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Institutional and Policy Barriers to GIS-Based Waste Management: Evidence from Rural Municipalities in Vhembe District, South Africa
No full textMunicipal solid waste management (MSWM) remains a critical environmental governance challenge in rural and peri-urban regions of the Global South, where service delivery gaps exacerbate illegal dumping and public health risks. Geographic Information Systems (GIS) are increasingly promoted as decision-support tools to improve waste collection efficiency and environmental monitoring; however, their adoption in resource-constrained municipalities remains limited. This study investigates the institutional and policy barriers shaping GIS readiness in four rural municipalities within South Africa’s Vhembe District. Using a qualitative case-study design, semi-structured interviews were conducted with 29 municipal officials across managerial and operational levels, complemented by 399 community responses to an open-ended survey question. Thematic analysis, guided by Institutional Theory and the Technology Acceptance Model (TAM), identified five interrelated themes: waste production and disposal behaviours, collection and infrastructure constraints, institutional and operational challenges, policy and standardisation gaps, and technology readiness. The findings reveal that weak service reliability, fragmented governance structures, limited human and financial capacity, and inconsistent policy enforcement collectively undermine GIS adoption, despite its high perceived usefulness among officials. The study demonstrates that the effectiveness of GIS as an environmental management tool is contingent on institutional readiness rather than technological availability alone and highlights the need for integrated reforms in service delivery, institutional capacity, and policy implementation to enable GIS-supported sustainable waste management
State-of-Charge Estimation of Lithium-Ion Batteries Based on GMMCC-AEKF in Non-Gaussian Noise Environment
No full textTo improve the accuracy and robustness of lithium-ion battery state of charge (SOC) estimation, this paper proposes a generalized mixture maximum correlation-entropy criterion-based adaptive extended Kalman filter (GMMCC-AEKF) algorithm, addressing the performance degradation of the traditional extended Kalman filter (EKF) under non-Gaussian noise and inaccurate initial conditions. Based on the GMMCC theory, the proposed algorithm introduces an adaptive mechanism and employs two generalized Gaussian kernels to construct a mixed kernel function, thereby formulating the generalized mixture correlation-entropy criterion. This enhances the algorithm’s adaptability to complex non-Gaussian noise. Simultaneously, by incorporating adaptive filtering concepts, the state and measurement covariance matrices are dynamically adjusted to improve stability under varying noise intensities and environmental conditions. Furthermore, the use of statistical linearization and fixed-point iteration techniques effectively improves both the convergence behavior and the accuracy of nonlinear system estimation. To investigate the effectiveness of the suggested method, experiments for SOC estimation were implemented using two lithium-ion cells featuring distinct rated capacities. These tests employed both dynamic stress test (DST) and federal test procedure (FTP) profiles under three representative temperature settings: 40 °C, 25 °C, and 10 °C. The experimental findings prove that when exposed to non-Gaussian noise, the GMMCC-AEKF algorithm consistently outperforms both the traditional EKF and the generalized mixture maximum correlation-entropy-based extended Kalman filter (GMMCC-EKF) under various test conditions. Specifically, under the 25 °C DST profile, GMMCC-AEKF improves estimation accuracy by 86.54% and 10.47% over EKF and GMMCC-EKF, respectively, for the No. 1 battery. Under the FTP profile for the No. 2 battery, it achieves improvements of 55.89% and 28.61%, respectively. Even under extreme temperatures (10 °C, 40 °C), GMMCC-AEKF maintains high accuracy and stable convergence, and the algorithm demonstrates rapid convergence to the true SOC value. In summary, the GMMCC-AEKF confirms excellent estimation accuracy under various temperatures and non-Gaussian noise conditions, contributing a practical approach for accurate SOC estimation in power battery systems
