Search Results (113)

Traditional villages, as forms of significant cultural heritage, have garnered global scholarly attention. This study focuses on the traditional village clusters in Qiandongnan Prefecture, a UNESCO World Heritage site, which includes 415 nationally designated villages. Based on spatial relational analysis and other methods, this study explores the intrinsic relationship between the spatial connectivity of traditional village clusters and their development. The findings are as follows: 1. The spatial distribution of villages exhibits a “dense core, sparse periphery, and localized jumps” pattern. 2. There are five types of development, with over 70% based on agriculture and low industrial differentiation. 3. The spatial connectivity network is clustered, with overall connectivity but a lack of internal coherence, forming a hierarchical network constrained by geography. 4. The spatial connectivity is relatively unstable, highly vulnerable, and exhibits a clear core-periphery structure, where geographical proximity determines basic connections and functional uniqueness drives value-added connections. 5. The overall development potential of these villages is assessed as medium to low. Enhancing network connectivity can foster comprehensive development, and adjusting spatial connectivity could improve its development potential. The study proposes a two-tiered optimization strategy based on the intrinsic connectivity and development characteristics of these villages, providing insights into the development of traditional villages in other regions and cultural heritage areas worldwide. Full article

Radish is a root vegetable that is widely consumed globally. Radish leaves are typically not consumed and regarded as by-products in agricultural, industrial, and domestic settings. Accumulating evidence suggests that radish leaves possess higher nutritional value compared to their roots, primarily due to their elevated levels of protein, ash, dietary fiber, and ascorbic acid. In light of the growing emphasis on waste reduction and value-added utilization, the application of radish by-products has garnered increasing attention. This study comprehensively reviews the phytochemical composition and pharmacological effects of radish leaves, a common agricultural by-product, detailing the structures of isolated compounds and discussing their chemical properties and bioactivities. When classified by their structural characteristics, these compounds encompass carbohydrates, enzymes, flavonoids, glucosinolates, organic acids, phenolic compounds, sulfur compounds, polysaccharides, and other constituents. Key bioactive components exhibit antioxidant properties, acetylcholinesterase inhibitory activity, antitussive effects, along with anticancer, antihypertensive, anti-inflammatory, antimicrobial, anti-obesity, antiulcerative, and intestinal motility stimulation activities. Radish leaf extracts demonstrate significant therapeutic potential across multiple disease areas, particularly in anticancer and antioxidant applications. Full article

Fracture-induced loss poses severe challenges to drilling operations, particularly under high-temperature and high-salinity conditions encountered in deep wells. Conventional plugging materials, characterized by relatively large particle sizes and poor structural integrity, often exhibit insufficient thermal stability and salt tolerance under extreme drilling conditions, making them prone to structural degradation and loss of adhesion, which ultimately leads to drilling fluid deterioration and downhole complications. To address this issue, a core–shell-structured microgel, ANDT-70 (named after the acronyms of 2-acrylamido-2-methylpropane sulfonic acid, N-vinyl-2-pyrrolidinone, N, N-dimethylacrylamide, dimethyl diallyl ammonium chloride, and titanium dioxide nanoparticles), was synthesized and systematically evaluated for its thermal stability, salt resistance, and interfacial adhesion capabilities. The structural evolution, dispersion behavior, and colloidal stability of the microgel were thoroughly characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), Raman spectroscopy, and Zeta potential analysis. Experimental results indicate that ANDT-70 exhibits excellent thermal stability and resistance to salt-induced degradation at 260 °C, maintaining its fundamental structure and performance under harsh high-temperature and high-salinity conditions, with a viscosity retention of 81.10% compared with ambient conditions. Compared to representative materials reported in the literature, ANDT-70 exhibited superior tolerance to ionic erosion in saline conditions. AFM analysis confirmed that ANDT-70 significantly improves bentonite slurry dispersion and reduces salt sensitivity risks. ANDT-70 stably adsorbs onto bentonite lamellae via the synergistic action of electrostatic interactions and hydrogen bonding, thereby forming a dense cementation network that markedly enhances the structural stability and adhesion of the system. This network significantly enhances the cohesion and structural integrity of drilling fluid systems under extreme conditions. In conclusion, ANDT-70 demonstrates strong potential as a high-performance functional microgel for enhancing the stability and effectiveness of advanced drilling fluids under complex geological environments. Full article

