羟基

Aim To observe the c-fos expression in the caudate-putman of 6-OHDA-lesioned rats after Apomorphine intraperitoneal injection and to investigate the inherent mechanism of it.

目的观察6-羟基多巴胺（6-OHDA）毁损黑质后，不同时间点腹腔注射阿朴吗啡大鼠纹状体c—fos表达情况，探讨其可能机制。

The effect of the initial concentration and the addition order of arsenate and chromate on their uptake by hydroxy-Fe-montmorillonite complex was investigated.

在模拟氧化及酸性土壤条件下，用制备的低聚合羟基铁-蒙脱石复合体进行了砷酸根、铬酸根离子的竞争吸附实验，研究了砷酸根离子和铬酸根离子不同用量及不同添加顺序对竞争吸附的影响，并与蒙脱石和含水氧化铁进行了对比。

Objective:To observe the clinical effect of total hip arthroplasty with hydroxyapatited-coated implants on middle and young patients.

目的：观察羟基磷灰石涂层人工髋关节应用于中青年患者的临床效果。

The results show that all the hmgr genes from pigs, cattle and chickens are astable enzyme proteins with the same gene sequence characteristics and encoding protein and physical and chemical properties; all the amino acid sequences have a high degree of homology, containing two conservative HMG-CoA binding motifs and two NADPH binding motifs; all the amino acid sequences, containing signal peptide, are secreted proteins; they are all hydrophobic transmembrane proteins with five transmembrane domains; random coil and α-helix are the main structural elements in the HMGR polypeptide chain; all the predictions of three-dimensional structure are V- shaped; there are more closer evolution relationship between the HMGR gene from pigs and cattle.

结果表明：猪、牛和鸡HMGR基因序列特点及编码蛋白质理化性质基本相同，均属不稳定类酶蛋白；保守结构域氨基酸序列具有高度的同源性，均含有保守的2个β-羟基-β-甲基戊二酸单酰辅酶A结合基序和2个还原性烟酰胺腺嘌呤二核苷酸结合基序；均有信号肽，属分泌型蛋白质；属于跨膜的疏水性蛋白，均有5个跨膜结构域；无规则卷曲和α-螺旋是HMGR多肽链中的主要结构元件；三维结构预测都呈"V"字形；猪和牛HMGR基因的进化关系最近。

Abstract—3b-Hydroxy-12-oleanen-27-oic acid was an antitumor active oleanane-type triterpenoid from the rhizomes of Astilbe chinensis.

摘要- 3B型-羟基- 12 - oleanen - 27 -乌苏酸是一个抗肿瘤活性齐墩果烷型三萜从根茎 astilbe中华。

Chiral amino-hydroxy compounds have been proved to be a very efficient class of ligands in a variety of catalytic asymmetric syntheses and chiral auxiliary synthesis catalyzed by metallic ions.

手性氨基-羟基化合物是一类用于催化不对称合成和手性辅助合成的重要配体。

And many multifunctional enzymes involved in this pathway are rare in other autotrophic pathways.

途径中的关键代谢中间产物为3-羟基丙酸，并且涉及到多种在其它的自养CO2固定途径中并不常见的多功能酶。

In this part, a simple and inexpensive method for the synthesis of peroxynitrite based on the autoxidation of hydroxylamine in alkaline media was described.

文中对该检测体系的反应动力学特征、反应酸度、荧光检测酸度、羟基化底物的选择进行了研究，并提出了该方法的检测机理。

By the instance of hydroxyl silicate mineral powder additives application on motor,the gas escape amount of bent axle box was measured,and based on the decrease feature of gas escape amount,it demonstrates that hydroxyl silicate mineral powder additive possesses self-repairing performance,and proves that the method of examination in-situ is valid.

以羟基硅酸盐矿物微粉添加剂在发动机上的应用为例，检测了发动机轴轴箱漏气量，根据漏气量减少这一特征证明矿物微粉添加剂具有良好的自修复性能，也证明此原位检测方法是有效的。

The oxidationresistant experiments were studied by refined flavones, such as reducing power, antioxidation actions to axunge, scavenging action to superoxide anion, scavenging action to hydroxyl free radical.

利用精制后的沙棘总黄酮进行了还原能力的测定、抗猪油氧化、清除超氧阴离子自由基和清除羟基自由基实验，实验结果表明沙棘黄酮有良好的抗氧化能力。

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。