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Electronic structure and ultraviolet spectra of p-C_(6)H_(4)-C_(20)

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原子与分子物理学报 2025年第3期42卷 21-28页

作者： CHEN xin School of Materials and Chemical Engineering West Anhui UniversityLu’an 237012China

Geometry optimization of p-C_(6)H_(4)-connected cyclo[20]carbon(p-C_(6)H_(4)-C_(20))was carried out at M062X/6-311G(d,p)level,three kinds of bond orders(Mayer,Laplacian,and Wiberg),electron-hole distributions,localized orbital locators(LOL),and infrared(IR)spectrum were also performed at the same *** on TD-DFT M062X/6-311G(d,p)method,the first 20 excited states and ultraviolet(UV)spectra of p-C_(6)H_(4)-C_(20) were *** results of π-electron delocalization analyses prove thatπ-electron delocalization of p-C_(6)H_(4)-C_(20) is more likely to occur on shorter C-C bonds rather than longer C-C bonds,and inside/outside of the ring plane rather than above/below the ring *** absorption peaks of p-C_(6)H_(4)-C_(20) locate at about 319 nm and 236 nm,respectively.

关键词： p-C_(6)H_(4)-C_(20) Bone orders UV spectrum Electron-hole analyses π-electron delocalization analyses

Defect Engineering:Can it Mitigate Strong Coulomb Effect of Mg^(2+)in Cathode Materials for Rechargeable Magnesium Batteries?

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Nano-Micro Letters 2025年第1期17卷 135-159页

作者： Zhengqing Fan Ruimin Li xin Zhang Wanyu Zhao Zhenghui Pan xiaowei Yang School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China School of Chemistry and Chemical Engineering Taiyuan University of TechnologyTaiyuan 030024People’s Republic of China School of Materials Science and Engineering Tongji UniversityShanghai 201804People’s Republic of China

Rechargeable magnesium batteries(RMBs)have been considered a promising“post lithium-ion battery”system to meet the rapidly increasing demand of the emerging electric vehicle and grid energy storage ***,the sluggish diffusion kinetics of bivalent Mg^(2+)in the host material,related to the strong Coulomb effect between Mg^(2+)and host anion lattices,hinders their further development toward practical *** engineering,regarded as an effective strategy to break through the slow migration puzzle,has been validated in various cathode materials for *** this review,we first thoroughly understand the intrinsic mechanism of Mg^(2+)diffusion in cathode materials,from which the key factors affecting ion diffusion are further ***,the positive effects of purposely introduced defects,including vacancy and doping,and the corresponding strategies for introducing various defects are *** applications of defect engineering in cathode materials for RMBs with advanced electrochemical properties are also ***,the existing challenges and future perspectives of defect engineering in cathode materials for the overall high-performance RMBs are described.

关键词： Rechargeable magnesium battery Sluggish diffusion kinetic Defect engineering Cathode materials Ion migration

Decoupling Scheme for Virtual Synchronous Generator Controlled Wind Farms Participating in Inertial Response

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Journal of Modern Power Systems and Clean Energy 2021年第2期9卷 347-355页

作者： Jiangbei xi Hua Geng xin Zou the Department of Automation Tsinghua UniversityBeijingChina the State Grid Economic and Technological Research Institute Co.Ltd. BeijingChina

In this paper,the dynamic coupling between the wind turbine rotor speed recovery(WTRSR)and inertial response of the conventional virtual synchronous generator(VSG)controlled wind farms(WFs)is *** distinguishing features are ***,the inertial response characteristics of VSG controlled WFs(VSG-WFs)are impaired by the dynamic ***,when the influence of WTRSR is dominant,the inertial response characteristics of VSG-WFs are even worse than the condition under which WFs do not participate in the response of grid ***,this phenomenon cannot be eliminated by only enlarging the inertia parameter of VSG-WFs,because the influence of WTRSR would also increase with the enhancement of inertial response.A decoupling scheme to eliminate the negative influence is then proposed in this *** starting the WTRSR process after inertial response period,the dynamic coupling is eliminated and the inertial response characteristics of WFs are ***,the effectiveness of the analysis and the proposed scheme are verified by simulation results.

