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Research Overview of the Best Versions of A Dream in Red Mansions since the 20th Century

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学术界 2014年第7期 271-275页

作者： zheng yun School of Literature Fujian Normal University Fuzhou Fujian 350007

There are many different versions of A Dream in Red Mansions and some versions are different from the others in content,which has drawn great attention from the academic circle. Since the 20 th century,different scholars have different views upon which is best among the 13 versions of A Dream in Red Mansions. Some believe that the versions that showthe real writing of Cao Xueqin are the best; while others believe that the versions with the vivid description and artistic influence are the best,and there are still others who stick to both the two views. This paper attempts to overviewsuch researches for almost a century,which is undoubtedly meaningful for the further study of A Dream in Red Mansions in the future.

关键词：红楼梦版本综述艺术感染力学术界曹雪芹

Growth and optical properties of ytterbium and rare earth ions codoped CaF2-SrF2 eutectic solid-solution(RE=Y^(3+),Gd^(3+),La^(3+))

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Journal of Rare Earths 2021年第4期39卷 390-397页

作者： Binbin jiang Lihe zheng Dapeng jiang Handi Yin jiangang zheng Qiuhong Yang Guofeng Cheng Liangbi Su School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 201899China School of Physics and Astronomy Yunnan UniversityKunming 650091China Laser Fusion Research Center China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Science and Technology on High Energy Laser China Academy of Engineering and PhysicsMianyang 621900China

Ytterbium and rare earth ions(RE=Y,Gd,La)codoped CaF_(2)-SrF_(2)single crystals(3 at%Yb,6 at%RE:CaF_(2)-SrF_(2))were fabricated by temperature gradient technology(TGT).All the space groups remain the same Fm3m as that of Yb:CaF_(2)-SrF_(2).The lattice parameter a,unit cell volume V,as well as bond length of Ca/Sr-F and F-F increase in the sequence of rare-earth ions radius Y^(3+)

关键词： Rare earth ions Optical materials Crystal growth Luminescence Raman spectroscopy

Synthesis of Ferrocene-Modified Carbon Nitride Photocatalysts by Surface Amidation Reaction for Phenol Synthesis

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Chinese Journal of Chemistry 2014年第6期32卷 498-506页

作者： Xiangju Ye yun zheng Xinchen Wang State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhouFujian 350002China

A polymeric Fc-CO-NH-C_(3)N_(4)(Fc-CN)material was synthesized by amidation reaction of ferrocenecarboxylic acid(Fc-COOH)with NH_(2)groups on the surface of mesoporous graphitic carbon nitride(MCN).The properties of the as-synthesized samples were characterized by X-ray diffraction,Fourier transform infrared spectroscopy,UV-Vis diffuse reflectance spectra,N2 adsorption-desorption isotherm,photoluminescence spectroscopy,transmis-sion electron microscopy,electron paramagnetic resonance,(photo)electrochemical measurement and X-ray photo-electron *** resultant catalysts were investigated as heterogeneous catalysts for the selective oxida-tion of benzene to phenol using H_(2)O_(2)as a green oxidant under visible light *** results reveal that Fc-modified samples can not only extend the visible light absorption,but also accelerate the bulk-to-surface charge transfer and separation via surface dyadic structures,both of which are favorable for phenol production from ben-zene photocatalytic hydroxylation with H_(2)O_(2).Under the optimal conditions,up to 16.9%phenol yield(based on benzene)is obtained by Fc-CN/1.5-5 sample,and the corresponding Fe content is about 0.64 wt%.Furthermore,after the second run,no significant decrease of the activity(in term of TOF)and the selectivity is found in Fc-CN/_(1.0)-5 *** with the experimental results and Fenton-chemistry,a possible photocatalytic reaction mecha-nism on the hydroxylation of benzene to phenol at neutral medium with visible light is proposed.

