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In this thesis we used two types of low-carbon ductile as the basal of low-carbon ductile cast—infiltration, one is as-cast high-toughness pearlitic low-carbon ductile, the other is as-...

用我们自己配制的合金粉末进行低碳球铁表面铸渗合金化后，得到的表面渗层的硬度最高可以达到HRC58，远远高于母体的硬度。

FeSi nanoparticles were synthesized via thermal decomposition of iron pentacarbonyl in the solution of dioctyl ether, stabilizers oleic acid and oleylamine. The TEM images showed that FeSi nanoparticles had cubic shape, but it seemed that the composition was not uniform. According to the EDS results, the Fe:Si ratio of gray-uniform nanopaiticles was almost 1:1, and blacker FeSi nanoparticles contained more Fe atoms. Although FeSi didn't have uniform structure, it still could be proved that the incorporation of Fe and Si existed in a single nanoparticle. All possible structure, lattice, binding, morphology, surface condition would be discussed. These results indicated that perhaps FeSi2 was the main structure of the new products; however, due to incompletely combination and less synthesized time, it might still contain some part of Si and Fe structure. Besides, FeSi nanoparticles preserved the optical properties from Si atoms, but the PL intensity was much lower. The maxima PL peak appeared at 388 nm with the excitation at 300 nm. Their saturation magnetization, remanent magnetization and coercivity were measured by the SQUID, exhibiting their nearly superparamagnetic behavior.

利用热裂解系统可成功将研磨矽奈米粒子及五羰铁结合，制备出铁矽奈米粒子；从穿透式显微镜照片可知其粒子呈现立方体型态，但颜色深浅及组成不均，EDS结果则显示颜色均匀之粒子铁与矽之组成大致为1：1，颜色较深之粒子则含有较高量的铁元素；尽管组成比例并不统一，但单颗粒子同时含有矽与铁两种元素，初步说明铁矽奈米粒子之形成；进行多种结构与表面分析并探讨所有可能之键结、结构及表面元素后，推测铁矽奈米粒子可能以FeSi2之结构形成，并同时包含未重组完成的矽及铁之结构；利用PL分析得知铁矽奈米粒子确实保留矽之放光特性，并在300 nm激发光源下，於波长388 nm处有一最强放光特性峰，但整体发光效益不及研磨矽奈米粒子之结果；最后，利用超导量子干涉磁化仪量测其饱和磁化量、残留磁化量、与矫顽磁力，发现磁滞现象并不明显而几乎呈超顺磁性。

Methods N-vinyl pyrrolidone, the hydrophilic monomer, was grafted onto the surface of silicone breast implants by 60Co radiation.The implants were buried in the bilateral subcutaneous layers of the back of rabbits.The unchanged implants were used as the control group.

利用钴60共辐射的方法把亲水性单体 N-乙烯基吡咯烷酮接枝到硅胶乳房假体表面，改变其表面特性后植入兔的背部，以未经改性的正常假体作为对照组，隔一定时间通过组织切片及CT扫描的方法观察假体周围纤维囊壁的形成情况。

Methods The resinic artificial teeth were deposited with 50nm or 100nm nanometer amorphous diamond film after pretreated with ultraviolet radiation or polarization.The effect of different methods of pretreatment and thickness of nanometer amorphous diamond films on the wearing resistance of resinic artificial teeth was evaluated.

分别用极化和紫外光照射的方法对人工牙进行预处理后，在其表面分别镀制50nm和100nm的纳米非晶金刚石薄膜，通过对其耐磨性能的测试，评价不同预处理方法和不同厚度薄膜对提高人工牙表面耐磨性能的影响。

Results: Follow-up ob servation of living cells revealed that upon the Ti disc there were cells migra ting from the cellular layer and attaching to the rim of it, forming cells bridg es between them, and then more cells were found to attach and orient as the cult ure went on.

结果：活细胞跟踪观察揭示钛片放入细胞层表面后即有细胞自细胞层表面向钛片侧壁移行、贴附，并在二者之间形成细胞桥。

Results: Follow-up ob servation of living cells revealed that upon the Ti disc there were cells migra ting from the cellular layer and attaching to the rim of it, forming cells bridg es between them, and then more cells were found to attach and orient as the cult ure wen

结果：活细胞跟踪观察揭示钛片放入细胞层表面后即有细胞自细胞层表面向钛片侧壁移行、贴附，并在二者之间形成细胞桥。

It is for the first time that Spinacia oleracea ferredoxin immobilized on the surface of the carbon nanotube modified glassy carbon electrode(SoFd-CNT/GC) can undergo effective and stable direct electron transfer reaction.

将来源于Spinacia oleracea的铁氧化还原蛋白(ferredoxin，SoFd)通过吸附的方法固定在碳纳米管表面。红外光谱表明SoFd固定在CNT表面后没有变性。

Technology of laser hardening surface of diesel locomotive camshaft using austenite-bainite nodular-iron instead of 20Cr has been systematically elaborated on,which includes a series of measurements such as mechanism of choosing austenite-bainite nodular-iron and it's pretreatment,ascertaining laser technological parameter,spiry laser scanning strip,designing four-motor control devise using microcomputer and so on.

阐述用奥贝球铁代替 2 0Cr制造内燃机车凸轮轴的激光表面强化的工艺过程，其中包括奥贝球铁的选择、激光工艺参数的确定、螺旋激光扫描带、四联动微机控制装置的设计等。研究表明，用奥贝球铁代替 2 0Cr制造凸轮轴，经激光表面强化后，能获得更均匀的硬度分布和更高的硬度值。

CNTs were first pre-treated using acid solution (HNO3) to obtain CNTs functionalized with carboxylic groups. Subsequently, the stearyl alcohol was grafted onto CNT with the assistance of dehydrating agent, N,N'-dicyclohexyl-carbodiimide. Excellent dispersion in organic solvents such as acetone, THF, and chloroform was found for the modified CNTs (CNT-C18). In addition, the PBS/CNTs nanocomposites were then prepared through simple melt-blending. Mechanical properties, thermal behavior, conductivity of resultant polymer/CNT composites were investigated. The results show that excellent dispersion of nanotubes in the PBS matrices was achieved.

为了增加多壁奈米碳管在复合材料中的分散性，将碳管表面进行化学修饰，首先将多壁奈米碳管浸入HNO3溶液中，进行酸化，使碳管表面带有羧酸的官能基，然后再加入十八烷醇，在温和的条件下，藉由N，N'-二环己基碳二亚胺(N，N'-dicyclohexyl- carbodiimide，DCC)脱水剂脱水，使碳管和十八烷醇之间产生酯基的化学键结，改质后的碳管可以分散在acetone、THF、chloroform…等有机溶剂中，结果显示成功的利用DCC脱水剂完成碳管的改质。

It is found that the surface of Nafion membrane can be rendered more hydrophilic by modification with sulfonic type PFSAS.

在各种类型PFSAS中，只有阴离子型FC-99能有效持久地改善Nafion膜表面的亲水性，而不引起膜的显著溶胀，特别是经FC-99的碱性液处理后膜的表面改性效果更好。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。