With the rapid development of unconventional oil and gas, pore structure characterization shale reservoirs has attracted an increasing attention. High pressure mercury intrusion porosimetry (HPMIP) been widely used to quantitatively characterize tight shales. However, obtained from HPMIP could be significantly affected by sample particle size for analyses. This study mainly investigates influen...

The underground gas storage (UGS) in depleted sandstone reservoirs forms the largest proportion of UGS market China. Multiple cycles natural injection and production cause rapid increase drawdown pore pressure, which may induce damage to rock skeleton structure, complex fluid flow paths reservoir. In this paper, transverse relaxation time (T2), nuclear magnetism resonance imaging, high-pressure...

Air pollutants can be transported to the pristine regions such as Tibetan Plateau, by monsoon and stratospheric intrusion. The Plateau region has limited local anthropogenic emissions, while this is influenced strongly transport of heavy emissions mainly from South Asia. We conducted a comprehensive study on various air (PM2.5, total gaseous mercury, surface ozone) at Nam Co Station in inland P...

We introduce a new approach to simulate a virtual mercury intrusion porosimetry (MIP) using neither skeleton computing nor seed-growing methods. Most of the existing methods to determine local pore sizes in a porous medium require to compute the skeleton of the pore space. However, the skeleton computation is a very time consuming process. Instead, our approach uses a particular spatial enumera...

The micro-pore structure of a tight sandstone reservoir remarkably impacts the occurrence characteristics oil. Jiyuan Chang 8 in Ordos Basin was examined this research using core physical property test, an environmental scanning electron microscope, thin section identification, and high-pressure mercury intrusion. Using nano-CT nuclear magnetic resonance technologies, representative samples wer...

Although there is no definite dividing line between normal and abnormal blood pressure, the World Health Organization has proposed cetain criteria defining high blood pressure for classification purposes. Under these proposals, a systolic blood pressure below 140mm. of mercury and a diastolic blood pressure below 90mm. of mercury would be called normal. A systolic pressure of 140-159mm. of merc...

The properties of ionic liquids on ordered and non-ordered mesoporous silicas (silica gel, MCM-41, SBA-15) were studied by nitrogen sorption, mercury intrusion and thermogravimetric analyses, as well as (129)Xe-NMR spectroscopy. The ionic liquids investigated are based on the 1-hexyl-3-methylimidazolium cation, which was combined with anions of low (bis(trifluoromethanesulfonyl)imide; [NTf2](-)...

The application of automated blood pressure measurement during exercise has been limited by inaccuracies introduced by the effects of accompanying motion and noise. We evaluated a newly developed automated blood pressure monitor for measuring exercise blood pressure (Colin STBP-680; Colin, San Antonio, Texas, USA). The STBP-680 uses acoustic transduction with the assistance of the electrocardio...