植物开花光周期反应的分子调控机制   总被引：2，自引：0，他引：2  

沙爱华  王英  刘志文  蔡铭  袁平该  陈宪成 《华北农学报》2006,21(Z1):12-15

植物开花时间受到日照长短季节性变化的调节,拟南芥和水稻中与光周期反应相关基因的分离,使人们得以认识植物开花光周期反应的分子调控机制。植物感知日照长短的变化主要由CONSTANS(CO)基因的表达所控制。CO能够将光信号与生物钟信号整合,调节开花基因FLOWERING LOCUS T(FT)的表达,并最终控制植物的开花时间。本文对这一研究的最新进展进行了综述。  相似文献   

筹建中的研究所如何进行制度建设     

李晓粉  蔡胜忠  周日花 《热带作物学报》2014,(1):46-48

从筹建中研究所制度建设的必要性、应遵循的原则以及如何进行给予阐述,建议筹建中的研究所进行制度建设时应明确单位宗旨与目标;明确“立法”部门、成立专项工作小组;拟订制度建设方案;构建制度框架体系;注重制度之间的衔接贯通以及重点抓好制度的执行等。  相似文献   

Influence of Preparation Condition of Water-Based Magnetic Nanoparticles for Drug-Carrier on its Properties     

LIU Li ping  LI Ping  WU Ze zhi  CAI Shao xi  GU Li 《保鲜与加工》2002,(10):17

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Construction of Sustained Drug Delivery System for bFGF     

LI Shao-hong  CAI Shao-xi  LIU Bin  MA Kai-wang  LI Yuan  LI Xiao-fang 《保鲜与加工》2006,(12):111-115

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不同熔化速率下的电渣重熔过程数值模拟分析     

贺铸  蔡辉  刘双  王强  李宝宽 《保鲜与加工》2015,(5):104-111

电渣重熔能提高钢锭的质量,从而满足特种行业的需要,其过程伴随着复杂的物理现象,存在着磁流体流动、传热和传质以及电化学等多方面的影响。通过耦合电磁以及流动和温度方程对电渣重熔过程的三维瞬态进行了数学模拟,研究了熔化速率对重熔过程的影响。结果表明：电流密度、焦耳热和电磁力都随着熔化速率的增大而增大,当熔化速率由14.4 kg/h增加到27.0kg/h,电流密度、焦耳热和电磁力最大值的增大比例超过100%。随着熔化速率的增大,温度最大值有小幅的增加,而且速度最大值的增大幅度接近50%;金属熔池深度则由27 mm增大到38 mm,不利于保证铸坯的质量。  相似文献   

Vehicle Type Recognition by Using Support Vector Machine SVM     

XlAO Han-guang  CAI Cong-zhong  WANG Wan-lu 《保鲜与加工》2006,(1):61-65

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Regression Applied in Continuous Mathematical Forecast     

CAI Zhang-li  SHI Wei-ren  DIAO Ling 《保鲜与加工》2005,(10):91-93

Data Mining can distill the connotative, unknown and potential value information or pattern from many data. It is a problem that must be settled during the developing of Decision Support System how to discover knowledge from Data Warehouse. In order to realize the continuous mathematical forecast that will be used in the Marketing Decision Support System for Industrial Enterprise, the authors use the method of regression to discuss how to design the algorithm for Data Mining, how to design the model for Data Mining, and so on. When the algorithm applied to the sales forecast, the result processing to simulation data indicates it can realize the expected effect.  相似文献   

Study on Optimum Design of Rectangular Sedimentation Tanks     

CAI Jin-bang~  ZHU Liang~  DUAN Xiang-bao~ 《保鲜与加工》2005,(6):67-70

In this paper,the flow velocity fields,suspended solids concentration fields and flow-through curves in rectangular sedimentation tanks with different reaction baffles location,inlet horizontal velocity and length height ratio are simulated in detail using a developed mathematical model given in Reference 2.According to the numerical results,the influence of different reaction baffles location,inlet horizontal velocity and length height ratio on the operating efficiency is analyzed.Finally,the rational reaction baffles location,inlet horizontal velocity and length height ratio are presented.  相似文献   

Rectangular Cover System of Manifold Method and Its Auto Mesh Algorithm   总被引：2，自引：0，他引：2  

CAI Yong chang  ZHANG Xiang wei 《保鲜与加工》2001,(1):42-46

In contrast to the finite element method, another form of numerical method which is based on the using of rectangular math covers in manifold method is proposed. In this method, the element data is not a necessary in the input data files and it can be incorporated with the CAD technology conveniently. The theory and application of the method are discussed and the auto mesh algorithm of the cover system is also given in this paper. The numerical examples indicate that the method and the algorithm are accurate and effective.  相似文献   

Computer-aided Classification and Identification of Traditional Chinese Medicine Herbal Formula     

CAI Cong-zhong  YUAN Qian-fei  XlAO Han-guang  LIU Xing-hu  KONG Chun-yang 《保鲜与加工》2006,(10):42-46

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