A One Health Perspective: Occurrence Study of Carbapenem-Resistant Bacteria and Other Emerging Pathogens from Recycled Wastewater Used in Agriculture
No full textRecycled wastewater is vital for the circular economy, especially on water-scarce islands. This study explored the presence of Carbapenem-Resistant Enterobacterales and other emerging pathogens in irrigation water on four Canarian Islands, applying a One Health perspective. Using membrane filtration and MALDI-TOF mass spectrometry, 69 bacterial isolates were identified. The findings revealed that 78% were Gram-negative bacilli like Pseudomonas aeruginosa, Acinetobacter spp., Enterobacteriaceae, etc., while 22% were Gram-positive bacteria, including Enterococcus spp. The main mechanisms of carbapenem resistance in Pseudomonas spp. and Acinetobacter spp. were oxacillinases, followed by metallo-β-lactamases (MBL). In Enterobacteriaceae, characterization of carbapenemase types was less frequent, with oxacillinase 48 (OXA-48) being the most prevalent. The detection of multidrug-resistant organisms in recycled wastewater highlights an urgent need for routine microbiological monitoring in water management to protect both public health and agricultural sustainability
The Suicidal Archive: From Di Benedetto’s Los suicidas to Guerriero’s Los suicidas del fin del mundo
No full textThis essay offers a comparative reading of Antonio Di Benedetto’s Los suicidas and Leila Guerriero’s Los suicidas del fin del mundo through the lens of the “suicidal archive.” Drawing on literary criticism, trauma studies, and biopolitical theory, it explores how both works transform suicide into a problem of representation, where writing functions as an aesthetic mediation against the chaos of reality. In dialogue with the ideas of Mbembe, De Martelaere, and Caruth, I argue that Di Benedetto and Guerriero move beyond the rational frameworks of scientific or journalistic discourse to probe the ethical and affective dimensions of suicidal acts. While Di Benedetto’s text renders repetition as a metaphysical and introspective structure, Guerriero’s transforms it into a collective, polyphonic archive of trauma. In both cases, literature emerges as a symbolic space of containment that, rather than closing off meaning, keeps the wound open. Ultimately, the essay concludes that the suicidal archive does not seek to explain or domesticate death but to inhabit its enigma—affirming writing as an act of resistance against silence and disappearance
Ancestral Sequence Reconstruction for Novel Bifunctional Glutathione Synthetase with Enhanced Thermostability and Catalytic Efficiency
No full textThe bifunctional glutathione synthase (GshF) is able to catalyze glutathione synthesis and is favored for industrial application due to its lack of product inhibition. However, its practical use is limited by moderate catalytic efficiency and poor thermostability. Here, we applied ancestral sequence reconstruction (ASR) to engineer a more robust ancestral GshF (Anc427) with thermal denaturation temperature of 56.2 ± 0.2 °C, representing an increase of 10.8 ± 0.2 °C over the probe enzyme (St-GshF). Additionally, Anc427 exhibited a thermal half-life (t1/2) of 3465.7 min at 40 °C, representing a 20-fold increase over that of St-GshF. Under optimal conditions (pH 7.0, 37 °C), Anc427 displayed a specific activity of 3.3 ± 0.02 U·mg−1, representing a 20% enhancement compared to St-GshF. Structural modeling and molecular dynamics simulations indicated that the improved stability can be attributed to increased structural rigidity in Anc427. These findings demonstrate that ASR effectively enhances both thermostability and catalytic activity of GshF, significantly advancing its potential for industrial biocatalysis
One Step Forward in Understanding the Mechanism of Action of Wood Vinegar: Gas Exchange Analysis Reveals New Information
