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Chinese Chemical Letters 2000年第3期11卷 219-222页

作者： Ai Ping FU, Dong Mei du, zheng yu ZHOU (Department of Chemistry, Qufu Normal University,Shandong. Qufu 273165 State Key Laboratory Crystal Materials Shandong University, Shandong. Jinan 230100) Department of Chemistry Qufu Normal University Shandong Qufu 273165 China State Key Lab. Crystal Materials Shandong University Shandong Jinan 250100 China

DFT/BLYP method is used to theoretically investigate the electron transfer (ET) reactions between M (Li, Na, Mg)-C_6H_6 and M+-C_6H_6 complexes in the gas phase. The geometry optimization of the precursor complexes and the transition state in the process of ET reaction was performed at 6-31G basis set level. The activation energy. the coupling matrix element and the rate constant of the ET reaction are calculated at semi-quantitative level.

关键词： M-C_6H_6 complex density functional theory rate constant.

石学敏院士针刺治疗急症、疑难病症学术思想浅析

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中国针灸 2010年第12期30卷 1025-1028页

作者：杜宇征天津中医药大学第一附属医院针灸科天津300193

在传统的针灸理论及现代医学知识的指导下,结合长期的临床实践,石学敏院士突破了中医神与脑府的认识,创立了"醒神、调神、安神"的学术思想,倡导治神思想应用于临床针刺中,将"醒神""调神""安神"法用于针灸治疗急危重症及疑难病症,取得了... 详细信息

在传统的针灸理论及现代医学知识的指导下,结合长期的临床实践,石学敏院士突破了中医神与脑府的认识,创立了"醒神、调神、安神"的学术思想,倡导治神思想应用于临床针刺中,将"醒神""调神""安神"法用于针灸治疗急危重症及疑难病症,取得了显著效果。本文主要对石学敏院士用"醒神""调神""安神"法并施以严格的手法量学操作,治疗中风、中枢性呼衰、心绞痛、一过性晕厥、假性延髓麻痹、血管性痴呆、癃闭等急危重症及疑难病症作一介绍。

关键词：名医经验针灸急症疑难病症医学家石学敏

Precise gradient separation of nanoparticles using reduced graphene oxide-polyoxomolybdate membranes

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Science China Chemistry 2025年第1期68卷 209-216页

作者： Yixin Yang Wanlei Zhao Ruoxuan zheng Hongqiang Li Wei Chen yu-Fei Song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Quzhou Institute for Innovation in Resource Chemical Engineering

The purification and size sieving of nanoparticles （NPs） represents a significant scientific ***,the r GO-polyoxometalates (POMs=PMo12,Mo132and Mo368) membranes were fabricated successfully via a simple and scalable POMsassisted in-situ photoreduction *** the mass ratio of r GO to PMo12was 1:30,the resultant r GO-PMo12membranes with highly ordered and uniform nanochannels of 1.0 nm can be obtained,which showed an accurate carbon quantum dots（CQDs） separation with a cut-off size approximately 1.0 *** increase of the size of the interlayered POMs from PMo12（1.0 nm）,{Mo132}（2.9 nm） to{Mo368}（3.8 nm）,the resultant r GO-PMo12,r GO-Mo132and r GO-Mo368exhibited precise gradient separation of CQDs and Au nanoparticles by size exclusion *** results pave a promising way to construct new twodimensional （2D） membranes for highly efficient size-selective separation.

关键词： reduced graphene oxide polyoxometalates membranes gradient separation nanoparticles

基于WATVFEMD-SAM的轴承声信号故障诊断

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组合机床与自动化加工技术 2021年第10期 23-27页

作者：杜正昱马洁北京信息科技大学机电工程学院北京100192

滚动轴承声信号与振动信号相比其信噪比更低,此外还会受到强脉冲噪声的影响。频谱幅度调制(SAM)是一种新的故障特征提取方法,该方法能够有效识别脉冲噪声并对信号进行非线性滤波。然而尽管其可抑制脉冲噪声,但依然会受到其他背景噪声的... 详细信息

滚动轴承声信号与振动信号相比其信噪比更低,此外还会受到强脉冲噪声的影响。频谱幅度调制(SAM)是一种新的故障特征提取方法,该方法能够有效识别脉冲噪声并对信号进行非线性滤波。然而尽管其可抑制脉冲噪声,但依然会受到其他背景噪声的干扰导致其滤波效果受到影响。针对上述问题,提出一种加权平均时变滤波经验模态分解WATVFEMD及SAM的滚动轴承声信号特征提取方法。首先对声信号进行TVFEMD分解;其次,提出了一种强调敏感分量的新型指标,利用该指标对各个IMFs加权并重构为WATVFEMD信号;最后,对重构信号进行SAM并提取故障特征频率。仿真研究及实验表明,相比常用的快速谱峭度方法,所提出的WATVFEMD-SAM能够更加有效地提取声信号故障特征频率,该方法的有效性得以验证。

