作者: 徐文国,章瑞春,常宏艳,卢士香,章元春 (Institute of Chemical Physics, Beijing Institute of Technology)
出处: 结构化学 2009 第28卷 第4期 P427-433
关键词: 结构稳定性;芳香性;GE;色素;核独立化学位移;密度泛函理论;硅;硫
摘要: Three-membered BeXP (X = C, Si, Ge) and CYP (Y = O, S, Se) rings are theo-retically investigated using density functional theory (DFT) methods at the ...
作者: XU WenGuo,ZHANG YuanChun,ZHAI Lei (Institute of Chemical Physics, Beijing Institute of Technology, Beijing 100081, China)
出处: 中国科学(B辑:化学)(英文版) 2009 第52卷 第12期 P2237-2242
关键词: DFT;calculation;geometric;structure;nucleus-independent;chemical;shift;molecular;orbital
摘要: Clusters Al2P2n-(n = 1―4) were theoretically investigated using density functional theory (DFT) methods at the B3LYP/6-311+G* and B3PW91/6-311+G* leve ...
作者: ZHANG Nan,TAO Ran,WANG Yue (Department of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China)
出处: 中国科学(E辑:技术科学)(英文版) 2009 第52卷 第7期 P2096-2103
关键词: bistatic;radar;ambiguity;function;integration;loss;resolution;acceleration
摘要: A bistatic range-velocity-acceleration ambiguity function (BRVAAF) is proposed. The model of radar measurements of an accelerating target involving th ...
作者: 杨利1;于伟2;张同来1;张建国1;刘振华1;吴瑞风1; (1State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology;2School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University)
出处: 结构化学 2009 第28卷 第4期 P405-408
关键词: 晶体结构测定;phen;二聚体;荧光发射;二元酸;X射线单晶衍射;单元;柔性
摘要: A dimeric coordination complex Cd2(ncpo)2(phen)2(H2O)2 was constructed by a flexible dicarboxylic acid, 2-nitro-4-carboxylphenoxyacetic acid. Its crys ...
作者: FENG YongJun,ZHANG Meng,HU MingXi,ZHENG Jie,JIAO WangWang,CHANG ZengYi (School of Life Science,Beijing Institute of Technology,Beijing 100081,China;School of Life Sciences,National Laboratory of Protein Engineering and Plant Genetic Engineering,Center for Protein Science,Peking University,Beijing 100871,China)
出处: 中国科学(C辑:生命科学)(英文版) 2009 第52卷 第11期 P997-1002
关键词: RbsD;oligomeric;protein;oligomeric;intermediate;refolding;reassembly
摘要: Many proteins exist as homo-oligomers in living organisms wherein the change of oligomeric status apparently serves as an effective means for modulati ...
作者: 袁浩1;周智明1;徐宝财2; (1School of Chemical Engineering & the Environment, Beijing Institute of Technology;2College of Chemical & Environment Engineering, Beijing Technology and Business University)
出处: 结构化学 2009 第28卷 第7期 P827-830
关键词: 二茂铁衍生物;晶体结构;乙基;氨基;羰基;合成;分子间氢键;单晶衍射
摘要: The title complex, (1S)-1,1\'-bis{[N-ethyl-N-(1-methylethyl)-amino]carbonyl}-2- (hydroxyldiphenylmethyl)-ferrocene ([Fe(C24H22NO2)(C11H16NO)]2·H2O, Mr ...
作者: XIE HuiMin,HU ZhenXing,DAI FuLong,LI YanJie,CHEN PengWan,ZHANG QingMing,HUANG FengLei (Applied Mechanics Laboratory AML, Department of Engineering Mechanics, School of Aerospace, Tsinghua University, Beijing 100084, China;State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China)
出处: 中国科学(E辑:技术科学)(英文版) 2009 第52卷 第7期 P2048-2053
关键词: digital;holographic;microscopy;phase-shifting;aberration;compensation
摘要: This paper proposes a new method that reconstructs the information of specimen by using random phase shift step in digital holographic microscopy (DHM ...
作者: Jie Ming WANG (Department of Mathematics, Beijing Institute of Technology, Beijing 100081, P. R. China;School of Mathematical Sciences and Laboratory of Mathematics and Complex Systems,Beijing Normal University, Beijing 100875, P. R. China)
出处: 数学学报(英文版) 2009 第25卷 第5期 P741-758
关键词: stochastic;comparison;preservation;of;positive;correlations;Levy-type;processes
摘要: The stochastic comparison and preservation of positive correlations for Levy-type processeson R~d are studied under the condition that Levy measure v ...
作者: WANG Meng,WU Feng,SU YueFeng,CHEN Shi (Beijing Key Laboratory of Environment, School of Chemical Engineering and Environment, Beijing Institute of Technology;National Development Center of High Technology Green Materials, Beijing 100081, China)
出处: 中国科学(E辑:技术科学)(英文版) 2009 第52卷 第9期 P2737-2741
关键词: LiCO1/3Ni1/3Mn1/3O2;CeO2;coating;Lithium-ion;battery
摘要: LiCo1/3Ni1/3Mn1/3O2 was coated by a layer of 1.0 wt% CeO2 via sol-gel method. The bared and coated LiMn1/3Co1/3Ni1/3O2 was characterized by X-ray diff ...
作者: WEI Ping,WU Dan,ZHONG Hanfang,DU Jianxin (School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China;Shanghai Key Lab of Electric Insulation and Thermal Aging, Shanghai 200240, China;Department of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China)
出处: 武汉理工大学学报:材料科学英文版 2009 第2期 P235-240
关键词: DOPO;flame;retardant;PC/ABS;silicon
摘要: A flame retardant (DPA-SiN) containing phosphorus, nitrogen and silicon elements was synthesized. The halogen free flame retardant was incorporated in ...
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