Found 565 results
Open Access
Review
15 December 2025Synthesis, Spectroscopic Characterization Techniques, and Functional Applications of Selenium Heterocycles
The paper reviews the unique chemical properties of selenium, focusing on selenium-containing heterocycles and organoselenium chemistry. The present study undertakes a critical examination of synthetic strategies, ranging from classical nucleophilic selenation and transition-metal catalysis to emerging photo-redox and electrochemical approaches. The text goes on to highlight advanced characterisation techniques, with particular reference to the combination of 77Se NMR spectroscopy with DFT calculations and single-crystal X-ray diffraction for structural elucidation. The functional applications of these compounds are the subject of extensive discussion, including their role in enhancing the performance of sustainable organic photovoltaic (OPV) materials for renewable energy conversion, and their potential in biomedicine as TrxR inhibitors for cancer therapy and as photosensitizers in antibacterial applications. The present study places particular emphasis on the contribution of selenium-containing heterocycles to improving the power conversion efficiency (PCE) of solar devices. Finally, the review outlines future research directions and common challenges in this field, such as enhancing the sustainability of catalytic processes and addressing biosafety concerns associated with selenium-based reagents.
Open Access
Article
12 December 2025Understanding the Genetic Diversity of Bacteria Isolated from Across the Atacama Desert
Despite being one of the driest and harshest deserts on Earth, the Atacama Desert is home to a variety of bacterial life. Microorganisms that reside here may have developed adaptations to help them survive this unique environment. In this study, we used bioinformatic and genetic methods to assess the abundance of phyla that are present in this environment and focus on the types of adaptations individual bacteria have obtained. To assess bacterial diversity, we used 16S rRNA sequencing on soil samples and determined the relative composition of different phyla and archaea at sixteen locations. The whole genome sequence genome of eight selected pigmented bacteria was also performed. We found that all strains we sequenced are predicted to produce bioactive compounds. We focused on stress-tolerance capabilities, including pigment production pathways, biofilm-related genes, antibiotic production, and genome stability. We also found that the pigments that these bacteria produce have antioxidant, iron, and ion chelating, and/or antibiotic properties. This characterization allows us to assess adaptive strategies of bacteria, which is important in the fields of agriculture, biotechnology, and health.
Open Access
Review
12 December 2025Bibliometric Review of Bio-Based Building Materials and a Comparison with Prior Research: Toward Probabilistic Approaches for Material Variability
The purpose of this article is to extend previous bibliometric research on bio-based building materials by conducting a comparative analysis. The objective is to expand the initial study by applying a broader and more inclusive set of search terms to evaluate the sensitivity of Web of Science to keyword variations. In parallel, a separate bibliometric analysis is performed on research related to probabilistic approaches, which are essential for managing the variability and uncertainty in building material properties. Finally, a third bibliometric analysis is carried out at the intersection of these two fields: bio-based building materials and probabilistic methods. This integrated analysis aims to highlight the existing gap in the literature. The findings reveal the limited application of probabilistic approaches in the study of bio-based building materials and underscore the need to incorporate uncertainty quantification and stochastic modeling to understand better and optimize these sustainable construction resources. Overall, the results highlight two main outcomes. First, they demonstrate the strong sensitivity of bibliometric outcomes to the choice of search terms and databases, emphasizing the need for transparent and consistent keyword strategies; second, they show that the overlap between probabilistic approaches and bio-based materials research remains extremely limited, underscoring the importance of fostering stronger integration between these areas.
Open Access
Perspective
12 December 2025Randomization, Ritual, and Cultural Evolution: Revisiting Omar Khayyam Moore’s “Divination: A New Perspective”
In 1957, Omar Khayyam Moore proposed a novel hypothesis that Naskapi divination (scapulimancy) functioned as a randomization device to improve hunting success. This paper traces the intellectual history of Moore’s argument, reviewing both the initial support it received and the significant critiques that have rendered its original formulation empirically and theoretically untenable. While Moore’s specific claims about caribou hunting and group-level benefits are likely flawed, I argue that the enduring value of his work lies in the profound question it raised: how can functionally adaptive cultural practices emerge without conscious design? By re-examining Moore’s hypothesis through the lens of contemporary cultural evolutionary theory, in this paper, I show how his core insight has been revitalized. Modern frameworks, particularly those developed by Joseph Henrich, provide a robust mechanism—biased social learning—to explain the evolution of “design without a designer”. This perspective demonstrates that causally opaque and seemingly irrational practices can be culturally transmitted and refined because they generate adaptive outcomes, an insight that has inspired and been supported by a wave of recent psychological, experimental, and historical research. Ultimately, Moore’s contribution is reframed not as a failed functionalist explanation, but as a prescient, foundational query that anticipated a central research program in the modern study of human behavior and culture.
Open Access
Article
09 December 2025A Comprehensive Survey of Deep Reinforcement Learning Techniques for Soft Mobile Robots
Soft robotics has emerged as a promising direction for enabling safe, adaptive, and energy-efficient interactions with unstructured environments due to its inherent compliance. Recently, Deep Reinforcement Learning (DRL) has become a powerful tool for autonomous behavior generation in soft robots, surpassing limitations of classical model-based control. However, despite rapid growth of publications in this domain, there is still a lack of systematic comparative surveys that clarify how different DRL approaches have been used for soft mobile robots, what types of tasks they address, and what performance evaluation criteria have been used. In this article, we review and classify existing works in DRL-enabled soft robotics, focusing particularly on soft mobile systems, and present a structured synthesis of contributions, algorithms, training strategies, and real-world applications. Unlike previous reviews that discuss soft robotics or DRL separately, this paper explicitly provides cross-comparison across DRL paradigms and soft robot tasks, enabling researchers to identify suitable DRL approaches for different soft mobile robotic behaviors. Finally, major challenges and promising future directions are proposed to advance this interdisciplinary research area.
