A fourth-generation Ziegler-Natta catalyst was prepared to synthesize polypropylene (PP), which was stabilized by in situpolymerization employing lignin as antioxidant. The antioxidant properties of lignin were compared with those of the commercial antioxidant Irganox 1010. The presence of lignin in the reaction medium slightly decreased the catalytic activity of the reaction. The isotacticity ...

Tremendous progress has been made in identifying genes involved in pigmentation in dogs in the past few years. Comparative genomics has both aided and benefited from these findings. Seven genes that cause specific coat colours and/or patterns in dogs have been identified: melanocortin 1 receptor, tyrosinase related protein 1, agouti signal peptide, melanophilin, SILV (formerly PMEL17), micropht...

Background: Literature review shows that there are not sufficient data about polyphenolic compounds of peel of Iranian pomegranate. So, this work was mainlyundertaken to determine phenolic compounds and antioxidant activity of dried peel of Iranian pomegranate. Methods: Pomegranate fruits were obtained from mature fruits grown in Saveh, Iran and the Pomegranate Peel (PP) were dried with three ...

Mathematical programs with equilibrium (or complementarity) constraints, MPECs for short, form a difficult class of optimization problems. The feasible set has a very special structure and violates most of the standard constraint qualifications. Therefore, one typically applies specialized algorithms in order to solve MPECs. One prominent class of specialized algorithms are the relaxation (or r...

1. BEAUVIEUX.-Arch. d'Oihtal., Vol. XXXIX, p. 491, 1922. 2. BUSACCA.-Klin. Monatsbl. f..Augenheilk., Vol. LXXXIII, p. 737, 1929. 3. COLLINs.-Trans. Ophthal. Soc. U.K.', Vol. XXX, P. 127, 1910. 4. DUKE-ELDER.-Text-Book of Ophthalmology, Vol. II, p. 1353. Henry Kimpton, London. 1938. 5. ELSCHNIG.-Klin. Monatsbl. f. Augenheilk., Vol. LXIX, p. 732, 1922. 6. FEIGENBAUM.-Klin. Monatsbi. f. Augenheilk...