关键词： carbon nitride ferrocenecarboxylic acid benzene oxidation photocatalysis phenol

The First Disease X is Caused by a Highly Transmissible Acute Respiratory Syndrome Coronavirus

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Virologica Sinica 2020年第3期35卷 263-265页

作者： Shibo jiang zheng-Li Shi Key Laboratory of Medical Molecular Virology(MOE/NHC/CAMS) School of Basic Medical SciencesFudan UniversityShanghai 200032China New York Blood Center The Lindsley F.Kimball Research InstituteNew YorkNY 10065USA CAS Key Laboratory of Special Pathogens Wuhan Institute of VirologyCenter for Biosafety Mega-ScienceChinese Academy of SciencesWuhan 430071China

Based on the announcement of the World Health Organization(WHO) in 2018, the Wuhan pneumonia caused by an unknown etiology should be recognized as the first Disease X. Later, the pathogen was identified to be a novel coronavirus denoted 2019-nCoV, which has 79.5% and 96% whole genome sequence identify to SARS-CoV and bat SARS-related coronavirus(SARSr-CoV-RaTG13), respectively, suggesting its potential bat origin. With high human-to-human transmission rate(R0), 2019-nCoV has quickly spread in China and other countries, resulting in 34,953 confirmed cases and 725 deaths as of 8 February 2020, thus calling for urgent development of therapeutics and prophylactics. Here we suggest renaming 2019-nCoV as "transmissible acute respiratory syndrome coronavirus(TARS-CoV)" and briefly review the advancement of research and development of neutralizing antibodies and vaccines targeting the receptor-binding domain(RBD) and viral fusion inhibitors targeting the heptad repeat 1(HR1) domain in spike protein of 2019-nCoV.

关键词： Coronavirus 2019-nCoV SARS-CoV Pneumonia Acute respiratory syndrome Disease X

Outage analysis of opportunistic multi-antenna relay selection in decode-and-forward relay networks

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The Journal of China Universities of Posts and Telecommunications 2010年第4期17卷 6-12页

作者： WANG Xiao-xiang zheng Zi-yun Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

This article studies the closed-form expressions of outage performance for opportunistic relay under aggregate power constraint in decode-and-forward （DF） relay networks over Rayleigh fading channels, assuming that multiple antennas are available at the relay node. According to whether instantaneous signal-to-noise ratio （SNR） or average SNR can be utilized for relay selection, two opportunistic relay schemes, opportunistic multi-antenna relay selection （OMRS） and average best relay selection （ABRS） are proposed. The performances of both two schemes are evaluated by means of theoretical analysis and simulation, it is observed that OMRS is outage-optimal among multi-antenna relay selection schemes and closely approaches the beamforming （BF） scheme known as theoretical outage-optimal. Compared with previous single-antenna opportunistic relaying （OR） scheme, OMRS brings remarkable performance improvement, which is obtained from maximum ratio combining （MRC） and beamforming techniques. It is also shown that the performance of ABRS in asymmetric channels is close to OMRS in the low and median SNR range.

关键词： relay selection multiple antennas multiple relays decode and forward cooperative networks

Rupintrivir is a promising candidate for treating severe cases of Enterovirus-71 infection

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World Journal of Gastroenterology 2010年第2期16卷 201-209页

作者： Zhang, Xiao-Nan Song, Zhi-Gang jiang, Ting Shi, Bi-Sheng Hu, yun-Wen Yuan, zheng-Hong Shanghai Publ Hlth Clin Ctr Res Unit Shanghai 201508 Peoples R China Fudan Univ Shanghai Med Coll Key Lab Med Mol Virol Shanghai 200032 Peoples R China

