四体

The Mn is coordinated by four carbonyl O atoms from the DMF molecules and two phenolate O atoms of the picrate anions, forming a distorted octahedral structure.

在不对称单胞中存在着两种配位环境相同的Mn离子，四个DMF中的羰基氧原子和两个苦味酸根离子中的酚氧原子直接和Mn离子配位，形成了一个扭曲的八面体几何构型。

1 To mimic the active centers of tyrosinate iron enzymes whichcontain phenolate donors, new tripodal ligand, N-(2-hydroxybenzyl)-N, N-bis(2-benzimidazolymethyl) aminewhich contain imidazoleand phendate groups were designed and synthesized and its iron com-plexes 〓(2)(where Mim=N-Methylimidazole) and Fe 〓(3) were prepared andcharacterized by various spectroscopic methods.

1.1 为了模拟酪酸铁酶活性中心，设计并合成了含有酚羟基和苯骈咪唑基四齿配体N，N-(2-羟基苯)-N，N-二氨，并合成它的铁配合物：Fe〓、Fe〓〓(2)和Fe〓，并经各种谱学手段表征了这些铁配合物。

Four physical meaning of elementary constant of the universe ; Mirror value of elementary constant of the universe in today ; Root cause of elementary constant of the universe is the information entity of the universe .

给出了今天基本宇宙常数的四个主要物理含义，给出了今天基本宇宙常数镜像数值的计算结果，指出了其物理根源是宇宙信息体的时空数值，并根据这个镜像数值反向计算出了宇宙诸总体物理特性的数值。

In the current study, a series of cationic α-helical peptides of 20 a.a. were designed and synthesized based on four structural parameters, including charge, polar angle, hydrophobicity, and hydrophobic moment. Several methods were performed to describe the influence of these parameters on the antimicrobial and hemolytic activity, and on the permeabilizing effect on model membranes. The potential of these parameters to increase the antibacterial activity and to improve the prokaryotic selectivity is assessed.

本实验利用自行设计合成的人工抗菌胜肽当模型，固定长度为 20 个胺基酸，改变其电荷、极性角度、疏水性及疏水性矩等四种结构特性，并利用其对各种不同病原菌之抗菌活性及对兔子红血球细胞的溶血活性来研究其结构特性的改变对其抗菌活性、选择性及微脂体膜的渗透性之影响，以期望改变结构参数能增加抗菌活性及对原核的选择性。

Are preparatively cultured in the differentiation culture mediums(IBA 1 mg/L, BA0.4 mg/L) for two days, and AS is added in preparative culture medium and MSo bacterial liquid that has been centrifugated. The extents of colouration are not identical.

影响瞬时表达的因素很多，本实验主要对四个因素进行测试：预培养天数(1天、2天)、不同激素配比的分化培养(IBA 1.0mg/L BA 0.4mg/L、IBA 0.2mg/L BA 2mg/L)、是否加入乙酰丁香酮、外植体类型(子叶、真叶、下胚轴、根)。

The tongs all passes in the machine the gearing on the bed what tongs the gearing on realizes with superficial contact in the cowgirl on the bed in machine or matches.when the tongs installs in the machine bed work on the stage,the center of gravity of the tongs should be as far as possible low,center of gravity the more high an accepts should the dint is more big,the tongs bottom four directions should bulge,make its contact good,or the bottom establishes four a feets.when the tongs installs on the machine bed principal axis,the tongs install the to should have the enough match accuracy with principal axis cowgirl surface,and guarantee the gearing the stability dependable.

夹具体在机床上的安装都是通过夹具体上的安装基面与机床上的相应表面的接触或配合实现的。当物流设备需要的公司体在机床工作台上安装时，夹具的服装厂应尽量低，重心越高则支承面应力越大，夹具底面四边应凸出，使其接触良好，或底部设置四个支脚。当夹具体在机床主轴上安装时，夹具安装基面与主轴相应表面应有足够的配合精度，并保证安装稳定可靠。

Our aim was to do a combined analysis of three randomised clinical trials to assess the effect of a prophylactic quadrivalent HPV vaccine on the incidence of these diseases.

我们的目标是通过三组随机临床试验的联合分析来评估预防性四价体HPV疫苗在这些疾病发病率中的作用。

Prophylactic administration of quadrivalent HPV vaccine was effective in preventing high-grade vulval and vaginal lesions associated with HPV16 or HPV18 infection in women who were naive to these types before vaccination.

解释：预防性注射四价体HPV疫苗能有效防护女性在接种疫苗前初次感染HPV16 或 HPV18发生病毒相关性高分级的外阴和阴道损伤。

An IP address shows the netizen that is Guangzhou city to say in leave a message: Click when me ' watch monumental close shot ' when pushbutton, I see monument east, south, on the west, the tablet body lower end of boreal all sides is engraving: Aseismatic monument, the magnitude of shake of earth of plain of short of Wenshui River, time and azimuth, life is the same as brightness, character of quadruplet of coexistence of mountains and rivers-land.

一位IP地址显示为广州市的网友在留言中说：当我点击'观看纪念碑近景'的按钮时，我看到纪念碑东、南、西、北四面的碑体下端刻着：抗震纪念碑，汶川大地震的震级、时间和方位，日月同辉，山川共存四组文字。

This study lays a solid foundation for the dynamic simulation of ion exchange channels in a quadruplex using the ABEEMσπ/MM model.

以上研究为进一步应用ABEEMσπ/MM模型进行G-四链体中离子交换通道的动力学模拟打下坚实的基础。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。