Objective:After the screening and identification of microbial species that lived in corn steep liquor(CSL),sereval major strains were analysed for its functions used in CSL preservation.Method:Observed the changes of CSL after the strains added to CSL with microbial agents complex at different fermentation period in a summer season of Henan province.Result:The addings of microbial agents complex could decrease the reducing sugar content(23%,40h)in CSL and increased the probiotics to 1.5×108 cfu /mL.Conclusion:The B.coagulans and S.cerevisiae combination(0.1%)were suitable for the CSL preservation.
In this paper,we reported a investigation about the bacteria and yeasts lived or contaminated in the corn steep liquor(CSL).After the separating and purifying manipulation,we identified 7 species of bacteria and 2 species of yeasts that were the main contaminating livings of the CSL based on the microscopic properties and 16SrDNA/18SrDNA/ITS sequences blast.This study is valuable for the CSL production and conservation engineering.
A general purpose AC motor driver control testing table based on digital signal processor was introduced in there.With the modularization and opening system structure,lots of research and exploiture motor control testing were accomplished in this testing table.
The fast prototype is most basically used to design system project and test hardware quickly and easily. It can avoid many weakness of the literal criterion and improve the item's inheritable character and continuity because it adopts the frame diagram construction which is easily understood to describe the whole system. In particular, it is introduced primarily the realization of the collection and process of digital signal based on software Matlab and digital signal processor C6000. In addition, automatic code generator is applied to combine software Matlab with C6000 and it realizes the connection between high-level arithmetic and applied hardware of digital signal process which provides a favorable means to prophase development and arithmetic validity of the item.
环境测控系统是为了满足特殊环境的需求而进行设计的系统,由于采用了CAN总线技术,使系统结构大幅简化,而测控精度却大幅提高.通过介绍PCI-CAN控制器卡的设计及其驱动程序的开发,详细阐述了CAN总线技术的特点及其应用优势,论述了其在实际中的应用前景.
