Search Results (871)

The desert bottomland of Northern Shaanxi, China, features an ecologically fragile environment with a pronounced mismatch between abundant coal resources and scarce water resources. Large-scale coal mining often impairs the water-resisting capacity of overlying strata, leading to shallow groundwater depletion, surface drought, and vegetation degradation. This study focuses on determining the height of the water-conducting fractured zone (WCFZ) and assessing shallow groundwater loss in such ecologically sensitive mining areas. Through analysis of measured WCFZ heights, the empirical formulas currently specified in national codes are found to be inapplicable to the study area. A multi-factor nonlinear prediction model, better suited to local conditions, is therefore established using multiple nonlinear regressions. Taking the Jinjitan Coal Mine as a case study, a 3D hydrogeological conceptual model is developed using FEFLOW to simulate phreatic water responses to mining activities. The results indicate a maximum phreatic water drawdown of 3–4 m, with post-mining burial depths predominantly ranging from 5 to 8 m, reaching a warning level that requires attention and mitigation. This study provides a valuable reference for water hazard prevention and ecological protection in desert bottomland regions. Full article

Journalism in Albania unfolds in a fragile media environment where political pressure, economic insecurity and intimidation are part of everyday professional life. This study examines how Albanian journalists experience job-related stress and how they cope with it. Using a qualitative design, the study draws on 14 semi-structured interviews and thematic analysis to identify the main stressors and response strategies described by participants. Findings show that occupational stress is not episodic, but normalized within journalistic practice. Journalists reported three major stressors: political interference, financial precarity, and direct threats linked to reporting on crime and corruption. To manage these pressures, they relied on both problem-focused strategies, such as careful verification, legal consultation, and strategic reporting practices, and emotion-focused strategies, including peer support, emotional compartmentalization, and maintaining boundaries between work and family life. Full article

Acoustic survey provides a measurement-based approach for investigating heritage spaces in which architectural morphology, environmental conditions, and sound-related practices are physically interrelated. This study applies a portable and non-invasive survey protocol to the medieval cave sanctuary of San Michele di Mezzo, located in Fisciano, Southern Italy. The site consists of stratified natural and built spaces, including a lower cave, an upper cave, and a later upper church, and represents a relevant case study for assessing the acoustic behaviour of small, irregular, and fragile cultural heritage environments. The experimental procedure combined calibrated microphone recordings, time-domain signal inspection, third-octave-band analysis, and impulse-response-derived room-acoustic indicators, including reverberation, clarity, and definition parameters. Under the adopted source–receiver configurations, the results show acoustic differentiation among the lower cave, upper cave, and later church. The caves exhibit shorter decay times than the church over most frequency bands, while clarity and definition indicators reveal a frequency-dependent behaviour that does not support a general claim of the acoustic superiority of one space over another. Comparative data from other cave and cave-like environments further contextualize the measured response of San Michele di Mezzo. The findings do not imply intentional acoustic design; rather, in the measured configuration, they show that, under the chosen conditions, the long-lasting devotional centrality of the lower cave is compatible with an acoustic response that does not contradict spoken or sung devotional use. More broadly, the study contributes to applied acoustics by demonstrating that low-invasive field surveys can provide reproducible acoustic indicators for heritage interpretation, conservation-oriented documentation, and the investigation of intangible sound-related dimensions of cultural heritage. Full article

Complex decision-making environments are commonly evaluated through output performance, while the structural coherence of the underlying decision architecture remains insufficiently examined. This study introduces the Structural Asymmetry Diagnostic Architecture (SADA), a symmetry-based framework for evaluating structural stability in research decision architectures under uncertainty. The proposed model formalizes the interaction between methodological complexity, uncertainty exposure, and validation capacity through the Imbalance Coefficient (Δ) and the generalized Research Stability Index ($RS{I}_{\alpha ,\beta }$). An analytical evaluation of structural configurations, combined with a comparative benchmark against representative MCDM and uncertainty-aware methods, shows that structural symmetry is a necessary condition for robustness, whereas validation capacity acts as a feasibility-enabling factor rather than a compensatory mechanism for severe asymmetry. The results indicate that ranking consistency alone does not guarantee structural robustness, as configurations with acceptable ordinal behavior may remain fragile when methodological complexity and uncertainty exposure are misaligned. SADA therefore operates as a pre-decisional diagnostic layer that complements classical decision-making methods by assessing architectural coherence before outcome interpretation. The framework is interpretable, dimensionless, and compatible with broader uncertainty-aware paradigms, offering a structural perspective on robustness as an emergent property of symmetry preservation under constrained validation. Full article

