Search Results (806)

This qualitative study investigates how graduate students engage with academic conferences as sites for professional development and identity construction. Grounded in academic socialization theory and employing an interpretive phenomenological approach, we conducted semi-structured interviews with 18 graduate students across diverse disciplinary fields in China. Reflexive thematic analysis revealed four distinct participation orientations: knowledge-seeking, competence-building, network-oriented, and identity-exploratory. Our findings illuminate how contemporary academic environments characterized by heightened competition, publish-or-perish pressures, and quantified evaluation systems create conditions of academic alienation, manifesting as disconnection from scholarly work, superficial collegial interactions, and weakened community belonging. Significantly, we identified conference participation as a transformative mechanism through which students counteract alienation by reclaiming meaning in scholarly labor, cultivating authentic academic dialogue, and reconstructing professional community ties. We propose an integrative conceptual framework illustrating the dynamic relationships among alienation, participation orientations, and transformative outcomes. These findings advance the theoretical understanding of academic socialization as an agentic, iterative process and offer practical implications for institutions, faculty advisors, and students seeking to support graduate student development in increasingly pressurized academic climates. Full article

The Special Education Center at National Taiwan Normal University implemented the PSMIGP (Problem-Solving and Multiple Intelligences for Gifted Preschoolers) program, designed to cultivate problem-solving abilities and multiple intelligences in gifted preschool children. The program included four cohorts with a total of 73 participants identified through multidimensional assessments in academic and artistic domains. Twenty years later, when participants were aged 23–27, their educational experiences and talent development were examined using a mixed-methods design through questionnaires and semi-structured interviews. Quantitative data were analyzed with SPSS and qualitative interviews were coded using NVivo 15; the data were validated through participant feedback and peer review. The results showed that nearly all the participants attended top universities in Taiwan or abroad, with a higher proportion than that in the general population receiving gifted education services. The consistent satisfaction reflected the influence of motivation, curriculum quality, supportive teachers, and access to diverse learning opportunities. Talent development resulted from dynamic, multilevel interactions—social, personal, cultural, and task-related—rather than innate ability alone. Full article

The agronomic performance and quality of different strawberry (Fragaria x ananassa) varieties produced in Santiago del Estero, Argentina, were studied. The following varieties were evaluated in 2023 and 2024 under semi-forced cultivation and bioinputs: Rociera (RO), Frontera (FR), Sahara (SH), Savana (SV), and Sabrina (SB). The crop performance was evaluated through yield production, and fruit quality was determined through titratable acidity (TA), soluble solids (SSs), firmness, and instrumental color with L* (luminosity), a* (red-green color), and b* (blue-yellow color) parameters. The results obtained indicate that the evaluated varieties had good productive performance, especially FR and RO, through viable production yields. Full article

Efficient inorganic carbon supply is a common limitation in microalgal cultivation, particularly in waste-derived media such as anaerobic digestate. Carbonic anhydrase (CA) accelerates the interconversion of CO₂ and bicarbonate and may therefore enhance carbon utilisation under conditions where inorganic carbon is abundant but not readily available. In this study, crude CA-containing extracts (aCA) were prepared from Scenedesmus-dominated algal biomass, and CA activity was quantified using an esterase assay (EAA). Although EAA activities varied depending on biomass pretreatment (0.15–0.47 U g⁻¹ DW), the physiological response to extract addition was consistent. In batch cultures of Chlorella sorokiniana grown in diluted digestate, aCA supplementation increased the specific growth rate (SGR) by 21–82%. In contrast, stimulation in a mineral medium was minimal, indicating that the benefit of aCA addition is most apparent under reduced inorganic carbon availability. In semi-continuous cultivation, repeated extract addition sustained a higher biomass productivity over time (rather than a specific growth rate). These results demonstrate that crude microalgal extracts containing CA can improve growth performance in digestate-based cultures and may offer a simple, low-cost approach to enhancing inorganic carbon utilisation in waste-integrated algal production systems. Full article

