2012: Recent submissions

Now showing items 121-140 of 169

4,4,9,9-Tetraphenyl pyrroloindolizine: a structural analogue of calix[2] pyrrole

Gowri Sreedevi, K C; Ajesh P Thomas; Ramakrishnan, S; Salini, P S; Derry Holaday, M G; Reddy, M L P; Srinivasan, A (RSC Publishing, 2012)

Synthesis, spectral and structural characterization of a pyrroloindolizine derivative having structural similarity with calix[2]pyrrole is described. Here, two pyrrole rings are connected with two meso-carbon atoms having ...
Evaluation of mechanical hardness and fracture toughness of Co and Al co-doped ZnO

Siddheswaran, R; Mangalaraja, R V; Avila, R E; Manikandan, D; Esther Jeyanthi, C; Ananthakumar, S (Elsevier, 2012-12-15)

Combustion synthesized nanocrystalline Co and Al co-dopedZnO powders[(Zn1 x yCoxAlyO; x¼0.04,0.03, 0.02; y¼0.01, 0.02,0.03)]were fabricated into cylindrical discs by uni-axial pressing and sintered intentionally at 1000 ...
Biochemical characterization of recombinant methionine aminopeptidases (MAPs) from Mycobacterium tuberculosis H37Rv

Sai Shyam, N; Nampoothiri, K M (Springer, 2012)

Methionine aminopeptidase (MAP) performs the essential post-translational N-terminal methionine excision(NME) of nascent polypeptides during protein synthesis.To characterize MAP from Mycobacterium tuberculosis,two ...
Nimbolide retards tumor cell migration, invasion, and angiogenesis by downregulating MMP-2/9 expression via inhibiting ERK1/2 and reducing DNA-Binding activity of NF-kB in colon cancer cells

Suboj, B; Priya, P S; Nandini, R J; Suresh Kumar, M A; Mangalam S Nair; Priya Srinivas; Srinivas, G (Wiley, 2012-06)

Nimbolide, a plant-derived limonoid has been shown to exert its antiproliferative effects in various cell lines. We demonstrate that nimbolide effectively inhibited proliferation of WiDr colon cancer cells through inhibition ...
Microwave dielectric properties of Flexible butyl rubber–strontium cerium titanate composites

Chameswary, J; Thomas, D; Subodh, G; Soumya, H; Philip, J; Sebastian, M T (Wiley, 2012-05-15)

Butyl rubber–strontium cerium titanate (BS) composites have been prepared by hot pressing. The tensile tests show that the BS composites are flexible. The dielectric properties of the composites have been investigated at ...
Potentiometric sensing of iodide using polymeric membranes of microwave stabilized Beta - AgI

Dhanya James; Prasada Rao, T (Elsevier, 2012-04-01)

A polymer based heterogeneous ion selective electrode (ISE) membrane was fabricated for the potentiometric sensing of iodide. The sensing element used for the preparation of the ISE membrane was microwave stabilized -AgI. ...
High temperature pretreatment and hydrolysis of cotton stalk for producing sugars for bioethanol production

Binod, P; Kuttiraja, M; Archana, M; Janu, K U; Sindhu, R; Rajeev K Sukumaran; Pandey, A (Elsevier, 2012-02)

The aim of this work was to evaluate cotton stalk (waste plant material after harvesting the cotton) as feedstock for bioethanol production. Different pretreatment strategies were tried using sodium hydroxide in a high ...
Synthesis, crystal structure and photophysical properties of lanthanide coordination polymers of 4-[4-(9H-carbazol-9-yl)butoxy]benzoate: The effect of bidentate nitrogen donors on luminescence

Shyni Raphael; Reddy, M L P; Vasudevan, K V; Cowley, A H (RSC Publishing, 2012-12-28)

A new aromatic carboxylate ligand, 4-[4-(9H-carbazol-9-yl)butoxy]benzoic acid (HL), has been synthesized by the replacement of the hydroxyl hydrogen of 4-hydroxy benzoic acid with a 9-butyl-9H-carbazole moiety. The anion ...
DFT study on the mechanism of water-assisted dihydrogen elimination in group 6 octahedral metal hydride complexes

Sandhya, K S; Suresh, C H (RSC Publishing, 2012)

The reaction of water with octahedral bis-, tris- and tetrakis-( phosphine)tungsten, (phosphine)-molybdenum and (phosphine)chromium complexes has been studied using B3LYP/def2-TZVPP level of DFT to elucidate dissociative, ...
Production of powerful antioxidant supplements via solid-state fermentation of wheat (Triticum aestivum Linn.) by cordyceps militaris

Zhang, Z; Guoying, L V; Pan, H; Fan, L; Soccol, C R; Pandey, A (University of Zagreb, 2012-01)

