Results 171 to 180 of about 3,645,605 (374)

Transforming the Poison Effects of Water Vapor into Benefits Over Adjustable Dual Acid Sites for Stable Plasma‐Catalysis

open access: yesAdvanced Science, EarlyView.
YxMnyOx+2y catalyst provides dual active sites of Lewis acid (Y3+) and Mn for the co‐adsorption of H2O and O3, and the fast dissociation of adsorbed H2O to surface *OH. Then, a newly OH‐accompanied pathway for O3 decomposition is formed, transforming H2O to active ·OH radical, with the assistance of high energy electrons in the plasma.
Si Chen   +7 more
wiley   +1 more source

RevPRAG: Revealing Poisoning Attacks in Retrieval-Augmented Generation through LLM Activation Analysis [PDF]

open access: yesarXiv
Retrieval-Augmented Generation (RAG) enriches the input to LLMs by retrieving information from the relevant knowledge database, enabling them to produce responses that are more accurate and contextually appropriate. It is worth noting that the knowledge database, being sourced from publicly available channels such as Wikipedia, inevitably introduces a ...
arxiv  

Ligand Engineering of Co‐N4 Single‐Atom Catalysts for Highly‐Active and Stable Acidic Oxygen Evolution

open access: yesAdvanced Science, EarlyView.
This study highlights the effects of metal – ligand distance on d electron structure and orbital configuration of single atom catalysts (SACs) and their corresponding oxygen evolution reaction (OER) catalytic activity and stability based on the ligand engineering.
Taeyoung Jeong   +6 more
wiley   +1 more source

Two‐Step Tandem Catalysis for High‐Efficiency Ammonia Synthesis Via Nitrate Reduction on Anion‐Intercalated CoNi LDH and Cu/Cu2O

open access: yesAdvanced Science, EarlyView.
By integrating Cu/Cu2O and CoNi LDH, tandem kinetic descriptors, including a volcano curve, are employed to predict rate constants, facilitating ideal kinetic matching for efficient ammonia synthesis. The highest ammonia yield (1.12 mmol cm−2 h−1) and Faraday efficiency (99.78%) are achieved by rate matching between Cu/Cu2O and MoO4‐CoNi LDH.
Changzheng Lin   +11 more
wiley   +1 more source

Neighborhood disparities and the burden of lead poisoning. [PDF]

open access: yesPediatr Res, 2023
Hauptman M   +4 more
europepmc   +1 more source

Show Me Your Code! Kill Code Poisoning: A Lightweight Method Based on Code Naturalness [PDF]

open access: yesarXiv
Neural code models (NCMs) have demonstrated extraordinary capabilities in code intelligence tasks. Meanwhile, the security of NCMs and NCMs-based systems has garnered increasing attention. In particular, NCMs are often trained on large-scale data from potentially untrustworthy sources, providing attackers with the opportunity to manipulate them by ...
arxiv  

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