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Defence Technology(防务技术) 2025年第1期43卷 80-93页

作者： Kangning Yin Xinhui Ji Yan wang Zhiguo wang School of Information and Software Engineering University of Electronic Science and Technology of ChinaChengdu611731China Institute of Public Security Kash Institute of Electronics and Information IndustryKashi844000China

Federated learning(FL)is a distributed machine learning paradigm for edge cloud *** can facilitate data-driven decision-making in tactical scenarios,effectively addressing both data volume and infrastructure challenges in edge ***,the diversity of clients in edge cloud computing presents significant challenges for *** federated learning(pFL)received considerable attention in recent *** example of pFL involves exploiting the global and local information in the local *** pFL algorithms experience limitations such as slow convergence speed,catastrophic forgetting,and poor performance in complex tasks,which still have significant shortcomings compared to the centralized *** achieve high pFL performance,we propose FedCLCC:Federated Contrastive Learning and Conditional *** core of FedCLCC is the use of contrastive learning and conditional *** learning determines the feature representation similarity to adjust the local *** computing separates the global and local information and feeds it to their corresponding heads for global and local *** comprehensive experiments demonstrate that FedCLCC outperforms other state-of-the-art FL algorithms.

关键词： Federated learning Statistical heterogeneity Personalized model Conditional computing Contrastive learning

High-entropy ferrite with tunable magnetic properties for excellent microwave absorption

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 668-677页

作者： Yuying Huo Zhengyan wang Yanlan Zhang Yongzhen wang College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Shanxi Joint Laboratory of Coal based Solid Waste Resource Utilization and Green Ecological Development Taiyuan 030024China

High-entropy design is attracting growing interest as it offers unique structures and unprecedented application potential for *** this article,a novel high-entropy ferrite(CoNi)_(x/2)(CuZnAl)_((1-x)/3)Fe_(2)O_(4)(x=0.25,0.34,0.40,0.50)with a single spinel phase of space group Fd3m was successfully developed by the solid-state reaction *** tuning the Co-Ni content,the magnetic properties of the material,especially the coercivity,changed regularly,and the microwave absorption properties were *** particular,the ef-fective absorption bandwidth of the material increased from 4.8 to 7.2 GHz,and the matched thickness decreased from 3.9 to 2.3 mm,while the minimum reflection loss remained below-20 *** study provides a practical method for modifying the properties of fer-rites used to absorb electromagnetic waves.

关键词： high-entropy oxide spinel ferrite oxygen vacancy radar cross section

Surface ligand-promoted heterogeneous CO_(2) catalysis

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Science China Chemistry 2025年第2期68卷 444-457页

作者： Zhe Lu Lu wang School of Science and Engineering The Chinese University of Hong KongShenzhenShenzhen 518172China

Heterogeneous CO_(2) catalysis towards the synthesis of high-value products provides a potent pathway for achieving carbon *** distinctive attributes of surface ligands allow for highly effective tuning of the kinetics and mechanisms to enhance CO_(2) conversion *** this review,the catalytic contributions of surface ligands from the view of structure modulation,mechanism modulation,mass transfer,and energy transfer were *** relationships between surface ligands and the performance of functionalized catalysts were further ***,the applications of hydrocarbon chain spacer,hydroxyl and amino as terminal,and SiOx ligand in thermal,photo,and photothermal CO_(2) conversion were *** examining the current limitations and advancements,we concluded with insights into potential future research directions that focus on the development of precisely tuned active sites for highly efficient CO_(2) conversion.

关键词： heterogeneous catalysis CO_(2) conversion surface ligands

Has global warming already increased precipitation variability and disaster risk in past century?

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Science China Earth Sciences 2025年第2期68卷 646-648页

作者： Huijun wang Nanjing University of Information Science and Technology Nanjing 210044China

The global water cycle intensifies under climate warming,with an increase in global mean precipitation as well as extreme precipitation over many regions(Trenberth,1999;Chen and Sun,2017;Douville et al.,2021;Yin et al.,2024).In addition,precipitation has become increasingly volatile in recent *** example,both California and the Horn of Africa were hit by floods in 2023 immediately following prolonged multi-year droughts.

