查询词典 deviation factor

Moreover,utilizing the theory mentioned above,the value of the peak factor about the wind-induced vibration of roof structure was obtained,The results show that the prescript of peak factor in Chinese code is probably unsafe for the wind-resistant design.

该算例的分析结果表明：当采用我国荷载规范规定的峰值因子取值来计算屋盖结构的风振响应时，其结果可能是偏于不安全的。

At first, the wind tunnel test and test data process of this study are introduced in detail. A method to calculate expected extreme values of time series with a long time interval is then proposed with its sub-sections based on the classical Gumbel theory for extreme values and the independence of observed extreme values. At last, the extreme values of the wind pressure coefficients of the present wind tunnel test are calculated with the proposed method and methods used widely at present, such as peak factor method, improved peak factor method and Sadek-Simiu method.

首先 介绍了风洞试验及试验数据处理的基本概况；然后在阐述经典Gumbel极值理论的基础上，根据观察极值的相互独立性推导了短时距下极值分布参数和长时距下极值分布参数的关系式，给出了一种由短时距样本推算长时距下的极值估算方法；最后基于风洞试验数据，将常用极值估算方法(峰值因子法、改进峰值因子法和Sadek-Simiu法)和该方法的计算结果进行了比较。

HPLC; sensitivity enhancement factor; peak compression factor

高效液相色谱；灵敏度增加值；峰压缩因子

Finally, the empirical result of the single systemic factor model showed that the common factor Z had periodicity existed; that is to say, if Z was negative in average within the first quarter, then that meant the overall economic situation in that quarter was not good, and affected every enterprises credit ratings declining.

最后，单一因子模型的实证发现，共同因子存在一个周期性，即每年的第一季Z均为负，表示该季总体经济状况不好，使得平均每一家企业的信用评等均下降，每年的二四季Z均为正，表示这三季的总体经济状况良好，使得平均每一家企业的信用评等提升。

Tested the volatilization of boron through the acid-alkali neutralization titration, analyzed the influencing factor of boron volatilization, the conclusion showed that the moisture content and heating-up time were important factor; observed the phase splitting by the SEM, the conclusion showed that the phase splitting were all connected state.

通过酸碱中和滴定法测定了硼挥发量，分析了影响硼挥发的因数，结果表明含水量和升温速率是影响硼挥发的重要因数；通过扫描电镜观察了玻璃的分相情况，结果表明其分相类型均为连通状分相。

The experiment results indicate that higher phase splitting speed and extraction factor can be achieved when low-carbon alcohols such as n-butanol are used as organic solvents; by using five different N-carbobenzyloxy-L-amino acids as chiral ligands that are formated with Cu(superscript 2+) or Ni(superscript 2+), it is found that as a ligand, Z-Phe has a low extraction factor, while Z-Hyp, Z-Pro, Z-Glu, Z-Val have higher extraction factors, and among these, Z-Val has the highest distribution coefficient; pH value of extractant, when near to the PI of phenylalanine, helps to improve extraction resolution effect; temperature has no obvious effect on the resolution result.

结果表明：以低碳醇类正丁醇作有机稀释剂，所用5种N-苄氧羰基氨基酸（分别为Z-Phe、Z-Hyp、Z-Pro、Z-Glu、Z-Val）与Cu(上标 2+)或Ni(上标 2+)形成手性配位体后，以Z-Val作手性配体，萃取相pH值接近苯丙氨酸等电点时，萃取拆分效果最佳。

There are complicated difficulties in Plantinga's theory. In this essay, I start from the 4th factor of warrant : leading to truth, pointing out that under certain circumstance, this factor will demand the recogniser to distinguish truth and false. This demand is in conflict with the distinction of de jure question and de facto question, meanwhile it is not coherence with the externalism position insisted by Plantinga.

普兰丁格的理论包含着复杂的困难，本文从保证概念的&导向真理&这一规定入手，指出这条规定在某些情况下为保证概念提出了鉴别真假的责任，从因而与普兰丁格所提出的规范性问题与事实性问题的区分相冲突，也不符合普兰丁格所坚持的外在主义立场。

Objective To compare the expressions of Pigment Eithelium Derived Factor and Vascular Endothelial Growth Factor in pterygia and in normal cornea and conjunctiva.

目的 研究色素上皮衍生因子(PigmentEpithelium -DerivedFactor ，PEDF)及血管内皮生长因子(VascularEndothelialGrowthFactor ，VEGF)在翼状胬肉和正常角膜及结膜组织中表达水平的差异。

Transcription factors can control the transcription of their target genes when they bind to the DNA-binding sites on their promotors. They can transfer the messages of growth factors and so on to those effective molecules. Core binding factor al is such a kind of transcription factor, which can control the differentiation of osteoblasts peculiarly. They can induce the pro-osteoblasts or non-osteoblasts to synthesize and secrete most mineralize related proteins such as ALP, OC, OPN, BSP and so on, in order to differentiate to osteoblasts finally.

转录因子是一类可以通过与下游靶DNA结合，从而调控下游基因转录的分子，它们接受来自生长因子等方面的信号，再将这些指令具体地传递给直接执行功能的蛋白分子。cbfal是一种成骨分化特异性转录因子，可以诱导成骨前体细胞合成和分泌ALP、OC、OPN、BSP等矿化相关蛋白，向成骨细胞分化。

In the dissertation, a new stabilization method, equal-density method was adopted to prepare modified asphalts with storage stability at high temperature. In this method, a compound was prepared by premixing polymer and filler, and the compound was mixed with asphalt to prepare Polymer-Modified Asphalt by changing the ratio of polymer and filler. The asphalts with good storage stability were formed with the addition of filler, by regulating the density difference between polymer and asphalt. With identifying the effect of composition factor and the technique conditions on mechanical properties of polymer/filler compound and the molecular distribution of the polymer, identifying the effect of composition factor and the technique conditions on the properties and structure of polymer/filler modified asphalt, Styrene-Butadiene-Styrene copolymer, Low Density PolyEthylene, Styrene-Ethylene-Butadiene-Styrene block copolymer modified asphalts with good storage stability and performance were prepared. Rheological method, gel content analysis and swelling measurement were adopted to elucidate the interaction between the polymer and filler. Filler reduced the difference between the polymer and asphalt with the premixing technique, which led to the improvement of the storage stability of the modified asphalts. The thermo-oxidative aging process of base asphalt and PMA were studied and the effect of antioxidant additives on the base asphalt and PMA were analyzed.

本论文采用等密度方法，即预先混合聚合物与填料制备复合物，复合物在沥青中会吸收油份而溶胀，改变填料的用量从而调节聚合物与沥青的密度差异的方法，制备出高温贮存稳定的改性沥青，并研究了工艺条件和配方因素对聚合物/填料复合物力学和聚合物分子量分布的影响，系统考察了工艺条件和配方因素对聚合物/填料改性沥青性能与形态结构的影响，研制出性能优良、高温贮存稳定的苯乙烯-丁二烯-苯乙烯三嵌段共聚物、氢化SBS、低密度聚乙烯改性沥青，并通过流变学分析方法及凝胶和溶胀测试探讨了聚合物与填料的相互作用，指出经过预混工艺填料改变了聚合物与沥青的密度差异，以此说明聚合物/填料改性沥青高温贮存稳定的原因；研究了基质沥青和聚合物改性沥青热氧老化过程，并分析了抗氧剂对基质沥青及聚合物改性沥青的影响，探讨了抗氧剂提高沥青耐老化性能的原因。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。