with no or only one new drug available in some countries. Conclusions: Improving pricing and reimbursement timelines and fostering collaboration between national health authorities and market authorization holders can enhance timely and equitable patient access to new antibacterial treatments in Europe. Equitable and sustainable access to antibacterial drugs is a cornerstone in the battle against AMR. Full article

The United Nations 2030 Agenda defines the priorities and aspirations for global development based on seventeen ambitious sustainable development goals encompassing economic, environmental, and social dimensions. Tourism plays a vital role in the list of actions for the people and the planet. While the tourism industry drives economic growth, its environmental and social impact is equally high. Sustainable tourism aims to reduce the damage caused by the tourism industry, protect communities, and guarantee the industry’s long-term future. These changes require tourists’ collective and concerted effort. The question arises whether tourists are willing to be more demanding about sustainability when looking for a destination. This study uses artificial intelligence to classify a new trend in European citizens’ search for sustainable destinations and to generate intelligent recommendations. Using data from the Flash Eurobarometer 499, we use a tree-based algorithm, random forest, to obtain intelligent citizens classification systems supported by machine learning. The classification system explores the predisposition of citizens to contribute to the three pillars of sustainability when choosing a destination to visit based on gender, age, and the region of living. We found that European citizens place little emphasis on the social sustainability pillar. While they care about preserving the environment, this competes with the cultural offerings and availability of activities at the destination. Additionally, we found that the willingness to contribute to the three pillars of sustainability varies by gender, age, and European region. Full article

Though indium has been removed from the fifth list (2023) of critical raw materials for the European Union list of critical metals, its recovery is still of paramount importance due to its wide use in a series of high-tech industries. As its recovery is closely associated with zinc mining, the recycling of In-bearing wastes is also of interest, for both profitable and environmental reasons. With unit operations (in hydrometallurgy and pyrometallurgy or extractive metallurgy) playing a key role in the recycling of indium, the present work reviewed the most recent innovations (2024) regarding the use of these operations in the recovery from this valuable metal from different solid or liquid wastes. Full article

Background and Objective: In this study, we aimed to identify the factors that could impact the Stress-Related Growth Scale (SRGS) questionnaire administered to patients. Materials and Methods: Participants were asked to complete a written SRGS questionnaire (a translated and approved version in Romania) at varying time intervals relative to the traumatic event. The questionnaire was developed in accordance with legal regulations of the World Health Organization and the European Union for research involving human subjects for medical purposes. It took approximately 15 min to complete. The questionnaire was filled out by the patient or their legal guardian/parent for minors between January 2021 and January 2022. Results: The findings revealed the individual dimensions in the context of the traumatic impact, and the subsequent conclusions could be applied to a larger group with similar traumatic experiences. It is recognized that psychosomatic pathologies can hinder posttraumatic rehabilitation, leading to slower and more challenging recovery. Conclusions: Posttraumatic stress disorder often manifests as chronic development of symptoms characterized by reexperiencing traumatic scenes, avoidance behaviors, negative alterations in cognition, and heightened arousal. Posttraumatic stress disorder (PTSD) is a prevalent, persistent, and psychologically debilitating syndrome that can significantly impair an individual’s ability to cope with life. The etiology and manifestation of this disorder present numerous challenges due to the complexity of defining and diagnosing these conditions. The distribution of men and women affected by posttraumatic stress disorder varies across different sources and cannot be simplified into one explanation. While sex distribution is an important factor, it is not the sole determinant for understanding the various aspects of these disorders. The diversity of stressors has been shown to correlate with changes in SRGS scores, including subtle emotions like shame and guilt, which contribute to the moral injury resulting from trauma. Full article

Türkiye is making great efforts to generate new projects within the scope of the “Türkiye Century” strategy, with the aim of increasing its effectiveness in the international community and the welfare of its citizens. In this respect, it is of great importance to conduct new studies and develop suggestions to further increase the effectiveness of new projects. This study seeks to provide a solution to the problems in politics, education, economy, public administration, justice, and corruption identified and reported by international organizations such as the OECD, the European Union, and the public institutions of the Republic of Türkiye, by associating them with the Society 5.0 strategy. The study aims to test the applicability of Society 5.0 in solving these problems through structural equation modeling using niche innovation and convergent stakeholder theories. In the light of the data obtained, it is realized that Society 5.0 has an effect on all the other variables except for one and the policy variable mediates this situation. In this regard, in accordance with the findings, it can be stated that Society 5.0 can be regarded as a significant alternative for solving the problems experienced on a suitable political basis. Full article

