Ⅰ. INTRODUCTION It is well known that a lot of modes of periodical wave can propagate in magnetized plasma. In recent yearsit has been found that some of the modes can propagate as solitary waves, for example, ion-so...
Underground stems of ramie are usually used as materials for vegetative propagation. The extention of good varieties is limited owing to its low propagation coefficient. Especially, it is difficult to isolate and prop...