取样

The pathogen of the outbreak of acute icteric hepatitis was genotype IV HEV. There is a close relationship between these positive strains and Jap strain. The use of a new highly sensitive RT-PCR primer set and a timely sampling promotes to obtain high positive HEV RNA rate.

本次急性戊型肝炎暴发流行由戊型肝炎病毒基因型Ⅳ型导致，暴发毒株与日本株有更近的亲缘关系；高灵敏度引物和取样时机是提高戊型肝炎病毒RNA检出率的前提。

An SI slice can be coded such that its decoded samples can be constructed identically to an SP slice.

一个SI类型的slice的解码的取样值可以。。。？？？。

To price the continuously sampled arithmetic average Asian option, an implicit upwind difference scheme is constructed based on the final boundary value problem of partial differential equation, which is satifiable to the option pricing problem. Then the unique existence and unconditional stability of the difference solution are demonstrated and the error estimate is given under the discrete L2 norm.

研究连续取样的算术平均亚式期权定价问题的差分方法，根据问题所满足的偏微分方程终边值问题，构造出一种隐式的迎风差分格式，论证了差分解的惟一存在性和绝对稳定性，并给出差分解在离散L2范数下的误差估计。

This paper proposed a novel Boolean operations algorithm for point-sampled models based on implicit function transformation.

提出一种基于点取样模型的布尔运算算法。

In order to overcome the technological difficulties encountered in the course of insulation fault diagnosis on the base of dissolved gases analysis, several kinds of mathematic models and actualized methods are brought forward to improve the reliability and veracity of fault diagnosis of transformers. The research works are shown mainly as followings:1 A modified fuzzy multi-criteria method is brought forward for insulation fault diagnosis of transformer. Furthermore, a new method for insulation fault diagnosis is proposed on the base of fuzzy multi-criteria together with rule reasoning. With fuzzy diagnosis in the method, fault reasons are filtrated and then the reasons in low probability are prohibited, Moreover, the left reasons are testified by using rule reasoning and then final concludes are drawn in much less misjudge probability and better results.2 On the base of geometry characteristics of C- partition to sample set of DGA data of transformer, a method is put forward to compute effective radius of neighbor field of a sample, number of clusters and values of initial centers. Moreover, the fuzzy C- means cluster model with adaptive weight is brought forward in the first time and then the fault classifier is designed for insulation fault diagnosis of transformer.3 According to the weakness of the degree of gray of gray incidence, a new formula to compute DGI is put forward and then incidence order criterion is ascertained. Moreover, a new DGI model for fault diagnosis is proposed according to the further analysis to relationship between fault reason and content of oil dissolved gases of transformer.

为解决在应用油中溶解气体分析方法（Dissolved Gases Analysis，简称DGA）诊断变压器内部绝缘故障时所遇到的主要技术难题，论文提出了用于提高变压器故障诊断准确性和可靠性的数学模型及实现方法，主要研究工作如下：1）提出了一种改进的变压器绝缘故障诊断模糊综合评判方法；进一步提出了将模糊综合诊断与规则推理相结合进行绝缘故障诊断的方法，该方法采用模糊推理对故障原因进行"过滤"，滤掉可能性极小的原因，然后进一步利用规则推理验证剩下的可能原因，得出最终结论，大大减少了误判比率，获得了较好的效果。2）根据以变压器DGA数据为特征量的样本空间的c-划分几何特性出发，提出了一种求取样本有效邻域半径和聚类数及聚类中心初值的方法，在此基础上，首次提出了一种自适应加权的变压器绝缘故障诊断的模糊c-均值聚类模型，并设计出故障分类器。3）针对常用灰色关联度的不足，提出了一新的灰色关联度计算公式及确定关联序的准则；并在此基础上，通过深入分析变压器发生绝缘故障时的原因与油中溶解特征气体含量的关系，建立了一种新的故障诊断灰色关联模型；通过实例分析证明，该方法能有效地诊断出变压器绝缘故障及故障部位，大大提高了诊断的准确性。

Risk management can offset the uncertain factors throughout the project such as inaccurate core sampling, incredibility of the contractor, etc.

因为，公路工程项目从立项到运营都存在许多不确定因素，如设计过程的地质勘探取样失真、施工过程中承包商的信誉等，这些不确定因素会使得原定计划、方案受到干扰，使原定的目标不能实现。

The titanium border grade of Panzhihua is identified by means of statistical and infinitesimal calculus(referring to the data of Yunan's titanium properly) to get optimum application.

通过用统计和曲线积分方法(并适当参考云南钛砂资源的资料)来确定调查区合理的钛砂矿边界品位，达到矿产资源的最优利用；以规则的取样投影图形代替水平投影，对传统的地质块段法储量估算进行了数学纠正以得到合理的估算参数，并对调查区钛砂资源进行了远景储量估算。

It will restrict circulating water inspissation times ratio upper limit enhancing, will impact on water conservation and discharge reduce, if the auxiliary machinery cooler material quality is worse than steam condenser material quality .

600MW火电机组锅炉连排、汽水化验站人工取样和在线化学仪表排水、投运除盐设备时的冲洗排水的电导率只有10μS/cm左右，相当于一级除盐水，如果当作一级除盐水回收比当作工业水回收，产生的效益高10倍；辅机冷却器的材质差于凝汽器的材质，将制约循环水浓缩倍率控制上限的提高，影响节水减排。

The integrator is set up in the laboratory and it is operated with good performance.

在实验室内对取样积分电路进行调试，取得了良好的工作性能。

In the history of electrical communications, the earliest reason for sampling a signal was to interlace samples from different

在电子通讯的历史中，采用讯号取样的最早理由，是为了使不同的电报系统能够使用同一条电缆线互通有无。

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。