HPPA

The method of protein absorption and osteoblast culture in vitro shows : modified HPPA can promote osteoblast growing and increase the activity of AKP .

蛋白吸附和体外成骨细胞培养表明改性后的HPPA能促进成骨细胞的生长和提高碱性磷酸酶的活性。

Objective To improve the bioactivity of hydroxyl poly calcium sodium phosphate appatite ( HPPA ) by surface modification using cold plasma technique .

目的利用低温等离子体活化处理来提高聚羟基磷酸钙钠（HPPA）的生物活性。

The maximum length of the installation path supported is108 bytes on AIX and105 bytes on HPPA .

支持的安装路径最大长度在AIX上是108个字节，在HPPA上105个字节。

Method Surface modification of HPPA was done with cold plasma technology , structure change and the best technological parameters of HPPA were analysed and its bioactivity was determined by protein absorption and osteoblast culture in vitro .

方法用低温等离子体表面改性HPPA，研究材料结构的变化和最佳工艺参数，并用蛋白吸附和体外成骨细胞培养评价其生物活性。

Firstly the intermediate 2 - ( 2-hydroxyphenyl ) phenylphosphinic acid ( HPPA ) was prepared in 92.5 % yield through continuous esterification , acylation and hydrolysis .

首先将酯化、酰基化、水解反应连续进行，得到了中间体2-（2-羟基苯基）苯基膦酸（HPPA），收率92.5%。

This study was aimed to evaluate the histocompatibility of hydroxyl poly calcium sodium phosphate ( HPPA ) preliminarily . HPPA and hydroxylapatite were implanted in the mandibular defect in dogs .

为了初步评价羟基聚磷酸钙钠（HPPA）材料的组织相容性，将该材料和对照材料羟基磷灰石植入体植入到动物颌骨组织缺损区内，观察植入材料与骨组织界面作用的性质。

It was found that the flame retardancy of TAEP was mainly acting in the gas phase , whereas HPPA mainly acting in the condensed phase , and the gas phase mechanism held the dominant effect as their blends were burning .

TAEP主要作用于气相，而HPPA主要作用于凝聚相，两者混合的固化膜则以气相作用机理为主。