查询词典 nano

The silicon germanium oxide composite nano line produced in the method has the properties of good fluorescence activity, large specific surface area, adjustable length and thickness; thus the silicon germanium oxide composite nano line is expected to be applied to a plurality of fields such as advanced catalyst design, biological fluorescence label, nano component assembly, microscopic conduction and synthesis of advanced optical, electrical and magnetic material and has potential application value.

通过该方法制备的硅锗氧化物复合纳米线具有很好的荧光活性、大的比表面积以及粗细、长短可调控的性质，因此这种硅锗氧化物复合纳米线有望在许多领域例如先进催化剂的设计、生物荧光标记、纳米器件组装、微观传导以及先进光学、电学和磁学材料的合成中有潜在应用价值。

The method takes amorphous silica as silicon source and by the steps of soaking, baking, Fe nano particles is implanted, amorphous silica implanted into Fe nano particles and Alpha germanium oxide are mixed and grinded, the obtained mixture is gas-solid treated by organic amine, so as to obtain the silicon germanium oxide composite nano line.

该方法是以无定型氧化硅作为硅源，通过浸泡、焙烧植入铁纳米粒子，再将植入铁纳米粒子的无定型氧化硅和α氧化锗混和研磨，通过有机胺的气-固相处理，最终获得硅锗氧化物复合纳米线。

Employing different dispersing technology, applying anatase nano-TiO2、antibacterial powder to normal interior latex coating to manufacture nano-modified latex coating. The results of performance testing showed that the additive of nano-powders can evidently imrove the latex coating's quality, such as restraining bacterium、sterilizing bacterium and degrading all kinds of bad organic matters, at the same time do not reduce other performances.

采用不同的分散工艺，将抗菌粉加入普通内墙乳胶漆制得纳米抗菌内墙乳胶漆，对其性能研究的结果表明，纳米粉体的引入可以在保持其原有功能的基础上，赋予内墙乳胶漆新的功能，即光催化降解甲醛等有害有机物、抑菌杀菌等。

In chapter three, various theories and experience on the dispersion of nano-powders proposed by former researchers were generalized and reviewed. Technical standards and experimental process for determining technological parameters were suggested for the dispersion of nano-scaled metal oxides in aqueous medium according to their surface wettability, surface charge, the dependence of surface charge on pH and the compatibility of surfactants with pH and pH adjusting agents. Based on these suggested standards and experimental method, highly stable and dispersive aqueous suspensoid of nm-ZnO, nm-TiO〓, nm-Co〓O〓 and nm-MnO powders were prepared successfully and surface modification on these nano-powders was also achieved.

本文第三章通过大量的文献调研，归纳总结了前人在纳米粒子分散技术方面的理论和经验，并在此基础上根据纳米氧化物粉体的表面润湿性、表面电性及其与分散介质pH值的关系、表面活性剂及其与pH调节剂的配伍关系设计了纳米氧化物水分散体系的工艺规范以及确定工艺参数的通用实验步骤，成功地制备了纳米氧化锌、纳米二氧化钛、纳米氧化钴和纳米氧化锰的高稳定分散悬浮液并实现了干粉体的表面改性，为纳米材料在氧化锌压敏电阻中的应用创造了第二个前提条件。

However, there are always dispersed particles of capsulation structure in PBT/ E-MA-GMA/nano-CaCO3 when mixed directly with E-MA-GMA and nano-CaCO3 together or mixed nano-CaCO3 capsulated by E-MA-GMA.

SEM分析发现，在高的PC用量时，PC分散相在PBT/PC/E-MA-GMA体系中不再呈近似球形的颗粒分布，而是呈现出极不规则的近似条状或片状的结构形态，且局部区域有形成连续相结构的趋势。

The preparation method is characterized in that:(1) at minus 10 DEG C to 10 DEG C, a chloroauric acid solution with a certain concentration is added into a nano-Pt/C catalyst by ultrasonic or stirring mixture and the atomic ratio of Pt to Au is controlled between 18:1 and 5:1;(2) a small amount of monohydric alcohol or dihydric alcohol or trihydric alcohol of C1-C3 is added and is stirred at minus 10 DEG C to 10 DEG C for 10 min to 5h, so as to prepare the carbon-loading Pt-Au bimetallic nano electro-catalyst;(3) if necessary, the catalyst obtained by the step (2) is treated for 0.5 to 4h at high temperature ranging from 100 DEG C to 700 DEG C in the inert or reducing atmosphere, so as to adjust and control the grain size of the Pt-Au bimetallic nano electro-catalyst.

