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Nano Research 2025年第1期18卷 208-216页

作者： Wenjie Wu Haoyang Zhou Ying Liu Yifei Pan Qingqing Chen yu zhang Junjie Mao Wenjie Ma Ping yu Beijing National Laboratory for Molecular Sciences Key Laboratory of Analytical Chemistry for Living BiosystemsInstitute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China College of Chemistry and Materials Science Anhui Normal UniversityWuhu 241002China University of Chinese Academy of Sciences Beijing 100049China

The electrochemical conversion of carbon dioxide(CO_(2))into chemical fuels represents a promising approach for addressing global carbon balance ***,this process is hindered by the kinetic limitations of anodic reactions,usually the oxygen evolution reaction,resulting in less efficient production of high value-added ***,we report an integrated electrocatalytic system that couples CO_(2)reduction reaction(CO_(2)RR)with urea oxidation reaction(UOR)using a bifunctional electrocatalyst with atomically dispersed dual-metal CuNi sites anchored on bamboo-like nitrogen-doped carbon nanotubes(CuNi-CNT),which were synthesized through a one-step pyrolysis *** bifunctional CuNi-CNT catalyst exhibits a near 100%CO Faraday efficiency for CO_(2)RR over a wide potential range and outstanding UOR performance with a negatively shifted potential of 210 mV at 10 mA·cm^(-2).In addition,we assemble a two-electrode electrolyzer using bifunctional CuNi-CNT-modified carbon fiber paper electrodes as both cathode and anode,capable of operating at a remarkably low cell voltage of 1.81 V at 10 mA·cm-2,significantly lower than conventional *** study provides a novel avenue to achieving an efficient carbon cycle with reduced electric power consumption.

关键词： electrochemical conversion bimetallic site catalyst bifunctional electrocatalyst carbon dioxide reduction urea oxidation

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新型史密斯-帕塞尔自由电子激光实验

中国激光 2001年第10期28卷 893-895页

作者：陈嘉钰梁正张永川杨梓强电子科技大学高能电子学研究所成都610054

介绍一种新型的Smith PurcellFEL实验 ,实验中利用中等能量级的相对论电子束激励 ,由衍射光栅和三反射镜组成的新型准光学系统 ,可以产生可调短毫米波、远红外波段的辐射。主要实验参数为 :电子注能量为 40 0～ 5 0 0keV ,电压脉冲宽度 ... 详细信息

介绍一种新型的Smith PurcellFEL实验 ,实验中利用中等能量级的相对论电子束激励 ,由衍射光栅和三反射镜组成的新型准光学系统 ,可以产生可调短毫米波、远红外波段的辐射。主要实验参数为 :电子注能量为 40 0～ 5 0 0keV ,电压脉冲宽度 70ns ,同步脉冲磁场强度 1.2T ,成功地检测到 3mm波段的毫米波信号。

关键词：相对论电子束准光学谐振腔史密斯-帕塞尔效应自由电子激光

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黄芩苷治疗原发性肝癌的研究进展

世界华人消化杂志 2018年第6期26卷 378-383页

作者：向东杨金玉张程亮刘东华中科技大学同济医学院附属同济医院药学部湖北省武汉市430030

原发性肝癌(hepatocellular carcinoma,HCC)是常见恶性肿瘤之一,中医药在治疗HCC领域具有独特的疗效.中药黄芩具有解热保肝之功效,其主要有效活性成分黄芩苷治疗HCC的作用近年来被大量报道.其抑制HCC生长的机制涉及诱导癌细胞凋亡和分... 详细信息

原发性肝癌(hepatocellular carcinoma,HCC)是常见恶性肿瘤之一,中医药在治疗HCC领域具有独特的疗效.中药黄芩具有解热保肝之功效,其主要有效活性成分黄芩苷治疗HCC的作用近年来被大量报道.其抑制HCC生长的机制涉及诱导癌细胞凋亡和分化、抑制蛋白合成、抑制癌细胞迁徙、干扰细胞间通讯和逆转肿瘤耐药等.此外,黄芩苷与传统化疗药物或其他抗癌中药用于治疗HCC也有较好的协同作用.基于黄芩苷的体内吸收特征和分子结构,研究者亦开发出黄芩苷固体脂质纳米粒和黄芩苷金属离子复合物,为黄芩苷的靶向治疗和提高抗癌效果提供了新视角.本文综述了近年来黄芩苷治疗HCC的国内外文献报道,以期为临床和科研工作者提供有价值参考.