Person re-identification (Re-ID) has attracted considerable attention in the field of computer vision, primarily due to its critical role in video surveillance and public security applications. However, most existing Re-ID approaches rely on image-level erasing techniques, which may inadvertently remove fine-grained visual cues that are essential for accurate identification. To mitigate this limitation, we propose an effective feature erasing-based data augmentation framework that aims to explore discriminative information within individual samples and improve overall recognition performance. Specifically, we first introduce a diagonal swapping augmentation strategy to increase the diversity of the training samples. Secondly, we design a feature erasing-driven method applied to the extracted pedestrian feature to capture identity-relevant information at the feature level. Finally, extensive experiments demonstrate that our method achieves competitive performance compared to many representative approaches. Full article

This research examines the compounding risks of global environmental change, including climate change, environmental law, biodiversity loss, and pollution, which threaten the stability of economic systems worldwide. While digital technology and global governance regulation are increasingly being proposed as solutions, their synergistic potential in advancing economic sustainability has been less explored. How can these technologies mitigate environmental risks while promoting sustainable and equitable development, aligning with the Sustainable Development Goals? We analyze policy global environmental data from the World Bank and the United Nations, as well as literature reviews on digital interventions, artificial intelligence, and smart databases. Global environmental change presents economic stability and rule of law threats, and innovative governance responses are needed. This study evaluates the potential for digital technology to be leveraged to enhance climate resilience and regulatory systems and address key implementation, equity, and policy coherence deficits. Policy recommendations for aligning economic development trajectories with planetary boundaries emphasize that proactive digital governance integration is indispensable for decoupling growth from environmental degradation. However, fragmented governance and unequal access to technologies undermine scalability. Successful experiences demonstrate that integrated policies, combining incentives, data transparency, and multilateral coordination, deliver maximum economic and environmental co-benefits, matching digital innovation with good governance. We provide policymakers with an action plan to leverage technology as a multiplier of sustainability, prioritizing inclusive governance structures to address implementation gaps and inform legislation. Full article

Urban systems are the spatial carriers of social and economic relations at the regional level, and their relational and structural resilience are key to regional coordination and sustainable development, attracting widespread attention from scholars. In order to analyze the internal relationships of urban agglomerations in underdeveloped mountainous regions and optimize their spatial resource allocation and resilience, this study takes the urban agglomeration of Qiandongnan in China as an example and researches their internal relationships, development potential, and influencing factors based on quantitative methods such as social network analysis. The results show that the urban cluster in Qiandongnan presents “large dispersion and small aggregation” distribution characteristics, with the karst landscape as the main influencing factor; the spatial network exhibits a scale-free morphology with an obvious core–periphery structure, demonstrating moderate stability but poor completeness, weak equilibrium, and low overall resilience; only 15.61% of nodes demonstrate high competitiveness; urban units with functional roles serve as critical network nodes; urban units’ development potential is divided into three tiers (with 47.31% being medium-high), although overall levels remain low; and the development potential, overall network, individual network, and network resilience of urban units are all positively correlated, with economic and transportation development conditions being the main influencing factors. Based on the abovementioned findings, this study proposes a “multi-level resilience promotion path for network structure optimization”, which provides a theoretical basis and optimization control methods for the reconstruction and synergistic development of urban agglomerations. It also serves as a reference for the development planning of urban systems in other underdeveloped mountainous regions. Full article