The present study has been conducted to evaluate the antioxidant properties of fermented wheat (Triticum aestivum Linn.) extracted using acidified water, 70 % acetone and 70 % ethanol as compared to uninoculated control. ...
Photocatalytic activity enhancement in doped titanium dioxide by crystal defects

Jaimy, K B; Safeena, V P; Ghosh, S K; Hebalkar, N Y; Warrier, K G K (RSC publishing, 2012)

Visible light sensitive Fe3+ and Ce4+ co-doped nano TiO2 photocatalyst has been prepared by a modified aqueous sol–gel method and the activity has been measured in terms of degradation of MB dye. Both dopants shifted the ...
Room temperature relaxor ferroelectricity and spin glass behavior in Sr2FeTiO6 double perovskite

Neenu Lekshmi, P; Savitha Pillai, S; Suresh, K G; Santhosh, P N; Manoj Raama Varma (Elsevier, 2012-05-05)

The structure, dielectric and magnetic properties of complex Sr2FeTiO6 double perovskite have been investigated. Reitveld analysis of X-ray powder diffraction pattern reveals that the material is stabilized in a cubic ...
Optical effects near metal nanostructures: towards surface-enhanced spectroscopy

Reshmi Thomas; Jatish Kumar; Swathi, R S; George Thomas, K (Current Science Association, 2012-01-10)

The trapping of light at the surfaces of nanomaterials gives rise to regions of enhanced electric fields around the nanostructures, leading to enormous optical crosssections for molecules in the vicinity. The finite ...
A novel low temperature synthesis route for SmFeAsO1−xFx bulk superconductor with improved transport properties

Anooja, J B; Aswathy, P M; Sarun, P M; Syamaprasad, U (Elsevier, 2012-02-15)

Polycrystalline bulk samples of SmFeAsO1−xFx with 0 ≤x≤0.4 are synthesized at a temperature as low as 850 ◦C using a partially reacted precursor. The temperature dependence of resistivity and ac susceptibility measurements ...
Influence of dy addition on the magnetocaloric effect of La0.67Ca0.33Mn0.9V0.1O3 ceramics

Nisha, P; Savitha Pillai, S; Suresh, K G; Manoj Raama Varma (Elsevier, 2012-01)

The influence of partial substitution of Laby Dy on the magnetocaloric response of(La1 xDyx)0.67-Ca0.33Mn0.9V0.1O3, where x¼0.03, 0.15and0.25 is studied.Rietveld refinement ofX-ray diffraction pattern using GSAS method ...
DPPH Radical scavenging activity of tricin and Its conjugates isolated from “Njavara” rice bran: A density functional theory study

Ajitha, M J; Smitha Mohanlal; Suresh, C H; Jayalekshmy, A (American Chemical Society, 2012)

Structural, electronic, and energetic characteristics of tricin, tricin 4′-O-(erythro-β-guaiacylglyceryl)ether (TEGE),and tricin-4′-O-(threo β-guaiacylglyceryl)ether (TTGE), isolated from “Njavara” rice bran have been ...
Aminopeptidase from streptomyces gedanensis as a useful tool for protein hydrolysate preparations with improved functional properties

Raji, R; Dhar, K S; Nampoothiri, K M; Pandey, A (Institute of Food Technologists, 2012)

The aim of the present study was to evaluate the efficiency of amino peptidase (AP) from Streptomyces gedanensis to produce protein hydrolysates (PHs) with better antioxidant, nutritional, and functional properties and to ...
Photoluminescence characteristics of new stannate pyrochlore based red phosphors: CaLaSnNbO7: Eu3+

Mahesh, S K; Prabhakar Rao, P; Mariyam Thomas; Radhakrishnan, A N; Peter Koshy (Springer, 2012-09)

New stannate pyrochlore based red emitting phosphor materials: CaLa1-xSnNbO7: xEu3? were prepared by the conventional solid state route and characterized by Powder X-ray diffractometer, scanning electron microscope and ...
Dielectric, thermal and mechanical properties of Sr2ZnSi2O7 based polymer/ceramic composites

Tony Joseph; Uma, S; Philip, J; Sebastian, M T (Springer, 2012-06)

Polymer/Sr2ZnSi2O7 (SZS) ceramic composites suitable for substrate applications have been developed using the polymers polystyrene (PS), high density polyethylene (HDPE) and Di-Glycidyl Ether of Bisphenol A (DGEBA). The ...
Nanostructured GdeCeO2 electrolyte for solid oxide fuel cell by aqueous tape casting

Akbari-Fakhrabadi, A; Mangalaraja, R V; Sanhueza, F A; Avila, R E; Ananthakumar, S; Chan, S H (Elsevier, 2012)

Gadolinia-doped ceria (Ce0.9Gd0.1O1.95, GDC) electrolyte was fabricated by aqueous-based tape casting method for solid oxide fuel cells (SOFCs). The ceramic powder prepared by combustion synthesis was used with poly acrylic ...

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