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Science China Chemistry 2025年第1期68卷 186-191页

作者： Hai Zou yunfeng Bao Xueshang xin yu Qi Tengfeng Xie Fuxiang Zhang State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China School of Chemistry and Chemical Engineering Liaoning Normal UniversityDalian 116029China College of Chemistry Jilin UniversityChangchun 130012China

Constructing typeⅡheterostructures represents a widely recognized strategy for enhancing charge separation and photocatalytic efficiency,but it remains challenging to fabricate homologous heterostructures based on visible-light-responsive semiconductors,especially for popularly investigated(oxy)nitrides with low thermal ***,we synthesized a homologous heterostructure(denoted as YTON_H)based on the oxynitrides of YTaO_(4-x)N_(y)and YTa ON_(2).This heterostructure exhibits type Ⅱ band structure alignment and intimate interface achieved through a magnesium(Mg)powder-assisted nitridation *** with widely reported heterologous heterostructures,the as-obtained YTON_H homologous heterostructure could similarly exhibit enhanced charge separation as well as photocatalytic water splitting performance with respect to its counterparts(YTaO_(4-x)N_(y)and YTaON_(2)).Meanwhile,detailed structural characterizations and spectroscopy analysis have been made to confirm the formation of heterostructure and promotion of spatial charge separation.

关键词： charge separation heterostructure oxynitride photocatalysis visible light

OLIGOPEPTIDES FROM THE ROOTS OF ASTER TATARICUS L. f.

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Chinese Chemical Letters 1993年第7期4卷 605-608页

作者： Dong Liang CHEN yu SHAO yu xin cui R. Hartman Institute of Organic Chemistry, Stae Key Laboratory of Applied Organic Chemistry, Lanzou University, Lanzou, 730000 Institute of Physiological Chemistry, Bonn University, Bonn, Germany

Two new oligopeptides, Asterin A and B, have been isolated from the roots of Aster tataricus L. f., and their structures were elucidated on the basis of spectroscop- ic, chemical and enzymatic methods.

关键词： ASTER OLIGOPEPTIDES FROM THE ROOTS OF ASTER TATARICUS L

Stretchable All-Small-Molecule Organic Solar Cells Enabled by Polymer Elastomer Confinement

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Chinese Journal of Polymer Science 2025年第2期43卷 271-277页

作者： Chen-Yi Zhang yu-Qiang Liu Hong-Xiang Li xin-yue cui Zheng-Dong Wei yue-Heng Liu Ming-Hua Li An-Dong Zhang Pei Cheng Zhi-Shan Bo College of Textiles&Clothing State Key Laboratory of Bio-fibers and Eco-textilesQingdao UniversityQingdao266071China State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan UniversityChengdu610065China College of Materials Science and Engineering Qingdao UniversityQingdao266071China Beijing Key Laboratory of Energy Conversion and Storage Materials College of ChemistryBeijing Normal UniversityBeijing100875China

Intrinsic stretchability is a promising attribute of polymer organic solar cells(OSCs).However,rigid molecular blocks typically exhibit poor tensile properties,rendering polymers vulnerable to mechanical *** this study,we introduce a different approach utilizing all-small-molecule donors and acceptors to fabricate stretchable *** elastomer,styrene-b-ethylene-butylene-styrene(SEBS),was embedded to modulate film crystallization and *** effectively confines the growth process of donors and acceptors,leading to enhancement of the crystallization quality,thus contributing to enhanced device ***,SEBS can absorb and release mechanical stress during stretching,thereby preventing mechanical degradation of donors and *** mechanical properties of the OSCs were significantly improved by the incorporation of ***,the crack-onset strain increased from 1.03% to 5.99% with SEBS *** findings present a straightforward strategy for achieving stretchable OSCs using all small molecules,offering a different perspective for realizing stretchable devices.

关键词： All-small-molecule Organic solar cells Elastomer Stretchability Flexibility

Chinese Medicine for Treatment of COVID-19:A Review of Potential Pharmacological Components and Mechanisms

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Chinese Journal of Integrative Medicine 2025年第1期31卷 83-95页

作者： XU Qian-qian yu Dong-dong FAN Xiao-dan cui He-rong DAI Qian-qian ZHONG Xiao-ying ZHANG xin-yi ZHAO Chen YOU Liang-zhen SHANG Hong-cai Key Laboratory of Chinese Internal Medicine of Ministry of Education Dongzhimen HospitalBeijing University of Chinese MedicineBeijing100700China The Geriatrics Center First Affiliated HospitalAnhui University of Chinese MedicineHefei230031China School of Medical Information Engineering Guangzhou University of Chinese MedicineGuangzhou51006China Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical SciencesBeijing100700China

Coronavirus disease 2019(COVID-19)is an acute infectious respiratory disease that has been prevalent since December *** medicine(CM)has demonstrated its unique advantages in the fight against COVID-19 in the areas of disease prevention,improvement of clinical symptoms,and control of disease *** review summarized the relevant material components of CM in the treatment of COVID-19 by searching the relevant literature and reports on CM in the treatment of COVID-19 and combining with the physiological and pathological characteristics of the novel *** the basis of sorting out experimental methods in vivo and in vitro,the mechanism of herb action was further clarified in terms of inhibiting virus invasion and replication and improving related *** aim of the article is to explore the strengths and characteristics of CM in the treatment of COVID-19,and to provide a basis for the research and scientific,standardized treatment of COVID-19 with CM.

