光度

All the physical properties should be identical except for the optical rotations of the two isomers, which are of opposite sign.

这两个异构体除了旋光度有相反的符号之外，其他所有的物理性质都应该是完全相同的。

The results were evaluated by computer-aided image and average optical density analyzed statistically.

利用计算机图像分析得出平均吸光度并进行统计学分析。

Methods The macular pigment optical density was measured in the right eye of 116 adult subjects.

采用异色闪烁光度仪对116例正常香港青年的右眼进行黄斑色素密度测量。

First, we extract the boundaries between two different materials by weighting with gray-level gradient,and only voxels on these boundaries participate in the generation of each image, so it drastically reduces the rendering time. Second. We think the voxels on boundaries as the mixture of different materials,so in every voxel there is a surface. We use the oriented cube-interpolation technique to get the intersection point of viewing orientation and the surface in the voxel, then compute the surface normal of the intersection point. We use the normal to shade the voxel in order to improve the image quality.

首先，采用灰度梯度加权提取出三维数据场中不同物质间的边界，根据显示的需要只对这些边界上的体元赋予相应的阻光度并进行光亮度合成计算，因而可大大减少计算量，提高显示的速度；将边界上的体元作为不同物质的混合体，采用与方向有关的三线性插值来计算视线方向与体素内等值面的交点，根据交点的法向量进行光照效应计算以提高显示图像的质量；最后用投影成像法显示最终的图像。

Orthochromatic medical X-ray film ; speed ; exposure ; lightsource ; illuminant

感绿医用X线胶片；感光度。曝光；光源；施照光

Results: Absorbance shows good linear relationship to the cell number in the range of 0.25×10^5-2×10^5 cell mL^(-1). The concentration limit for the testing samples without cytotoxicity was 7.812mgmL^(-1). The testing samples significantly inhibited the oversecretion of TNF-α and IL-8 in HL-60 cells stimulated by LPS.

结果：细胞密度在0.25~2×10^5 cellmL^(-1)范围时，吸光度与细胞数呈良好的线性关系；供试液无毒界限为7.8l2mgmL^(-1)；三种给药方式均能显著抑制LPS诱导HL-60细胞释放TNF-α和IL-8，其中供试液与LPS共育时抑制作用最强。

It can measure the concentration of oxalate in urine from the change of absorbances.

根据吸光度的变化可计算出尿液中草酸含量。

In this paper, the characteristics of Polyphenol Oxidase from sweet potato and its control methods were studied by spectrophotometry.

应用分光光度法，研究了甘薯中多酚氧化酶的特性及褐变的控制方法。

Objective: A simple and adequate analysis method is described for the determination of papaverine hydrochloride in blood using the conventional spectrophotometry.

目的：建立紫外分光光度法测定血液中盐酸罂粟碱含量的方法。

Objective To explore the application of ultraviolet spectrophotometer in determining papaverine hydrochloride content in blood and skin and to determine the intradermal content after local external application of papaverine hydrochloride.

目的探讨以紫外分光光度法测量血液及皮肤组织中盐酸罂粟碱含量及外用罂粟碱后局部皮肤组织中的药物含量。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。