AIM:To evaluate the suitability of rupintrivir against Enterovirus 71(EV71)induced severe clinical symptoms using computational methods. METHODS:The structure of EV71 3C protease was predicted by homology *** binding free energies between rupintrivir and EV71 3C and human rhinovirus 3C protease were computed by molecular dynamics and molecular mechanics Poisson-Boltzmann/ surface area and molecular mechanics generalized-born/ surface area ***71 3C fragments obtained from clinical samples collected during May to July 2008 in Shanghai were amplified by reverse-transcription and polymerase chain reaction and sequenced. RESULTS:We observed that rupintrivir had favorable binding affinity with EV71 3C protease(-10.76 kcal/mol). The variability of the 3C protein sequence in isolates of various outbreaks,including those obtained in our hospital from May to July 2008,were also analyzed to validate the conservation of the drug binding pocket. CONCLUSION:Rupintrivir,whose safety profiles had been proved,is an attractive candidate and can be quickly utilized for treating severe EV71 infection.

关键词： Rupintrivir Hand foot and mouth disease Molecular mechanics Poisson-Boltzmann/surface area Molecular mechanics Generalized-Born/surface area Homology modeling Picornavirus

Invariant Symmetric Bilinear Forms and Derivation Algebras of Unitary Lie Algebras

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Algebra Colloquium 2016年第3期23卷 I0001-I0002,361-384页

作者： Yelong zheng Jiwen Gao yun Gao School of Mathematical Sciences and Wu Wen-Tsun Key Laboratory of Mathematics of Chinese Academy of Sciences University of Science and Technology of China Hefei 230026 China Department of Basic Courses Hefei College of Finance and Economics Hefei 230601 China Department of Mathematics and Statistics York University Toronto Ontario M3J 1P3 Canada

Invariant symmetric bilinear forms and derivation algebras of a unitary Lie algebra L over R are characterized：（L） ≌ （R＋/（[R, R] A R＋））＊ and Der（L） = Inn（L）＋ Der（L）0 = Inn（L）＋ SDer（R）, which recover what of the special linear Lie algebra and Steinberg Lie algebra over R, where R is a unital involutory associative algebra over a field F.

关键词： elementary unitary Lie algebra Steinberg unitary Lie algebra invariant sym-metric bilinear form derivation algebra

Admissible Solutions of Systems of Complex Partial Difference Equations on C^n

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Acta Mathematicae Applicatae Sinica 2015年第2期31卷 297-306页

作者： Ling-yun GAO Ze-mei zheng Department of Mathematics Jinan University Guangzhou

In a recent papers,some authors applied Nevanlinna theory to prove some results on complex difference equations reminiscent of the classical Malmquist theorem in complex differential equations. We will mainly investigate Malmquist theorem of a type of systems of complex partial difference equations on Cn,improvements and extensions of such results are presented in this paper.

关键词： Malmquist type meromorphic solution value distribution partial difference equations

Solid Oxide Electrolysis of H_(2)O and CO_(2) to Produce Hydrogen and Low‑Carbon Fuels

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Electrochemical Energy Reviews 2021年第3期4卷 508-517页

作者： yun zheng Zhongwei Chen Jiujun Zhang College of Sciences Institute for Sustainable EnergyShanghai UniversityShanghai 200444China Department of Chemical Engineering University of WaterlooWaterlooON N2L 3G1Canada

Solid oxide electrolysis cells(SOECs)including the oxygen ion-conducting SOEC(O-SOEC)and the proton-conducting SOEC(H-SOEC)have been actively investigated as next-generation electrolysis technologies that can provide high-energy conversion efficiencies for H_(2)O and CO_(2) electrolysis to sustainably produce hydrogen and low-carbon fuels,thus providing higher-temperature routes for energy storage and *** research has also focused on the promotion of SOEC critical components to accelerate wider practical *** on these investigations,this perspective will summarize the most recent progress in the optimization of electrolysis performance and long-term stability of SOECs,with an emphasis on material developments,technological approaches and improving strategies,such as nano-composing,surface/interface engineering,doping and in situ *** technical challenges are also analyzed,and future research directions are proposed to achieve SOEC technical maturity and economic feasibility for diverse conversion applications.

关键词： Solid oxide electrolysis cells Hydrogen production Carbon dioxide reduction Proton conductive electrolyte Optimization strategies