Xiamen University

Brønsted Acid-Catalyzed Nitroso-Diels–Alder Reaction of 2-Trifluoroacetamido-1,3-dienes

Abstract The nitroso-Diels–Alder (NDA) reaction represents a powerful strategy for the assembly of 3,6-dihydro-1,2-oxazines for nearly a century, owing to its efficiency and broad utility in synthesizing natural products and bioactive molecules. Despite these advancements, tradit...

Beyond Co-Localization: DeepCoEx Learns Exclusion-Aware Spatial Representations in Mass Spectrometry Imaging via Dual-Contrastive Learning

Abstract Mass spectrometry imaging (MSI) provides spatially resolved molecular profiles, yet the existing computational workflows are heavily biased toward co-localization and remain limited in characterizing exclusion-like spatial relationships, especially when reliable negative...

Well-being in digital-free tourism: A mixed-methods rhythmanalysis

Tourism research has largely treated well-being as a motivation or outcome, neglecting how it unfolds in-situ and relying on self-report data. Through a mixed-methods rhythmanalysis, this study examines how well-being emerges and evolves in digital-free tourism. Following 23 part...

Intelligent Inverse Design of Meta‐Absorbers Based on Reversible Deep Learning

ABSTRACT Optical meta‐absorbers are artificially engineered materials capable of trapping light in a highly controllable manner, rendering them attractive for a wide range of applications. Artificial intelligence provides powerful tools for the efficient design of such complex st...

FeBr3-Catalyzed Aromatization-C–O Bond Cleavage Process for Construction of Aryl-Substituted Prostaglandin Skeleton

Abstract Prostaglandins exhibit therapeutic potential in multiple diseases and the incorporation of aromatic rings into their side chains can often enhance their corresponding biological activities. Although more than 20 kinds of drugs are currently used in clinical practice, the...

Electrical insulation enhancement of the Al 2 O 3 composite films at high temperature by oxygen vacancy suppression

Abstract The electrical insulation film is critical for the reliable operation of Ultra-high temperature thin-film sensors (UTTSs) at elevated temperatures. However, the resistance of the insulation film easily decline at high temperatures due to the formation of the oxygen vacan...

Resolving the LiFePO4 Battery State beyond Voltage-Based Diagnostics Using Surface-Scan MRI

Reliable assessment of state of charge (SoC) and state of health (SoH) in commercial batteries remains a major challenge because their closed architecture obscures the underlying electrochemical, structural, and thermal processes, while existing diagnostic methods often provide o...

Unravelling the links between stress perception, anxiety, and smartphone addiction in adolescents: A two-wave longitudinal study

BACKGROUND: The rise of smartphone addiction among adolescents, especially in China where internet and mobile usage are notably high, has prompted concerns about its impacts on mental health and social skills. Previous research has mainly used cross-sectional approaches, which ar...

Tailoring the thermal conductivity of boron nitride-based materials through microstructural and architectural design for thermal management applications

The escalating power density of modern electronics has intensified the demand for thermal interface materials (TIMs) that simultaneously deliver high thermal conductivity and reliable electrical insulation. Hexagonal boron nitride (h-BN) has emerged as a leading filler candidate;...

Beyond scenic tea tourism: Reframing therapeutic experience through enabling places

This study conceptualizes therapeutic experience in tea tourism as relationally assembled through material, social, and affective enabling resources. Drawing on a constructivist grounded theory study conducted in Wuyishan, China, we identify nine enabling resources and three enab...

Cooperative Agostic‐Type C─H···Cu, Quadrupolar Cu···CO 2 , and C─H···O/π Interactions in an Ultra‐Microporous MOF Enable One‐Step Methane Purification From Quaternary C 3 H 8 /C 2 H 6 /CO 2 /CH 4

ABSTRACT While agostic‐type C─H···metal σ‐interactions are central to organometallic catalysis, their role in gas separation remains elusive. In this study, a robust phosphine‐functionalized ultra‐microporous Cu(I/II)‐organic framework, LIFM‐XYY‐15, featuring open metal sites (OM...

Few-shot learning for expert consensus severity stratification in newly diagnosed crohn’s disease

Early and accurate assessment of disease severity is important for standardizing baseline risk stratification and supporting treatment planning in newly diagnosed Crohn’s disease. This study used electronic medical record data, a few-shot learning algorithm, and SHAP-based interp...

Graphene-Like-Armored Nanosheet Assemblies toward Fast and Stable High-Mass-Loading Sodium Storage

Abstract Sodium-ion batteries represent promising energy storage devices, yet their deployment is severely hampered by sluggish ion-transport kinetics and unstable electrode–electrolyte interfacial chemistry that deteriorate rate capability and cycling lifespan, particularly unde...

On the significance of absolute and convective instabilities in transitional hypersonic compression ramp flows

In real-life tunnel or flight environments, the laminar–turbulent transition of compression ramp flows can be initiated by absolute and/or convective instabilities. Currently, the relative significance of the two instabilities in such flows remains unclear. This paper addresses t...

Bistability and Noise-Induced Evasion in Tumor-Immune Dynamics with Antigen Accumulation and Immune Escape

Abstract. Tumor-immune interactions are shaped by both antigenic heterogeneity and stochastic perturbations in the tumor microenvironment, yet the mathematical mechanisms underlying immune phase transitions remain poorly understood. We propose a four-compartment dynamical model t...

Spatiotemporal Regulation of Hierarchical Assembly of Hydroxyapatite for Enamel Remineralization

ABSTRACT The hierarchical structure of tooth enamel confers exceptional mechanical robustness, yet its biomimetic regeneration remains a significant challenge. We develop an enzymatic mineralization system (EMS) that achieves enamel regeneration by directing the hierarchical asse...

A Highly Sensitive SERS Platform Based on Silver Nanocubes for the Detection of Ethylparaben in Aquatic Environments

Abstract Ethylparaben (EP), a widely used preservative, is ubiquitous in aquatic environments and poses potential ecological risks. To address this issue, there is an urgent need to develop portable, rapid, and sensitive detection technologies. Hence, this study constructed a sur...

Topological pressure and equilibrium state for certain correspondences

In \cite{Miller-Akin1999}, Miller and Akin investigated the invariant measures for correspondences, which are also known as upper semi-continuous set-valued maps. Recently, the variational principle and thermodynamic formalism for forward expansive correspondences were studied by...

Climatology and mechanisms of low-level jets over southeastern coast of mainland China during the early-summer rainy season

Abstract Low-level jets (LLJs) significantly impact early-summer rainy season over the southeastern coast of mainland China (SECC), yet northerly LLJs over this region remain understudied compared to their southerly counterparts. Utilizing decade-long hourly ERA5 reanalysis, this...

N -Acyl Hemiperaminals: From Bioactive Skeleton Editing of Artemisinin to Programmable Handles for α-Amido Functionalization and Bioactive Peroxides

Abstract Late-stage molecular editing is vital for drug diversification and SAR studies. However, programmable peroxide-based editing handles for amides, α-amino acids, peptide- and drug-relevant scaffolds remain largely unexplored, particularly N-acyl hemiperaminals. Inspired by...