烯酮

From the gas chromatography, report the percentages of limonene and carvone in your original sample and in the fractions following distillation.

从气相色层析分析中，回报在你的原样品和通过蒸馏所得的馏份中所含柠檬烯和香芹酮的百分含量。用蒸馏法分离这些组份的效率有多高呢？

Save a small portion (5 drops) of your original essential oil sample and of the distilled limonene and carvone fractions for Gas Chromatography and Refractive Indexes measurements.

留下一小部份(5滴)的原精油样品和蒸馏过的柠檬烯和香芹酮馏份，作为气相色层分析和折光率的测定用。

DAY 1: Distillation and Gas Chromatography: WORK in PAIRS. Split evently the limonene and carvone fractions for the derivatization step.

第一天：蒸馏和气相色层分析：以对为单位工作，一组分一个柠檬烯一组分一个香芹酮馏份作为衍生化步骤

Under ultra high pressure, limonene was converted to α-terpineol and carvone respectively via acid catalysis and oxidation reaction.

超高压处理橙汁使其中柠檬烯在高压下发生水合、氧化反应分别生成α-松油醇和香芹酮。

If the peak absorbances are low, place an additional few drops of the limonene or carvone on the IR card, and re-record the spectrum.

如果峰的吸收度低的话，可以在红外卡上额外加入几滴柠檬烯或香芹酮，然后再记录其谱图。

Water,glycerin,rosa centifolia flower water,butylene glycol,centaurea cyanus flower water,peg-40 hydrogenated castor oil,propylene glycol,ppg-26-buteth-26,phenoxyethanol,methylparaben,sorbic acid,benzophenone-4,pentadecalactone,citrus aurantium dulcisoil,panthenol,menthyl lactate,sodium hydroxide,glycyrrhiza glabraroot extract,aesculus hippocastanumseed extract,citrus aurantium amaraoil,allantoin,limonnene,linalool,blue 1(ci 42090),yellow 5ci 19140

水，甘油，千叶蔷薇花水，丁烯二醇，矢车菊花水，PEG-40氢化蓖麻油，丙二醇，PPG-26-丁醇聚醚-26，苯氧乙醇，对羟基苯甲酸甲酯，山梨酸，二苯甲酮-4，环十五内酯，甜橙油，泛醇，乳酸孟酯，氢氧化钠，甘草根萃取，七叶树籽萃取，苦橙油，尿囊素，柠檬精油，芳樟醇，蓝，黄水：几乎所有护肤品成分第一位都是水。

Results Two compounds were isolated from D. diandra. Theirs structures were identified as 6-carboxymethy1-5,7,4'-trihydroxyflavone and l-O-β-D-glucopyranosyl-(2S,3R,4E,8E)-Z-N-(2'-hydroxypalmitoyl) octadecasphinga-4,8-dienine(soya cerebroside Ⅰ,Ⅱ).

结果分离并鉴定了2个化合物：6-羧甲基-5，7，4'-三羟基黄酮和4，8-N-[2'-D-羟基-十六烷酰基]-1-O-D-吡喃葡萄糖基-4，8-二烯-十八鞘氨醇。

Finasteride has been facilely synthesized from 4-androstene-3, 17-dione by oxidation, ammoniumation, cyanohydrin, dehydration, Ritter reaction, hydrogenation and dehydrogenation.

本文参考有关文献，以雄烯二酮为起始原料，经氧化开环、内酰胺化、氰醇化、Ritter反应引入叔丁基酰胺、氢化还原、最后氧化脱氢制得非那雄胺。

Methods: RP-HPLC method was used to determine the content of diethylstilbestrol and testosterone in chick embryo.

目的：建立了RP-HPLC法测定鸡胚蛋及鸡蛋中己烯雌酚、丙酸睾酮激素残留。

Objective: To determine the content of diethylstilbestrol and testosterone in HY-LINE Variety Brown chick embryo and egg.

目的：建立了RP-HPLC法测定鸡胚蛋及鸡蛋中己烯雌酚、丙酸睾酮激素残留。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。