查询词典 methyl-ethyl ether

With the combination of heat pipe technology and catalytic reactor, a novel-style ophidian loop heat pipe chemical reactor was established, by which an industrial sidetrack experiment with methyl tert-butyl ether synthesis was carried out.

将热管技术与催化反应器结合，构建了蛇形回路热管反应器。

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。

Results showed that the hybrid monomer could photopolymerize effectively and both free radical and cationic polymerization processes were improved. When 2-Hydroxy-2-methyl-1-phenyl-1-propanone (1173) was introduced into hybrid system containing UVI-6976, the final conversion of propenyl ether double bond and polymerization rate increased obviously. The comparison of photopolymerization kinetics between hybrid and blend system was investigated as well.

结果表明，以硫鎓盐为光引发剂时，这三种杂化单体均可以有效进行杂化光聚合反应，丙烯基醚和丙烯酸酯双键都显示出较快的反应速度和较高的最终转化率，同时在简单结构的硫鎓盐（UVI-6976）引发体系中加入自由基引发剂2-羟基-2-甲基-1-苯基-1-丙酮（1173）后，丙烯基醚双键的阳离子聚合速率和最终转化率都有了很大提高。

Results β-Stigmasterol (1), quercetin (2), myricetin 3'-methyl ether (3), syringetin-3-0-α-L-arabinofuranosid (4), ardicrenin (5) and ardisiacrispin A (6) were isolated and identified.

结果 分离并鉴定出6个化合物：β-豆甾醇(1)、槲皮素(2)、3'-甲基杨梅黄酮(3)、丁香亭－3-O-α-L-阿拉伯呋喃糖苷(4)、ardicrenin(5)和ardisiacrispin A(6)。

Results Eleven compounds were purified and their structures were identified, they were identified as β-sitosterol, stigmasterol, nonacosanyl caffeate, daucosterol, betulinic acid, vanillic acid, inositol methyl ether, sucrose, soyasaponin Ⅰ, kaikasaponin Ⅲ, and dehy-drosoyasaponin Ⅰ.

结果 分得11个已知化合物，经鉴定为β-谷甾醇、豆甾醇、咖啡酸二十九醇酯、胡萝卜苷、白桦酸、香草酸、肌醇甲醚、蔗糖、soyasaponin Ⅰ、kaikasaponin Ⅲ和dehy-drosoyasaponin Ⅰ。

Gather a sour buffer liquid of the sugar adoption lemon to carry on taking out to lift to the sweet dew in the beer leaven, separate many sugar from ferment a liquid, is precipitate with cold methyl alcohol, get a white thick lift a thing, use the 铵 salt and boric acid of the quarter again with many sugar the formation match with a thing, adding ether to precipitate, getting white and refined sample, average each 50 gs the wet leaven cell can get such refined sweet dew to gather the sugar 0.6 gs, computing with the this kind method withdraw of produce a rate for 1.2%.

对啤酒酵母内的甘露聚糖采用柠檬酸缓冲液进行抽提，从发酵液中分离多糖，以冷甲醇沉淀，得白色粗提物，再用季铵盐和硼酸与多糖形成配合物，加乙醇沉淀，得到白色精制样品，平均每50g湿酵母细胞可得到这样的精制甘露聚糖0.6g，计算出以此种方法提取的产率为1.2%。

The asymmetric polymerization of methyl methacrylate is carried out using the chiral binaphthyl crown ether macrocyclic compounds binding n-BuLi or t-BuOK as chiral initiator at -78℃.

以手性联萘冠醚为配体，络合n-BuLi，t-BuOK等有机金属化合物形成手性引发剂体系，初步探讨了甲基丙烯酸甲酯单体的聚合反应。

Methods:The target compound was synthesized using 4-hydrazino-N-methyl-benzyl-sulphonamide hydrochloride and 4,4-dimethoxy-N,N-dimethyl butylamine as the starting materials,PPA and sodium dihydrogen phosphate instead as catalysts and isopropyl ether and acetone as solvents for recrylstallization,via 4-step reactions:condensation,rearrangement,cyclization and salt formtion.

以4-肼基-N-甲基-苄基磺酰胺盐酸盐与4，4-二甲氧基-N，N-二甲基-丁胺为起始原料，改用多聚磷酸和磷酸二氢钠作为催化剂，后处理采用异丙醚和丙酮作为重结晶溶剂，经缩合、重排、环合、成盐的4步反应合成琥珀酸舒马曲坦。

RESULTS: Sixteen compounds, ursolic acid (1), indole-3-carboxaldehyde (2), indole-3-carboxylic acid (3), p-coumaric acid (4), azelaic acid (5), N-trans-feruloyl tyramine (6), blumenol A (7), 2-hydroxy-3-methylanthraquinone (8), rubiadin l-methyl ether (9), rubiadin (10), quercetin (11), luteolin (12), chrysoeriol 6-C-β-boivinopyranosyl-7-O-β-glucopyranoside (13), alternanthin (14), stigmasta-5, 22-dien-3β-ol (15), and α-spinasterol (16) were obtained from the EtOAc extract of Alternanthera philoxeroides.

结果：得到并鉴定了16个化合物，分别为乌苏酸(1)、吲哚-3-甲醛(2)、吲哚-3-甲酸(3)、对-香豆酸(4)、壬二酸(5)、N-反式阿魏酰基酪胺(6)、布卢姆醇A(7)、2-羟基-3-甲基蒽醌(8)、甲基异茜草素-1-甲醚(9)、甲基异茜草素(10)、槲皮素(11)、木犀草素(12)、柯伊利素-6-C-β-波伊文糖基-7-O-β-吡喃葡萄糖苷(13)、莲子草素(14)、豆甾醇(15)和α-菠甾醇(16)。

Two asymmetric photochemical reactions were investigated in such medium: photochemical reduction of phenyl cyclohexyl ketone and photoelectrocyclization of tropolone methyl ether.

虽然固相光化学反应的手性诱导取得了可喜的进展，但对底物和诱导剂的要求比较苛刻，使其适用范围非常有限。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。