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| 1 | Sequential auto-reclosing strategy for hybrid HVDC breakers in VSC-based DC grids显示文摘The use of overhead lines for power transmission in the future high-voltage and large-capacity voltagesource converter(VSC)-based direct current(DC) grid will significantly increase the probability of temporary faults.To eliminate potential adverse impacts such as erroneous protection, line-insulation failure, and even damage to power electronic devices resulting from a DC breaker reclosing operation with the traditional sequential autoreclosing strategy, a new sequential auto-reclosing strat-egy for hybrid HVDC breakers(HHBs) in VSC-based DC grids is proposed. This strategy is based on the step-by-step operation of the transfer branch in the HHB. As a result,du/dt resulting from the HHB reclosing operation is greatly reduced, and therefore those potential negative impacts can be eliminated. Several other advantages are also presented.The feasibility and validity of the proposed strategy are verified in a four-terminal annular VSC-based DC grid electromagnetic transient model. | Xiangyu PEI Guangfu TANG Shengmei ZHANG | 2019 | Journal of Modern Power Systems and Clean Energy2019，7，3： | 5 |
| 2 | Cardiopulmonary resuscitation and termination of resuscitation on out-of-hospital cardiac arrest in China显示文摘To the Editor: Out-of-hospital cardiac arrest (OHCA) is a major public health challenge. Early initiation, good quality cardiopulmonary resuscitation (CPR), and the use of an automated external defibrillator (AED) have been reported to significantly improve the survival and long-term outcomes in survivors of OHCA. | Xiaojun He Yang Liu Sijia Tian Jun Liang Shengmei Niu Jinjun Zhang | 2022 | Chinese Medical Journal2022，，9： | 2 |
| 3 | The capacity of the quantum multiple bit-flip channel 显示文摘 | Zhang Guangqiang Zhao Shengmei | 2006 | Transaction of CCEIC2006，14，13： | 1 |
| 4 | Pulmonary tuberculoma spiral CT diagnosis and differential diagnosis of显示文摘 | Zhang Shengmei Yu Wei day Wiese E Zhiyong | | 0，，04： | 1 |
| 5 | Association between duration of return of spontaneous circulation and outcomes after out-of-hospital cardiac arrest显示文摘Background:Return of spontaneous circulation(ROSC)is a core outcome element of cardiopulmonary resuscitation(CPR);however,the definition or criterion of ROSC is disputed and varies in resuscitation for out-of-hospital cardiac arrest(OHCA).Methods:This was a retrospective study of 126 patients with OHCA who achieved ROSC between January and December 2020.The probability of survival after OHCA related to CPR and ROSC duration was analyzed using the probability density function and empirical cumulative density functions.Results:There were no significant differences between ROSC sustained until emergency department arrival and that sustained for at least 20 minutes in terms of the 24-hour survival rate(31.3%[31/99]vs.35.7%[10/30];P=0.84),30-day survival rate(23.2%[23/99]vs.25.0%[7/30];P=0.99),or survival at 30 days with cerebral performance category(CPC)1 and 2(18.2%[18/99]vs.10.7%[3/30];P=0.44).The Kolmogorov-Smirnov test values from the empirical cumulative density functions with ROSC sustained until hospital arrival and that sustained for at least 20 minutes were 0.44,0.20,and 0.24 for CPC 1 or 2,CPC 3 or 4,and CPC 5,respectively.Conclusion:Return of spontaneous circulation is a core outcome element of CPR.It should be defined as sustained for at least 20 minutes or until arrival at the emergency department and as a basic standard for evaluating resuscitation success after OHCA. | Huixin Lian Andong Xia Xinyan Qin Sijia Tian Xuqin Kang Luxi Zhang Shengmei Niu Fei Qin Jinjun Zhang | 2022 | Emergency and Critical Care Medicine2022，2，4： | 1 |
| 6 | Synthesis of cellulose benzoates under homogeneous conditions in an ionic liquid显示文摘 | Jinming Zhang Jin Wu Yan Cao Shengmei Sang Jun Zhang Jiasong He | 2009 | Cellulose2009，，2： | 1 |