The article analyzes the impact of selected operational parameters of internal combustion engine vehicles on CO₂ emissions. The study was preceded by a detailed analysis of the issues related to CO₂ emissions in the EU, with a focus on Poland, where the tests were conducted. The key scientific assumption is that individual vehicle users’ behaviors significantly impact global CO₂ emissions. Daily use of private vehicles, driving style, and attention to fuel efficiency contribute to cumulative effects that can drive the transformation toward more sustainable transport. Therefore, the study was conducted using real-time empirical data obtained from the vehicles’ OBD (On-Board Diagnostics) diagnostic systems. This approach enabled the creation of a diagnostic tool allowing each vehicle user to assess CO₂ emissions and ultimately manage its levels, which is the biggest innovation of the work. Two levels of CO₂ emissions were identified as categorical variables in the model, considered either ecological or non-ecological from the perspective of sustainable transport. The CO₂ emission threshold of 200 g/km was adopted based on the average age of vehicles in Poland (14.5 years) and Regulation (EC) No 443/2009 of the European Parliament and of the Council. Three models of logistic regression dedicated to different driving cycle phases—starting, urban driving, and highway driving—were proposed and compared. This study demonstrated that during vehicle starting, the most significant factors influencing the probability of ecological driving are vehicle velocity, relative engine load, and relative throttle position, while for the other two types of movement, engine power and torque should also be considered. The logistic regression model for vehicle start-up obtained a value of sensitivity at about 82% and precision at about 85%. In the case of urban driving, the values of the discussed parameters reach significantly higher levels, with sensitivity at around 96% and precision at about 92%. In turn, the model related to highway driving achieved the highest values among the created models, with sensitivity at around 97% and precision at about 93%. Full article

This paper investigates the optimization of insulation thickness with respect to the integration of renewable energy systems in residential buildings in order to improve energy efficiency, maximize the contribution of renewables and reduce life cycle costs. Using the DesignBuilder and EnergyPlus software, this study models a representative two-story residential building located in Athens, Greece. The building envelope features extruded polystyrene thermal insulation and windows with unplasticized polyvinyl chloride frames and low-e glazing. Six scenarios with hybrid renewable energy systems are analyzed, including air- and ground-source heat pumps, solar thermal systems and a biomass fired boiler, so as to assess energy consumption, economic feasibility and internal air temperature conditions. A Pareto-fronts-based optimization algorithm is applied to determine the optimal combination of insulation thicknesses for the walls, the roof and the floor, focusing on minimizing the life cycle cost and maximizing the percentage of renewable energy utilized. The results demonstrate that scenarios involving biomass boilers and solar thermal systems, both for heating and cooling, when combined with reasonable thermal protection, can effectively meet the recent European Union’s directive’s goal, with renewable energy systems contributing more than 50% of the total energy requirements, whilst maintaining acceptable internal air temperature conditions and having a life cycle cost lower than contemporary conventional buildings. Full article

This study examines the structural shifts in primary energy production across European countries from 1990 to 2022, focusing on changes in energy sources and their implications for energy security and sustainability. Set against a backdrop of evolving geopolitical landscapes, economic pressures, and climate policies, including significant recent impacts such as the conflict in Ukraine, this research highlights the critical importance of a stable and diversified energy supply. The analysis utilizes the k-means clustering method, examining countries for which data are available in the Eurostat database and considering primary energy sources as defined by the Standard International Energy Product Classification (SIEC), including solid fossil fuels, natural gas, crude oil, nuclear energy, renewable energy sources, peat, and non-renewable waste. By categorizing European nations into clusters based on their energy production profiles, the study reveals substantial transitions from fossil fuel-based systems to those increasingly dominated by renewable energy sources. While some countries have made significant progress in integrating renewables, others remain heavily dependent on traditional energy sources such as coal and natural gas. The findings underscore the growing role of natural gas as a bridge fuel and the relatively stable contribution of nuclear energy in certain regions. A key outcome is the observed disparity between energy production and consumption across Europe, with many large economies facing a persistent deficit in domestic energy production, resulting in a high reliance on energy imports, particularly of natural gas and oil. This dependency poses significant challenges to energy security, especially given recent geopolitical disruptions and market fluctuations. The paper also discusses the environmental implications of these energy trends, emphasizing the vital role of renewable energy in achieving the European Union’s decarbonization goals. Full article

The transport sector heavily relies on the use of fossil fuels, which are causing major environmental concerns. Solutions relying on the direct or indirect use of electricity through e-fuel production are emerging to power the transport sector. To ensure environmental benefits are achieved over this transition, an accurate estimation of the impact of the use of electricity is needed. This requires a high temporal resolution to capture the high variability of electricity. This paper presents a previously unseen temporal analysis of the carbon intensity of e-fuels using grid electricity in countries that are members of the European Network of Transmission System Operators (ENTSO-E). It also provides an estimation of the potential load factor for producing low-carbon e-fuels according to the European Union legislative framework. This was achieved by building on top of the existing EcoDynElec tool to develop EcoDynElec_xr, a python tool enabling—with an hourly time resolution—the calculation, visualisation, and analysis of the historical time-series of electricity mixing from the ENTSO-E. The results highlight that, in 2023, very few European countries were reaching low carbon intensity for electricity that enables the use of grid electricity for the production of green electrolytic hydrogen. The methodological assumptions consider the consumption of the electricity mix instead of the production mix, and the considered time step is of paramount importance and drastically impacts the potential load factor of green hydrogen production. The developed tools are released under an open-source license to ensure transparency, result reproducibility, and reuse regarding newer data for other territories or for other purposes. Full article

