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Characteristics of leaf electroscope and measurement of radiations
Get PDF"Charge and discharge characteristics of leaf electroscope were examined. When the leaf was charged with negative electric charge and exposed to frame, the closing time of the leaf was smaller than the case that the leaf was charged with positive electric charge, because the frame contains large proportion of positive ions. The dose rate of X?rays emitted from Krookes tubes used in Junior and Senior high schools for electron beam experiments can be measured with leaf electroscopes being kept in most of such schools. Therefore, the teachers can measure the dose rate by themselves without having rather expensive radiation measurement instruments.
The Extension of Cleft Constructions in Chinese and Japanese : With Special Reference to the Inheritance of Possessive Meaning
Get PDF"Within the framework of Construction Grammar (Goldberg 1995), constructions occurring in the same network are linked by inheritance relations and they can become polysemous through extensions from a prototype category. For example, there is a Chinese construction “you de shi X” (What they have is X). It is a combination of the possessive construction “you” and the cleft construction. Its meaning contains the information of large quantity as well as possession. However, the parallel construction in Japanese conveys the possessive meaning only. This study aims to investigate the differences in the extensions and the motivation of cleft constructions between Chinese and Japanese. The results reveal that the extension of construction in Chinese is more developed compared to Japanese. The differences in the motivation of extension depend on the rhetoric expressions of “you” and the metonymy of “de” in the Chinese cleft construction.
