查询词典 sample method

Traditional multivariable analysis method, for example, principal component analysis method and factor analysis method, are common in calculating the mean vector, the covariance matrix of sample and other variables.

摘要传统的多元统计分析方法，如主成分分析方法和因子分析方法等的共同点是计算样本的均值向量和协方差矩阵，并在这两者的基础上计算其他统计量。

Based on studies about current development of Methods of separating meiofauna, a new method is advanced in this paper. A suit of device was designed to Separate meiofauna from benthic sediments sample automatically, accurately and efficiently, which based on the technology of Laser-induced Fluorescence Detection, and used other technologies, such as noctilucence, electronics, biophysics, computer, mechanism, and so on. The scheme of macrocosm, the design of light route, the hardware and software design of the photoelectricity detection system and machine control system, the method of signal processing are introduced, especially the hardware and software design and the method of signal processing.

论文分析了目前国内外所使用的小型底栖生物分离方法现状，并以此为基础，自主开发了一套基于激光诱导荧光技术，并且集荧光化学技术、电子物理技术、光电测量技术、计算机技术及机械技术为一体的小型底栖生物标本自动分离系统，实现了从沉积物样品中自动分离小型底栖生物标本，从而大幅度提高室内小型底栖生物分样的工作效率和精度的目的，并以此完成了大洋协会"十五"攻关项目："小型底栖生物标本自动分离系统研制"。

Methods The sample pro-treatment method was optimized by oscillators and sample concentration instrument, and the carbamates pesticide in vegetable were tested by gas chromatography-mass spectrometry.

方法用振荡器和样品浓缩仪优化样品前提取方法，以气质联用仪分析氨基甲酸酯农药。

In order to reduce the conflict of L1P in CMT,we propose the policy of logic partition L1P Cache by n power of 2 and the competing loop lock.Now the fairness researchs always need single thread sample phase,we propose a novel fairness policy:FROCM,it doesn\'t need single thread sample phase.We propose ring cooperant L1 data Cache,which can reduce both the complexity of the design and the load of L2 Cache.We also propose a method to exchange threads dynamicly based on fast-shared data pool,it can detect the data consanguinity of two threads in real time and exchange them into one core rapidly.At last,we design and implement a dual-core and dual-thread VLIW prototype YHFT DSP/DS based on the above studies.In order to enhance the bandwidth of data path and reduce the delay of critical path delay of CMT processor,we design a 10R/6W register file full customly.

为了减小多线程运行时指令Cache的冲突，本文提出了二幂等分指令Cache策略和循环锁竞争机制；现有对CMT处理器公平性的研究常常需要中断其它线程进行单线程采样，针对这个问题本文提出了多线程公平性策略FROCM；本文提出了环形协同数据Cache结构，以解决CMT处理器中共享存储体负载重，冲突大的问题；本文还提出了基于快速共享数据缓冲池的线程动态交换技术；最后本文实现了一个双核同时多线程芯片原型YHFT DSP/DS。

Abstracts: To sample high speed random signals without drop, a design of O-shaped high speed random signals acquisition card based on the CPLD and its realization are presented. It consists of same three sets of acquisitive circuits, which construct O-shaped structure to sample the signals without drop .And it adopts threshold judging method to determine the valid data in the process of the acquisition, abandons vast of the redundant useless data at the same time, it only sends the useful data to the host computer by the way of DMA, so it is easy to processing the data. The design is concise and reliable. The sketch map of the logic circuit and the explanation of the main parts are presented. This design has been applied in the engineering project of sampling α nuclide.

为了对随机到来的信号进行不丢失的高速采集，提出了一种基于CPLD的随机信号环形高速采集卡的设计与实现；通过采用三套采集电路形成一个环形结构，可以对随机到来的信号进行不遗漏的高速采集，而且在采集过程中利用阈值的方法鉴别出有用信号，并舍弃了大量的冗余无用数据，从而只将有用数据以DMA的方式传于主机，便于进行信号的处理；电路设计简洁可靠，并给出了主要的逻辑电路示意图与主要部件说明；该系统已经应用在采集α核素的工程实践中。

Methods: The protein and other impurity in the sample were precipitated by zinc acetate and potassium ferrocyanide after dipping of the sample. N,N-dichlorocyclohexylamine derived from sodium cyclamate by sodium hypochlorite in the filtrate was extracted by hexane. The HPLC separation was carried out with a phenomenex Gemini-C18 column using acetonitrile-water(7+3) or methanol-water (8+2) as mobile phase and detected by UV monitor at 314 nm. External standard method was used for quantification.

样品中甜蜜素浸提后，用乙酸锌和亚铁氰化钾试剂沉淀蛋白质等干扰杂质，过滤，用次氯酸钠将样品溶液中的甜蜜素转化为N，N-二氯环己胺经正己烷萃取后，在phenomenex Gemini-C18柱上，以乙腈－水(7+3)或甲醇－水(8+2)为流动相进行分离，HPLC-UV检测器在314 nm测定，外标法定量。

Char sample with different burn off radio were obtain with a tube furnace reactor, burn off radio of the char sample were 0, 30%, 50%, 70% and 100%. Oxygen functionalities of the samples were studied by using XPS method.

分别取污泥质量分数为0、10%、20%、30%和100%配制成5组样品，在管式炉反应器中分别得到各样品在0、30%、50%、70%和100%燃尽率下的焦样。

After the waste catalyst sample during silicon coupling agent synthesis was pretreated with this method, the platinum in sample was determined by tin dichloride spectrophotometry.

硅偶联剂合成中废催化剂样品用本方法处理后以氟化亚锡分光光度法测定铂含量，分析值重现性好。

The technique requires multiple extractions from the sample vial. This is very useful for developing method and running special sample.

对于同一样品瓶的多次顶空提取，得到多个样品色谱图，用于方法的开发和对特种样品的分析。

Samples were prepared with pressed powder pellet method by mixing synthetic sample and standard sample.

采用人工混配有限煤炭标准样品粉末直接压片制样，X射线荧光光谱仪同时测量煤中的砷、硫、磷、氯。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。