Based on the structure informations provided in the GC × GC/SCD and GC × GC/TOFMS chromatograms, the distribution rule of sulfur-containing compounds in the GC × GC/FID chromatogram of an LCO sample was deduced.
The gas phase oxidative cracking (GOC) processes of model compounds, such as hexane, cyclohexane, benzene, decane, decalin and tetralin, were investigated in this dissertation.
In light of Brenti's work on certain R-polynomials, this formula raises interesting questions about the possibility of relating Ext groups between Weyl modules to Kazhdan-Lusztig combinatorics.
Light microscopy revealed compressed villi, oedema, mononuclear cell filtration, and vacuolization on the cytoplasm of epithelial cells in the jejunum of hyperlipidemic rats.
A seaweed-chamber experiment was performed, indicating that gaseous I2 is one of the important precursors that lead to new particle formation in the presence of solar light in the ambient air at the coastal tidal area.
This paper presents the results regarding changes in chemical composition of light crude oil during simulated short-term weathering based on natural environmental conditions.
The results show that the saturated hydrocarbons of the light crude oil mainly distribute between n-C8 and n-C23 and the most abundant n-alkanes are found in the n-C10 to n-C16.
The ratios n-C17/pristane and n-C18/phytane are unaltered and can be used to identify the source of the light crude oil during the first 8 d of weathering.
The separation of low pour point fractions from Yu-Men light lubricating oil cut by the method of adsorption using silica gel,aluminum oxide,active clay and active carbon as adsor- bents,and by the method of thermal diffusion was investigated. Adsorption on silica gel,aluminum Oxide and active clay,only a small portion with lower pour point was obtained,while the pour points of larger portions are higher than that of the original stocks.It was found that active carbon,especially the Fushun active carbon is ...
A new process for producing roofing asphalt from petroleum residua by steam cracking and condensation has been studied in the laboratory. Three different stocks, i. e. Shengli and Renqiu vacuum residua and PDA asphalt of Renqiu vacuum residue,were used.Experiments were carried out in a 5 liter reactor at temperature 400 to 415℃ under atmospheric pressure and in the presence of superheated steam, while the reaction time was selected according to the softening point of the asphalt. Besides the roofing asphalt...