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召口分矿废石干式充填方法的应用 被引量:1
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作者 于亦亮 庞曰宏 郭斯旭 《有色金属(矿山部分)》 北大核心 2003年第1期11-12,共2页
本文主要介绍4种废石干式充填方法,阐述了废石干式充填与水石充填的优缺点。
关键词 空区 废石干式 翻充 接触交代型矽长岩磁铁矿床
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Weak type heterodimensional cycle bifurcation with orbit-flip 被引量:4
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作者 LU QiuYing ZHU DeMing GENG FengJie 《Science China Mathematics》 SCIE 2011年第6期1175-1196,共22页
In this paper, we study the weak type heterodimensional cycle with orbit-flip in its non-transversal orbit by using the local moving frame approach. For the first two subcases, we present the sufficient conditions for... In this paper, we study the weak type heterodimensional cycle with orbit-flip in its non-transversal orbit by using the local moving frame approach. For the first two subcases, we present the sufficient conditions for the existence, uniqueness and non-coexistence of the homoclinic orbit, heteroclinic orbit and periodic orbit. Based on the bifurcation analysis, the bifurcation surfaces and the existence regions are located. And for the third subcase, we theoretically established both the coexistence condition for the homoclinic loop and the periodic orbit and the coexistence condition for the persistent heterodimensional cycle and multiple periodic orbits due to the weak type of the transversal heteroclinic orbit. Moreover, an analytical example is presented for this subcase. 展开更多
关键词 local moving frame weak heterodimensional cycle orbit-flip
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