直接因子

Many study indicated that VEGF is the most important and direct factor to stimulate vessel growth, and play an important role in neovascularization.

许多研究认为，血管内皮生长因子是目前发现的最重要、最直接的刺激血管生长因子，在新生血管的形成中起重要的作用。

Due to the fact that all the possible combinations has been fully considered in full factorial experiment method. An optimal design can be achieved and its conditions can be determined without resorting to factor response analysis.

因为在全因子实验中已经考虑到所有可能的排列组合，故不需要作因子反应分析而直接从实验结果中即可挑出一组最佳化设计。

First, based on the factorization theorem for lepton-induced hard diffractive scat-tering and the factorization framework of the nonrelativistic Quantum Chromodynamics for quarkonia production, We present a study of J/〓+jet diffractive productionin the direct photon processes at DESY HERA.

首先，基于轻子引起的inclusive硬衍射散射的因子化定理和重夸克偶素产生的非相对论QCD因子化框架，我们研究了DESY HERA对撞机上J／〓+jet的衍射直接光产生。

In order to select the most appropriate method for the actual situation at the South China Sea, this paper designed models and used data from some region in the South China Sea to compare four RTP-L methods (the hyperbolic sine method, the suppression RTP filter method, the direct damping method and the pseudo-inclination method) in the wavenumber domain which change the RTP operator.

本文针对其中4种在频率域对化极因子做处理的方法(双曲正弦法，压制因子法，直接阻尼法，伪倾角法)，设计模型进行对比，并用南海某地区的实测数据进行4种方法的化极效果对比，选出一种最符合南海地区实际情况的化极方法。

The endometrium undergoescharacteristic morphological and biochemical changes under the influence of the ovarian steroid hormones in preparation for nidation. As a general regulator of implantation, the steroid hormones make effect through their receptors respectively; direct or indirect regulate the secretion of cytokines, growth factors and molecular adhesions, which may be necessary for successful implantation to occur.

比例适当的雌、孕激素通过各自的受体作用于子宫内膜，是着床的总调控师，使子宫内膜间质水肿、血管扩张充血，为胚胎着床提供物质基础；间接或直接调控着细胞因子、生长因子及粘附分子的分泌和释放。

According to the characteristic that the definition point of the Q matrix of wave front is always located on the extremum point on the axis of the beam, a three-dimensional formula for the rectificative factor of phase in complex ray paraxial approximation is proposed, which calculates the rectificative factor of phase directly without considering the calculation of the main directions and curvatures and the rotation of the coordinates, thus simplifying the paraxial approximation calculation by the complex ray expansion method.

根据波前Q矩阵的定义点总位于波束轴上极值点的特点，提出了三维复射线近轴近似相位校正因子计算公式。该公式不用考虑主方向和主曲率的计算和坐标旋转，直接计算相位校正因子，从而简化了复射线展开法的近轴近似计算。

External regulator of positive feedback is variation of precipitation amount and frequency of extreme precipitation. It is shown that desertification is predetermined by the decreased precipitation as well as by the decrease in frequency of precipitation. In the second half of 20th century importance of man-induced degradation of dry lands as additional regulator of positive feedback has been increased.

正反馈的外部调节因子是降水量的变化和极端降水事件的出现频率，降水量减少以及降水频率的降低直接影响沙漠化的程度。20世纪下半叶，人类因素导致的干旱土地退化作为另外的正反馈调节因子，其重要性正在增加。

Third, in the aspect of influence of knowledge transaction cost factors and knowledge transfer mechanisms on knowledge transfer performances, knowledge transaction cost factors such as "trust","task uncertainty","information completeness","information asymmetry", and "knowledge tacitness" had direct and indirect influence on knowledge transfer performances.

在知识交易成本因子与知识移转机制其对知识移转绩效之影响方面，「信任」、「任务不确定性」、「资讯完备性」、「资讯不对称性」与「知识内隐性」等知识交易成本因子，则对知识移转绩效同时存在有直接与间接影响。

ABSTRACT Hairy and Enhancer-of-split-type protein 1 (Hes1) is a main effecter of the Notch pathway and acts as a differentiation repressor and/or as a pro-expansion factor during the pancreatic development.

由于人们尚未找到胰腺干细胞的特异性标志，因而给胰腺干细胞的分离纯化及其特性的研究带来了极大的困难。来自hes1-/-敲除小鼠的研究提示，Hes1作为Notch信号通路的一个关键分子，在胰腺发育过程中扮演着扩增促进因子或分化抑制因子的角色，因而有可能用作胰腺干细胞的备选标志分子，但这一推论缺乏直接的证据。

The direct relationship between the strength coefficient of fly ash and main factors,such as the pozzolanic activity index,content of fly ash,water binder ratio and curing age,is given.

提出了粉煤灰强度效应因子k的动态预测模型，该模型建立了粉煤灰强度效应因子与粉煤灰火山灰活性指数、粉煤灰掺量、水胶比、龄期等主要参数之间的直接联系，并考虑了粉煤灰品种、水泥品种等其它因素的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。