Urban systems are becoming increasingly complex due to rapid urbanization, socio-economic disparities, and climate change. Addressing these challenges requires innovative approaches that integrate data-driven methodologies with resilience planning. This paper presents a novel extension to the Urban System Abstraction Hierarchy (USAH) framework by integrating socio-economic indicators into a graph-based modeling environment, enabling a more holistic understanding of urban resilience. Our approach advances existing models by operationalizing multi-domain resilience through a graph-based framework that captures complex interdependencies across critical infrastructure, governance, finance, and vulnerable populations. Unlike prior USAH applications, which focused primarily on acute shocks, the proposed model captures interdependencies across infrastructure, environmental conditions, health systems, economic robustness, public finance, and social cohesion. Several graph metrics were analyzed including betweenness centrality, and system-level resilience metrics. Sensitivity testing of the indicator weighting scheme showed that increasing the influence of the network structure from 0.7 to 0.9 betweenness centrality shifts indicator importance toward structurally central nodes while reducing the influence of sub-indicator averages. However, the system-level resilience remained unchanged across scenarios. Beyond traditional centrality measures, we introduce new network metrics that identify system stabilizers, key policy leverage points, cross-domain dependencies, and overall structural fragility. Together, these measures transform the model from a descriptive mapping tool into a practical decision-support framework for resilience planning. Full article

The Northern Tibetan Plateau is among the most climate-sensitive alpine regions globally. To address the limited applicability of the traditional Remote Sensing Ecological Index (RSEI) in sparsely vegetated areas, this study developed a Soil-Adjusted Remote Sensing Ecological Index (SRSEI) tailored to cold and arid environments. The ecological quality of the Northern Tibetan Plateau from 2000 to 2025 was systematically evaluated and analyzed. The results indicate that: (1) The improved SRSEI achieved a first principal component (PC1) contribution of 72.76%, a significant enhancement over traditional models that effectively mitigates noise from soil backgrounds and anthropogenic features. (2) Between 2000 and 2025, ecological quality was predominantly moderate, following a characterized east-to-west declining spatial gradient. Overall mean SRSEI values fluctuated between 0.420 and 0.476, exhibiting a marginal downward trend. (3) Ecological degradation affected 50.17% of the region, with 26.14% facing risks of sustained decline. Conversely, 40.11% of the area displayed potential recovery trends, suggesting potential spatial divergence in future ecological trajectories. (4) Regional ecological dynamics are governed by a topographic-thermal compound driving mechanism. Elevation (DEM), temperature (TEMP), and surface shortwave radiation (SRAD) emerged as the dominant explanatory variables. Furthermore, dual-factor interactions exhibited significant enhancement effects, while the influence of anthropogenic factors was comparatively weak at the regional scale. These findings provide a scientific basis for the long-term monitoring of fragile alpine ecosystems and the strategic development of the Qiangtang National Park. Full article

The multi-religious geography of urban streets in India is shaped by the constant negotiation of religious difference in everyday life. Based on ethnographic fieldwork conducted in 2022, this article examines three religious processions commemorating Sikh, Jain, and Ambedkarite events that take place in the neighborhoods of Somvār Peṭh and Rāstā Peṭh in the city of Pune on the same calendar day, but at different times. Focusing on how these processions occupy, traverse, and temporarily transform shared streets, the article analyzes how religious communities claim public space through material practices, bodily presence, and sensory regimes, while simultaneously navigating political regulation and instrumentalization. Drawing on Henri Lefebvre’s theory of rhythmanalysis, the study shows how biological, social, and religious rhythms structure the timing, scale, and form of these events, enabling a fragile coexistence in a densely multi-religious urban environment. The article argues that attention to rhythm offers a productive analytical lens for understanding everyday religion in the city, revealing how power, identity, and belonging are negotiated through temporal coordination, embodied adjustment, and contingent forms of sharing public space. Full article