Rationally designing and synthesizing chemosensors capable of simultaneously detecting both anions and cations via water content modulation is challenging. In this study, we synthesized and characterized a novel triazine calixarene derivative-based iodide and copper ion-selective fluorescent “turn-off” sensor. This dual-channeled fluorescent probe is able to recognize Cu²⁺ and I⁻ ions simultaneously in aqueous systems. The fluorescent sensor s4 was synthesized by displacement reaction of acridine with 1, 3-bis (dichloro-mono-triazinoxy) benzene in acetonitrile. Mass spectrometry (MS), UV-vis, and fluorescence spectra were acquired to characterize the fluorescence response of s4 to different cations and anions, while infrared (IR) spectroscopy and isothermal titration calorimetry (ITC) were employed to study the underlying selectivity mechanism of s4 to Cu²⁺ and I⁻. In detail, s4 displayed extremely high sensitivity to Cu²⁺ with over 80% fluorescence decrement caused by the paramagnetic nature of Cu²⁺ in the aqueous media. The reversible fluorescence response to Cu²⁺ and the responses to Cu²⁺ in the solution of other potential interferent cations, such as Li⁺, Na⁺, K⁺, Ca²⁺, Cd²⁺, Zn²⁺, Sr²⁺, Ni²⁺, Co²⁺ were also investigated. Probe s4 also exhibited very good fluorescence selectivity to iodide ions under various anion (F⁻, Cl⁻, Br⁻, NO₃⁻, HSO₄⁻, ClO₄⁻, PF₆⁻, AcO⁻, H₂PO₄⁻) interferences. In addition to the fluorescent response to I⁻, s4 showed a highly selective naked-eye-detectable color change from colorless to yellow with the other tested anions. Full article

Lithium hydride (LiH) is one promising material for nuclear reactor shielding due to its high hydrogen content, but its poor mechanical strength and thermal conductivity pose challenges for fabricating large, crack-free ceramic components via conventional sintering. This study explores microwave sintering as a potential solution to enhance heating uniformity and reduce thermal stress during densification of bulk LiH ceramics. Using implicit function and level set methods, we numerically simulated the microwave field distribution and thermal response in both stationary and rotating samples. The results show that rotational heating improves temperature uniformity by up to 12.9% for specific samples, although uniform temperature control remains difficult through rotation alone. To mitigate stress accumulation from thermal gradients, we propose a cyclic sintering–resting strategy, which leverages LiH’s tensile strength–temperature envelope to guide safe and efficient processing. This strategy successfully reduced total sintering time from several days to 1.63 h without inducing cracks. Our findings offer practical insights into optimizing microwave sintering parameters for large-scale LiH ceramic production and contribute to enabling its application in advanced nuclear shielding systems. Full article

The match relationship between urbanization and ecosystem services (ESs) is a cornerstone of achieving sustainable development. However, the evolution patterns of urbanization/ecosystem service (UES) synergies under economic polarization in the rapid urbanization process remain poorly understood. This study integrates bivariate local Moran’s index and correlation analysis methods to examine the match relationship between urbanization and three key ESs (water yield, carbon sequestration, and food production) from 2000 to 2020 and explores the impact of intra-city disparities on the match relationship of urbanization and ESs. The findings revealed that urbanization and three ecosystem services showed increasing trends during 2000–2020 simultaneously. The spatial aggregation pattern of urbanization and ecosystem services showed smaller variations from 2000 to 2020. There was a High-High aggregation between urbanization and water yield in urban built-up areas and primarily High-Low aggregations between urbanization, carbon sequestration, and food production. Furthermore, the impact of urbanization on ESs decreased with increasing urban polarization. In particular, the Beijing–Tianjin–Tangshan region still demonstrated pronounced economic polarization, suggesting disparities in economic development within its urban core. This study highlights the importance of mitigating the adverse effects of urban polarization on ESs and fostering resilient and sustainable urban ecosystems in rapidly developing regions. Full article

