The structures of the 4 asparagine-linked carbohydrate units of aand P-subunits of human chorionic gonadotropin (hCG-a and hCG+) have been determined by carrying out the structural investigations on the tryptic glycopeptides (uT-8, aT-lla, p-2, and pT-3 (Bellisario, R., Carlsen, R. B., and Bahl, 0. P. (1973) J. Biol. Chem. 248, 6796-6809; Carlsen, R. B., Bahl, 0. P., and Swaminathan, N. (1973) ...

the combination of graphene (gr) and nickel oxide nanoparticles (nio nps) yields nanostructured electrochemical sensor formed a novel kind of structurally uniform and electrocatalytic activity material. in cyclic voltammetry (cv) studies, in the presence of ep, nio/gr composite modified electrode shows a significantly higher current response for ep oxidation. based on differential pulse voltamm...

Introduction: The use of arsenic contaminated water can cause a variety of adverse health effects in humans. Therefore, it is essential to seek out a method to remove arsenic more efficiently. This study examined the amount of arsenic oxidation by response surface methodology (RSM) based on Box-Bencken design. Materials and Methods: In this study, oxidizing arsenite to arsenate was performed b...

Ether-protecting functions at C-2 hydroxy groups have been found to play participating roles in glycosylations when the reactions are conducted in nitrile solvent mixtures. The participation mechanism is based on intramolecular interaction between the lone electron pair of the oxygen atom of the C-2 ether function and the nitrile molecule when they are positioned in a cis configuration. A 1,2-c...