查询词典 Eu

While co-doped with Ce/Tb and Sm/Eu, the emission spectrum is due to 4?

双掺杂Ce/Tb、Sm/Eu的发射光谱分别归属Eu(上标 2+)的4？

April 7, 2006 --- For the millions of Internet users in Europe, this is an exciting time, because the new .eu domain became available today to any European Union resident or any organization or company established within the EU.

对成千上万的欧洲互联网用户来说，今天是一个激动人心的时刻，欧共体内的每一个居民，设立在欧共体内的每一家机构和公司从今天起，都可以使用。EU域名

For the millions of Internet users in Europe, this is an exciting time, because the new .eu domain became available today to any European Union resident or any organization or company established within the EU.

对成千上万的欧洲互联网用户来说，今天是一个激动人心的时刻，欧共体内的每一个居民，设立在欧共体内的每一家机构和公司从今天起，都可以使用。EU域名

Eu/Eu〓 Normolized by (hondrite of silicious rock show Faziba-Yangba belt is high heat anomal region and a favorable ore-forming zone.

硅质岩的Eu/Eu〓提供古热水循环系统的热流信息显示，筏子坝—阳坝一带为高热异常区，是本区一有利成矿地带。

For Southwestern Margin of Aqikekule Lake ophiolite, their field geological, petrological, minerological, petrochemical and geochemical characteristics show that:① it outcropped as tectonic slices along the near west-to-east strike Kunzhong fault and is composed of metamorphic perodotties, cumulates and volcanic rocks, in which, chromites are distributed in the upper part of metamorphic peridotites as pods, or in the lower part of cumulates as near-strata;② metamorphic peridotites include serpentinites, chromite-bearing serpentinites, chlorite-epidote schists and chromitites, of which, chromitites have nodular and orbicular structure, and cumulates include pyroxenits, serpentinites, chromite-bearing serpentinites, chromites and metamorphically mafic rocks and only basalts are seen in volcanic rocks;③ Cr# of chromites suggest that they formed in the SSZ and Al〓O〓 and TiO〓 of metamorphic peridotites also suggest SSZ environment;④ metamorphic peridotites have V type and enriched LREE patterns, cumulates have from strongly depleted LREE, flat REE to enriched LREE patterns with universally striking positive Eu anomalies and basalts show flat REE or slight enriched LREE patterns with no Eu anomalies;⑤ trace element and Sm-Nd isotope characteristics of metamorphic peridotites imply their strikingly heterogeneous mantle character ε〓(t+4.39～+26.20 and later Nb, Ta fertilization;⑥ trace element characteristics of basalts and their tectonic diagrams show they probably formed in the rifted island arc or back-arc basin environment.

对阿其克库勒湖西南缘蛇绿岩，野外地质、岩石学、矿物学、岩石化学以及地球化学等特征表明：①该蛇绿岩以近东西向、沿昆中断裂呈构造岩片出露，由变质橄榄岩、堆晶岩和火山岩三个单元组成，其中见铬铁岩呈豆荚状产于变质橄榄岩的上部，或呈似层状产于堆晶岩的下部；②变质橄榄岩包括蛇纹岩、含铬铁矿蛇纹岩、绿帘绿泥片岩和铬铁岩等类型，其中，豆荚状铬铁矿具有结核状构造和球状构造，堆晶岩包括辉石岩、蛇纹岩、含铬铁矿蛇纹岩、铬铁岩和变质基性岩等类型，火山岩仅见玄武岩；③铬铁矿的Cr#表明其形成在俯冲带，变质橄榄岩的Al〓O〓和TiO〓成分也指示了SSZ环境；④变质橄榄岩的稀土配分型式见V型和LREE富集型两种型式，堆晶岩表现出从LREE强烈亏损、REE平坦分布到LREE富集的配分特征，并且普遍具有醒目的正Eu异常，玄武岩的稀土配分型式表现为平坦型或LREE略富集，无Eu异常；⑤变质橄榄岩的微量元素及Sm-Nd同位素特征指示了其地幔的显著不均一性ε〓(t为+4.39～+26.20以及Nb、Ta在后期的富集；⑥玄武岩的微量元素特征及构造图解表明其可能形成在裂谷岛弧或不成熟的弧后盆地环境。

The emission spectrum of Eu complex in solid state indi-cates the absence of any symmetric element around Eu ion, consistentwith the crystallographic results.

