Mathematical modeling of the sulfuric acid concentration process’ kinetics in electrochemical treatment of sulphate-containing eluates

The research exposes results obtained in sulphate-containing eluates electrochemical treatment using two-chamber anion exchange membrane MA-41electrolyzer. It is shown that the concentration of sulfuric acid can be increased by electrolysis up to 40%. The research included study of current voltage influencing the process’ effectiveness. The heterogeneous processes mathematical models at Delphi 7 environment are used to calculate the kinetic parameters of sulfuric acid solutions electrochemical processing using two-chamber electrolyzer divided with anionic membrane MA-41 into two sections. Based on the calculated rate constants, pre-exponential factor and activation energy authors obtained the Arrhenius equation

Assembly of VP26 in herpes simplex virus-1 inferred from structures of wild-type and recombinant capsids

The 1250 A diameter herpes simplex virus-1 (HSV-1) capsid shell consists of four major structural proteins, of which VP26 (approximately 12,000 M(r)) is the smallest. Using 400 kV electron cryomicroscopy and computer reconstruction, we have determined the three-dimensional structures of the wild-type capsid and a recombinant baculovirus-generated HSV-1 capsid which lacks VP26. Their difference map demonstrates the presence of VP26 hexamers attached to all the hexons in the wild-type capsid, and reveals that the VP26 molecule consists of a large and a small domain. Although both hexons and pentons are predominantly composed of VP5, VP26 is not present on the penton. Based on the interactions involving VP26 and the hexon subunits, we propose a mechanism for VP26 assembly which would account for its distribution. Possible roles of VP26 in capsid stability and DNA packaging are discussed