查询词典 fractional replication

Objective To investigate the ability of myocardial fractional flow resever in predicting the incidence of major cardiac events (death, myocardial infarction, revascularization arid recurrance of angina) 3 months after stent inplantation and also try to find out the cutoff point.

目的 研究冠状动脉内支架术后即刻心肌血流储备分数(myocardial fractional flow resever， FFRmyo)对於术后3个月心脏事件的预测价值，并建立目标FFRmyo值。

And also, we have done some researches on the Fresnel number of polygon slits, high efficient retroreflective film, the superluminal and/or subluminal velocities of beams in vacuum, the zero-field truncation technology, fractional Fourier transforms and so on.

同时，开展了多边形光阑菲涅耳数、高效逆向反光膜、真空中光束的超光速与亚光速现象、零场截取技术、分数付里叶变换等相关领域作了研究。

The concept and the universal property of fractional semiring are given.

给出了分式半环的概念和泛性质。

Then, according to phase space reconstruct technique from one-dimensional and multi-dimensional time series, the quantitative criterion and rule of system chaos which combine neural network, analyses, computations and sort are conducted on EEG signals of five kinds of human consciousness activities. The author finds that statistic results of the determinism computation in time series indicate that chaos characteristic may lie in human consciousness activities, and central tendency measure is consistent with phase graph, so it may become one division way of attractor; approximate entropy of different subjects exists discrepancy; correlation dimension and Lyapunov exponent of different consciousness activities indicate that attractors of human activities are all fractional; nonlinear quantitative criterion and rule, which unites neural network, can distinguish different styles of consciousness activity in principle, and the result of sortation takes on that consciousness activity type of arithmetic is distinguished more easily than that of abstract.

采用一维与多维时间序列相空间重构技术和系统混沌的定量判据准则，结合神经网络，对五种思维作业方式的脑电信号进行了分析、计算与分类，发现确定性计算的统计结果表明人类的意识活动中可能蕴含混沌特性，中心趋向测量(Central Tendency Measure，CTM)与相图吻合较好，可作为EEG吸引子的区分方法之一；功率谱分析反映出单个受试者的各种意识形态的差异很小，但是不同意识活动谱中的活跃频段还是略有差异的；个体之间的近似熵存在差异，同种状态下近似熵大的人可能具有更好的创新性；关联维数和Lyapunov指数的计算结果表明大脑的运动落在具有分维的奇怪吸引子上；非线性量化方法与神经网络相结合，可对人脑思维活动进行较好的分类，并且从分类结果来看数理计算类思维活动较抽象类思维活动有着更好的区分度。

Base on the comparison of different feeding effect of dietary starch source, starch in vivo digestion and absorption as well as it's effect on energy and protein utilization, and fractional protein synthesis rate of splanchnic tissues in weaned pigs were further studied.

在比较不同来源饲料淀粉饲养效果差异的基础上，进一步探讨不同饲料淀粉在断奶仔猪小肠不同部位的消化吸收及对能量、蛋白质利用和内脏组织蛋白质合成率的影响，从消化道和组织利用两个层次解释不同饲料淀粉影响仔猪生长的原因。

Fractional anisotropy were measured in the genu, body and splenium of corpus callosum, horizontal part and posterior part of the bilateral cingulste fibers.

目的 探讨创伤后应激障碍患者是否存在连合纤维束胼胝体及联络纤维扣带纤维束的超微结构异常。

The fractional anisotropy values of white matter in schizophrenia patients and normal controls were measured respectively in frontal and the splenium of corpus callosum. Independent-samples t-test for non-paired data was used to test the differences between schizophrenia arid controls for FA values. Correlated analysis was applied to reveal the correlations between FA values in frontal and the PANSS scores.

对22例精神分裂症患者和20例健康志愿者进行脑部DTI扫描后，测量双侧额叶和胼胝体压部的各向异性分数值，应用成组t检验对精神分裂症患者和正常健康对照组的相应区城进行比较，并用部分相关性检验对精神分裂症患者脑中各部位相应FA值与PANSS量表评分之间的关系进行统计。

Objective: To assess the response of fractional stereotactic radiotherapy for lung cancer.

目的：探讨立体定向放射治疗肺癌的近期疗效。

A desulfurization method is proposed for the removal of sulfur compounds from FCC gasoline by alkylation reaction of thiophenic sulfur with olefins over acid catalysts, and the higher boiling sulfur-containing products are removed by fractional distillation.

选择以噻吩的甲基取代衍生物(包括 2-甲基噻吩、3-甲基噻吩及 2，5-二甲基噻吩)与异丁烯的烷基化反应为模型反应，考察了经三氯化铝气相固载法改性的 CT175 树脂催化剂催化噻吩的甲基取代衍生物与烯烃的烷基化反应性能。

Secondly, the fractional order differentiation of rectangle signal, triangle signal and trapezia signal are carried out, meanwhile the analytical expressions of them are presented in this paper.

给出了一些常用周期信号分数阶微分的解析形式，同时也研究了周期序列的分数阶微分运算的数字实现。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。