关键词： Wind turbine rotor speed recovery(WTRSR) inertial response virtual synchronous generator(VSG) decoupling scheme

Microstructure and magnetostrictive properties of Tb doped Fe–Ga bulk alloys prepared by melt quenching

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Rare Metals 2014年第3期33卷 309-312页

作者： Shu-xin Zhang Wei Wu xiao-xi Zhu Jing-Hua Liu cheng-Bao Jiang School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics

The microstructure and magnetostrictive properties were investigated in the Tb doped Fe83Ga17-xTbx（x = 0.05, 0.10, 0.20, 0.30, 0.40, 0.50） bulk rods prepared by melt rapidly quenching. The partial solid solubility of Tb in the Fe-Ga matrix was preliminary detected by the lattice parameters and SEM observation. The matrix keeps A2 structure and the second phase appears surround the grain boundary as x C 0.1. h100 i preferred orientation is also observed for x = 0.1 sample along the axis of the quenched rod. The saturation magnetostriction first increases and maximum value reaches at x = 0.1, and then decreases with Tb addition increasing. The initial increase of the magnetostriction should be associated with the partial solution of Tb in the matrix, the maximum value at x = 0.1 should be attributed to the h100 i preferred orientation, and the decrease of the magnetostriction is correlated with the appearance of the second phase along the grain boundary.

关键词： Fe-Ga alloys Magnetostriction Microstructure Melt quenching

Thickness simulation of landfast ice along Mawson Coast,East Antarctica based on a snow/ice high-resolution thermodynamic model

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Advances in Climate Change Research 2022年第3期13卷 375-384页

作者： xin-Qing LI Feng-Ming HUI Jie-Chen ZHAO Meng-xi ZHAI xiao cheng School of Geospatial Engineering and Science Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Harbin Engineering University Qingdao Graduate School Qingdao Innovation and Development Base(Center)of Harin Engineering UniversityQingdao266000China MNR Key Laboratory for Polar Science Polar Research Institute of ChinaShanghai 200136China

Landfast ice plays an important role in atmosphere‒ocean interactions and ecosystems in the near coast area of *** the characteristics and variations of landfast ice is crucial to the study of climates and field activities in *** this study,a high-resolution thermodynamic snow-ice(HIGHTSI)model was applied to simulate the seasonal changes of landfast ice along the Mawson Coast,East Antarctica,through ERA-Interim reanalysis *** ocean heat-flux(Fw)values(10,15,20 and 25 W m−2)were used in sensitivity *** results showed that it is reasonable to simulate landfast ice using the HIGHTSI model,and the simulation of landfast ice thickness matched best well with field measurements when Fw was 20 W m^(−2).Then,2-D distributions of landfast ice from 2006 to 2018 were modeled by HIGHTSI with 2-D ERA-Interim reanalysis data in a 0.125°×0.125°cell grid as external *** results showed that fast ice was thicker along the coast and thinner near open water,and usually reaches its maximal thickness in October,varying from 1.2 to 2.0 m through the study *** was no statistical trend for the thickness during the study period.

关键词： Landfast ice Modeling HIGHTSI Antarctica

Visible-light-responsive homologous heterostructure of oxynitrides constructed to boost charge separation and water splitting

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Science China Chemistry 2025年第01期 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 Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences School of Chemistry and Chemical Engineering Liaoning Normal University College of Chemistry Jilin University

Constructing type II heterostructures 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 YTaO4-xNyand YTa *** 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(YTaO4-xNyand YTaON2).Meanwhile,detailed structural characterizations and spectroscopy analysis have been made to confirm the formation of heterostructure and promotion of spatial charge separation.

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Wafer-Scale Vertical 1D GaN Nanorods/2D MoS₂/PEDOT:PSS for Piezophototronic Effect-Enhanced Self-Powered Flexible Photodetectors

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NANO-MICRO LETTERS 2025年第1期17卷 1-15页

作者： Tang, xin Jiang, Hongsheng Lin, Zhengliang Wang, Xuan Wang, Wenliang Li, Guoqiang South China Univ Technol State Key Lab Luminescent Mat & Devices Guangzhou 510640 Peoples R China South China Univ Technol Sch Mat Sci & Engn Dept Elect Mat Guangzhou 510640 Peoples R China

