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The better reaction conditions are as follows: Reaction temperature is 40°C, Reaction time is 5 hour; the ratio of L - phenylalanine to acetic acid and N - formyl - L- aspartyl anhydrideis 1:10.2:1.1, Its yield is 95.4%.

在查阅文献的基础上，得到较优的α-L-天冬氨酰L-苯丙氨酸甲脂盐酸盐的合成方案，在甲醇一水体系中，N-甲酰-α-L-天冬氨酰-L-苯丙氨酸在浓盐酸的作用下60℃水解90分钟，后冷却到15℃加入浓盐酸在20～30℃保温反应96小时，进行甲脂化，形成甲脂盐酸盐，结晶析出。

The article introduces the biological functions and producation of ornithine in the world, including of breeding of mutant, questing for fermentation condition and industrializating production.

介绍了L-鸟氨酸的生物功能及发酵法生产L-鸟氨酸的过程及研究状况，包括产L-鸟氨酸的菌种，发酵条件的摸索及优化和国外L-鸟氨酸的工业化生产情况。

The protonation constants of formylformic acid thiosemicarbazone (A, H2FFTSC) and glycylglycine and stability constants of binary complexes formed they with Mn, Co, Ni, Cu and Zn and trinary complexes of M-FFTSC-GG at 25±0.1℃ and in the presence of 0.1 mol.L-1 KNO3 were determined. The relation between the stability of binary complexes of M-FFTSC and their disinfectivity and disinfection mechanism were discussed.

在25±0.1℃，I=0.1 mol.L-1 KNO3条件下，应用pH法测定了甲酰基甲酸缩氨基硫脲(A配体，缩写H2FFTSC)，甘氨酰甘氨酸的质子化常数，它们与锰、钴、镍、铜和锌的二元配合物以及过渡金属-甲酰基甲酸缩氨基硫脲-甘氨酰甘氨酸三元配合物稳定常数，讨论了过渡金属席夫碱配合物的杀菌活性与其稳定性之间的关系，对杀菌机理提出了一些看法。

Mixing and dilution heterotactic enthalpies of aqueous n-butanol solutions and aqueous amino acids (glycine, L-alanine, L-proline, L-valine) solutions were determined at 298.15 K by flow microcalorimetric system of 2277 Thermal Activity Monitor. The data were analyzed by using the McMillan-Mayer theory to obtain the enthalpic interaction coefficients.

利用2277热活性检测仪的流动测量系统获得了298.15K时甘氨酸、L-丙氨酸、L-缬氨酸和L-脯氨酸分别与n-丁醇在水溶液中混合过程的焓变以及各自的稀释焓，依据McMillan-Mayer理论关联得到异系焓相互作用系数，讨论了不同氨基酸与n-丁醇分子的作用机理。

Effects on reproductive performance: The normal delivery of group B,C and D were 80%、93.33%、93.33%,respectively,were improved by a certain extent comparing with the control group; The mean birth weight of calves were not significantly different between the trial and control groups.But numerical datas shown that supplementing Zn-Met in dietary had the tendency to increase the birth weight of calves; Supplementing Zn-Met in dietary can make dairy cows express empathema earlier,and significantly(P.05).Among the trial groups,the advanced extent of the group C was comparatively large(5.8d);The oestrous cycles were all in normal range and not significantly different; The levels of serum PRL of group B,C and D were significantly(P.05) 1.46 ng/ml、3.08 ng/ml、3.45 ng/ml higher than the group A.

对繁殖性能的影响：添加蛋氨酸锌组的正常分娩率为80％、93.33％、93.33％，较对照组(73.33％)有一定程度的改善；试验组犊牛初生重与对照组犊牛初生重差异不显著(P＞0.05)，但数据结果显示，日粮添加蛋氨酸锌有使犊牛初生重增加的趋势；日粮添加蛋氨酸锌可使奶牛产后发情提前，且差异显著(P＜0.05)，其中，添加蛋氨酸锌240mg／kg组提前的幅度较大，提前了5.8d；试验组发情周期与对照组差异不显著(P＞0.05)，均在正常范围之内；B、C、D组血清促乳素含量均比对照组高，且差异显著(P＜0.05)，依次增加1.46ng／ml、3.08ng／ml、3.45ng／ml，试验组B与C、D两组间也达到显著差异(P＜0.05)。

