Browsing 2007 by Title

Now showing items 1-20 of 143

26 pi Aromatic core-modified hexaphyrins: Syntheses, characterization, and structural diversities

Misra, R; Kumar, R; Chandrashekar, T K; Joshi, B S (American Chemical Society, 2007)

Synthesis and characterization of several 26 pi core-modified hexaphyrins are reported. The synthetic methodology involved a well-known acid-catalyzed MacDonald-type condensation reaction of the required tripyrrane with ...
3,4,5- Trisbenzyloxy benzoic acid as a new photo-sensitizer for Tb3+ ion

Reshmi, J R; Biju, S; Reddy, M L P (Elsevier, 2007-09)

A novel and highly conjugated aromatic carboxylic acid,3,4,5-trisbenzyloxy benzoic acid (TBBA) and the corresponding Tb3+ complex has been synthesized and characterized by various spectroscopic techniques. The room ...
3-phenyl-4-aroyl-5-isoxazolonate complexes of Tb3+ as promising light-conversion molecular devices

Biju, S; Reddy, M L P; Freire, R O (Elsevier, 2007)

New tris(3-phenyl-4-aroyl-5-isoxazolonate)terbium(III) complexes have been synthesized and characterized by various spectroscopic techniques. Due to an efficient energy transfer from the heterocyclic beta-cliketonate ligand ...
Aggregation and photoresponsive behavior of azobenzene-oligomethylene-glucopyranoside bolaamphiphiles

Narayan, G; Saleesh Kumar, N S; Paul, S; Srinivas, O; Jayaraman, N; Suresh Das (Elsevier, 2007)

The self-aggregation behavior of a series of photoresponsive bolaamphiphiles consisting of a central azobenzene moiety linked to terminal sugar groups via oligomethylene spacers in water/DMSO mixed solvents are reported. ...
Aggregation properties of heavy atom substituted squaraine dyes: Evidence for the formation of J-type dimer aggregates in aprotic solvents

Saji Alex; Basheer, M C; Arun, K T; Ramaiah, D; Suresh Das (American Chemical Society, 2007)

The squaraine dye bis(2,4,6-trihydroxyphenyl)squaraine (SqH) was earlier reported to form J-type dimer aggregates in acetonitrile solutions at higher concentrations. Subsequent studies have suggested that concentration-dependent ...
Ansa-metallocene-based cyclic[2]pyrroles

Ramakrishnan, S; Srinivasan, A (American Chemical Society, 2007)

Syntheses and X-ray structural analyses of ansa-metallocene-based cyclic[2]pyrroles are described. The pyrrole units in the macrocycles adopt partial 1,2-alternate conformation in the solid state.
Antibacterial Activity of Kauranes from Annona squamosa L. Pericarp

Beena Joy; Sobhana, D (Asian Publication Corporation, 2007)

Bioactivity directed fractionation and isolation of active principles from the pericarp of Annona squamosa yielded three kauranes namely, (-)-ent-kaur-17-acetoxy, 19-oic acid, 16α, 17-dihydroxy-ent-kauran-19- oic acid ...
Antimicrobial activity and chemical composition of essential oil from Hedychium coronarium

Beena Joy; Akhila Rajan; Emilia Abraham (Wiley, 2007)

The essential oil from fresh and dried rhizomes of Hedychium coronarium on GC-MS analysis resulted in the identification of 44 and 38 constituents representing 93.91% and 95.41%, respectively. The major components of the ...
Antioxidant efficacy of phytochemical extracts from defatted rice bran in the bulk oil system

Renuka Devi, R; Jayalekshmy, A; Arumughan, C (Elsevier, 2007)

The antioxidant compounds oryzanols, tocols and ferulic acid were identified in the methanolic extracts of defatted rice bran (DRB) by high pressure liquid chromatography (HPLC). The crude methanolic extract (CME) was ...
Antiradical efficacy of phytochemical extracts from defatted rice bran

Renuka Devi, R; Arumughan, C (Elsevier, 2007)

The phytochemical compounds oryzanols, tocopherols, tocotrienols and ferulic acid were identified in the crude methanolic extracts (CME) of defatted rice bran (DRB) by HPLC. Enrichment of antioxidants in CME was achieved ...
Antiradical efficacy of phytochemical extracts from defatted rice bran

