2008: Recent submissions

Now showing items 1-20 of 172

Thermal degradation and crystallisation studies of reactively compatibilised polymer blends

Jose, S; Thomas, S; Biju, P k; Peter Koshy; Karger-Kocsis, J (Elsevier, 2008)

The thermal degradation and crystallisation behaviours of polyamide12/isotactic polypropylene (PA12/PP) blends were studied. Effects of blend ratio and compatibiliser concentration on the thermal degradation properties of ...
Ionic conductivity in new perovskite type oxides: NaAZrMO(6) (A = Ca or Sr; M = Nb or Ta)

Deepthi, N R; Ravindran Nair, K; Prabhakar Rao, P; Sibi, K S; Peter Koshy; Vaidyan, V K (Elsevier, 2008)

New oxides of the type, NaAZrMO(6) (M = Ca or Sr; M = Nb or Ta), have been prepared by the solid-state reaction technique. Phase identification by powder X-ray diffraction (XRD) shows that NaCaZrMO6 has orthorhombic ...
Design of two-dimensional biomimetic uranyl optrode and its application to the analysis of natural waters

James, D; Mary Gladis, J; Pandey, A K; Naidu, G R K; Prasada Rao, T (Elsevier, 2008)

A two-dimensional biomimetic optrode for the detection and quantification of uranium in natural waters was fabricated. The sensing element was designed by the inclusion of uranyl ion imprinted polymer particles into ...
Nanostructural and surface morphological evolution of chemically sprayed SnO2 thin films

Chacko, S; Philip, N S; Gopchandran, K G; Peter Koshy; Vaidyan, V K (Elsevier, 2008)

Physical properties of a nanocrystalline thin film is greatly influenced by its morphological and structural evolution. We try to understand the transition of SnO2 thin films from amorphous to nanocrystalline structure ...
Chemical switch based reusable dual optoelectronic sensor for nitrite

Vishnuvardhan, V; Kala, R; Rao, T P (Elsevier, 2008)

An optical sensor was developed for sensing of nitrite based on the monotonous decrease in absorbance of Rhodamine 6G at 525 nm (the absorbance maximum of dye) with increasing concentration of nitrite. This sensor also ...
An efficient synthesis of indolo[3,2-a]carbazoles via the novel acid catalyzed reaction of indoles and diaryl-1,2-diones

Vijay Nair, G; Vidya, N; Abhilash, K G; Suresh, E (Royal Society of Chemistry, 2008)

A mild and efficient one pot method for the synthesis of indolo[3,2-a] carbazole derivatives by the para-toluenesulfonic acid catalyzed condensation of indole with acyclic 1,2-diones is described. With cyclobutene-1,2-diones ...
Studies on modulation of DNA integrity in Fenton's system by phytochemicals

Benherlal, P S; Arumughan, C (Elsevier, 2008)

Chronic exposure to oxidative stress especially to highly reactive hydroxyl radicals (HO(center dot)) could damage biomolecules, particularly DNA, that in turn would accelerate onset of degenerative diseases. In the present ...
An ecofriendly approach to process rice bran for high quality rice bran oil using supercritical carbon dioxide for nutraceutical applications

Balachandran, C; Mayamol, P N; Shiny, T; Divya, S; Sundaresan, A; Arumughan, C (Elsevier, 2008)

An integrated approach to extraction and refining of RBO using supercritical carbon dioxide (SC-CO2) in order to preserve the nutritionally important phytochemicals is reported here. Process variables such as pressure, ...
Semi-preparative HPLC preparation and HPTLC quantification of tetrahydroamentoflavone as marker in Semecarpus anacardium and its polyherbal formulations

Aravind, S G; Ranjith Arimboor; Meena Rangan; Soumya, N M; Arumughan, C (Elsevier, 2008)

Application of modern scientific knowledge coupled with sensitive analytical technique is important for the quality evaluation and standardization of polyherbal formulations. Semecarpus anacardium, an important medicinal ...
Production and characterization of partially purified thermostable alpha-galactosidases from Streptomyces griseoloalbus for food industrial applications

Anisha, G S; Rojan P John; Nicemol, J; Niladevi, K N; Prema, P (Elsevier, 2008)

Solid-state fermentation was carried out for the production of extracellular alpha-galactosidase by Streptomyces griseoloalbus. Soybean flour was the best solid substrate for alpha-galactosidase production. In flask-level ...
Facile synthesis of alkylidene cyclopentenes via palladium catalyzed ring opening of fulvene derived bicyclic hydrazines

