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Chinese Journal of Chemistry 2024年第6期42卷 592-598页

作者： Yin Zhang Wei-dong yu Fang-Qian Wang Xiangnan Wang Jiawan zhou Chao Liu {3. Yan junior Education Department Changsha Normal UniversityChangshaHunan410100 China School of science Hunan University of Technology and BusinessChangshaHunan410000 China college of Chemistry and Chemical Engineering Central South UniversityChangshaHunan410000 China

Polyoxometalates modified with complex cations have attracted increasing attention because of the fascinating properties and the controllable *** adjusting the synthesis conditions,four new terpyridine complexes based hybrid POMs,[(TPY-H)CuCl]_(4)[W_(10)O_(3.)]·2DMF·2H_(2)O(1),[(TPY-H)Cu(DMSO)(H_(2)O)]_(2)[W_(10)O_(3.)]·2H_(2)O(2),[(TPY-H)_(2)Cu]_(2)[W_(10)O_(3.)]·6DMSO·8H_(2)O(3. and[(TPY-Br)CuCl(DMSO)(H_(2)O)]_(2)[(TPY-Br)CuCl]_(2)[W_(10)O_(3.)]·2DMSO·4H_(2)O(4),were prepared by using‘one-pot’***-crystal X-ray diffraction analyses,infrared radiation,etc.,revealed the structural composition of compounds 1—4,which indicates that synthesis conditions have a directional regulatory effect on the compounds *** oxidation catalytic reactions show 1—4 have good catalytic activities,and powder X-ray diffraction and thermogravimetry analysis show 1—4 have superduper catalytic ***,4 has better catalytic activity because of the different structure of terpyridine ***,a possible mechanism of dual-site catalysis by both cations and anions is proposed.

关键词： Polyoxometalates Terpyridine complexes Thioether oxidation Dual-site catalysis Clusters

SmartEagleEye:A Cloud-Oriented Webshell Detection System Based on Dynamic Gray-Box and Deep Learning

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Tsinghua science and technology 2024年第3期29卷 766-783页

作者： Xin Liu Yingli Zhang qingchen yu Jiajun Min jun Shen rui zhou qingguo zhou School of Information science and Engineering Lanzhou UniversityLanzhou 730000China college of computer science and {3. Zhejiang UniversityHangzhou 310058China School of Computing and Information technology University of WollongongWollongong 2500Australia

Compared with traditional environments,the cloud environment exposes online services to additional vulnerabilities and threats of cyber attacks,and the cyber security of cloud platforms is becoming increasingly prominent.A piece of code,known as a Webshell,is usually uploaded to the target servers to achieve multiple *** Webshell attacks has become a hot spot in current ***,the traditional Webshell detectors are not built for the cloud,making it highly difficult to play a defensive role in the cloud ***,a Webshell detection system based on deep learning that is successfully applied in various scenarios,is proposed in this *** system contains two important components:gray-box and neural network *** gray-box analyzer defines a series of rules and algorithms for extracting static and dynamic behaviors from the code to make the decision *** neural network analyzer transforms suspicious code into Operation Code(OPCODE)sequences,turning the detection task into a classification *** experiment results show that SmartEagleEye achieves an encouraging high detection rate and an acceptable false-positive rate,which indicate its capability to provide good protection for the cloud environment.

关键词： Webshell detection cloud web security deep learning

Roadmap for rechargeable batteries:present and beyond

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science China Chemistry 2024年第1期67卷 13-42页

作者： Sen Xin xu Zhang Lin Wang Haijun yu Xin Chang yu-Ming Zhao qinghai Meng Pan xu Chen-Zi Zhao Jiahang Chen Huichao Lu Xirui Kong Jiulin Wang Kai Chen Gang Huang Xinbo Zhang yu Su Yao Xiao Shu-Lei Chou Shilin Zhang Zaiping Guo Aobing Du Guanglei Cui Gaojing Yang qing Zhao Liubing dong dong zhou Feiyu Kang Hu Hong Chunyi Zhi Zhizhang yuan Xianfeng Li Yifei Mo Yizhou Zhu dongfang yu Xincheng Lei Jianxiong Zhao Jiayi Wang dong Su yu-Guo Guo Qiang Zhang jun Chen Li-jun Wan CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China university of Chinese Academy of sciences.Beijing 100049 China Institute of Advanced Battery Materials and Devices Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of TechnologyBeijing 100124China Beijing Key Laboratory of Green Chemical Reaction Engineering and technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources College of ChemistryXinjiang UniversityUrumqi 830046China Department of Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChangchun 130022China Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaide 5000Australia qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China Frontiers science Center for New Organic Matter Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China college of Chemistry and Materials science Jinan UniversityGuangzhou 511443China Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China Department of Materials science and Engineering City University of Hong KongHong Kong 999077China Division of Energy Storage Dalian National Laboratory for Clean Energy(DNL)Dalian Institute of Chem