关键词： warming disaster floods

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Achieving ultralow leakage current in Schottky-MIS cascode anode lateral field-effect diode based on AlGaN/GaN HEMT

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Science China(Information Sciences) 2025年第1期68卷 379-385页

作者： Fangzhou wang Changhong GAO Guojian DING Cheng YU Zhuocheng wang Xiaohui wang Qi FENG Ping YU Peng ZUO Wanjun CHEN Yang wang Haiqiang JIA Hong CHEN Bo ZHANG Zeheng wang Songshan Lake Materials Laboratory School of Microelectronics Southern University of Science and Technology State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Manufacturing Commonwealth Scientific and Industrial Research Organisation

In this paper,we design and fabricate a Schottky-metal-insulator-semiconductor（MIS） cascode anode GaN lateral field-effect diode（CA-LFED） to achieve ultralow reverse leakage current(ILEAK).The device based on AlGaN/GaN highelectron-mobility-transistor（HEMT） includes a normally-off MIS-controlled channel that is cascoded with a high barrier height Schottky *** reverse bias,the high electric-field is effectively prevented by the normally-off MIS-controlled channel *** with the high barrier height Schottky contact,this feature significantly suppresses the *** by the device fabrication,the CA-LFED with high breakdown voltage（BV）>600 V shows an ultralow ILEAKof 3.6×10-9A/mm as well as a low forward voltage drop（VF） of 2.2 *** performance suggests that the CA-LFED can be a promising candidate for ultralow ILEAKand better VF-ILEAKtrade-off GaN power diode applications.

关键词： Schottky-MIS cascode anode lateral field-effect diode (LFED) ultralow reverse leakage current ($I_{\rm{LEAK}}$) forward drop and reverse leakage trade-off AlGaN/GaN HEMTs

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Novel titanium vanadate with superior Naþtransport kinetics for rapid charging and low-temperature sodium ion batteries

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Green Energy & Environment 2025年第2期10卷 374-381页

作者： Dan Lv Liehao Wei Cheng wang Mingyue wang Zhongchao Bai Yameng Fan Dongdong wang Nana wang Jian Yang Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) School of Materials Science and EngineeringTianjin UniversityTianjin300072China Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinan250100China Tianjin Key Lab of Indoor Air Environmental Quality Control School of Environmental Science and TechnologyTianjin UniversityTianjin300072China Institute for Superconducting and Electronic Materials University of WollongongWollongongAustralia Institute of Energy Materials Science(IEMS) University of Shanghai for Science and Technology516 Jungong RoadShanghai200093China

Sodium-ion batteries(SIBs)hold great promise for large-scale energy storage in the post-lithium-ion battery era due to their high rate performance and long lifespan,although their sluggish Naþtransformation kinetics still require *** by the excellent electrochemical performance of titanium-based anode materials,here,we present a novel titanium vanadate@carbon(TVO@C)material as anode for *** TVO@C material is synthesized via a facile coprecipitation method,with the following annealing process in an acetylene *** opened ion channel and the oxygen vacancies within TVO@C facilitate the diffusion of Naþions,reducing their diffusion ***,an ultrahigh rate of 100 A g^(-1)and long life of 10,000 cycles have been ***,the TVO@C electrode exhibits stable performance,not only at room temperature,but also at temperatures as low as 20 *** TVO@CjjNa_(3)V_(2)(PO_(4))_(3)@C full cells have also achieved stable discharge/charge for 500 *** is believed that this strategy provides new insight into the development of advanced electrodes and provides a new opportunity for constructing novel high rate electrodes.

关键词： Anode High rate Titanium vanadate Sodium ion batteries

The Hilbert expansion of the Boltzmann equation in the incompressible Euler level in a channel

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Science China Mathematics 2025年第1期68卷 39-88页

作者： Feimin Huang Weiqiang wang Yong wang Feng Xiao Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Computing and Stochastic Mathematics(Ministry of Education) School of Mathematics and StatisticsHunan Normal UniversityChangsha 410081China

The study of the hydrodynamic limit of the Boltzmann equation with physical boundary is a challenging problem due to the appearance of the viscous and Knudsen boundary *** this paper,the hydrodynamic limit from the Boltzmann equation with the specular reflection boundary condition to the incompressible Euler equations in a channel is *** on the multi-scaled Hilbert expansion,the equations with boundary conditions and compatibility conditions for interior solutions,and viscous and Knudsen boundary layers are derived under different scaling,***,some uniform estimates for the interior solutions,and viscous and Knudsen boundary layers are *** the help of the L^(2)-L^(∞) framework and the uniform estimates obtained above,the solutions to the Boltzmann equation are constructed by the truncated Hilbert expansion with multiscales,and hence the hydrodynamic limit in the incompressible Euler level is justified.

