Search Results (140)

Rapid detection of heavy metals is vital for monitoring surface water contamination and preventing environmental and health risks. Traditional detection methods for metals such as lead and copper often require sophisticated, costly instrumentation, limiting their use in routine analyses. To address this challenge, we developed a cost-effective fluorescence-based approach using semiconductor quantum dots (QDs) as nanosensors for metal ion detection. The QDs were synthesized directly in aqueous medium through a reflux-assisted process employing cadmium precursors, selenium, thioglycolic acid (TGA), and branched polyethyleneimine (PEI, Mw ~25,000) as stabilizing agents. Structural analysis revealed nanoparticles with diameters below 5 nm, spherical morphology, and a zinc blende (face-centered cubic) crystalline structure. Optical characterization by UV–Vis, photoluminescence (PL), and FTIR spectroscopy confirmed effective surface functionalization and strong quantum confinement. PEI-capped QDs exhibited enhanced colloidal stability and showed pronounced fluorescence quenching in the presence of Pb²⁺ ions, indicating high sensitivity and selectivity toward lead. Both TGA- and PEI-capped QDs also demonstrated moderate responses to Co²⁺ but negligible interaction with Sn²⁺, confirming ion-specific detection. Overall, this study demonstrates that surface-engineered QDs constitute a simple, accessible platform for selective detection of toxic metals, with promising applications in environmental monitoring and water quality assessment. Full article

Organic farming in the European Union is strongly shaped by Common Agricultural Policy (CAP) support, yet participation durability remains less examined than supported organic area or organic–conventional comparisons. This study assesses whether the length of participation in CAP-supported organic farming is associated with the organizational, production, and economic outcomes of organic farms in Poland. It applies a two-level approach: CAP support trajectories based on ARMA data for 2008–2025 and organic production duration based on Polish FSDN data for 2008–2022. A comparative analysis was conducted of the characteristics of the potential, organization, and economic situation of farms with varying levels of persistence within the organic farming support system. The frequent variation in the results obtained indicates the distinct characteristics of these groups of farms. The results show that organic farming in Poland is highly CAP-dependent and follows an unstable trajectory, with expansion up to 2012–2013, subsequent decline, and renewed growth after 2019. Longer participation is associated with differences in land resources, supported organic UAA, ANCs conditions, production organization, and livestock presence, indicating both adaptation and structural selectivity. FSDN data show that fully organic farms have lower land and labor productivity than conventional farms, but persistent fully organic farms achieve similar income per hectare when subsidies are included; without subsidies, their income remains much weaker. The findings indicate that the evaluation of organic farming support should move beyond beneficiary counts and certified organic area to include participation durability, production-system coherence, economic viability, and territorial embeddedness. More differentiated instruments are needed to strengthen durable, knowledge-intensive, and territorially embedded organic farming systems. Full article

The European Common Agricultural Policy (CAP) commits, in its Treaty foundation, to a fair standard of living for the agricultural community and, in its post-2014 architecture, to enhanced territorial cohesion. Yet repeated reform cycles have left the regional concentration of payments in many Member States visibly untouched. This paper asks why. We document the persistence of the territorial concentration of CAP transfers across the 13 Greek NUTS-2 regions over the 2010–2025 period (€47.65 bn cumulative), identify the CAP design mechanisms that mechanically reproduce it, and quantify how much of the observed aggregate stationarity is the artefact of compositional shifts versus genuinely offsetting forces. Using the universe of payment disbursements aggregated to 13 NUTS-2 regions and 51 NUTS-3 prefectures, we (i) test for σ- and β-convergence and Lorenz dominance, (ii) decompose Theil-T between and within regions and across Pillar I/Pillar II, and (iii) run four counterfactual simulations: Pillar II share held at its 2010 level, Article: 17-style capping at a 12–15% NUTS-2 ceiling, an Article: 29-style lower-tail floor, and a concentration-elasticity perturbation of the top region. The territorial distribution of support proves strikingly stable: standard inequality measures stay within a narrow band for sixteen consecutive years, and the ranking of regions barely changes, so formal convergence tests detect no narrowing over time. Three messages follow. First, this persistence is not accidental but built into the architecture of the CAP—through historical-reference entitlement values, the per-hectare logic of the Basic Payment Scheme, the geographic concentration of coupled support in cotton and livestock, and the cadastral fragmentation of the island prefectures. Second, the apparent stability conceals two large and opposing forces: the post-2014 expansion of Pillar II has reduced regional disparities, while a widening of the Pillar I distribution has increased them by almost the same amount, so aggregate stationarity reflects policy effort cancelling out, not the absence of it. Third, the instruments already in the CAP toolbox have real redistributive power: capping the largest region’s envelope and redistributing the surplus to lagging regions, or introducing a lower-tail floor, would roughly halve measured inequality. Therefore, the spatial concentration of CAP transfers in Greece is a designed equilibrium rather than an unsolved residual, and reducing it requires instruments that act asymmetrically on the top of the distribution. Full article