No full textWood vinegar (WV), a by-product of woody biomass pyrolysis, is increasingly used in agriculture as a sustainable biostimulant, although its effects on plant stress resistance and underlying mechanisms remain poorly understood. Recent studies propose that WV may act through a eustress-based mechanism, defined as a mild and controlled stress that activates adaptive physiological responses and enhances plant performance without causing structural or metabolic damage. This study investigated the physiological and biochemical effects of WV on strawberry plants grown under three water-deficit stress levels [no stress (NS), moderate stress (MS), and high stress (HS)] and treated with WV either via fertigation (0.5% v/v, WV1) or foliar spray (0.2% v/v, WV2). Gas exchange parameters (A, gsw, E, Ci, WUE), total chlorophyll content, and nutrient balance ratios (Fe/Mn and K/Ca) were measured after a three-month growth period. PERMANOVA revealed significant effects of both WV and water-deficit stress, as well as their interaction, on most parameters. Under NS and MS conditions, WV reduced A, gsw, E, and Ci while increasing WUE, indicating enhanced water-use efficiency and improved physiological adjustment to water limitation. Chlorophyll content remained stable, demonstrating preserved photosynthetic integrity. Nutrient ratios further supported a controlled ion rebalancing associated with adaptive stress responses under NS and MS, whereas HS conditions indicated the onset of distress. Overall, the data demonstrate that WV enhances plant stress resistance primarily by inducing eustress-mediated physiological regulation rather than by directly stimulating growth
Antimicrobial Properties of Analogs of Dimeric A-Type Proanthocyanidins in Food Matrices
No full textPolyphenols with antimicrobial and antibiofilm properties are gaining popularity due to their natural origins and relatively safe nature, and they have met the interest of the food industry because of their possible applicability as food preservatives. We have investigated the effect of different analogs of dimeric A-type proanthocyanidins (PACs) on four food matrix models, including unprocessed meat, fish, vegetables and dairy products previously contaminated with susceptible food pathogens. The best effects were achieved when cherry tomato was used as the food matrix for all the target bacteria (Staphylococcus aureus CECT 828, Listeria innocua CECT 910 and Bacillus cereus UJA27q) and for both temperatures tested (6 and 25 °C). Moreover, several combinations of these analogs also showed synergistic effects, mainly on S. aureus CECT 828, which may allow these antimicrobials to be used at lower levels in food matrices, which would promote their sensory acceptability. However, further studies should be conducted next to understand the mechanisms of these synergistic activities between the phenolic compounds against foodborne pathogens, as well as to ensure the absence of toxic effects when used as food preservatives
Chronic Pain and Biopsychosocial Correlates in Rural Filipino Adults: A Cross-Sectional Secondary Analysis
No full textBackground: Chronic pain is a leading contributor to disability worldwide, yet population-based data from rural and medically underserved settings remain limited. Evidence describing the biopsychosocial correlates of chronic pain in rural Filipino communities is particularly scarce. Methods: We conducted a secondary analysis of cross-sectional data from the I-HELP-FILIPINO community cohort, collected between January and June 2017. Participants included 909 adults aged 18–93 years who voluntarily attended barangay clinic days in rural Philippine communities. Pain severity was assessed with standardized self-report tools. Sociodemographic, psychosocial, sleep, and functional health factors were examined using bivariate analysis and hierarchical linear regression. Results are shown with 95% confidence intervals. Results: Chronic pain was very common, affecting 83.8% of participants, with 5.6% experiencing severe pain. In multivariable models, psychosocial distress, sleep issues, and reduced physical functioning were significantly linked to increased pain severity, while demographic factors contributed minimally to the variance. Most of the explained variance in pain outcomes was accounted for by psychosocial and clinical variables. Conclusions: In this rural Filipino cohort, chronic pain was strongly associated with modifiable psychosocial, sleep, and functional health factors. Focusing on community-based and culturally tailored interventions can inspire hope and empower healthcare professionals and policymakers to tackle these issues more effectively
Transformative Urban Resilience and Collaborative Participation in Public Spaces: A Systematic Review of Theoretical and Methodological Insights
