李

Assume a Lie algebra g has a form B which has all the useful properties of Killingform:bilinearity nondegeneracy,symmetry and invariance.Note that for such a Liealgebra the adjoint representation is equivalent to the coadjoint representation.We callit a symmetric self-dual Lie algebra and the form B an invariant scalar product.

在第一部分的最后一节，我们引进了拟Heisenberg代数的概念，证明了这些李代数均为具有非极大秩的CN李代数，进一步我们还证明了这些CN李代数构成的集合与极大秩幂零李代数构成的集合之间存在着1-1对应关系。

In Chapter 2, we will use one-parameter subgroups of the Lie group to develop a version ofNewton\'s method on an arbitrary Lie group for maps from a Lie group to its correspondingLie algebra which is independent of affine connections on the Lie group and differs fromNewton\'s method for sections on Riemannian manifolds.

在第2章中，我们主要研究关于从李群到其李代数的映射f的Newton法的收敛性。利用李群的单参数子群来给出关于映射f的Newton迭代点列，此Newton迭代与李群上的联络无关，也与第1章中研究的Newton迭代不同。

Associated it we define a root system. In a suitable condition we define a Lie algebra to realize this root system, namely, using an Euler cocycle given by intersection matrix, we define an infinitely dimensional vector space with the Lie operation becomes a Lie algebra.

在适当的条件之下，我们给出了该根系的一个李代数实现，即利用该相交矩阵确定的一个欧拉cocycle和根系，我们定义了一个无限维向量空间和李运算，并且证明了这个无限维向量空间在该李运算之下构成一个李代数。

Li has recorded several CDs and a DVD to his credit, including Prophetic Bird and Salut d'Amour on CDs with POLOARTS in 2002 and 2004 respectively, a DVD in 2005 entitled La Ronde Des Lutins performing on Stradivari BELLO 1687, Stradivari RIES 1693 and Guarneri BALOKOVIC 1729, and a SACD entitled The Soul of Violin recorded on four violins provided by Stradivari Society.

2007年4月8日下午3点半李氏将在三藩市Herbst Theatre举行首次个人独奏会，演译理察施特劳斯优美的小提琴奏鸣曲及由巴济尼、陈钢、萨拉沙蒂、秦咏城、衞斯曼作曲及米尔斯坦改编自李斯特和盖希文的经典小提琴精彩曲目，与李氏三重奏成员之一的钢琴家李天慧合作演出，门票分＄50＄28＄18，现已在City Box Office及三藩市吴兴记等发售，订票及查询请致电1-415-392-4400 或 1-415-781-8330，喜爱音乐的朋友不容错过。

Cardiovascular Institute, Fuwai Cardiovascular Disease Hospital, Peking Union Medical College, Beijing 100037, China; Center for Disease Control and Prevention of Shun Yi District, Beijing 101300, China; Center for Disease Control and Prevention of Wujin District, Changzhou 213161, China; Beijng Ji Shui Tan Hospital, Beijing 100035, China; Institute of Geriatrics of Jiangsu Province, Nanjing 210024, China; Traditional Chinese Medicine Hospital of Shijingshan, Beijing 100043, China

作者：作者：胡泊，李卫，李印东，姜维平，李东，李骏，田秀珍作者单位：中国协和医科大学，中国医学科学院阜外心血管病医院，北京 100037 来源：医学期刊/医院管理与预防医学、卫生学收藏本文章

Currently Lie group methods are of huge value and they are popular abroad and lead to the computation of matrix exponential to be a hot topic.

近年来在国外流行的李群方法，由于具有重大的科学价值，在李群算法发展的需求下，李群、李代数里的指数计算，也成为了研究的热点。

As investigated, the shape of the fruit was mainly rotundity, and the color of the fruit were red, black, yellow, mauve. Variation coefficient of mineral elements, which revealed wider variation range and rich genetic diversity. Among them, Fe, the content and the variation coefficient of which was the highest(2.12 mg·100g-1 and 26.99％), it has large potential for futher selection. Ripe fruit of 12 wild myrobalan plum seedlings were analyzed using head space-solid phase microextraction and gas chromatography-mass spectrometry. The results showed considerable genetic variations in these aspects: The total content of volatile components, the classes and contents of each compounds classes, the segregation ratio, and content of main components. There were 83 compounds in total belonging to 6 classes detected in 12 wild myrobalan plum seedlings, including esters, alcohols, ketones, aldehydes, heterocycle and Hydrocarbons. Among them, Formic acid, hexyl ester, the content of which was the highest(4.33 μg·g-1),was important character impact odors.