| 7 | Synthesis and Photovoltaic Properties of Polythiophene Incorporating with 3,4-Difluorothiophene Units显示文摘二 polythiophene 衍生物使用氟的符号原子并且己基或撤退电子、捐赠的取代者被综合了的 hexyloxy 组。到 polythiophene 脊梁的氟的符号原子的介绍同时降低 HOMO 并且进一步缩小 bandgap,和 hexyloxy 方面链的更强壮的捐赠电子的能力减少 bandgap。作为结果, poly [3-hexylthiophene-2,5-diyl-alt-3,4-difluorothiophene ](PHTDFT ) 显示出 5.31/1.83 eV 并且 poly 的人和 bandgap [3,4-dihexyloxythiophene-2,5-diyl-alt-3,4-difluorothiophene ](PDHOTDFT ) 显示出 5.14/1.68 eV 的人和 bandgap,两个比 P3HT 的 4.76/2.02 eV 低。得益于更低的人, PHTDFT : PC61BM (1:1 ) 聚合物太阳能电池在太阳的照明 AM1.5 (100 mW/cm2 ) 下面获得 1.11% 的力量变换效率和 0.79 V 的打动的开电路的电压。 | Linquan Huang Dong Yang Qiang Gao Yan Liu Shengmei Lu Jian Zhang Can Li | 2013 | Chinese Journal of Chemistry2013，31，11： | 1 |
| 8 | Antibacterial properties of extracts of Solidago canadensis and their potential use as dietary supplements in red swamp crayfish(Procambarus clarkii)显示文摘Canadian goldenrod(Solidago canadensis)is one of the most destructive invasive weeds in Southeastern China.To evaluate its potential application as dietary supplement in red swamp crayfish(Procambarus clarkii),the antibacterial properties of aqueous and ethanol extracts of this plant against three major pathogenic bacteria in crayfish aquaculture were examined.Inhibition zone tests and determination of minimum inhibitory concentration revealed that the extracts had lower antibacterial activity than extracts from two traditional medicinal plants that possess antibacterial properties,garlic(Allium sativum)and cortex phellodendri(Phellodendron chinense).However,they did exhibit greater antibacterial effects than extracts from another widely used medicinal plant,Sophora flavescens,and an aquatic weed,Alternanthera philoxeroides.Aqueous extracts of Canadian goldenrod gave greater inhibition than the ethanol extracts.Crayfish fed a diet with 2%these aqueous extracts exhibited significantly higher enzyme activity of alkaline phosphatase,catalase and phenoloxidase(P<0.05).Based on the results of this study,we conclude that aqueous extracts of Canadian goldenrod are highly promising for the development of new dietary supplement for use in crayfish aquaculture. | Manhong YE Lei ZHANG Jiaqi GE Haifeng SUN Jingjing NI Shengmei YANG Wanhong WEI | 2015 | Frontiers of Agricultural Science and Engineering2015，2，4： | 0 |
| 9 | Effects of a closed-loop system against SARS-CoV-2 at the Beijing 2022 Olympic Winter Games:a descriptive and modeling study显示文摘BACKGROUND:To assess the efficacy of the epidemic prevention measures of the“closed-loop”system adopted by the Beijing 2022 Olympic Winter Games(BOWG).METHODS:We retrospectively collected and analyzed information,including age,sex,nationality,vaccination status,date of diagnosis,and date of entry,from 280 SARS-CoV-2-positive individuals identified during the BOWG.A susceptibility-exposed-infectious-remove model was employed to evaluate the effectiveness of epidemic prevention strategies on controlling the spread of SARS-CoV-2 under different scenarios during the BOWG.RESULTS:Regarding SARS-CoV-2-positive cases,97.9%were imported,and 96.4%were asymptomatic.The median age was 37 years(range:29–47 years),and 73.9%were male,with the majority of cases being broadcasters and European attendees.Regarding vaccination status,93.5%were fully vaccinated,and six cases were considered to have been infected in the closed-loop system during the BOWG.Assuming that the BOWG adopted a semi-closed-loop management system,the cumulative number of confirmed cases would be 1,137 for quick quarantine measures(3 d later)implemented and 5,530 for delayed quarantine measures(9 d later)implemented.This modeling revealed that stringent pandemic prevention measures and closed-loop management effectively controlled the spread of SARS-CoV-2 during the BOWG.CONCLUSION:Imported cases are considered the main risk factor for SARS-CoV-2 transmission during mass gatherings,but a comprehensive closed-loop system could minimize transmission among attendees and general personnel. | Rong Xiong Jieping Zhou Wenning Li Jie Liu Jing Lou Sijia Tian Huixin Lian Shengmei Niu Luxi Zhang Wenhang Li Jinjun Zhang | 2023 | World Journal of Emergency Medicine2023，14，6： | 0 |