关键词： Boltzmann equation incompressible Euler equations hydrodynamic limit Hilbert expansion specular reflection boundary condition viscous boundary layer Knudsen boundary layer

Civil aviation emissions in China in 2019:Characteristics and abatement potential

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Journal of Environmental Sciences 2025年第5期151卷 225-237页

作者： Haowen An Yu wang Yaxin wang Jun Liu Xiaolong Tang Honghong Yi Department of Environmental Engineering School of Energy and Environmental EngineeringUniversity of Science and Technology BeijingBeijing 100083China Key Laboratory of Beijing Municipal Industry Pollutant Resources Processing Beijing 100083China

Civil aviation is one of the industries facing the greatest challenge in reaching carbon neutrality by the middle of this century,and this sector also contributes to adverse impacts on the regional air quality and human *** exhibits the second highest air passenger turnover *** understanding of civil aviation emissionsmust be urgently enhanced,and themitigation potential should be *** this study,on the basis of real domestic flight information for 2019,we built a greenhouse gas and air pollution emission inventory for the civil aviation sector in China with the fuel flowmethod based on the cruise and other *** thoroughly analyzed emissions by region,aircraft and engine types,and aircraft age,based on which we designed four measures to evaluate the abatement *** found that the hydrocarbon(HC),CO,NO_(x),SO_(2),particulate matter(PM)and CO_(2)emissions in 2019 reached 79.9 kt(95%CI[51.6–114.5]),176.3 kt(95%CI[114.5–248.2]),304.2 kt(95%CI[203.4–420.7]),23.2 kt(95%CI[14.2–33.7]),1.0 kt(95%CI[0.61–1.44])and 87.0 Mt(95%CI[57.4–119.6]),*** cruise phase was the major emission phase,accounting for 67%-87%of the total pollutant *** four measures were jointly implemented,the HC,CO,NO_(x),SO_(2),PM and CO_(2)emissions could be reduced by 61%,54%,55%,45%,32%and 38%,*** lower-emission aircraft and switching travel modes could substantially reduce civil aviation emissions in China.

关键词： Emission inventory Fuel flow method Cruise emission Age structure Reduction measures

肝/脾CT值、受控衰减参数(CAP)和磁共振质子密度脂肪分数(MRI-PDFF)在慢性乙型肝炎脂肪变性患者中的应用价值

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临床肝胆病杂志 2024年第1期40卷 46-51页

作者：鲁景楠李岩松温雅王雄慧屈兆宇李建龙张炜延安大学附属医院影像科陕西延安716000 西安国际医学中心医院核医学科西安710100

目的探讨肝/脾CT值(CTL/S)、受控衰减参数(CAP)和磁共振质子密度脂肪分数(MRI-PDFF)在慢性乙型肝炎(CHB)肝脂肪变性患者中的应用价值。方法回顾性收集2018年10月—2022年12月在延安大学附属医院行肝脏CT、CAP和MRI-PDFF检查的213例CHB... 详细信息

目的探讨肝/脾CT值(CTL/S)、受控衰减参数(CAP)和磁共振质子密度脂肪分数(MRI-PDFF)在慢性乙型肝炎(CHB)肝脂肪变性患者中的应用价值。方法回顾性收集2018年10月—2022年12月在延安大学附属医院行肝脏CT、CAP和MRI-PDFF检查的213例CHB患者的临床资料。根据MRI-PDFF结果,将213例患者分为单纯CHB组(MRI-PDFF<5%,n=111)和CHB合并脂肪变性组(MRI-PDFF≥5%,n=102);其中轻度脂肪变性69例,中度至重度脂肪变性33例。符合正态分布的计量资料组间比较采用成组t检验;不符合正态分布的计量资料组间比较采用Mann-Whitney U检验。绘制Bland-Altman图,评价两位医师测量MRI-PDFF的一致性。采用Spearman相关系数分析CTL/S和MRI-PDFF、CAP和MRI-PDFF的相关性。通过分析受试者工作特征曲线(ROC曲线),计算曲线下面积(AUC),评估CTL/S和CAP对不同程度脂肪变性的诊断价值,并使用DeLong检验比较两种影像诊断方法的AUC。结果MRI-PDFF在CHB患者中具有较高的可重复性及稳定性,CTL/S和MRI-PDFF之间呈显著负相关(r=-0.800,P<0.001),CAP与MRI-PDFF之间呈显著正相关(r=0.692,P<0.001)。CTL/S和CAP诊断CHB肝脂肪变性均有较高的准确度(AUC分别为0.951、0.902),且CTL/S优于CAP(P<0.05)。在检测轻度和中重度脂肪变性时,CTL/S的AUC分别为0.921和0.895,CAP的AUC分别为0.859和0.825。结论MRI-PDFF技术在CHB患者中具有较高的可重复性及稳定性,CTL/S和CAP对不同程度的CHB肝脂肪变性均具有较高的诊断价值。