关键词： Chinese medicine COVID-19 SARS-CoV-2 substance component mechanism experimental method

Development and application of an intelligent thermal state monitoring system for sintering machine tails based on CNN-LSTM hybrid neural networks

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Journal of Iron and Steel Research International 2025年第1期32卷 52-63页

作者： Da-lin Xiong xin-yu Zhang Zheng-wei yu Xue-feng Zhang Hong-ming Long Liang-jun Chen Anhui Province Key Laboratory of Metallurgical Engineering&Resources Recycling Anhui University of TechnologyMa’anshan243002AnhuiChina School of Metallurgical Engineering Anhui University of TechnologyMa’anshan243032AnhuiChina School of Computer Science Anhui University of TechnologyMa’anshan243032AnhuiChina

Real-time prediction and precise control of sinter quality are pivotal for energy saving,cost reduction,quality improvement and efficiency enhancement in the ironmaking *** advance,the accuracy and comprehensiveness of sinter quality prediction,an intelligent flare monitoring system for sintering machine tails that combines hybrid neural networks integrating convolutional neural network with long short-term memory(CNN-LSTM)networks was *** system utilized a high-temperature thermal imager for image acquisition at the sintering machine tail and employed a zone-triggered method to accurately capture dynamic feature images under challenging conditions of high-temperature,high dust,and *** feature images were then segmented through a triple-iteration multi-thresholding approach based on the maximum between-class variance method to minimize detail loss during the segmentation *** the advantages of CNN and LSTM networks in capturing temporal and spatial information,a comprehensive model for sinter quality prediction was constructed,with inputs including the proportion of combustion layer,porosity rate,temperature distribution,and image features obtained from the convolutional neural network,and outputs comprising quality indicators such as underburning index,uniformity index,and FeO content of the *** accuracy is notably increased,achieving a 95.8%hit rate within an error margin of±*** the system is applied,the average qualified rate of FeO content increases from 87.24%to 89.99%,representing an improvement of 2.75%.The average monthly solid fuel consumption is reduced from 49.75 to 46.44 kg/t,leading to a 6.65%reduction and underscoring significant energy saving and cost reduction effects.

关键词： Sinter quality Convolutional neural network Long short-term memory Image segmentation FeO prediction

DI-YOLOv5:An Improved Dual-Wavelet-Based YOLOv5 for Dense Small Object Detection

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IEEE/CAA Journal of Automatica Sinica 2025年第2期12卷 457-459页

作者： Zi-xin Li yu-Long Wang Fei Wang the Shanghai Key Laboratory of Power Station Automation Technology Shanghai University the School of Mechatronic Engineering and Automation Shanghai University IEEE the TAIHU Laboratory of Deepsea Technological Science China Ship Scientific Research Center

Dear Editor,This letter focuses on the fact that small objects with few pixels disappear in feature maps with large receptive fields, as the network deepens, in object detection tasks. Therefore, the detection of dens...

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Mapping the landscape of gastric cancer immunotherapy:Bibliometric insights into advances and hotspots

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World Journal of Gastrointestinal Oncology 2025年第3期17卷 349-370页

作者： Zhen yuan Jing-Hang Wang Hao cui Shu-yuan Wang Bo Wei Jian-xin cui School of Medicine Nankai UniversityTianjin 300071China Department of General Surgery The First Medical CenterChinese PLA General HospitalBeijing 100853China

BACKGROUND Immunotherapy has surfaced as a promising therapeutic modality for gastric cancer(GC).A comprehensive review of advancements,current status,and research trends in GC immunotherapy is essential to inform future investigative *** To delineate the trends,advancements,and focal points in immunotherapy for *** We performed a bibliometric analysis of 2906 articles in English concerning GC immunotherapy published from 2000 to December 20,2023,indexed in the Web of Science Core *** analysis and visualization were facilitated by CiteSpace(6.1.6R),VOSviewer v.1.6.17,and GraphPad Prism *** There has been an increase in the annual publication rate of GC immunotherapy *** leads in publication volume,while the United States demonstrates the highest citation *** University is notable for its citation frequency and publication ***-citation analysis and keyword frequency revealed and highlighted a focus on GC prognosis,the tumor microenvironment(TME),and integrative immunotherapy with targeted *** research areas include gastroesophageal junction cancer,adoptive immunotherapy,and the role of Treg cell in *** GC immunotherapy research is an expanding field attracting considerable scientific *** the clinical adoption of immunotherapy in GC,the primary goals are to enhance treatment efficacy and patient *** hematological malignancies,GC's solid TME presents distinct immunological challenges that may attenuate the cytotoxic effects of immune cells on cancer *** instance,although CAR-T therapy is effective in hematological malignancies,it has underperformed in GC *** research is centered on overcoming immunosuppression within the TME,with a focus on combinations of targeted therapy,adoptive immunotherapy,Treg cell dynamics,and precise prognosis prediction in ***,immunotherapy's role in treating gastroesophageal junctio

