因子的

Concerning the idea of integrated whole stand model,the detailprocess is given based on nominal age method and its related equationsso as to predict future stand factors and diameter distribution for thinnedand unthinned stands when the initial stand factors are known.

根据全林整体模型的概念，本文还给出了在已知初始林分因子的条件下，用名义年龄及相关方程可以实现对间伐林分和未间伐林分未来时刻林分因子及林木直径分布的预估的具体过程。

The development and maturity of zygotic embryos required a higher level of acyltransferase.Our results showed that ERT and SCL were unique during somatic embryo development,the rest of transcription factors were not remarkable difference with the expression level between two types of embryo development process.

合子胚的发育和成熟要求更高水平的酰基转移酶；除ERT和SCL转录因子是体细胞胚胎发育所特有的，其余转录因子的表达水平在两种类型的胚胎发育过程中没有明显特异之处。

In the early stage of its development, once induced by the morphogen,transcription factors such as SHH, WNT and BMP, are specifically expressed in neuronalcells to trigger the downstream effects, and determine the cell fate finally.

在神经系统发育的早期，在SHH，WNT，BMP等形态发生因子的调控下，神经细胞内的转录因子特异性表达，并启动一系列的转录事件，最终决定神经细胞分化方向。

The lag-orrelation analysis and correlation analysis after lowpass filter of dependable standard chronologies between upper-limit and low-limlt suggest that the tree growing at the upper-limit lags behind that at the low-limit in response to environment factors.

相关分析表明，生长在森林上限的树木对环境因子的响应滞后于森林下限，生长在最大降水高度附近的树木对环境因子响应的敏感性最低。

As to the detecting parts and hardware of zeitgeber, we adopt modelized designation, using different detecting models and collocating relative models of zeitgeber according to actual objects of study and requirements of experiments.

系统中检测部分和授时因子的硬件实现采用模块化设计，根据具体的实验动物和实验要求采用不同的检测模块并且配置相应的授时因子发生模块。

The regulatory effect of corticosteroids treatment on growth factors is mainly at early stage of tendon healing, but hyaluronic acid works at early and late stages. Corticosteroids always facilitate the expression of the growth factor, whereas hyaluronic acid not only promote but also inhibit the expression of growth factor.

皮质激素在肩袖损伤修复过程中对4种因子的调控主要在早期；透明质酸在修复早期、后期均有不同程度的作用；皮质激素的调控作用主要是促进生长因子的表达，而透明质酸存在双向调控作用。

The classical mechanism of E2 involves estrogen binding to receptors in the nucleus, after which the receptors dimerize and bind to specific response elements known as estrogen response elements located in the promoters of target genes. However, ERs can also regulate gene expression through protein-protein interactions with other DNA-binding transcription factors in the nucleus, or through regulation with production and activity of other genes.

除了与经典的雌激素反应元件结合引起基因转录外，也可通过蛋白质-蛋白质之间的相互作用而调节其他转录因子的转录激活作用，或者对其他转录因子生成或活性的影响而调节基因转录。

The expressions of VEGF in rats' skeletal muscles induced by acute exercise and/or hypoxia belong to the effect of immediate-early, with existing intensity-threshold, which recovery speed is inversely proportional to the expression amplitude;"training low-living high" may be able to enhance the adaptation of skeletal muscles to sports.

急性运动和/或低氧诱导的大鼠骨骼肌血管内皮生长因子的表达属早期速发效应，且存在强度阈值，其恢复速度与表达的幅度成反比，低练高住可能能增强骨骼肌对运动的适应。关键词：血管内皮细胞生长因子；低氧；低练高住；运动强度

By studying tumorigenesis in the Drosophila eye, here we identify two Polycomb group epigenetic silencers, Pipsqueak and Lola, that participate in this process.

现在，对果蝇眼睛所做的一项研究表明，两种核蛋白在遇到生长调节因子Delta的过度表达时，会起外因沉寂因子的作用，诱发转移性肿瘤的形成。

The primary work and remarks of the paper are as follows:(1) Stress intensity factors of gun barrel under inner pressure are obtained by finite element method. The accuracy of displacement method and stress method are compared. Some patterns of dynamic stress intensity factor are studied.

论文所做的主要工作和研究成果如下：(1)通过有限元方法计算了身管在内压作用下的应力强度因子，比较了位移法和应力法的精度，并且研究了动态应力强度因子的规律性。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。