Based on Multi-Activity Integrated Strategy to Screening,Characterization and Quantification of Bioactive Compounds from Red Wine

According to French Paradox, red wine was famous for the potential effects on coronary heart disease (CHD), but the specific compounds against CHD were unclear. Therefore, screening and characterization of bioactive compounds from red wine was extremely necessary. In this paper, the multi-activity integrated strategy was developed and validated to screen, identify and quantify active compounds from red wine by using ultra high performance liquid chromatography-fraction collector (UHPLC-FC), ultra fast liquid chromatography-quadrupole-time-of-flight/mass spectrometry (UFLC-Q-TOF/MS) and bioactive analysis. UHPLC-FC was employed to separate and collect the components from red wine, which was further identified by UFLC-Q-TOF/MS to acquire their structural information. Furthermore, the active fractions were tested for antioxidant activity, inhibitory activity against thrombin and lipase activities in vitro by the activity screening kit. As the results, there were 37 fractions had antioxidant activity, 22 fractions had thrombin inhibitory activity and 28 fractions had lipase inhibitory activity. Finally, 77 active components from red wine were screened and 12 ingredients out of them were selected for quantification based on the integration of multi-activity. Collectively, the multi-activity integrated strategy was helpful for the rapid and effective discovery of bioactive components, which provided reference for exploring the health care function of food.     

射程修正引信阻力器展开特性分析

射程修正引信利用阻力器增加弹丸阻力,从而改变弹道,提高打击精度。首先分析了阻力片在展开过程中的受力情况,然后在不同的条件下,采用Runge-Kutta方法分别计算了阻力片完全展开所用的时间及达到完全展开时的瞬间运动速度。计算得到的展开时间与转台试验高速摄影所得结果相符。对阻力片完全展开所耗时间进行仿真,结果表明阻力片完全展开所耗时间延迟并没有对整个射程修正精度造成影响。     

"五步探究模式"在中学地理活动课程中的应用

简述了活动课程在中学地理教学中所处的地位,提出了学习地理活动课程的“五步探究模式”,阐明了这种模式的主要特点、基本流程、具体应用及应用效果。     

用流媒体技术制作流式PPT课件

运用流媒体技术把PFT文件转化为远程教育课件的方法,可以很方便地将高校教师在平时教学中积累的大量教学课件资源转换成远程教育课件,从而提高工作效率。     

论地市级图书馆资源的发展趋势--电子阅览室构成趋势分析

通过电子阅览室构成趋势即读者群、体制及人员素质的分析,着重阐述了数字图书馆建设中电子资源的重要性及其发展的趋势。提出了电子图书馆发展的几点建议。     

地理信息系统40年来发展的哲学思考

在回顾地理信息系统40年来发展历程基础上,从哲学角度,分析了人类生产实践、现代科学技术及社会需求在地理信息系统产生与发展中的作用,揭示了地理信息系统发展过程中连续性与阶段性相统一和分化与综合相统一的发展规律．通过回顾与思考,旨在对当前的科学研究有所启示和帮助,进一步推动地理信息系统科学的发展．     

《植物地理学》教学资源库的设计与开发初探

针对《植物地理学》这门学科的特点,笔者设计并开发了《植物地理学》教学资源库,从地理教学角度对资源库的设计和开发进行了探讨．主要讨论了《植物地理学》教学资源库的设计思想、功能模块的设计与实现、媒体素材的选取、索引、网络课程的内容组织和题库系统的设计等问题．     

Simulation of flow problems with moving mechanical components,fluid–structure interactions and two-fluid interfaces

The application of a stabilized space–time finite element formulation to problems involving fluid–structure interactions and two-fluid interfaces is discussed. Two sample problems are presented and the method is validated by comparison with a test problem. © 1997 John Wiley & Sons, Ltd.     

An approximated principal component prediction model for continuous-time stochastic processes

In this paper, a linear model for forecasting a continuous-time stochastic process in a future interval in terms of its evolution in a past interval is developed. This model is based on linear regression of the principal components in the future against the principal components in the past. In order to approximate the principal factors from discrete observations of a set of regular sample paths, cubic spline interpolation is used. An application for forecasting tourism evolution in Granada is also included. © 1997 by John Wiley & Sons, Ltd.     

广靖锡澄高速公路沥青混凝土路面上面层关键技术

针对高速公路沥青混凝土路面上面层的配合比设计和施工工艺控制等问题,探讨了保证面层施工质量的相关关键技术,以提高沥青混凝土路面的施工质量,从而提高经济效益。