关键词：乙型肝炎慢性脂肪肝诊断

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Antithetical impacts of deleterious LRP1B mutations in non-squamous and squamous NSCLCs on predicting benefits from immune checkpoint inhibitor alone or with chemotherapy over chemotherapy alone: retrospective analyses of the POPLAR/ OAK and CHOICE-01 trials

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Science China(Life Sciences) 2025年第1期68卷 249-262页

作者： Jinliang wang Wenyong Zhou Yu Xu Jianchun Duan Qiaoxia Zhou Guoqiang wang Leo Li Chunwei Xu Wenxian wang Shangli Cai Zhijie wang Jie wang Department of Oncology The Fifth Medical Center of Chinese PLA General HospitalBeijing 100091China Department of Thoracic Surgery Shanghai Chest HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200025China Burning Rock Biotech Guangzhou 510300China CAMS Key Laboratoryof Translational Research on LungCancer State Key Laboratoryof Molecular OncologyDepartmentof Medical OncologyNational Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Institute of Basic Medicine and Cancer(IBMC) Chinese Academy of SciencesHangzhou 310000China Department of Clinical Trial The Cancer Hospital of the University of Chinese Academy of Sciences(Zhejiang Cancer Hospital)Hangzhou 310022China

In non-small cell lung cancers,the non-squamous and squamous subtypes(nsqNSCLC and sqNSCLC)exhibit disparities in pathophysiology,tumor immunology,and potential genomic correlates affecting responses to immune checkpoint inhibitor(ICI)-based *** our inhouse training cohort(n=85),the presence of the LRP1B deleterious mutation(LRP1B-del)was associated with longer and shorter progression-free survival(PFS)on ICIs alone in nsqNSCLCs and sqNSCLCs,respectively(Pinteraction=0.008).These results were validated using a larger public ICI cohort(n=208,Pinteraction<0.001).Multiplex immunofluorescence staining revealed an association between LRP1B-del and increased and decreased numbers of tumor-infiltrating CD8+T cells in nsqNSCLCs(P=0.040)and sqNSCLCs(P=0.014),*** the POPLAR/OAK cohort,nsqNSCLCs with LRP1B-del demonstrated improved PFS benefits from atezolizumab over docetaxel(hazard ratio(HR)=0.70,P=0.046),whereas this benefit was negligible in those without LRP1B-del(HR=1.05,P=0.64).Conversely,sqNSCLCs without LRP1Bdel benefited more from atezolizumab(HR=0.60,P=0.002)than those with LRP1B-del(HR=1.30,P=0.31).Consistent results were observed in the in-house CHOICE-01 cohort,in which nsqNSCLCs with LRP1B-del and sqNSCLCs without LRP1B-del benefited more from toripalimab plus chemotherapy than from chemotherapy alone(Pinteraction=0.008).This multi-cohort study delineates the antithetical impacts of LRP1Bdel in nsqNSCLCs and sqNSCLCs on predicting the benefits from ICI alone or with chemotherapy over chemotherapy *** findings highlight the distinct clinical utility of LRP1B-del in guiding treatment choices for nsqNSCLCs and sqNSCLCs,emphasizing the necessity for a detailed analysis based on pathological subtypes when investigating biomarkers for cancer therapeutics.

关键词： non-squamous NSCLC squamous NSCLC LRP1B deleterious mutations predictive biomarker immune checkpoint inhibitor