基于多信号流模型的雷达BIT测试能力分析  

Optimization of Steam Explosion Assisted Extraction of Flavonoids from Ginkgo Biloba Leaves by Response Surface Methodology

作　　者：张兵兵[1] 曾国明[1] 傅亚[1,2] 张茂兰[1] 宁欣强[1] 

机构地区：[1]重庆大学生物工程学院生物流变科学与技术教育部重点实验室国家“985工程”生物材料与仿生工程研究中心,重庆400044 [2]重庆科技学院生物系,重庆401331

出　　处：《纤维素科学与技术》2012年第1期39-44,71,共7页Journal of Cellulose Science and Technology

基　　金：重庆市科技攻关项目（CSTC2009AB5174）; “重大新药创制”科技重大专项（2010ZX09401-306-3-5）

摘　　要：多信号模型是一种简单而有效的系统建模表示方法,提出基于多信号流模型的雷达BIT进行验证方法。介绍多信号流模型的定义和表示,分析运用该模型对雷达模块（电路）的建模、相关矩阵简化、对其测试性功能实现原理进行了解析,并以某型雷达截获控制电路为例进行验证。结果表明,多信号模型能给出一个全面的测试性评定结论,对系统测试性分析具有价值。In this study,Ginkgo Biloba leaves was pretreated by using the newly steam explosion to improve the yield of extraction of flavonoids.Based on the single factor experiments,the effects of steam explosion pressure,temperature and solid-liquid ratio on Ginkgo Biloba leaves were investigated by response surface methodology.A mathematical model was established and analyzed to describe the relationships between the studied factors and the response of the yield of flavonoids.The optimum pretreatment parameters were as follows： Steam explosion pressure of 0.38 MPa,steam explosion time of 235 s,solid-liquid ratio for 1∶15.Under the optimum conditions,the yield of flavonoids was higher about 2.1 fold than that tradition extraction method.

关 键 词：多信号流模型 雷达BIT 测试性分析 

分 类 号：TQ352.62[化学工程]