直链

It is found that there are good relationships between the fundamental frequencies and the structural properties of straight-chain alkanes, and between the sum-frequencies and the additivity properties of straight-chain alkanes as well.

将直链烷烃分子看成是一个多自由度振动系统，用机械振动理论中的传递矩阵法计算了 C2~C32直链烷烃的固有频率，分析了固有频率随化合物结构单元的变化规律。

Linear alkyl benzenes and linear alkyl dimethyl benzenes, prepared by the alkylate reaction of linear alpha olefin with benzene or dimethyl benzene which were sulfonated by chlorosulfonic acid and then neutralized to produce linear alkyl benzene sulfonates and linear alkyl dimethyl benzene sulfonates.

本文以一定链长的直链α-烯烃分别与苯和混合二甲苯为原料制备了直链烷基苯和烷基二甲苯，经氯磺酸磺化，中和可得到具有一定链长的直链烷基苯磺酸盐和直链烷基二甲苯磺酸盐。

There was a negative correlation between isoluble amylose content and the activity of active enzyme but a positive correlation between the insoluble amylose content and the ratio of amyl...

不溶性直链淀粉的含量与普鲁兰酶活力成负相关；不溶性直链淀粉的含量与直链淀粉和支链淀粉的比值成正相关，其中四个样品为显著水平，一个样品接近显著水平。

Analysis of the degradation of corn starch during fermentation by Gel chromatography indicated that amylose and the linear chain part of amyl pectin were the carbon source used by B. macorous WSH02-06 for cell growth and enzymatic production.

使用凝胶色谱的方法对发酵过程中玉米淀粉的降解产物进行分析后可知，在γ-CGT酶生产中，能被细胞所利用的碳源是玉米淀粉中直链淀粉组分和支链淀粉组分的直链部分。

To study the amylose structure, amylose model is builded and optimized.

为了研究直链淀粉的结构，构建并优化了200个单体组成的直链淀粉模型。

Outlier content of amylose of the variety of Guichao 2 and Mingkexian reduce compared with apparent content of amylose; undissolved substance content of DMSO in the varieties of high chalkiness will higher than that of low chalkiness provided the amylose content is equal, but the content of intermediate fraction is reverse.

明科籼和桂朝2号的直链淀粉分离物含量较表观直链淀粉含量减小；高垩白度品种的DMSO不溶物含量高于同等直链淀粉含量的低垩白度品种，其中间成分的含量低于同等直链淀粉含量的低垩白度品种。

A hybrid simply introduced with the ae gene is usually lack of commercial value because its amylose content is only about 50%. It may be effective to improve the amylose content to gather modificatory genes by recurrent selection.

遗传背景对直链淀粉含量的影响主要表现为非加性效应，注重正向修饰基因的积聚，通过轮回选择等手段提高育种群体直链淀粉含量，是高直链淀粉玉米育种的有效途径。

The principle component analysis showed that head rice ratio, amylose content, chalkiness ratio, gelatination consistency and protein content were most quality traits in low amylase content (5-15%), and head rice ratio, amylose content and chalkiness ratio were most quality traits in low amylase content (5-15%). Correlation of amylose content and 8 agronomic traits showed that: if single plant of low amylase was selected, its'agronomic traits would be affected in negative. Tassel time of low amylose content in 3 combinations was early in their tassel time, and it was important time to select it.

通过主成分分析，可以把整精米率、直链淀淀粉含量、垩白米率、胶稠度和蛋白质作为F2代选择低直链淀粉含量(5-15%)单株的主要品质性状，把整精米率、直链淀淀粉含量和垩白米率作为F3代选择低直链淀粉含量(5-15%)单株的主要品质性状，从而提高选择效率。3个组合类型中，选择低直链淀粉含量较低的单株时，其农艺性状会受到负面影响。3个组合类型低直链淀粉含量单株的抽穗日期都是在每个组合的抽穗早期，因此这是选择低直链淀粉含量单株的重点时期。

The range of Mw values of amylose from different types of rice starch is from 3.29×105～2.75×106. There are no significant differences in the molecular weight distribution, Mw and RMS of the amylose leaches out at the temperature between the onset pasting temperature and 90℃.

研究表明，90℃以上高温不利于用浸出法从直链淀粉含量低的大米淀粉中分离直链淀粉，当温度低于90℃而高于糊化温度时，各个温度下均可用浸出法分离出直链淀粉，得到的直链淀粉具有十分相似的分子量分布、重均分子量和分子旋转半径。

Urea adduction, in which i-propanol and water was used as mixed solvent, was introduced to separate α-olefins from coker kerosine distillate 220-320℃.

研究结果表明，采用异丙醇尿素水溶液脱蜡工艺，可从焦化柴油中成功分离得到直链α烯烃和直链烷烃，焦化柴油可作为C〓-C〓直链α烯烃与直链烷烃的一个重要来源。

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。