磷灰石

Objective To discuss the role of American coral porous hydroxyapatite artifical ear-bones in the ossicular chain econstruction.

W+9MkodRm 摘要】目的探讨美国珊瑚多孔羟基磷灰石人工听骨在听骨链重建中的作用。

Hydroxyapatite Ca_(10(PO_4)_6_2, HA is the main mineral component of human hard tissues. It has great bioactivity and biocompatibility,and after being implanted, it can form a kind of osteal bond with the organic tissues within a short time.

羟基磷灰石化学式为Ca_(10)(PO_4)_6_2是人体硬组织的主要无机成分，具有良好的生物相容性和生物活性，临床植入后能在短时间内与人体组织形成骨性结合。

Key words］ nano-.hydroxyapatite;bone morphogenetic protein-2;osteofibrous dysplasia

关键词］纳米羟基磷灰石；骨形态发生蛋白；骨纤维结构不良

Abstract］ Objective Approaching the bone formation ability of repairing bone defect by nano-.hydroxyapatite compounding rhBMP-2.Methods There were 9 cases of osteofibrous dysplasia.

摘要］ 目的探讨纳米羟基磷灰石复合rhBMP-2修复骨缺损的成骨能力。

Methods There were 9 cases of osteofibrous dysplasia.We erasioned proc tissue resulting in bone defect through operation,and filled the bone defect by nano-.hydroxyapatite compounding rhBMP-2 completely.We detected liver and kidney function,X-.ray examination to understand information of toxicity,immune reaction and bone reparation by post-.operation follow-.up.

选取9例骨纤维结构不良病例，手术刮除病变组织造成骨缺损，用纳米羟基磷灰石复合rhBMP-2完全填充骨缺损，术后随访分别做肝肾功能、免疫学指标检测和X线片检查，以了解材料对人体有无毒性、免疫反应和骨修复情况。

Objective To discuss the osteogenous mechanism, the expression of image, the indication and the main problems of calcium phosphate ceramics.

目的 通过临床应用多孔双向羟基磷灰石人工骨，讨论其成骨机制、影像学表现、适应证和存在的问题。

To investigate a new method of preparing the PCHA bone cement, and to test its physicochemical properties, and to evaluate its degrading, osteogenous ability and compressive strength.

目的 探讨原位固化制备多孔生物材料的新方法；制备多孔碳酸化羟基磷灰石骨水泥；完成PCHA骨水泥的理化性能检测；验证PCHA的降解性能、成骨活性和强度变化。

METHODS Segmental, 1 cm osteoperiosteal defects were produced in both radii of 12 rabbits. One side was covered with hydroxyapatite/polylactic acid membrane encapsulated as a tube. The contralateral side served as an untreated control. Healing courses were detected by radiographic and histologic examinations.

采用新西兰大白兔为实验对象，将兔桡骨制成1cm缺损，一侧用羟基磷灰石／聚乳酸膜包绕缺损，另一侧作为对照，通过X线片、大体观察及病理检查等观察两侧桡骨愈合情况。

In the detrital zircon sample FH4, which was collected from lower sandstones of the Fanghushan Formation, the oldest sedimentary strata of the Hefei Basin. HP-UHP mineral inclusions such as coesite, omphacite, phengite and melt inclusions, and other minerals like apatite, quartz, feldspar, white micas were identified by means of micro-laser Raman spectrometer and electron probe.

防虎山组的下部砂岩地层是合肥盆地最古老的中生代沉积地层，在样品FH4中选出了碎屑锆石，通过显微激光拉曼光谱、电子探针的研究发现，锆石中含有柯石英、绿辉石、多硅白云母等典型的高压－超高压矿物包裹体、熔体玻璃包裹体以及磷灰石、石英、斜长石、白云母等矿物包裹体。

Coesite + garnet + omphacite + rutile and coesite + phengite + apatite in zircons from phengite-bearing rutile quartz eclogite.

金红石石英榴辉岩锆石中保存的典型超高压包体矿物组合为柯石英+石榴石、柯石英+石榴石+绿辉石+金红石和柯石英+多硅白云母+磷灰石。

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。