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1.The morphological structure of DJ-9073b extended by the 4th vaccum side-distillate oil ( alkane content is higher and aromatic hydrocarbon content is 67.91% ) was more uniform and compact than that of DJ-9073a extended by the low alkane content oil.
填充油中的烷烃含量是影响形态结构、流变行为和加工性能的主要因素:用烷烃含量较高(芳烃含量为67.91%)的减压四线馏出油填充的 DJ-9073b,其填充油与基础胶的混合形态比烷烃含量低的DJ-9073 a均匀、细密;收藏指正
2.Polyaramide with easily rotational backbone has higher gas permeability, For two polymers with the samebackbone, gas permeability is higher for one with methyl side group on its aromatic ring.
高分子主链的化学结构相同,苯环带有侧甲基的聚合物有高的气体透过系数;收藏指正
3.benzeneethanol,etc. comparing with dry white wine of Chardonnay growing different regions in the world,the higher relative contents and patterns of aromatic compounds were(similar) but characteristic aroma trace components were very different,which lead to a similar and unique aroma and style for the same variety wines.
相对含量较高的香气成分种类相似,而微量特征香气成分差异较为显著,从而构成不同产区同一品种葡萄酒相似和独特香气与风格。收藏指正
4.It was found that contents of benzene insoluble and asphaltene materials in tars from rapid pyrolysis are higher, the lower hydrocarbons in aliphatic subfraction and dimethyl naphthalene in aromatic subfraction are higher as well.
发现快速热解焦油中苯不溶物、沥青烯含量较高; 在焦油的油馏份内脂肪族亚馏份中的低碳烃含量较高,芳烃亚馏份中萘、二甲基萘含量较高收藏指正
5.The biochemical reaction in liquor-making mainly included the degradation of macromolecular substances such as the degradation of amylum and protein, the biochemical changes of micromolecular substances such as glycolysis of glucose (EMP approach) and reconvertion of pyruvic acid, and the formation of flavoring substances such as the production of higher organic alcohol, maillard reaction, and the formation of aromatic compounds.
白酒酿造过程中的生物化学反应主要包括:大分子物质的降解,如淀粉的降解和蛋白质的降解;小分子物质的变化,如葡萄糖的酵解(EMP途径)和丙酮酸的再转化;香味物质的生成,如高级有机醇生成、美拉德反应和芳香族化合物的形成。收藏指正
6.Elementaly analysis, IR, 1~HNMR, WAXD, DMA and SEM were ued to charaCterize the struCture and properties. The results show that ASPU has a much higher level of crystallinity and more powerful solvent--resistance than that of aromatic one.
利用元素分析、IR、~1HNMR,WAXD、DMA、SEM等对样品进行了较为全面的表征,发现ASPU与芳香族聚氨酯最大的不同是其抗溶剂性强,硬段结晶度高,并且硬段的晶胞参数与纯硬段相同。收藏指正
7.The aromatic factors of Liaohe decanted oil are much higher than those of Daqing decanted oil at the same cumulative yield.
在相同累积收率时,辽河油浆窄馏分的芳碳率远大于大庆油浆窄馏分。收藏指正
8.another was existed in the polyene conjugate system with MW 220 amu to 2200 amu in higher polymerization, the ratio of this part was about 47%~19%. With an increase of coal rank, the first part of coal extracts has the trend of being aromatic-structured and the UV spectra of the other part had a shift to the longer wavelengths, which indicted the higher conjugation.
聚合度较大的共轭体系占 19%~ 4 7% ,分子量分布范围为 2 2 0~2 2 0 0amu ,主要由以共轭的多烯为主构成 ,随煤阶的增加 ,共轭程度加大 ,不饱和的含氧基团消失。收藏指正
9.The results showed that aromatic compounds from grape varieties and their wines at different stages had different evolutionsIn grapes, 43, 47 and 51 aromatic compounds were found in Cabernet Sauvignon, Merlot, Cabernet Gernischt respectively. There were 81 kinds of aromatic components in Chardonnay. They belonged to olefinic aldehydes, aldehydes, ketones, higher saturated and unsaturated fatty acids, esters, phenols and other chemical groups.
主要结果如下:检测出红色品种赤霞珠、梅尔诺、蛇龙珠果实挥发性化合物分别是43、47和51种,白色品种霞多丽果实检测出81种,属于烯醛类、醛类、酮类、高级饱和、不饱和脂肪酸类化合物、脂肪酸酯和酚类化合物等。收藏指正
10.Five aromatic 1,4—diketones(3a—3e)were prepared by modifiedmethod using succinyl chloride as acylating reagent. The yield of the 1,4—diketones was much higher than the yield with the literature method.
用丁二酰氯作为酰化试剂合成了五个芳香族1,4—二酮(3a—3e),产率较文献报道的有较大提高.收藏指正
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