标准测定

A linear relationship between peak current and concentration was obtained in the range from 1×10^(-7)~2×10^(-5) mol/L, and the detection limit (signal to noise=3) is 8×10^(-9)moL/L after 4 min open-circuit accumulation.

在1×10^(-7)~2×10^(-5)mol/L浓度范围内，峰电流与浓度呈良好的线性关系，开路富集4 min后，检出限（3倍信噪比）为8×10^(-9)mol/L.2×10^10(-5)mol/L×2-硝基苯酚平行测定8次的相对标准偏差为3.8%。

Mainfactors are as follows: standard solution、 regressive curve、 parallel experiment of sample、 diacetyl monxime's reagent colorimetic method、 spectrophotometer、 sampling , etc .

影响测定结果的分量主要有：标准溶液、回归曲线、样品平行试验、二乙酰一肟分光光度法、分光光度计、取样等。

Serial dilutions of chicken samples showed a parallel inhibition curve to that of the standards.Plasma PRL concentrations of samples from hens at different reproductive states measured by this assay revealed significant differences and rational changing trends.

母鸡血浆样品倍比稀释产生的结合抑制曲线与标准曲线平行；测定不同繁殖状态母鸡血浆样品chPRL显示出显著差异且变化规律符合繁殖活动的变化。

The variation scope of standard curve parameter of 12 groups of RIA tests for the eight kinds of pituitary and gonad hormones was basically controlled under 15%.

这8 种垂体性腺激素12 批 R I A 测定的标准曲线参数的变异范围基本控制在15 ％以内。

Objective: To investigate the application and criteria of intraoperative parathyroid hormone assay during surgery of secondary hyperparathyroidism.

目的：探讨甲状旁腺激素测定在继发性甲状旁腺功能亢进手术中的应用和标准。

In the best condition of headspace and chromatogram, the mensuration of aquatic trace volatile can get a satisfaction result such as chloroform , carbon tetrachloride , trichloroethylene and perchlorethylene, all relativity standard deviation RSD is less than 4%,all the correlation coefficient R is larger than 0.99, and the relative error is less than 3%.

在选择最佳的顶空和色谱条件下，测定水中痕量挥发物三氯甲烷，四氯化碳，三氯乙烯和四氯乙烯可获得令人满意的结果，相对标准偏差RSD均小于4%，相关系数R均大于0.99，相对误差小于3%。

He method of microwave heating was used to determine the permanganate index of different water sample.

利用微波加热方法测定了不同水样中的高锰酸盐指数，讨论了微波功率、时间、酸度等条件对分析结果的影响，并与标准方法相对照，用t－检验法及 F－检验法检验，均没有明显差异

With chlorobenzene used as the solvent,phenazine as the internal standard,the content of anthracene in crude anthracene is determined by the internal standard method.

结果表明，粗蒽中各组分能很好地分离，并定性出11个组分。该法具有简便、快速、准确、操作简单等特点。所测定的结果有良好的准确度和精密度，样品的回收率为98.43%~100.73%，相对标准偏差为

This method was applied to the determination of phosphorous in graphite-like materials.

方法应用于类石墨中磷的测定，回收率为96%~104%，相对标准偏差小于4.0%(n=6)。

A new method for measuring surface area of flatfishes was presented in this paper. Digital camera is used to capture digital images of flatfishes with a background of standard plotting paper, image processing softwares (Photoshop CS2 or Adobe Acrobat Professional) are used to get pixels per square centimeter and the pixels of flatfishes, then surface area of flatfishes can be calculated by these data. Compared with traditional method, results of surface area measuring of 30 turbot revealed that relative errors of Photoshop Method and Acrobat Method were －4.40% to 3.08% and －1.83% to 1.30%, respectively.

提出一种快速、准确测定鲆鲽类体表面积的新方法，利用数码相机拍照获取带有标准坐标纸背景的鲆鲽类鱼体数码图像，采用图像处理软件Photoshop CS2和Adobe Acrobat Professional分别获得单位背景面积和鱼体图像的像素数，通过两者的比例计算出体表面积。30尾大菱鲆体表面积的实测表明，与传统计数方格面积法的测量结果相比，Photoshop法相对误差为－4.40%~3.08%，Acrobat法相对误差为－

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。