光度

The method for the determination of nickel in stainless steel by rapid spectrophotometric with diacetyldioxime is set up.

建立测定不锈钢中镍的丁二酮肟快速光度法。

Recently various new reagent s and detection methods were used to the photometric detection of niobium.

近年来各种新试剂、新方法的不断涌现，使铌的光度分析有了新的进展。

The capability of scavenging sodium nitrite and disconnecting nitrosamine synthesis with hawthorn extracts by microwave method were determined by spectrophotometry under simulated human gastric juice,and was compared with vitamin C.

通过微波法提取山楂的活性成分，在模拟人体胃液条件下，采用分光光度法测定了不同浓度的山楂提取液对亚硝酸钠的清除能力和对亚硝胺合成的阻断能力，并与Vc进行了比较。

The oxidation of mono-methylhydrazinewith nitrous acid in nitric acid medium was researched.

采用分光光度法研究硝酸介质中单甲基肼与亚硝酸(HNO_2)的反应。

Nonradioactive spectrophotometric HAT assay is an alternative method to the widespread radioactive assay but suffers from drawbacks as lack of sensitivity and accuracy.

非放射性分光光度HAT测定方法虽然可替代广泛使用的放射性检测方法，但缺乏灵敏度和准确性。

Group 1 comprised 370 patients with arterial hypertension and 205 age- and sex-matched normotensive subjects.

对第一组370名高血压患者，205年龄和性别匹配正常血压者作为对照，测量角膜散光度，前房深度和眼轴长度。

According to the results of numerical simulation, the rate constant of BQI hydrolysis k 1 is calculated from the intercept of the line.

以x与最大吸光度Amax所对应的体积流量qVm作图，它满足lgqVm对lg(-4.45+4.72x/xe)是一条斜率接近1的直线。

The results show that the mass density of disc galaxies increases an order of magnitude from the early-type disc galaxies to the later one, oblateness decreases to minimum at Sd,m, and then increases Having excepted SO and IrII, these parameters vary with the type of disc galaxies monotonicly.

早先得出早型盘星系的质量密度要比晚型高一个量级Ⅲ。这是因为所用的质量值是光度质量，早年得到的早型星系的质光比大于晚型星系一个量级。然而后来的工作发现盘星系的质光比大约为同一值嘲。后来有

The feeding and excretion of three little fishes (Hemiculter. leucisculus, Tilapia. aurea and Cirrhinus. molitorelld) was studied and their effect on water quality of Qiankeng reservoir in Shenzhen City Around the topdown effect of fish was also studied. Based on the analysis of their stomach contents, their diet composition was assayed. The three fishes" feeding rhythm in cage and their rate of digestion indoor were looked into, and their daily ration was estimated through the method of daily average fullness index. Using the spectrophotometer, the content of chlorophyll a in the stomach was measured, and the feasibility of taking the chlorophyll a as an index of measuring the feeding of fish on phytoplankton was studied. Adopting the national standard method, the effect of the three fishes" excretion on total nitrogen, total phosphorus, CODMn, pH, turbidity and conductivity coefficient was surveyed. The effect of feeding and excretion offish on water quality was discussed and the results revealed as follows:H.

围绕鱼类的下行效应，本文以深圳茜坑水库三种小型鱼类Hemiculter leucisculus罗非鱼Tilapia.aurea和鲮鱼Cirrhmus.molitorella为研究对象，以胃含物分析为基础，分析了三种鱼类的食物组成；调查了网箱中自然状态下三种鱼的摄食节律，在室内调查了三种鱼的食物消化速率，运用日平均饱满指数法计算出三种鱼的日粮；采用分光光度法测定了鱼体肠叶绿素含量，探讨了叶绿素作为鱼类对浮游植物摄食量衡量指标的可行性；采用国家标准的水质测量方法，测定了鱼类排泄对总氮、总磷、高锰酸盐指数、pH、浊度和电导率的影响量。

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，其它所有的物理性质

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。