查询词典 aldehyde group

This invention applies mild condition uses substituent group triphenylamine aldehyde or triphenylamine dialdehyde as raw material to react by heating with 2-(5,5-dimethyl-3-vinylcyclohexenyl-2-enylidene)propanedinitrile group to produce the intermolecular charge transfer chromogen with high decomposition temperature, non-coplanar structure, and triphenylamine group.

本发明采用温和的手段，将取代基三苯胺单醛或取代基三苯胺双醛为原料与2-(3，5，5-三甲基环己烯-2-烯亚基)丙二腈共热生成具有高的热分解温度、非共平面空间结构的含三苯胺基团的分子内电荷转移生色团。

Methods: 60 freshly extracted , single-rooted premolars were randomly divided into two experimental groups (cinnamic aldehyde, gallnut decoction) and four control group (FC group, calcium hydroxide mixed with propylene glycol group, negative the control group and positive control group),.

选取60颗新鲜拔除的单根管前磨牙，随机分为2个实验组和4个对照组（ FC 组、氢氧化钙丙二醇糊剂组、阴性对照组和阳性对照组），每组10颗牙。

The method uses tall fat emulsion to build bandicoot tall lipemia model of sexual fatty liver, experimental cent is group of high dose of drink of fat of regular set, model group, disappear and small dose group, treasure liver peaceful is electropositive group to the south of, with drink of fat of disappear of tall, small dose peaceful of He Dongbao liver undertakes intervention, determine branch content exceeds to cross oxide in liver fat content and liver enzymatic active, third 2 aldehyde content and vitamin E level.

方法采用高脂乳剂建立大鼠高脂血症性脂肪肝模型，实验分为正常组、模型组、消脂饮高剂量组和低剂量组，以东宝肝泰为阳性组，以高、低剂量消脂饮和东宝肝泰进行干预，测定肝脂含量及肝中超歧物过氧化物酶活性、丙二醛含量和维生素E水平。

With ester- 27 in hand, the vinyl group was next converted to the aldehyde moiety via ozonolysis, employing reduction of the ozonide with dimethylsulfide or PPh 3 , followed by treatment with DBU in THF to effect epimerization; aldehyde- 29 was produced in a combined yield of 65% for the two steps.

同酯-27手，下一组黑胶转为经醛啉臭氧、用人的臭氧减少与甲基或产后大出血3、治疗后，在指定四氢呋喃对异构；醛类-29年联合摄制产量65%的两步。

Cut off five sixth of rat′s kidney to make chronic kidney adynamia model,divide into pseudo operation group,model group,surround aldehyde oxygen amylum group,"Shenshuaining"group and traditional medicine compound high,middle and low dosage group,perfuse stomach separatehy,after four weeks,measure guantiey of Hb,RBc and weight.

采用切除大鼠肾脏5 6制备慢性肾衰模型，并随机分成假手术组、模型组、包醛氧淀粉组、肾衰宁组及中药复方的高、中、低剂量组，分别灌胃给药，四周后测血红蛋白及红细胞计数，并称量大鼠体重。

In this work , 1,8-octodiol, the starting material, reacted with 40% hydrobromic acid to produce 8-bromooctan-1-ol, with the catalytic action of PPTs, its hydroxyl group was protected by 2,3-dihydropyran. Then it coupled with 1-heptaalkyne, by means of P-2 nickel as catalyst, stereoselectivity catalysis hydrogenated, with the catalytic action of acid to take off extremital 2, 3-dihydropyran which protected hydroxy group, then used PCC to oxidize alcohol into corresponding aldehyde.

以1，8-辛二醇为原料，与40%氢溴酸进行单溴代反应，得到8-溴-1-辛醇，在对甲苯磺酸吡啶盐的催化下与2，3-二氢吡喃反应，保护分子中的羟基，再与1-庚炔进行偶联，以P-2镍为催化剂立体选择性催化加氢，酸性条件下脱末端的2，3-二氢吡喃对羟基的保护，使用氯铬酸吡啶盐将醇氧化成醛。

Combined with GC-MS and GC-FTIR analysis, experimental result showed that bio-oil produced from cellulose mainly composed of LG and HAA, bio-oil from xylan mainly composed of acid compounds and aldehyde compounds, while bio-oil from lignin composed of phenol compounds with different functional groups such as methoxyl group, alkyl group and hydroxyl group. We research the thermal stability of the main product.

结合GC—MS、GC—FTIR分析技术对生物油的组分进行了分析，得出了纤维素热裂解生成的生物油以左旋葡聚糖和乙醇醛为主，木聚糖热裂解得到的生物油主要为酸和糠醛等，木质素热裂解生成的生物油的主要成分苯酚类化合物，并分析了各主要产物的热稳定性。

In the existing process of PVB, it has disadvantages of unsteady aldehyde groupdistribution, low content of aldehyde acetal group .

本文针对聚乙烯醇缩丁醛传统生产工艺生产的PVB存在缩醛基分布不均，缩醛度低等缺陷，系统地研究了分阶段醇解一缩合的均相工艺，二甲基亚砜的均相工艺以及极性匹配的醇法均相工艺。

The NaIO4 oxidation has been employed in the process of changing the adjacent hydroxyl to aldehyde group. It was showed that through repeat cross-link, the lipase density on the carrier surface was enhanced about 30%.

通过醛基被交联程度来评价交联过程的优劣：首先对纤维的氧化过程进行了简单优化，进而通过反复交联法与酶蛋白交联。

Methods: 60 freshly extracted , single-rooted premolars were randomly divided into two experimental groups (cinnamic aldehyde, gallnut decoction) and four control group (FC group, calcium hydroxide mixed with propylene glycol group, negative the control group and positive control group),.

标本牙去除牙冠部及根尖部，留取6mm长牙根，50颗牙建立粪肠球菌根管感染模型后，20颗牙根管内分别放置桂皮醛、五倍子水煎剂，另30颗感染根管放置FC、氢氧化钙丙二醇糊剂和生理盐水。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。