Background/Objectives: Legumes, a significant source of plant-based protein, play a crucial role in diets across Portugal and Spain, contributing to both human and animal nutrition. As plant-based diets gain traction, various legumes like chickpeas, lentils, and beans have risen in popularity. However, fava beans remain underutilized compared to these varieties. This study explores stakeholder perspectives on the factors influencing the lower consumption rates of fava beans in the Iberian Peninsula, despite their nutritional and environmental benefits. Methods: An exploratory qualitative study was conducted using semi-structured interviews with diverse stakeholders, including nutritionists, retailers, farmers, catering professionals, and both vegetarian and non-vegetarian consumers in Portugal and Spain. Results: Our findings highlight a perceived lack of visibility of fava beans in supermarkets and on influential social media platforms, which often shape consumer preferences. Seasonal availability further contributes to the limited consumption, as people tend to purchase fava beans only when they are more prominent in markets. Addressing local challenges to legume production and consumption can pave the way for effective interventions to increase the intake of these sustainable foods. This study suggests promoting fava beans as a locally cultivable option, which could reduce reliance on imports and enhance regional agricultural output. Interviewees suggested using targeted promotional tactics, such as short videos, cooking demonstrations, and influencer marketing on social media, as effective means to boost fava bean consumption. Conclusions: These exploratory findings indicate that such strategies may foster a more positive perception and integrate fava beans into everyday diets in the region. Full article

This study adopts a biochemical approach to sequester CO₂ while producing biomass rich in protein and lipids, using an adapted strain of Chlorella vulgaris (ALE-Cv), which had previously evolved to tolerate a gas mixture containing 10% CO₂ and 90% air. The research studied the operating parameters of the batch photobioreactor for ALE-Cv to evaluate the effects of inoculum size, photoperiod, light intensity, pH of culture, and CO₂ supply rate on biomass productivity and CO₂ bio-fixation rate. The optimal conditions were identified as 16:8 h light–dark cycles, 5000 lux, pH 7, 20 mL of 10 g/L inoculum, and 0.6 VVM; the system achieved a maximum total biomass production of 7.03 ± 0.21 g/L with a specific growth rate of 0.712 day⁻¹, corresponding to a CO₂ bio-fixation of 13.4 ± 0.45 g/L in batch cultivation. While the pre-adapted strain of Chlorella vulgaris under the same operating conditions, except for the gas supply, which was air, achieved a maximum total biomass production of 0.52 ± 0.008 g/L, and the total CO₂ bio-fixation was 1.036 ± 0.021 g/L during 7-day cultivation. A novel semi-continuous harvesting process, with and without nutrient addition, was also investigated to maximise biomass yield and enable water recycling for culture media. The maximum biomass production in semi-continuous harvesting process with and without nutrition added was 5.29 ± 0.09 and 9.91 ± 0.11 g/L, while the total corresponding CO₂ bio-fixation was 9.70 ± 0.13 and 18.16 ± 0.11 g/L, respectively, during 15-day cultivation. The findings provide critical insights into enhancing CO₂ bio-fixation through adaptive evolution of ALE-Cv and offer optimal operational parameters for future large-scale microalgae cultivation. This research also links microalgae-based CO₂ sequestration to green technologies and the bioeconomy, highlighting its potential contribution to climate change mitigation while supporting environmental sustainability, food security, and ecosystem resilience. Full article

This study aimed at developing in vitro propagation methods for Crocus sativus L., focusing on the effectiveness of temporary immersion systems (TIS) or bioreactors as an alternative, cost-efficient technique for the large-scale production of saffron corms. The effects of the culture system and cross-cutting on saffron propagation were evaluated. Saffron shoots were cultured in TIS and compared with shoots produced using a conventional semi-solid tissue culture system (SS). The recipient material for automated temporary immersion used in this study was the SETIS™ bioreactor. The growth parameters measured for in vitro culture were the number of neo-formed shoots, shoot height, and the number and size of corms. Based on the present detailed study, the highest shoot multiplication rate (9.1 shoots/explant with 7.2 cm of shoot height) was achieved in the TIS system after shoot cross-cutting, while the lowest multiplication rates were obtained in the semi-solid system (1 shoot/explant with 14.8 cm long shoots). Furthermore, the highest corm formation was obtained in the TIS system, with an average of four corms per explant, with a larger corm weight (10.90 g) and diameter (21.78 mm). These findings highlighted for the first time the efficiency of the bioreactor system combined with cross-cutting of the shoot for efficient and scalable saffron corm propagation, thus making a valuable contribution to sustainable cultivation and conservation strategies while meeting the growing demand for this spice. Full article