The philosophy of the Huayan school is founded on the dharmadhātu (法界) as its fundamental ontology, embodying the boundless truth of the cosmos and human existence. It seamlessly integrates the philosophical doctrine of the “perfect interpenetration and non-obstruction of Buddhist teachings”, while expounding the vast tenets of “principle (理), phenomena (事), wisdom (智), and practice (行),” all of which are encompassed within the comprehensive framework of the “four stages of faith–understanding–practice–realization (信解行证)”. The idea of “four dharmadhātus” (四法界), which was first systematically formulated by Master Chengguan, is considered one of the core doctrines of Huayan thought. However, contemporary scholarship has yet to provide a thorough elucidation of the relationship between the one true dharmadhātu (一真法界) and the four dharmadhātus, nor has it sufficiently addressed the notion that the four dharmadhātus are not merely a theoretical construct but also a genuine realization—a stage in the practice of spiritual cultivation. This study first explicates the conceptual significance of the four dharmadhātus, then analyzes the Huayan patriarchs’ interpretations of the one true dharmadhātu and the four dharmadhātus. It further explores the path to awakening through the interpenetration and non-obstruction of the four dharmadhātus and highlights the integration between the empirical world and the ideal world of Buddhist teachings. Ultimately, it argues that every realm and every stage within the dharmadhātu is perfectly complete and seamlessly interconnected. Full article

The Weather Research and Forecasting (WRF) model is employed to conduct numerical simulations and simulated acquisition of a 30-year (1993–2022) wind field dataset for the Bohai Sea. The simulated WRF wind field is subsequently used to drive the Simulating Waves Nearshore (SWAN) model, producing a corresponding wave field dataset for the same period in the Bohai Sea. Using these datasets, we analyzed the extreme value distributions of wind speed and significant wave height in the study area. The results reveal that both the annual mean wind speed and significant wave height exhibit a ring-like spatial pattern. The highest values are concentrated in the southern Liaodong Bay to the central Bohai Sea region, with a gradual radial decrease toward the periphery. Specifically, values decline from the center outward, from southeast to northwest, and from offshore to nearshore regions. The Gumbel extreme value distribution is applied to estimate 100-year return period extremes, yielding maximum wind speeds of 37 m/s and significant wave heights of 6 m in offshore areas. In nearshore regions, the 100-year return period wind speeds range between 20–25 m/s, while significant wave heights vary from 2 to 3 m. This study provides important scientific basis and decision-making reference for the design of offshore extreme conditions. Full article

This paper examines the Nanatsu-dera manuscript of the Dafangguang Rulai Xingqi Weimizang Jing (RXWJ) through the lens of scribal practices, with a focus on variant characters (yitizi, 異體字) and textual transmission. As a “separately produced scripture” (bie sheng jing, 別生經), the RXWJ was not included in the woodblock-printed editions of the Chinese Buddhist canon, which limited its circulation and made manuscript copies—such as the Nanatsu-dera manuscript—critical for reconstructing its textual evolution, transmission, and scribal modifications. A detailed paleographic investigation reveals scribal variants, orthographic fluidity, and phonetic substitutions, illustrating both intentional adaptations and unintentional errors in textual transmission. Comparative analysis with Dunhuang fragments and the Taishō Canon further contextualizes these variations, shedding light on the interpretive challenges scribes and readers face. The findings suggest that the Nanatsu-dera manuscript underwent three stages of transmission: (1) it originated from the Fifty-Fascicle edition circulating in China, (2) it was used as a base text (diben, 底本) for manuscript copying in Japan, and (3) it was subsequently re-copied and preliminarily collated by Japanese scribes. By tracing scribal variants and textual transmission through a paleographic approach, this research underscores the critical role of manuscript culture in preserving texts outside the canonical tradition, offering new insights into the mechanisms of Buddhist textual transmission and adaptation in medieval East Asia. Full article

