Design of virtual experiment based on agricultural drainage and nitrate loss
To react the properties of farmland drainage and nitrate loss and prompt the development of experimental teaching in farmland drainage and nitrate loss,the research designed 76 programs according the factors that influence farmland drainage and used DRAINMOD 6.0 to sum up the law of nitrate loss in farmland drainage.Also,we visualize the results and make the virtual teaching software based on visual programming software Macromedia Flash and Macromedia Dreamweaver.From the results of the experiment,we can see that the software is excellent,it realizes the rules of agricultural drainage and nitrate loss,also with the characteristics of easy-handling,straightforwardness,which is beneficial to the improvement and development of experimental teaching.
This article is to introduce FDA's(Food and Drug Administration,FDA)considerations of non-inferiority design used in anti-bacterial drug clinical trial.Non-inferiority study designs may be appropriate when there is adequate evidence of a defined effect size for the control treatment,so that the proposed non-inferiority margin can be supported.