Petroleum hydrocarbon contamination of soils remains a persistent environmental problem in Arctic and sub-Arctic regions, where oil extraction, pipeline transportation, fuel storage, industrial legacy sites, and diesel-dependent infrastructure coexist with fragile cold-climate ecosystems. Remediation in these regions is constrained by low temperatures, short thaw seasons, permafrost, waterlogged active layers, slow vegetation recovery, limited infrastructure, and high mobilization costs, which limit the direct transferability of conventional temperate-zone technologies. This study presents a structured narrative review of international and Russian evidence on petroleum-contaminated soil management in cold regions, focusing on monitoring as a basis for remediation decision-making. Peer-reviewed studies, technical guidance documents, regulatory frameworks, and regional case studies were analyzed across key domains, including environmental constraints, hydrocarbon behavior, monitoring methodologies, and remediation technologies. Particular attention is given to chemical analysis, hydrocarbon fractionation, bioavailability-oriented methods, ecotoxicological bioassays, and microbial indicators as tools linking contamination assessment with remediation strategy selection. Reliance on total petroleum hydrocarbon (TPH) concentration as a primary endpoint is shown to be insufficient, especially in cold-region soils where strong sorption and limited mass transfer decouple concentration from biological exposure. Multi-endpoint monitoring systems provide a more reliable basis for assessing contaminant risk, treatment effectiveness, and soil recovery. For the Russian Arctic, the integration of national recultivation frameworks with risk-based assessment and ecotoxicological monitoring is identified as a key pathway for improving remediation outcomes. A decision-oriented framework is proposed that links environmental conditions, contaminant properties, and monitoring data to support the selection and optimization of remediation strategies. This study supports a transition from concentration-based cleanup toward risk-informed and ecosystem-oriented management of petroleum-contaminated soils in Arctic and sub-Arctic environments. Full article

This study examines how women entrepreneurs in Ecuador confront structural constraints and how these conditions influence their strategic management decisions. Adopting an explanatory approach, a structural equation model (PLS-SEM) was developed based on a survey administered to 110 female entrepreneurs. The instrument was designed to capture perceptions of institutional, financial, sociocultural, and technological limitations, as well as strategic responses in areas such as innovation, networks, digitalization, and formalization. The questionnaire was validated through expert judgment and a pilot test, and data were analyzed using SmartPLS. The results show that structural constraints are significantly associated with the adoption of strategic decisions (β = 0.496; R² = 0.246), suggesting an adaptive resilience pattern in response to adverse contexts. While internal reliability indicators were acceptable (α > 0.87; ρc > 0.89), convergent validity was limited (AVE = 0.43 and 0.45, below the 0.50 threshold), reflecting the multidimensional complexity of the constructs measured. The study adds value by demonstrating how female entrepreneurial agency emerges in environments marked by institutional fragility, reinforcing the need for comprehensive public policies that reduce structural frictions and expand the entrepreneurial decision space. Future research should explore mediational models and heterogeneity analyses to deepen understanding and inform targeted interventions. Full article

This review summarizes the research on the end effectors of agricultural harvesting robots (2010–2025) and extracts two core design principles. First of all, the selection of end effectors must follow the biological characteristics of fruits: rigid grippers are suitable for hard skinned and regular fruits; soft grippers can reduce the damage of fragile crops to a certain extent; suction cups are suitable for smooth, barrier free surfaces; the envelope type is suitable for soft and lossless picking scenes; the combined suction and grip design is more suitable for unstructured environments. Secondly, the separation mode should match the characteristics of the stem: motion separation (torsion/pull) is suitable for weak stems, while cutting is mainly used for hard stems. Unlike previous literature, this review provides a field deployability checklist (including dust/water proofing, cleanliness, maintenance, aging prevention, and aspiration prevention) to narrow the results of the laboratory and the real field environment. The three future directions of multimodal perception, variable stiffness driving and reinforcement learning are logically related to the analysis in this paper: multimodal perception optimizes the perception limit, variable stiffness solves the rigid–flexible trade-off, and reinforcement learning provides adaptive strategies for different crops. This framework can match the end effector design with the crop-specific field conditions. Full article

