磷灰石

Keywords La_（9.33）Si_6O_（26）;ultrafine powder;synthesis by self-combustion;apatite-type electrolyte

La_（9.33）Si_6O_（26）；超细粉体；自燃烧法合成；磷灰石型电解质

Threaded machined and RBM, grade 3, commercially pure, titanium, screw-shaped inplants were used in this study.

目前这一研究的目的主要在于对比机械加工的表面和表面经由羟基磷灰石颗粒（可吸收喷砂材料：RBM）喷砂种植体的反应。

Mineral compositions of phosphate concretions mainly contain apatite, quartz, calcite, barite, pyrite and organic matter, etc.

磷结核的矿物组成主要有磷灰石、石英并含有方解石、白云石、重晶石、黄铁矿有机质等。

Phosphorus origins of phosphate concretions mainly include phosphor us of microrganisms′assimilation, reduction of Fe-hydroxide and degration of organic matter. Apatites form during early diagenesis.

磷结核的P的来源主要包括微生物富P，Fe氧化物、氢氧化物的还原以及有机质的降解等，各种来源的P在成岩作用过程中富集形成磷灰石。

Methods The sintered Ti -HA FGM, pure HA and pure Ti were respectiely implanted into the parietal bone of rabbits.

方法将钛/羟基磷灰石功能梯度材料和纯HA、纯Ti分别置入兔颅骨中，用扫描电镜进行形态学方面的观察。

In order to investigate the possibility of porous hydroxyapatite ceramics in the repair of skull bone defect, twenty-four rabbits were used. The bone defect model was created by operation to obtain a defect in parietal bone in a size of 1 cm x 1 cm. Filled the defect with HAC and methyl-methacrylate-syrene copolymer to fill the defect as control. At 1st, 2nd and 3rd months after operation, behavior of the rabbits was observed and then these animals were sacrificed and specimens were examined under microscope.

为了探索多孔羟基磷灰石陶瓷作为人工材料修复颅骨缺损的可能性，选健康家兔24只，切除颅顶骨造成缺损，分别用多孔HAC植片及无孔甲基丙烯酸甲脂－苯乙烯共聚物植片修复家兔颅骨缺损，于术后第1，2及3个月处死动物，进行术后反应及组织学观察。

On the basis of the previous research work of our lab, the PAMAM/HA composition coatings have been deposited on the electrodes by continuous potential step method, to study the electrochemical behaviors of the biological molecule such as cytochrome c, glucoseoxidase, haemachrome.

本文在实验室已有的对HA电沉积研究的基础上，应用双电位阶跃法在铂电极和玻碳电极上电沉积制备羟基磷灰石涂层，考察细胞色素C、葡萄糖氧化酶、血红蛋白等生物大分子在HA修饰电极上的电化学行为。

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。