其纤维

Increasing the calcining temperature at 1500℃ 5h, the morphologies of the product became the big and wide vermiform-fiber form particles, the length was about 2.5 μm, and the width was about 700 nm. In addition, the vermiform-fiber form particle could be found in the filtrated precipitate with the additional ammonium sulfate. If the ratio of ammonium sulfate to alum is above 1, the vermiform-fiber form particle was formed. After calcined at 1500℃ 5h, the particle grow up to 2μm. Adding ammonium sulfate was also reduced the particles size of alumina because the surface area of the products was increased by increasing the quantity of ammonium sulfate.

在明矾与氨水沉淀物经过滤后再额外添加不同硫酸铵的比例，1200℃ 1hr煅烧后，发现添加硫酸铵比例在1以上，其型态亦为蠕虫状纤维，当以1500℃ 5hr煅烧，蠕虫状纤维型态粒子亦变为又大又胖，其粒子尺寸长度约为 2 μm 宽度约为 500 nm；且将煅烧1200℃ 1hr测其比表面积值，会随著硫酸铵的添加量增加，粉体的表面积会增加且粉体变细，添加硫酸铵比例为 4 者所得粉体粒径最小，从比表面积所得结果估计约 150 nm 。

The results are as follows: 1The collagenous fibers are arranged in a crass-crossed network of three dimentions. The network in an area of less than 500 μm is like a small board called a microboard. All microboards anastomose each other, forming a microboard network; 2The so-callcd collagenous fibers or lamellae about 4—9 μm thick under the LM are really th...

结果表明：①胶原纤维排列成三维交叉网状結构，后者在约500μm范围内呈板状，称微板，微板相互吻合成微板网；②在LM下所见的厚约4—9μm的"胶原纤維"或"板层"，实际是微板网的垂直切面，⑧文献中的板层结构TEM照片实为其网状结构的一部分，④在胶原纤维之间有少量分支交错的细小纤维，可能是弹性纤维。

In order to research the firer type effect on the impact behavior, the flexural impact performance of concrete reinforced with natural cellulose (Buckeye Ultra-Fiber 500), steel fibers and hybrid fibers were investigated systematically. The initial-crack impact life, the failure impact life and impact ductility are analyzed with statistic analysis method.

为了研究不同纤维对混凝土冲击性能的影响，对天然纤维素纤维、钢纤维及混杂纤维混凝土的抗弯冲击性能进行了系统的试验研究；采用数理统计方法对其初裂冲击次数及破坏冲击次数进行了分析。

This experiment has prepared the compound material of fiber reinforced caoutchouc by using the dry compounding process with short glass fiber and C fiber,studied the impacts on tensile strength,elongation at break, tearing strength,Shaoshi strength due to the different fiber type and the addition,as well as compared the property of two kinds of fiber reinforced compound material.

采用了短玻璃纤维及C纤维干法混炼工艺制备了纤维增强天然橡胶复合材料，研究了纤维种类及添加量对其拉伸强度、断裂伸长率、撕裂强度、邵氏硬度的影响，并且就两种纤维增强的复合材料性能进行了对比

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。

The ZTX 99 HSHM-PE fiber is one of three major hi-tech fibers (specifically the carbon fiber, the armied fiber and the HSHM-PE fiber) and the toughest of all and its basic features are as follows

ZTX 99高强高模聚乙烯纤维是当今世界三大高性能纤维(碳纤维、芳纶和高强高模聚乙烯纤维)之一，也是目前世界上强度最高的纤维，其基本特性为

Objective: To explore the mechanisms resulting in the recurrence of urethral scar which make urethral strictures difficult to be cured, a series experiments were conducted to find potential effective factors involved in urethral scar formation and degradation, including the studies of extracellular matrix component of urethral stricture scar, the characteristics of urethral scar fibroblast, and the effects of urine on urethral fibroblast in vitro, as well as the studies to compare the difference of collagenase activity, type Ⅰ collagen and tissue inhibitor of metalloproteinase-1 (TIMP-1) in the tissues and cultured fibroblasts from normal urethra and strictured urethra respectively, and the studies to investigate the effect of antisense TIMP-1 oligodeoxyonucleotide on cell proliferation and collagenase activity of urethral scar fibroblast.