The synergistic transition toward digital transformation and green development has been widely regarded as a core pathway to achieving sustainable development in knowledge production. Using balanced panel data from 39 economies covering 2018–2024, this study employed a two-way fixed-effects model to examine the associations of the energy efficiency of digital infrastructure and the energy structure with carbon intensity (CI). The findings showed that: (1) Reductions in Power Usage Effectiveness (PUE) values were significantly associated with higher macro-level CI (coefficient = −2.1564, p < 0.05), which is consistent with the possibility of a rebound effect in the digital sector. Further, time-series discontinuity tests further suggested that the surge in AI computing power, especially in 2023–2024, may have coincided with a structural shift in this relationship (Chow test, p < 0.05). (2) A Panel Threshold Regression (PTR) identified an optimal renewable energy threshold at 59.82%. Crucially, the carbon rebound effect remained highly significant across both high and low green power regimes, demonstrating that supply-side energy transition alone cannot fully absorb the exponential carbon footprint of digital expansion. Furthermore, Instrumental Variable (IV-2SLS) and Placebo Break Tests confirmed the strict validity of these findings. (3) The emission-reduction benefits related to digital knowledge spillovers appeared to be subject to time lags and a possible energy lock in effect, while current environmental policies and carbon pricing mechanisms appear to impose insufficient constraints. This study provides a crucial quantitative framework for monitoring and evaluating the environmental sustainability of the ICT sector. By highlighting the limitations of pure supply-side greening and the necessity of absolute carbon caps, our findings offer integrated policy approaches to align the exponential growth of Generative AI with global sustainable development goals. Full article

Croatia’s accession to the European Union in 2013, followed by the abolition of the EU milk quota regime in 2015, exposed a structurally vulnerable dairy and beef sector to the dual pressure of single-market price convergence and post-quota production reallocation. While prior partial equilibrium modelling work on Croatian agriculture has assessed broad accession impacts and CAP reform scenario comparisons, no study has yet quantified the post-quota structural transition trajectory of the Croatian dairy and beef sectors with mechanism-level interpretation under the actually implemented CAP framework. This study simulates and analytically interprets the medium-term (to 2030) trajectories of the Croatian dairy and beef sectors using the AGMEMOD partial equilibrium framework, with an updated Croatian country-level model incorporating CAP 2023–2027 parameters, the post-quota dairy module specification, and historical data extending to 2024. Results indicate continued structural contraction: dairy cow numbers decline from 70.9 thousand head (2024) to 66.0 thousand head (2030); milk production falls 8.6% to 399.6 million litres; total cattle population declines by 4.0% and beef and veal meat production falls 11.0% to 33.1 thousand tonnes. Self-sufficiency rates deteriorate to 41% for milk and 51% for beef by 2030. The study contributes empirical evidence on small Member State post-quota adjustment dynamics, demonstrates that the current CAP 2023–2027 instruments are unlikely to reverse the contraction trajectory under baseline assumptions, and raises explicit food security implications for national agri-food policy. Full article

