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Quasi-particle injection into YBa2Cu3O7-δ micro-bridge

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Science Bulletin 2003年第11期48卷 1161-1164页

作者： SUN Guozhu,WU Peiheng,CAI Weixing,JI Zhengming,XU weiwei,kang Lin,YANG Senzu Research Institute of Superconductor Electronics Department of Electronic Science and Engineering Nanjing University Research Institute of Superconductor Electronics Department of Electronic Science and Engineering Nanjing University Research Institute of Superconductor Electronics Department of Electronic Science and Engineering Nanjing University Research Institute of Superconductor Electronics Department of Electronic Science and Engineering Nanjing University Research Institute of Superconductor Electronics Department of Electronic Science and Engineering Nanjing University Research Institute of Superconductor Electronics Department of Electronic Science and Engineering Nanjing University Research Institute of Superconductor Electronics Department of Electronic Science and Engineering Nanjing University Nanjing 210093 China Nanjing 210093 China Nanjing 210093 China Nanjing 210093 China Nanjing 210093 China Nanjing 210093 China Nanjing 210093 China

Several types of quasi-particle injections into YBa2Cu3O7-d (YBCO) micro-bridge have been studied, re- vealing the quasi-particle non-equilibrium effect, the current superposition effect and the heating effect. The current gain抯 dependence on temperatures indicates that supercon- ductivity of YBCO is really suppressed by quasi-particle injection. We propose a new type of quasi-particle injection which turns out to be a promising candidate for interface between superconductor and semiconductor circuits.

关键词： quasi-particle injection high temperature superconductor.

Double-side fabrication process and millimeter waveresponse of intrinsic Josephson junctions

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Chinese Science Bulletin 2009年第5期54卷 873-876页

作者： WU JingBo YI DongChao GU ZhengHao kang Lin XU weiwei CHEN Jian WU PeiHeng Research Institute of Superconductor Electronics Nanjing University Nanjing 210093 China

We adopted double-side fabrication process to prepare intrinsic Josephson junctions (IJJs) based on Bi2Sr2CaCu2O8+x (BSCCO) single crystals. Using crystal cleavage and double-side argon ion milling, we have successfully fabricated very uniform IJJs with the thickness of single crystal slice less than 200 nm. Using quasi-optical system, the response of the IJJs to millimeter wave radiation was studied. With applied magnetic field perpendicular to a-b plane, we have observed Shapiro steps under millimeter wave radiation, and the Josephson oscillation of each junction was phase-locking.

关键词：电磁波传播本征Josephson结双倍边制作过程毫米波

Flexible coal-derived carbon fibers via electrospinning for self-standing lithium-ion battery anodes

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International Journal of Mining Science and Technology 2024年第12期34卷 1753-1763页

作者： Baolin Xing Weibo Meng Hao Liang weiwei kang Huihui Zeng Chuanxiang Zhang Ishioma Laurene Egun Peng Li Yijun Cao Zhengfei Chen Henan International Joint Laboratory of Coal Clean Utilization College of Chemistry and Chemical EngineeringHenan Polytechnic UniversityJiaozuo 454003China State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization Jiaozuo 454003China School of Biological and Chemical Engineering NingboTech UniversityNingbo 315100China Henan Province Industrial Technology Research Institute of Resources and Materials Zhengzhou UniversityZhengzhou 450001China

A series of flexible and self-standing coal-derived carbon fibers(CCFs)were fabricated through electro-spinning coupled with carbonization using bituminous coal and polyacrylonitrile(PAN)as the carbon *** CCFs were utilized as free-standing lithium-ion battery(LIB)*** car-bonization temperature reveals that the CCFs exhibit a one-dimensional solid linear structure with a uni-form distribution of graphite-like *** fibers possess a dense structure and smooth surface,with averaging diameter from approximately 125.0 to 210.0 nm at carbonization temperatures ranging from 600 to 900℃.During electrospinning and carbonization,the aromatic rings enriched in bituminous coal crosslink with PAN chains,forming a robust three-dimensional(3D)*** 3D microstructure significantly enhances the flexibility and tensile strength of CCFs,while increasing the graphite-like sp^(2)microcrystalline carbon content,thus improving electrical *** CCFs carbonized at 700℃demonstrate an optimal balance of sp^(3)amorphous and sp^(2)graphite-like *** average diameter of CCFs-700 is 177 nm and the specific surface area(SSA)is 7.2 m^(2)g^(-1).Additionally,the fibers contain oxygen-containing functional groups,as well as nitrogen-containing func-tional groups,including pyridinic nitrogen and pyrrolic *** to its characteristics,the CCFs-700 showcases remarkable electrochemical performance,delivering a high reversible capacity of 631.4 mAh g^(-1).CCFs-700 also exhibit outstanding cycle stability,which retains approximately all of their first capacity(400.1 mAh g^(-1))after 120 *** research offers an economical yet scalable approach for producing flexible and self-supporting anodes for LIBs that do not require current collectors,binders and conductive additives,thereby simplifying the electrode fabrication process.

