Studies on metabolism of total glucosides of paeony from Paeoniae Radix Alba in rats by UPLC‐Q‐TOF‐MS/MS

Total glucosides of paeony are the active constituents of Paeoniae Radix Alba. In this study, a novel strategy was proposed to find more metabolites and the differences between paeoniflorin, albiflorin and total glucosides of paeony (TGP). This strategy was characterized as follows: firstly, the animals were divided into three groups (paeoniflorin, albiflorin and TGP) to identify the source of TGP metabolites from paeoniflorin or albiflorin; secondly, a generic information‐dependent acquisition scan for the low‐level metabolites was triggered by the multiple mass defect filter and dynamic background subtraction; thirdly, the metabolites were identified with a combination of data‐processing methods including mass defect filtering, neutral loss filtering and product ion filtering; finally, a comparative study was used in the metabolism of paeoniflorin, albiflorin and TGP. Based on the strategy, 18 metabolites of TGP, 10 metabolites of paeoniflorin and 13 metabolites of albiflorin were identified respectively. The results indicated that the hydrolysis, conjugation reaction and oxidization were the major metabolic pathways, and the metabolic sites were the glycosidic linkage, the ester bond and the benzene ring. This study is first to explore the metabolism of TGP, and these findings enhance our understanding of the metabolism and the interactions of paeoniflrin and albiflorin in TGP. Copyright © 2015 John Wiley & Sons, Ltd.     

PXI在测控系统中的应用

随着有关PXI总线的规范和产品的推出，由于优良的性能指标和适宜的价格，使其受到各相关行业的广泛关注。对风洞测控系统的结构和系统配置作了具体的阐述，并对PXI总线在具体使用中的效果和特点作了较详细的介绍。     

高校图书馆数字化与现代化服务

互联网改变了图书馆的运作方式，网络已成为高校图书馆信息采集、存储和传播的主要途径。介绍了高校图书馆数字化与现代化服务的主要内容，对高校图书馆数字化与现代化服务的功能与特点、技术关键、对策与措施及发展趋势进行了深入的探讨。     

Earthquake Resistant Engineering and Application of Seismic Zonation Map of China

China is a country with high seismieity. It is very important for industry and structure to fortify against earthquakes. In this paper the outline of seismicity in China, the criteria for fortification against earthquakes and the contents of seismic zonation map of China are described. The contents of seismic safety evaluation for major construction projects, such as large dams, large bridges, long distance pipe lines for transporting oil and natural gas, nuclear plants, petrochemical enterprises and so on, are presented. Some geological disasters caused by destructive earthquake, such as earthquake-caused collapse and landslide, liquefaction of saturated soll and earthquake fault and so on, are also presented. Preventive countermeasures for these disasters are discussed.     

APCI5000电气自动化成套装置设计

电气自动化成套装置种类繁多，并广泛应用于电力系统．结合现场实际商业运行期所积累的经验，并根据市场预测以及目前工控机发展动态，提出了采用APCI5000工业控制计算机实现电气自动化成套装置设计的最佳方案．     

LaMnO3不同晶位掺杂的磁电阻效应

基于研究钙钛矿型氧化物磁电阻效应的目的,采用固相反应法制备了实验所需的单相多晶样品,主要就La位二价金属离子掺杂和稀土互掺及Mn位掺杂对LaMnO3磁电阻影响的实验结果作比较研究,发现La位稀土互掺对磁电阻的影响可以用晶格效应来解释,并明确指出La位和Mn位掺杂是提高和调制钙钛矿型锰氧化物超大磁电阻效应的一种有效途径.     

碳钢膏剂无孔渗硅工艺的研究

本研究用膏剂法进行无孔渗硅研究,透射电镜、电子探针和M351腐蚀仪分析证实:获得了致密、无孔隙、具有良好耐磨性和耐腐蚀性的渗硅层,并分析了渗硅层形成机理及表层疏松层以及内部孔隙成因。     

Spectral boundary controllability of networks of strings

In this Note we give a necessary and sufficient condition for the spectral controllability from one simple node of a general network of strings that undergoes transversal vibrations in a sufficiently large time. This condition asserts that no eigenfunction vanishes identically on the string that contains the controlled node. The proof combines the Beurling–Malliavin's theorem and an asymptotic formula for the eigenvalues of the network. The optimal control time may be characterized as twice the sum of the lengths of all the strings of the network. To cite this article: R. Dáger, E. Zuazua, C. R. Acad. Sci. Paris, Ser. I 334 (2002) 545–550.     

线性双向联想存储器

提出了一个线性双向联想存储器的模型，一组有限个向量对由一线性算子建立起双向联想关系，此线性算于是一个网络的联结权重矩阵。该权矩阵由最小二乘法决定。由权矩阵的解导出一特殊类型的Ｌｙａｐｕｎｏｖ矩阵方程．本文提供了这种Ｌｙａｐｕｎｏｖ矩阵方程的解。     

论企业技术创新战略

从技术创新的涵义人手,对增强企业技术创新的意识、建立企业技术创新机制、加大企业技术创新的投入、提高企业技术创新人员的素质、营造企业技术创新文化、建立国家技术创新体系等作了系统的战略性论述.