关键词：加权平均时变滤波经验模态分解声信号频谱幅度调制特征提取

Personalized federated few-shot node classification

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Science China(Information Sciences) 2025年第1期68卷 204-218页

作者： yunfeng ZHAO Xintong HE Guoxian yu Jun WANG Yongqing zheng Carlotta DOMENICONI School of Software Shandong University Joint Sdu-NTU Centre for Artificial Intelligence Research Shandong University Department of Mathematics National University of Singapore Department of Computer Science George Mason University

Personalized federated learning(PFL) aims to train customized models for individual clients in a decentralized setting, with the account of non-independent and identically distributed data across clients. However, most PFL methods adopt uniform classification layers for diverse clients and give rise to error-prone predictions, due to the task heterogeneity notably prominent in decentralized graph data scenarios. Although some PFL solutions setup client-specific classification layers for each client and optimize them only locally, they are corrupted with limited local training data. We propose an innovative solution called federated parameter decoupling and node augmentation(Fed PANo) to address these problems and to achieve personalized federated few-shot node classification, which is a prevalent and challenging but unexplored topic. Specifically, Fed PANo first separates the local model into the GNN and classifier to handle unique client-specific task variations. The GNN is trained through federated learning to capture shared knowledge of graph nodes across clients, while the classifier is custom-designed and trained individually for each client. Additionally, a generic classifier shared among clients is adopted to encourage the GNN's grasp of shared information. Then Fed PANo further proposes the node generator along with its local and collaborative training strategies to deal with the node scarcity of clients. Extensive experimental results on benchmark datasets confirm that Fed PANo outperforms eight competitive baselines across different settings.

关键词： personalized federated learning few-shot learning node classification task heterogeneity parameter decoupling node augmentation

Small modifications of endo-functionalized cavities lead to large changes in molecular interaction in water

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Science China Chemistry 2025年第1期68卷 369-376页

作者： Song-Meng Wang Hao Nian Yan-Fang Wang Li-Shuo zheng yu-Tao zheng Yi-Wei Dong Liping Huang Xiaoping Wang Wei Jiang Liu-Pan Yang Department of Chemistry Southern University of Science and Technology School of Chemistry and Pharmaceutical Sciences State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesGuangxi Normal University School of Pharmaceutical Science Hengyang Medical School University of South China

Studying molecular recognition in aqueous environments is crucial for understanding biological processes. Herein, we present a series of N-doped endo-functionalized anthracene-based cavities by introducing inward-directed pyridine units. The subtle modifications can significantly affect the binding properties of these receptors, which is similar to the mutations in biological systems. Combining theoretical calculations and molecular recognition experiments demonstrated that these “mutations” have an impact on the hydrophobicity and charge distribution of the hosts, consequently significantly influencing molecular *** is crucial for understanding the intricate mechanisms of molecular-level interactions in biological receptors.

关键词： host-guest interaction hydrophobic effect endo-functionalized cavity mutation pyridine

Influence of introducing Zr,Ti,Nb and Ce elements on externally solidified crystals and mechanical properties of high-pressure die-casting Al–Si alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 147-153页

作者： Junjie Li Wenbo yu Zhenyu Sun Weichen zheng Liangwei Zhang Yanling Xue Wenning Liu Shoumei Xiong Center of Materials Science and Engineering School of Mechanical and Electronic Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Traffic&Transportation Engineering Central South UniversityChangsha 410075China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

High pressure die casting(HPDC)AlSi10Mn Mg alloy castings are widely used in the automobile *** can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress arouses the deformation of large integrated ***,the development of non-heat treatment Al alloys is becoming the hot *** addition,HPDC contains externally solidified crystals(ESCs),which are detrimental to the mechanical properties of *** achieve high strength and toughness of non-heat treatment die-casting Al-Si alloy,we used AlSi9Mn alloy as matrix with the introduction of Zr,Ti,Nb,and *** influences on ESCs and mechanical properties were systematically investigated through three-dimensional reconstruction and thermodynamic *** results reveal that the addition of Ti increased ESCs'size and porosity,while the introduction of Nb refined ESCs and decreased ***,large-sized Al_3(Zr,Ti)phases formed and degraded the mechanical *** introduction of Ce resulted in the poisoning effect and reduced mechanical properties.

