特性表面

Based on the thermionic emission theory, a method to extract parameters of Si SBD is given in this study. Using this model, we tested the characteristics of devices and extracted the parameters of two kinds of samples. The ideality factor is 1.01 and 2.13 respectively. The zero-field barrier height is 0.70eV and 0.72eV. The surface state density is 5.5×10~(15)cm~(-2)eV~(-1) and 4.3×10~(12)cm~(-2)eV~(-1). The interface oxide capacitance is 9.0×10~(-4)F·cm~(-2) and 5.4×10~(-6)F·cm~(-2). The neutral level of the surface states is 0.81eV and 1.1eV. The reverse breakdown voltage is 101V and 56V.

本研究在热电子发射模型的基础上，建立一种提取Si基SBD器件特性参数的理论模型，基于这个模型，对两种样品的性能进行测试，并计算出退火和未退火样品的理想因子分别为1.01和2.13、零电场势垒高度分别为0.70eV和0.72eV、表面态浓度分别为5.5×10~(15)cm~(-2)eV~(-1)和4.3×10~(12)cm~(-2)eV~(-1)、界面层电容分别为9.0×10~(-4)F·cm~(-2)和5.4×10~(-6)F·cm~(-2)、表面态中性能级为0.81eV和1.1eV、反向击穿电压101V和56V。

The main factor affecting the frequency characteristic were given as the following:the coefficient of corrosion of the Al foil surfaces the figure of the hole of scorrosion,and the character of the oxide film on the surface of the anode and cathode;the fabric of the unimpregnated liner in the capacitor,as well as the resistance and steeping of the working electrolyte and the construction of the capacitor.

影响频率特性的主要因素有：阴极和阳极铝箔表面腐蚀系数的大小及腐蚀坑洞的形状；阴极和阳极铝箔表面氧化膜的性质；电容器中衬垫纸的构造；工作电解液的电阻和浸渍情况以及电容器的内外结构尺寸等。

The fragments of the Forma Urbis present many clues to the would-be puzzle solver: the pattern of surface incisions, the 2D (and 3D) shapes of the border surfaces, the thickness and physical characteristics of the fragments, the direction of marble veining, matches to excavations in the modern city, and so on.

Forma Urbis 的碎片将许多线索呈现给佯为的难题解决者：表面切成开口的式样，2D(和 3D立体)边缘表面的形状，厚度和碎片的身体检查特性，大理石饰以脉纹的方向，对在现代的城市中的挖掘相配，等等。

The adsorptions of SiH_2, SiH_2 with a hydrogen adatom (SiH_2+H) and SiH_2 with two hydrogen adatoms (SiH_2+2H) on the Si (100) surface near SDV structure have been calculated. Three possible sites are found in each case, and the presenting of hydrogen may reverse the relative stability of these sites.

本文首先计算分析了SiH_2、SiH_2+H和SiH_2+2H等硅烷分解后的产物在硅表面的吸附特性，我们发现每种情况都有三个可能吸附的位置，并且表面附着氢原子的出现可以造成这些吸附位置相对稳定性的逆转。

Get high purity DCs by Cultured plastic-adherent monocytes isolated from healthy human peripheral blood with GM-CSF and IL-4 for 7 days. To observe the morphology of DCs by inverted phase contrast microscope ,electron microscope and laser confocal microscope. Analyse phenotype of DCs with flow cytometry. Investigate the endocytosis ability of DCs as a group by Horseradish peroxidase endocytosis assay. To appraise allogeneic mixed lymphocytes reaction of DCs by MTT reduction assay. Analyse the levels of IL-12 and TNF in liquids of cultured medium by ELISA and MTT reduction assay respectively. Soluble antigens of HCCs was obtained by 3 freeze-and-thaw cycles. Biological characteristics of HC soluble antigens pulsed DCs were monitored by flow cytometry. According to MTT reduction assay estimated the cell proliferation of self lymphocytes activated by HC antigens pulsed DCs. Get high purity BCG HSP 70 protein by SDS-PAGE electrophoresis and determined its biological activity with ELISA. Analyse phenotype of antigen pulsed DCs primed by BCG HSP70 with flow cytometry. By MTT reduction assay estimated the cell proliferation of self lymphocytes and the MLR of DC based vaccine. Analyse expression of HLA-DR molecule on surface of HCC lines. The IFN-γ mRNA in lymphocytes after actived by DC vaccine and the Fas-L expression on DC and DC vaccine primed lymphocytes were detected by in situ hybridization and flow cytometry respectively. Specific cytotoxity lysis of T lymphocytes and nonspecific inhibition of liquids in culture medium against HCC lines were also tested. Detect expression of hAFP on four HCC lines with Cell-ELISA. Induce apoptosis of HCCs with actinomycin-D. Interaction of DCs and apoptotic cells was observed under transmission electron microscope. Growth inhibition test of DC against HCC lines was also performed. Establish the nude mouse model bearing human HC xenografts and indentify the characteristic of tumour by histochemistry and immunohistochemistry techniques. Prevent and treat transplanted human HC on nude mouse with Freezing and anabiotic HC specific lymphocytes.