Rechargeable batteries currently hold the largest share of the electrochemical energy storage market,and they play a major role in the sustainable energy transition and industrial decarbonization to respond to global climate *** to the increased popularity of consumer electronics and electric vehicles,lithium-ion batteries have quickly become the most successful rechargeable batteries in the past three decades,yet growing demands in diversified application scenarios call for new types of rechargeable *** efforts are made to developing the next-generation post-Li-ion rechargeable batteries,which include,but are not limited to solid-state batteries,lithium–sulfur batteries,sodium-/potassium-ion batteries,organic batteries,magnesium-/zinc-ion batteries,aqueous batteries and flow *** the great achievements,challenges persist in precise understandings about the electrochemical reaction and charge transfer process,and optimal design of key materials and interfaces in a *** roadmap tends to provide an overview about the current research progress,key challenges and future prospects of various types of rechargeable *** computational methods for materials development,and characterization techniques will also be discussed as they play an important role in battery research.

关键词： energy storage rechargeable batteries battery materials electrochemistry

Modeling Digital Video Database System with UML

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wuhan university Journal of Natural sciences 2001年第Z1期6卷 234-238页

作者： yu jun qing, zhou dong ru, jin ye,{3., wuhan university, wuhan 43.072, China college of computer science and {3. Wuhan University Wuhan 430072 China

The main purpose of the model is to present how the Unified Modeling Language (UML) can be used for modeling digital video database system (VDBS). It demonstrates the modeling process that can be followed during the analysis phase of complex applications. In order to guarantee the continuity mapping of the models, the authors propose some suggestions to transform the use case diagrams into an object diagram, which is one of the main diagrams for the next development phases.

关键词： UML video database class object sequence

Content-Based Hierarchical Analysis of News Video Using Audio and Visual Information

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wuhan university Journal of Natural sciences 2001年第4期6卷 779-783页

作者： yu jun-qing {3. dong-ru jin ye Liu Hua-yong School of computer Wuhan University Wuhan 430072 China

A schema for content-based analysis of broadcast news video is presented. First, we separate commercials from news using audiovisual features. Then, we automatically organize news programs into a content hierarchy at various levels of abstraction via effective integration of video, audio, and text data available from the news programs. Based on these news video structure and content analysis technologies, a TV news video Library is generated, from which users can retrieve definite news story according to their demands.

关键词： content-based audio news video segmentation

Elevated levels of KLF12 impair trophoblast syncytialization via GCM1 downregulation

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Reproductive and Developmental Medicine 2024年第3期8卷 131-137页

作者： qing-qing Shi Xing Wu Nan-Nan Kang Ji-dong {3. Xin Zhen Ze-Wu Li Gui-jun Yan Hai-Xiang Sun jing-yu Liu Yang Liu Reproductive Medicine Center Nanjing Drum Tower Hospital Clinical College of Nanjing Medical UniversityNanjing 210000China Center for Reproductive Medicine and Obstetrics and Gynecology Nanjing Drum Tower HospitalNanjing University Medical SchoolNanjing 210000China Center for Molecular Reproductive Medicine Nanjing UniversityNanjing 210000China Department of Obstetrics and Gynecology Nanjing Drum Tower HospitalNanjing University Medical SchoolNanjing 210000China Center for Reproductive Medicine Affiliated Hospital of Jining Medical UniversityJining 272000China Reproductive Medicine Center Nanjing Drum Tower HospitalState Key Laboratory of Pharmaceutical BiotechnologyNanjing UniversityNanjing 210000China

Objective:Placental dysfunction is a major contributor to miscarriages in *** observed elevated expression of Kruppel-like factor 12(KLF12)in placental villi of women who experienced miscarriage compared to that in women with healthy *** study aimed to elucidate the role of KLF12 in maintaining a successful ***:To investigate the role of KLF12 in placentation,we employed a model of forskolin-induced syncytialization in BeWo ***:Our findings revealed that KLF12 expression is downregulated during normal ***,we observed that abnormally high KLF12 levels directly suppressed glial cells missing-1(GCM1)*** suppression of GCM1 expression subsequently impaired BeWo cell ***,we observed placental deformities in KLF12-overexpressing mouse ***(s):This study demonstrated that elevated levels of KLF12 disrupt trophoblast syncytialization by downregulating GCM1 *** findings suggest that KLF12 may be a novel candidate gene contributing to unexplained miscarriages.

