查询词典 n.F.

The direct incorporation of U-13C glucose was estimated by the intensity increase of m/z to F(F was parent fragment, and n was the carbon number in the fragment), while the total isotope incorporation from the added 13C could be calculated according to the abundance ratio increment summation from m/z (Fa+1) through (Fa was the fragment containing all original skeleton carbons, and T was the carbon number in the amino acid molecule). The 13C enrichment in the target compound was expressed as atom percentage excess, and that of D-amino acid needed to be corrected by the coefficient of hydrolysis-induced racemization. The 13C enrichment reflected the carbon turnover velocity of individual amino acid enantiomers, and was powerful to investigate the dynamics of soil amino acids.

外加葡萄糖直接合成氨基酸的比例可利用质谱碎片的相对强度变化来评价（n为质谱碎片F中含有的碳原子数目）；而源于葡萄糖的13C同位素在氨基酸分子中的富集程度是所有同位素峰相对强度变化的总和。13C在目标化合物中的富集比例用原子百分超评价，D氨－基酸的APE还需进一步利用水解诱导的外消旋化系数校正。13C在目标化合物中的富集程度可反映各氨基酸手性异构体的碳循环速率大小，是研究土壤氨基酸动态变化的有力工具。

Let V be an n-dimensional vector space over an algebraically closed field F of characteristic 0, where n = 2m.

设V是特征为0的代数闭域F上的n维向量空间，n=2m。

Rules for fusing, which specify the possible values of the charge that can be obtained when two particles of known charge are combinedbtogether, used for reading out information. In the #nu=5/2# FQH state, it can be realized by measuring whether each pair annihilates fully or not with interference experiment. The representation of the braid group realized by n anyons is cmpletely characterized by the R-matrix and F-matrix which satisfy a pentagon equation and a hexagon equation, coherence conditions for the corresponding anyon model.

满足一定的聚合规则，用于信息读取（在填充因子为5/2的分数量子霍尔效应中，可以通过干涉实验测量每对相邻的粒子相聚合的湮灭情况来实现信息读取）；N个任意子组成的体系的标准基中辫子群表示可以完全由R矩阵和F矩阵决定，不同任意子模型中的R矩阵和F矩阵的具体形式可以通过五边形和六边形方程求出。

It is also pointed out that an n-mode boson coupled quadratic Hamiltonian can be diagonalized by a "negative unitary" matrix which is an element of complex symplectic group SP(2n,c),and an n-mode fermion coupled quadratic Hamiltonian can be diagonalized by a unitary matrix which is an element of complex fermion group F(2n,c).

并且指出，对于n模玻色子耦合二次型哈密顿量，通过一个负幺正矩阵它是复辛群SP(2n，c的元素可以把它对角化；对n模费米子耦合二次型哈密顿量，通过一个幺正矩阵它是复费米群F(2n，c的元素可以把它对角化。

Structures and Vibrational Frequencies of Gas Phase and Solvated Uranyl Complexes UO2Lsuperscript 2-n(superscript *a subscript nL=F(superscript -, CO(superscript 2- subscript 3), NO(superscript - subscript 3); n=0-6, a=1, 2

篇名 气相和水溶液中铀酰配合物UO2L上标 2-n(上标*a 下标 nL=F(上标-， CO(上标 2-下标3)， NO(上标-下标3)； n=0-6， a=1， 2的结构和振动光谱

The results showed that the TiN andN films are polycrystalline phase. The properties and structure of TiN films are mainly determined by the N2 mass flow rate, and as the N2 mass flow rate increases, the structure of the TiN films transforms to f.c.c. type leading to better the properties of films. The presence of negative bias voltage can optimize the grain of TiN films, lower the defect proportion and denser the films, which improves the hardness of films. The TiN films conform to the free carrier absorption mechanism and there are many of free electrons with lower N content in TiN films. With the increase of N content, the quantity of free electrons and reflectivity of films decrease, and the plasma frequence shifts to the lower energy, which leads to the regular change of colors of films from silver, yellowy, golden to yellow-red, meanwhile the lightness of films decreases. The goldenN film consists of TiN and ZrN phase, but belongs to a sigle f.c.c. structure with (111) preferred orientation. The Zr-doping dosen't change the position of the valance band, conduction band and forbidden band ofN film, but leads to the presence of new energy levels, which is the reason thatN film remains golden. The transparent hard films with good corrosion resistance and high hardness have been prepared and the further reseachs showed that the grain size of those films is by far smaller than the wave length and the width of forbidden band of those films is very broad, is the reasons that those films are transparent.

