Rock permeability, defined as the ability of fluid to flow through rocks, is one most important properties rock. Many researchers have developed models predict permeability rock from porosity and pore size based on mercury intrusion. However, these existing still some limitations. In this study, data regarding fractal nature intrusion we built a new model rocks. order verify model, extracted di...

abstract studies have shown that birds due to being in the high trophic levels on the ecosystems, and also high sensitivity to toxic substances are a useful indicator for the evaluation of mercury pollution. the objective of the present study was to evaluate mercury level in the feathers of turdus philomelos and turdus merula in khanikan forests as an indicator of mercury contamination. to atta...

The structure of the pseudo-binary mercury chalcogenide alloy HgSe0.7S0.3 has been studied by X-ray and neutron powder diffraction at pressures up to 8.5 GPa. A phase transition from the cubic zinc blende structure to the hexagonal cinnabar structure was observed at P ∼ 1 GPa. A phenomenological model of this reconstructive phase transition based on a displacement mechanism is proposed. Analysi...

In analytical chemistry, silica gel plays a pre-dominant role in separation science. It is the most important stationary phase in chromatography and electrophoresis. Separation efficiency is directly dependent on the quality and physical properties of the chromatographic bed. Therefore, methods for the physicochemical characterisation of silica stationary phases have been developed over the pas...

A series of studies were carried out on 11 tight sandstone samples Upper Carboniferous in Ordos Basin. Firstly, the deposit composition and pore structure characteristics are investigated based analysis experiments including cast thin section scanning electron microscope high-pressure mercury intrusion nuclear magnetic resonance Then, combined with DP-P test, stress-dependent permeability chang...