查询词典 alkali cellulose

Methods:the dispersible tablets was prepared by taking lose subsfrits hydroxypropyl cellulose and hydroxypropymethyl cellulose as excipient.the phenobarbital content in tablets was determined by uv spectrophotometry at 240 nm.results:the uniformity test of dispersion showed that the tablets could smoothly disperse and pass through a no.2 sieve within 1 min.

以低取代羟丙基纤维素、羟丙甲纤维素等为辅料研制该分散片，紫外分光光度法测定该片中苯巴比妥的含量，测定波长为240 nm。结果：分散均匀性试验表明该分散片在1 min内均匀分散并通过2号筛。

Crystalline structure and thermal property of cellulose triacetate and cellulose diacetate were studied.

研究三醋酸纤维素和二醋酸纤维素的结晶结构和热学性能。

Cellulose triacetate is the product of a chemical reaction between cellulose and acetic acid. Vinegar syndrome is the reverse reaction of the breakdown of the acetate.

醋酸纤维素是纤维素和醋酸反应的产物，而醋酸综合症就是醋酸盐衰化中退化反应的结果。

Cellulose diacetate and cellulose triacetate, for example, are not attacked by microorganisms because most of the hydroxyl groups have been converted to acetate groups.

比方说由于大部分的羟基已经被转化成了醋酸基，双乙酸纤维素和三乙酸纤维素就不再受微生物的侵蚀。

Chemical treatments could efficiently decrease the amount of waxiness, the cellulose, semi-cellulose and silicon dioxide of raw rice straw, while water-soluble compounds of the treated rice straw was increased and therefore the treated straw could be easily attacked by soil microorganisms.

在此基础上，本文通过小麦和菠菜盆栽试验，研究了经过化学处理的水稻秸秆与氮肥配施对土壤微生物量碳、氮、矿质态氮(NO_3~--N+NH_4~+-N)的动态变化以及作物生长的影响，获得以下研究结果： 1。

For 480 days of decomposition, the decomposition rate was highest in soil with medium fertility and lowest in soil with low fertility among three type of fertility. The decomposition of water soluble factions and lignin were promoted in medium fertility soil. However, alcohol-benzene soluble fraction, and semi-cellulose and cellulose fraction were decayed acceleratedly in soil with high fertility. Furthermore, more humic substance was formed and energy states of decayed corn stalk was highest in soil with high fertility.

腐解480 d，3种肥力间比较发现，玉米秸秆在中等肥力田块上矿化率最高，低肥力田块上的最低；中等肥力土壤能够促进玉米秸秆中的水溶性有机组分和木质素的分解，而高肥力土壤能够促进苯–醇溶性组分和半纤维素、纤维素分解，并有利于腐殖物质的形成，而且腐解物的能态最高。

This dissertation is on the producing bacterial cellulose with Acetobacter xylinuml.1812. The fermentation condition of Acetobacter xylinuml.1812 has been optimized . Some physical and chemical characters of bacterial cellulose have been studied.

本课题是利用木醋杆菌(Acetobacter xylinuml.1812)发酵生产细菌纤维素，优化了发酵条件，并对细菌纤维素的部分理化性质进行了研究。

For the purpose of research on relationship between liquid crystal phenomena and blood compatibility, the propionic, n-butyric esters of hydroxypropyl cellulose were prepared with hydroxypropyl cellulose and propionyl chloride/ butyryl chloride. The reaction conditions and phase behavior have been studied. The results show that the reaction time, temperature and amount of propionyl chloride have effect on content of propionyl, and the amount of proionyl chlorideis more obvious than the other factors.

液晶态的血液相容性是目前抗凝血材料研究的一个新领域，本文是在一系列液晶态材料血液相容性研究的基础上以羟丙基纤维素和丙酰氯为原料合成羟丙基纤维素丙酸酯和羟丙基纤维素丁酸酯两种液晶高分子化合物，并对其合成条件和相变行为进行了研究，结果表明：反应时间、反应温度和酰氯的用量均对产物中的酰基含量有影响，其中以酰氯用量影响最为明显。

Immunogold labeling demonstrated that there was no chitin and cellulose in young and thin conidial walls; chitin appeared in the well-developed wall in later stage of conidial development and little cellulose, however, was detectable in the wall of mature conidia.

免疫金标记结果显示，幼嫩的分生孢子壁中缺乏几丁质和纤维素，只有在成熟的分生孢子壁中含有几丁质；出乎意料的是在成熟分生孢子中发现有少量纤维素的存在。

The number of mold, bacteria, culturable microorganisms, aerobic nitrogen-fixing bacteria, anaerobic nitrogen-fixing bacteria, aerobic cellulose decomposition microbes, anaerobic cellulose decomposition microbes were the most in 16-year-old organic tea garden, and the biomass carbon and nitrification of edaphon were also the strongest.

霉菌、细菌、可培养微生物总量、好气性自生固氮菌、嫌气性自生固氮菌、好气性纤维分解菌、嫌气性纤维分解菌均以16年生茶园最多，土壤微生物生物量碳和硝化作用也以16年生茶园最强。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。