| 10 | Random Forest Based Very Fast Decision Tree Algorithm for Data Stream显示文摘The Very Fast Decision Tree(VFDT)algorithm is a classification algorithm for data streams.When processing large amounts of data,VFDT requires less time than traditional decision tree algorithms.However,when training samples become fewer,the label values of VFDT leaf nodes will have more errors,and the classification ability of single VFDT decision tree is limited.The Random Forest algorithm is a combinational classifier with high prediction accuracy and noise-tol-erant ability.It is constituted by multiple decision trees and can make up for the shortage of single decision tree.In this paper,in order to improve the classification accuracy on data streams,the Random Forest algorithm is integrated into the process of tree building of the VFDT algorithm,and a new Random Forest Based Very Fast Decision Tree algorithm named RFVFDT is designed.The RFVFDT algorithm adopts the decision tree building criterion of a Random Forest classifier,and improves Random Forest algorithm with sliding window to meet the unboundedness of data streams and avoid process delay and data loss.Experimental results of the classification of KDD CUP data sets show that the classification accuracy of RFVFDT algorithm is higher than that of VFDT.The less the samples are,the more obvious the advantage is.RFVFDT is fast when running in the multithread mode. | DONG Zhenjiang LUO Shengmei WEN Tao ZHANG Fayang LI Lingjuan | 2017 | ZTE Communications2017，15，B12： | 0 |
| 11 | A Case for Cloud-Based Mobile Search显示文摘Mobile search is beset with problems because of mobile terminal constraints and also because its characteristics are different from the traditional Internet search model. This paper analyzes cloud computing technologies-especially mass data storage, parallel computing, and virtualization-in an attempt to solve technical problems in mobile search. The broad prospects of cloud computing are also discussed. | Yan Gao Li Fu Zhenwei Zhang Shengmei Luo Ping Lu | 2011 | ZTE Communications2011，9，1： | 0 |
| 12 | High efficiency Polar coding key reconciliation scheme in wireless channel显示文摘Recently, physical layer security in wireless communication system attracts much attention, and the reconciliation protocol plays an important role in the final secure key distillation, since the secret keys extracted from the realistic characteristics of the wireless channel may not be the same between the transmitter and legitimate receiver. A high efficiency Polar coding key reconciliation scheme is proposed in the paper to correct these errors. In the scheme, the transmitter generates a random stream with the known frozen bits and positions. After that, the transmitter encodes the random bit stream to a code stream by Polar encoding and sends the corrupted version of the code stream and the secret keys to the legitimate receiver. The receiver decodes the received stream with Polar successive cancellation decoding algorithm. With Polar encoding, the receiver obtains a random bit stream, and achieves the final secure key by XOR operator. The results show that the proposed scheme has a higher efficiency and a lower computational complexity, along with a high success rate. The consistency of the keys is very good after the reconciliation. | Zhang Xiaotian Zhao Shengmei | 2019 | The Journal of China Universities of Posts and Telecommunications2019，26，3： | 0 |
| 13 | Inducing Fe 3d Electron Delocalization and Spin‑State Transition of FeN_(4) Species Boosts Oxygen Reduction Reaction for Wearable Zinc–Air Battery显示文摘Transition metal-nitrogen-carbon materials(M-N-Cs),particularly Fe-N-Cs,have been found to be electroactive for accelerating oxygen reduction reaction(ORR)kinetics.Although substantial efforts have been devoted to design Fe-N-Cs with increased active species content,surface area,and electronic conductivity,their performance is still far from satisfactory.Hitherto,there is limited research about regulation on the electronic spin states of Fe centers for Fe-N-Cs electrocatalysts to improve their catalytic performance.Here,we introduce Ti_(3)C_(2) MXene with sulfur terminals to regulate the electronic configuration of FeN_(4) species and dramatically enhance catalytic activity toward ORR.The MXene with sulfur terminals induce the spin-state transition of FeN_(4) species