Carbon (?13C) and hydrogen (?2H) compound-specific isotope analyses on sedimentary hydrocarbons are widely used for ecological reconstructions oil-source rock or oil-oil correlations. However, the effects of thermal alteration isotopic composition not fully understood, potentially imparting a bias interpretation older more mature sequences. We measured ?13C ?2H n-alkanes in 23 extracted bitumen...

Numerous studies have been done to determine the hydrocarbon potential of Malaysia’s formations and basins due need identify more conventional or unconventional resources. Due fact that none these investigations were carried out with any prior knowledge in relevant regions potential, some them did not, however, yield expected results. This study aims provide researchers all necessary informatio...

Tight sandstone gas (TSG) reservoirs develop extensively in the upper Paleozoic coal bearing strata both southern North China Basin and Ordos Basin. The former has not achieved important advances TSG exploration, while latter built largest production facility China. By comparing accumulation conditions Tongxu area of Fuxian Basin, main controlling factors were analyzed this article. results ind...

In this paper we consider a problem of enhancement of amateur photos damaged by backlighting for printing. The purpose of correction is to make photos more pleasant for an observer. Photos with exposure problems and with poorly distinguishable details in dark areas are main subject of our research. Our approach is based on contrast stretching and alpha-blending of both brightness of the initial...

Abstract The thermal effect caused by deep magma intrusion can not only accelerate the metamorphism of coal body, but also bring additional field that changes mechanical environment seams, thereby affecting permeability seams. Different from shallow resources, resources are in a characterized limited stress and strain. Thus, has more significant influence on distribution characteristics In this...

Abstract Four coal samples from Jharia basin, India are treated with nitric acid in glacial acetic and aqueous media to find out the chemical, petrographic spatial structure of organic mass by X-ray diffraction (XRD) Fourier Transform Infrared Spectroscopy (FTIR) techniques. parameters like interlayer spacing ( d 002 ), crystallite size L c aroamticity f a average number aromatic layers N rank ...

Abstract The low to medium-rank Tertiary coals from Meghalaya, India, are explored for the first time their comprehensive microstructural characterization using FTIR and Raman spectroscopy. Further, results these compared with Permian medium high-rank understand restyling during coalification its controls on hydrocarbon generation. coal samples grouped based mean random vitrinite reflectance va...

in this research, cobalt and nickel sulfide nanoparticles (nps) were grown on almcm-41 matrix by using ion exchange method. the prepared samples were irradiated by thermalized neutron that emitted from am-be source up to fluencies (7.9+e9n/cm2). after that, x-ray diffraction (xrd), uv-vis spectroscopy, fourier transform infrared (ftir), scanning electron microscopy (sem) and transmission electr...