Vertical 1D GaN nanorod arrays/2D MoS2/PEDOT:PSS heterostructures in wafer scale have been fabricated for flexible photodetection ***-powered flexible photodetector at compressive strain reveals a significantly enhanced photoresponse with a responsivity of 2.47 A W-1 and response times of 40/45 mu s, which are superior to the state-of-the-art flexible *** work not only provides a valuable strategy for the design and construction of tunable van der Waals heterostructures, but also opens a new opportunity for flexible sensors. van der Waals (vdW) heterostructures constructed by low-dimensional (0D, 1D, and 2D) materials are emerging as one of the most appealing systems in next-generation flexible photodetection. Currently, hand-stacked vdW-type photodetectors are not compatible with large-area-array fabrication and show unimpressive performance in self-powered mode. Herein, vertical 1D GaN nanorods arrays (NRAs)/2D MoS2/PEDOT:PSS in wafer scale have been proposed for self-powered flexible photodetectors arrays firstly. The as-integrated device without external bias under weak UV illumination exhibits a competitive responsivity of 1.47 A W-1 and a high detectivity of 1.2 x 1011 Jones, as well as a fast response speed of 54/71 mu s, thanks to the strong light absorption of GaN NRAs and the efficient photogenerated carrier separation in type-II heterojunction. Notably, the strain-tunable photodetection performances of device have been demonstrated. Impressively, the device at - 0.78% strain and zero bias reveals a significantly enhanced photoresponse with a responsivity of 2.47 A W-1, a detectivity of 2.6 x 1011 Jones, and response times of 40/45 mu s, which are superior to the state-of-the-art self-powered flexible photodetectors. This work presents a valuable avenue to prepare tunable vdWs heterostructures for self-powered flexible photodetection, which performs well in flexible sensors.

关键词： Vertical nanorod arrays van der Waals heterostructure Piezophototronic effect Self-powered photodetection Flexible sensors

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喉癌手术切缘的临床判别

山东大学基础医学院学报 2004年第5期18卷 301-305页

作者：宋西成潘新良栾信庸张庆泉许风雷雷大鹏张立强刘大昱山东大学齐鲁医院耳鼻咽喉科山东济南250012 烟台毓璜顶医院

目的 :探讨喉癌临床手术的安全切缘。方法 :分析 1996年 6月至 2 0 0 1年 6月山东大学齐鲁医院及烟台毓璜顶医院耳鼻咽喉科手术治疗 16 7例喉癌患者的临床资料 ,术前全面评估肿瘤 ,依据肿瘤特点分别采用甲状软骨中份旁侧入路 ,环甲膜入... 详细信息

目的 :探讨喉癌临床手术的安全切缘。方法 :分析 1996年 6月至 2 0 0 1年 6月山东大学齐鲁医院及烟台毓璜顶医院耳鼻咽喉科手术治疗 16 7例喉癌患者的临床资料 ,术前全面评估肿瘤 ,依据肿瘤特点分别采用甲状软骨中份旁侧入路 ,环甲膜入路 ,气管入路 ,咽侧入路 ,会厌谷入路 ,会厌根入路 ,根据肿瘤的原发部位、分期与特点切除范围相应不同 ;记录肿瘤扩展范围、复发、喉外侵犯、淋巴结转移的分布 ,统计复发率及生存率。结果 :3、5年失访分别为 3例和 4例 ,按复发和死亡计。 3、5年复发率为 15 12 2 (12 .3% )、2 3 94(2 4 .5 % ) ,生存率为 110 12 2 (90 .2 % )、73 94 (77.7% ) ;19例复发中单纯局部复发 11例 ,单纯颈部复发 5例 ,颈部和局部复发 3例 ,颈部复发 8例中 ,Ⅱ、Ⅲ、Ⅳ区、气管旁、锁骨上分别为 3、2、1、1、1例。淋巴结转移为2 31 1332 ,声门区 13 198,声门上区 110 5 5 4、跨声门型 10 3 5 32 ,声门下区 5 4 8;其中Ⅱ、Ⅲ、Ⅳ、V区分别为 12 1、78、13、9枚 ,喉前淋巴结 6枚 ,气管旁淋巴结 4枚。喉外侵犯甲状软骨板 19例 ,甲状腺 11例 ,气管 6例 ,接力肌 4例 ,胸骨舌骨肌 2例 ,舌根 9例。前连合、浸润性生长的深面切缘、会厌前间隙和舌根、披裂周围、软骨切缘以及Ⅱ区、喉前、气管旁淋巴?

关键词：喉肿瘤喉切除术手术切缘

Physical Layer Security Scheme With AoI-Awareness for Industrial IoT Based on Covert Communications

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 276-278页

作者： Yaping Li Zhi-xin Liu Jia-Wei Su Ya-Zhou Yuan the Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan University

Dear Editor,Industrial Internet of things(IIoT) is a typical application of cyberphysical system(CPS). In the IIoT, wireless communication is an inevitable trend to replace the deployment-limited wired transmission for cases with large-scale and mobile devices. However, wireless communication gives rise to critical issues related to physical security, such as malicious detections and attacks [1].

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