The coordination between carbon and nitrogen metabolism is central to plant adaptation to water-limited environments. This study investigated how soil management practices modulate the metabolic and physiological performance of Citrus sinensis trees cultivated under semi-arid conditions. Six field treatments combining weed-control netting, subsurface drainage, and zeolite amendment were evaluated for their effects on vegetative growth, yield, and fruit metabolome. Using ¹H-NMR spectroscopy, 23 metabolites in peel and 21 in juice were identified and quantified, revealing that sugars, organic acids, and amino acids were the most responsive compound classes. Multivariate analyses (PCA, PLS-DA) showed distinct metabolic fingerprints associated with each soil management regime. Treatments integrating netting and zeolite (T4) induced a coordinated reprogramming of carbon and nitrogen metabolism, characterized by altered levels of glucose, fructose, citrate, and proline. These changes suggest enhanced osmotic regulation and tricarboxylic acid cycle activity, supporting improved water-use efficiency and physiological stability under semi-arid stress. The results demonstrate that soil management directly influences fruit metabolic homeostasis, linking environmental modulation of root-zone conditions with whole-plant biochemical adjustment. This integrative metabolomic approach provides mechanistic insight into how soil–plant interactions shape the metabolic resilience of citrus under water-limited field environments. Full article

The sustainability of resources and ecological integrity are significantly influenced by land use and land cover change (LULCC) dynamics, particularly in ecotonal semi-arid regions where biome transitions are highly sensitive to anthropogenic disturbance and climatic variability. This study aims to assess historical LULCC dynamics and spatial reconfiguration across nine classes (grassland, shrubland, wetlands, forestland, waterbodies, farmed land, built-up land, bare land, and mines/quarries) in the C5 Secondary Drainage Region of South Africa over the three periods 1990–2014, 2014–2022, and 1990–2022. Using the South African National Land Cover datasets and the TerrSet liberaGIS v20.03 Land Change Modeller, this research applied post-classification comparison, transition matrices, asymmetric gain–loss metrics, and patch-based landscape analysis to quantify the magnitude, direction, source–sink dynamics, and spatial reconfiguration of LULCC. Results showed that between 1990 and 2014, Shrubland expanded markedly (+49.1%), primarily at the expense of Grassland, Wetlands, and Bare land, indicating bush encroachment and hydrological stress. From 2014 to 2022, the trend reversed as Grassland increased substantially (+261.2%) while Shrubland declined sharply (−99.3%). Forestland also regenerated extensively (+186%) along riparian corridors, and Waterbodies expanded more than fivefold (+384.6 km²). Over the long period between 1990 and 2022, Built-up land (+30.6%), Cultivated land (+16%), Forestland (+140%), Grassland (+94.4%), and Waterbodies (+25.6%) increased, while Bare land (−58.1%), Mines and Quarries (−56.1%), Shrubland (−98.9%), and Wetlands (−82.5%) decreased. Asymmetric analysis revealed strongly directional transitions, with early Grassland-to-Shrubland conversion likely driven by grazing pressure, fire suppression, and climate variability, followed by a later Shrubland-to-Grassland reversal consistent with fire, herbivory, and ecotonal climate sensitivity. LULC dynamics in the C5 catchment show class-specific spatial reconfiguration, declining landscape diversity (SHDI 1.3 → 0.9; SIDI 0.7 → 0.43), and patch metrics indicating urban and cultivated fragmentation, shrubland loss, and grassland consolidation. Based on these quantified trajectories, we recommend targeted catchment-scale land management, shrubland restoration, and monitoring of anthropogenic hotspots to support ecosystem services, hydrological stability, and sustainable land use in ecotonal regions. Full article

