Dense ceramic membranes with protonic and electronic conductivity have attracted considerable interest in recent years.In this paper,the powders of SrCe_(0.75)Z
A new compound,6-methylsulfinylthieno[3,2-g]-2,4(1H,3H)-pteridinedione,was isolated from the water extract of Whitmania pigra Whitman.Its structure was elucidat
A simple and sensitive flow injection spectrophotometric method is reported for the determination of vitamin E using potassium ferricyanide-Fe(Ⅲ detection syst