Nanjing University of Information Science and Technology

Unsaturated Carboxylates as Electrophilic Synthons for Transition‐Metal‐Catalyst‐Free Electroreductive Deoxygenative Coupling

ABSTRACT The use of ester‐derived electrophiles in transition‐metal‐free electroreductive C(sp 3 )─C(sp 3 ) bond formation remains largely unexplored. Herein, we report a sacrificial‐anode‐enabled electroreductive cross‐coupling of simple unsaturated carboxylates with unactivated...

Unsaturated Carboxylates as Electrophilic Synthons for Transition‐Metal‐Catalyst‐Free Electroreductive Deoxygenative Coupling

ABSTRACT The use of ester‐derived electrophiles in transition‐metal‐free electroreductive C(sp 3 )─C(sp 3 ) bond formation remains largely unexplored. Herein, we report a sacrificial‐anode‐enabled electroreductive cross‐coupling of simple unsaturated carboxylates with unactivated...

Spin-State Engineering for Multi-Electron Reactions: Active Sites and Reaction Mechanisms

Abstract Multi-electron-proton coupling reactions are fundamental in renewable energy conversion and environmental cleanup. However, achieving high catalytic efficiency and product selectivity remains a formidable challenge, primarily due to the complex transformations of interme...

Guarding the Lifeline: A First Look and Automated Defect Diagnosis for ROS Central Index

The Robot Operating System (ROS) relies on a centralized dependency index, the rosdistro central index , to manage packages across its heterogeneous software ecosystem, which integrates independently evolving Operating System (OS) repositories for system libraries, ROS repositori...

Impacts of South Asian aerosol inflow over Mount Qomolangma on downstream cloud–precipitation processes through a long-range ice-crystal “seeding” effect

Mount Qomolangma (MQ) serves as a natural laboratory for investigating aerosol–cloud–precipitation interactions over the Tibetan Plateau (TP). Using satellite and comprehensive ground-based observations, we identify pronounced ice-cloud activation associated with transported exog...

Non‐Coding Transcripts From Diversified Members of IgLec Family Protect Antiviral Effectors From Viral miRNA

ABSTRACT Immune gene families frequently produce numerous non‐coding transcripts, yet their biological functions remain largely unexplored. Here, using the arthropod immunoglobulin domain‐containing lectin ( IgLec ) family as a paradigm, we provide evidence that this complexity m...

Freezing-Tolerant and Stretchable Organohydrogels for Triboelectric Nanogenerators and Strain Sensors

Abstract The rapid advancement of wearable electronics necessitates the development of flexible, durable, and environmentally stable energy and sensing materials. However, conventional hydrogels often suffer from poor mechanical robustness, rapid dehydration, and freezing at subz...

An underappreciated cyclonic-like circulation affects high summer ozone in North China Plain

China continues to experience severe ozone pollution, particularly over the North China Plain (NCP) during summer. Ozone pollution is generally considered to be associated with anticyclonic circulation. However, this study reveals that a previously underappreciated cyclonic-like...

The role of permafrost at Zonag Lake with its 2011 outburst: Insights from long-term and short-term perspectives

Lakes across the Qinghai-Tibet Plateau (QTP) are experiencing widespread and accelerated expansion, with Zonag Lake representing an extreme case following its catastrophic overflow and outburst in 2011. However, the characteristics and changes of permafrost extensively distribute...

Scenario-driven ozone projections and associated impact on mortality over Africa with an integrated machine learning framework

Ozone (O 3 ), a major tropospheric air pollutant, poses significant threats to public health and ecosystems, especially across Africa, where O 3 concentrations have experienced pronounced increases in recent decades. This study employs an interpretable machine learning (ML) model...

Characteristic cycle and wild Lefschetz theorems

Abstract By relying on a new approach to Lefschetz type questions based on Beilinson’s singular support and Saito’s characteristic cycle, we prove an instance of the wild Lefschetz theorem envisioned by Deligne. Our main tool are new finiteness results for the characteristic cycl...

Risk–service mismatches reveal conservation and restoration priorities in China’s major urban agglomerations

Rapid urbanization can expose high-value ecosystems to disturbance while degrading ecological functions elsewhere. We combined the landscape ecological risk index ( LERI ), ecosystem service value ( ESV ), spatially validated machine learning and bivariate zoning to assess risk–s...

Microbial Mechanisms of Biofilm Reactor Degradation of Refractory Phenolic Compounds Driven by Dissolved Oxygen Gradient

Abstract This study investigated how progressively enhanced oxygen supply affected mixed-phenolic-compound removal and microbial niche differentiation in biofilm reactors. Four 250 mL reactors containing suspended sludge and polyurethane (PU) carriers treated synthetic wastewater...

Electrostatic Control of Li+ Density and Transport Rate in Double-Gated van der Waals Devices

Abstract Ion transport in crystalline hosts is controlled by an applied potential that simultaneously sets ionic distribution and transport rate, restricting operation to a one-dimensional control space. Here we show that the transport rate of Li+ ions in double-gated van der Waa...

PVmatAgent: A Large Language Model (LLM) Agent for Perovskite Photovoltaic Material Design and Analysis

ABSTRACT The rapid advancement of large language models (LLMs) has opened new opportunities for materials informatics. However, LLMs fall short in photovoltaic (PV) material design due to their lack of domain grounding, unreliable outputs, and inability to perform integrated comp...

Role of low-level jet evolution in vertical aerosol redistribution: a Doppler wind lidar study over East China

Low-level jets (LLJs) play an important role in aerosol transport and boundary-layer processes. This study utilizes coherent Doppler wind lidar observations to investigate the relationship between LLJ evolution and vertical aerosol redistribution during two dust episodes over Hef...

Seasonal attribution disentangles physiological and available water-energy effects on hydrological changes under climate and CO2 changes in subtropical plantation catchment

Abstract Precipitation (P) partitioning, a critical process for local water management, exhibits complex responses to climate change and elevated atmospheric CO 2 (eCO 2 ) through plant physiological and available water-energy effects, yet disentangling these effects at the seaso...

Probing context-sensitive expectations through user-driven personality configuration in conversational AI

Abstract Conversational agents are increasingly expected to adapt across contexts and evolve their personalities through interactions, yet most remain static once configured. We present an exploratory study of how user expectations form and evolve when agent personality is made d...

Evaluating the Resilience of Cold-Region Rice Varieties to Climate Variability and Change Using the BDH-Rice Model: A Case Study in the Sanjiang Plain

The Sanjiang Plain is a key cold-region rice production area in Northeast China, where climate variability and warming may alter the adaptability and yield stability of rice varieties. Identifying varieties with both high yield potential and stable performance under current and f...

A security risk assessment approach based on improved PSO-BPNN for intelligent network information systems

Smart cities have brought numerous benefits to improve citizens’ living quality, but they have also brought greater cyber security challenges. Risk assessment is a commonly used approach to enhance the cyber security of information systems. However, information systems in smart c...