灵敏度分析

Limit of detection for tetramine by thin layer chromatography;2. Control of the cell in the colorimetric device can improve the accuracy, sensitivity and the limit of detection .

在仪器比色池中采用恒温的方式不仅可以提高分析方法的灵敏度和准确度，还可以提高仪器的最低检出限。

Applied to the determination of sample solution and the transaminase activity in the process of L-phenylalanine production by transamination, the proposed method proves to be simple, rapid and sensitive, and can be used as an effective means to monitor the process of L-Phe production.

将该法用于转氨酶法生产L－苯丙氨酸工艺中进行样品溶液分析及转氨酶活力测定，结果表明，该法简便、快速、灵敏度高，可以用于监控反应进程。

Methods 40 serum samples of high, middle and low bilirubin concentration were determined by vanadic acid oxidation assay and compaired with diazo method. The precision, sensitivity, stability and interference of vanadic acid oxidation assay were analysed.

收集40例高、中、低浓度的血清样本进行钒酸氧化法与重氮法的比对，分析钒酸氧化法的精密度、灵敏度、稳定性并做干扰实验。

The sensitivity, specificity, positive predictive value, negative predictive value, Youden's index of three biomarkers were calculated.

以灵敏度为纵坐标，1-特异度为横坐标，分析ROC曲线，从而确定检测的最佳阈值。

Methods 224 patients with liver biopsy and a positive HBsAg were included in this study. The AUROC of AST、ALT、AST/ALT and APRI were identified by using receiver operating characteristic curves. Sensitivity, specificity, positive and negative predictive values, and Youden Index of APRI at optima cut-off were calculated.

调查224名乙肝表面抗原阳性的乙肝患者，利用ROC曲线分析AST、ALT、AST/ALT和APRI的面积，判断APRI的最优截断点并计算不同标准的灵敏度、特异度、阳性预测值、阴性预测值、Youden指数。

Tail Length, Tail Moment, Tail DNA Percentage, and correction rate were compared between the improved software and the original one, and epidemiological indices for the improved software were also calculated and analyzed, including sensitivity, specificity, Youden index, crude agreement, adjusted agreement, positive predictive value, negative predictive value, positive likelihood ratio, and negative likelihood ratio.

比较改进前后的尾长、尾矩、尾DNA百分含量上的差异、改进前后分析正确率差异、以及改进后的软件以不同DNA损伤级别为截断值判定阳性结果的灵敏度、特异度、Youden指数、粗一致性、调整一致性、阳性预测值、阴性预测值、阳性似然比和阴性似然比。

In this thesis, the microfluid chip electrophoresis apparatus with laser induced fluorescence and charge-coupled device was set up in our lab and two model sample, EOS and fluorescein, were separated in a few seconds.

而建立高灵敏度、高速高效的分析方法以研究生物微环境中的超痕量物质是研究单个细胞或生物囊泡复杂的生命物质的含量、组成的关键。

Combined with high sensitive detective method, such as laser-induced fluorescence, electrochemistry, chemiluminescence and mass spectrometry, microfluid chip and capillary electrophoresis is becoming one of important and useful tool in post-genome era including proteomics as the results of theirs high performance, high speed and high throughput.

在生命科学的研究中，以毛细管电泳、微流控芯片毛细管电泳为代表的高速、高效、高通量分离分析技术与以质谱、激光诱导荧光为代表的高灵敏度、高选择性检测技术的联用，已成为后基因组时代的主流技术，是最重要的研究工具之一。

The results showed that the reaction condition was mild (70℃, 60 min). The derivatives could be directly detected by MALDI-TOF-MS without desalted procedure, avoiding lose of sample.

结果显示：衍生化方法反应条件温和(70℃反应60 min)，衍生物不用脱盐处理即可直接进行质谱分析，检测灵敏度高，避免了微量样品的损失。

Also, based on the engendering characteristics of acoustic sources, parameters and waves characteristics of signals are identified through calculating.

理论分析表明，气泡破裂所产生的声发射源强度超过了检测系统的灵敏度，可以被声发射检测系统检测到。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