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With the development of science and technology, sensitive, rapid, reproducible, simple and accurate analytical methods are required for the determination of trace elements in geological, biological and environmental samples. The direct determination of extremely low concentration of trace element with modern atomic spectroscopic method, such as atomic absorption spectrometry is so difficult. On one hand, the limitations are associated not only with the insufficient sensitivity of these techniques but also with matrix interference.

随着科学技术技术的发展，在进行地质、环境、生物等样品中痕量金属元素的测定时，常常要求达到ppb级的水平，虽然火焰原子吸收分光光度法具有很高的灵敏度，但是要直接测定这些样品中的痕量组分却很难，这是因为，一方面，样品本身的物理化学状态有的不适合直接测定，或组分的含量低于分析方法的灵敏度；另一方面是存在基体干扰。

The phase of optical wave can be recovered by the intensity transport equation under the paraxial approximation For the optical system with diffraction limit, it is difficult to get the boundary radical slope of phase and sample in the circular domain boundary when using the intensity transport equation to recover the phase, consequently, we reviewed an algorithm mentioned in the reference ［4］, namely, the equation, computation domain and boundary condition are changed, then the phase is reconstructed by the multigrid method and corrected at last Moreover, the experiment system is set to testify the algorithm, and the recovered phase from the intensity data detected by CCD is compared with the result from phase retrieval algorithm, it is found that the phase reconstruction error can reach 017 λ in the case of non-uniform intensity distribution, as a result, the method is suitable for the phase recovery with low wavefront sensing accuracy.

在傍轴近似条件下，可以利用光强传播方程对畸变波前进行相位恢复。对于衍射受限的光学系统，很难获得相位的边界径向斜率值作为边界条件，此外，要获得精确的圆域边界采样值也并非易事。为了克服上述困难，进一步研究了相位恢复改进方法，即改变了方程的表示形式、计算区域和边界条件，并用多重网格法进行求解获得重构相位，最后再将其修正。为了验证算法的精确性，搭建了实验系统对算法进行实验验证，将由CCD探测的光强分布进行计算得到的相位分布与相位恢复算法的结果进行比较，证明在光强分布非均匀的情况下，该方法恢复的相位均方根误差能够达到017 λ，可以适用于波前传感精度要求不是很高的相位恢复。标签自适应光学相位恢复相位修正光强传播方程 adaptive optics phase retrieval phase correction intensity transport equation

At the same time, some problems were found during separations of 7S and 11S globulin and hydrolysis of soybean. According to the structure of soybean protein, this paper studied the separation methods of 7S and 11S globulin, and a new separating method was put forward: with low-temperature defatted soybean draff as raw material, a technique of alkaline extraction, acidic precipitation and membrane filtering was used.

为了进一步探讨7S和11S两种功能性不同的大豆球蛋白的分离新工艺和方法，以及更好的解决大豆蛋白难酶解的问题，本文从大豆蛋白质原料的结构入手，选择低温脱脂大豆粕为原料，首先研究了7S和11S大豆球蛋白的分离方法，通过几种传统分离方法的比较实验，提出了一种碱提酸沉结合膜分离技术的分离新工艺，SDS—PAGE电泳分析表明碱提酸沉膜分离技术得到的7S和11S大豆球蛋白的相对纯度分别达到75.5％和84.7％，结果均优于传统方法。

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！

If you ever feel mesmerized by the usual stuff you hear about China--20% of the world's population, gazillions of brainy engineers, serried ranks of soldiers, 10% economic growth from now until the crack of doom--remember this: China is still a poor country (GDP per head in 2005 was $1,700, compared with $42,000 in the U.S.) whose leaders face so many problems that it is reasonable to wonder how they ever sleep.

如果你曾被中国的表象————世界20%的人口，巨大的智慧的技术人才团队，大批军队，长期的10%的经济增长率，所迷惑的话，请记住这一点，中国仍然是一个贫穷的国家（2005年人均GDP仅有1700美元，相比之下美国达到了42000美元），大量的问题使人很难相信中国的领导人还有时间睡眠。

Thus, in every American deliberative assembly having no rules for conducting business, the motion to adjourn, when it does not dissolve the assembly, would be decided to be undebatable, as in Congress, the English parliamentary law to the contrary notwithstanding; so if the previous question were negatived, the debate upon the subject would continue, as in Congress, whereas in Parliament the subject would be immediately dismissed; so, too, the previous question could be moved when there was before the assembly a motion either to commit, or to postpone definitely or indefinitely, just as in Congress, notwithstanding that, according to English parliamentary law, the previous question could not be moved under such circumstances.

