By treatment with both ultraviolet rays and licl , a mutant strain b . s . lx - 19 with high yield of heparinase and stability was obtained , whose enzyme activity increased by 40 % over strain lx - 10 Lx ? 19 ,其肝素酶产量较出发菌株提高了40 。通过单因素条件研究,发现n源和c源对酶产量影响较大,接种量以10 ,初始ph6 . 5 ,种龄12h为宜。
A novel heparinase - producing strain was screened and isolated from siol samples . the strain was identified as bacillus subtilis , by testing physiological - biochemical and morphologic characteristics . we name it lx - 10 以枯草芽孢杆菌为对照,并辅以大肠杆菌,经形态观察和生理生化实验,初步鉴定该菌株为枯草芽孢杆菌( bacillussubtilis ) 。
Collision - free path planning based on artificial potential field for the object carried is presented . then according to the kinematics relatives between the object and two manipulators the tool point path in endeffector of each manipulator is obtained 、八lx了三rs儿esis体为突破口,基千人工势场规划物体的无碰路屈然后根据荫操作臂与物体之间的运动学关系获得双臂末端执行器工具点的路径。
Azo / tiopc = 8 / 2 , cgm / ctm / po1 / 120 / 120 , ( ? / 2 ) " 15oonm = 3 . 3333 ( lx . s ) - 1 , ( ? / 2 ) ? 762 . 5nm = 3 . 3333 ( lx . s ) - 1 ) . chapter iii focused on the description of the physical mechanisms associated with the synergetic enhancement and complementary effects observed in chlorodiane blue azo / tiopc composite photoreceptors 本论文第三章阐明了以氯丹蓝偶氮/酞菁氧钛复合光生材料制备的单层光导体的光敏性协同增强效应和互补效应产生的机制。
The hot dry rock geothermal energy is a r . ew clean energy and have excellent development prospects , but is not yet exploited on large - scale in our country then to mankind : the theories and technique of the heat extraction all belong to the new task in the new field , and already have a strong appeal to the international technology worker , and already have obtain certainly achievement , on the basis of study by our predecessors , this paper do the as follows work , acquire the following main result : lx present a many fields coupling mathematics model for solid - flow - heat of 3d blocked medium in hdr 高温岩体地热是我国以至人类尚未大规模利用而又极具广阔开发远景的新的洁净能源,对其进行开发利用的理论与技术都属于新型领域的新型课题,已经吸引了大批的国内外科技工作者的投入,并取得了一定的成果。在前人研究的基础上,本文做了如下工作,获得了如下主要成果: 1 、建立了高温岩体地热开发的块裂介质固、流、热多场耦合数学模型,模型控制方程包括完全耦合的变形方程、渗流方程、热传导与对流方程,描述了热储层的非线性特性。
The pixel size of p + / n - well / p - sub structure is 100 umx 100 n m , fill factor is 77 . 6 % . it can obtain target information with illuminance intensity in the range of 0 . 011x ~ 98 , 0001x , and the sensor photoelectric sensitivity is 35v / lx ? s . when the method of changeable reset frequency double scanning is used , the photoelectric dynamic range can be 139 . 8db , which is high in the 0 . 6 um level cmos image sensors already reported 在对感光单元进行器件物理结构优化的研究中,通过采用深结深光电管结构,提高了传感器的感光响应,其中p m阶”衬底结构的传感器面积为100umx100urn ,感光面积百分比为77石,可对0刀98 , 000lx照度的目标信号进行传感,感光灵敏度大于3sv ix ? s ,采用了变频两次扫描后,动态范围可达139
The phenomenon of vitrification phenomenon is a big obstruction in the propagantion of carnation by tissue culture , the effective way to decrease the vitrification phenomenon is to increase the concentration of sucrose and agar in the medium , to use strong luminosity of 10000 - 20000 lx , and to decrease the concentration of hormone 摘要香石竹试管苗玻璃化现象给试管苗的应用带来困难,采用强光照10000 - 20000lx ,在培养基中提高蔗糖和琼脂浓度,降低激素用量,对克服香石竹试管苗玻璃化有明显效果。
Containers must be redelivered clean . note permissible weight limits for road and rail transport . the technical details of 1cctank container for yellow phosphorus : working pressure : 0 . 4mpa test pressure : 0 . 6mpa external dimensions ( lx w x h ) mm : 6058 x 2438 x 2591 maximum gross : 30480 kg stacking height : 9 x 30480 kg insulation 这种罐箱容量大,密封性能好,使用周期长,抗振强度高,不易被损坏,操作方法实用;而我国现在使用的250l塑料桶,其回收或处理成本高,且污染环境,所以iso1cc黄磷罐式集装箱是一种理想的替代塑料桶的贮运设备。
Firstly , the equilibrium solution is global asymptotic stability and exponential stability on l2 [ 0 , l ] under neumann and dirichlet boundary control conditions , control inputs for choosing the boundary control is bounded in lx , the equilibrium solutions decay to zero and integrating the solution square in [ 0 , 1 ] , it decays to zero exponentially , by using nonlinear boundary control conditions and input feedback control method 首先,采用非线性边界条件输入反馈控制方法,研究得到该类方程在neumann和dirichlet边界控制条件下的平衡解在l _ 2 [ 0 , 1 ]上是全局渐近稳定和指数稳定的、在所选边界控制下控制输入是l _有界的、平衡解随时间衰减到零以及平衡解的平方在[ 0 , 1 ]上的积分按指数方式衰减到零。