Having adopted, appropriated, and altered Indian forms of Buddhism, various schools of Chinese Buddhist thought inherited and transformed essential orientations of both Buddhism and traditional Chinese philosophy insofar as it exhibits a tendency toward seeking universality in its understanding of the world. Within the works of prominent figures and schools such as Sengzhao and the Tiantai school, Huayan, the Consciousness-Only school, and Chan Buddhism, Chinese Buddhist thought integrates the diversity of phenomena through the notion of a unifying “mind-consciousness”. This approach creates the framework for understanding the relationship between humans and all things based on the comprehensive nature of consciousness. Given this foundation, Chinese Buddhist thought places a high value on the equality of all beings, advocates for dismantling distinctions between individuals and the world, and transcends the distinctions of reality to pursue universal unity. By dissolving the boundaries of existence and non-existence, the self and things, and the individual ego, this philosophical outlook lays a cognitive foundation for eradicating the “discriminating mind” in daily life and offers insights into overcoming separatism and isolationism. The Chinese Buddhist pursuit of universal consistency, which is simultaneously of this world yet transcendent, reflects Buddhism’s profound concern for humanity’s shared destiny. Full article

The Huayan Grotto in Anyue County is one of the most typical caves of the grottoes of Sichuan 四川 and Chongqing 重慶. Being well known for its grand scale and the beautiful style of its sculptures, the cave was designed and carved by the Liu-Zhao sect 柳趙教派 in eastern Sichuan during the Southern Song Dynasty. The Liu-Zhao sect is a local religious group that relies on grottoes and statues to state concepts, propagate ideas, and spread doctrines. The sect is good at integrating a variety of Buddhist thoughts to form its own unique theoretical and practical system. The large-scale statue-making activities under the auspices of the Liu-Zhao sect 柳趙教派 are a classic example of the localization of Buddhism in Southwest China. The ideological system of the Liu-Zhao sect is centered on Huayan, and Huayan Grotto is the very concentration of its special philosophy. This paper considers that the cave constitutes a holy place, with a theme of thoughts of Huayan, which was built based on important doctrines of two masters. Through the combination and arrangement of diversified images, the cave is so far the most complex, complete, and systematic visualized representation of the Huayan’s theory and practice. Inside the cave are carved full-length portraits of Li Tongxuan 李通玄, the Elder of Huayan, and Guifeng Zongmi 圭峰宗密, the fifth patriarch of the Huayan sect. There are also statues and inscriptions that illustrate Li’s thoughts, such as the Ten Assemblies in Ten Locations 十處十會and the Sudhana’s Pilgrimage 善財遍參based on Li’s exegetical writings on the Avataṃsaka Sūtra; the Three Saints of the Huayan School (Huayan sansheng 華嚴三聖) carved on the basis of Li’s pioneering idea about the trinity of three saints; and the mind-only verse 惟心偈, emphasizing mind as the foundation of Avataṃsaka practice. Zongmi’s Avataṃsaka thoughts were mainly expounded through a series of commentaries on the Sutra of Perfect Enlightenment 大方廣圓覺修多羅了義經, to which the impressive Twelve Bodhisattvas of Perfect Enlightenment are directly related. In addition to the theoretical system, the cave offers two means for Avataṃsaka practice. Highly qualified Avataṃsaka practitioners practice by viewing the Trinity of Three Saints and the Buddha’s Light, and then they go through five phases of fruition to attain Buddhahood, which is the Avataṃsaka practice dominated by Li Tongxuan’s thoughts. Less qualified practitioners practice through repentance liturgies and sitting in meditation at the Ritual Site of Perfect Enlightenment, which is the practice of Perfect Enlightenment advocated by Zongmi 宗密. Full article

Chiral gold nanomaterials have promising applications in biomedicine, catalysis, optics and other fields. However, the complexity of their chiral sources has led to many challenges in terms of the functional design and controlled synthesis. In this paper, we systematically review the development history of chiral Au nanomaterials; deeply analyze the synthesis strategy, chiral construction mechanism, and performance optimization pathway; and discuss the formation mechanism in light of the progress of cutting-edge research to look into the future direction of development. The aim is to provide theoretical and methodological support for the controllable synthesis of chiral gold nanomaterials. Full article