Anas, S; Sajisha, V S; Jubi John; Nayana Joseph, J; Sholly, C G; Radhakrishnan, K V (Elsevier, 2008)

A facile synthesis of substituted alkylidene cyclopentenes through a palladium catalyzed ring opening of fulvene derived bicyclic hydrazines with various organometallic reagents is described. The products are versatile ...
Synergistic effect in photocatalysis as observed for mixed-phase nanocrystalline titania processed via sol-gel solvent mixing and calcinations

Zachariah, A; Baiju, K V; Shukla, S; Deepa, K S; James, J; Warrier, K G K (American Chemical Society, 2008)

Mixed-phase nanocrystalline titania (TiO(2)) With varying rutile content has been synthesized via solvent mixing and calcination (SMC) treatment of sol-gel-derived nanocrystalline anatase-TiO(2) and rutile-TiO(2) precursors. ...
Photophysical properties of core-modified expanded porphyrins: Nature of aromaticity and enhancement of ring planarity

Yoon, Min-Chul; Misra, R; Yoon, Z S; Kim, K S; Lim, J M; Chandrashekar, T K; Kim, D (American Chemical Society, 2008)

We have investigated the excited-state dynamics and nonlinear optical properties of representative core-modified expanded porphyrins, tetrathiarubyrin, tetraselenarubyrin, pentathiaheptaphyrin, tetrathiaoctaphyrin, and ...
Effect of Dy substitution at the sr site on the critical current density and flux-pinning properties of (Bi, Pb)-2212 superconductor

Vinu, S; Sarun, P M; Shabna, R; Biju, A; Guruswamy, P; Syamaprasad, U (Wiley, 2008)

The effect of substitution of the rare earth Dy on the critical current density and flux-pinning properties of (Bi, Pb)-2212 system prepared by a solid-state synthesis in bulk polycrystalline form was studied. Phase analysis, ...
Improved microstructure and flux pinning properties of Gd-substituted (Bi,Pb)-2212 superconductor sintered between 846 and 860 degrees C

Vinu, S; Sarun, PM; Shabna, R; Biju, A; Syamaprasad, U (Elsevier, 2008)

The influence of sintering temperature on microstructural and superconducting properties of Gd-substituted (Bi,Pb)-2212 superconductor was investigated. It is found that the microstructure of the system can be tailored and ...
Toroidal nanoobjects from rosette assemblies of melamine-linked oligo(p-phenyleneethynylene)s and cyanurates

Yagai, S; Mahesh, S; Kikkawa, Y; Unoike, K; Karatsu, T; Kitamura, A; Ajayaghosh, A (Wiley, 2008)
Recent advances in carbon-carbon bond-forming reactions involving homoenolates generated by NHC catalysis

Vijay Nair, G; Sreekumar, V; Babu, B P (Royal Society of Chemistry, 2008)

Homoenolate, a species containing anionic carbon beta to a carbonyl group or a moiety that can be transformed into a carbonyl group, is a potential three carbon synthon. Recent introduction of a protocol for the generation ...
Theoretical studies on the carcinogenicity of polycyclic aromatic hydrocarbons

Vijayalakshmi, K P; Suresh, C H (Wiley, 2008)

The distinct molecular regions of a set of 28 polycyclic aromatic hydrocarbons (PAHs) showing varying degrees of carcinogenic activity (CA) have been analyzed on the basis of their calculated molecular electrostatic potential ...
Synthesis of highly functionalised linear pentacyclic compounds from Baylis-Hillman adduct of heteroaldehydes with azomethine ylides via [3+2] cycloaddition

Shanmugam, P; Suchithra, M; Baby Viswambharan; Vaithiyanathan, V (CSIR, 2008)

Montmorillonite K10 clay promoted one-pot synthesis of penta- and tetracyclic systems from Baylis-Hillman adduct of heteroaldehydes with azomethine ylides generated from ninhydrin and proline or sarcosine via [3+2] ...
Theoretical studies on the carcinogenic activity of diol epoxide derivatives of PAH: proton affinity and aromaticity as decisive descriptors

Vijayalakshmi, K P; Suresh, C H (Royal Society of Chemistry, 2008)

A comparative study between bay-region and nonbay-region diol epoxide (DE) derivatives of seventeen carcinogenic polycyclic aromatic hydrocarbons (PAHs) was carried out using the B3LYP/6-31G(d, p) level of density functional ...

Now showing items 1-20 of 172

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