The inclusion of the cement industry into China’s national carbon emissions trading system in 2025 has fundamentally altered the compliance environment for high-emission enterprises, transforming carbon allowances from passive regulatory instruments into dynamic assets whose management directly affects financial performance. We develop a multi-scenario carbon asset management decision model tailored to the intensity-based benchmarking mechanism adopted by the national market. The model centres on the quota surplus-deficit variable EA4, which is computed from enterprise-level emission intensity relative to the industry benchmark, and decomposes the management problem into sequential selling and buying subproblems linked by coupled decision boundaries. A systematic parameter framework is constructed, and the model is applied to two cement enterprises—Enterprise A, a leading producer with a clear allowance surplus, and Enterprise B, a mid-tier producer operating near the benchmark boundary—through historical backtesting over the 2024–2025 period. Three principal findings emerge. First, the intensity benchmarking mechanism creates a dual-leverage effect whereby a 1.4% improvement in emission intensity (from 0.8112 to 0.8000 t/t) increases the quota surplus by 27%, a nonlinearity not captured by conventional compliance-cost models. Second, the model-driven strategy outperforms traditional experience-based approaches by 36.8% (baseline scenario, +95.20 vs. +69.58 MRMB) and 37.3% (risk scenario, −44.55 vs. −71.08 MRMB), with the improvement rate remaining consistent across both enterprises, suggesting that trading timing outweighs instrument selection in determining compliance cost outcomes. Third, dynamic CEA–CCER allocation captures an incremental 2.33 MRMB through the exploitation of a transient price inversion, a gain invisible to single-instrument strategies. Sensitivity analysis confirms that the relative advantage is robust to carbon price variations (±30%) and CCER offset caps (2–10%), while emission intensity and carry-over allowances represent the most consequential parameters for strategy direction, with EA4 crossing zero near the industry benchmark (I ≈ 0.85). The framework provides actionable decision support for cement and other high-emission enterprises navigating the unified carbon market, and contributes a quantitative methodology to the emerging field of environmental management accounting. This study contributes to Sustainable Development Goal 13 (Climate Action), Goal 7 (Affordable and Clean Energy), and Goal 9 (Industry, Innovation, and Infrastructure) by providing operational tools for decarbonisation in carbon-intensive industries. Full article

Intermediate crops, such as Brassica carinata and Camelina sativa, offer a promising pathway for expanding sustainable feedstock supply for advanced biofuels in Europe without competing with food and feed production. This study applies a competitive priority framework to assess the performance of intermediate crops in Italy and Spain, integrating agronomic, environmental, and regulatory dimensions. Using Member State-specific agroecological conditions, cost structures, and land-use profiles, the analysis identifies key challenges across land use and biomass-production stages and links them to measurable indicators and targeted optimisation strategies. Evidence from both experimental studies and modelling indicates that camelina can be seamlessly integrated into existing cropping systems without compromising crop yields or triggering soil carbon losses. These findings highlight the potential of intermediate crops to enhance soil health, to reduce erosion, and to stabilise yields under climate variability. This study also examines the policy conditions required to enable deployment, emphasising the need for region-specific crop calendars, digital traceability systems, and coherent implementation of RED III, CAP, ESCA, and CRCF frameworks. The distinction between volumetric and GHG-based targets is shown to be critical: intermediate crops perform strongly under GHG-based intensity reduction frameworks that reward soil carbon gains and sustainable cultivation. National instruments in Italy and Spain—including the Piano Strategico della PAC, Decreto Biocarburanti, Plan Estratégico de la PAC, and Real Decreto 376/2022—provide mechanisms for operationalising these strategies. Overall, the results demonstrate that intermediate crops can contribute meaningfully to both national and EU renewable energy, soil restoration, and climate mitigation objectives when supported by coherent agronomic and policy frameworks. Full article

The commercialization of Km 0 products has emerged as a strategic approach to strengthening rural economies, promoting sustainability, and countering depopulation in European territories. This study examines the motivations and perceptions of three key stakeholder groups—farmers, restaurant businesses, and public officials—regarding rural permanence and the role of Km 0 commercialization. Based on original survey data collected in Spain (2024), the research adopts a comparative perspective to identify convergences and divergences across these actors. Results show that farmers perceive Km 0 as vital for the survival of family farms and the preservation of territorial identity, while restaurants view it as a competitive advantage to ensure freshness and authenticity in gastronomy. Public officials frame Km 0 as a governance tool for rural revitalization and demographic stabilization. Despite these different orientations, all groups converge on valuing quality of life, contact with nature, and sustainability. Structural constraints such as inadequate infrastructure, limited digital connectivity, and generational renewal remain significant barriers across contexts. Situating these findings within the European Union’s Common Agricultural Policy (CAP) and the agroecological transition framework, this article suggests that Km 0 commercialization holds potential as an instrument for sustainability, territorial resilience, and food sovereignty in contemporary rural Europe, while acknowledging that the exploratory nature of this study calls for caution in extrapolating these findings beyond the specific contexts examined. Full article