关键词： Bibliometrics Gastric cancer Immunotherapy Immune checkpoint inhibitor Tumor microenvironment

Polypropylene-based blend with enhanced breakdown strength under gamma-ray irradiation for cable insulation

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Nuclear Science and Techniques 2025年第1期36卷 35-48页

作者： Bai-xin Liu yu Gao Jing Li Chen-Yi Guo Bo-Sen Si Jun-Guo Gao yu Chen Bo-Xue Du School of Electrical and Information Engineering Tianjin UniversityTianjin 300072China Key Laboratory of Engineering Dielectrics and Its Application Ministry of EducationHarbin University of Science and TechnologyHarbin 150080China State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong UniversityXi’an 710049China

This study focuses on the electrical properties and microstructure of polypropylene(PP)-based blends used for cable insulation in nuclear power plants(NPPs).The PP-based blend,comprising isotactic PP and propylene-based elastomer(PBE)at concentrations ranging from 0 to 50 wt%,underwent a melt blending process and subsequent cobalt-60 gamma-ray irradiation with doses ranging from 0 to 250 *** conductivity,trap distribution,and alternating(AC)breakdown strength were chosen to assess the insulation *** results indicate that the addition of PBE significantly improves the electrical properties of PP under *** PP,the electrical conductivity increased with irradiation,whereas the trap depth and breakdown strength decreased ***,for the blend,these changes initially exhibit opposite *** the irradiation was increased to 250 kGy,the AC breakdown strength of the blend improved by more than 21%compared to that of *** physical and chemical structures of the samples were investigated to explore the improvement *** results offer insights into the design of new cable-insulation materials suitable for NPPs.

关键词： Nuclear power plant Cable insulation Polypropylene Electrical properties Gamma-ray irradiation

Four Triterpene Oligoglycosides from the seeds of Aesculus Chinensis

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Chinese Chemical Letters 1999年第4期10卷 291-294页

作者： Jing ZHAO Xiu Wei YANG yu xin cui Xue Hui LIU Shu Yan LIU Hong Ying ZHI Ji Yong CHEN Fa Bing ZHU yun Li XUE and Dian Bo LIU (National Laboratory of Natural and Biomimetic Drugs, Beijing Medical University ,Beijing 1 00083)(Yantai Luye Pharmaceutical Beijing Med Univ Natl Lab Nat & Biomimet Drugs Beijing 100083 Peoples R China Yantai Luye Pharmaceut Co Ltd Yantai 264001 Shandong Peoples R China

A pair of novel geometrically isomeric triterpenoid saponins named escins IVa and IVb, together with known escins Ia and Ib. were isolated from the seeds of Aesculus chinensis. Their structures were determined on the ... 详细信息

关键词： Aesculus chinensis hippocastanaceae escins Ia Ib IVa Ivb X-ray analysis

Vector meson’s spin alignments in high energy reactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期68卷 1-16页

作者： Jin-Hui Chen Zuo-Tang Liang yu-Gang Ma xin-Li Sheng Qun Wang Key Laboratory of Nuclear Physics and Ion-beam Application(MoE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Institute of Frontier and Interdisciplinary Science Key Laboratory of Particle Physics and Particle Irradiation(MOE)Shandong UniversityQingdao 266237China INFN-Firenze Sesto Fiorentino FI 50019Italy Department of Modern Physics University of Science and Technology of ChinaHefei 230026China School of Mechanics and Physics Anhui University of Science and TechnologyHuainan 232001China

The global spin alignment of vector mesons has been observed by the STAR collaboration at the Relativistic Heavy Ion Collider(RHIC)at Brookhaven National Laboratory(BNL).It provides a unique opportunity to probe the correlation between the po-larized quark and antiquark in the strongly coupled quark-gluon plasma(sQGP)produced in relativistic heavy ion collisions,opening a new window to explore the properties of *** addition,spin alignments of vector mesons have also been observed in other high-energy particle collisions such as e^(+)e^(−)annihilations at high energies where hadron production is dominated by quark fragmentation *** results obtained are quite different from those obtained in heavy ion collisions where quark coalescence/combination mechanism dominates suggesting strong dependence on hadronization *** comprehensive studies in different hadronization processes are *** this article,we present a brief review of theoretical and experimen-tal advances in the study of vector meson’s spin alignments in a variety of high-energy particle collisions,with emphasis on hadronization mechanisms.

关键词： vector meson spin alignment global polarization relativistic heavy ion collisions fragmentation