标准测定

Manna sugar potentiometric method has been used to determine the boron in foliage spray fertilizer which contained the humic acid.

甘露醇电位滴定法测定含腐植酸叶面喷施肥中硼的含量，用酸度计来指示滴定终点，不需对样品进行处理，方法操作简单，精密度、准确度较高，相地标准偏差小于 1%，回收率在 97%以上。

The molar dissolution enthalpies,ΔsHm, of BMIC/ZnCl2 in water with various molalities were determined by a solution-reaction isoperibol calorimeter at

在298.15K下，用具有恒温环境的溶解反应热量计测定了不同浓度离子液体BMIC/ZnCl2在水中的溶解焓，依据Pitzer方程拟合得到它们的标准摩尔溶解焓ΔsHm0和Pitzer溶解焓参数。

The method was used to determine the concentration of tungsten, molybdenum and titanium in standard steel sample, and the relative errors were 1.83%,-0.09% and -1.92%, respectively.

将所建立的方法用于标准钢样中钨、钼、钛的测定，相对误差分别为1.83%，-0.09%和-1.92%。

The monoclonal antibody was produced by the method of inoculating BALB/c mice intraperitoneally with the hybridoma cells, and purified with protein A-Sepharose 4B affinity chromatography.3 Establishing of ELISA protocol to detect hBLySTwo kind of different ELISA protocols were tried to study the experiment condition of detecting hBLyS level. Streptavidin was used to indirect coating in protocal 1, but biotin-avidin system was used to enlarge the final reaction signal in protocal 2. The optimal reaction condition was chosen by the experiments. The sensitivity of protocal 1 was poor, but the linear relation of protocal 2 standard curve was excellent when the concentration of hBLyS was between 3.2~400 ng/mL. So a protocal was established which sensitivity can reach to nanogram.

建立检测hBLyS蛋白含量的ELISA方法选用2种ELISA方案对hBLyS蛋白含量的测定方法进行研究，方案一用链霉亲和素做间接包被，方案二用生物素-亲和素系统做终反应放大；优化选择2种检测方法的反应条件；方法一的敏感度较低：方法二在hBLyS蛋白浓度为3.2～400 ng/mL范围内，标准曲线的线性关系良好；从而建立了一种可检测hBLyS蛋白浓度为ng级水平的ELISA方法。

Objective: To determine the effectiveness and validity of morphometric analysis made from dental panoramic tomograms for predicting mandibular bone mineral density while taking the result of dual energy X-ray absorptiometry us gold standard.

目的：以双能X线吸收测量法为金标准，评价形态测定分析法表达下颌骨骨密度的有效性和可靠性。

Material and method the acidity in 1.1 principles breast is main with lactic acid plan, consult the method always determines acerbitily in soy, with acidity plan indicates terminus, the color of sample does not have an influence to its. Solution of amortize of standard of mixture phosphate of 1.2 reagent and instrument ①(when 20 ℃ PH is 6.88)[2] : Approach?.40 G is in in 105 ℃ oven in the KH2PO4 of stoving 2 H and water of Yuchun of 3.55 GNa2HPO4 dissolve, attenuant to 1 000 Ml.

为了克服国标中的缺点，采用酸度计法并给出计算结果的公式。1材料和方法1.1原理乳中的酸度主要以乳酸计，参考酱油中总酸的测定方法，以酸度计指示终点，样品的颜色对其无影响。1.2试剂和仪器①混合磷酸盐标准缓冲溶液(在20℃时pH为6.88)[2]：称取3.40 g在105℃烤箱中烘干2 h的KH2PO4和3.55 gNa2HPO4溶于纯水中，并稀释至1 000 ml。

The contents of unsaturated fatty acids were the stablest, with the average being of 86.0% of soybean oil and 52.0% of palm oil.

对10份掺伪模拟样品进行了测定，其定量分析结果的相对标准偏差均小于5%，利用这3项指标可对大豆油中掺伪棕榈油的含量进行多元定量计算。

The correlation coefficient is 0.9999,and the recovery rate is about 90%～97%.Se of saffrons from 4 regions was determined by standard curve method.

采用标准曲线法对4种不同产地的西红花干燥柱头中硒进行了测定。

Methods randoms sampling method was used and the participants were interviewed by trained health workers under a structured questionnaire.

采用随机抽样的流行病学调查方法进行问卷调查，并对调查人群（392人）测定空腹血糖、血脂、体重指数、血压等，运用CDS标准（2004年）MS定义对资料进行分析。

In order to establish a quantitative method in detecting HIV 1 proviral burden and viral load, 8E5 cell line and a recombinant RNA constructs were used as the HIV 1 proviral DNA and viral RNA external references, respectively.

以定量的HIV 1DNA和RNA为标准外参照，利用SYBRGreen荧光染料和GeneAmp5 70 0SequenceDetectionSystem (5 70 0系统)，建立了测定HIV 1的前病毒载量和病毒载量的荧光实时定量PCR技术。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。