光量测定

Using the formula supplied with the standard absorption curve, determine the amount of sulphur dioxide in the test solution from the absorbance measured.

用标准消光曲线提供的公式，从测量的吸收率来测定测试溶液中二氧化硫的量。

Objective To determine the action spectrum of ultraviolet in chronic actinic dermatitis and further analyze the influence of course of disease and period in the sunlight everyday on the decrease of minimal erythema dose respectively.

目的 测定慢性光化性皮炎的紫外线作用光谱并进一步分析患者病程及日均户外曝光时间对作用光谱最小红斑量降低的影响。

In order to understand its ecological adaptability, Iodimetry which can be measured the oxygen content in the water is undertaken to determine the Elodea nuttallii's light compensation point under the temperature of 10℃、15℃、20℃、25℃ and 30℃.

为了解其生态适应性，采用碘量法测定水中含氧量来研究它在10℃、15℃、20℃、25℃和30℃的温度下其光补偿点的变化。

The RLS method exhibits lower variation in response signal for the same weight of BSA, human serum albumin and γ-globulin and has been successfully applied to the determination of the total protein in human serum samples.

用共振光散射方法对相同量的牛血清蛋白，人血清蛋白和γ—球蛋白进行测定，其相应的信号变化不大。

The research results also pointed out that the complex compound of iodine and amylum is not stable, and has a regular fadding process; the concentration of phosphate buffer solution has a serious inffluence on the fadding effect of the extractive solution of plant leaves.

取一定部位的功能叶，用打孔器取40个叶圆片，研磨加水后离心制得植物材料提取液，取一定量上清液加到3ml含有碘、叠氮化钠和淀粉试剂的反应混合液中，30秒后测定1分钟内吸光值的变化量。

A novel catalytic resonance light scattering method for the determination of traces of formaldehyde in blood plasma was developed. It was based on the fact that potassium bromate reacted with pyronine Y to form association nanoparticles which gave stronger resonance light scattering effect, and formaldehyde can catalyze potassium bromate oxidizing pyronine Y resulting in decreasing of the intensity of resonance light scattering in sulfuric acid.

在稀硫酸介质中，溴酸钾与吡啰红Y能聚集成较大粒径的纳米微粒而使共振光散射增强，而甲醛能催化溴酸钾氧化吡啰红Y而导致体系共振光散射减弱，据此建立了一种灵敏、简单、快速测定血浆中痕量甲醛的新方法。

Several account matters,such as hard adjustment of the telescope,broken of the optical-lever mirror and unclarity of the staffs,on the instrument of measuring Young s modules are analyzed in this paper.

对原有的杨氏模量测定实验仪存在望远镜调节困难、光杠杆镜易碰下打破镜子、刻度标尺不够明亮的问题进行了分析，针对这些问题提出了相应的改进措施，取得很好的效果。

A new catalytic spectrophotometric method for the determinati-on of trace copper is described. This method is based on the oxidation of Phloxine by hydrogen peroxide in ammoniacal medium, catalyzed by copp-er.

本文提出了催化光度法测定痕量铜的新方法，此法是基于萤光桃红在氨性介质中被H_2O_2氧化的反应受到痕量Cu的催化。

Methods: This study investigated 284 coal miners, including 122 with X-ray Category 0 and 162 with Categories 1, 2, and 3, from the medical clinics of a hospital. Spirometric measurement and tests for pulmonary diffusing capacity were conducted on each subject.

本研究自1998年至1999年於矿工内科门诊收集284位资料完整，且其胸部X光片依国际劳工组织尘肺症分类法显现Category 0或Category 1，2或3之单纯尘肺症变化的煤矿工，安排其作肺量测定及肺弥散量检查。

A Photolysis of 5＇-deoxyadenosylcobalamin in neutral aqueous solution and methylcobalamin in neutral and acid aqueous solution has been investigated using pulsed, time-resolved photoacoustic calorimetry in the temperature range of 10-30℃. The resultant enthalpy changes, namely CoC bond dissociation energies for the above cobalamins, 129±17, 163±21 and 176±23kJ/mol, respectively, are consistent with the values obtained by thermolytic kinetic method.

运用光声量热法研究10～30°C温度范围内辅酶〓在中性水溶液中和甲基钴胺素在酸性和中性水溶液中的光解反应，测定了其光解反应的焓变，即Co—C键离解能分别为129±17，163±21和176±23 kJ／mol，这些值和文献中用热分解动力学方法测得的值一致。

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。