Despite the abundance of shale-oil and tight-oil reserves in the Fengcheng Formation within the Mahu Sag, exploration and development efforts for both types of reservoir are still in their early stages.A comprehensive examination and comparison of the pore structures of these reservoirs can establish rational classification and evaluation criteria.
This paper deals with a marble head of Serapis, kept in the Grand Egyptian Museum (Gem.34206).The head was found in Diospolis Magna (modern Luxor); its height is about 46cm, while the width is 32cm.The head is well-preserved.It is carved in marble.The head is broken off from the bottom part of the neck, which indicates that the head probably belong
We consider flows on a closed surface with one or more heteroclinic cycles that divide the surface into two regions.One of the region has gradient dynamics, like Morse fields.The other region has Hamiltonian dynamics generated by the field of the Low Density Liners skew gradient of the simple Morse function.We construct the complete topological inv