Background: In an era characterized by rapid technological disruption and vocational uncertainty, Career Adaptability (CA) has emerged as a critical meta-competency for university students transitioning into the workforce. While the importance of CA is well-documented, the internal mechanisms that foster it remain under-explored. This research adopts a resource-based perspective to investigate how Mindfulness—a state of non-judgmental present-moment awareness—acts as a catalyst for career readiness. Specifically, this study examines a dual-mediation model, proposing that Mindfulness enhances Emotional Intelligence (EI) and Psychological Capital (PsyCap) (comprising hope, efficacy, resilience, and optimism), which in turn bolsters an individual’s capacity to adapt to changing career landscapes. By integrating these four constructs, the study provides a comprehensive framework for understanding how “being present” (Mindfulness) translates into “being prepared” (Career Adaptability) through the cultivation of emotional and psychological resources. Methods: The study collected data from 705 final-year students at Wollo University (male = 399 and female = 306). The study employed several well-established instruments: the Compound Psychological Capital Scale (CPC), the Five Facet Mindfulness Questionnaire (FFMQ), the Wong and Law Emotional Intelligence Scale (WLIES), and the Career Adapt-Abilities Scale (CAAS). These instruments were rigorously evaluated for their psychometric applicability within the Ethiopian context. Results: PLS-SEM analysis revealed: (a) direct and positive influences of mindfulness, PsyCap, and EI on career adaptability; (b) partial and positive mediation effects of PsyCap and EI in the mindfulness-career adaptability link; (c) a serial mediation effect of mindfulness through PsyCap and EI; and (d) the proposed model explained a substantial amount of variance in university students’ career adaptability. Conclusions: Despite its strengths, the study acknowledged certain limitations and discussed potential implications for enhancing career adaptability, highlighting the benefits of cultivating mindfulness. Full article

Globally, greenhouse gas (GHG) emissions have risen dramatically due to accelerated industrialization, excessive fossil fuel extraction, and agricultural activities, leading to global warming and ecosystem collapse. Achieving net-zero carbon emissions has therefore become a crucial global priority. Despite substantial international efforts, only a small number of countries have achieved carbon neutrality so far, with the majority aiming to do so by 2050 or 2060. Progress remains hindered by fragmented international coordination and inadequate integration of mitigation and adaptation co-benefits. However, agriculture is a major carbon emitter with significant mitigation potential. Attaining local carbon neutrality in agricultural landscapes is highly costly and strongly impacted by the spatial heterogeneity of GHG emissions and the diversity of available mitigation possibilities. This sector remains a major contributor to methane (CH₄) and nitrous oxide (N₂O) emissions, mainly through enteric fermentation and fertilizer use, and thus must be prioritized in global carbon neutrality strategies. Tactics such as improved livestock management, reduced use of synthetic fertilizers, conservation agriculture, afforestation, and renewable energy adoption can reduce emissions. These technical approaches should be supported by effective policy instruments, like carbon taxes, cap-and-trade schemes, low-carbon practice subsidies, and regulatory frameworks. Together, these measures can enable a transition toward long-term sustainability in agriculture by balancing emissions with removals through enhanced carbon sinks and credible offset mechanisms. Full article

This article analyses budgetary expenditures on agriculture and rural development in Poland in 2004–2025, i.e., after Poland’s accession to the European Union (EU). The study examines the size, real dynamics, and structure of total agricultural budget expenditures, including both national budgetary funds and EU funds allocated through the instruments of the Common Agricultural Policy (CAP). The analysis assesses the importance of EU budget funds for the level and structure of public expenditures on agriculture and rural development in Poland and attempts to determine the relationship between national and EU funds. The study employed time series analysis, structural analysis, and an analysis of the interdependence of variables (i.e., correlation and multiple regression). It was found that during the 22 years of EU membership, budgetary expenditures on agriculture, agricultural markets, and rural development in Poland were strongly determined by the volume of European funds, which accounted for the sharp increase in Poland’s agricultural budget compared with the pre-accession period. Compared with 2003 levels, expenditure rose by an average of 162% in nominal terms and 129% in real terms. EU funds also acted as a stabilising factor for the size of this budget throughout the analysed period. The proportion of European funds in Poland’s agricultural budget (PAB) rose sharply in the early years of Poland’s EU membership (2004–2011), increasing from 20.1% to 48.7%. However, it remained relatively stable in subsequent years, averaging 47.8%. Nevertheless, the appreciation of the Polish zloty against the euro caused the real value of these expenditures to decline, a trend that became apparent from 2017 onwards. This resulted in the need to increase expenditures from the national budget and led to national funds assuming a greater share of the financial burden of supporting agriculture. Between 2017 and 2025, the share of EU funds in the PAB fell from 43% to 33.1% (averaging 40.3%). The structure of expenditures within the CAP evolved over time as a result of changes in CAP priorities, although farmers’ income support as well as assistance for the modernization and improvement of the competitiveness of Polish agriculture remained key objectives. Full article

