Fractal study of scale effect in microscopic,mesoscopic and macroscopic states for fracture mechanism of rock materials;

The macroscopic property of the material differs from its microcosmic property greatly,the existing macroscopic theory is usually no longer suitable under the condition of the mesocosmic or microscopic view.

The microscopic oil production mechanism and macroscopic oil production mechanism are discussed in this paper, the main origin for the existing remaining oil in the round of injectors is analyzed.

The Macro-Survey for 《Research and Application in Remote Sensing and Monitoring over Jiulong River Watershed Eco-environment》Project;

This paper introduces the current actuality of the study of residual oil distribution in the world,addresses the technology of the study from the points of both micro and macro scale: the micro scale study includes physical modeling and computer modeling;and the macro scale study includes logging interpretation,3D seismic and flow unit division.

Based on the measurement of macro mechanical properties and surface microhardness,and the analysis of dislocation structure and micro-fracture of 45# steel in different periods of fatigue,the changing rulers of macro mechanical properties(elasticity,plasticity and strength)and meso mechanical property with cycles during fatigue damage were investigated systematically.

While the contradict of microcosm and macrocosm is emphasized,the integration of them should be presented in order to make students get a more precise understand.

This article illustrates by the specific examples that the integral formula of Gauss s law when having insulator is a macrocosm formula under a certain condition and it can t explain microcosm.

Methods-the microstructure and macro morphology changes at different processing condition were determined through digital cameral,metallographic microscope,scanning electro microscope.