The Coulomb potential is derived in " one space-one time " dimension, and introduced into Dirac and Klein-Gordon equations. The equations are solved, and somewhat surprising result-nonexistence of bound state solutions in the lower dimension-discussed and identified as another fine example of the " Klein paradox " .
Aminopeptidase N (APN; CD13; EC 22.214.171.124) is a zinc-dependent membrane-bound exopeptidase that catalyzes the removal of N-terminal amino acids from peptides. APN is known to be highly expressed on renal cortical proximal tubules. APN expression levels are markedly decreased under the influence of nephrotoxins and in the tumor regions of renal cancers. Thus,… (More)
Application of organophosphorus compounds in biomedicine is attractive because the (31)P nucleus is very amenable to study by nuclear magnetic resonance (NMR) techniques, particularly, by in vivo (31)P magnetic resonance spectroscopy ((31)P-MRS). The water-soluble organophosphorus compounds that are non-toxic, exhibit metabolic stability, and show a unique… (More)
Once the renormalization point is choosen near the value of quark masses, a power-correction contribution to the standard effective Hamiltonian has to be added. It is found that such corrections might. considerably influence the E'/E ratio.