关键词： KLF12 GCM1 Syncytialization Miscarriage

Stepped-up development of accelerator mass spectrometry method for the detection of ^(60)Fe with the HI-13.tandem accelerator

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Nuclear science and Techniques 2024年第4期35卷 136-143页

作者： Yang Zhang Sheng-Quan Yan Ming He qing-Zhang Zhao Wen-Hui Zhang Chao-Xin Kan Jian-Ming zhou Kang-Ning Li Xiao-Fei Wang Jian-Cheng Liu Zhao-Hua Peng Zhuo Liang Ai-Ling Li Jian Zheng Qi-Wen Fan yun-Ju Li You-Bao Wang Zhi-Hong Li Yang-Ping Shen Ding Nan Wei Nan yu-Qiang Zhang Jia-Ying-Hao Li jun-Wen Tian Jiang-Lin Hou Chang-Xin Guo Zhi-Cheng Zhang Ming-Hao Zhu yu-Wen Chen yu-Chen Jiang Tao Tian jin-Long Ma Yi-Hui Liu jing-yu dong run-Long Liu Mei-yue-Nan Ma Yong-Shou Chen Wei-Ping Liu Bing Guo China Institute of Atomic Energy P.O.Box 275(10)Beijing 102413China college of science Southern University of Science and TechnologyShenzhen 518055China School of Physics Xi’an Jiaotong UniversityXi’an 710049China

The Moon provides a unique environment for investigating nearby astrophysical events such as *** samples retain valuable information from these events,via detectable long-lived“fingerprint”radionuclides such as^(60)*** this work,we stepped up the development of an accelerator mass spectrometry(AMS)method for detecting^(60)Fe using the HI-13.andem accelerator at the China Institute of Atomic Energy(CIAE).Since interferences could not be sufficiently removed solely with the existing magnetic systems of the tandem accelerator and the following Q3. magnetic spectrograph,a Wien filter with a maximum voltage of±60 kV and a maximum magnetic field of 0.3.T was installed after the accelerator magnetic systems to lower the detection background for the low abundance nuclide^(60)Fe.A 1μm thick Si_(3.N_(4) foil was installed in front of the Q3. as an energy *** particle detection,a multi-anode gas ionization chamber was mounted at the center of the focal plane of the ***,an^(60)Fe sample with an abundance of 1.125×10^(-10)was used to test the new AMS *** results indicate that^(60)Fe can be clearly distinguished from the isobar^(60)*** sensitivity was assessed to be better than 4.3.10^(-14)based on blank sample measurements lasting 5.8 h,and the sensitivity could,in principle,be expected to be approximately 2.5×10^(-15)when the data were accumulated for 100 h,which is feasible for future lunar sample measurements because the main contaminants were sufficiently separated.

关键词： Accelerator mass spectrometry Wien filter Isobar separation Supernovae Chang'e-5 lunar samples

Searching for^(76)Ge neutrinoless double beta decay with the CDEX-1B experiment

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Chinese Physics C 2024年第10期48卷 11-22页

作者： Bing-Tao Zhang jun-Zheng Wang Li-Tao Yang Qian yue Ke-jun Kang yuan-jing Li Hai-Peng An C.Greeshma Jian-Ping Chang yun-Huan Chen Jian-Ping Cheng Wen-Han Dai Zhi Deng Chang-Hao Fang Xin-Ping Geng Hui Gong Qiu-Ju Guo xu-yuan Guo Li He Sheng-Ming He jin-Wei Hu Han-Xiong Huang Tu-Chen Huang Hai-Tao Jia Xi Jiang S.Karmakar Hao-Bin Li Jian-Min Li jin Li Qian-yun Li Ren-Ming-Jie Li xue-Qian Li yu-Lan Li Yi-Fan Liang Bin Liao Fong-Kay Lin Shin-Ted Lin Jia-xuan Liu Shu-Kui Liu Yan-dong Liu yu Liu yuan-yuan Liu Zhong-Zhi Liu Hao Ma yu-Cai Mao Qi-yuan Nie jin-Hua Ning Hui Pan Ning-Chun Qi Jie Ren Xi-Chao ruan Ze She Manoj Kumar Singh Tian-Xi Sun Chang-Jian Tang Wei-You Tang Yang Tian Guang-Fu Wang Li Wang qing Wang yu-Feng Wang yun-Xiang Wang Henry-Tsz-King Wong Shi-Yong Wu yu-Cheng Wu Hao-Yang Xing rui xu Yin xu Tao xue yu-Lu Yan Nan Yi Chun-xu yu Hai-jun yu Jian-Feng yue Ming Zeng Zhi Zeng Feng-Shou Zhang Lei Zhang Zhen-Hua Zhang Zhen-yu Zhang Kang-Kang Zhao Ming-Gang Zhao Ji-Fang zhou Zu-Ying zhou jing-jun zhou Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua UniversityBeijing 100084 Department of Physics Tsinghua UniversityBeijing 100084 Institute of Physics Academia SinicaTaipei 11529 NUCTECH Company Beijing 100084 YaLong River Hydropower Development Company Chengdu 610051 college of Nuclear science and technology Beijing Normal UniversityBeijing 100875 college of Physics Sichuan UniversityChengdu 610065 School of Physics Peking UniversityBeijing 100871 Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413 Sino-French Institute of Nuclear and technology Sun Yat-sen UniversityZhuhai 519082 School of Physics Nankai UniversityTianjin 300071 Department of Physics Banaras Hindu UniversityVaranasi 221005 Department of Physics Beijing Normal UniversityBeijing 100875