关键词：原发性肝癌黄芩苷凋亡

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多排螺旋CT冠状动脉成像研究进展

CT理论与应用研究（中英文） 2016年第6期25卷 725-735页

作者：梁昱张晓琴内蒙古自治区人民医院影像医学科呼和浩特010017

随着多排螺旋CT设备的不断进步,使用多排螺旋CT行冠状动脉CT血管造影(CCTA)诊断冠状动脉粥样硬化性心脏病(CAD)已广泛应用于临床实践工作中。由于影像技术的进步使CCTA检查的准确度大大提高,这项检查已经成为一种筛查诊断CAD的可靠的无... 详细信息

随着多排螺旋CT设备的不断进步,使用多排螺旋CT行冠状动脉CT血管造影(CCTA)诊断冠状动脉粥样硬化性心脏病(CAD)已广泛应用于临床实践工作中。由于影像技术的进步使CCTA检查的准确度大大提高,这项检查已经成为一种筛查诊断CAD的可靠的无创的检查方法。同时CCTA检查在预测CAD的疾病进程和心血管事件方面具有重要作用。尽管CCTA检查的作用已被学术界广泛肯定,但它有一个重要的缺陷就是检查的有效辐射剂量较大,这将增大辐射诱导性恶性肿瘤的发病风险。为了最大限度地降低CCTA检查的辐射风险,多种在满足影像诊断的前提下降低CCTA检查有效辐射剂量的方法已经出现。本文将回顾多排螺旋CT的技术进展和目前减少CCTA检查辐射剂量的主要方法,对CCTA检查在CAD中的诊断、预后价值评估和CCTA检查的未来发展方向等几个方面进行讨论。

关键词：冠状动脉CT血管造影(CCTA) 辐射剂量 X线计算机多排螺旋CT

Ultralight and superelastic MXene/reduced graphene oxide aerogels for electromagnetic interference shielding

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Nano Research 2025年第1期18卷 1-9页

作者： Xinfeng Zhou Yang Dai Guoyao yue Yiman zhang Lulu Li Zhong-Zhen yu Peng Min Hao-Bin zhang 21 State Key Laboratory of Organic-Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China Beijing Key Laboratory of Advanced Functional Polymer Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China Present address:BOE Technology Innovation Center BOE Technology Group Co.Ltd.Beijing 100176China Xi’an Modern Chemistry Research Institute Xi’an 710065China

Lightweight aerogels feature multifunctionality and a high porosity,yet accompanied with poor structure recovery under large strain *** this work,we develop an air bubble-ice crystal dual template and annealing strategy to integrate low density and high resilience for the conductive transition metal carbides/nitrides(MXene)composite *** air bubbles and ice crystals synergistically exclude the nanosheets to the gas-liquid interfaces,thereby constructing unique Y-shaped junctions and robust *** annealing process greatly enhances the interlayer *** external load,the Yshaped structures prevent the stress concentration at the junctions by transferring the forces to the skeleton for maintaining structural *** addition,the wrinkled and thick cell walls,together with the enhanced interlayer interactions,endow the aerogel with exceptional structural stability and *** a result,the MXene/reduced graphene oxide(RGO)composite aerogels exhibit superelasticity with reversible compressive strains of up to 95%.In addition,the electron bridging effect of the RGO sheets affords the aerogel to deliver excellent electromagnetic interference shielding performance,as high as 46.3 dB at 2.5 ***,the remarkable reshapeability of the aerogels allows for precise regulation of structure and performance(33.5-75.1 dB)by a simple wetting compression *** summary,this work offers helpful inspirations for developing lightweight and superelasticity aerogels for extensive applications.

