Lighthydrocarbons are commonly used to evaluatecrude oils to determine oil families in reservoirs undergone some kind of alteration process. In this study crude oil contentsfromNorthwestern IranDelta (samples A, B and C)were analyzed in order to evaluate the IranDelta petroleum system independent of higher molecular weight markers. Ultra high resolution gas chromatography was used in separation...

the aim of the present research was to study the effects of weak cation exchange resins, polacrilex with exchangeable h+ and polacrillin potassium and strong cation exchange resin sodium polystyrene sulfonate on water uptake behavior of ranitidine hydrochloride. drug resin complexes (drc) were prepared and evaluated for the percentage of moisture gain when placed in a humidity chamber at 40e2 °...

A new and powerful visible-light-induced difunctionalization of the C-C σ-bond alkylidenecyclopropanes via a ring-opening process was developed. Importantly, acyl chlorides are used as both Cl sources. This strategy provides an effective route for bond with radical Cl− to construct C-Cl in one pot. In addition, it has wide range substrates can tolerate various functional groups.