and Fe 3d electron delocalization with d band center upshift,enabling the Fe(II)ions to bind oxygen in the end-on adsorption mode favorable to initiate the reduction of oxygen and boosting oxygen-containing groups adsorption on FeN_(4) species and ORR kinetics.The resulting FeN_(4)-Ti_(3)C_(2)Sx exhibits comparable catalytic performance to those of commercial Pt-C.The developed wearable ZABs using FeN_(4)-Ti_(3)C_(2)Sx also exhibit fast kinetics and excellent stability.This study confirms that regulation of the electronic structure of active species via coupling with their support can be a major contributor to enhance their catalytic activity. | Shengmei Chen Xiongyi Liang Sixia Hu Xinliang Li Guobin Zhang Shuyun Wang Longtao Ma Chi‑Man Lawrence Wu Chunyi Zhi Juan Antonio Zapien | 2023 | Nano-Micro Letters2023，15，4： | 0 |
| 14 | A digital lightning prototype system: DLPS/HUST显示文摘Digital lightning is an important thematic branch of the digital earth.Lightning data are complex,momentary,discrete,dynamic and spatio-temporal in nature.Hence,making great progress in their management,analysis and service is challenging.Many studies have been directed towards this field all over the world.Some different relevant systems are currently available.However,most of them focus on a single or a few aspects of lightning applications,rather than taking an overall account of lightning detection,management,analysis and service from the strategic perspective of the digital earth.Lightning disaster also demands a better developed spatial information technology in this field than at present.The idea of the digital earth offers a reasonable scheme to address these issues.Based on reviews of the concept,development and progress of the digital earth,an integrated technical framework of a digital lightning prototype system(DLPS)is proposed,including its data,functions and implementation of subsystems,which aims at the facilitation,management,accessing,visualisation,application,release and sharing of lightning data.Some key technologies are also carefully discussed to facilitate the construction of the DLPS.This framework could provide a helpful guide to future lightning research and hazard mitigation,as well as enrich connotation on the digital earth.So far,there are still many difficulties in multilevel grid construction that need to be solved. | Shengmei Yang Qiuwen Zhang Yongzhi Zhang Wenguang Wei Tingting Shi | 2013 | International Journal of Digital Earth2013，6，S02： | 0 |
| 15 | Pt/TiO_(2–x) nanofibrous aerogel for effective nitrogen reduction: A simple strategy for simultaneous Pt formation and TiO_(2–x) vacancy engineering显示文摘Electrocatalysis plays an increasingly important role in converting atmospheric molecules(e.g.,N_(2),CO_(2) and H_(2)O)to value-added products(e.g.,NH_(3),C_(2)H_(4)and H_(2)).However,developing a simple strategy for preparing catalysts with high performance for the effective conversion of clean energy is still full of chal-lenges.Herein,we describe a straightforward,one-step reduction method to achieve the formation of Pt nanoparticles(NPs)and the vacancy engineering of TiO_(2-x)nanofibers(NFs)simultaneously,which can be accomplished in 5 min.Furthermore,a Pt/TiO_(2-x)nanofibrous aerogel(NA)with an ordered cellular archi-tecture is prepared through a directional freezing technology.The Pt/TiO_(2-x)NA with excellent mechanical properties can be made into a self-supporting electrode for electrocatalytic N_(2)reduction reaction(NRR),showing high NH_(3) yield rate(4.81×10^(-10)mol/s cm^(-2))and Faraday efficiency(14.9%)at-0.35 V vs.RHE. | Meng Zhang Jin Dai Shengmei Huang Dan Fang Yitao Liu Jianyong Yu Bin Ding Andreas Greiner | 2022 | Chinese Chemical Letters2022，33，2： | 0 |
| 16 | Persistent Data Layout in File Systems显示文摘Data layout in a file system is the organization of data stored in external storages. The data layout has a huge impact on performance of storage systems. We survey three main kinds of data layout in traditional file systems: in-place update file system, log-structured file system, and copy-on-write file system. Each file system has its own strengths and weaknesses under different circumstances. We also include a recent usage of persistent layout in a file system that combines both flash memory and byte-addressable non-volatile memory.With this survey, we conclude that persistent data layout in file systems may evolve dramatically in the era of emerging non-volatile memory. | LUO Shengmei LU Youyou YANG Hongzhang SHU Jiwu ZHANG Jiacheng | 2018 | ZTE Communications2018，16，3： | 0 |
