Influence of medium components on elastase production using crude sources by<Emphasis Type="Italic">Bacillus</Emphasis> sp. EL31410

A newly isolated strain EL31410, producing elastase (E. C3. 4. 4. 7) with high elastolytic activity was identified asBacillus sp. In the medium optimization, it was found that wheat bran and soybean flour hydrosate were the best crude carbon and nitrogen source for enzyme production, respectively. Addition of corn steep flour can affect the bacterium growth and elastase production. A fractional factorial design was applied to study the main factors that affect the enzyme production, and central composite experimental design and response surface methodology were adopted to derive a statistical model for the effect of wheat bran and soybean flour hydrosate on elastase production. The experimental results showed that wheat bran had positive effect but soybean flour hydrosate had negative effect, on enzyme production. An initial concentration of 3.4% (w/v) wheat bran and 9.4% (v/v) soybean flour hydrosate were found to be optimal for enzyme production in batch culture. The time course of elastase production in the optimized medium composition was also described. Project (No. 300024) supported by the Zhejiang Provincial Natural Science Foundation of China     

复旦大学图书馆"信息共享空间"调查问卷分析

通过对复旦大学师生进行“信息共享空间”问卷调查,并根据调查数据分析读者对“信息共享空间”建设内容和服务方式等方面的实际需求,以此为出发点对即将建设的新校区信息共享空间提供决策依据,为构建“以用户为中心”的信息共享空间打下基础。     

汇川H2U系列PLC之间RS-485通信的实现

主要研究了汇川公司H2U可编程控制器(PLC)的通信技术,实现了两个H2U系列PLC之间基于RS-485的通信,并详细介绍了PLC之间通信的硬件连接方式、通信串口参数配置、触摸屏画面的设计以及程序实现。所讨论的方法已在采用H2U PLC及辅助设备组建的"运动控制系统"课程的教学实验平台上进行了验证,可以拓展应用于多台H2U PLC之间以及其他设备与H2U PLC之间的RS-485通信实现,对工程应用具有一定的借鉴意义。     

国内外高校国书馆应用SNS的比较研究

文章首先介绍了国内外高校图书馆利用SNS的概况,然后总结了国内高校图书馆应用SNS的模式,最后对国内高校图书馆应用SNS的策略进行了分析.     

Information Literacy and the Evolving MBA Degree

MBA program curriculums have been the target of criticism since the financial scandals of the early 2000s, with the main focus being that many programs sacrificed the teaching of useful, real world skills in favor of impractical scientific research, while also neglecting areas such as ethics and social responsibility. The financial collapse prompted many MBA programs to implement reforms which include adding experiential learning programs among other changes. These reforms provide opportunities for librarians to introduce or increase information literacy components in the programs. The current state of MBA information literacy practices is discussed, with several initiatives highlighted and some new approaches suggested.     

参量匹配滤波器和向量自回归滤波器的等价性

分析了自适应匹配滤波器和向量自回归(VAR)时域白化滤波器. 结果表明,通过最小化用误差平方之和估计的均方误差得到的参量滤波器系数和通过相同阶数的多通道最小二乘法得到的VAR滤波器系数是等价的. 此外,还分析了VAR滤波器最小二乘估计器的渐进性能,分析了滤波器的运算量和杂波抑制性能.     

Focus on a New Approach in College Reading Instruction-Collaborative Strategic Reading(CSR)

As an attempt to seek more reliable and valid methodology to enhance traditional college reading classes in China,the paper aims to explore an instructional approach named Collaborative Strategic Reading(CSR) based on the analysis of current college reading instructions,the suitability of CSR applied in authentic teaching context as well as pedagogical recommendations attempted to present practicable concept for college reading instructions.     

"你这(个)+NP"结构的多角度考察

汉语中的"你这(个) NP"这一特殊结构形式,具有很浓的口语色彩和很强的表现力,可以从三个层面对它进行分析考察。句法上,它与"把"字句的句法特征有关联;语义上,它主要表达说话人内心的愤怒和强烈不满;语用上,它主要用于面对面的对话中,既具有指称功能,又具有表情功能。     

港口吞吐量抽样调查方案设计

讨论了抽样调查在港口吞吐量调查中的应用前景，分析了港口吞吐量抽样调查方案设计的各个环节，包括：方案设计的原则、技术方法、抽样公式、调查时间、分层确定、季节变动处理和非抽样误差控制等。     

提高软件质量的有效途径——个体软件过程(PSP)

信息时代,软件质量的重要性越来越为人们所认识,个体软件过程(PSP)为提高软件质量提供了具体而有效的途径.本文主要介绍了PSP的相关技术,讨论了PSP的质量管理,阐述了CMM/PSP/TSP的体系结构.