转化

Receptor system of transformation have developed from meristems to callus receptor ; and the gene transformation methods have made some progress.

香蕉转化受体系统已从茎尖发展到胚状体和愈伤组织受体系统，遗传转化方法也在不断改进，从单一的方法发展为根癌农杆菌感染法与基因枪法的结合。

The in vitro biotransformation of 6-CH3-HBP and 6-OH-HBP by rat liver microsomes was investigated by the developed GC/MS method.

利用已经建立的研究正丁苯酞体外代谢转化的GC/MS方法，进行了甲氧基、羟基取代丁苯酞在大鼠肝微粒体中的代谢转化研究。

The metabolism of AQ4N can actually occur in human tumor microsomes, which provide strong evidence for intratumoral turnover of prodrug in brain tumors.

AQ4N确实可以在肿瘤微粒体内进行转化，并且在原发性及转移性脑肿瘤内有差别，为前药肿瘤微粒体内的药物转化提供了一个很好的证据。

The relationship between multigrade proxy signature and multi-grade security information systems is discussed.

引入了多级代理签名的概念，讨论了多级代理签名与多级安全信息系统的关系，指出了将基本代理签名体制转化为多级代理签名体制的一般方法；介绍了前向安全签名体制的概念，分析了多级代理签名体制与前向安全签名体制之间相互转化的可能性，并由此得到了新的多级代理签名体制与新的基本代理签名体制。

Via basic and descriptor adverse transformation of matrix, an equivalent standard linear system is derived. Sufficient and necessary conditions are established for observers with disturbance decoupling and LTR in systems. Analysis showed that the necessary and sufficient condition for observers with LTR is disturbance decoupling to any undnown inputs. So it is con verted to the problem that observers are designed with disturbance decoupling.

通过矩阵的初等变换和广义逆变换，将非方广义系统等价地转化为正常状态空间的广义线性系统，并运用有关定理给出观测器具有干扰解耦和环路复现特性的充要条件，经分析可知，系统具有环路复现特性的充要条件是系统对于任何未知输入干扰解耦，则具有环路复现特性的干扰解耦观测器的设计问题转化为系统关于任何扰动都是解耦的。

Methods We introduce several major chemical reactions of microbialtransformation and the applications of microbialtransformation in synthesise of chiral drugs,metabolism of drugs and natural drug s by analysis of literatures about microbialtransformation base on many references.

方法在查阅国内外文献的基础上，简介了微生物转化的几种主要化学反应和微生物转化在手性药物合成、药物代谢及天然药物中的应用。

Using the same low concentration of cell but autoclaved or treated with sodium azide, approximately 83% of 0.5um CIET adsorbed within 3 to 5 min. Sorption of CIET to R01 seem to be passive, since dead cell sorbed as well as live cells.

菌株R02细胞提取物在1 小时内将90％CIET转化为水溶物，粗提物能在－70C下贮存几个月而不失活，但煮沸过的细胞提取物对CIET不起降解作用，这说明菌株R02的可溶酶能转化CIET。

The sightline control strategy for bad measure precision is developed, and the control methods for vertical direction, approach direction and station keeping are presented.(2)The safe approach velocities are investigated for cuboid, sphere and cone keep out zone.(3)The design method for optimal trajectory under safety constraint is developed. The cone and cuboid keep out zone can be described using line constraint, and then optimal trajectory design can be translated to line programming problem under line constraint.(4) The design strategy of collision avoidance maneuver is discussed, and the collision avoidance scheme is analyzed for V-bar and R-bar approach.The control and trajectory safety in departure phase are investigated.

1提出了测量误差较大时平移靠拢段的视线控制策略，给出了横向、纵向和悬停的控制方法；(2)针对长方体禁区、球形禁区和锥形禁区三种禁区形式，研究了V-bar逼近和任意方向逼近的纵向安全速度计算问题；(3)提出了安全约束下的最优轨迹设计方法，将冲量和有限推力作用下的最优轨迹设计问题转化为线性规划问题，并给出了将锥形和方形安全区域约束转化为标准线性约束的公式；(4)探讨了紧急避撞机动的设计策略，分析了V-bar和R-bar接近的紧急避撞机动方案。

The stability of exogenous plasmids introduced in BMB171 was correlated with the patterns of replicons, and sizes of plasmids.

用pHT3101、pBMB3305、pBMB1736、pBMB671、pBTL-1和pHV1249等6种外源质粒电转化无质粒突变株BMB171的转化频率，分别是Bt-4Q7、Bt-4D10和Bti。

A units name , and conversion factor to meters or radians.

一个单位名称以及转化为米或者弧度的转化因子。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。