Intensive extraction in shallow coal seam groups poses a severe threat to regional hydrogeological stability. This study investigates the evolutionary laws of water-conducting fracture zone (WCFZ) height and phreatic level response at the Wanli No. 1 Mine. Although limited to a two-dimensional physical model and a single-case study, the research integrates field monitoring with similarity simulations to evaluate the efficacy of gangue grouting backfilling (GGB). The results reveal a significant superposition effect in dual-seam mining, where cumulative disturbances trigger the reactivation of upper-seam fractures, causing the WCFZ to penetrate the surface (170 m)—a phenomenon absent in single-seam mining. Scientifically, this work identifies a dual-threshold effect for ecological and structural preservation. While an equivalent filling rate (η) of 35% is sufficient to maintain the ecological water level in single-seam mining, dual-seam extraction requires a minimum η of 65% to restrict phreatic drawdown within the 1.5 m ecological threshold. Notably, while the laboratory model suggests a higher mechanical safety limit of η = 80% to prevent fracture propagation, the 65% threshold provides a balance between backfilling efficiency and environmental protection. The primary scientific contribution of this study is the quantification of the coupling relationship between overburden mechanical stability and long-term ecological functions. By shifting the overburden failure mode from “surface-penetrating fracturing” to “controlled bending subsidence,” this research provides a robust theoretical foundation for decoupling mining intensity from hydrogeological degradation in fragile multi-seam environments. Full article

As a strategic node of the Silk Road Economic Belt and a prototypical valley-type city, Lanzhou is subject to the dual constraints of rapid urbanization and an inherently fragile ecological foundation, making the coordination between urban expansion and ecosystem services a critical issue for regional sustainability. Drawing upon multi-temporal land use remote sensing datasets provided by the Chinese Academy of Sciences Resource and Environment Science Data Center, in conjunction with soil, meteorological, and socio-economic data, this study integrates a land use transition matrix, the InVEST model, a modified coupling coordination degree model, and the geographic detector to comprehensively examine land use dynamics, the spatiotemporal evolution of urban expansion, and the spatial heterogeneity of ecosystem services (i.e., carbon storage, water yield, habitat quality, and soil conservation) in Lanzhou. In addition, the coupling coordination relationship and its underlying driving mechanisms are systematically explored. The results demonstrate the following: (1) Between 1980 and 2020, urban land area in Lanzhou increased from 103.87 km² to 286.83 km², accounting for 2.17% of the total area, with cropland constituting the dominant source of expansion and exhibiting a fluctuating “high–low–high” conversion trajectory. (2) Ecosystem services exhibit pronounced spatial heterogeneity, with carbon storage and habitat quality displaying a pattern of “low in the southeast and high in the northwest”, water yield showing an increasing gradient from southeast to northwest, and soil conservation characterized by “lower values in central areas and higher values in peripheral regions”; (3) Urban expansion has accelerated significantly, with Yongdeng County and Gaolan County emerging as principal expansion hotspots during 2010–2020. (4) The dominant driving mechanism gradually shifted from natural factors to the synergistic interaction between natural and socioeconomic factors, and the interaction among driving factors markedly enhanced the explanatory power for ecosystem service evolution. (5) The coupling coordination degree has transitioned from widespread imbalance to a spatially differentiated pattern, characterized by relatively coordinated conditions in peripheral areas and persistent imbalance within the central urban core. These findings provide a robust scientific basis for territorial spatial optimization and the synergistic development of ecological and economic systems in valley-type cities, and offer important implications for sustainable development in arid and semi-arid regions. Full article

Fragile X Syndrome (FXS) is an inherited cause of intellectual disability and autism, arising from silencing of the Fmr1 gene and loss of Fragile X Messenger Ribonucleoprotein 1 (FMRP). FMRP is an RNA-binding protein critically involved in neurodevelopmental processes, including neurogenesis. We examined the proliferation and maturation of adult-born dentate granule cells (abDGCs) and glial populations in Fmr1 knockout (KO) and wild-type (WT) mice at 4, 12, and 24 weeks of age under control and early-life stress (ELS) conditions. Based on prior findings, we hypothesized that KO mice would exhibit increased neurogenesis and atypical responses to ELS compared with WT mice. Using immunohistochemistry, we quantified multiple stages of neurogenesis in the dentate gyrus, including proliferating (Ki67+), immature (doublecortin [DCX]+), and apoptotic (cleaved caspase-3 [CC3]+) cells. We also assessed glia using Iba1 (microglia) and GFAP (astrocytes) immunoreactivity. KO mice displayed significantly increased Ki67+ proliferating and reduced CC3+ apoptotic cells across ages, accompanied by increased Iba1+ and GFAP+ glial densities. However, KO mice exhibited fewer DCX+ neuroblasts at later time points. When reared in ELS conditions, KO mice show blunted or no changes in neurogenesis and glial populations relative to WT mice reared in ELS conditions or KO mice in control conditions. These results indicate that FMRP loss disrupts hippocampal neurogenesis by increasing cell proliferation while limiting neuronal maturation and expanding glial populations. Moreover, the absence of neurogenic and glial responses to ELS in KO mice highlights a gene–environment interaction that may influence FXS-related neuropathology by limiting the adaptive capacity of the hippocampal neurogenic niche. Full article

