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FT-IR and 1H-NMR results show that the reaction occurs in the α-H atom of isobutyraldehyde.

FT-IR及1H-NMR结果说明合成反应发生在异丁醛中的α氢原子上。

Calculation showed t hat corrosion inhibition increased with the decrease of negative net charge of N atom; Efficiency of inhibition increased with the increase of negative net char ge of pyridine ring in isoquinoline molucular.

计算表明：随着N原子负的净电荷的减小，缓蚀效率提高；随着异喹啉等分子的吡啶环负净电荷的增大，缓蚀效率增高。

Furthermore, single-point energy calculations were refined at the QCISD level of theory with the same basis set (6-311++G**). As a result, the singlet reaction of silylene with isothiocyanic acid contain S-atom abstraction channel, N—H inserted channel, and NH abstraction channel, respectively.

又用QCISD/6-311＋＋G**//B3LYP/6-311＋＋G**方法计算了各个驻点的单点能，计算结果表明单重态的硅烯与异硫氰酸的反应有抽提硫、插入、抽提亚氨基的路径。

Fast atom bombardment mass spectrometry has been used to analyze the complex triglycerides in oils and fats of juglans mandshurica maxin.

本文利用快原子轰击质谱直接测定山核桃油中未经任何前处理的混合甘油三酸酯，能获得其分子量和碎片结构信息，在GC和GC/MS分析的基础上。

The rest positions of 〓 unit are occupied by water and an oxygen atom of carboxylates from another type of ligand. With two carboxylates of this type of ligand, two ladderlike long chains are connected to form one-dimensional ladderlike chain structure.

第二类配体中每个羧酸根的一个氧原子与水分子饱和四面体结构单元余下的位置，并连接两个梯形长链形成一维梯形链状聚合物。

The dependence of the relative intensity of cationic molecule and fragmentation ion of an acetylated melezitose on the concentration of Na + or Li + in the matrix was studied by using fast atom bombardment source .

利用快原子轰击源研究了乙酰化松三糖的阳离子化分子和碎片离子的相对强度随底物中Na＋或Li＋浓度变化的趋势。

Provided herein is a compound having the formula I R2 is typically a tertiary nitrogen atom, being either alkyl-substituted or member of q heterocyclic ring R7 is typically a monocyclic or bicyclic aromatic ring or a heterocyclic ring wherein said compounds are useful for the treatment of psychiatric disorders including but not limited to depression, generalized anxiety, eating disorders, dementia, panic disorder, and sleep disorders.

本发明提供具有式的化合物(R 2 通常为叔氮原子，其或者为烷基取代或为杂环的成员；R 7 通常为单环或双环芳环或杂环)，其中所述化合物用于治疗精神病学的疾病，其包括抑郁症、泛化性焦虑症、饮食障碍、痴呆症、恐慌病和睡眠障碍。

Five of their single crystals were obtained and their structures were determined by X-ray diffraction. By comparison, it was found that dithiocabamate complexes often formed an exactly planar MS4 unit, such as [Mo(R2dtc)2]; and also formed a special MS 5 unit, such as [Cu2(R2dtc)4], the copper atom lies in a distorted square-pyramidal environment.Four kinds of heteropoly acids were prepared and characterized; a series of solid superacid catalyst of supported heteropoly acid were prepared and characterized; regioselectivites of chlorobenzene mononitration with nitric acid with different heteropoly acid on different supports and reaction conditions have been investigated.

培养并解析了5个该类配合物的单晶结构，通过比较，发现二硫代氨基甲酸盐与过渡金属容易形成四配位结构，金属原子与4个硫原子共平面，比如二乙基二硫代氨基甲酸钼；也能形成比较特殊的五配位结构，比如二乙基二硫代氨基甲酸双核铜，Cu原子与5个S原子相连，处于一个变形的四方锥结构的配位环境。

The lattice constants and unit-cell volume increase monotonically with increasing of Mn concentration, it is because that Mn atom radius is larger than that of Fe.

这可归结为Mn原子半径比Fe的大，但不同晶格常数变化的大小不一样，可能与Mn原子的占位有关。

The entangled properties of motorial atom and field in the two-photon Jaynes-Cummings model with atomic motion are studied by using the quantum information theory.

用量子信息理论研究具有原子运动的双光子Jaynes-Cummings模型中运动原子与光场的纠缠特性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。