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International Forum Draws Attention to Shanghai's Rapid Growth and Promising Future-An Interview with Gong Xueping,Deputy Secretary of the Shanghai Municipal Party Committee
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作者 AN LI 《China Today》 1999年第9期13-14,共2页
关键词 International Forum Draws Attention to Shanghai’s Rapid growth and Promising Future-An Interview with Gong Xueping Deputy Secretary of the Shanghai Municipal Party Committee
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A possible mechanism for the formation of annual growth lines in bivalve shells 被引量:1
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作者 LIU XiaoJun YAN ZhenGuang +4 位作者 ZHENG GuiLan ZHANG GuiYou WANG HongZhong XIE LiPing ZHANG RongQing 《Science China(Life Sciences)》 SCIE CAS 2011年第2期175-180,共6页
We report a unique shell margin that differed from the usual shell structure of Pinctada fucata.We observed empty organic envelopes in the prismatic layer and the formation of the nacreous layer in the shell margin.Al... We report a unique shell margin that differed from the usual shell structure of Pinctada fucata.We observed empty organic envelopes in the prismatic layer and the formation of the nacreous layer in the shell margin.All the characteristics of the growing margin indicated that the shell was growing rapidly.To explain this anomaly,we propose the concept of "jumping development".During jumping development,the center of growth in the bivalve shell jumps forward over a short time interval when the position of the mantle changes.Jumping development explains the unusual structure of the anomalous shell and the development of annual growth lines in typical shells.Annual growth lines are the result of a discontinuity in the shell microstructure induced by jumping development. 展开更多
关键词 bivalves shell microstructure internal growth bands the prismatic layer the nacreous layer
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