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To establish the stable theory bases of choiceness gene induced, expression and breeding of high yield and high ephedrine content through series research the molecular biology.

进行系统的分子生物学研究,为麻黄的优良基因导入、表达及高产与高含碱量新种质的选育奠定坚实的理论基础。

Cytosine A nitrogenous base found in DNA and RNA.

胞嘧啶:在 DNA 和 RNA 中存在的含氮的碱基。

A basic nitrogenous organic compound produced by bacterial putrefaction of protein.

尸碱一种含氮的有机化合物,由蛋白质被细菌感染导致腐烂而产生

ObjectiveTo establish the determining method of ScopoLamine in plasma with high performance liquid chromatography.

目的建立血浆中东莨菪碱的高效液相色谱测定方法,为含东莨菪碱的中药复方动物体内药动学研究提供基础。

This paper describes the succulence of organs of Suaeda salsa seedlings treated with different salts. The growth of the seedlings was markedly enhanced by NaCl but markedly inhibited by NaF treatment. The degree of succulence was the greatest in leaves, second in stems and third in roots of seedlings treated with NaCl.

用不同的钠盐和含Cl-的盐处理盐地碱蓬幼苗后,测定不同器官的肉质化及相关生理指标,结果表明:NaF处理明显抑制盐地碱蓬幼苗的生长;NaCl处理下生长最好,其中叶片的肉质化程度显著高于对照,正在伸展茎次之,而根则不明显;其次是NaHCO3,肉质化程度也明显高于对照;CaCl2和KCl处理下肉质化程度都与对照相似;MgCl2处理下叶片的肉质化程度明显低于对照。

Anhydrous sodium arseniate was got after stirring the liquid for 3 h at 55℃.

以锑精炼产生的含砷9%、含锑2%、含碱40%左右的二次砷碱渣为原料,在液固比为3:1、90℃以上搅拌浸出3h,过滤后得到砷锑渣和浸出液。

These conditions included original material source, reagent ratio, base solutions, power of the microwave, reaction time and so on.2, Chitosan obtained from above was modified by Schiff base type macrocycles, which was prepared by the reaction of the reagents of salicylaldehyde, glacial acetic acid, hydrobromic acid, chloroepoxy propane and the others.

反应的最优化条件为:物料比1:25;反应时间20min;NaOH溶液浓度为50%;微波功率为450w。 2、利用原料水杨醛、氢溴酸、冰醋酸等采用四步法合成了含羟基的Schiff碱型大环化合物,然后以取代方法将此Schiff碱型大环化合物负载到壳聚糖上,得到具有特殊结构与性能的壳聚糖衍生物,并得到各中间产物的红外光谱图。

Methods: The medicinal plant Rheum wittrochii Lundstr., was genetically with Ri plasmid harbouring in Agrobacterium rhizogenes 9402 strain to induce hairy roots; transformed the opines from the hairy roots were assayed by paper electrophoresis; the contents of free anthroquinones such as aloe-emodin, rhein, chrysophanol, emodin, physcion, 8-O-methylchrysophanol from the hairy roots were quantitatively determined by HPLC technique.

用发根农杆菌Agrobacterium rhizogenes 9402 所含Ri质粒遗传转化药用植物天山大黄以诱导发根用纸电泳法检测发根中冠瘿碱的存在;用高效液相色谱法测定发根中芦荟大黄素、大黄酸、大黄酚、大黄素、大黄素甲醚、大黄酚-8-甲醚等游离蒽醌化合物的含量。

The alkaline glass is the ultra-thin glass containing alkaline metal oxide in chemical composition, i.e.

按照化学成分的不同,超薄玻璃可分为含碱超薄玻璃和无碱超薄玻璃。

The alkaline mineral s which contain Na and/or K, such as feldspars, micas, etc.

化学组成中含有Na,K的含碱矿物,如各种长石、云母等,普遍存在于混凝土集料中。

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