生长物质

This paper presents a description of the brief synthesis of hexanoic acid 2-ethyl ester by new methods and its application. It takes two steps and 4.5 h to complete the synthesis of it.

己酸二乙氨基乙醇酯(DA 6)由美国科学家于20世纪90年代初首先发现的一种新型植物生长调节剂，具有高活性，低毒无污染、可与其它农化物质兼容的特点，它的合成与应用研究正日益受到人们的重视[1～7]。

Collagen has many useful features such as low antigenicity, controllable biodegradation, biological absorbable properties, haemostatic properties, ability to promote cellular growth and attachment.,which make it an excellent naturally occurring biomaterial, it has a wide application in medicinal industry and clinical medicine.

胶原蛋白是一种天然存在的具有很高利用价值的生物物质，其特有的极低的抗原性、可生物降解性、生物吸收性、止血性能和促进细胞生长的功能，使得近年来在医药工业和医学临床的研究和应用日益广泛。

However, the nodule could be induced by germfree liquid that filtered from the rhizobia, cultural medium. It is proposed that the some soluble substances excreted by the cultured rhizobia, can stimulate the plant to form the root nodules. Nevertheless, the nodules formed by this way can't produce haemachrome. So the nodules show light green or white. And there are starch in them.

但根瘤的形成还可由培养根瘤菌的无菌滤液诱导形成，这充分说明根瘤菌生长过程中分泌的某种可溶性物质具有刺激植物形成根瘤的作用，但这种根瘤由于不能形成豆血红蛋白而呈淡绿色或白色，且根瘤中有大量淀粉积累。

Gibberellic acid (GA3) had no effect on elongation of shoot and differentiation of leaves, but enhanced the dried weight of shoot.

赤霉素(GA3)对银杏茎尖伸长生长和叶片分化没有促进作用，但随着GA3浓度提高，茎尖干物质增加。

However,very often changes in the columnar growth direction and irregular terrigenous-rich intercalations into stromatolites characterize tectonically active settings such as in Vazante Group and in the western portion of the Paranoa and Bambui groups.

在柱状生长方向的频繁变化和不规则的丰富陆源物质的夹层进入叠层石，表征活跃的构造背景，例如在Vazante，Paranoá群和Bambui群的西部

Ghrelin is the endogenousli gand for the growth hormone secretagague receptor and at present,except that the growth hormone release hormone and somatostatin, endogenous material that the third regulation GH secreted.

Ghrelin是生长素促泌物受体(growth hormone secretagague receptor，GHS-R)的内源性配体，是目前为止除了生长激素释放激素和生长抑素外，第三个调节GH分泌的内源性物质。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。