University of Chinese Academy of Sciences

Warm-sector heavy rainfall over the eastern China plains: identification, characteristics, and precursor dynamic signals

Abstract. Warm-sector heavy rainfall (WSHR) features small spatial scales, posing critical forecast challenges, while its fractional contribution to regional heavy rainfall and its short-term precursors remain poorly quantified. Drawing on 2021–2025 warm-season (June–September) o...

Repeatable Velocity Fine Structure of Lightning K‐Leaders From a Single VHF Interferometer Made Three‐Dimensional

Abstract K‐processes re‐illuminate lightning channels at speeds of order 10 7 m s −1 , but measuring their three‐dimensional (3‐D) propagation velocity has required multi‐station systems available at few sites. An error‐isomorphism range inversion upgrades a single very‐high‐freq...

Structure‐Property Engineering in Ag 23 Nanoclusters for Electrocatalytic Nitrate Reduction

ABSTRACT Electrocatalytic nitrate reduction reaction (NO 3 RR) provides a sustainable pathway for ambient ammonia synthesis; however, achieving concurrent high activity, high selectivity and appropriate stability of catalysts remains a substantial challenge. Here we report the sy...

DSCrisk: A dual-view and substructure aware based method for drug-drug interaction risk-level prediction enhanced by contrastive learning

Combination pharmacotherapy remains a fundamental strategy in contemporary clinical practice. However, the concurrent use of multiple drugs substantially increases the risk of harmful drug-drug interaction events (DDIEs). Developing reliable computational methods for DDIE detecti...

Trajectory-Constrained Feature Transformation Optimization Framework for Stable Tabular Data Reprogramming

Tabular data reprogramming is a cornerstone of Data-Centric AI, which seeks to mathematically reconfigure raw features into more expressive and model-efficient representations. This process has traditionally relied on extensive manual engineering. Further, recent automated featur...

Interfacial Water‐Regulated High‐Entropy Intermetallic Catalysts for Selective Ethylene Glycol Upgrading and Self‐Powered Hydrogen Production

ABSTRACT Selective electrochemical upgrading of ethylene glycol (EG) to glycolic acid (GA) coupled with hydrogen evolution provides a promising pathway for chemical‐energy co‐production, yet remains challenged by CO poisoning, excessive C‐C bond cleavage, and uncontrolled oxygena...

Ammonium Chloride and Peroxide: A Metal‐Free Aqueous Strategy for Oxime Synthesis

A metal‐free, aqueous protocol enables the synthesis of oximes from carbonyls using NH 4 Cl and H 2 O 2 . A radical mechanism involving in situ hydroxylamine generation bypasses the use of unstable salts. Monoethanolamine (MEA) serves as an essential additive, facilitating the co...

Structural Variants in the Human Genome Associated With Gut Microbiome and Blood Metabolic Traits With Potential Causal Links

ABSTRACT Research on genetic variants affecting the gut microbiome and blood metabolites has mainly focused on single nucleotide variants (SNPs), leaving structural variants (SVs) largely unexplored. Here, we analyzed high‐coverage (∼42×) whole‐genome sequencing data from 2002 in...

Mass Spectrometry Imaging Reveals Biodistribution and Biotransformation of Black Phosphorus

ABSTRACT Black phosphorus (BP) holds significant potential in biomedicine, biosensing, and phototherapy; however, its instability and the poor understanding of its in vivo fate have limited its applications. Here, we developed an integrated label‐free mass spectrometry imaging (M...

UBE2K-FBXO11 complex activates Wnt signaling by stabilizing β-catenin through lysine 63-linked polyubiquitination

Abstract Β-catenin is regulated by phosphorylation and lysine (K)48-linked ubiquitination, which target it for proteasomal degradation. While the degradation machinery of β-catenin, including the destruction complex, has been extensively studied, regulators that stabilize β-caten...

Stabilization of 3.5-valent vanadium electrolytes via thermodynamic phase-boundary mapping

Despite the potential of vanadium flow batteries (VFBs) for large-scale energy storage, their commercialization is still hindered by the poor thermal stability of VO 2 + in the positive electrolyte. Additives have improved the electrolyte to some extent, yet they are usually intr...

Navigating resource constraints in the Yellow River Basin: Drivers and coupling dynamics of the Water-Land-Energy-Carbon nexus

Facing critical resource depletion in the Yellow River Basin, this study establishes a unified framework to analyze the coupled interactions of Water, Land, Energy, and Carbon (WLEC). We quantified WLEC resource distribution, assessed the spatiotemporal dynamics of coupling coord...

Association of genetic risk, lifestyle, and their interaction with MRI-based brain aging

Individual brain aging is shaped by both genetic and environmental factors, yet their combined influence remains poorly understood. Using multimodal MRI, genomic data, and lifestyle measures from 46,843 participants in the UK Biobank, we developed and validated a multimodal brain...

Triple-Encoding Platform for Multiplexed In Situ Profiling of Extracellular Vesicle miRNAs Enables Precision Diagnosis of Ovarian Cancer

Abstract Ovarian cancer, the most lethal gynecologic malignancy, urgently demands early and accurate diagnostic methods. Tumor-derived extracellular vesicles (tEVs) hold great promise as noninvasive biomarkers, yet their clinical translation is severely hampered by inherent heter...

36.5 W high-power 976 nm first-order DFB semiconductor diode

High-power 976 nm semiconductor lasers are the core pump sources for ytterbium-doped fiber lasers (YDFLs). This paper reports a 976 nm distributed feedback (DFB) semiconductor laser that achieves an outstanding high-power continuous-wave (CW) output. Based on an epitaxial structu...

Intensification of near-inertial currents in the Atlantic Ocean over the past two decades

Near-inertial currents (NICs) play a key role in surface material redistribution and ocean mixing, yet their long-term variability remains poorly known. Using in situ current measurements from surface drifters, we provide observational evidence for a pronounced intensification of...

Optimized Land–Water Management Expands Afforestation Potential Under Land and Human Water‐Use Constraints

ABSTRACT Afforestation is a low‐cost and high‐potential climate change mitigation strategy, but its feasibility remains highly uncertain because most existing assessments focus primarily on biophysical suitability and land resource constraints, while largely overlooking the criti...

DSFormer: An Enhanced Dual-Selective Fusion Transformer Framework for Hyperspectral Image Classification++

Hyperspectral image classification requires joint modeling of spectral signatures and spatial structure. In patch-based classification, each input patch is assigned the label of its center pixel, although neighboring pixels may belong to different land-cover classes. This setting...

Automated Construction of Geospatial Analysis Workflows: Recursive Solving of Elementary Modeling Questions Adaptive to Workflow Construction Contexts

ABSTRACT Geospatial analysis workflows are widely used to address complex geographic problems, but their construction is challenging due to dynamic contextual factors like the characteristics of the study area, geo‐models, and datasets during construction process. Current automat...

Nonfreeness for rational two-parabolic groups with numerator 24

This preprint presents a proof of nonfreeness for rational two-parabolic matrix groups with numerator 24. For every integer denominator r with |r| > 6, the groups at parameter 24/r are nonfree over both the rational and complex numbers, in SL(2,Q) and SL(2,C). For each such param...