认真地探究人的智慧本质，他和大多数西方哲人一样，发现人是一种最难被道理说服的动物。当发生分歧的时候，不管分歧的基础是什么，或者出于利益冲突，或者出于信仰理念，或者出于知识经验的不同，反正一旦分歧明确公开，是非常难以在短短几个钟头或几天里靠语言的交流来达到一方说服一方的。分歧的双方找到共同点的可能不是不存在，但是这需要有一定的交流机制，否则，一方说清楚了，另一方根本没听进去，还是白搭。

Different kinds of flocculants have different capabilities. The flocculants produced by Aspergillus parasiticus is not steady for heat. The flocculating effect is best at acid conditions, and it is not acute for Ca〓. The flocculant can decolorize soluble dyestuff, even the active gorgeous red X-3B which is difficult to be decolorized, the decolor rate is 62. 1%. The flocculant produced by A-9 is steady for heat. It can flocculate Gaolin suspension well without synergistic effects of CaCl〓, and the dose is only 0.05ml/L. The obvious character of A-9's medium cultured for 3days is very viscosity, and viscosity is a mark for microorganism producing microbial flocculants.

不同的微生物絮凝剂具有不同的性能，寄生曲霉产生的絮凝剂对热不稳定，在酸性条件下絮凝效果好，对Ca〓不敏感，该絮凝剂对可溶性染料具有良好的脱色性能，即使是最难脱色的活性艳红X-3B，脱色率也达到62.1％。A-9产生的絮凝剂对热稳定，絮凝高岭土悬浮液时用量小，仅为0.05ml/L，且不需添加CaCl〓等助凝剂，明显优于其它微生物絮凝剂。A-9菌株培养3天的培养液的明显特征是粘性高，试验发现培养液的粘性与微生物絮凝剂性能有较好的对应关系，因此培养液的粘性可以作为微生物产生絮凝剂的重要标志。

The establishment of the collective class of digital piano in universities provides a chance for non-major music universities students to learn digital piano playing. Through this art practice, students could percept the aesthetics in music and improve their appreciation abilities for piano music; master the preliminary skills of playing piano and other skills like music reading, solfeggio, sight-reading and reciting; learn to play their enjoyed music which is not so difficult, and accompany at the piano for the singer. So that a comprehensive purpose will be achieved including self-amusement, the temperament in art, the mental adjustment, the rich spiritual life, the aesthetic pleasure, improved life quality and the guarantee of both mental and physical health.

在普通高等学校开设数码钢琴集体课，是为了让非音乐专业的大学生们通过学习弹奏数码钢琴这一艺术实践，来感受音乐的美，从而提高对于钢琴音乐的鉴赏能力；使得大学生们掌握钢琴演奏的初步技能，连带着掌握识谱、视唱、视奏、背奏的技能；学会弹奏自己所喜欢的不太难的钢琴曲，并且能为同伴的歌唱进行简易的伴奏，从而达到自娱自乐、陶冶性情、培养高雅的艺术素质、调剂脑力、丰富精神生活、获得审美愉悦、提高生活质量、保障身心健康的综合目的。

The beginning of times, it will find it difficult to do, which is a combination of man and a woman face to face position, and even up to caress each other's results, men can freely caress the female body, women can be like a dancing pole dancing, as in a man's thigh, back and forth from top to bottom friction, not only increase the degree of flirting charming man did not say he can enjoy the "flowers" is readily stimulated.

刚开始做的时候会觉得难，这是一对男女面对面结合的体位，甚至可以达到互相爱抚的效果，男人可以自在地爱抚女性的身体，女人也可以像跳钢管舞一样，在男人的大腿来回上下摩擦，不仅增加挑逗男人的妩媚度不说，自己也可以享受&花朵&被刺激的爽快。

Will be launched tomorrow spring plate of the total and 23 new projects have been opened to reach 76 in the "new order parade," and this year alone there were 10 projects popular townhouse many; In the whole exhibition situation, 5,000 yuan per square metre fold in the following projects accounted for almost half of all participating projects will undoubtedly provide for different levels of purchase of a rare choice space.

将在明天春展开盘的新开楼盘和二三期开盘项目已经达到76个，在这场&新盘阅兵式&上，仅今年流行的TOWNHOUSE项目就有10个之多；而从整个参展情况来看，每平方米均价在5000元以下的项目几乎占了全部参展项目的一半，无疑为不同层次的购房者提供了难。。。。。。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失