羟基

Objective To observe the clinical effect and factors of hydroxylapatite and iodoform combination as repairing perforated molar pulp.

目的 研究复方羟基磷灰石碘仿糊剂用于修复磨牙髓室底穿孔的临床疗效及影响因素。

In addition, the 10 peptides are rich in basic amino acid residues and serine and threonine, it is likely that the peptides combine with iNOS FAD binding domain through formation of ionic bond and hydrogen bond.

因此，这些多肽很可能通过与iNOS的FAD结合区的酸性氨基酸形成离子键，以及通过丝氨酸或丝氨酸的醇羟基与酶分子的有关部位形成氢键而结合并起到抑制作用。

Although sulfuric group can ionize at any pH value, but the ionization degrees of carboxylic and phenolic group in the solutions increase with increasing pH values.

磺酸在所有pH范围完全电离，但羧酸和酚羟基的电离程度随溶液pH降低而减少。

Lutein and zeaxanthin are both dihydroxy-carotenoids with the ionone ring systems distributed widely in nature.

叶黄素和玉米黄质是含紫罗酮环的二羟基类胡萝卜素，在自然界广泛存在。

Lutein is dihydroxy-carotenoids with the ionone ring systems distributed widely in nature as well as the main component of the retina macular pigment in human eye.

叶黄素是自然界广泛存在的含紫罗酮环的二羟基类胡萝卜素，也是人眼视网膜黄斑色素主要组成部分。

Odoquinazolin-4(3H)-one,7-methyl-4(3H)-quinazolinone,7-bromoquinazolin-4(3H)-one were synthesized by using anthranilic acid、2-amino-5-nitrobenzoic acid、2-amino-4-nitrobenzoic acid,6-nitro--4(3H)-quinazoline-one、o-amino-terephthalic acid, 2-amino-4-hydroxy benzoic acid、2-amino-5-bromo-benzoic acid、2-amino-5-iodine acid,1、4-butynediol、L-glutamine、isatin anhydride、formamide as starting materials and utilizing microwave-assisted synthetic approach.

本文利用微波辅助合成的方法，以邻氨基苯甲酸、2-氨基-5-硝基苯甲酸、2-氨基-4-硝基苯甲酸、邻氨基对苯二甲酸、2-氨基-4-羟基苯甲酸、2-氨基-5-溴苯甲酸、2-氨基-5-碘苯甲酸、5-甲基-2-氨基苯甲酸等为原料与甲酰胺反应，以及以1，4-丁炔二醇、L-谷氨酰胺与靛红酸酐反应，共合成了13个喹唑啉酮衍生。。。

The prepolymers can be prepared having isocyanate, hydroxyl, or a variety of other reactive functional groups.

可以制备具有异氰酸酯、羟基、或各种其它反应官能团的预聚物。

After his wife's death, in nineteen-oh-five, Joplin wrote a concert waltz called "Bethena."

在他妻子的死亡，19羟基- 5，乔普林写了音乐会圆舞曲称为"Bethena。"

Hydroxyl ketene dithioacetals were treated under diversely catalyzed conditions, and a wide range of significant compounds and synthetic precursors thus were obtained.

羟基二硫缩烯酮类化合物可以通过各种不同的反应条件进行多种转化，能够获得许多有意义的化合物和合成潜体。

Besides, The reaction of aldehydes with dithioacetate enethiolates followed by alkylation effectively gives α-hydroxyl ketene dithioacetals.

此外，用醛与硫代羧酸硫酯反应再通过烷基化也可以有效地获得α-羟基二硫缩烯酮类化合物。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。