查询词典 quantitative determination

This method was applied to the determination of aluminum, silicon, phosphorus, manganese and copper in ferrotitanium standard sample, and the determination results were consistent with the certified values. The relative standard deviation (RSD, n=7) was 0.56%-3.3%, and the recovery of standard addition was 96%-103%.

该法已用于钛铁合金标准样品中铝、硅、磷、铜、锰的测定，测定结果与认定值相符，相对标准偏差(n=7)为0.56%~3.3%，加标回收率在96%~103%之间。

By researching the original analysis method for CaF2 in fluorspar,this paper discovered its shortcomings,determined three main factors for causing CaF2 analysis results to be lower slightly:determination of total Ca contents,determination of CaCO3 as well as calibrating of EDTA standard titration solution.

通过对萤石中 CaF2的原分析方法的研究，找出其中的不足，确定了导致 CaF2分析结果偏低的三个主要因素：Ca的总量的测定、CaCO3的测定以及EDTA标准滴定液的标定，结合国家标准分析方法，对我们正在使用的分析方法进行改进，以解决这些问题。

Selenium and protein contents were analyzed and evaluated in foxtail millet landraces originated from different regions of China. The method for selenium determination was Hydride Generation Atomic Fluorescence Spectrometry, and the method for protein determination was semi-micro Kjeldahl method.

对中国谷子地方品种资源进行硒和蛋白质含量的测定与评价，以了解谷子品种资源中硒和蛋白质含量的变异及其与地理分布的关系，为谷子种质创新和育种提供基础。

Methods: The sample extraction method of total flavonoids, including water bath water bath reflux extraction and ultrasonic extraction method, the sample determination of total flavonoids, including aluminum nitrate chromogenic method and direct color method, the sample determination of antioxidant flavonoids, including FRAP method and DPPH method.

样品总黄酮提取方法包括恒温水浴回流提取法和恒温水浴超声波提取法，样品总黄酮含量测定方法包括硝酸铝显色法和直接显色法，样品总黄酮抗氧化性测定方法包括FRAP法和DPPH法。

In this thesis, the basic theory and methods for the determination of geoid is introduced. Then the main error sources for the determination of geoid are analyzed and the error transmission formulas are given.

本文简要介绍了确定大地水准面的基本原理和常用方法，并对影响大地水准面精度主要误差源进行了分析，给出了误差传播的计算公式。

Cervical thermometer: not a determination of the actual temperature, but in the cervical mucus "Guaiacol peroxidase" Rapid determination of enzyme in 5-7 days before ovulation the sharp decline in this period of life can improve pregnancy opportunities.

宫颈温度计：实际并不是测定温度，而是对宫颈粘液中的"愈创木酚过氧化物酶"快速测定，该酶在排卵前5-7天急剧下降，在此期性生活可提高受孕机会。

It has good specificity and sensitivity by a competitive inhibition enzyme-linked immunosorbent assay. The hapten was linked with enzyme and determination method was established primarily that based on competitive ELISA. The limit of this method was 1ng/ml. The study will be useful for studying the immunoassay in the determination of CL residues.

抗体的亚类为IgM，腹水及细胞上清间接ELISA效价分别为1：20 480和1：320，通过竞争阻断实验证明其具有良好的特异性及敏感性，将半抗原经酶标后应用竞争ELISA方法初步建立了CL的检测方法，检测限可达1ng/mL，为进一步制备CL残留检测试剂盒打下了基础。

Methods: The chromatographic separation was performed on a Hypersil ODS2 column(250 mm×4.6 mm, 5 μm) with mobile phases of potassium dihydrogen phosphate hexyl amine solution-acetonitrile(74∶26) for the determination of its related substances and methanol-0.05 mol/L potassium dihydrogen phosphate solution(1∶1) for the determination of dexbetamethasone sodium phosphate. The flow rate was 0.8 ml/min, the detection wavelength was 254 nm, the column temperature was 25℃ and the sample size was 20 μl.

色谱柱为Hypersil ODS2柱(250 mm×4.6 mm，5 μm)；有关物质测定的流动相为磷酸二氢钾己胺溶液-乙腈(74∶26)，含量测定的流动相为甲醇-0.05 mol/L磷酸二氢钾溶液(1∶1)；流速为0.8 ml/min，检测波长为254 nm，柱温为25℃，进样量为20 μl。

The present invention relates to rhodamine 6G hydrazide salicylal azomethine, a synthesization method and an application in the content determination of cupric ions, which belong to the field of the analysis and determination of cupric ions in water sample.

罗丹明6G酰肼水杨醛希弗碱、合成方法及在铜离子含量测定的应用属于水样中铜离子的分析测定领域。

Determination of hydrogen chloride in air by ion chromatography was developed, the collection of sample and conditions of determination were investigated.

用离子色谱法测定环境空气样品中的氯化氢，建立了该空气样品的氯化氢采集和离子色谱分析的条件，并将该分析方法与常用的硫氰酸汞分光光度法相比，具有操作简便、快速、灵敏度高的特点。

He became prime minister in 1997 and won international acclaim for his role in the Northern Ireland peace process.

他在1997年成为总理，并且因为在北爱尔兰的和平进程中发挥的作用受到国际社会的赞许。

Mixed Page Sorting Method Using the cuttable user model, this thesis proposes a mixed page sorting method by using cutted user model in server-side and complete user model in client-side.

隐私分级利用的混合式页面排序方法针对个性化搜索中搜索结果排序的问题，本文利用隐私可控开放的用户偏好模型，提出一个在客户端和服务器端分步进行的隐私分级利用的混合式页面排序方法。