This paper examines how rural development support was associated with changes in Lithuania’s agri-food sector between 2000 and 2025 across successive Common Agricultural Policy (CAP) programming periods. Integrating complementary theoretical perspectives, the study assesses whether policy interventions were linked to structural transformation, market upgrading, partial innovation deepening, and sustainability-oriented change, or whether they primarily reinforced existing agri-food development paths. Methodologically, the research employs a quantitative, longitudinal, descriptive–analytical design, combining time-series analysis with comparative policy-cycle analysis. By tracing both incremental adjustments and more pronounced structural shifts over the 2000–2025 period, the paper provides an evidence-based assessment of how rural development support aligned with sectoral change. The findings suggest that the observed trajectory is most consistent with modernization, consolidation, and market upgrading, while innovation-led transformation appears more uneven and concentrated in downstream processing than in primary agriculture. The results contribute to debates on the calibration of rural development instruments and offer implications for future policy design in small open economies undergoing agri-food restructuring. Full article

Agriculture faces climate change, price volatility, and policy uncertainty. Because traditional agricultural insurance instruments often prove insufficient to address these risks, the Common Agricultural Policy (CAP) has introduced additional risk-management instruments such as mutual funds. The paper applies the Business Model Stress Testing framework to assess the robustness and adaptability of a mutual fund business model. The sustainability of the mutual model depends on building trust, enabling legislation, ensuring transparent governance, diversifying funding sources, agri-tech and alignment with support measures are the most critical factors. Within the current institutional framework, the lack of cooperative tradition and management capacities, the application of mutuals is hardly feasible for Croatia. Instead of a collective risk-sharing instruments approach, the paper suggests supporting the cooperation of stakeholders from different risk layers in harnessing digital technology and AI in developing enhanced agricultural risk management. Even though such an approach could be fuzzy too, it could bring impact faster and even contribute to the relevancy of the mutual model. The paper contributes to the literature on sustainable business model innovation in agriculture that enhances farm resilience in high-risk environments. This exercise might have policy implications for transition economies seeking to operationalize innovative tools in climate risk management and rural development. Full article

National legislative frameworks governing prescribing, pricing, reimbursement, and dispensing play a decisive role in shaping access to medicines. This study examines the financial availability of medicines in Bulgaria and North Macedonia through a comparative review of national pharmaceutical legislation, pricing mechanisms, reimbursement models, and digitalisation policies, assessed in relation to European Union standards. The findings indicate that access to medicines in both countries is shaped by the combined effects of multiple regulatory and financial instruments rather than by individual policy measures. Both systems apply strict control of prescribing and dispensing, external reference pricing, and positive reimbursement lists, reflecting alignment with international recommendations. However, significant differences in policy design lead to divergent access outcomes. Bulgaria’s more advanced digitalisation of prescribing and reimbursement, including mandatory electronic prescribing for selected therapeutic groups, enhances regulatory oversight and expenditure control but is associated with higher patient out-of-pocket expenditure, partly due to the application of the standard value-added tax on medicines. In contrast, North Macedonia combines lower taxation with capped patient co-payments, higher regulated pharmacy margins, and fixed pharmacy remuneration per prescription, contributing to improved financial affordability for patients while supporting pharmacy sustainability. Additional instruments, such as the Generics without Co-Payment List, further strengthen patient financial protection. The study provides comparative evidence relevant to pharmaceutical policy reforms and highlights the importance of balanced regulatory approaches that promote affordability, system sustainability, and equitable access to medicines. Full article

High-cost innovative anticancer drugs pose challenges for health systems in balancing timely patient access with long-term financial sustainability. In Thailand, reliance on Health Technology Assessment for reimbursement decisions may delay access, highlighting the potential role of Managed Entry Agreements (MEAs) as complementary policy instruments to manage uncertainty related to price, effectiveness, and use; however, MEA application remains limited and lacks an analytical framework for technique selection. This study used real-world data from Thammasat University Hospital to examine and compare the cost-saving performance of five MEA techniques—discount, free initiation treatment, utilization cap, conditional treatment continuation, and pay-by-result—across six high-cost anticancer drugs representing dominant uncertainty characteristics. Drug procurement costs were modeled over a 24-month horizon from the payer’s perspective, and one-way sensitivity analyses were conducted using ±10% variation in median progression-free survival. Free initiation treatment generated the highest cost savings across uncertainty types, followed by conditional treatment continuation, while utilization cap and discount produced more moderate savings. Pay-by-result demonstrated the lowest cost-saving potential. Sensitivity analyses confirmed the robustness of comparative rankings. Overall, the findings indicate that MEA performance varies according to dominant sources of drug-related uncertainty and support a more structured, context-appropriate approach to MEA selection to strengthen market access and value-based pricing in Thailand. Full article