材料学

MTT assay was used to evaluate the cytotoxicity of β-TCP/col on the proliferation of PDLCs. PDLCs were cultured on β-TCP/col and observed by scanning electron microscope.β-TCP/col was implated into muscles of nude mice to observe tissue reactions by histologic methods.Ⅱ° furcation involvements models in beagle dogs were established, scaffold and and scaffold with cells and cytokines were implanted into defects. Histologic observation were conducted.

通过 MTT 法测定β-TCP/col 对犬 PDLCs 增殖的影响，在β-TCP/col 上复合培养犬 PDLCs 并进行电镜观察；将β-TCP/col 植入裸鼠肌袋内并进行组织学观察；建立比格犬Ⅱ°根分叉病变模型，分别植入材料、材料/细胞复合体或材料/细胞/细胞因子复合体，进行组织学观察。

With the development of material science,there are more kinds of Modified-Glass ionomer Cement suit for dental clinical practice.

随着材料学的发展，出现了更适于临床应用的改良型玻璃离子水门汀。

Although clad diamond prevent iron family elements from eroding diamond and improve the strength between matrix and diamond, there still are many problems in applying Fe-base formulae. After the adding amount of reinforced elements is determined, the effect of the basic elements of matrix on its comprehensive performance is studied. The results show that while wc content is 15%. Fe/Ni 1: 1, 663-Cu etc 50%, Sintering temperature 920℃, temperature kept time 1. 5 mintues, matrix comprehensive preformance is best.

尽管金刚石表面镀膜隔绝了铁族元素对金刚石的侵蚀和提高了胎体对金刚石的粘结强度，但以Fe代Co还存在胎体的综合机械性能等问题，本文试着从材料学的强化理论出发确定了微量元素的添加量之后，用正交试验设计方法研究了胎体的基本组元WC、Fe/Ni、663—Cu的加入量及烧结工艺对胎体综合机械性能的影响，得出在WC15%，Fe/Ni1：1，663—Cu等其它为50%，烧结温度920℃，保温时间为1.5分时胎体的综合机械性能最优。

Cap. Ramsey: At the Navy War College it was metallurgy and nuclear reactors, not nineteenth century philosophy.

在海军战争学院？A教的是材料学和核子反映器，不是19世纪哲学。

Since then, with developing of manufacturing technology, emerging of new types of materials, researching bio-mechanics in-depth and improving method of prosthesis fixation, protheses' survival rate were continuously improving and a satisfied outcome were obtained.

此后，随着制造技术的进步，材料学的发展，生物力学研究的深入和假体固定方法的改进，人工全髋关节假体的生存率不断提高，手术疗效令人满意。

OBJECTIVE: To introduce material science characteristics and clinical application of bone plate.

摘要目的：介绍接骨钢板的材料学特征及其临床应用现状。

Ultimately, 25 articles were included. We arranged and analyzed material science characteristics, clinical application, advantages and disadvantages of bone plate.

共纳入25篇文献，从接骨钢板的材料学特征、临床应用及其优缺点方面加以整理和分析。

RESULTS: From the material science characteristics, the elastic modulus of bone plate should be close to skeleton so as to reduce stress occlusion effects.

结果：从接骨钢板的材料学特征来看，应使其弹性模量接近骨骼，以减少应力遮挡效应。

The research refers to body engineering science,textile,esthetic and psychology etc.

这一问题涉及人体工程学、纺织材料学、美学、心理学等多个学科。

Similar experiments might be useful for future use in the science of dental materials and in prosthodontics for precision measurements of different character.

类似的实验在牙科材料学和镶牙术中将有可能用于一些不同性质的精密测量。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。