A series of 2-(substituted phenyl)-3-[3-(2-oxo-2H-chromen-3-yl)-5-thioxo-1,5-dihydro-4H-1,2,4-triazol-4-yl]-1,3-thiazolidin-4-ones, 8a-n, were synthesized and evaluated for their antimicrobial activity. The structures of the compounds were confirmed on the basis of their elemental analysis and spectral data. Compounds 8k, 81 and 8m showed significant inhibition against S. aureus, compound 8m sh...

We introduce a novel and versatile approach for preparing self-assembled nanoporous multilayered films with tunable optical properties. Protonated polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) and anionic polystyrene-block-poly(acrylic acid) (PS-b-PAA) block copolymer micelles (BCM) were used as building blocks for the layer-by-layer assembly of BCM multilayer films. BCM film growth is go...

We construct a lattice Dirac operator of the overlap-type which describes the propagation of the Dirac fermion in an external gravitational field. The local Lorentz symmetry is manifestly realized as a lattice gauge symmetry, while the general coordinate invariance is expected to be restored only in the continuum limit. Our doubler-free Dirac operator obeys the conventional Ginsparg-Wilson rela...