The progress in the application of polyaspartic acid and its derivatives in scale inhibition,viscosity reduction,fertilizer synergism and super-absorbing networks were described in this article. polyaspartic acid ; synthesis ; scale inhibition ; viscosity reduction ; fertilizer synergia ; water-absorbing resin

聚天冬氨酸可以改变钙盐的晶体结构，是一种优良的阻垢分散剂，用于循环冷却水系统、锅炉及油气田水处理[1～3]；聚天冬氨酸具有良好的降粘作用[4]；聚天冬氨酸作为肥料增效剂，能促进植物生长[5，6]；它还具有优良的保湿性能，用于日用化妆品和保健用品的制造[7]；由聚天冬氨酸可制备高吸水树脂[8～10]；另外，由聚天冬

In this study,the changes of phenolic compounds ,phenylalanine ammonia-lyase,peroxidase and polyphenol oxidase activities during malting(including steeping,germination and kilning) with three domestic barley varieties were investigated,and the relationships between changes of phenolic content and enzyme activities and malting technics were analysed.

研究了3种典型国产啤酒大麦在麦芽制造过程中酚类物质及其相关酶类(苯丙氨酸解氨酶：phenylalanine ammonia-lyase，PAL、过氧化物酶：peroxidase，POD和多酚氧化酶：polyphenol oxidase，PPO)的变化，分析了制麦过程中酚类物质含量的变化与酶活力和制麦工艺之间的关系，讨论了大麦发芽过程中苯丙氨酸解氨酶在合成酚类物质方面的作用及过氧化物酶对根芽生长和制麦损失的影响。

Phenolic compounds and related enzymes in barley influence its growth and brewing processes.In this study,the changes of phenolic compounds,phenylalanine ammonia-lyase,peroxidase and polyphenol oxidase activities during malting(including steeping,germination and kilning) with three domestic barley varieties were investigated,and the relationships between changes of phenolic content and enzyme activities and malting technics were analysed.The functions of PAL on biosynthesis of phenolic compou...

研究了3种典型国产啤酒大麦在麦芽制造过程中酚类物质及其相关酶类(苯丙氨酸解氨酶：phenylalanine ammonia-lyase，PAL、过氧化物酶：peroxidase，POD和多酚氧化酶：polyphenol oxidase，PPO)的变化，分析了制麦过程中酚类物质含量的变化与酶活力和制麦工艺之间的关系，讨论了大麦发芽过程中苯丙氨酸解氨酶在合成酚类物质方面的作用及过氧化物酶对根芽生长和制麦损失的影响。

In the protein of barley, the contents of Glu, Pro, Phe, Arg are high, and the Limitation amino acids are Met and Trp. The content of Lys in barley is higher than that in wheat, which showed it had a good nutrition quality. The reason for barley protein unforms gluten net tissue was the content less of prolamine and glutein in the protein of barley. The one of main factors for barley showing high biological activity functions might lie in its high β-glucan and polyphenol chemical compound content.

大麦蛋白质中谷氨酸、脯氨酸、苯丙氨酸和精氨酸含量较高，限制性氨基酸为蛋氨酸和色氨酸，赖氨酸的含量高于小麦的，表现出较好的营养品质；大麦蛋白质组分中醇溶蛋白和麦谷蛋白含量较低，是其不能形成面筋网络组织的主要原因；大麦中含有β-葡聚糖和多酚类化合物是其生理活性功能较强的主要因素之一。

Linear free energy relationships exist between the stability of the ternary mixed ligand complex compounds and the base strengths of the a-amino acids and with the stability of the parent binary complex compounds as well.

此处应用的α-氨基酸为L-脯氨酸， D，L-α-氨基异丁酸， L-异亮氨酸， L-缬氨酸，甘氨酸、L-丝氨酸、L-苏氨酸，结果发现，三元混配合物的稳定性与α-氨基酸的碱性强度间以及与原来的二元络合物间存在有线性自由能关系。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。