甲胺

In rabbit plasma, there were two kinds of SSAO, which could catalyze the oxidative deamination of methylamine into formaldehyde, had significantly different kinetic parameters.

兔血浆含有两种SSAO酶，均可以催化甲胺氧化脱氨生成甲醛；组分A、B动力学特征有所不同。关键词氨基脲敏感型胺氧化酶；甲胺；酶动力学

Dialkylmethylamine was produced through the reaction of fatty alcohol with methylamine as one of the products of dimethylamine disproportionation.

通过对月桂醇和二甲胺进行胺化反应过程中气相成份的分析，证实了在脂肪醇和二甲胺胺化反应体系中存在二甲胺歧化为甲胺和三甲胺的反应，二甲胺歧化反应生成的甲胺和脂肪醇进行反应是副产物双长链烷基甲基叔胺生成的主要原因。

Five Butenafine's analogues were designed and synthesized according to the structure-activity relationship and operating mechanism of benzylamine antimycotics.

根据苄胺类抗真菌化合物的构效关系、作用机理，设计合成了 5个布替萘芬类似物，N (2 氯 5 吡啶甲基) N 甲基 1 萘甲胺，N ，N 二(4 叔丁基苄基) 1 萘甲胺，N (4 叔丁基苄基) N (2 氯 5 吡啶甲基) 1 萘甲胺，N ，N 二苄基 4 叔丁基苯甲胺，N (2 氯 5 吡啶甲基) N 苄基 4 叔丁基苯甲胺。

The key intermediate 3-methylaminopiperidine was synthesized from 3-methylaminopyridine by two methods,formylation and lithium aluminium hydride reduction or condensation with triethyl orthoformate and sodium borohydride reduction,and then hydr...

以3-氨基吡啶为原料，分别通过甲酰化反应、氢化铝锂还原和原甲酸三乙酯缩合、硼氢化钠还原两种方法得到3-甲胺基吡啶，最后经催化氢化得到中间体3-甲胺基哌啶。

The key intermediate 3- methylaminopiperidine was synthesized from 3-methylaminopyridine by two methods, formylation and lithium aluminium hydride reduction or condensation with triethyl orthoformate and sodium borohydride reduction, and then hydrolysis.

以3-氨基吡啶为原料，分别通过甲酰化反应、氢化铝锂还原和原甲酸三乙酯缩合、硼氢化钠还原两种方法得到3-甲胺基吡啶，最后经催化氢化得到中间体3-甲胺基哌啶。

The company mainly produces: ammonia, dimethylformamide, formamide, N-dimethylformamide, mixed methylamine, isopropylamine.

公司主要生产：合成氨，二甲基甲酰胺，甲酰胺，N-甲基甲酰胺，混甲胺，异丙胺。

Methamidophos affected the mean ratio of ovigerous to non-ovigerous females and the mean mictic rate significantly but had less effect on the total resting egg production, while 17β-estradiol was in adverse.

甲胺磷和17β-雌二醇对实验期间轮虫的平均种群增长率均有显著影响，但对轮虫种群中的混交雌体受精率的平均值无显著影响；甲胺磷对实验期间轮虫种群中的携卵雌体数／非携卵雌体数和混交雌体百分率的平均值均有显著影响，而17β-雌二醇则无显著影响；甲胺磷对实验期间轮虫的休眠卵总产量无显著影响，而17β-雌二醇的影响较显著。

The intermediate which obtained from oximation of 7a-e reacted withmethyl N-(2-bromomethylphenyl)-N-methoxycarbamate to synthesize oxime ether methyl carbamate 3a-e.

以邻位卤代苯甲醛和3-丁烯-2-醇为原料通过钯催化&一锅法&反应合成了2-乙酰基茚7a-e，7a-e 肟化之后和N-(2-溴甲基苯基)-N-甲氧基氨基甲酸甲酯反应合成了肟醚类氨基甲酸甲酯3a-e，进一步胺解之后得到了肟醚类氨基甲酰甲胺3f-j。

In this paper, the improvement of synthetic method of 2-acetylaminotropone is introduced. 3-Acetyltropolone reacted with low concen-tration methylamine solution and solvent was directly evaporated in reduce pres-sure to give 2-acetyl-7 -methylaminotropone in good yield. The compound reacted with phenyltrimethylammonium tribromide to give two new compounds.

本文介绍2-乙酰基-7-甲胺基酮合成方法的改进——用挥发性小的低浓度甲胺溶液与3-乙酰基酚酮反应；和采用直接减压蒸除溶剂法分离产品，得到较好产率的2-乙酰基-7-甲胺基酮；用化合物与三溴化苯基三甲铵反应，得到两种至今未见文献报道的新化合物。

The results show that 60Co-γ ray radiation has the most remarkable effect on the degradation of organophosphorus pesticides such as fenitrothion, parathion, methyl-parathion, phorate and chlorpyrifos and the maximum degradation rates are over 85%. The degradation rates of methamidophos, acephate, malathion ,dimethoate are slightly inferior to them and the optimum degradation rates is just only 34.70%. At the same time, the contents of soluble total sugars, glucose, fructose, sucrose and total sugars in apple juice decrease unconspicuously, but the total acid content in apple juice and its color value and clarity increase. Based on a comprehensive consideration of the 60Co-γ radiation effect on the actual degradation of organophosphorus pesticides in apple juice and its main chemical and physical indexes, organophosphorous pesticides residue will be decreased to a lower level with radiation dose of about 5 kGy but the main chemical and physical indexes of export apple juice can not be affected.

结果表明： 60Co-γ射线辐照处理对苹果汁中杀螟硫磷、对硫磷、甲基对硫磷、甲拌磷、毒死蜱降解效果最为显著，最高降解率均在85%以上；对苹果汁中甲胺磷、乙酰甲胺磷、马拉硫磷和乐果的降解效果不显著，最高降解率仅为35%；在0～9 kGy辐照剂量范围内降解苹果汁中有机磷农药的同时，会使苹果汁中的可溶性固形物、葡萄糖、果糖、蔗糖及总糖含量轻微降低，苹果汁的总酸度有所增加，苹果汁的色值及透光率提高；综合分析60Co-γ射线辐照对苹果汁中有机磷农药的实际降解效果及对苹果汁主要理化指标的影响，选用5 kGy的辐照剂量已完全使苹果汁中的有机磷农药残留降低到一个很低的水平，又不会对苹果汁出口主要理化指标造成影响。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。