直链

The grain length, width and 100-grain weight of parents and 110 lines in waterland cultivation of were greater than that in dryland cultivation, and amylose content and chalkiness rate were less than that in dryland cultivation. The comparative study on RVA showed that the greater effect of water stress was observed on the cold plastic viscosity, consumers base value, the restoring value of RVA spectral characteristics and litter on gelatinization temperature, the peak time, the highest viscosity, hot plasma viscosity, disintegrating value.

在旱地种植亲本和各品系的粒长、粒宽和百粒重的均值均小于水田种植，而直链淀粉含量和垩白率均大于水田种植；稻米淀粉黏滞性特征谱中冷胶黏度、消碱值、回复值受土壤水分胁迫影响较大，土壤水分对糊化温度、峰值时间、最高黏度、热浆黏度、崩解值影响较小。

If the straight-chain alkoxy group is too long, it's crystalline enhances, therefore thepolymer's solubility declines.

取代基长度进一步增加时，直链烷基自身的结晶性提高而柔顺性下降，聚合物可溶性反而有所降低。

The invention provides a method for homopolymerizing conjugated dialkene or co-polymerizing conjugated dialkene and monovinyl aromatic hydrocarbon. The method comprises the following steps: the conjugated dialkene is homopolymerized or the conjugated dialkene and the monvinyl aromatic hydrocarbon are co-polymerized randomly. The method is characterized in that at least one alkali metal alkoxide compound expressed by the formula is used as a structure regulator; in the formula, R is linear chain or branched chain alkylidene radical having 1 to 10 carbon atoms; M is alkali metal selected from Li, Na, K, Rb and Cs.

本发明提供了一种使共轭二烯烃均聚或者使共轭二烯烃与单乙烯基芳烃共聚的方法，包括在阴离子聚合条件下使共轭二烯烃进行均聚或者使共轭二烯烃与单乙烯基芳烃进行无规共聚，其特征在于采用至少一种式所示的碱金属醇盐化合物作为结构调节剂，其中R为具有1-10碳原子的直链或支链亚烷基；以及M为选自Li、Na、K、Rb和Cs的碱金属。

The invention concerns a process for preparing heterocyclic carbenes of general formula in which R1, R2, R3 and R4 are identical or different and mean saturated or unsaturated, straight-chain, branched or cyclic, unsubstituted or substituted C1-C10 alkyl, C2-C5 alkylidene, C2-C5 alkylidine, C7-C19 aralkyl or C6-C14 alkyl groups, R3 and R4 can also stand for hydrogen or form jointly anellated, substituted or unsubstituted groups with between 3 and 7 carbon atoms and X stands for carbon or nitrogen, R3 being dropped if X is nitrogen.

本发明涉及一种制备通式Ⅰ的杂环碳烯的方法，其中在通式Ⅰ中，R1、R2、R3和R4是相同的或不同的，并且是饱和的或不饱和的，直链、支链或环状的，未取代或取代的C1－C10－烷基、C2－C5－亚烷基、C2－C5－次烷基、C7－C19－芳烷基或C6－C14－芳基基团，R3和R4可以是氢或它们一起形成具有3－7个碳原子的稠合的、取代或未取代的基团，X是碳或氮，并且当X是氮时，不存在R3。

Using p-xylene, different acyl chloride and alkylogen, six kinds of isomers were synthesized, with similar structure, carbons of same quantity, and the position of alkylaryl dissimilarity.

本文利用对二甲苯、不同碳数直链酰氯以及卤代烷合成出6种结构相似、长链烷烃碳数为12、芳基在烷烃链不同位置的烷基苯磺酸盐类表面活性剂。

The intercalation of ethylamine, butylamine, hexylamine and octylamine is more facile than that of dodecylamine and hexadecylamine, and the layered structure of the former intercalates is more ordered displaying a more intense and symmetrical (001) peak in their XRD patterns.

在直链的烷基胺中，乙胺、丁胺、己胺和辛胺较易嵌入层间，嵌入物的(001)峰均很强，并有明显的(002)峰出现，表明得到的嵌入物层状结构较规整。

In this paper,many achievements of studying on the synthesis,thermal decomposition properties and characteristics of the energetic complexes based on high-energetic compounds containing many nitrogen atoms such as carbohydrazide and 5-nitro-2,4-dihydro-3H-1,2,4-triazol-3-one as well as tetrazole,etc.

概述了以高能多氮直链化合物如碳酰肼，富氮杂环化合物如三唑、四唑类为配体的配合物的合成、热行为以及性能的研究情况，同时简要地从分子或原子结构描述了一些其他多氮含能配体如肼、肼基甲酸甲酯等所形成的配合物的晶体结构以及热分解行为，并对含能配合物的发展方向进行了展望。

Animal and plant waxes are esters of fatty acids and either a sterol or a straight-chain higher alcohol (e.g., cetyl alcohol).

动物蜡和植物蜡属脂肪酸的酯类，这些醇类可以是一组称为固醇的醇类，或者是一种在直链中的醇。

Animal and plant wax es are esters of fatty acids and either a sterol or a straight-chain higher alcohol (e.g., cetyl alcohol).

动物蜡和植物蜡属脂肪酸的酯类，这些醇类可以是一组称为固醇的醇类，或者是一种在直链中的醇。

The hydrolysis of chitin under concentrated alkali conditions would produce double anion because of conjugative effect and steric effect (producing primary amine which had positive ion properties and linear chain macromolecular structure and which has good flocculability and clarification performance).

因共轭效应和空间效应，甲壳质在浓碱条件下水解，能形成双负离子，形成具阳离子性质的伯胺和具有直链高分子结构，具有优良的絮凝性能和澄清作用。

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。