Among the conducting polymers, Polyaniline and its derivatives have been studied extensively in the last decade with improvements in processing having the key role in establishing the intrinsic electrical properties. In the present paper, the camphor sulphonic acid [CSA] doped Poly (o-toluidine) [POT] was prepared using chemical oxidative polymerization method. The prepared CSA doped POT was ch...

A most effective and less energy demanding method of producing fatty esters, diol esters, by esterifying fatty acids, with neopentyl and ethylenglycol alcohols in the presence of an acidic ion exchange resin catalyst(polyestyrendivinylbenzensulfated) was investigated at elevated temperature. In this process an azeotroping agent, toluene, was used to facilitate continuous removal of water by dis...

IN THE TITLE COMPOUND [SYSTEMATIC NAME: 5-(5,7-dihydr-oxy-4-oxo-4H-chromen-yl)-2-hydroxy-benzene-sulfonic acid dihydrate], C(15)H(10)O(8)S·2H(2)O, the benzopyran-one ring is not coplanar with the phenyl ring, the dihedral angle between them being 41.35 (3)°. No H atom was placed on the sulphonic acid group because it was not possible to distinguish between the two S=O bonds and the S-O bond. In...

Two phenolics, 1,2,6-trigalloylglucose (1) and 1,2,3,6-tetragalloylglucose (2), isolated from the stem-bark of Juglans mandshurica were evaluated for their antioxidative activities. The results showed that compounds 1 and 2 exhibited strong scavenging activities against 1,1'-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis-(3-ethylbenzenthiazoline-6-sulphonic) acid (ABTS(*+)), and superoxide ra...

The course of polymerization of individual brain microtubules could be observed with a light microscope employing dark-field illumination. Statistical analysis of the increase in microtubule length during the polymerization was in accordance with the time course of viscosity change of the tubulin solution. After a plateau level in viscosity was attained, there was no significant change in histo...

Labeled avidin-biotin (LAB) enzyme-linked immunosorbent assay (ELISA) was applied to detect Japanese encephalitis OE) antibody in swine sera. Purified laGAr-01 vaccine of lE, biotin labeled anti-swine Ig or IgM rabbit IgG conjugate and horseradish peroxidase (HRP) were employed in the assay. The f1 chain specific anti-IgM conjugate could detect only IgM antibody, but the anti-Ig conjugate could...

Deposition and stripping of lead ions at thiol based disorganised monolayer modified gold piezoelectrodes was studied by cyclic voltammetry (CV) and electrochemical quartz crystal nanobalance (EQCN). Gold electrodes modified with 3-mercaptopropionic acid and 1,3-dimercapto propane sulphonic acid were studied. Due to the proximity of the potentials for the Pb deposition and thiol reductive desor...