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The results of density functional calculations indicate that the enol form E1 is the most stable tautomer at the ground state.

研究结果表明,醇式异构体E1为2-(2-巯苯基)苯并噁唑的优势构型;在E1向K转变过程中,存在一个较小的能垒;当考虑零点振动能后,逆向能垒消失。

Chocolate, along with coconut, pecans, and many more, all contain phenyl ethylamine, a chemical that produces the feeling of being in love.

巧克力,还有椰子,山核桃,更多的人,都含有苯基乙胺,一种化学物质,产生的感觉正在恋爱。

The reaction of benzoic acid and ethylenediamine was studied under different conditions.

在不同条件下考察了苯甲酸与乙二胺的反应,对反应产物、主要副产物及反应中间体进行了分离和鉴定,通过熔点测定、元素分析和红外光谱分析,确定了产物为2-苯基咪唑啉,主要副产物为二苯甲酰乙二胺,中间体之一为乙二胺与苯甲酸形成的双盐。

In the first part, one of the side-arms of hexakisbenzene was replaced with a 4-pyridinylethynyl group. Comparing with analogous compounds incorporating a 2- or 3-pyridinylethynyl moiety, the compound with a 4-pyridinyl -ethynyl unit shows lowest melting and clearing points.

中文摘要系列一部分为在六炔苯基苯盘形分子上引入一对位吡啶炔侧臂,在与引入邻位、间位的分子相比较后,发现含对位吡啶炔侧臂的化合物其澄清点温度最低且无热分解问题。

All products are characterized with 1H-NMR. The products are used as PTC in the fluoridation of p-chloronitrobenzene, tetrachloroterephthaloyl chloride and N-benzyltetrachloridephthalimide to detect the performance of the different PTCs.

分别将上述化合物作为相转移催化剂应用于对硝基氯苯、四氯对苯二甲酰氯和N-苯基四氯邻苯二甲酰亚胺等化合物的氟化反应中,以检测各催化剂的催化性能。

The effective factors on the curing characteristics of silicone rubber foam prepared with the technology of removing temporary filler were investigated.

对采用溶析成孔技术发泡的甲基苯基乙烯基硅橡胶胶料的硫化特性影响因素进行了探讨。

Malachite green and gentian violet are both triphenylmethane dye which has been used worldwide as fungicide and ectoparasicide in aquaculture since early 1930s.

孔雀石绿、结晶紫是一类合成的三苯基甲烷类工业染料,自上世纪30年代作为一种体外驱虫剂,杀真菌剂和消毒剂被广泛的用于水产品养殖业。

On average, the more often you see or hear something, the less likely it is to be dangerous. If it were deadly, it would have killed you on the first or second go-round.

你对于购买一种名为1-[3-(6,7-二氢-1-甲基-7-氧代-3-丙基-1H比唑并[4,3-d]嘧啶-5-基)-4-乙氧苯基璜基-4-甲基柠檬酸盐的药物能有多大的热情呢?

This presumable suggested that the distance between phenyl ring fusing heterocycle and sulfonyl group is of importance, a shorter distance may not be beneficial, owing to a steric hindrance.

这反映了杂环并合的苯基与SO_2之间距离对活性的影响,距离过近对抑制作用有不利趋势,可能是位阻影响所致。

Levorotatory and dextrorotatory enantiomers of cetirizine and other nine compounds were synthesized and were identified by MS, IR, 1H-NMR and elemental analysis .

通过化学拆分得到单一手性的4-氯-α-苯基苯甲胺,然后由它出发合成出左西替立嗪和其它九个化合物的单一对映体,并经元素分析、红外、质谱、核磁等鉴定。

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Shop assistant: Please check at the door.

店员:请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后,对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论,结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。

Quick stop! AIDS doctors while the side and say hello and colleagues mention a blood sample box, the Red Cross had sent blankets and so on, with patients有说有笑to go home.

快停车!防艾医生们一边招呼一边和和同事们提着血液采样箱,抱着红十字会送来的被子等,有说有笑地同患者往家走。