1. COLORIMETRIC DETECTION OF SINGLE - AND DOUBLE-STRANDED DNA ON GOLD NANOPARTICLES. Authors: S. BOCA, S. ASTILEAN, O. POPESCU, I. LUPAN.2. PHOSPHORUS EFFECT ON THE TEXTURAL PROPERTIES OF SOL-GEL Si2O-CaO-P2O5 BIOACTIVE GLASS SYSTEM. Authors: K. MAGYARI, L. BAIA, O. POPESCU, S. SIMON.3. SOLID STATE NMR PRELIMINARY STUDY ON ARCHAELOGICAL BONES. Authors: R.F.V. TURCU, O. POPESCU, S. SIMON.4. STUDY OF LYOPHILIZED FIBRINOGEN, COLLAGEN AND SERUM ALBUMIN BY FOURIER TRANSFORM INFRARED SPECTROSCOPY. Authors: K. MAGYARI, L. BAIA, O. POPESCU.