因子

The balance of vasoconstrictor and vasodilator can maintain normal tension of blood vessel.

正常的血管张力要靠缩血管因子和舒血管因子之间的平衡来维护。

In addition, colosrum contain amino acid, immune gene, vegetal gene and benefit for people's health.

牛初乳是一种营养十分丰富的功能性食品，其常规营养远高于一般的乳品，此外它还具有多种氨基酸、免疫因子和生长因子，对人体有良好的保健功能。

Ception can enter the dorsal-most laminae I and II but not grow further ventrally. As for the waiting period and the correct projection of the NT- 3 (neurotrophin-3)sensitive Ia neurons and other neurons, it is possible that other guidance cues might make more contribution.

至于腹侧投射性的神经营养因子习（neurotrophin3，NT3）敏感性肌梭h类神经元和其它神经元轴突的等待期和定向投射，则更有可能是在其它类型的导向因子的共同参与下进行的［81

Objective To detect the expression of β-NGF, p75NTR and hair follicle stem cell specific markers in vibrissa hair follicle of rat embryo. Methods Using frozen section and immunohistochemistry to detect the expression of β-NGF and p75NTR.

目的 研究胚胎大鼠触须毛囊隆突区β-神经生长因子、p75神经营养因子受体(p75NTR)与毛囊干细胞特异标志物的表达规律。

The factors A and the rate constants are given at temperature range of 200-1200 K.The results in-dicate that the loss of aβ-hydrogen from 2-hydroxyethyl radical to yield vinyl alcohol and that a 1,3-hydrogen shift to form ethoxy radical have close A factors and rate constants.

用量子化学结果和Eyring过渡态理论计算了200－1200K温度范围内，标题反应的A因子和速度常数，结果表明，2－羟乙基脱去β－H生成乙烯醇与其经［1，3］重排生成乙氧基有相近的A因子和速度常数，且常温下速度较慢，反应难以进行。

Basic fibroblast growth factor is a potent mitogen for a variety of mesoderm- and neuroectoderm-derived cells and has been found in aqueous humor, vitreous and other ocular tissues.

碱性成纤维细胞生长因子（basic fibroblast growth factor bFGF）是对广泛来源于中胚层和神经外胚层细胞的有效促细胞分裂因子，已在房水、玻璃体和其它眼组织中发现。

Air temperature ground temperature and illumination affected tile daily activity rhythm of L. vivipara, and illumination as the most important affecting factor. The lizard began to come out when the relative illumination reached to 40%. Temperature mainly affected tile numbers of activities, and the activities peaks occurred when tile ground temperature was 23℃-32℃ arid air temperature 1% as 21℃-29℃.

气温、地表温度和光照因子对胎生蜥蜴日活动节律均有影响，其中光照为控制活动节律的主要因子，当相对光照强度达到40%左右时，胎生蜥蜴开始出来活动，而温度主要影响胎生蜥蜴的活动数量，当达到最适温度（地表温度23℃~32℃，气温21℃~29℃）出现活动高峰。

PRONY method can get the damping ratio of transient signals which can be used to predict and detect the early back corona failure efficiently, and this method makes up the deficiencies of ESP volt-ampere curve.

采用PRONY方法能够有效地抽取出ESP瞬态信号的阻尼因子，该阻尼因子能够有效的预诊ESP反电晕故障，弥补了ESP伏-安特性曲线以及人工判断方法的不足； 4。

By the attenuation of the scattering factor, UV reaching the Earth′s surface is 23.89 W·m-2 which contributes about 62.55% of surface UV.

华北地区受水汽因子和散射因子影响损失于大气中的UV分别为19.30、35.31 W·m-2，这一能量损失表现出明显的季节变化和地区差异。

First this paper analyzes and clarifies the statistical investigating data of winter migrant birds in Poyang lake in many years, and selects 44 samples on behalf of the main lake, this paper analyzes the birds community characteristic of abundant, variety, even, dominant and the meeting rate among the plant; this paper selects 10 environmental elements according to the reality of Poyang lake and selects the characteristic bird among rare plant, normal plant, wading bird, swimming bird etc, and.

本文首先通过对环鄱阳湖地区越冬候鸟多年调查统计数据的梳理和分析，筛选44个具有代表性主要湖泊作为样本，分析了各湖候鸟群落的丰富度、多样性、均匀性、优势度和种间相遇机率等特征；根据鄱阳湖实际选取10个环境因子，从稀有种、常见种、涉禽、游禽等方面结合选择具有代表性候鸟，进行了候鸟与湿地环境因子的相关关系分析。

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。