| 17 | Vacancy-enhanced Mo-N_(2) interaction in MoSe_(2) nanosheets enables efficient electrocatalytic NH_(3) synthesis显示文摘NH_(3) plays an essential role in human life since it is an important raw material for fertilizers,plastics and rubbers production.As an NH_(3) synthesis technology under ambient conditions,electrocatalytic N_(2) reduction reaction(NRR)has great potential to replace the energy-intensive Haber-Bosch process.The key of electrocatalytic NRR is the exploration of efficient catalysts.Transition metal Mo is promising since it exists naturally in nitrogenase due to the unique Mo-N_(2) interaction;particularly in the form of 2D material such as MoSe_(2),the surface area is maximized for more active sites.However,the NRR performance of MoSe_(2) is still unsatisfactory because Mo is only exposed at the semi-open edge,and the electronegative Se-mantled surface area remains inaccessible to N_(2).Herein,we propose a simple and effective strategy to create high-concentration Se vacancies in MoSe_(2) through heteroatom doping induced lattice strain,which effectively enhances the Mo-N_(2) interaction on the surface area.In result,high NH_(3) yield(3.04×10^(–10)mol s^(–1)cm^(–2))and Faraday efficiency(21.61%)are attained at–0.45 V vs.RHE in 0.1 mol/L Na_(2)SO_(4). | Shuhong Wu Meng Zhang Shengmei Huang Lihai Cai Dannong He Yitao Liu | 2023 | Chinese Chemical Letters2023，34，1： | 0 |
| 18 | A Distributed In-Memory Database Solution for Mass Data Applications显示文摘In this paper, a Distributed In-Memory Database (DIMDB) system is proposed to improve processing efficiency in mass data applications. The system uses an enhanced language similar to Structured Query Language (SQL) with a key-value storage schema. The design goals of the DIMDB system is described and its system architecture is discussed. Operation flow and the enhanced SQL-like language are also discussed, and experimental results are used to test the validity of the system. | Dong Hao Luo Shengmei Zhang Hengsheng | 2010 | ZTE Communications2010，8，4： | 0 |
| 19 | High-performance broadband flexible photodetector based on Gd_(3)Fe_(5)O_(12)-assisted double van der Waals heterojunctions显示文摘Flexible photodetectors are fundamental components for developing wearable systems,which can be widely used for medical detection,environmental monitoring and flexible imaging.However,compared with 3D materials,lowdimensional materials have degraded performance,a key challenge for current flexible photodetectors.Here,a highperformance broadband photodetector has been proposed and fabricated.By combining the high mobility of graphene(Gr)with the strong light–matter interactions of single-walled carbon nanotubes(SWCNTs)and molybdenum disulfide(MoS2),the flexible photodetector exhibits a greatly improved photoresponse covering the visible to near-infrared range.Additionally,a thin layer of gadolinium iron garnet(Gd_(3)Fe_(5)O_(12),GdlG)film is introduced to improve the interface of the double van der Waals heterojunctions to reduce the dark current.The SWCNT/GdIG/Gr/GdIG/MoS2 flexible photodetector exhibits a high photoresponsivity of 47.375 A/W and a high detectivity of 1.952×1012 Jones at 450 nm,a high photoresponsivity of 109.311 A/W and a high detectivity of 4.504×10^(12) Jones at 1080 nm,and good mechanical stability at room temperature.This work demonstrates the good capacity of GdIGassisted double van der Waals heterojunctions on flexible substrates and provides a new solution for constructing high-performance flexible photodetectors. | Ze Zhang Peirui Ji Shaobo Li Fei Wang Shengmei He Yiwei Cheng Shuhao Zhao Kaili Li Xiaomin Wang Yu Wang Shuming Yang | 2023 | Microsystems & Nanoengineering2023，9，4： | 0 |
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