研究表明：氮化钛和N 薄膜为多晶态，氮流量决定了氮化钛薄膜的结构和性能，增加氮流量能使氮化钛薄膜的结构向面心立方结构转变，从而得到性能良好的氮化钛薄膜；施加负偏压能优化氮化钛晶粒和减少薄膜中的缺陷，使膜层变得更致密，从而提高薄膜硬度；氮化钛主要遵循自由载流子光吸收，氮含量较少时薄膜中的自由电子数目较多，随着氮含量的增加，薄膜中的自由电子数目不断减少，反射率逐渐降低，等离子体频率向低能端移动，从而使薄膜颜色出现规律变化，由金属色银白色到淡黄、金黄再到红黄，并且薄膜亮度呈下降趋势；金黄色的N 薄膜中存在TiN 和ZrN 的分离相，但其为单一的面心立方结构并具有(111)面择优取向；相对于TiN 薄膜，Zr 掺杂后，并没有使薄膜的导带、价带和禁带发生变化，只是在TiN 禁带内增加了新能级，这也正是掺杂Zr 后，薄膜仍

Two new complexes, [Mn22(H2bta)2(H2O)]n (1) and [Cu2(H2bta)0.5(H2O)]n (2)(H4bta＝1,2,4,5-benzene- tetracarboxylic acid, L＝imidazo[4,5-f][1,10]phenathroline) were prepared under hydrothermal conditions and their structures determined by single-crystal X-ray diffration.

在水热条件下合成了两个新的配合物，[Mn22(H2bta)2(H2O)]n和[Cu2(H2bta)0.5(H2O)]n，其中(H4bta=1，2，4，5-benzenetetracarboxylic acid， L= imidazo[4，5-f][1，10]phenathroline )，通过单晶X射线衍射仪对其结构进行了测定。

Four phenanthroline derivatives of 2-phenyl-imazole [5,6-f]-(1,10) phenanthroline, 2-(4-hydroxy-phenyl)-imazole [5,6-f]-(1,10) phenanthroline, 2-(4-methoxyl-phenyl)-imazole [5,6-f]-(1,10) phenanthroline and 2-(4-formacyl-phenyl)-imazole [5,6-f]-(1,10) phenanthroline were synthesized, and twelve new complexes of europium were then synthesized with these phenanthroline derivatives as the first ligand and butyric acid, n-heptanoic acid and tetradecanoic acid as the second ligand.

合成2-苯基咪唑并[5，6-f]邻菲咯啉，2-（4-苯酚）咪唑并[5，6-f]邻菲咯啉，2-（4-甲氧基苯基）咪唑并[5，6-f]邻菲咯啉和2-（4-甲酰基苯基）咪唑并[5，6-f]邻菲咯啉等4种邻菲咯啉衍生物，并分别以其为第一配体，选择丁酸，正庚酸和十四酸为第二配体合成12种新的铕－邻菲咯啉衍生物－脂肪酸荧光配合物。

By use of the first principles theory,the segregation energies of light impurities P、N on the ∑3(111) grain boundary and the(111) surface of body-centered cubic Fe were computed, and the brittleductile mechanisms of P、N were discussed energetically.

利用第一原理理论计算了轻杂质P、N在体心F e∑3[110](111)晶界和F e(111)表面的偏聚能，从能量方面对P、N的韧脆机制进行了探讨。

Vibrationally excited molecular nitrogen N*2 plays an important role in the F region ionosphere by increasing the loss rate of the dominant ion O+, thereby reducing the electron concentration in the F region of the ionosphere.

激发态氮分子N*2在电离层F区中起着重要的作用，它使F区占主导地位的O+离子的损失率增大，从而使该区的电子浓度减少。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。