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A novel Pd／C catalyst with high activity,high selectivity and good stability developed by our group was used for the hydrogenation of N-（3-nitro-4-methoxyphenyl）acetamide into N-（3-amino-4-methoxyphenyl）acetamide in methanol and water,respectively.

笔者开发了一种高效的Pd／C催化剂，分别选用甲醇和水作为反应溶剂，实现了高活性、高选择性和高稳定性地催化加氢制备N-（3-氨基-4-甲氧基苯基）乙酰胺。

Linear regression analysis showed that the product of Freundlich adsorption constants, Kf(1/n), had a positive correlation with 1/Sw and/Sw, showing that the adsorption of acetanilide herbicides on soil was mainly controlled by the content of soil organic matter and the solubility of herbicides.

四种酰胺类除草剂的 Freundlich 吸附常数 Kf(1/n)与1/Sw 、/Sw 有很好的线性相关性，这说明它们在土壤中的吸附主要受土壤有机质含量控制；分子中酰胺 N 的醚取代基的结构差异造成的溶解度差别，是导致不同酰胺类除草剂在土壤上吸附差别的主要原因。

This paper proposes that weak acid is a coordination compound that regards hydrogen ion as "coordination body" and regards acid radical as central atom.

本文首次提出将弱酸看成是以氢离子为"配体"，以弱酸的酸根为中心"原子"所形成的"配合物"，通过计算该"配合物"的生成函数N并绘制PH－N图，用Bjerrum，N。

In additive prime number theory,a classical result of Hua states that,every suffi-ciently large odd number N can be represented as 〓,where 〓 is aninteger and 〓 are primes,which can be regarded as an extension of Goldbach-Vinogradov Theorem.

堆垒素数论中一个经典的结果是华罗庚教授证明的：任一个充分大的奇数N都可以表为N=〓+〓+〓，其中λ是一正整数，p1，p2，p3是素数，这一结果可以看作著名的Goldbach-Vinogradov定理的推广。

Rn (n ≥2) is a bounded smooth domain.

其中ΩR~n(n≥2)是有界光滑区域。

Methods From January 2000 to January 2007, 90 cases of unilateral Pes anserinus bursitis were treated with debridement under arthroscopy (group A, n=30), local block therapy (group B, n=30) and open operation group C, n=30

2000 年1 月－ 2007 年1 月，对90 例单膝发病的鹅足滑囊炎患者，分别采用关节镜下清理术、局部封闭及开放手术治疗，每组30 例。

Methods Medullary slices of newborn Sprague-Dawley rats were prepared for the experiment. The electrophysiological experiment comprised 5 groups (each with 8 slices), each of which were perfused with artificial cerebrospinal fluid, CO, 1H-[1, 2, 4] oxadiazolo [4, 3-a] quinoxalin-1-one (a specific inhibitor of sGC, ODQ group), ODQ+CO (ODQ+CO group), and dimethyl sulfoxide, respectively. The burst frequency of hypoglossal rootlets was recorded as an index of rhythmic respiratory activity. Radioimmunoassay was employed to determine cGMP levels of the medullary slices of the ACSF control group, exogenous CO group, ODQ group and ODQ+CO group (n=6/group).

电生理实验分为5组（每组n=8：单纯人工脑脊液对照组、外源性CO组、ODQ组、ODQ+CO组和二甲基亚砜组，制备SD大鼠离体延髓脑片标本，以舌下神经根节律性自发放电频率(bust frequency， BF)为指标，分别灌流以上药物，观察呼吸节律的变化，并以放射免疫方法检测单纯ACSF对照组、外源性CO组、ODQ组和ODQ+CO组给药后脑片cGMP水平的改变（每组n=6）。

The experiment results indicate that higher phase splitting speed and extraction factor can be achieved when low-carbon alcohols such as n-butanol are used as organic solvents; by using five different N-carbobenzyloxy-L-amino acids as chiral ligands that are formated with Cu(superscript 2+) or Ni(superscript 2+), it is found that as a ligand, Z-Phe has a low extraction factor, while Z-Hyp, Z-Pro, Z-Glu, Z-Val have higher extraction factors, and among these, Z-Val has the highest distribution coefficient; pH value of extractant, when near to the PI of phenylalanine, helps to improve extraction resolution effect; temperature has no obvious effect on the resolution result.

结果表明：以低碳醇类正丁醇作有机稀释剂，所用5种N-苄氧羰基氨基酸（分别为Z-Phe、Z-Hyp、Z-Pro、Z-Glu、Z-Val）与Cu(上标 2+)或Ni(上标 2+)形成手性配位体后，以Z-Val作手性配体，萃取相pH值接近苯丙氨酸等电点时，萃取拆分效果最佳。

We shall do this here in the form of a dialogue between N and HH, where N is a believer in Newton's corpuscular theory, and H in Huygen's theory.

我们试采用谈话的方式，谈话的一方是牛顿学说的信奉者，简称为&N&；另一方是惠更斯学说的信奉者，简称为&H&。

In summary, we obtained three mimotopes recognized by a MAb against PRRSV N protein, and mapped a linear B cell epitope located at aa 79-87 of N protein.

通过与GenBank中41株美洲型分离株的N蛋白的序列进行比较，发现Ep703的序列在美洲型毒株中高度保守。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。