扩散因子

目的：探讨扩散因子（SF）在乳腺癌发生发展中的作用及其与乳腺癌生物学行为之间的关系。

Objective : To investigate the role of scatter factor ( SF ) in the development of human breast cancer and the relationship with the biological characteristics of human breast cancer .

将经典的仿射模变换与改进的Logistic混沌映射进行了图像位置置乱；并采用扩散因子与混沌映射结合进行像素值置乱，达到改变图像灰度直方图的目的。

We make position scrambling by classic affine module transformation combine to modified Logistic chaotic map , and get scrambling based on the value of pixel by spread factor combine with chaotic map to get the purpose that change the image histogram .

并应用美国NACA低速叶栅试验结果确定流入角和落后角，设计中控制扩散因子和气流折转角。

The inlet flow angle and diviation angle were confirmed which was applied to low cascade experiment result of American NACA , and controlled diffuser factor and flow deflection angle in design .

辽东湾地区大气扩散因子的应用研究

Application of atmospheric diffusion factor in the bay of East Liaoning

肝细胞生长因子/扩散因子和血管内皮生长因子对肿瘤血管再生的影响

Effects of HGF / SF and VEGF on vascular endothelial cells proliferation in tumor

重新确定了SU/PG中的人工扩散因子；

A new algorithm was employed to determine the artificial diffusion factor in SU / PG.

滨海核电厂址事故大气扩散因子与冲洗因子计算方法探讨

The Study of Method for Calculating the Accident Atmospheric Dispersion Factor and Accident Washout Factor for Coastal Nuclear Power Plant

本文定义了选择溶解因子和选择扩散因子，用以评价上述两部分各自对渗透气化过程的贡献。

The contribution of the two parts respectively into the pervaporationwas evaluated with the selective sorption factor and the selective diffusion factor .

扩散因子（肝细胞生长因子）（SF/HGF）是一种多功能的生长因子，与肿瘤细胞的增生、血管生成、侵袭性密切相关。

Scatter factor ( hepatocyte growth factor , SF / HGF ) is a multifunctional polypeptide growth factor that plays an important role in tumor proliferation , angiogenesis and invasiveness .

结果表明：采用附面层吹吸技术后叶栅的气动性能明显改善，气流转折能力增强，扩散因子增大，总压损失系数减小。

All above shows that the aerodynamic performance of cascade meliorated obviously with the use of boundary layer blowing-sucking technique . The turning ability of airflow increased , the diffusion factor enhanced , and the total press loss-coefficient decreased .

《中国实用内科杂志》扩散因子平均值高于《中华内科杂志》，两刊变化趋势一样，近3年有下降趋势。

The average of spreading factor of " Chinese Journal of Practical Internal Medicine " is higher than the " China Journal of Internal Medicine ", the two magazines published have the same trend , a downward trend in the last 3 years .

如果根据厂址年风频或风速组频率分布对概率矩阵进行修正，那么就可以用较短时间的气象观测资料构成概率矩阵，从而较好地估算联合频率和年均大气扩散因子。

If probability matrixes are modified in the light of annual frequency distributions of wind direction and wind speed set , joint frequency and annual atmospheric diffusion factor are better estimated by using correlation matrixes obtained with the shorter period of meteorological observation data .

所用数据适用于扩散因子大于0小于1，而马赫数在0到1.6之间的情况。压气机的加功量或增压比由其基元叶栅的落后角确定。

The correlated data are used for diffusion factors from 0 to 1 0 and Mach numbers from 0 to 1 6.The compression work or the total pressure ratio of a compressor is determined through the use of cascade element performance data concerning deviation angle .

CT-175磺酸树脂催化过氧化氢异丙苯分解是一级反应，当树脂颗粒平均粒径为048mm、反应温度为80℃时，内扩散有效因子为0036。

Decomposition of cumene hydroperoxide ( CHP ) catalyzed by CT-175 sulfonic resin is a first order reaction . The efficiency factor of the resin particles is 0 036 when the particle average diameter is 0 48 mm and the reaction temperature is 80 ℃ .

连续介质中任意炮检距的球面扩散补偿因子

Compensation factor of spherical diffusion with arbitrary offsets in continuous medium

对苯二甲酸精制钯碳催化剂内扩散有效因子的估算

Estimation of effectiveness factor on a Pd / C catalyst

用双重孔模型计算变换催化剂内扩散效率因子

The effectiveness factor of high temperature shift catalyst calculated by random pore model

钒催化剂的内扩散效率因子

The efficiency factor of interior proliferation for vanadium catalyst

不同空间尺度的技术扩散影响因子研究

Study on the Factors of Technology Diffusion

有限长圆柱状催化剂内扩散效率因子多态研究（Ⅰ）&研究方法的开发

Multiple states of effectiveness factor for cylindrical catalyst pellet (ⅰ) & development of solution method

通过试验得到了内扩散有效因子，由有效因子计算催化剂粒内扩散系数。

The efficiency diffusivities of macropores was derived from the efficiency factors of catalyst pellet measured by experiments .

对加压甲醇合成复合反应内扩散效率因子分别建立了一维多组分扩散模型、一维简化多组分扩散模型和一维关键组分扩散模型。

For the multiple reaction system of methanol synthesis , a multi-component diffusion model , a simplified multi-component diffusion model and a key-component diffusion model have been set up .

这弥补了以往区划研究中将交通节点、城镇、景点等扩散型因子的影响分值作均质赋值的不足。

This method makes up weakness that previous studies on division give the homogeneous mark to the affection of the traffic node , towns , attractions and other diffusion factors .

本文导出了在波速随深度线性增加的连续介质中任意炮检距水平界面反射波的球面扩散补偿因子。

In this paper , the compensation factor of spherical diffusion was derived , which is for the reflection from horizontal interface and with arbitary offsets on condition that the medium is continuous and its velocity is increasing linearly with depth .

此外还求取了表面扩散指前因子Dso为1.85×10？

The pre-exponential factor Dso is 1.85 × 10 ?

海流是疏浚物扩散的主要因子，其作用导致监测海区很少出现高悬浮物浓度。

Sea current is the main factor diffusing the dredged matter , there for , high suspended solids level never exists in the survey area .

通过定义膜活性皮层的扩散系数增强因子，提出了相似于传统传热传质方程的扩展模型方程。

By defining an enhancement factor to diffusion coefficient in the membrane top layer , the model equations were developed with the form similar to conventional heat and mass transfer equation .

计算表明，在化学计量比处附近L12Ni3Ga和DO3Fe3Al相中扩散的热力学因子Φ趋于最大值。

The results show that the thermodynamic factors in diffusion in the L1_2-Ni_3Ga and DO_3-Fe_3Al phases exhibit the maximum near the stoichiometric composition with the variation of composition over the phase region .

因此，可认为胜红蓟种子的萌发需要光照，此外，温度、覆土深度以及土壤含水量和水势都是影响胜红蓟种子萌发以及生长扩散的重要因子。

Thus , it could be concluded that A. conyzoides seeds needed light to promote germination . Furthermore , temperature , depth of soil , soil water content and water potential were important factors in influencing seed germination and the spreading of A. conyzoides plants .

CMV的卫星RNA是一种依赖其辅助病毒CMV进行复制和扩散的亚病毒因子。

Sat-RNA of CMV is a subviral agent , which depends on its helper virus to replicate and cell to cell diffuse .