In connection with the current situation that a large area of mature and overmature stand of poplar high-yielding forest need to be regenerated in the north of Shanxi,the grafting technology with stump is adopted by use of Populus×zhongjinnensis as the cuttings.

Geological characteristics of the Yangjin'gou scheelite deposit of Jilin and its ore genesis;

Choosing main alteration wallrocks in Yangjin'gou scheelite deposit as the research object,migration and enrichment of major and trace elements especially W,Mo and As,and REE constitution and variation features were studied systematically.

The Yangjin'gou scheelite deposit occurs in Wudaogou group of lower palaeozoic Erathem.

Comparison of the Photosynthetic Characteristics of Euonymus japonicus L. f. aureo-marginatus Rehd. and Euonymus japonicus L.;

Flashes of Thought in Loneliness——Comment on Lonely Watch by Yang Jinzhuan;

Geologic features and genesis of the Yangjingou scheelite deposit,Hunchun,Jilin Province;

Scheelite deposit ore-controlling factors and prediction in Yangjingou of Jilin Province;

Based on understanding and summarization regarding the basic geological characteristics of the Yangjingou scheelite deposit,this paper mainly discusses the major prospecting parameters,contrasts the new models with the previous ones.

YANG Jin-tu, one of the most important contemporary vocational education researchers, who has not only the experiences in vocational education administration and professional academic research, but also the experiences in founding, management and teaching of vocational education school.