关键词： lightweight superelasticity MXene aerogel electromagnetic interference shielding reshapeability

Early identification of stroke through deep learning with multi-modal human speech and movement data

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Neural Regeneration Research 2025年第1期20卷 234-241页

作者： Zijun Ou Haitao Wang Bin zhang Haobang liang Bei Hu Longlong Ren Yanjuan Liu yuhu zhang Chengbo Dai Hejun Wu Weifeng Li Xin Li School of Computer Science and Engineering Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Department of Neurology Guangdong Neuroscience InstituteGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdong ProvinceChina Department of Emergency Medicine Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdong ProvinceChina

Early identification and treatment of stroke can greatly improve patient outcomes and quality of *** clinical tests such as the Cincinnati Pre-hospital Stroke Scale(CPSS)and the Face Arm Speech Test(FAST)are commonly used for stroke screening,accurate administration is dependent on specialized *** this study,we proposed a novel multimodal deep learning approach,based on the FAST,for assessing suspected stroke patients exhibiting symptoms such as limb weakness,facial paresis,and speech disorders in acute *** collected a dataset comprising videos and audio recordings of emergency room patients performing designated limb movements,facial expressions,and speech tests based on the *** compared the constructed deep learning model,which was designed to process multi-modal datasets,with six prior models that achieved good action classification performance,including the I3D,SlowFast,X3D,TPN,TimeSformer,and *** found that the findings of our deep learning model had a higher clinical value compared with the other ***,the multi-modal model outperformed its single-module variants,highlighting the benefit of utilizing multiple types of patient data,such as action videos and speech *** results indicate that a multi-modal deep learning model combined with the FAST could greatly improve the accuracy and sensitivity of early stroke identification of stroke,thus providing a practical and powerful tool for assessing stroke patients in an emergency clinical setting.

关键词： artificial intelligence deep learning diagnosis early detection FAST screening stroke

A mechanical reinforced and antifreezing polyacrylate hydrogel electrolyte for high-performance zinc-ion batteries

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Nano Research 2025年第1期18卷 341-350页

作者： Zili zhang Ruolin Wang Hongfei Lu Di zhang yu Zhao Jing Xu Bin Sun Zhi-Min Dang Yang Jin School of Electrical and Information Engineering Zheng Zhou UniversityZhengzhou 450001China State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

The operation of aqueous zinc-ion batteries in flexible energy storage field is plagued by the uncontrollable growth of Zn-dendrite and inevitable freeze of water below 0 ℃.Therefore,it is necessary to design a hydrogel electrolyte with good mechanical property and freezing resistance to uniform the Zn-deposition and resist flexibility loss at low *** find that the mechanical property(strength and toughness)of hydrogel electrolyte has a significant impact on the suppression of dendrite growth and the uniform deposition of zinc ***,a polyacrylate hydrogel is prepared in one step by ultraviolet(UV)curing method with Zn(CF_(3)SO_(3))_(2)salt and polyvinyl alcohol(PVA)addition to increase the antifreezing ability and mechanical *** adsorption of water molecules by 2-hydroxyethyl acrylate(HEA)and PVA reduces the freezing point of the hydrogel,which is beneficial for enhancing the electrochemical stability at low *** this basis,the Zn-symmetrical battery with hydrogel electrolyte has a long lifespan of 4710 h at 0.5 mA·cm^(-2)and 0.5 mAh·cm^(-2)at room ***,the hydrogel electrolyte exhibits an outstanding stability at low temperature of^(-2)0 ℃,the lifespan of symmetrical battery reaches to 4000 h at 0.5 mA·cm^(-2)and 0.5 mAh·cm^(-2).The assembled full cell with NaV3O8·1.5H_(2)O(NVO)cathode and hydrogel electrolyte possesses a high capacity retention ratio of 77%after 10,000 cycles at^(-2)0 ℃.The flexible cell can power light-emitting diode(LED)lamp under bending,warping and cutting without liquid leakage and an electronic watch at the operating temperature of^(-2)0 ℃.