Renuka Devi, R; Arumughan, C (2007)

The photochemical compounds oryzanols, tocopherols, tocotrienols and ferulic acid were identified in the crude methanolic extacts (CME) of defatted rice bran (DRB) by HPCL. Enrichment of antioxidants in CME was achieved ...
Antiwetting silica-gelatin nanohybrid and transparent nano coatings synthesised through an aqueous sol-gel process

Smitha, S; Shajesh, P; Mukundan, P; Warrier, K G K (Springer, 2007)

Hydrophobic silica-biopolymer hybrid has been synthesised using colloidal silica as the precursor for silica, gelatin as the biopolymer counterpart and vinyltrimethoxysilane as the surface modifier through a sol-gel method. ...
Aqueous colloidal sol-gel route to synthesize nanosized ceria-doped titania having high surface area and increased anatase phase stability

Pradeepan, P; Baiju, K V; Mukundan, P; Krishna Pillai, P; Warrier, K G K (Springer, 2007)

Nanocrystalline sol-gel derived titania doped with ceria (1, 2, 5 and 10-mole%) has been prepared from titanyl oxysulphate. The titania doped with 5-mole% CeO2 after calcining to 500 degrees C, possesses specific surface ...
A base-sugar-phosphate three-layer ONIOM model for cation binding: Relative binding affinities of alkali metal ions for phosphate anion in DNA

Neethu Sundaresan; Suresh, C H (American Chemical Society, 2007)

A three layer ONIOM approach was used to study the interactions of hydrated alkali metal ions such as Li+, Na+, and K+ with a DNA fragment containing two phosphate groups, three sugar units, and a G center dot center dot ...
Biofiltration of toluene-contaminated air using an agro by-product-based filter bed

Krishnakumar, B; Hima, A M; Ajit Haridas (Springer, 2007)

An innovative, coir-pith-based, filter bed for degrading vapor phase toluene in a gas biofilter over 160 days without any external nutrient supply is reported in this study. Indigenous microflora present in the coir pith ...
Biosorption of anionic textile dyes by nonviable biomass of fungi and yeast

Kumud Kumari; Emilia Abraham, T (Elsevier, 2007)

The nonviable biomass of Aspergillus niger, Aspergillus japonica, Rhizopus nigricans, Rhizopus arrhizus, and Saccharomyces cerevisiae were screened for biosorption of textile dyes. The selected anionic reactive dyes were ...
Cell suspension cultures of portulaca grandiflora as potent catalysts for biotransformation of L-tyrosine into L-dopa,an anti-parkinson’s drug

Nisha Rani; Beena Joy; Emilia Abraham, T (Informa Healthcare, 2007)

3,4-Dihydroxy L-phenylalanine (L-DOPA) is considered a potent drug for the treatment of Parkinson disease, a neurologic disorder. Enantiomerically pure L-DOPA is produced from L-tyrosine in a single-step biotransformation ...
CFD based investigations on hydrodynamics and energy dissipation due to solid motion in liquid fluidised bed

Panneerselvam, R; Savithri, S; Surender, G D (Elsevier, 2007)

CFD simulations are carried out for the prediction of flow patterns in a liquid-solid fluidised bed using Eulerian-Eulerian framework. The CFD model predictions are compared with the experimental findings reported by ...
Chemical composition and in vitro antioxidant studies on syzgium cumini fruit

Benherlal, P S; Arumughan, C (Wiley, 2007)

Syzygium cumini, widely known as Jamun, is a tropical tree that yields purple ovoid fleshy fruit. Its seed has traditionally been used in India for the treatment of diabetes. Based on the available ethno-pharmacological ...
A compact hybrid CPW fed planar monopole/dielectric resonator antenna

Suma, M N; Bijumon, P V; Sebastian, M T; Mohanan, P (Elsevier, 2007)

Design of hybrid antenna consisting of a coplanar waveguide (CPW) fed printed monopole and cylindrical dielectric resonator is presented in this paper. A CPW fed printed monopole acts as an effective radiator and excites ...

Now showing items 1-20 of 143

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