关键词： Lithium-ion batteries Coal-derived carbon fibers Electrospinning Flexible anode Electrochemical performance

Terahertz detectors based on superconducting hot electron bolometers

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Science China(Information Sciences) 2012年第1期55卷 64-71页

作者： JIANG Yi,JIN BiaoBing,XU weiwei,kang Lin,CHEN Jian&WU PeiHeng Research Institute of Superconductor Electronics,Nanjing University,Nanjing 210093,China Research Institute of Superconductor Electronics Nanjing University Nanjing China

Low noise terahertz(THz)heterodyne detectors based on superconducting niobium nitride(NbN) hot electron bolometers(HEBs)have been *** HEB consists of a planar antenna and an NbN bridge connecting across the antenna’s inner terminals on a high-resistivity Si *** double sideband noise temperatures at 4.2 K without corrections have been characterized from 0.65 to 3.1 *** excess quantum noise factor β of about 4 has been obtained,which agrees well with the calculated *** variance of the HEB has been measured,and Allan time up to 20 s is obtained using a microwave feedback ***,the intermediate frequency gain bandwidth(GBW)was measured using two dierent methods,resulting in same GBW value of about 3.5 GHz.

关键词： terahertz heterodyne detector hot electron bolometer noise temperature stability intermediate frequency gain bandwidth

Enhancing weather predictions:Initial condition sensitivity and error dynamics in data assimilation

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Science China Earth Sciences 2025年

作者： weiwei FU Department of Atmospheric and Oceanic Sciences Fudan University Key Laboratory of Polar Atmosphere-ocean-ice System for Weather and Climate Ministry of Education Fudan University IRDR International Center of Excellence on Risk Interconnectivity and Governance on Weather Fudan University

Data Assimilation (DA) plays a crucial role in modern numerical forecasting (Kalnay, 2002). It has been demonstrated that incorporating real-time observational data into forecast models significantly enhances the accuracy of both shortterm weather forecasts (Bauer et al., 2015; Bannister, 2017)and long-term climate predictions (Karspeck et al., 2013;Mochizuki et al., 2016).

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Impacts of Nutlin-3a and exercise on murine double minute 2-enriched glioma treatment

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Neural Regeneration Research 2025年第4期20卷 1135-1152页

作者： Yisheng Chen Zhongcheng Fan Zhiwen Luo Xueran kang Renwen Wan Fangqi Li weiwei Lin Zhihua Han Beijie Qi Jinrong Lin Yaying Sun Jiebin Huang Yuzhen Xu Shiyi Chen Department of Sport Medicine Huashan HospitalFudan UniversityShanghaiChina Department of Orthopedic Surgery Hainan Province Clinical Medical CenterHaikou Affiliated Hospital of Central South University Xiangya School of MedicineHaikouHainan ProvinceChina Department of Basic Medicine Shanghai Jiao Tong University School of MedicineShanghai Jiao Tong UniversityShanghaiChina Department of Neurosurgery Second Affiliated Hospital of Zhejiang University School of MedicineZhejiang UniversityHangzhouZhejiang ProvinceChina Department of Orthopedics Shanghai General HospitalSchool of Medicine Shanghai Jiao Tong UniversityShanghaiChina Department of Infectious Diseases Children’s Hospital of Fudan UniversityNational Children’s Medical CenterShanghaiChina Department of Rehabilitation The Second Affiliated Hospital of Shandong First Medical UniversityTaianShandong ProvinceChina