结果表明，①新疆野生樱桃李实生株系的果实形状主要为圆形，少数为椭圆形、卵圆形、卵形和宽卵形，果实颜色有黄色、红色、紫红色和黑色等4种类型，野生樱桃李果实纵径、横径、单果重、果形指数以及可溶性固形物含量均存在一定程度的变异，遗传多样性较为丰富，其中以单果重的变异系数最大(9.13 %)；②新疆野生樱桃李实生株系果肉组织的Zn、Ca、Mg、Mn、Fe及Cu等6种矿质元素含量变异丰富，其中以Fe元素的含量（平均值为2.12 mg·100g-1）和变异系数（26.99％）最高，进一步筛选高铁性状单株的潜力很大；③从新疆野生樱桃李12个实生株系中共鉴定出醇类、醛类、酯类、酮类、烃类及杂环类等6类83种挥发性化合物，各实生株系挥发性化合物总含量、挥发性化合物种类及其含量以及主要挥发性化合物分离比率与含量等存在广泛的遗传变异，遗传多样性较为丰富，其中以甲酸己酯含量最高（平均值为4.33 μg·g-1），是野生樱桃李果实香气形成的重要特征性化合物。

Furthermore,we show that there exists a 1-1 correspondence between the set ofthese CN Lie algebras and the set of nilpotent Lie algebras of maximal ranks.

第三节引进了CN李代数和CS李代数的概念，证明了极大秩幂零李代数和Heisen-berg代数均为CN李代数。

This paper isolated and identified Listeria monocytogenes by the first step of the physiologic and biochemical tests from 1627 samples. 1627 random samples from 9 sorts of quick-frozen food, aquatic products, resh meat, meat protucts, fruit, vegetables, bean product, raw milk, salted product were collected from supermarkets and peasant-trade mart and some faeces of animal and person. The total detectable rate of Listeria monocytogenes was 14.5%. The results showed that the detectable rate of Listeria monocytogenes were higher. It expressed that pollution level of Listeria monocytogenes in Baoding and circumjacent area was taller.

本文对采自速冻食品、水产品、生肉、熟肉制品、水果、蔬菜、豆制品、奶及奶制品、腌制品等9类食品及动物粪便和人源粪便共1627份样品进行了单增李斯特菌的分离与鉴定，单增李斯特菌的总检出率为14.5%，表明单增李斯特菌的检出率偏高，在9类食品样品中，生肉中单增李斯特菌的检出率最高，高达27.4%，其次是水产品，检出率为24.7%，应引起高度重视，以免引起食源性疾病的暴发。

Their structures were identified by chemical and spectral analysis. RESULTS Five compounds were isolated and identified as stigmasterol 3-O-β-D-glucopyranoside, 20β-hydroxy-ecdysone,β-L-thymidine, pennogenin 3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside and pennogenin 3-O-α-L-rhamnopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→4)-[α-L-rhamnopyranosyl-(1→2)-]-β-D-glucopyranoiside.

结果 分离并鉴定了5个化合物，分别是Δ5，22-豆甾醇3-O-β-D-葡萄吡喃糖苷，20β-羟基蜕皮激素，β-L-脱氧胸腺嘧啶苷，偏诺皂苷元3-O-α-L-鼠李吡喃糖基－(1→2)-β-D-葡萄吡喃糖苷和偏诺皂苷元3-O-α-L-鼠李吡喃糖基－(1→4)-α-L-鼠李吡喃糖基－(1→4)-［α-L-鼠李吡喃糖基－(1→2)-］-β-D-葡萄吡喃糖苷。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。