搜索结果: 1-9 共查到“理学 ribbon”相关记录9条 . 查询时间(0.089 秒)
Arrow ribbon graphs
Graphs on surfaces ribbon graphs Bollobas-Riordan polynomial Tutte polynomial duality virtual links arrow polynomial
2011/9/13
Abstract: We introduce an additional structure on ribbon graphs, arrow structure. We extend the Bollob\'as-Riordan polynomial to ribbon graph with this structure. The extended polynomial satisfies the...
Invariants of Spin Networks from Braided Ribbon Networks
Spin Networks Braided Ribbon Networks General Relativity and Quantum Cosmology
2011/7/26
Abstract: We connect Braided Ribbon Networks to the states of loop quantum gravity. Using this connection we present the reduced link as an invariant which captures information from the embedding of t...
Invariants of Braided Ribbon Networks
Braided Ribbon Networks evolution move General Relativity and Quantum Cosmology
2011/7/26
Abstract: We present a consistent definition for braided ribbon networks in 3-dimensional manifolds, unifying both three and four valent networks in a single framework. We present evolution moves for ...
The focusing of electron flow in a bipolar Graphene ribbon with different chiralities
focusing of electron flow different chiralities
2010/11/22
The focusing of electron flow in a symmetric p-n junction (PNJ) of graphene ribbon with different chiralities is studied. Considering the PNJ with the sharp interface, in a armchair ribbon, the electr...
The parity of specular Andreev reflection under mirror operation in zigzag graphene ribbon
parity of specular Andreev reflection mirror operation
2010/11/25
It is known that the parity of reflection amplitude can either be even or odd under the mirror
operation. Up to now, all the parities of reflection amplitude in the one-mode energy region are even un...
Flare Ribbon Expansion and Energy Release
Sun activity—Sun flares chromosphere corona X-rays gamma rays
2010/9/16
We report a detailed examination about the relationship between the evolution of the Hα flare ribbons and the released magnetic energy during the April 10 2001 flare. In the Hα images, several bright ...
A "bright narrow ribbon snaking its way through the sky" is just one of the puzzling features of the first all-sky maps of the edge of the solar system made by NASA’s Interstellar Boundary Explorer (I...
Flare Ribbon Expansion and Energy Release
Sun:activity Sun:flares chromosphere corona X-rays gamma rays
2009/5/7
We report a detailed examination about the relationship between the evolution of the Hα flare ribbons and the released magnetic energy during the April 10 2001 flare. In the Hα images, sever...
A Subsurface Ribbon of Cool Water over the Continental Shelf off Oregon
Subsurface Ribbon Cool Water Continental Shelf off Oregon
2009/3/26
Observations of the hydrographic regime over the continental shelf off Oregon from the R/V Yaquina during the summer of 1972 showed the presence of an alongshore, subsurface ribbon of relatively cool ...