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Poles of L-Functions on Quaternion Groups

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Chinese Annals of Mathematics,Series B 2014年第4期35卷 519-526页

作者： ?etin ürtS Department of Mathematics TOBB University of Economics and Technology Ankara Turkey

The author shows that the(partial) standard Langlands L-functions on quarternion groups have at most simple poles at certain positive integers.

关键词： Siegel Eisenstein series L-Functions Quaternion groups RegularizedSiegel-Weil formula

One-Pot Synthesis of N-Boc-2, 5-bis(trimethylsilyl)pyrrolidine

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Chinese Chemical Letters 2001年第12期12卷 1061-1064页

作者： Dong, JC Li, rt Cheng, TM Peking Univ Sch Pharmaceut Sci Dept Bioorgan Chem Beijing 100083 Peoples R China

N-Boc-2, 5-bis(trimethylsilyl)pyrrolidine 4 was synthesized from the reaction of N-Boc-pyrrolidine 1 with trimethylsilyl chloride (TMSCl) at optional temperature in one-pot in good yield.

关键词： N-Boc-2 5-bis(trimethylsilyl)pyrrolidine trimethylsilylation one-pot

Effects of Electric Field on the Electronic Structures in Electroluminescent Polymers

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Journal of Materials Science & Technology 1999年第4期15卷 354-356页

作者： Fu, RL Chu, JH Fu, rt Li, L Sun, X Chinese Acad Sci Shanghai Inst Tech Phys Natl Lab Infrared Phys Shanghai 200083 Peoples R China Fudan Univ Dept Phys Shanghai 200433 Peoples R China

The effects of the electric field on the electronic structures in electroluminescent polymers were studied with the tight-binding model including electron-phonon interactions plus an applied electric field. It is found that the applied electric field changes both the energy levels and the electronic wavefunctions in electroluminescent polymers: applied field induces two localized electronic states near the midgap, and also polarizes these localized electronic states, so the polarization occurs at weak or moderate fields. In addition, the strong field will dissociate a bipolaron exciton and lead to photoluminescence quenching.

关键词： Polymers

Novel　Type　CO_2　Methanation　Catalysts　over　Ni／Sepiolite　and　Ru／Sepiolite　System

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Chinese Chemical Letters 1996年第10期7卷 956-959页

作者： Deng, GC Xu, L Mu, RC Chen, rt Lu, W NANKAI UNIV DEPT CHEMTIANJIN 300071PEOPLES R CHINA TIANJIN ENVIRONM PROTECT BUR TIANJIN 300191PEOPLES R CHINA

A Novel type single-component catalyst in which small amounts of nickel of ruthenium supported on sepiolite nas found to be a very efficient methanation catalyst for carbon dioxide at high space velocity.

关键词： Ru and Type over Methanation Novel Sepiolite System CO2 Catalysts 二氧化碳 Ni

Three new records of Cortinarius(Cortinariaceae)for the Turkish Mycota from Trabzon,Turkey

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Studies in Fungi 2020年第1期5卷 517-525页

作者： Sesli E ÖrtücüS Trabzon University Fatih Faculty of EducationMathematics and Science EducationDepartment of BiologyTrabzonTurkey Erzurum Technical University High Technology Research and Application CentreErzurumTurkey

Basidiomata of Cortinarius were collected during the field studies in 2019 and identified based on both morphological and molecular *** Cortinarius species *** cadi-aguirrei,*** and *** are recorded for the first time... 详细信息

关键词： Agaricales Basidiomycota ITS identification taxonomy

Antibody detection and sequence analysis of sporadic HEV in Xiamen region

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World Journal of Gastroenterology 1999年第3期5卷 270-272页

作者： Huang rt Li XY Xia XB Yuan XT Liu MX Li DR Acad Mil Med Sci Inst Microbiol & Epidemiol Beijing 100850 Peoples R China

INTRODUCTIONHepatitis E virus (HEV) is transmitted through a fecal-oral route［1］. HEV induces acute hepatitis and is responsible for a significant portion of the fulminant hepatitis in epidemic and sporadic cases, especially in the mixed infection patients and women in their third trimester of pregnancy［1］. It has been reported that HEV infection is more prevalent in underdeveloped and developing countries in Asia, Africa, and Central America, but is rare in developed countries［1］. In China, a large outbreak occurred between 1986 and 1988 in Xinjiang, and sporadic spread was often found in other regions.

关键词： HEV

Photoelectrochemical Behaviours of Tandem Semiconductive Electrode

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Chinese Chemical Letters 1997年第8期8卷 721-724页

作者： Jiang, DL Han, ZH Song, YH Wang, QF Tong, rt Li, GC HEBEI TEACHERS UNIV DEPT CHEMHEBEI 050016PEOPLES R CHINA HEBEI CHEM ENGN INST HEBEI 050016PEOPLES R CHINA

The photoelectrochemical behaviour of the multilayer semiconductive electrode(GaAs/AlxGa1-xAs)with the structure of N+NP and N+NPP was studied in Na2SO4 solution. Compared with single kind semiconductor electrode, the commposite one has broader photoresponse spectral region and larger open-circuit photovoltage,consequently gives higher solar energy conversion efficiency.

关键词： CELLS SI

Two New Triterpenoid Saponins from Aster Lingulatus

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Chinese Chemical Letters 1996年第11期7卷 1005-1008页

作者： Hu, B Shao, Y Qin, GW Ho, CT Chin, CK Rosen, rt ACAD SINICA SHANGHAI INST MAT MEDSHANGHAI 200031PEOPLES R CHINA RUTGERS STATE UNIV COOK COLLNEW BRUNSWICKNJ 08903

Two new saponins named asterlingulatosides A and B were isolated from the whole plants of Aster lingulatus. Their structures were elucidated by spectral and chemical evidence as 3-O-beta-D-glucopyranosyl-3 beta, 16 alpha-dihydroxyolean-12-en-28-oic acid -28-O-alpha-L-arabinopyranoside and 3-O-beta-D-glucopyranosyl-3 beta,16 alpha-dihydroxyolean-12-en-28-oic acid -28-O-alpha-L-rhamnopyranosyl-(1-->2)- alpha-L-arabinopyranoside respectively. They showed inhibitory activity on DNA synthesis of human leukemia HL-60 cells.

关键词： Lingulatus Two New Triterpenoid Saponins from Aster

Assessment of Defects and Collapsed Sites in Self-Assembled Alkanethiol Monolayer on Gold by Cyclic Voltammetry and ***

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Chinese Chemical Letters 1998年第12期9卷 0-0,0-0页

作者： Diao, P Jiang, DL Cui, XL Gu, DP Tong, rt Zhong, B Chinese Acad Sci Inst Coal Chem Taiyuan 030001 Peoples R China Hebei Teachers Univ Dept Chem Shijiazhuang 050016 Peoples R China

Self-assembly of octadecyl mercaptan on gold was investigated by cyclic voltammetry(CV) and electrochemical impedance spectroscopy (EIS). Results of CV experiments show thatthere are no structUral defects exposed directly to the redox couple in solution, but EISexperiments indicate that collapsed sites exist in the monolayer. A method to estimate the degree ofdisorder in the Au/thiol monolayer surface is proposed by using admittance plane plot.

关键词： Self-assembled monolayer cyclic voltammetry a.c. impedance ideally polarizable electrode surface roughness