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A large quantity of valuable data and results were obtained, which is of great importance to develop the theory for the designing and controlling of the properties of the crystallizable aromatic polymers.

研究过程取得了大量有价值的数据和结论,可为设计,调节及控制结晶性芳香族高聚物材料的性能提供必要的理论基础,并使得聚合物伸直链晶体应用于功能器件成为了潜在的可能。

The cell density of phytoplankton was 41150×10~4/L,increased by 62.88 times from 1987. Microcysis、 Oscillatoria、 Scenedesmus、 Chlorella、 Cyclotella and Melosira ,the eutorphicational or hyper-eutrophicational indicator species, were the dominant species of phytoplanton in Chang River.

优势种群为微囊藻、颤藻、栅裂藻、小球藻、小环藻、直链藻,均为富营养型或重富营养型水体指示种群。

The synthetic process of dialkyl phosphate by reaction of long -chain alcohol with phosphorus oxychloride was studied. The influence of molar ratio of reactants, reaction temperature, reaction time on process of esterification and hydrolysis was investigated too.

研究了以三氯氧磷与正构偶数高碳醇为原料合成磷酸二长直链烷基酯(C10~16-DAP)的工艺条件,考察了物料配比、反应温度和反应时间等因素对酯化反应与水解反应进程的影响,通过正交实验方法,确定了优化的合成工艺条件。

Double chain naphthyurea/thiourea piperazine derivatives could act as a fluorescent chemosensor not for aromatic dicarboxylate but for linear dicarboxylate especially for pimelate anion.

双链萘脲基或硫脲基哌嗪化合物与直链二羧酸盐络合具有较高的稳定常数和1∶1的化学计量比,两者通过六个氢键形成双点结合的络合物。

The spectra of X-ray diffract revealed that its crystal is B type and the value is about 18%, far lower than that of ordinary maize starch. With the method of chemistry modification, we modified the amylose starch with acetates. The result showed that the best reaction condition was at the ratio of 1:5.3 (glucose: acerbity), with MSA 1.5% catalyzer, at 75℃ for 3 h.

利用化学改性法对高直链玉米淀粉进行醋酸酯化改性,最佳反应条件为,淀粉葡萄糖基与酸的质量比1:5.3、催化剂甲磺酸用量为体系的1.5%、反应温度75℃、反应时间3 h,在此条件下可制备取代度为2.84的醋酸酯淀粉,比普通玉米淀粉高0.78。

By the partial purification of Arthrobacter nicotinovorus D-97 endocellular enzymes and the results of enzymatic reaction of enzymes of partition collection, it was found that enzymes related to trehalose synthesis were consisted of Trehalose-forming Enzyme and Trehalose-releasing Enzyme . Trehalose-forming Enzyme could convert maltooligosaccharides into non-reducing maltooligosyl trehalose by intramolecular transglycosylation, and Trehalose-releasing Enzyme could hydrolyze α-1, 4 linkage between the trehalose residue and the maltooligosaccharide residue to release trehalose and maltooligosaccharides with two glucose monomer lesser.

将食尼古丁节杆菌D-97胞内酶部分纯化并对各收集组分进行酶反应,发现其海藻糖合成酶系由海藻糖生成酶(Trehalose-forming Enzyme,TFE)和海藻糖释放酶(Trehalose-releasingEnzyme,TRE)组成,前者分子内转糖基将直链麦芽寡糖转化为没有还原性的麦芽寡糖基海藻糖,后者专一切割麦芽寡糖基海藻糖分子上麦芽寡糖基与海藻糖连接的α-1,4糖苷键,从而释放出海藻糖和减少了两个葡萄糖单体的麦芽寡糖。

The unconditional and conditional analyses of genetic models and the corresponding statistic methods, including endospermic, cytoplasmic, and maternal plant genetic systems, were used to analyze the genetic relationships between protein content and the appearance quality traits of indica rice (Oryza sativa L.).

应用包括胚乳、细胞质和母体植株基因的遗传主效应以及基因型×环境互作效应的数量性状遗传模型及非条件和条件分析方法,研究了籼稻稻米蛋白质含量与外观品质性状间的遗传相关性,进一步揭示了籼稻糙米重、稻米直链淀粉含量对稻米蛋白质含量与外观品质性状间遗传相关性的影响。

Ratio of head rice,ratio of length and width ,core rate,amylose content gelatination consistency are important traits of quality.

主成分分析表明:整精米率、长宽比、垩白率、直链淀粉、胶稠度这五个品质性状对稻米品质的影响较大。

Integrated Agricultural Service, Wuyun, Jinyun, Zhejiang 321400, ChinaAbstract: Based on our early rice breeding practices in Hangzhou and in South China region, 14 varieties with different apparent amylose content were planted in early and late season in Hangzhou (30° N, HZE, HZL), Zhejiang province, East China, and winter season in Hainan province, South China (18°N, HN), respectively. The changes in eating and cooking quality of each variety, including AAC, gelatination temperature, gel consistency and RVA profiles were observed and scored.

摘 要:按照目前杭州及以南地区早稻育种一年三季(当地早、晚2季,海南冬繁1季)的实践,选择了14个不同表观直链淀粉含量的早稻品种分别在杭州作早稻、翻秋和在海南冬季种植,对同一品种的AAC、胶稠度、糊化温度以及淀粉粘滞特性的变化特征进行了研究。

SM6 and SM7 of uncrystal were analyzed through GC-MS, the results showedthat SM6 main contained unsaturated fatty aldehyde with fragrance, i.e.-2,4-decadienal(58%), tetradecanoic acid (55.78%), 2-decenal(50%), Phthalic acid isobutylundecyl ester(47%), 2, 4-Decadienal(41%), 2-Undecenal (31%), 2-Methyl-Z,Z-3, 13-octadecadi-enol(18.84%), and SM7 contained saturation alkanes, i.e. 1, 2-Benzenedicarboxylic acid, butyl cyclohexyl ester(23.90%), Triacontane(22.63%),Nonacosane(21.04%), Heptadecane(18.84%), Octacosane(13.58%). Toxicological experiments were done to insure the pigment safety.

并对紫红丝膜菌色素非晶体部分的黄色油状物SM6和紫色粉末物SM7作了GC-MS分析,结果显示SM6中主要为具有香气成分的不饱和脂肪醛,其中含量较高的依次为:-2,4-癸二烯醛(58%)、十四烷酸(55.78%)、2-癸烯醛(50%)、邻苯二甲酸异丁基十一烷酯(47%)、2,4-癸二烯(41%)、2-十一碳烯醛(31%)、2-甲基-Z,Z-3,13-十八碳二烯酸(18.45%)等;SM7中主要为饱和直链烷烃,其中含量较高的依次为:1,2-苯二羧酸丁基环己酯(23.90%)、三十烷(22.63%)、二十九烷(21.04%)、十七烷(18.84%)、二十八烷(13.58%)。

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