查询词典 aromatic compound

Since aromatic ring is a very stable compound, it would needs very high activation energy to begin the ring opening reaction. It is therefore interesting to investigate how the micro-organism can catalyze this reaction in room temperature at natural buffer condition.

由於芳香环是一种非常稳定的化学结构，如果想要进行开环反应必要要经过极大的活化能，而了解生物体中是如何在常温的环境下进行这样的反应将会是非常有趣的题材。

The effect of liquid isoprene rubber on properties of NR/BR compound,physical properties and thermal air aging property of its vulcanizate was investigated and compared to that of aromatic oil.

以液体聚异戊二烯橡胶为反应型增塑剂，研究LIR对NR/BR混炼胶性能、硫化胶物理性能和耐热空气老化性能的影响，并与添加芳烃油的NR/BR并用胶进行对比。

The conclusion shows that Anthracene is the main compound in the extracts from water solution of YM coal oxidation. The contents of Hexadecanoic acid、Anthrone and 9,10-Anthracenedione are comparatively high. Aromatic and nitrogenous heterocyclic compounds were also detected, which shouldn't be neglected.

结果表明：在所得水溶液的苯可溶物中检测出绝对高含量的蒽；含量较高的棕榈酸、蒽酮和蒽醌；另外还有一些微量的芳环、杂环类化合物和一系列的长链烷烃。

Five types of compounds were synthesized via modification of the leading compounds, Mannich bases of cyclopentanones. Among the target compounds, one type was aromatic amine derivatives of a leading compound, three were Mannich bases of a - benzylidene cyclopentanone, the fifth was a Mannich base of a - benzyl cyclopentanone.

以具有抗炎活性的环戊酮Mannich碱为先导化合物进行结构改造，设计合成了一类已知化合物的芳胺Mannich碱衍生物，三类α-苯亚甲基环戊酮Mannich碱类化合物，一类α-苄基环戊酮Mannich碱类化合物。22个目标化合物的结构经核磁共振氢谱、红外光谱和质谱检测确证。

Any of various aromatic southwest Asian or Mediterranean plants of the genus Ruta, especially the ornamental R. graveolens, having bipinnately compound leaves that yield an acrid, volatile oil formerly used in medicine.

芸香：一种生长于亚洲西南部或地中海沿岸的芸香属植物，尤指装饰用的臭芸香，具有羽状复叶，能生产一种旧时作药用的刺激性的挥发油

It is a natural chiral compound with three chiral carbon atoms and a reactive carbo- xyl group. Like some natural drugs, it has a aromatic diterpene structure with three rings.

它是含有三个手性碳原子的天然手性化合物，有一个反应性官能团——羧基，具有许多天然药物都具有的芳香型三环二萜结构。

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。

Chapter 3 The imine salt is formed initially by the addition of an organolithium compound to the aromatic nitrile. This type of reaction usually leads to cyclic products.such as triazines.

第三章研究发现有机锂化合物LiCH_2[SiMe(NMe_2)_2]与芳香腈(如苯腈、邻甲基苯腈、间甲基苯腈)反应，可以得到2，4，6-三取代均三嗪，这是一种该类均三嗪的简单有机合成方法。

Through constant research with unique vegetal compound essential oil, according to the demands of different skins, Ostara has promoted natural vegetal essential oil products of different professional treatment procedures and home aromatic SPA.

随着多年的努力研究和以其独家配方的多种植物复方精油，因应不同肤质的需要，Ostara推出不同专业疗程及居家芳香SPA的天然植物精油系列产品，无论您的要求多高，在Ostara的世界里，定能找到您的肌肤所需。

Chinese herb with palmately compound leaves and small greenish flowers and forked aromatic roots believed to have medicinal powers.

中国的一种草本植物，小叶，花小，淡绿色，伞状花序，结成鲜红的浆果。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。