中文题名尿道瘢痕基础研究副题名胶原酶活性，TIMP-1的表达及其反义基因治疗外文题名 Experimental study on urethral scar-activity of collagenase，expression of TIMP-1，and antisense TIMP-1 gene transfection of urethral scar fibroblast 论文作者黄翔导师杨宇如教授学科专业外科学研究领域\研究方向学位级别博士学位授予单位四川大学学位授予日期2002 论文页码总数104页关键词尿道手术瘢痕胶原酶成纤维细胞尿道瘢痕馆藏号BSLW /2003 /R699 /12 目的：研究尿道瘢痕的细胞外基质的组成，尿道瘢痕成纤维细胞的生物学特性以及尿液对其生长的影响；比较胶原酶活性，金属蛋白酶组织抑制因子-1（TIMP-1）以及Ⅰ型胶原含量在尿道瘢痕和正常尿道组织及体外培养的成纤维细胞中的差异；研究反义TIMP-1寡核苷酸对尿道瘢痕成纤维细胞增殖以及胶原酶活性的影响。

The results show that Fe0.13[Co20Ni80]0.87 alloy fibers are characterized with thin diameters between 0.3 and 2.0 μm, with high aspect ratio, dense and smooth surfaces. The crystalline size of the alloy fibers are mainly influenced by the thermal reduction temperature and are in the range of 20 to 50 nm with a corresponding reduction temperature range of 300 to 700 ℃. The magnetic properties of the alloy fibers are largely affected by the carbon content and crystalline sizes of the alloy fibers. With increasing thermal reduction temperature, the coercivity decreases while the saturation magnetisation value of the alloy fibers dramatically increases at lower reduction temperatures. The alloy fibers prepared at reduction temperature of 700 ℃ have a saturation magnetisation value of 120 Am2/kg and a coercivity value of 10.4 kA/m, respectively.

结果表明：Fe0.13[Co20Ni80]0.87合金纤维的直径为0.3~2.0 μm，表面光滑、长径比大；组成合金纤维的晶粒大小与还原温度密切相关，当温度为300~700 ℃时，晶粒尺寸由约20 nm增加到约50 nm；该合金纤维显铁磁性，其矫顽力主要受合金中C含量及晶粒大小的影响，随制备温度的升高而降低；饱和磁化强度则主要与合金的组分相关，随还原温度的升高和合金纯度的提高而增大；经700 ℃热还原后，合金纤维的饱和磁化强度 m s为120 Am2/kg，矫顽力 H c为10.4 kA/m。

CFS is developed by using Polysulfonamide, cellulose, sepiolite andbrucite fibers as reinforced fibers, using acrylonitrile-butadiene and natural rubberas binders, using calcium carbonate, hydrated magnesium silicate, bolus alba asfiller and agent. This new material's main performances reach or are close to thesimilar products of foreign countries, and fill in the domestic gapes in the field.

首次选用有机芳砜纶纤维、纤维素纤维和无机海泡石纤维、水镁石纤维等为代石棉纤维，以丁腈橡胶和天然橡胶为弹性粘结剂，并加入碳酸钙、滑石粉、高岭土等无机填料和其它配合剂，采用压缩成张工艺成功地研制出具有工业应用价值的CFS，其主要性能指标达到或接近国外同类产品的水平，填补了国内在这一领域的空白。

Three composites of the different fibers with epoxy resin matrix are prepared and the corresponding unilateral fiber reinforced winding ring specimens are fabricated. The mechanical poperties of the composites including tensile strength, modulus and three point interlaminar shear strength are te...

对由PBO纤维与环氧树脂基体复合成型的单向纤维增强环形试样，测试了其拉伸强度、弹性模量和层间剪切强度，结果表明：PBO纤维股纱的拉伸强度比F - 12和Kevlar - 4 9分别高 2 4 4 %和 5 2 8%以上，单向纤维复合材料的拉伸强度分别高约 37 2 %和 92 8%，耐热性也高约 166℃，但PBO纤维与环氧树脂基体的界面粘结性很差，层间剪切强度仅为 2 3～ 2 7MPa 。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。