Background/Objectives: Meaningful social connections are critical for well-being in later life, yet older adults living with HIV frequently experience social isolation and loneliness, compounded by stigma, mental health conditions, and systemic inequities. This study aimed to explore how older adults living with HIV and a concurrent mental health diagnosis experience social isolation and cultivate meaningful relationships, situating these experiences within Social Convoy Theory. Methods: Using a Heideggerian phenomenological approach, we conducted in-depth, semi-structured interviews with 33 adults aged 50 and older in Ontario, Canada, who self-identified as living with HIV and a diagnosed mental health condition. Participants were recruited through community-engaged strategies and snowball sampling. Data were analyzed iteratively, combining descriptive and interpretive coding to identify patterns in social isolation, relational meaning, and the influence of intersecting social, structural, and health determinants. Results: Participants described social isolation as both a physical and existential experience, influenced by stigma, mental health challenges, and contextual factors such as urban versus rural settings. Meaningful relationships were characterized by authenticity, trust, emotional safety, and reciprocity, often formed within peer networks sharing similar lived experiences. Community engagement and virtual platforms facilitated connection, while rural or suburban environments often intensified isolation. Relationships providing validation, agency, and continuity of experience were particularly impactful on participants’ well-being. Conclusions: Social isolation among older adults living with HIV and mental health conditions extends beyond objective network measures to include emotional and identity-related dimensions. Interventions should prioritize affirming, context-sensitive spaces that support disclosure, trust, and reciprocal relationships, recognizing the nuanced needs of this population for both social and existential connectedness. Full article

This study examines the influence of social capital, intellectual capital, resource rents, and investment capital on the economic performance of the 18 member states of the European Union from 2005 to 2022. Principal component analysis and factor analysis are employed to construct composite measures of social and intellectual capital. The empirical model integrates static panel estimations with Monte Carlo simulations and Panel Smooth Transition Regression (PSTR) to examine nonlinear and regime-dependent growth functions. Investment capital exerts a greater influence on growth when intellectual capital is above a certain threshold, but social capital and resource rents exhibit diverse effects across various regimes; this is consistent with semi-endogenous growth models. In regimes with low intellectual capital, resource rents adversely influence growth, consistent with the resource curse concept; however, this effect diminishes as intellectual capital rises. Finally, partial least squares structural equation modeling indicates that social capital, investment capital, and resource rents influence economic growth, with this effect mediated by intellectual capital. The findings underscore the necessity for the European Union to cultivate and enhance knowledge-based assets while reducing reliance on resource rents to achieve more resilient and sustainable economic development. Full article

Drought stress represents a major constraint on global apple production, with the widely used semi-dwarfing rootstock ‘M.26’ being particularly vulnerable to water deficit. Although the osmolyte trimethylamine N-oxide (TMAO) has been shown to improve abiotic stress tolerance in the model plant Arabidopsis, its potential role in enhancing drought resilience in woody fruit trees remains largely unexplored. Under prolonged moderate drought stress, exogenous TMAO application significantly promoted plant growth, mitigating the drought-induced suppression of plant height by 5.3–12.2% compared to untreated drought-stressed controls and alleviating the decline in above-ground biomass. This improvement was underpinned by a substantial alleviation of root growth inhibition, with TMAO restoring total root length and biomass from 37% in the control to only 6.1–9.5%. TMAO also fine-tuned the root-to-shoot ratio to favor resource allocation to roots. Consequently, TMAO-treated plants maintained superior leaf water status, exhibiting higher relative water content (drought-induced reduction limited to ~17.5% with TMAO versus 26.3% in the control). Physiologically, TMAO alleviated the drought-induced stomatal limitation of photosynthesis, sustaining higher net photosynthetic rate, stomatal conductance, and transpiration rate. Crucially, under severe drought stress, TMAO pretreatment markedly enhanced ‘M.26’ survival rates from approximately 39% in the untreated control to 60–68%, representing a relative increase of approximately 74%. Collectively, this study demonstrates that exogenous application TMAO significantly enhances drought tolerance in apple rootstock ‘M.26’, highlighting its potential as an effective and environmentally safe plant growth regulator for more sustainable cultivation of fruit trees under irregular/erratic irrigation conditions. Full article