The role of the media is key in mediating civil society and its political representatives in EU institutions. In this context, this paper aims to describe the representation of the European Commission, one of the EU’s most important institutions, and its leaders by two leading Spanish newspapers. In order to address this objective, an automated content analysis was carried out on 13,340 news items published between 6 June 1976 and 15 February 2024 in El País (social democratic media) and ABC (conservative, monarchist media). The sample was subjected to a sentiment analysis as well as topic modeling. The latter method made it possible to identify five predominant issues on the agenda: Economy, Foreign Affairs, Internal Politics, Spanish Politics, and the Future of the EU. The average sentiment, which is close to neutral, has tended slightly toward the negative over the years, although the current president, Ursula von der Leyen, has the highest rating of all the leaders studied. Both El País and ABC provide more negative coverage of the EU when leaders of their ideological opposition govern, a phenomenon that can weaken the European model and encourage political drifts with consequences that are difficult to predict in the medium term. Full article

The corrosion of steel rebar embedded in concrete under marine conditions is a major global concern. Therefore, it needs a proper corrosion mitigation method. Various types of corrosion inhibitors are used to mitigate the corrosion of steel rebar in chloride-contaminated concrete; however, selecting the appropriate inhibitor and determining its optimal concentration remains a concern. Therefore, in the present study, three types of inhibitors—calcium nitrite (CN: Ca(NO₂)₂), N,N′-dimethyl ethanol amine (DMEA: (CH₃)₂NCH₂CH₂OH), and L-arginine (LA: C₆H₁₄N₄O₂) in three different concentrations, i.e., 0.3, 0.6 and 1.2 M—were compared with a control (without inhibitor, i.e., blank) sample to determine the optimum concentration of the inhibitor for corrosion resistance performance evaluation of reinforcement bars immersed in 0.3 M NaCl-contaminated concrete pore (NCCP) solution for various durations. The corrosion resistance properties were assessed using open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) with immersion duration, and potentiodynamic polarization (PDP) after 168 h of exposure. The results showed that the CN inhibitor performed exceptionally well (corrosion inhibition efficiency greater than 97%) in terms of corrosion resistance. However, due to its hazardous nature and its ban in the U.S. and European Union, CN cannot be used in construction. In comparison, while DMEA showed some effectiveness, LA performed better and is also eco-friendly. The corrosion resistance efficiency of samples containing 0.6 M LA remains above 97% even after 168 h of immersion in the NCCP solution. This efficiency is consistent throughout the entire immersion period, from 1 h to 168 h. Therefore, it is recommended that LA be used as a corrosion inhibitor for steel reinforcement bars instead of CN, particularly in chloride-contaminated concrete, as it is both effective and safer than CN. Full article

The outbreak at the end of February 2022 of the Russian invasion of Ukraine—and the Russian–Ukrainian hostilities that began in 2014 with the Euromaidan—has led to numerous dramatic episodes from both a humanitarian and an informative perspective. In this context, social media have been filled with rhetoric and narrative mechanisms, both from civil society organisations and from European media and institutions, in their eagerness to define their position within the dialectical battle. This research aims to address organisational communication in the European Union during the first year after the invasion, taking as its object of study the publications of four institutional bodies: European Commission, European Parliament, European Council, and European External Action Service. For this purpose, a content analysis of tweets was carried out, as well as in-depth interviews with specialised actors in institutional communication and disinformation at the EU level. Overall, the results show that the parallel narrative of the Commission, the Parliament, the Council, and the EEAS has been quite similar and lacks significant divergences, reflecting coherence and coordination in the communication strategies around the Ukrainian war, although there are interesting findings on the interaction of the institutions with the media and other civil society actors in communicating this international crisis via social media. Full article

This article examines the challenges posed by national legislative frameworks in the European Union Member States regarding the management of publicly funded research and development (R&D) projects. Taking the case of Spain and its General Subsidies Act as an example, this study analyzes 55 R&D funding calls published by the Spanish Central Administration in 2021 and 2022. This research identifies key challenges associated with change management in these projects. This research performed a detailed review of relevant legislation and its application to R&D projects, alongside an analysis of regulatory bases making use of a flexibility index (FI) to assess the adaptability of grant conditions. Also, quantitative methodologies like Pearson’s correlation coefficient and principal component analysis were employed. The findings reveal that flexibility in project management, particularly concerning changes in scope, budget, and timeframes, is limited due to the rigidity of the legal framework. This lack of flexibility means a significant challenge for effective project execution, which inherently requires adaptability to manage uncertainty. This research suggests that future reforms should prioritize greater legal flexibility to improve the efficiency and success of publicly funded R&D initiatives. These findings contribute to the broader understanding of how regulatory constraints impact innovation management. Full article