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期刊New 9,19-cycloartane triterpenoid from the root of Cimicifuga foetida
《中国天然药物:英文版》2014年第4期294-296,共3页ZHU Di-Fan NIAN Yin WANG Hai-Yan ZHANG Zhi-Run SONG Yan-Bo LI Rong-Tao QIU Ming-Hua 
supported by the National Natural Science Foundation of China(No.U1132604);Knowledge Innovation Program of the CAS(No.KZCX2-XB2-15-03);Foundation of State Key Laboratory of Phytochemistry and Plant Resources in West China(P2008-ZZ05)
AIM: To study the 9, 19-cycloartane triterpenes from the roots of Cimicifuga foetida. METHOD: Chromatographic separations by silica gel, C18 reversed phase silica gel, and high-performance liquid chromatography(HPLC) ...显示全部
关键词:Cimifuga foetida Ranuncluaceae 9 19-Cycloartane triterpene Acetoxy groups 
期刊Knowledge &Utilization of Long Lasting Impregnated Nets among Housewives in Al Moneera City and Al Koozi Villages, Hodieda Governorate, Republic of Yemen 2007
《健康(英文)》2021年第3期306-322,共17页Nahid A. Baktayan Ali M. Assabri Belquis A. Farea Arwa A. Farea 
Malaria is considered as one of the main health problem in the Republic of Yemen. In February 2006 National Malaria Control Program started freely distribution of Long Lasting Impregnated Nets (LLINs) for vulnerable g...显示全部
关键词:Vulnerable groups to Malaria Infection Long-Lasting Impregnated Nets (LLINs) Use Rate Housewives Al Moneera City and Al Koozi Villages Hodieda Governorate Yemen 
期刊On the Number of Finite Non-isomorphic Abelian groups in Short Intervals
《科学通报:英文版》1994年第7期615-616,共2页曹晓东 
Let the arithmetic function a(n) denote the number of non-isomorphic Abeliangroups of order n;k, positive integer, and x≥0. We setA_k(x)= sum from n≤x a(n)=k to (1)andA_k(x;h) =A_k(x+h)-A_k(x). A. Ivice first invest...显示全部
关键词:On the Number of Finite Non-isomorphic Abelian groups in Short Intervals 
期刊弱换位子群
《石河子大学学报:自然科学版》1996年第2期77-79,共3页陈华 
本文给出了弱换位子群的概念,讨论了弱换位子群的性质(性质1-6)。
关键词: 幂零群 弱换位子群 
期刊Algebra Automorphisms of Quantized Enveloping Algebras Uq(■)被引量:1
《中国科学:数学英文版》1994年第9期1025-1031,共7页查建国 
The algebra automorphisms of the quantized enveloping algebra Uq(g) are discussed, where q is generic. To some extent, all quantum deformations of automorphisms of the simple Lie algebra g have been determined.
关键词:quantum groups LIE ALGEBRAS automorphisms. 
期刊新型季铵盐相转移催化剂的制备及在合成碳官能有机硅酯化物单体中的应用
《山东师范大学学报:自然科学版》2009年第4期-,共4页张其坤 贝逸翎 宋倩 
山东省自然科学基金
通过引入硅烷基制备了一系列新型季铵盐类相转移催化剂,并用红外、核磁谱图对其结构进行了表征,用一氯取代的八甲基环四硅氧烷与醋酸钾的两相反应验证了其催化效果.
关键词:季铵盐类 相转移催化剂 制备 合成 有机硅 酯化物 单体 FUNCTIONAL groups SYNTHESIS APPLICATION PHASE TRANSFER QUATERNARY AMMONIUM SALT 八甲基环四硅氧烷 两相反应 核磁谱图 催化效果 氯取代 醋酸钾 验证 烷基 
期刊Determination of Elements of groups Ⅲ A and Ⅳ A Using Microwave Plasma Torch Atomic Emission Spectrometry
《高等学校化学研究:英文版》1997年第2期34-40,共7页ZHANG Han qi, YUAN Xiang lin, LIANG Feng, LIU Si pei, ZHAO Li wei and JIN Qin han ** (Department of Chemistry, Jilin University, Changchun, 130023) 
DeterminationofElementsofGroupsⅢAandⅣAUsingMicrowavePlasmaTorchAtomicEmisionSpectrometryZHANGHan-qi,YUANXian...显示全部
关键词:ATOMIC EMISSION spectromery MICROWAVE PLASMA TORCH groups ⅢA and ⅣA 
期刊Crystallography in Spaces E<sup>2</sup>, E<sup>3</sup>, E<sup>4</sup>, E<sup>5</sup>...N<sup>0</sup>I Isomorphism Classes: Properties and Applications to the Study of Incommensurate Phase Structures, Molecular Symmetry groups and Crystal Families of Space E<sup>5</sup
《理论数学进展(英文)》2015年第4期137-149,共13页R. Veysseyre D. Weigel T. Phan H. Veysseyre 
This paper mainly consists of the classification of all crystallographic point groups of n-dimensional space with n ≤ 6 into different isomorphism classes. An isomorphism class is defined by a type of finite mathemat...显示全部
关键词:Crystallographic POINT groups ISOMORPHISM Classes Incommensurate Phase Structures WPV (Weigel Phan Veysseyre) Symbols of POINT groups 
期刊Peptide photocaging:A brief account of the chemistry and biological applications
《中国化学快报:英文版》2018年第7期1058-1062,共5页Wing Ho So Clarence T.T.Wong Jiang Xia 
Financial support for this work came from the University Grants Committee of Hong Kong (GRF Nos. 14321116 and 14306317, and AoE/M-09/12)
Light is arguably the most convement non-invasive stimulant to perturb or control specinc cnemical reactions in the biological systems. Upon light illumination, photosensitive molecules incur conformational changes or...显示全部
关键词:Photo-protecting groups Photocaged PEPTIDES Photocaged PROTEINS Photodecaging 
期刊On k(<i>D</i>)-Blocks
《理论数学进展(英文)》2015年第4期150-154,共5页Ahmad M. Alghamdi 
The objective of this research paper is to study numerical relationships between a block of a finite group and a defect group of such block. We define a new notion which is called a strongly k(D)- block and give a nec...显示全部
关键词:Brauer’s k(B) Problem BLOCKS with Cyclic DEFECT groups 
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