We operated a p-type point contact high purity germanium(PPCGe)detector(CDEX-1B,1.008 kg)in the China jinping Underground Laboratory(CJPL)for 500.3.days to search for neutrinoless double beta(0νββ)decay of^(76)Ge.A total of 504.3.kg⋅day effective exposure data was *** anti-coincidence and the multi/single-site event(MSE/SSE)discrimination methods were used to suppress the background in the energy region of interest(ROI,1989–2089 keV for this work)with a factor of 23.A background level of 0.3. counts/(keV⋅kg⋅yr)was *** lower limit on the half life of^(76)Ge 0νββdecay was constrained as T_(1/2)^(0ν)>1.0×10^(23.yr(90%C.L.),corresponding to the upper limits on the effective Majorana neutrino mass:3.2–7.5 eV.

关键词： neutrinoless double beta decay CDEX point-contact germanium detector ^(76)Ge

The In-Flight Realtime Trigger and Localization Software of GECAM

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Research in Astronomy and Astrophysics 2024年第10期24卷 11-24页

作者： Xiao-yun Zhao Shao-Lin Xiong Xiang-Yang Wen Xin-Qiao Li Ce Cai Shuo Xiao Qi Luo Wen-Xi Peng dong-Ya Guo Zheng-Hua An Ke Gong jin-yuan Liao Yan-Qiu Zhang yue Huang Lu Li Xing Wen Fei Zhang jing Duan Chen-Wei Wang dong-Li Shi Peng Zhang Qi-Bin Yi Chao-Yang Li Yan-Bing xu Xiao-Hua Liang Ya-qing Liu Da-Li Zhang Xi-Lei Sun Fan Zhang Gang Chen Huan-yu Wang Sheng Yang Xiao-jing Liu Min Gao Mao-Shun Li jin-{3. Wang Xing {3. Yi Zhao Wang-Chen xue Chao Zheng Jia-Cong Liu Xing-Bo Han jin-Ling Qi Jia Huang Ke-Ke Zhang Can Chen Xiong-Tao Yang dong-Jie Hou yu-Sa Wang rui Qiao Xiang Ma Xiao-Bo Li Ping Wang Xin-Ying Song Li-Ming Song Shi-Jie Zheng Bing Li Hong-Mei Zhang yue Zhu Wei Chen Jian-Jian He Zhen Zhang jin Hou Hong-jun Wang Yan-Chao Hao Xiang-yu Wang Zong-yuan Yang Zhi-Long Wen Zhi Chang yuan-yuan Du rui Gao Xiao-Fei Lan Yan-Guo Li Gang Li xu-Fang Li Fang-jun Lu Hong Lu Bin Meng Feng Shi Hui Wang Hui-Zhen Wang yu-Peng xu Jia-Wei Yang xue-Juan Yang Shuang-Nan Zhang Chao-yue Zhang Cheng-Mo Zhang Zhi-Cheng Tang Cheng Cheng Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of Chinese Academy of sciences Chinese Academy of SciencesBeijing 100049China School of Information science and technology Southwest Jiaotong UniversityChengdu 611756China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Physics and Space science college China West Normal UniversityNanchong 637002China Department of Astronomy Beijing Normal UniversityBeijing 100875China Innovation Academy for Microsatellites of CAS Shanghai 201203China Changchun university of science and technology Changchun 130022China Chinese Academy of sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China

Realtime trigger and localization of bursts are the key functions of GECAM,an all-sky gamma-ray monitor launched on 2020 December *** developed a multifunctional trigger and localization software operating in the CPU of the GECAM Electronic *** onboard software has the following features:high trigger efficiency for real celestial bursts with a suppression of false triggers caused by charged particle bursts and background fluctuation,dedicated localization algorithm optimized for both short and long bursts,and low time latency of the trigger information which is downlinked through the Global Short Message Communication service of the global BeiDou navigation *** paper provides a detailed description of the design and development of the trigger and localization software system for *** covers the general design,workflow,the main functions,and the algorithms used in the *** paper also includes on-ground trigger tests using simulated gamma-ray bursts generated by a dedicated X-ray tube,as well as an overview of the performance for real celestial bursts during its in-orbit operation.