Open Access
Article
09 December 2025Mechanical Characterization of Ship Building Grade A Steel by Rapid Cooling in Different Liquid Media
Steel is an essential component used to build marine vessels due to its endurance of the sea’s harsh conditions, including corrosion and dynamic stresses, therefore, different grades of mild steel are used in shipbuilding. It provides the strength, ductility, and weldability necessary for structural integrity, consisting of carbon, manganese, etc., as alloying elements. In this research, different quenching media were employed to assess variations in mechanical properties. This process ultimately triggered alterations in the microstructure of the steel. Two types of media, such as vegetable oil (Canola) and Polyvinylpyrrolidone polymer (PVP), were studied in comparison with simple heat-treated steel. Mechanical characterization comprised of tensile testing, hardness and impact testing to evaluate major changes in strength and ductility. Furthermore, a microscope was used to interpret the microstructure. To guarantee consistency in testing, samples were prepared in accordance with ASTM guidelines. The yield strength of as-received steel was increased from 298 MPa to 358 MPa and 370 MPa because of rapid cooling action in PVP and oil, respectively. A significant increase in Ultimate tensile strength was achieved due to the variety of quenching media; however, ductility was seriously compromised because of the excessive hardness of the material. Impact energy analysis revealed a notable reduction, which is linked with degradation in toughness.
Open Access
Article
08 December 2025Short-Form Video Application Use and Self-Rated Health among Older Adults: The Mediating Role of Perceived Social Support and the Moderating Role of Media Literacy
Although short-form video applications (apps) are increasingly popular among older adults, little research has investigated the relationship between their use of such apps and health outcomes. The present study aims to investigate this relationship while examining the mediating role of perceived social support and the moderating role of media literacy. Three hundred and nineteen older adults completed our questionnaire. The results showed that short-form video app use was positively associated with self-rated health among older adults, and this association was mediated by perceived social support. Moreover, the positive association between short-form video app use and perceived social support was observed in older adults with lower (but not higher) levels of media literacy. Future interventions aimed at promoting the health and well-being of older adults (especially those with lower media literacy) should consider teaching participants to use short-form video apps appropriately.
Open Access
Article
08 December 2025Public Participation in Ecological Civilization Construction in Urumqi: A Case Study of a Rapidly Expanding Arid Metropolis in Northwestern China
Public participation in ecological civilization construction is a critical pathway for advancing ecological urban design. This study examines residents’ perceptions, satisfaction, and participation in the construction of ecological civilization in Urumqi, northwestern China. Drawing on 1012 questionnaires, this empirical study investigates factors influencing public participation in the construction of ecological civilization. The findings indicate that residents exhibited a strong subjective awareness of public participation in ecological civilization construction (mean score = 4.66), yet ecological cognition (2.75) and participation confidence (2.97) were relatively weak and require further improvement. Satisfaction levels were relatively higher for green status (2.51) and information transparency (2.41), whereas overall satisfaction remained modest, with water resources (1.81) and waste management (1.99) emerging as key concerns. Residents demonstrated a moderate willingness to contribute financially and primarily engaged in low-cost, habitual ecological practices. Significant differences were observed across socio-demographic variables (p < 0.05). Uncivil behaviors and natural pressures were observed as visible obstacles. Strong government leadership, active public engagement, and effective media communication contribute to advancing ecological civilization construction. These results provide valuable insights for promoting ecological civilization construction in northwestern China.
Open Access
Article
05 December 2025Long-Term Creep Performance of Ferritic SOC Interconnect Steel
Crofer® 22 H is a well-known commercial ferritic stainless steel for the construction of SOC interconnect plates. Its performance under creep loading conditions in the temperature range from 700 to 800 °C was evaluated against a pre-commercial trial steel to signify the impact of thermomechanical treatment history on long-term creep response. While the commercial grade prevailed in solution treated, i.e., low dislocation density, state, the trial steel was put into creep service in a deformed, i.e., high dislocation density, condition. Dislocations do play a major role in the early stages of the nucleation of strengthening Laves phase precipitates, and for this reason, sensitively impact the creep response of the materials in the primary stage of creep, which even affects the following (limited) secondary stage and especially the transition into the creep life dominating tertiary creep stage.
Open Access
Article
04 December 2025Stakeholder Mental Models for Sustainable Management of the Invasive Pearl Oyster Pinctada radiata in the Eastern Mediterranean
Sustainable management of marine and coastal systems depends not only on ecological dynamics but also on the ways stakeholders perceive and interpret them. This study investigates how fishers, scientists, and government officials understand and frame the management of the Indo-Pacific pearl oyster Pinctada radiata, a non-native yet economically valuable species established around Evia Island, Greece. Using a mixed-methods approach (N = 80), we combined an eleven-item Hydro-ecological Governance Perception Scale (HGPS) with open-ended responses to explore cognitive patterns and governance perspectives. Sampling adequacy was satisfactory (KMO = 0.74; Bartlett’s χ2(55) = 350.41, p < 0.001) and factor analysis revealed two interrelated dimensions explaining 67.8% of total variance (α = 0.84; ω = 0.86; CR = 0.82). Although Kruskal–Wallis tests showed no statistically significant differences among groups (p > 0.05), hierarchical clustering distinguished three partially overlapping cognitive profiles: Ecological Pragmatists, Institutional Collaborators, and Adaptive Stewards (Silhouette = 0.45; CH = 150.23; DBI = 0.75). Thematic and sentiment analyses underscored the importance of collaboration, transparency, and education (mean sentiment = 0.58). The findings demonstrate how cognitive diversity can improve hydro-ecological resilience and the sustainability of coastal governance when it is mobilized through co-management and participatory monitoring.
