检测

In order to investigate the performance of Iterative Detection in Golden Code system and reduce the complexity of the Iterative Detection algorithm, the Gaussian Approximation and Minimum Mean Square Error methods are proposed to obtain the soft information of each bit.

为研究级联信道编码的Golden码的迭代检测性能及降低迭代检测算法的复杂度，提出采用高斯近似和最小均方误差算法来计算迭代检测过程中所需的比特软信息。

Finally, the feasibility and applicability of the designed system was verified by practical particleboard hot-pressing experiment. The development of the Automatic measurement system for monitoring the internal-mat environment was based on LabVIEW program which is a powerful virtual instrument design workbench. Developed system in this paper can provide a friendly interface, an animated process-monitoring window including a real-time data acquisition of 2 pressure signal channels and 4 temperature signal channels, as well as the asynchronous serial communication between measuring computer and the data acquisition. Practical application testing and data analysis showed that this measuring system was useful and easy to operate by providing accurate and reliable data.

本文详尽介绍了人造板热压过程中板坯内部环境检测系统各组成部分的工作原理以及它们在系统中的作用，着重阐述了系统硬件设计和检测软件的开发，并通过刨花板的热压试验，验证了系统设计可行性和先进应用虚拟仪器系统开发平台-LabVIEW 编制了热压板坯内部环境自动检测系统的应用软件，该软件具有友好的人机交互界面、简单直观的：工艺流程监控、安全可靠的故障处理措施等优点。

The foundation of this system provides a good reference to promote the standardization and intelligence of the overhaul and maintenance of vacuum switches. This paper develops a special HF pulse power supply for internal pressure estimation, which achieves the output of HF-HV sinusoidal pulse wave whose frequency and amplitude can be modified respectively, and meets the design requirements according to the results of Simulink simulation and practical experiments. With the help of AT89S52, this paper designs an I~2C serial bus based signal detection system for peak value signal acquisition of HF pulse currents, which communicates with the upper computer by asynchronous serial communication for uploading the data. In the upper computer, a human computer interface is developed by Matlab software, whose functions are to do some computation and graphic display, such as calibrating the relation curve of vacuum degree and peak value of HF pulse currents, vacuum degree computation, and vacuum lifetime evaluation analysis basing on grey forecasting model as well as making relative suggestions.

本文研制了用于真空度检测的高频脉冲电源，通过Simulink仿真和试验检验其满足设计要求，实现了电压幅值和频率独立可调的正弦波高频高压脉冲输出；利用以AT89S52为核心基于I~2C串行总线的信号检测系统实现高频脉冲电流峰值信号的采集，通过异步串行通信实现单片机与计算机之间的数据通信，将检测数据传至上位机；在上位机利用Matlab开发人机交互界面，实现相关数据处理和图形显示，包括真空度——高频脉冲电流峰值关系曲线标定、真空度数值计算、基于灰色预测模型的真空寿命评估分析和提出相应决策建议。

Based on this algorithm, the dynamic programming to smooth the detected pitch are used and the testing results are compared with the autocorrelation function under the noise environment.

在NCCFPDA算法的基础上，采用动态规划的方法对检测出的基音周期进行平滑，并在噪声环境下与自相关法检测基音周期的检测结果进行了比较。

In this part, a simple and inexpensive method for the synthesis of peroxynitrite based on the autoxidation of hydroxylamine in alkaline media was described.

文中对该检测体系的反应动力学特征、反应酸度、荧光检测酸度、羟基化底物的选择进行了研究，并提出了该方法的检测机理。

To evaluate the specificity of the PCR, genomic DNA of Theileria annulata,Babesia bovis,Toxoplasma gondii,Leishmania donovani and standard strain of N. caninum were used as a template in the PCR. For determining the detection limit of amplification procedure, PCR was run on a dilution series of genomic DNA from N. caninum（1.562 5-200 ng/ml）. Brain tissue samples of 32 aborted fetuses were detected by PCR-based assay, and 23 blood samples from mothers were tested by ELISA. Results The amplified DNA fragment （350 bp）had a high identity of 98% with the Nc-5 gene sequence of N.

以环形泰勒虫、牛巴贝斯虫、刚地弓形虫、杜氏利什曼原虫以及犬新孢子虫标准株DNA为模板进行扩增以验证PCR的特异性，采用紫外分光光度计测定犬新孢子虫标准株DNA浓度和纯度，取高纯度的DNA样品用灭菌水稀释，分别取不同量的DNA进行PCR扩增，确定PCR方法的敏感性；利用该方法对32份奶牛流产的胎牛脑组织样品进行检测，同时，对其中23份流产的母牛血样进行ELISA血清学检测，以评价犬新孢子虫PCR方法的检测效果。

Methods A nested RT-PCR was used for detecting one fragment of SARS-CoV RNA in oropharyngeal swabs from 3 SARS probable patients ,4 SARS suspect patients and other 27 patients with fever in Hangzhou, and the nested RT-PCR product from one SARS probable patient was sequenced.Meanwhile in these 3 SARS probable patients, other three RT-PCR methods, including a hemi -nested RT-PCR targeted for another fragment of SARS-CoV RNA, a real-time RT -PCR and a modified nested real-time RT-PCR, were employed to detect SARS-Co V RNA.Results Two positives were found in the 3 SARS pro bable patients, and none positive in 4 SARS suspect patients and other 27 patien ts with fever, using the nested RT-PCR.

方法对2003年杭州市3例严重急性呼吸综合征临床确诊患者、4例疑似和27名医学观察者的咽拭子标本用巢式实时RT-PCR检测SARS-CoV核酸，对阳性扩增产物进行核酸序列测定，同时对3例患者的标本应用半巢式RT-PCR检测另一位点SARS-CoV核酸片段，并应用常规实时RT-PCR技术及改良实时RT-PCR技术进行检测。

The following Test Procedure is one of several that is recognized throughout the United States for testing Backflow Preventers.

下列检测程序是美国检测防回流阀通用的几种检测程序中的一种。

The hot-plug power system comprises a backplate equipped with a power supply which is in plugging connection with the backplate, a management module of a detecting unit and an enabling unit and a service module in plugging connection with the backplate; the detecting unit is used to detect whether the service module is stably plugged into the backplate, and if yes, the enabling unit outputs a valid enabling signal to the service module and order the service module to be powered.

热插上电系统包括设置有电源的背板、与背板接插连接，包括检测单元和使能单元的管理模块、和与背板接插连接的业务模块；检测单元用于检测业务模块是否稳定插入背板，当背板稳定插入背板时，使能单元输出有效的使能信号至业务模块，指示业务模块上电。

There were only 5 cases negative for SYT-SSX genomic by seminested PCR, which were positive for SYT-SSX mRNA by RT-PCR. Three cases of synovial sarcoma negative for SYT-SSX mRNA were also negative for SYT-SSX genomic DNA. One case of synovial sarcoma was positive for SYT-SSX1 genomic DNA by seminested PCR, which can not be distinguished for SYT-SSX fusion type by RT-PCR.

只有5例SYT-SSX mRNA呈阳性而半巢式PCR SYT-SSX DNA检测呈阴性。3例RT-PCR检测SYT-SSX mRNA呈阴性者半巢式PCR亦为阴性结果。1例RT-PCR方法无法确定融合基因类型的病例SYT-SSX DNA检测为SYT-SSX1型。

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。