查询词典 2-butene

Thereinto, the content of eucalyptus oil was the most with 27.20%, the next was Terpinen-4-OL (21.27%), N-methyl-laurotetanine (6.32%), Hepladecanoic acid (4.33%), Phytol (3.53%), Ether linoleic acid (3.45%), 2,6-dimethyl-2,6-octadiene (2.96%) and so on.

其中，含量最高的是桉油(27.20%)，其次是松油烯－4-醇(21.27%)、N甲基山鸡椒痉挛碱(6.32%)、十七烷酸(4.33%)、叶绿醇(3.53%)、乙醚基亚油酸(3.45%)、2，6－二甲基－2，6-辛二烯(2.96%)等。

Autologous cultured epidermis containing a controlled number of melanocytes induced repigmentation of all piebald lesions, with mean percentage repigmentation of 95.45%(2,791.5 cm2 repigmented/2,924.2 cm2 transplanted).

自体培养表皮包含了一组引发所有白斑病灶再色素沉淀的已被掌握数目的黑色素细胞，其再色素沉淀的平均百分比为95.45%(2，791.5 cm2 再色素沉淀面积/2，924.2 cm2 已移植表皮面积)。

It is of great importance to find out the antigenic epitope of TRP-2 as an antigen in pigmental cells, hi order to set up a foundation to investigate the epitope of TRP-2, we studied on the cloning and expression of human TRP -2 code gene.

确定其抗原表位对于深入研究该抗原及临床应用具有极其重要的意义，为了给TRP—2抗原表位确定的研究打下基础，本研究克隆了人TRP—2编码基因并表达了TRP—2蛋白。

The reactions of several phenols and 2, 2, 6, 6-tetramethyl-4-substituted piperidine oxoammonium salt have been studied. It was found that these oxoammonium salts are new facile reagents for phenolic coupling.

应用2，2，6，6-四甲基哌啶氧铵盐实现了酚类的氧化偶联反应：对位取代的酚类底物得到邻位-邻位偶联产物；2，6-二取代的酚类底物得到对位-对位偶联产物；2，4，6-三取代的阻碍酚类底物得到苄位氧化偶联产物。

Pistillate flower: tepals 2-5(-10); pistil composed of 2-5(-7) carpels; ovary inferior, 1-3(-7)-loculed; placentae axile or parietal; styles 2 or 3, free or fused at base, forked once or more; stigma turgid, spirally twisted-tortuous or U-shaped, capitate or reniform, setose-papillose.

雌花 花被片2-5(-10)；由2-5(-7)心皮组成的雌蕊；子房下位，1-3室(-7)；中轴胎座或周壁；花柱2或3，离生或者在基部合生，分叉一次或更多次；柱头膨大，螺旋缠绕扭曲或U形，头状或肾形，具刚毛小乳突。

Ovary superior, 2-4(or 5)-loculed with 2(-5) ovules per locule, placentation axile; style 1, apically 2(-4)-lobed.

子房上位，2-4(或5)室具2(-5)胚珠每室，中轴胎座；花柱1，顶部2(-4)浅裂。

Then the optimal conditions were decided as follows: the ratio of wall-material to core-material should be 8.0 to 2.0, with ployacrylic sodium as dispersing emulsifier, NH4Cl as acid catalyst, and with the time of pouring catalyst being 2 h, the pH value at end point 2.0, the temperature of condensation reaction under control about 70℃, the reaction time 3 h, the stirring speed 1000 r/min.

研究了壁材与芯材的比例、分散乳化剂、催化剂、反应温度和搅拌速度5因素对微胶囊产品的影响，得出最优化的工艺为：壁材与芯材的比例为m：m=8.0：2.0，以聚丙烯酸钠为分散乳化剂，氯化铵为酸性催化剂，加入速度以2 h加完，终点pH值为2.0，缩聚反应温度控制在70℃左右，反应时间为3 h，搅拌速度为1000 r/min。

Polyalcohol,preservative,metal ion and carbohydrate were experimented through single-factor tests,potassium sorbate,Na~+、K~+、Ca~(2+)、sucrose and lactose had great effects on the stability of mannanase M0710.Orthogonal experiments decided the optimal stabilizing agent were potassium sorbate 3%,sodium chloride 2%and sucrose 2%.

对突变酶M0710的稳定剂也做了初步研究，单一因素试验考察了多元醇类化合物、防腐剂、金属离子和糖类化合物等对目的酶稳定性的影响，其中山梨酸钾、Na~+、K~+、Ca~(2+)、蔗糖、乳糖对酶的稳定性有明显效果，通过正交试验最后确定效果最佳的液态酶M0710的稳定剂为山梨酸钟3%、氯化钠2%和蔗糖2%。

Objective: To analyze the expression of cyclooxygenase-2(COX-2) in patients with familial adenomatous polyposis and to discuss the possible role of COX-2 in adenoma formation and cancerization.

目的：分析环氧化酶2(COX-2)在家族性腺瘤性息肉病中的表达，探讨COX-2在腺瘤形成以及癌变过程中的可能作用。

This complex reaction was phenolic electronic substitution reaction, so reaction rate was related with the positive electricity of pro-electronic reagent, as well as the form of aromatic hydrocarbons. Rates of chlorination of phenol and 2-monochlorophenol were faster in alkaline water than that in weak acid water, so 2,4-dichlorophenol and 2,4,6-trichlorophenol formation concentrations increased with the reaction time.

该复合反应属于酚类电子取代反应，反应速率与亲电子试剂的阳电性以及芳香烃的形式有关，碱性水环境中氯取代苯酚和2-一氯酚的速率要快于在弱酸性水环境；随着pH的升高，2，4-DCP和2，4，6-TCP的生成浓度也不断增加。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。