关键词： aluminium alloy high-pressure die-casting externally solidified crystals non-heat treatment

聚光型太阳能热发电系统非均匀辐射能流特性及解决方法的研究进展

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科学通报 2016年第30期61卷 3208-3237,3289-3290页

作者：何雅玲王坤杜保存邱羽郑章靖梁奇西安交通大学热流科学与工程教育部重点实验室西安710049

分别对槽式、线性菲涅尔式、塔式、碟式4种聚光型太阳能热发电技术中的聚光集热系统内非均匀辐射能流分布特性及由此带来的问题和挑战进行了总结,重点回顾了针对非均匀辐射能流特性带来的问题所提出的解决方法的研究进展,包括作者团队... 详细信息

分别对槽式、线性菲涅尔式、塔式、碟式4种聚光型太阳能热发电技术中的聚光集热系统内非均匀辐射能流分布特性及由此带来的问题和挑战进行了总结,重点回顾了针对非均匀辐射能流特性带来的问题所提出的解决方法的研究进展,包括作者团队近年来在该方面的相关研究.分析看出,吸热器内的太阳能辐射能流分布表现出强烈的非均匀性,不均匀的辐射能流分布必然造成吸热表面/吸热体内不均匀的温度分布,即出现过高的局部温度、过大的温度梯度.局部温度过高容易造成局部热斑烧毁、吸热涂层性能减退、传热流体变性劣化;温度梯度过大导致出现热应力热变形,容易造成吸热器关键部件的结构失稳破坏.接着指出,非均匀的能流分布之所以给聚光集热系统带来诸多挑战,其根源在于吸热器内均匀的吸热能力与吸热表面/吸热体内非均匀的能流分布之间不能相互匹配,进而导致吸热表面/吸热体出现不均匀的温度分布.据此,作者将现有的解决方法总结分类为两种途径:(1)优化吸热器的"吸热"能力,使之与非均匀分布的太阳能流相匹配;(2)均化"聚光"系统内吸热表面/吸热体内的太阳能流分布,使之吸热器内均匀的吸热能力相匹配.最后,本文提出了解决聚光集热系统内非均匀能流特性问题的思路:需要从"聚光"与"吸热"不匹配的矛盾入手,以"光热匹配"为原则对聚光集热系统进行优化,提高"聚光"过程与"吸热"过程的协同性.

关键词：聚光型太阳能热发电非均匀能流分布聚光集热光热匹配

Hypoxia-preconditioned bone marrow-derived mesenchymal stem cells protect neurons from cardiac arrest-induced pyroptosis

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Neural Regeneration Research 2025年第4期20卷 1103-1123页

作者： Xiahong Tang Nan zheng Qingming Lin Yan You zheng Gong Yangping Zhuang Jiali Wu yu Wang Hanlin Huang Jun Ke Feng Chen Shengli Clinical Medical College of Fujian Medical University Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Emergency Fujian Provincial HospitalFuzhouFujian ProvinceChina Fujian Provincial Key Laboratory of Emergency Medicine FuzhouFujian ProvinceChina The Second Department of Intensive Care Unit Fujian Provincial Hospital South BranchFuzhouFujian ProvinceChina

Cardiac arrest can lead to severe neurological impairment as a result of inflammation,mitochondrial dysfunction,and post-cardiopulmonary resuscitation neurological *** preconditioning has been shown to improve migration and survival of bone marrow–derived mesenchymal stem cells and reduce pyroptosis after cardiac arrest,but the specific mechanisms by which hypoxia-preconditioned bone marrow–derived mesenchymal stem cells protect against brain injury after cardiac arrest are *** this end,we established an in vitro co-culture model of bone marrow–derived mesenchymal stem cells and oxygen–glucose deprived primary neurons and found that hypoxic preconditioning enhanced the protective effect of bone marrow stromal stem cells against neuronal pyroptosis,possibly through inhibition of the MAPK and nuclear factor κB ***,we transplanted hypoxia-preconditioned bone marrow–derived mesenchymal stem cells into the lateral ventricle after the return of spontaneous circulation in an 8-minute cardiac arrest rat model induced by *** results showed that hypoxia-preconditioned bone marrow–derived mesenchymal stem cells significantly reduced cardiac arrest–induced neuronal pyroptosis,oxidative stress,and mitochondrial damage,whereas knockdown of the liver isoform of phosphofructokinase in bone marrow–derived mesenchymal stem cells inhibited these *** conclude,hypoxia-preconditioned bone marrow–derived mesenchymal stem cells offer a promising therapeutic approach for neuronal injury following cardiac arrest,and their beneficial effects are potentially associated with increased expression of the liver isoform of phosphofructokinase following hypoxic preconditioning.

关键词： bone marrow–derived mesenchymal stem cells cardiac arrest cardiac resuscitation hypoxic preconditioning liver isoform of phosphofructokinase mitochondria neuroinflammation oxidative stress pyroptosis reactive oxygen species

石学敏院士对《灵枢·经脉》“厥”内涵的研究

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中国针灸 2012年第1期32卷 43-46页

作者：杜宇征张春红天津中医药大学第一附属医院针灸科天津300193

石学敏院士经几十年来的古医籍考证,重审经络辨证,对六经之"厥"进行了深入分析,探究《灵枢.经脉》"是为……厥"的本意,通过"厥"之临床考证,总结其辨证施治的具体应用,并以此指导临床循经取穴,拟定补泻手法。证之临床,确有良效。

关键词：名医,石学敏学术思想针灸疗法