使变白的

The main object of this research is to investigate synthesis of Cu23Cl Cu and CuO nanoparticles through electrospinning and heat-treated method The research is mainly focused on preparative parameter and the change of heat-treated temperature to form the nanoparticles inlaid in silicon fibers the shape and color change are dicussed First of all to prepare the Polyvinyl butyral and silica dioxide complex nanofiber by electrospinning and then to investigate different heat-treated temperature and reactive time to being an influence on the products The results detected by SEM XRD TEM EDS FTIR combined sol-gel process and electrospinning can prepare Polyvinyl butyral and silica complex nanofiber The experimental result is found when heat-treated temperature is 100~4750C it can produce Cu23Cl nanoparticles; Above 4750C~ 4900C it can produce Cu nanoparticles; Above 450~7000C it can produce CuO nanoparticles And the viscosity is lain between 20~40cp and the sol-gel process time is 3hr it can produce the thinner fibers The average diameter of the fibers are 107 88±21 01nm;Due to the nanoparticles inlaid in the silica fibers the thinner fibers can be inlaid the smaller nanoparticles so this is the result that the experiment is expected To calcine the complex fibers is to produce surface silica fibers contain Cu23Cl Cu and CuO nanoparticles due to surface plasma resonance it make the color of the fibers become yellowish green from light white green turn into the red nuclear finally As the experimental result to utilize sol-gel process combine electrospinning can produce porous silica fibers contain Cu23Cl Cu and CuO nanoparticles

本研究旨在探讨「利用放电纺丝和热处理法来合成Cu23Cl、Cu和CuO奈米粒」之研究，实验著重在制备参数与热处理温度变化对所形成的奈米粒镶嵌在二氧化矽纤维中的形态与颜色变化探讨。首先，利用放电纺丝法制备出聚乙烯醇缩丁醛及二氧化矽之奈米纤维，比较不同的热处理温度与反应时间的改变对产物生成产生影响，进而研究不同热处理温度和时间对生成奈米粒的影响。产物经由SEM、XRD、TEM、EDS和FTIR等仪器分析结果显示，结合溶胶-凝胶法(sol-gel process)和放电纺丝法可产生聚乙烯醇缩丁醛及二氧化矽复合奈米纤维。实验结果发现，若热处理温度在100~4750C下可得到Cu23Cl奈米粒，475~4900C 可得Cu奈米粒，450~7000C以上可得 CuO奈米粒。而黏度介於20~40cp间和溶胶-凝胶时间为3hr时，可产生直径比较细的纤维，纤维直径为107 88±21 01nm；且由於奈米金属颗粒镶嵌在二氧化矽纤维中，直径比较细的纤维，可以得到比较小的奈米金属颗粒，这与实验预期相符。而锻烧此复合物产生多孔的二氧化矽纤维并包含Cu23Cl、Cu和CuO奈米微粒时，由於表面电浆子共震关系，而使纤维颜色由淡白黄绿色变成黄绿色，再变红褐色。由实验结果得知，利用溶胶-凝胶法(sol-gel process)结合放电纺丝法和不同热处理温度，可产生Cu23Cl、Cu和CuO奈米粒镶嵌在二氧化矽纤维。

The basic structure of chromogen in PFBs remains the same, so PFBs have fluorescent properties of traditional FBs. Covalent bonds between chromogen and macromolecule chains enhance their photochemical stability, increase their whitening performance and fluorescence quantum yield.

聚合型荧光增白剂中基本发色团的结构不变，具有传统荧光增白剂的光学性能；发色团与高分子链间的共价键使其光化学稳定性大大增强，增白性能和荧光量子产率显著提高。

Inside the source apply color to develop process in the tooth in formative of, such as four wreath vegetables deposition is in the tooth essence, will make tooth yellow, brown or dark gray, be called four wreaths plain tooths;If containing fluorine in the drinking water is excessive, may also cause fluorine spot tooth, the tooth noodles presents a white chalk color, the palm tree brown spot piece;If the tooth nerve is bad clay-cold, hemoglobin and germ resolve an outcome to combine to also make tooth black.

内源性着色是在牙齿发育过程中形成的，如四环素沉积在牙本质内，就会使得牙齿变成黄色、棕色或暗灰色，称为四环素牙；如果饮用水中含氟过多，也可能导致氟斑牙，牙面呈白粉笔色、棕褐色斑块；如果牙神经坏死后，血色素与细菌分解产物结合也可使牙齿变黑。

Strengthening visual effects of caisson ceiling ,in vertical space .The contrast of painted pattern and large space of inoccupation which mixing the light ,shadow and the emotions, enhanced the enthusiasm atmosphere ,fulfill the space.

疏密的纹饰对比与大块面的留白，使光与影巧妙地结合，溶入诸多的情感，因而大大增强了气氛的煽情，使空间变得有情景，有情绪，人在情景中体验生活，接受一种由外而内的温情呵护，在不自觉中感受到东方气息的人文关怀。

Putting two to eight sheep in front of the incense table andfresh milk, chease, butter, white wine, holy cake, salt, tea, etc,.

然后再敖包前的祭案上，摆上全羊二至八只，两边摆上牧民奉献的全羊、鲜乳、奶酪、黄油、圣饼、白酒、盐茶等红白食品，念一种专门的经文使这些食品变得圣洁后，喇嘛们开始燃放柏叶香火进行烟祭，这是鼓钹大作、号管吹响、法铃齐鸣，香客们不论僧俗尊卑，均大襟铺地，向着敖包三拜九叩，祈祷"风调雨顺、五畜骤增、无灾无病、禄马飞腾"继而将马奶、醇酒泼洒到敖包上，诵读《敖包祭酒词》。

Silica and alumina, to an organic silicone rubber, ShoreA 70, to improve the hardness of silicone rubber material and the results indicated that the addition of silica improved the hardness of the material dramatically, but depressed the heat-resistance markedly; the addition of alumina improved the hardness of the material also, but more loading was needed to achieved the hardness as compared with the silica added materials.

研究发现，添加气相法白碳黑能显著提高硅橡胶的硬度，但使硅橡胶的耐热老化性能明显变差；氧化铝也可以用于提高硅橡胶的硬度，但与气相法白碳黑相比，达到相同硬度时的添加量要大的多；比较而言，通过添加氧化铝获得的高硬度硅橡胶具有较好的综合性能，更能满足电化铝烫印版的制作需要。

Hester looked, by way of humouring the child; and she saw that, owing to the peculiar effect of this convex mirror, the scarlet letter was represented in exaggerated and gigantic proportions, so as to be greatly the most prominent feature of her appearance.

她那又调皮又开心的神情，也同样映现在盔甲的凸面镇中，显得益发夸张和专注，使海丝特·白兰觉得，那似乎不是她自已孩子的形象，而是一个精灵正在试图变作珠儿的模样，&走吧，珠儿，&海丝特说着，便拉着她走开。

three:The fresh carrot squeezes juice, wipe to wash a face sooner or later, after do again use Tu2 You3, the hand of the plant oil lightly taps face, can make the skin become white and smooth, the freckle will also fade away.

方法三：新鲜胡萝卜榨汁，早晚擦洗一次面部，干后再用涂有植物油的手轻轻拍打面部，可以使皮肤变得白而光滑，雀斑也会消退。

I read recently of an ingenious plan put forward by Russian engineers, for making the White Sea and the northern coasts of Siberia warm, by putting a dam across the Kara Sea.

我最近读到一份俄国工程师提出的独出心裁的计划，说是要筑一条坝穿越喀拉海，使白海和西伯利亚北部沿海变暖。

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。