查询词典 reflectance

SO〓〓/M〓O〓 solid superacid was applied to the photocatalytic oxidation of organic pollutants for the first time. Porous SO〓〓/TiO〓 solid superacid catalysts with high specific surface area were prepared by sol-gel method. The photocatalytic degradation of bromomethane was used as model reaction. The influence of impregnation with H〓SO〓 solution on the structure of catalysts and their photocatalytic performance was systematically studied by using X-ray diffraction, X-ray photoelectron spectroscopy, N〓 sorption analysis applying BET method, UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, O〓-TPD and photocatalytic activity measurement. The acidity of TiO〓-based catalysts was investigated by Hammett indicator method, NH〓-TPD and IR spectra of pyridine adsorbtion. The mechanism of superacidifing effects on photocatalytic performances such as the photocatalytic degradation rate of bromomethane, apparent kinetic constant and apparent quantum efficiency was discussed.The results indicated that SO〓〓 is combined with metal ions of TiO〓 in a chelating bidentate mode.

本文首次将SO〓〓/MxOy型固体超强酸催化剂用于光催化氧化有机污染物研究，采用溶胶-凝胶法制备了具有多孔性和大比表面结构的二氧化钛基固体超强酸光催化剂SO〓〓/TiO〓，以光催化降解溴代甲烷为模型反应，系统地研究了H〓SO〓浸渍处理对催化剂表面酸性及其气相光催化性能的影响，结合XRD、BET、XPS、FTIR、Hammett指示剂法、吡啶吸附红外光谱、NH〓-TPD、O〓-TPD、紫外可见漫反射光谱等多种表征手段，深入地讨论了超强酸化对TiO〓的改性机理，阐明了引起SO〓〓/TiO〓超强酸催化剂光催化降解溴代甲烷的转化率、表观反应速率常数和表观量子效率变化的本质原因。

Finally, we used "ConoScope" to measure the optical properties of fabricated Ch-LCDs, such as reflective spectra, reflectance, contrast ratio, and viewing angle.

最后，我们使用&ConoScope&来测量制造的胆固醇液晶显示器的光学性质，例如：反射频谱、反射率、对比和视角分布。

Fourier Transform Infrared and Horizontal Attenuated Total Reflectance techniques were used to obtain the FTIR of semen cuscutae (the seed from Cuscuta chinensis lam) and Japanese dodder seed (the seed from Cuscuta japonica Choisy). The similar features between the semen cuscutae and Japanese dodder seed are extracted by continuous wavelet transform.

采用水平衰减全反射傅里叶变换红外光谱法测定了同属种子植物中药材菟丝子及金灯藤的FTIR，运用基于连续小波多分辨率分析法对吸收较为相似的菟丝子及金灯藤的FTIR进行特征提取。

A new method for analysis of finish of diacetate cellulose tow by diffuse reflectance of near infrared spectroscopy was investigated.

研究了应用近红外漫反射技术测定二醋酸纤维丝束中的外油的新方法。

ABSTRACT Objective To apply near infrared diffuse reflectance spectrophotometry and chemometrics for the quantitative analysis of azithromycin dispersible tablets.

目的 应用近红外漫反射技术和化学计量学的方法对阿奇霉素分散片进行定量分析。

Near-infrared diffuse reflectance spectrometry method can be used in classification and identification of Gryllotalpa.

近红外分析法可应用于蝼蛄种的分类以及蝼蛄药材的分析、鉴定。

In this paper, the main features of endoscopic image are analyzed and homomorphic systems based on the illumination-reflectance model are briefly presented. Then, principles and realization of the model are introduced and expression of the filter function of homomorphic systems is addressed.

本文首先分析医用电子内窥镜图象的主要特点，提出基于照明反射模型的同态滤波方法，接着在简要介绍模型的原理、实现过程和特点的基础上，给出了适用的滤波函数模型和表达式；最后，将处理结果和其它图象增强方法相对比。

In comparison to the process simply using a Hall ion source for the IBAD, the coating has a more compact and uniform structure and a better property in polishing. After surface modification, the surface roughness of the substrate is reduced to 0.635 nm which is the same as that of the S-SiC substrate, also the surface reflectance is obviously enhanced to that of the fine polished zerodur glass.

测试结果表明：与单纯霍尔离子源辅助方法相比，该工艺方法制备的Si改性涂层生长得更加致密、均匀，抛光特性良好；改性抛光后表面粗糙度降低到0.635 nm，达到了S-SiC基底的水平；改性后RB-SiC基底的反射率明显提高，达到了抛光良好的微晶玻璃的水平。

The aim was to put forward a new method for the detection of indigotin and indirubin contents in compound indigowoad root granule by using near infrared reflectance spectroscopy.

［目的］提出一种用近红外光谱技术快速检测复方板蓝根颗粒中靛蓝和靛玉红含量的新方法。

The hybrid composite PW11Co/PAMAM was characterized by FT-IR, UV-Vis diffuse reflectance spectra, XPS, XRD and TG/DTA, indicating that the PW11Co was chemically anchored to PAMAM. The morphologies of the title composite were characterized by scanning electron microscopy and transmission electron microscopy. The catalytic activity was evaluated by oxidation of isobutyraldehyde to isobutyric acid in MeCN under mild conditions (20 ℃, ambient pressure), showing that the title compound is a more effective and recoverable catalyst than corresponding PW11Co.

通过FT-IR、DR-UV-Vis、XRD、TEM、SEM、TG/DTA等手段对其进行了表征，并考察了其对异丁醛转化异丁酸的催化活性，实验结果表明，多金属氧酸盐通过配位键与聚酰胺-胺作用形成的无机-有机复合物可望成为一种催化活性高且易于分离和重复使用的多相催化剂。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了