Groundwater is a critical lifeline for ecosystems and human settlements in arid and semi-arid regions, yet it is increasingly vulnerable to the dual pressures of extreme climatic conditions and intensifying anthropogenic activities. This study investigated 24 groundwater and 4 river water samples to discuss the hydrogeochemical evolution and water quality suitability in the Tianjun Basin, a typical high-altitude arid basin on the northeastern Tibetan Plateau. The results indicate that groundwater is mildly alkaline (pH: 7.65–8.35) and predominantly fresh (TDS: 233.77–1061.42 mg/L). Hydrochemical facies evolve from HCO₃-Ca type in upstream areas to Mixed HCO₃-Na·Ca and Cl-Na types. Hydrochemical analysis suggests that silicate weathering and carbonate dissolution are the dominant natural processes, while cation exchange further modifies the ionic composition. Notably, anthropogenic nitrogen (NO₃⁻ and NH₄⁺) contamination, primarily from domestic sewage in the Tianjun Basin, has significantly impacted groundwater quality. Health risk assessment shows that infants are the most vulnerable group, with 16.67% of samples posing a non-carcinogenic risk via the oral pathway. Regarding irrigation suitability, while sodium hazards are generally low, a significant salinity hazard is identified due to elevated electrical conductivity in the arid environment. This poses a substantial risk of secondary soil salinization, necessitating strict salt management strategies to preserve long-term land productivity. These findings provide critical insights for the sustainable management of fragile groundwater resources in extreme arid environments. Full article

Against the backdrop of global climate change and the “carbon neutrality” target, the ecological quality improvement of the Loess Plateau—a key region for ecological restoration in China—and its impact on vegetation carbon sources hold significant importance for regional carbon balance and ecological security. Based on MODIS and meteorological reanalysis data from 2002 to 2024, this study constructed the Remote Sensing Ecological Index (RSEI). Combined with a carbon source/sink model, it systematically assessed the spatiotemporal coupling evolution characteristics of ecological environment quality and vegetation carbon storage capacity in the Loess Plateau, and explored the synergistic driving mechanisms of major hydrothermal and surface factors. The results indicate the following: (1) From 2002 to 2024, the ecological environment of the Loess Plateau improved significantly, with the RSEI rising from moderate to good. This improvement was accompanied by a marked decrease in surface dryness, an increase in surface wetness, and notable growth in vegetation cover, revealing a positive coupling relationship characterized by “reduced surface dryness—increased surface wetness—enhanced vegetation restoration.” (2) Regional vegetation carbon storage capacity strengthened markedly. Gross Primary Productivity (GPP), Net Primary Productivity (NPP), and Net Ecosystem Productivity (NEP) all showed significant increasing trends, and the proportion of area classified as carbon sink increased substantially. (3) Spatially, carbon sink distribution exhibited a pattern of “higher in the southeast, lower in the northwest.” Sub-regions A and D were identified as core areas with higher ecological quality and carbon sink capacity, whereas sub-regions B and C were more ecologically fragile and served as primary carbon source areas. (4) The implementation of soil and water conservation measures on the Loess Plateau has effectively enhanced regional carbon storage capacity. Vegetation restoration, improved water conditions, and reduced surface dryness have jointly driven the transition of the Loess Plateau ecosystem from a “vulnerable type” to a “recovering type”, while ecological restoration projects have played a certain role in enhancing the carbon sink. This study provides a theoretical basis and scientific–technological support for ecological protection and high-quality development in the Yellow River Basin. Full article