用GM-CSF和IL-4从健康人外周血诱导DC；分别用倒置相差显微镜、电子显微镜及激光共聚焦显微镜观察DC形态；流式细胞术检测DC表型；HRP吞噬实验测定DC的群体内吞能力；MTT法检测同种异体混合淋巴细胞反应；ELISA法和MTT法分别测定DC培养上清液中IL-12和TNF水平；冻融法制备肝癌细胞可溶性抗原；流式细胞术检测负载肝癌可溶性抗原后DC的生物学特性；MTT法检测DC负载肝癌抗原后对自身淋巴细胞增殖的影响；SDS-PAGE制备电泳纯化BCG HSP70并鉴定纯度，ELISA测定活性；流式细胞术检测负载抗原DC经BCGHSP 70活化后的表型；MTT法检测肝癌DC疫苗对自身淋巴细胞增殖的影响和混合淋巴细胞反应；流式细胞术检测肝癌细胞表面HLA-DR表达；MTT法检测肝癌DC疫苗对自身淋巴细胞的活化；原位杂交法检测肝癌DC疫苗活化后的淋巴细胞IFN-γmRNA表达；流式细胞术检测DC和肝癌DC疫苗活化后淋巴细胞表面Fas-L；MTT法分别检测肝癌DC疫苗活化的淋巴细胞和其培养上清对肝癌细胞的特异性杀伤和非特异性抑制作用；Cell-ELISA检测人肝癌细胞hAFP表达；MTT法检测负载AFP表位肽和凋亡肝癌细胞DC对自身淋巴细胞增殖的影响；ELISA法和MTT法分别测定活化后淋巴细胞培养上清中TNF和IL-12水平；肝癌细胞凋亡的诱导和检测；DC吞噬凋亡肝癌细胞后的电子显微镜观察；DC对肝癌细胞的生长抑制试验；人肝癌裸鼠皮下移植瘤动物模型的建立及其组织学和免疫组织化学鉴定；DC及肝癌特异性淋巴细胞预防和治疗人肝癌裸鼠皮下移植瘤；冻存和复苏后的肝癌特异性淋巴细胞预防和治疗人肝癌裸鼠皮下移植瘤。

Simple method is described to functionalize the surface and to modify the structures of multi-walled carbon nanotubes grown on silicon substrates using chromium trioxide (CrO3) solution.

bstract 采用铬酸溶液对碳纳米管进行后处理，旨在修饰碳纳米管的表面形态及改变碳纳米管的表面结构，进一步增强碳纳米管的场发射特性。

A simple method is described to functionalize the surface and to modify the structures of multiwalled carbon nanotubes grown on silicon substrates using chromium trioxide (CrO3) solution.

采用铬酸溶液对碳纳米管进行后处理，旨在修饰碳纳米管的表面形态及改变碳纳米管的表面结构，进一步增强碳纳米管的场发射特性。

A simple method is described to functionalize the surface and to modify the structures of multi-walled carbon nanotubes grown on silicon substrates using chromium trioxide (CrO3) solution.

采用铬酸溶液对碳纳米管进行后处理，旨在修饰碳纳米管的表面形态及改变碳纳米管的表面结构，进一步增强碳纳米管的场发射特性。

We present a simple method to functionalize the surface and to modify the structures of multi-walled carbon nanotube grown on silicon substrates using argon plasma. The as-grown CNT films prepared by thermal chemical vapor deposition were treated with Ar plasma.

在此研究中使用非反应性的Ar电浆子蚀刻，处藉由热化学气相沉积法在矽基板表面所积的多层米碳管，并观察处过后的米碳管表面型态与结构上的改变及其对场发射特性的影响。

The full length variant-specific surface antigen gene from the isolate of G. lamblia has the common characteristics with other previously identified VSPs.

中国人源蓝氏贾第鞭毛虫滋养体表达的表面变异抗原基因具有与已鉴定的蓝氏贾第鞭毛虫表面变异抗原基因同样的特性。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。