本发明涉及了一种高稳定性碳载Pt-Au双金属纳米电催化剂的制备方法，其特征在于：(1)在-10～10℃中，将一定浓度氯金酸溶液加入到纳米Pt/C催化剂中经超声或搅拌混合，控制Pt∶Au的原子比为18∶1-5∶1；(2)添加少量C 1 -C 3 的一元、二元或三元醇类，在-10～10℃下搅拌10min-5h，制备了碳载铂金双金属纳米电催化剂；(3)视需要，可将步骤(2)得到的催化剂在惰性气氛或还原气氛中经100～700℃高温处理0.5-4h，可调控Pt-Au/C双金属纳米催化剂的粒径。

CuS and CdS nano-particulate films were obtained with these two methods, and some interesting phenomena were observed: under the Gibbs film formed by CTAB, CuS nano-rods were obtained at the oil/water interface, and disklike aggregates of CdS nano-crystals were obtained at both the air/water and oil/water interfaces; under the Langmuir film formed by NaAOT at air/water interface, disk-like aggregates of CdS were also obtained.

利用此两种反应技术，制备了CuS和CdS颗粒膜，并研究了它们的一些光电性质；在Gibbs膜下，得到了棒状CuS纳米晶。由发现的表面活性剂形成的带状物，提出棒状CuS晶体是以带状聚集体为模板形成的；在液-液、气-液界面Gibbs膜下反应中，发现CdS纳米颗粒的盘状聚集体的形成，这是由于表面活性剂在界面上形成的二维胶束而造成的；在气-液界面上Langmuir下的反应中，也发现CdS盘状晶体的生成。

The biomechanical tests showed that two kinds of artificial bones had not significant difference on compressive strength and Young\'s modulus(P＞0.05),while the flexural strength of nano-nacre artificial bone was less than the control group(P＜0.05).3.The results of CCK-8 showed that the difference were not significant in each group,the proliferation of osteoblast reached the peak at the 5th day;7 days after being co-cultured,the total protein content of study group was higher than control group and blank group(P＜0.05),while the difference between control group and blank group was not significantP＞0.05The difference of alkaline phosphatase activities among three groups was not significant(P＞0.05The SEM view showed that osteoblast attached and grew well in two kinds of artificial bone.4.X-ray photography showed that two kinds of powder started to degrade in 2 weeks;this phenomenon became more appear in 4 weeks,nano-nacre powder degraded faster than micron-nacre powder,while the hole shadow was easy to be found;in 8 weeks,all the femoral holes recovered and returned to normal bone mineral density in all groups.Analysis of tetracycline fluorescent double marks in the hard tissue grinding slices indicated that new bone grew fastest around the bone defect area in study group,while most slowly in blank groupP＜0.05 SEM(scanning electron microscope observation showed that nano-nacre powder degraded more quickly.The same result can be found through the demineralized sections morphometric analysis,and both of the composite artificial bones made from those two kinds of nacre powder had the good connection with the adjacent tissue in rats body without apparent inflammatory response.5.X-ray photography showed that rabbit\'s bone defects healed faster in study group since NNAB implanted than in control group since MNAB implanted.At 24 weeks after operation,bone density in radial defects had nearly accessed to the normal area,while lower in control group,and turned up nonunion in blank group;The checking of BMD showed that results in study group were higher than those in control group at 8,16 and 24 week(P＜0.05), and the difference between the BMD values in study group at 24 week and those in blank group was not significant(P＞0.05).The gross specimens showed satisfactory histocompatibility both in study group and in control group,with bone tissue growing from two sides into the center of implanted materials; Normal slices in HE stain and hard tissue grinding slices in Stevenel\'s blue/Van Geison\'s picro-fuchsin stain showed that the bone growth tendency was better in study group than that in control group,and the medullary cavity had been penetrated to the implanted materials in study group at 24 week;Analysis of tetracycline fluorescent double marks in the hard tissue grinding slices indicated that new bone in both groups grew fastest 8 weeks after surgery,while slow down at 16 week.