关键词： telescopes instrumentation:detectors methods:observational

Two-dimensional materials for future information technology: status and prospects

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science China(Information sciences) 2024年第6期67卷 1-147页

作者： Hao QIU Zhihao yu Tiange ZHAO Qi ZHANG Mingsheng xu Peifeng LI Taotao LI Wenzhong BAO Yang CHAI Shula CHEN Yiqi CHEN Hui-Ming CHENG Daoxin DAI Zengfeng DI Zhuo dong Xidong DUAN yuhan FENG yu FU jingshu GUO Pengwen GUO yue HAO jun HE Xiao HE jingyi HU Weida HU Zehua HU Xinyue HUANG Ziyang HUANG Ali IMRAN Ziqiang KONG Jia LI Qian LI Weisheng LI Lei LIAO Bilu LIU Can LIU Chunsen LIU Guanyu LIU Kaihui LIU Liwei LIU Sheng LIU yuan LIU donglin LU Likuan MA Feng MIAO Zhenhua NI jing NING Anlian PAN Tian-Ling REN Haowen SHU Litao SUN yue SUN Quanyang TAO Zi-Ao TIAN dong WANG Hao WANG Haomin WANG Jialong WANG junyong WANG Wenhui WANG Xingjun WANG yeliang WANG yuwei WANG Zhenyu WANG Yao WE... School of Electronic science and Engineering Nanjing University School of Integrated Circuits Interdisciplinary Research Center for Future Intelligent Chips (Chip-X)Nanjing University School of Integrated Circuit science and Engineering Nanjing University of Posts and Telecommunications State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences School of Physics and Key Lab of Quantum Materials and Devices of the Ministry of Education School of Electronic Science & EngineeringSoutheast University college of Integrated Circuits State Key Laboratory of Silicon and Advanced Semiconductor MaterialsZhejiang University Suzhou Laboratory State Key Laboratory of Integrated Chips and Systems School of MicroelectronicsFudan University Shaoxin Laboratory Department of Applied Physics The Hong Kong Polytechnic University Key Laboratory for Micro-Nano Physics and technology of Hunan Province College of Materials Science and EngineeringHunan University college of Integrated Circuits Zhejiang University Shenzhen Geim Graphene Center Shenzhen Key Laboratory of Layered Materials for Value-Added ApplicationsTsinghua-Berkeley Shenzhen Institute & Institute of Materials ResearchTsinghua Shenzhen International Graduate SchoolTsinghua University State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZijingang CampusZhejiang University National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences CAS Key Laboratory of Nanophotonic Materials and Devices & Key Laboratory of Nanodevices and Applications i-LabSuzhou Institute of Nano-Tech and Nano-Bionics (SINANO)Chinese Academy of Sciences college of Chemistry and Chemical Engineering Hunan University Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education) Department of PhysicsRenmin University of China School

Over the past 70 years, the semiconductor industry has undergone transformative changes,largely driven by the miniaturization of devices and the integration of innovative structures and materials. Two-dimensional(2D) materials like transition metal dichalcogenides(TMDs) and graphene are pivotal in overcoming the limitations of silicon-based technologies, offering innovative approaches in transistor design and functionality, enabling atomic-thin channel transistors and monolithic 3. integration. We review the important progress in the application of 2D materials in future information technology, focusing in particular on microelectronics and optoelectronics. We comprehensively summarize the key advancements across material production, characterization metrology, electronic devices, optoelectronic devices, and heterogeneous integration on silicon. A strategic roadmap and key challenges for the transition of 2D materials from basic research to industrial development are outlined. To facilitate such a transition, key technologies and tools dedicated to 2D materials must be developed to meet industrial standards, and the employment of AI in material growth, characterizations, and circuit design will be essential. It is time for academia to actively engage with industry to drive the next 10 years of 2D material research.

关键词： two-dimensional (2D) materials information technology production technology standardization of characterization microelectronicdevices optoelectronic devices multi-functional integration