纤维

The internal and external development of p -aromatic polyamide fiber , particularly poly ( p -phenylene tereph-thalamide) fiber, was introduced from the aspects of fiber varieties, output, properties and advanced composite materials reinforced with this fiber.

介绍了对位芳香族聚酰胺纤维特别是聚对苯二甲酰对苯二胺纤维的国内外发展情况，包括纤维品种、产量、性能和该类纤维作为先进复合材料骨架的发展情况。

Microstructural observation revealed that a lot of epitaxial growth fibrous AlN polytype occurred in matrix. Y_2O_3 seems to act as a densifier for in-situ formation material and as medium for growth of fibrous polytype. SiO_2 is the growth promoter for fibrous polytype. The occurrence of fibrous polytype may increase the strength and toughness of AlN ceramic composite material.

实验结果表明，AlN-Y_2O_2-SiO_2系陶瓷复合材料的抗弯强度和断裂韧性较AlN陶瓷均有大幅度的提高，微观结构观察发现基体中存在大量共生的纤维状AlN多型体(27R，21R)，系统中Y_2O_3不仅是原位生长复合AlN材料的致密剂，而且是纤维状多型体生长的媒介，SiO_2，是纤维状多型体生长的助生长剂，基体内纤维状多形体的存在提高了AlN陶瓷的强度和韧性。

Results Trunk neural crest stem cells were successfully isolated and cultured. The immuocytochemcal result showed that the cells were nestin-and P75-positive. Trunk neural crest stem cells grew through adhering to chitosan fiber after inoculation. Under an electon microscope, the spindle-shaped trunk neural crest stem cells were proliferated and migrated along the fiber. The cells arranged side by side or linked by heads and tails in processes. The ends of S-100 positive cells were flat and expanded, adhering to the fiber as claw-shaped pseudopodium.

结果 采用神经管植块法培养的神经嵴干细胞，免疫细胞化学染色呈现nestin及P75双阳性，将其接种在壳聚糖纤维支架材料上，可见神经嵴干细胞贴附于壳聚糖纤维上生长；S-100免疫细胞化学染色显示，S-100阳性细胞突起的末端呈扁平状膨大；扫描电镜显示，壳聚糖纤维上的躯干神经嵴干细胞为梭形，呈现"端对端"、"肩并肩"排列，伸出爪形伪足贴附于壳聚糖纤维上。

We also elaborated upon the relations between immediately adjacent fibers and loadings、interfacial bonding、residual stress、matrix parameters and material elastic properties of two kinds of fibers and the influence on the observed"hybrid effect"in a hybrid composite.

计算了混杂复合材料由于高模量纤维破坏引起的高低模量纤维应力集中系数，详细分析了载荷大小、界面结合强度、残余应力和参与混杂的两种不同纤维及基体的弹性性质等与邻近纤维应力集中的关系及其对复合材料"混杂效应"的影响。

Based on the penetrate -resistance capability of steel-fiber concrete,this paper presents the revisional formula in calculating penetrating depth by introducing toughness index of steel-fiber concrete and considering the influence of shape character and content of steel-fiber.

对钢纤维混凝土抗侵彻性能进行了研究，将钢纤维含量特征参数和钢纤维混凝土韧度的概念引入到侵彻深度计算公式中，在试验的基础上给出了弹体对钢纤维混凝土侵彻深度的别列赞修正计算式。

Nature provides us with an immense variety of short filaments or fibres, Seed hairs, the leaf and stem strands of plants, and the hairs of animal coats are available to us in many forms.

自然界为我们提供了各种各样的短纤维。我们可以使用的有各种形式的籽纤维，植物的茎叶纤维以及兽皮纤维。

We have calculated the mean contact probability of short fibers in uniform system by statistic method, then we selected simple cube lattice model and calculated resistivity of the system by Monte Carlo method.

为了解决短纤维填充的复合材料电阻率的预测问题，我们采用统计的方法计算出均一体系（纤维的几何形状是均一的，纤维在基体中的分布是均一的）中两根紧邻和次紧邻纤维间的接触几率。

In order to achieve the needed length fiber, fractionation of softwood pulp fiber were carried out with a cylindrical hydrocyclone.

纤维长度对纸的质量影响很大，不同长度的纤维适合不同类型的纸张，为了获得所需要的纤维长度，提高经济价值，我们用圆柱形水力旋流器对纸浆纤维进行筛分。

The effect of additives on synthesis of xonotlite fiber with nano diameter is studied using industrial lime and quartz powder,selecting calcium chloride,strontium nitrate,zirconium oxychloride as additives.

采用工业石灰和石英粉，选用氯化钙、硝酸锶、氧氯化锆为添加剂，研究添加剂对合成纳米直径硬硅钙石纤维的影响，结果表明，几种添加剂均对生成硬硅钙石纤维有一定的帮助，加入适量的氧氯化锆添加剂，可以制备出纳米直径的硬硅钙石纤维，氧氯化锆的添加量为Zr4+/(Ca2++Si4+)=0.02时，可获得结晶良好、直径为70～100 nm的硬硅钙石纤维。

For wool fibres, Sirolan TENSOR can supply fibre bundle tenacity and bundle extension , but has some limitations on the analysis of the measured tensile curves of fibre bundles.

采用束纤维强伸性测量方法能够得到羊毛纤维束比强度与纤维束伸长率，但在分析纤维束强力曲线时存在局限性。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。