关键词： zinc ion battery hydrogel electrolyte mechanical enhancement freezing resistance

Integration of Electrical Properties and Polarization Loss Modulation on Atomic Fe–N‑RGO for Boosting Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 517-532页

作者： Kaili zhang yuefeng Yan Zhen Wang Guansheng Ma Dechang Jia Xiaoxiao Huang yu Zhou State Key Laboratory of Precision Welding&Joining of Materials and Structures Harbin Institute of TechnologyHarbin 150001People’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China MIIT Key Laboratory of Advanced Structural‑Functional Integration Materials&Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001People’s Republic of China

Developing effective strategies to regulate graphene’s conduction loss and polarization has become a key to expanding its application in the electromagnetic wave absorption(EMWA)*** on the unique energy band structure of graphene,regulating its bandgap and electrical properties by introducing heteroatoms is considered a feasible ***,metal-nitrogen doping reduced graphene oxide(M–N-RGO)was prepared by embedding a series of single metal atoms M–N_(4) sites(M=Mn,Fe,Co,Ni,Cu,Zn,Nb,Cd,and Sn)in RGO using an N-coordination atom-assisted *** composites had adjustable conductivity and polarization to optimize dielectric loss and impedance matching for efficient EMWA *** results showed that the minimum reflection loss(RL_(min))of Fe–N-RGO reaches−74.05 dB(2.0 mm)and the maximum effective absorption bandwidth(EAB_(max))is 7.05 GHz(1.89 mm)even with a low filler loading of only 1 wt%.Combined with X-ray absorption spectra(XAFS),atomic force microscopy,and density functional theory calculation analysis,the Fe–N_(4) can be used as the polarization center to increase dipole polarization,interface polarization and defect-induced polarization due to d-p orbital hybridization and structural ***,electron migration within the Fe further leads to conduction loss,thereby synergistically promoting energy *** study demonstrates the effectiveness of metal-nitrogen doping in regulating the graphene′s dielectric properties,which provides an important basis for further investigation of the loss mechanism.

关键词： Electromagnetic wave absorption Fe-N-RGO Dipole polarization Conduction loss Impedance matching

Lipase-catalysed resolution of N-substituted amino acid derivatives

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Lipase-catalysed resolution of N-substituted amino acid deri...

第七届全国酶学学术讨论会

作者： Zheng liang-yu, zhang Suo-qin, FengYan, Zhao Li-fang, Cao Shu-gui a Key laboratory of Molecular Enzymology and Engineering of Educational Ministry b College of Chemistry, Jilin University, ChangChun, 130023

Enantiopure N-substituted amino acid derivatives are important intermediates for thesynthesis of many pharmaceuticals,liquid crystal materials and *** most commonlyused methodology for the preparation of enantiopure N-substituted amino acid derivatives ischemical *** use of lipase as chiral catalysts to prepare enantiopure N-substituted

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医疗高需求患者卫生保健策略研究

中国卫生政策研究 2016年第12期9卷 34-38页

作者：苗豫东张亮朱靖钱东福张林胡丹南京医科大学医政学院江苏南京211166 华中科技大学同济医学院医药卫生管理学院湖北武汉430030 东南大学公共卫生学院江苏南京210009 盐城卫生职业技术学院基层卫生发展研究中心江苏盐城224005

在中国医改进程中,社会公众"看病贵"的呼声从未间断。但大数据分析表明:只占较少比例(5%)的医疗需求较高的患者,医疗费用占居民医疗总支出的较大比例(约50%)。"看病贵"问题显然并非普遍存在。本文在引入医疗高需求患者概念的基础上,归... 详细信息

在中国医改进程中,社会公众"看病贵"的呼声从未间断。但大数据分析表明:只占较少比例(5%)的医疗需求较高的患者,医疗费用占居民医疗总支出的较大比例(约50%)。"看病贵"问题显然并非普遍存在。本文在引入医疗高需求患者概念的基础上,归纳分析医疗高需求患者特征,借鉴国际上医疗高需求患者卫生保健组织及项目的做法经验,分析未来中国医疗高需求患者的保健策略,以期为医改和卫生政策制定提供指导。

关键词：医疗高需求患者卫生保健策略卫生改革