No full textUrban resilience has emerged as a critical paradigm for addressing the intertwined challenges of climate change, rapid urbanization, and social inequality, positioning green public spaces as catalysts for social, ecological, and institutional transformation. This article presents a systematic review conducted under the PRISMA 2020 guidelines, examining how collaborative and community participation influenced transformative urban resilience in green public spaces between 2021 and 2025. A total of 6179 records were initially identified across ScienceDirect and MDPI (last search: July 2025), of which 26 empirical studies met the inclusion criteria (peer-reviewed, empirical, published 2021–2025). Methodological rigor was strengthened through the application of the Mixed Methods Appraisal Tool (MMAT, 2018) and confidence in qualitative evidence was assessed using the GRADE-CERQual approach, enhancing transparency and reliability. Data extraction and synthesis followed a theoretical-methodological coding framework, allowing for the comparison of participatory strategies, typologies of green spaces, resilience dimensions, and applied instruments. The results show that multi-actor co-management, co-design, and community self-organization are the most frequent participatory strategies, while urban green infrastructure, pocket parks, and urban gardens constitute the predominant spatial contexts. Socio-ecological and social-participatory resilience emerged as dominant theoretical perspectives, with qualitative and mixed-methods designs prevailing across studies. Evidence synthesis through GRADE-CERQual identified seven key pathways—multi-actor co-management, Nature-based Solutions, community-based actions, social equity, cultural identity, institutional innovation, and planned densification—each contributing differently to resilience dimensions. Overall, the findings highlight that transformative resilience depends on deep, inclusive participatory processes, multi-level governance, and the integration of social, ecological, and cultural dimensions. Despite the heterogeneity of designs and unequal data adequacy, this review confirms that transformative urban resilience is a co-produced process grounded in community action, ecological sustainability, and collaborative governance. Strengthening underexplored areas—technological innovation, cultural resilience, and standardized methodological instruments—is essential for advancing comparative research and practice
Ultrasound- and Colour Doppler-Guided WALANT Surgery for Insertional Achilles Tendinopathy: A Prospective Case Series on 53 Consecutive Patients
No full textBackground: Treatment of chronic painful insertional Achilles tendinopathy is known to be challenging. If non-surgical treatment does not give sufficient relief of symptoms, surgery may be indicated. Treatment with ultrasound (US)- and colour Doppler (CD)-guided wide-awake-local-anaesthetic-no-tourniquet (WALANT) surgery for insertional Achilles tendinopathy is a new approach with promising clinical results. This study aimed to evaluate clinical results of this new approach on patients suffering from insertional Achilles tendinopathy. Methods: Forty-eight consecutive patients with 53 symptomatic tendons (33 men with 34 tendons, mean age 49.3 ± 12.0 years; 14 women with 18 tendons, mean age 55.0 ± 7.4 years) and a duration of more than 12 months with painful insertional Achilles tendinopathy (including tendon, bursae, bone, and plantaris pathology) were included. US- and CD-guided WALANT surgery with removal of pathological bursae, bone, and tendons was used. Immediate weight-bearing loading was allowed, followed by a structured rehabilitation protocol for the first 12 weeks after surgery. VISA-A scores before and after surgery and a questionnaire that evaluated subjective satisfaction with the treatment and current activity level were used. Results: In total, 42/48 patients with 46/53 tendons participated in a 3-year follow-up (mean 34 ± 9 months) by an independent examiner; 39/42 patients with 43/46 tendons were satisfied (n = 37) with the treatment. The mean VISA-A score increased significantly from 41.9 ± 18.2 pre-operatively to 87.7 ± 18.2 post-operatively (p < 0.001). There were three surgical complications, two superficial wound infections, and one minor wound rupture. Conclusions: Patients who suffered from chronic painful insertional Achilles tendinopathy treated with US- and CD-guided WALANT surgery followed by immediate weight-bearing showed high patient subjective satisfaction rates and better functional scores at the 3-year follow-up with a low complication rate. This novel treatment approach warrants more study, including randomised trials comparing it against traditional surgical procedures according to Nunley and Keck and Kelly