查询词典 determination

Therefore, the effects of ionic strengthof eluents and sample concentration on the molecular weight determination of acidicpolysaccharides and neutral polysaccharides were investigated in HPGPC(Ultrahydroge〓 column) for the first time. Meanwhile, the chromatographiccondition for molecular weight determination of polysaccharides by HPGPC wasoptimized with Dextran series as standards to perform calibration plot.

为此，我们首次采用HPGPC(Ultrahydrogel〓柱)探讨了流动相的离子强度以及样品浓度对中性多糖和酸性多糖分子量测定结果的影响，并对HPGPC测定多糖分子量的条件进行了优化。

The determination limit is 1μg/mL, this method is simple, quick and accurate, could be used for the determination of flavones in real samples.

测定方法简单快速，具有一定的测试准确度和灵敏度，可用于实际样品中黄酮类化合物的分析。

Applications of gas chromatography in the research of biodiesel processing are reviewed with 27 references,including the analysis of fatty acid methyl esters in the reaction products and final biodiesel,the determination of mono-, di-and tri- glycerides ,the contents and distribution of free fatty acids,and the determination of trace methanol in biodiesel.

综述了气相色谱法在生物柴油生产工艺研究中的应用，包括反应产物和生物柴油产品中脂肪酸甲酯含量和分布的测定，单脂肪酸甘油酯、二脂肪酸甘油酯和三脂肪酸甘油酯含量的测定，游离脂肪酸含量的测定以及微量甲醇含量的测定等。

Based on RRS spectrum of the ion association complex, a highly sensitive, simple and rapid method for the determination of trace amounts of berberine has been developed and applied to the determination of berberine in pharmaceuticals and goldthread extracts with satisfactory results.

基于小檗碱与氯金酸反应产物的RRS光谱，发展了一种高灵敏、简便、快速测定小檗碱的新方法，用于中成药和中药饮片样品的测定，结果满意。

Flow injection fluorometry for the determination of carbamazepine in pharmaceuticals and plasmaA simple, sensitive and specific spectrofluorimetric method has been developed for the determination of CBZ. The method was based on lead dioxide solid-phase reactor flow injection on-line oxidizing CBZ into fluorescent product in medium of phosphoric acid. The product has green-yellow fluorescence at excitation wavelength of 355 nm and emission wavelength of 478 nm, and the fluorescence intensity could be enhanced in the presence of acetone. The reaction conditions and experimental conditions were studied and optimized.

二、流动注射在线氧化荧光法测定卡马西平的研究利用卡马西平自身无荧光，经过氧化后可转变为在最大激发波长为355nm，最大发射波长为478nm的强荧光物质，而且丙酮对该荧光体系有增敏作用的现象，应用流动注射体系建立了以醋酸纤维素固定化的二氧化铅作为固相反应器、在磷酸介质中在线氧化荧光法测定卡马西平的新方法。

Double-antibody sandwich method for determination of 2 price or value of more than two macromolecular antigen, but not for the determination of haptens and small molecules unit antigens, because of two points can not form the sandwich.

双抗体夹心法适用于测定二价或二价以上的大分子抗原，但不适用于测定半抗原及小分子单价抗原，因其不能形成两位点夹心。

Some experiences that how to raise accuracy in volatile matter determination were stated from several different aspects,such as crucible and support,determination of muffle furnace and constant temperature,coal sample weighting and crucible placing and correct understanding of calculation formula,etc.

从坩埚及其支架、马弗炉及恒温区的确定、煤样称取及坩埚摆设和正确理解计算公式等方面，阐述在煤的挥发分测定过程中如何提高准确度的一些体会。

The following steps were taken:(1) design of a grading system model;(2) determination of proportions of histologic grades by naked-eye evaluation and by digital measurement;(3) evaluation of metastasis according to proportions of grades;(4) determination of the influence of site of grade 3 in nodal metastasis;(5) design of a Gleason-like scoring system; and (6) statistical evaluation.

接着，我们进行了以下步骤：（1）设计好我们的分级系统；（2）肉眼和计算机软件分别评估确定各级组织学图像所占比例；（3）根据各级组织学图像所占比例来评估淋巴结转移情况；（4）得出3级组织学图像在瘤组织不同区域对淋巴结转移的影响；（5）设计出Gleason样的评分分级系统；（6）统计分析。

A new catalytic spectrophotometric method for the determination of trace iodide has been established by reverse flow injection technique based on iodide catalyzing determination reaction of victoria blue with potassium bromate in the phosphoric acid.

基于在磷酸介质中I-对溴酸钾氧化维多利亚蓝褪色反应的催化作用，建立了一种用反相流动注射催化动力学光度法测定微量元素碘的新分析体系，该方法的线性范围为0.2~4.0μg/mL，检出限为0.12μg/mL，相关系数为

Methods The acid-base titrations was used for determination of benzoic acid and salicylic acid,UV was used for determination of salicylic acid.

用中和法测定两酸的总量，用紫外分光光度法测定水杨酸的含量，从总量中减去水杨酸的含量即为苯甲酸的含量。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。