Eu化合物固态荧光光谱表明在Eu离子配位环境是缺乏任何对称元素，这与晶体结构是一致的。

The fluorescence spectra of Eu~(3+) may be used to study the structure ofcompounds.The band shift of Nd~(3+) in its absorption spectra,the red-to-orangeintensity ratio of the Eu~(3+) emission(~5D_0→~7F_2)/(~5D_0→~7F_1)and the yellow-to-blue intensity ratio of the Dy~(3+) emission~4F_(9/2→~6H_(13/2)/~4F(9/2→~6H(15/2)intheir fluorescence spectra may be used to study the degree of covalency of theLn-O bond and its relation with the electronegativity of M in Ln-O-M.

本文介绍了利用 Eu~(3+)的荧光光谱研究化合物的结构；利用 Nd~(3+)的吸收光谱的谱带位移和 Eu~(3+)的荧光光谱的红橙发射强度比(~5D_0→~7F_2)/(~5D_0→~7F_1)和 Dy~(3+)的黄兰比~4F_(9/2→~6H_(13/2)/~4F_(9/2→~6H_(15/2)，了解Ln—O—M中 Ln—O 化学键的共价程度以及 M 的电负性对共价程度的关系；利用吸收光谱、荧光光谱和磁化率研究稀土的价态以及利用磁化率研究化合物的组成。

A pair of redox peak of Eu~(3+) of the concentration of 1×10~(-4) mol/L appeared on both bare pyrolytic graphite electrode and bare glassy carbon electrode in HAc-NaAc 0.2 mol/L pH 6.0 buffer, and controlled by the diffusion current. There was also a good reversible redox peak of Eu~(3+) of the concentration of 1×10~(-3) mol/L on bare pyrolytic graphite electrode in Heps 0.01 mol/L pH7.4 and in the charge of diffusion current.

当底液为0.2mol/L pH6.0的HAc-NaAc缓冲溶液、Eu~(3+)浓度为1.0×10~(-4)mol/L时，在裸热解石墨电极与裸玻碳电极上均有一对氧化还原峰，且受扩散电流控制；当底液为0.01mol/L pH7.4 Hepes缓冲溶液、Eu~(3+)浓度为1.0×10~(-3)mol/L时，在裸热解石墨电极上出现一对可逆性非常好的氧化还原峰，同样受扩散电流控制。

The photophysical property of the complex is investigated by means of IR spectra, Raman spectrum and laser excited, high-resolved luminescence spectra which indicates one kind of Eu site with local symmetry of C 2v in the complex.

合成了植物生长素对氯苯氧乙酸和 1，10 邻菲罗林与铕的三元配合物Eu 3·Phen 。对所合成化合物进行了元素分析和热谱分析。通过测定配合物的红外光谱、拉曼光谱和激光激发高分辨荧光光谱研究了配合物的光物理性质。荧光光谱表明配合物中Eu离子只具有一种化学环境，Eu格位的局部对称性是C2v

Geochemical characteristics indicate S-type granites and volcanic rocks depleted in sodium and enriched in potassium, with 62.42%～78.02% w(SiO2), 7.66%～9.13% w(K2O+Na2O), 1.18～2.62 w(K2O)/w(Na2O), and Rittmann index δ of 1.67～3.78. They are enriched in LREE with an average LREE/HREE ratio of 10.94×10-6, and generally depleted Eu with an minimum δEu less than 0.31 especially in the ignimbrite and biotite granite, which have experienced a significant process of separation and crystallization of plagioclases.ΣREE at the main stage of the magmatic activity decreases with time.

地球化学特征显示矿区火山——侵入岩属于贫钠富钾的S型花岗岩，其w(SiO2)值为62.42%～78.02%、w(K2O +Na2O)值为7.66%～9.13%、w(K2O)/w(Na2O)比值为1.18～2.62、里特曼指数δ为1.67～3.78；矿区岩石LREE/HREE比值平均为10.94×10-6，属于轻稀土富集型；Eu普遍亏损，特别是熔结凝灰岩、黑云母花岗岩δEu＜0.31，表明经历了显著的斜长石的分离结晶作用；自早至晚主阶段岩浆活动稀土总量逐渐降低。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。