Sorghum (Sorghum bicolor L. Moench) is a major cereal crop cultivated in semi-arid regions, but its yield is often constrained by soilborne fungal pathogens that affect plant growth and grain quality. This study explored how Trichoderma-based bioinoculants restructure the structure and functional composition of fungal communities in distinct sorghum compartments (soil, root, seed, and stem) using ITS amplicon sequencing. Two cultivars, Kalatur and Foehn, were evaluated under control and inoculated conditions. Alpha diversity indices revealed that inoculation reduced overall fungal richness and evenness, particularly in seed and stem tissues, while selectively enhancing beneficial taxa. Beta diversity analyses (PERMANOVA, p < 0.01) confirmed significant treatment-driven shifts in community composition. LEfSe analysis identified Trichoderma and Mortierella as biomarkers of inoculated samples, whereas Fusarium, Alternaria, and Penicillium predominated in controls. The enrichment of saprotrophic and symbiotrophic taxa in treated samples, coupled with the decline of pathogenic genera, indicates a transition toward functionally beneficial microbial assemblages. These results demonstrate that Trichoderma bioinoculants not only suppress fungal pathogens but also promote the establishment of beneficial ecological groups contributing to plant and soil health. The present work provides insight into the mechanisms through which microbial inoculants modulate host-associated fungal communities, supporting their use as sustainable tools for crop protection and microbiome management in sorghum-based agroecosystems. Full article

This paper investigates how Scottish rural schools engage with their broader educational landscape, particularly through collaborative practices and capacity-building efforts. It examines how these schools cultivate a culture of partnership, both among institutions and within their communities, to strengthen leadership and enhance teaching and learning. Guided by Place-Based Education (PBE) as its conceptual framework, the study emphasises equity challenges rooted in local contexts and situates rural education within Scotland’s historical, societal, and policy landscape. Drawing on qualitative case studies of five schools, data were collected through semi-structured interviews with principals and supported by documentary evidence and student attainment data from national assessments. The findings showcase school leaders’ efforts to enhance social and educational outcomes and build sustainable, equity-driven systems. The paper concludes with implications for policy and practice, addressing equitable access, workforce recruitment and retention, and the potential for schools to collaborate with local and regional stakeholders to strengthen rural education. Full article

The ideals of community and collective action are key tenets of the environmental justice (EJ) movement. Yet the pervasive grind culture that underpins capitalist societies makes it challenging to embrace these core values. EJ convenings are organized by a variety of entities, including grassroots organizations, government agencies, environmental non-governmental agencies, and academic institutions, and often reflect the tone of the organizing entity. This work explores the impact of a community and academic partnered EJ summit in addressing ecological grief (eco-grief) and ecological anxiety (eco-anxiety), supporting collective action, and attending to healing justice. We interviewed thirteen participants who attended the 2024 Pittsburgh Environmental Justice Summit using semi-structured, open-ended questions. Drawing on insights from lived experiences with the environment and environmental harms, we sought to understand how participants perceived EJ, health, and healing, as well as the role of summits and community efforts in shaping these perspectives. Emotional impacts like eco-grief, eco-anxiety, and intergenerational trauma were other common themes established through the interviews. Despite negative emotions being more commonly expressed than positive emotions, hope emerged as the most widely expressed theme. The summit was viewed as a space for reflection, support, establishing new contacts, and promoting growth and resilience. The results underscore the importance of integrating emotional and psychological aspects into EJ frameworks as well as the value of community-based approaches that combine EJ and healing practices to foster resilience, promote equitable health outcomes, and cultivate hope through collective action and support. Full article