papaver bracteatum lindly (papaveraceae) is an endemic species of iran which has economic importance in drug industries. the main alkaloid of the plant is thebaine which is used as a precursor of the semi-synthetic and synthetic compounds including codeine and naloxone, respectively. this systematic review focuses on main component of papaver bracteatum and methods used to determine thebaine. a...

The comparison of form factors calculated from a single-particle current in different relativistic quantum mechanic approaches evidences tremendous discrepancies. The role of constraints coming from space-time translations is considered here with this respect. It is known that invariance under these translations implies the energy-momentum conservation relation that is usually assumed to hold g...

chinese jujube (ziziphus jujuba mill.) has long been widely used for human consumption and medicinal purposes in china. it has been reported to possess several vital biological activities. however, the systematic study on the chemical constituents absorbed into plasma and their metabolites is still insufficient. a high-performance liquid chromatography-photodiode array detector-electrospray ion...