http://nopr.niscair.res.in/handle/123456789/516 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/2572 Title: Conductimetric and amperometric study of the bromate-phenol-sulphuric acid oscillating reaction <br/> <br/>Authors: Cortés-Salazar, Fernando; Suárez, Marco F; Barragán, Daniel <br/> <br/>Abstract: The bromate-phenol-sulphuric acid chemical reaction that exhibits sequential oscillations has been studied by conductivity measurements and ultrasonically enhanced chronoamperometric methods. Oscillatory behaviour is observed in conductivity and current on a working electrode at different potentials. The experimental results have been qualitatively analyzed and compared to a computer simulation using the GVKFR mechanism for uncatalyzed chemical reactions. <br/> <br/>Page(s): 1775-1779 http://nopr.niscair.res.in/handle/123456789/2568 Title: Conductance and solvation behaviour of benzimidazolium dichromate in dimethyl sulphoxide-water mixture <br/> <br/>Authors: Radhika, V; Manikyamba, P <br/> <br/>Abstract: Conductance of benzimidazolium dichromate has been measured in dimethyl sulphoxide-water mixtures of varying compositions in the temperature range 283-313K. The limiting molar conductance, Λօ, and the association constant of the ion pair, KA, have been computed using Shedlovsky equation. Λօ increases with increase in the proportion of water in the solvent mixture. KA is found to be maximum in the solvent containing 20-40% (v/v) water. The free energy of solvation, ΔGi-s, is maximum in 80% (v/v) water suggesting that the ion-solvent interactions are maximum at this composition of solvent mixture. <br/> <br/>Page(s): 1814-1817 http://nopr.niscair.res.in/handle/123456789/2567 Title: Thermodynamic and transport properties of binary liquid mixtures of phenylacetonitrile with some aliphatic amines at 308.15 K <br/> <br/>Authors: Bachu, Ranjith Kumar; Patwari, Murali Krishna; Syeda, Asra Banu; Boodida, Satyanarayana; Tangeda, Savitha Jyostna; Nallani, Satyanarayana <br/> <br/>Abstract: Excess molar volumes and deviations in viscosity have been measured for some aliphatic amines in phenylacetonitrile from density and viscosity measurements at 308.15 K. The amines chosen for present study are diethyl amine, propyl amine, diisopropyl amine, butyl amine and t-butyl amine. All properties are fitted to the Redlich-Kister type polynomial using multi-parametric non-linear regression analysis to estimate the binary coefficients and standard errors. Other parameters like excess Gibbs free energy of activation of viscous flow, and Grunberg-Nissan interaction parameter are also utilized in the qualitative analysis to elicit the specific interactions. <br/> <br/>Page(s): 1809-1813 http://nopr.niscair.res.in/handle/123456789/2566 Title: Surface plasmon resonance based biosensor for label free detection of cholesterol <br/> <br/>Authors: Gehlot, Rakhee; Sharma, Kavita; Mathew, Manoth; Kumbhat, Sunita <br/> <br/>Abstract: A surface plasmon resonance based biosensor has been proposed for a simple, label-free, highly selective and sensitive detection of cholesterol employing the flavoenzyme, cholesterol oxidase, as the sensing element. The immobilization of cholesterol oxidase conjugated with bovine serum albumin on to the gold sensor chip has been accomplished by covalent binding through an activated self-assembled 11-mercaptoundecanoic acid monolayers. The surface morphology of the biosensor has been recorded using atomic force microscopy. Sensitivity of 1.41mº/mg dl⁻¹ of cholesterol has been achieved using the biosensor. The biosensor is highly specific for cholesterol and shows no significant interference from potent interferents such as ascorbic acid and uric acid. <br/> <br/>Page(s): 1804-1808