纳米珍珠层/消旋聚乳酸复合人工骨与微米珍珠层/消旋聚乳酸复合人工骨分别与成骨细胞共培养后，其各时间点CCK-8法检测值与空白对照无显著差异(P＞0.05)，成骨细胞均在第5天达到增殖高峰期；培养7天后，实验组细胞蛋白含量高于对照组及空白组(P＜0.05)，后两者之间则无显著差异P＞0.05碱性磷酸酶活性在三组间均无显著差异(P＞0.05电镜下可见成骨细胞在两种人工骨上都有良好生长贴附能力。4.X-ray显示两种粉体在大鼠股骨骨洞植入第2周时都开始出现了降解，第4周时更为明显，纳米珍珠层粉较之微米珍珠层粉降解更快，而空白对照组骨洞阴影仍可见，至8周时，则所有组骨洞均己闭合修复，X-ray下已不可见原钻孔痕迹，恢复正常骨质密度；硬组织磨片四环素荧光双标记结果显示纳米珍珠层粉植入组较其余两组在骨缺损区周围新骨生长速度更快，空白组速度最慢P＜0.05电镜观察及常规脱钙切片亦可见到纳米粉体降解较快；由以上两种原材料制得的纳米珍珠层/消旋聚乳酸复合人工骨与微米珍珠层/消旋聚乳酸复合人工骨在大鼠体内均与周围组织结合良好，无明显炎症反应。5.X-ray显示纳米珍珠层/消旋聚乳酸复合人工骨植入兔桡骨缺损区后其骨愈合速度较对照组微米珍珠层/消旋聚乳酸复合人工骨植入的快，至植入术后24周，实验组骨缺损区接近正常骨密度，对照组骨缺损区密度较低，空白组则呈现骨不连状态；骨密度测量结果显示术后8周、16周、24周实验组的骨密度值高于对照组(P＜0.05，24周实验组的骨密度值与术前所测得的正常值无显著性差异P＞0.05动物取材大体所见均显示组织相容性良好，骨组织逐渐由植入材料两端向中央生长；常规切片HE染色及硬组织磨片Stevenel\'s blue/Van Geison\'s picro-fuchsin联合染色均可见实验组骨缺损区长势优于对照组，至术后24周，实验组骨髓腔与材料已呈相交通状；硬组织磨片荧光显微镜下观察，两组材料在术后8周处于骨生长最快速时期，16周时速度开始减慢，术后4、8、16周时实验组的新骨生长速度均较对照组的快

In Chapter 1, nano technology, nano materials, nano particles are introduced.Especially, the synthesizing methods of QDs are reviewed. In Chapter 2, CdSe nanoparticles capped with CdS were synthesized inaqueous solution using 2-mercaptoethanol as stabilizer.

本文第一章，简单介绍了纳米科技，纳米材料，纳米微粒及其在分析化学中的应用，并着重说明了纳米微粒制备的各种方法。

In terms of physical-chemical conditions of ore deposits and nano-theories and nano-effects, in connection with themodynamics discussion on Au migrational mode, this paper first time points out that Au is migrated chiefly in the form of nano-particle natural gold in ore-bearing fluid.

3根据金成矿的物理化学条件计算，引进纳米理论和纳米效应，联系Au迁移形式的热力学讨论，首次提出本区金矿成矿流体中Au主要以纳米微粒自然金形式迁移，但在地壳中的物理化学条件下可能部分呈金-硅配合物和金-硫配合物形式在一定范围内迁移

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