磷灰石

The histological sections, with HE and Masson's trichromic staining made, to evaluate the effectiveness of repair of bony defect. Results There existed new cartilage and new immature bone tissue in the bone substitute in 4 weeks after operation, as well as mass of cartilageous cells,osteoblasts, collagen tissue and more small vessels were seen.

方法高温法制备出磷酸四钙，然后在模拟体内环境下将其与无水磷酸氢钙发生水化固化反应，合成水泥型羟基磷灰石人工骨，将自制的CPC人工骨植入新西兰兔桡骨大段骨缺损模型中，术后4、8、12、16周取材，采用HE染色和Masson三色染色分析评价骨缺损修复效果。

Methods Tetra-calcium phosphate was prepared by high heating, than imitated the internal situation of humanbody, for hydrolization and solidation,to synthesize the hydroxy-calcium phosphate,as artificial bone in sement-type ,then im-planteted them into the large segmental defect of radius of New Silan rabbits model. The implanted materials were taken out at 4th, 8th, 12th, and 16th weeks after implantation. The histological sections, with HE and Masson's trichromic staining made, to evaluate the effectiveness of repair of bony defect.

方法高温法制备出磷酸四钙，然后在模拟体内环境下将其与无水磷酸氢钙发生水化固化反应，合成水泥型羟基磷灰石人工骨，将自制的CPC人工骨植入新西兰兔桡骨大段骨缺损模型中，术后4、8、12、16周取材，采用HE染色和Masson三色染色分析评价骨缺损修复效果。

We developed a triphasic ceramic composite comprising of HA, beta-tricalcium phosphate and calcium silicate.

文章对由硅酸钙、β-磷酸三钙和羟基磷灰石组成的三相陶瓷复合物进行了研究。

Most of apatites are unannealed and from different sources.

磷灰石样品大多未退火，来自不同的物源区。

Unground natural calcium phosphates, natural aluminium calcium phosphates and phosphatic chalk, excl.

apatites 未碾磨天然磷酸钙、天然磷酸铝钙及磷酸盐白垩，磷灰石除外

The morphology of the mineral dependents on the solution characteristics. The main component of mineral was hydroxyapatite containing a little of CO32- group which the Ca/P ratio is 1.53, similar to the major mineral component of bone tissue. The porosities of the mineralized and unmineralized 3-D porous PLGA were (84.86±8.52)% and(79.70±7.70)% respectively. The biomechanical strength was 0.784±0.156 N/mm2 in unmineralized PLGA and 0.858±0.145N/mm2 in mineralized PLGA.

结果：PLGA经碱性溶液水解处理后表面亲水性明显增强，在0.5倍SBF中仅有少量矿物沉积，在SBF及1.5倍SBF中矿化后表面可以形成明显的矿化物；矿化物的形态与矿化液的浓度有关；矿化物主要成分为羟基磷灰石，含有碳酸根成分，钙磷比为1.53，类似于人骨无机质。

Objective To research the feasibility of porous hydroxylaptite bioceramic as a kind of bone grafting substitute in the cervical subtotal vertebrectomy.

目的 研究多孔羟基磷灰石生物陶瓷作为植骨替代材料在颈椎椎体次全切除术中的可行性。

The experiment take the normal butyl alcohol as the dispersion medium, first comes to anchor using Biological glassthe effect in the negative pole Ti6Al4V deposition BG, then causes the hydroxy apatite to deposit in the BG coating, then passes through agglutinates obtains the contact surface union intensity better biological activity gradient ceramics coating.

实验以正丁醇为分散介质，先利用生物玻璃的抛锚效应在阴极的Ti6Al4V沉积上BG，然后使羟基磷灰石在BG的涂层上在沉积，再经烧结获得界面结合强度较好的生物活性梯度陶瓷涂层。

The nano-hydroxyapatite/silk fibroin composite scaffolds were prepared by the commixing process. The, and their in vitro degradation behavior and the biocompatibility was of nHA/SF composite scaffolds were investigated in this work.

应用共混法制备了纳米羟基磷灰石/丝素蛋白复合支架材料，通过体外降解和细胞培养实验研究了复合支架材料的降解特性和生物相容性。

objective:to discuss the method of repairing 526 cases of the cranofacial deformities by hydroxylapatiteand clinical impact.

摘 要 目的：探讨羟基磷灰石在多种原因引起的颅颌面骨性缺损充填中临床应用的可行性和临床效果。

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。