原子的

Nature, most elements have two or more isotopes, the same kinds of elements in the quality of the various isotopes of different, but the types and proportion constant (except for radioactive elements). In 1961, the carbon content of the most abundant in nature, a kind of isotope, carbon-12 atom of a quantity and quality of C as a 12 mass units to it as "benchmarks" for all isotopes of an element according to the average abundance The ratio of the benchmark is the atomic weight of this non-prime, that is listed in the periodic table of atomic weights.

自然界中大多数元素都有两种或更多的同位素，同种元素的各同位素质量不同，但其种类和比例是恒定的。1961年，把碳在自然界含量最丰富的一种同位素，碳12的一个原子的质C量定为12个质量单位，把它作为"基准"，某种元素的所有同位素按丰度的平均值与基准之比，就是这种无素的原子量，即元素周期表列出的原子量。

Similarly, the AMR begin to increase and then decrease with increasing the thickness d of the seed layer, and has a maximum value at a critical thickness d of 5.32nm. Compared to the permalloy films deposited on Ta seed layer ,the AMR enhancement of 10%-46% is observed in the permallay films deposited on (Ni0.82Fe0.18)1-xNbx seed layer.(2) The coercivity Hc1 obtained for magnetic field H applied paralley to the easyaxis is large than Hc2 for H applied perpendicular to the in-plane easy axis, and both of coercivity are consistent with the change of x.

2沿样品易轴方向的矫顽力Hc_1比难轴方向的矫顽力Hc_2大，两者随Nb原子的百分含量x的变化是一致的，饱和磁化强度Ms随x的增大先增大后减小，在x=27.1％处，Hc_1和Hc_2都比较小，而Ms则达到最大；种子层厚度d不能明显改变坡莫合金薄膜的磁性能；与以传统材料Ta为种子层的坡莫合金薄膜相比，以Ni_(0.82Fe_(0.18)_(0.829)Nb_(0.271)为种子层的坡莫合金薄膜的矫顽力只有轻微减小，但是Msg 以w讪Fq.t）lkNk为种于层的坡莫合全薄膜的各向异性戳电阻及磁性能研究却要大，mk坡莫合金层厂度！

The use of benzazepin-N-acetic acid derivatives which contain an oxo group in the a position to the nitrogen atom and are substituted in the 3 position by a 1--cyclopentyl-carbonyl-amino radical, and of their salts and biolabile esters, for the prophylaxis and/or treatment of heart damage caused by cardiotoxic doses of medicaments or chemicals, in larger mammals and in particular humans.

本发明涉及苯并氮杂∴－N－乙酸衍生物及其盐和生物不稳定的酯的应用，其中苯并氮杂∴－N－乙酸衍生物在氮原子的α位置含有氧代基，且在3－位置上被1－－环戊基－羰基－氨基残基取代，用于预防和/或治疗大的哺乳动物和特别是人体的心脏损伤，其中心脏损伤是由心脏中毒剂量的药物或化学品引起的。

By thermodynamically and dynamically calculating and analysing ,a new growth mechanism of spherical graphite has been proposed ,that is,the spherical graphite does not grow inwardly,but grow outwardly and when spherical graphite grow outwardly carbon atoms come into and fill-up the entocoele of spherical graphite by the diffusing way.

通过对石墨球最终表面的形态进行分析，可以获得气泡的表面并不是石墨球的最终表面，石墨球表面主要由于受到石墨球表面各微晶长大速度不均匀性、铁水中的三大起伏、微量元素与碳原子的竟相吸附、由于浓度梯度和温度梯度所引起铁水的对流等各种因素的综合影响结果使其表面成为凹凸起伏的形状

Synthesizing new compounds are always the goal of chemist. Recent ly, the progress of the hydrothermal synthesis method is giving a new method to synthesize new compounds. The hydrothermal synthesis method is prefectly applied to synthesizing the tunnling materials, micro-and meso-porous mat erials as well as some new materials, so this method obtained the intrest of che mist.

中文题名含有杂原子的金属－氧簇(V，Mo，W，P，As)的合成与结构副题名外文题名论文作者李亚丰导师裘式纶教授学科专业无机化学研究领域\研究方向学位级别博士学位授予单位吉林大学学位授予日期2002 论文页码总数70，68页关键词金属－氧簇化学多酸化学无机合成化学馆藏号BSLW /2003 /O611 /3 合成新结构和新组成的化合物一直是化学家们的目标，近代水热合成技术的发展为合成亲新化合物提供了一种新的方法，水热由于在合成具有孔道结构、微介孔材料以及一其它一些新型材料具有其它方法无可比拟的优越性，因此，越来越受到人们的重视。

Our model is obviously superior to Rinker'smodel. because Rinker's model potential is a combination of Thomas-Fermi-Dirac potential and Hartree-Fock-Slater potential for the isolated ion.

我们的模型明显优越于Rinker的模型在于： Rinker的模型采用的是Thomas-Fermi-Dirac势和自由原子的Hartree-Fock-Slater势的迭加形式，而我们的模型中除离子的结构因子外，电子散射势、化学势及电离度等量都是通过自洽迭代方法计算的。

Atomic absorption spectroscopic assessment of subdermal valve implants showed significantly lower contents of calcium, magnesium and phosphate in alternatively treated leaflets.

subdermal汽门的分光镜的评价注入的原子的吸收显示出了钙的意味深长地较低的内容，在另外地被对待了的传单的镁和磷酸盐。

In order to get the information of interaction between metal complex and DNA and select metal complexes which can cleave DNA effectively, twenty seven transition metal complexes containing O/N coordinate atoms have been synthesized in this thesis. We report the synthesis, crystal structure and properties of the complexes. One of the complexes is the first μ〓-oxalato tetranuclear Cu complex, in which there is ferromagnetic interaction between the copper atoms bridged by oxalate ions. Two trinuclear copper complexes containing partial cubane Cu〓O〓 cores have been synthesized and discussed the magnetic properties.

为了解金属配合物与DNA的相互作用及筛选能有效切割DNA的金属配合物，为无机药物合成及应用提供基础信息，本文利用十个含N、O原子的多齿配体设计合成了二十七个未见文献报道的过渡金属配合物，并解析了它们的晶体结构：其中包括首例μ〓-草酸根的四核铜配合物；合成了两个具有μ〓-OH〓三核缺角立方烷结构的Cu配合物；以HCBP衍生物为配体合成了七个过渡金属配合物；以SCN〓、N〓，C〓O〓等为桥联配体，以dmpyen为端基配体合成了十一个配合物。

If nitrogen is present as single atoms, it would hint that the diamonds were produced rapidly and at relatively low temperature - as might happen if the diamonds formed from pockets of graphite in the zircons in a single, rapid event. That would make the diamonds young.

如果氮元素被证实是以单个原子的形式存在，这意味着钻石是在相对低温的环境下快速形成的——对那些由锆石中的石墨矿囊转变成形的钻石来说，如果单一而快速的条件具备，这种情况就很可能会发生，并将证明这些钻石的年代并不久远。

As the temperature of such materials rises to the Curie point, the thermal energy of the atoms becomes sufficient to overcome the coupling energy and the material behaves paramagnetically.

当铁磁性物质温度升至居里点原子的热能足以克服耦合能时，物质就表现为顺磁性。见反磁性的顺磁性的反磁性的和顺磁性的反磁性的顺磁性的。

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。