HI observations have revealed large gaseous extensions in interacting and merging systems. The interstellar gas is obviously dragged out in tidal tails during an encounter, and the percentage of HI in the tails increases with the merging stage. However, the opposite is true for the molecular gas, which is observed highly concentrated towards the nuclei of interacting galaxies, amounting to a si...

IGCC (Integrated Gasification Combined Cycle) technology is being developed to enable electricity to be generated at high efficiency and low emissions. Continuous improvement is essential to make IGCC reliable and costeffective. As environmental concerns over carbon emissions escalate, development of a practical carbon capture and storage (CCS) technology has become an important issue. Combinin...

More percentage of new productions in oil industry is from unconventional oil and gas such as oil shale, tar sand, laminated sand, tight oil (siltstone), tight gas, gas hydrate, and igneous rock, because the conventional oil and gas can no longer meet the need of the world. Researchers in response pay more attentions to the unconventional resources. Formation properties such as total organic ca...

A mosaic of 7 ROSAT PSPC pointed observations in the direction of (l, b ∼ 10◦, 0◦) reveals deep X-ray shadows in the 0.5 − 2.0 keV band cast by dense molecular gas. The comparison between the observed on-cloud and off-cloud X-ray fluxes indicates that ∼ 43% of the diffuse X-ray background in this direction in both the 34 keV and 1.5 keV bands originates behind the molecular gas, which is locate...

This application note highlights percentage level analysis of hydrogen on an Agilent Micro GC using a mixed carrier gas. Hydrogen is typically analyzed with argon carrier gas on a thermal conductivity detector. Argon however, will result in a decreased sensitivity for the other permanent gases. Helium carrier gas is, in most cases, also not a suitable alternative. Mixtures of helium and hydroge...

Based on currently available data from site measurements and the preliminary estimates of the gas production potential from the hydrate accumulations at the SH7 site in the Shenhu Area using the depressurization method with a single horizontal well placed in the middle of the Hydrate-Bearing Layer (HBL), the dependence of production performance on the permeabilities of the overburden (OB) and u...

Miscible gas injection is one of the most effective enhanced oil recovery techniques and minimum miscibility pressure (MMP) is an important parameter in miscible gas injection processes. The accurate determination of this parameter is critical for an adequate design of injection equipment investment prospect. The purpose of this paper is to develop a new universal artificial neural network (U-A...