Recent research has demonstrated the impact of physical activity on the prognosis of glioma patients,with evidence suggesting exercise may reduce mortality risks and aid neural *** role of the small ubiquitin-like modifier(SUMO)protein,especially post-exercise,in cancer progression,is gaining attention,as are the potential anti-cancer effects of *** used machine learning to create the exercise and SUMO-related gene signature(ESLRS).This signature shows how physical activity might help improve the outlook for low-grade glioma and other *** demonstrated the prognostic and immunotherapeutic significance of ESLRS markers,specifically highlighting how murine double minute 2(MDM2),a component of the ESLRS,can be targeted by *** underscores the intricate relationship between natural compounds such as nutlin-3 and immune *** comprehensive CRISPR screening,we validated the effects of specific ESLRS genes on low-grade glioma *** also revealed insights into the effectiveness of Nutlin-3a as a potent MDM2 inhibitor through molecular docking and dynamic ***-3a inhibited glioma cell proliferation and activated the p53 *** efficacy decreased with MDM2 overexpression,and this was reversed by Nutlin-3a or *** using a low-grade glioma mouse model highlighted the effect of physical activity on oxidative stress and molecular pathway ***,both physical exercise and Nutlin-3a administration improved physical function in mice bearing tumors derived from MDM2-overexpressing *** results suggest the potential for Nutlin-3a,an MDM2 inhibitor,with physical exercise as a therapeutic approach for glioma *** research also supports the use of natural products for therapy and sheds light on the interaction of exercise,natural products,and immune regulation in cancer treatment.

关键词： exercise and SUMO-related gene signatures(ESLRS) glioblastoma management low-grade glioma natural bioactives neural regeneration physical exercise

Preparation and applications of calcium ferrite as a functional material:A review

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 292-310页

作者： Xiuli Han Bowen Duan Lei Liu Shilong Fang weiwei Wang College of Mining Engineering North China University of Science and TechnologyTangshan 063210China Collaborative Innovation Center of Green Development and Ecological Restoration of Mineral Resources of Hebei Province Tangshan 063210China Key Laboratory of Mining Development and Security Technology of Hebei Province Tangshan 063210China

Calcium ferrite(CF)is recognized as a potential green and efficient functional material because of its advantages of magnetism,electrochemistry,catalysis,and biocompatibility in the fields of materials chemistry,environmental engineering,and ***-fore,the obtained research results need to be systematically summarized,and new perspectives on CF and its composite materials need to be *** on the presented studies of CF and its composite materials,the types and structures of the crystal are *** addition,the current application technologies and theoretical mechanisms with various properties in different fields are ***,the various preparation methods of CF and its composite materials are elaborated in *** importantly,the advantages and disadvantages of the synthesis methods of CF and its composite materials are discussed,and the existing problems and emerging challenges in practical production are ***,the key future research directions of CF and its composite materials have been prospected from the potential application technologies to provide references for its synthesis and efficient utilization.

关键词： calcium ferrite mineral functional materials preparation application perspectives

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国外经验加快河北现代服务业发展

北华航天工业学院学报 2017年第2期27卷 29-31页

作者：康巍巍北华航天工业学院外语系河北廊坊065000

本文以京津冀协同发展为研究背景,以社会学,经济学,管理学及其他相关学科理论为指导,借鉴国外现代服务业发展典范,就河北省现代服务业发展中面临的突出问题进行剖析,论证了现代服务业发展在河北省经济发展中的重要性和必要性。规划设计... 详细信息

本文以京津冀协同发展为研究背景,以社会学,经济学,管理学及其他相关学科理论为指导,借鉴国外现代服务业发展典范,就河北省现代服务业发展中面临的突出问题进行剖析,论证了现代服务业发展在河北省经济发展中的重要性和必要性。规划设计出融社会环境保障、政府职能转变、人才智力支持、产业调整结合为一体的现代服务业发展模式。旨在为加快河北省经济发展,助推河北省更快融入京津冀协同发展战略中提供可借鉴的经验。

关键词：现代服务业国外经验经济发展

中华优秀传统文化资源融入英语专业人才培养机制研究

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北华航天工业学院学报 2021年第5期31卷 36-38页

作者：康巍巍北华航天工业学院外国语学院河北廊坊065000

本文通过问卷调查和个别访谈等方式,从文化符号,文化身份和文化价值三个层面了解当前英语专业学生对中国传统文化的认同现状,并基于调查结果分析造成这种现状的原因,进一步揭示中国传统文化对于英语专业建设的重要性。同时,结合校本特色... 详细信息

本文通过问卷调查和个别访谈等方式,从文化符号,文化身份和文化价值三个层面了解当前英语专业学生对中国传统文化的认同现状,并基于调查结果分析造成这种现状的原因,进一步揭示中国传统文化对于英语专业建设的重要性。同时,结合校本特色,以“立德树人”为己任,从人才培养理念,专业理论及实践课程设置和师资队伍建设三方面入手,将中华优秀传统文化融入英语专业人才培养机制,旨在培养以社会主义核心价值观为价值取向,具有坚定的政治信仰和社会责任感,兼具中国情怀和国际视野的应用型人才。

关键词：传统文化英语专业人才培养