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Now showing items 1-20 of 143

Prospects of functionally graded materials for engineering applications

Rajan, T P D; Pillai, R M; Pai, B C (The Indian Institute of Metals, Trivandrum Chapter, 2007)

A large number of components for engineering and structural applications demand location specific performance under service conditions. A gradual transition in the composition or microstructure motivates the changes in ...
Minerological Studies on Beach Sediments of South East Cost,India

Sundarajan, M; Usha, Natesan (2007)

The study area, Vedaranyam coast, is located along the Southeast of India and has a reverse "U" shaped structure. The coastal stretch between Akkarapallivasal and Muthupet lying between 10° 20' N - 10° 25'N latitude and ...
Solvent – induced self – organization approach for polymeric architectures of micropores, hexagons and spheres based on polyurethanes prepared via novel melt transurethane methodology

Deepa, P; Jayakannan, M (2007)

Solvent - induced self-organization approach was developed, for the first time, to produce polyurethane micro porous templates and higher ordered morphologies such as micro or nanometer- sized polymeric hexagons and spheres. ...
Melt rheology and extrudate morphology studies of polystyrene/polybutadiene blends in the presence and absence of compatibilisers

Susan Joseph; Menon, A R R; Aju Joseph; Sabu Thomas (Springer, 2007)

Melt rheology and extrudate morphology of polystyrene (PS)/polybutadiene (PB) blends were studied with special reference to the effect of blend ratio and two different types of compatibilisers, the random copolymers and ...
Oil cakes and their biotechnological applications - A review

Sumitra, R; Singh, S K; Larroche, C; Soccol, C R; Pandey, A (Elsevier, 2007)

Oil cakes have been in use for feed applications to poultry, fish and swine industry. Being rich in protein, some of these have also been considered ideal for food supplementation. However, with increasing emphasis on cost ...
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 ...
Studies on the formation of self-assembled nano/micro structured polyaniline-clay nanocomposite (PANICN) using 3-pentadecyl phenyl phosphoric acid (PDPPA) as a novel intercalating agent cum dopant

Sudha, J D; Sasikala, T S (Elsevier, 2007)

Novel self-assembled micro/nanostructured polyaniline-clay nanocomposite (PANICN) materials were prepared by in situ intercalative emulsion polymerization of aniline in aqueous dispersion of clay using functionalized ...
A new Hg2+-Selective fluorescent sensor based on a 1,3-alternate thiacalix[4]arene anchored with four 8-quinolinoloxy groups

Praveen, L; Ganga, V B; Thirumalai, R; Sreeja, T; Reddy, M L P; Luxmi Varma, R (American Chemical Society, 2007)

A new thiacalix [4]arene derivative in a 1,3-alternate conformation bearing four quinolinoloxy groups through propyl chains has been synthesized, and its metal ion-binding and fluorescence-sensing properties were investigated ...
Interplay of dual reactivity in the reaction of pentafulvenes with 1,2,4-triazoline-3,5-diones: Experimental and theoretical investigations

Anas, S; Syam Krishnan, K; Sajisha, V S; Anju, K S; Radhakrishnan, K V; Suresh, E; Suresh, C H (Royal Society of Chemistry, 2007)

A detailed investigation on the reaction of pentafulvenes with N-substituted-1,2,4-triazoline-3,5-diones leading to the formation of five- and seven-membered azapolycycles is described. The observed reactivity is explained ...
CuAl2O4 formation and its effect on alpha-Al2O3 phase evolution on calcination of metal ion doped boehmite xerogels

James, T; Padmanabhan, M; Warrier, K G K; Sugunan, S (Elsevier, 2007)

The formation characteristics of CuAl2O4 from sol-gel boehmite doped with Cu2+, ion and also the effect of dopants like Cu2+, Ti4+ and Cc(4+) on calcination and concentration dependent structural evolution of alpha-Al2O3 ...
Effect of tantalum addition on anatase phase stability and photoactivity of aqueous sol-gel derived mesoporous titania

Baiju, K V; Shajesh, P; Wunderlich, W; Mukundan, P; Kumar, S R; Warrier, K G K (Elsevier, 2007)

The effect of the addition of tantalum to nanocrystalline titania matrix on the photocatalytic activity is presented. The tantalum addition increases the anatase phase stability to above 1000 degrees C by inhibiting the ...
Dual-mode semisquaraine-based sensor for selective detection of Hg2+ in a micellar medium

Rekha, R A; Jyothish, K; Ramaiah, D (American Chemical Society, 2007)

A novel chemosensor based on semisquaraine dye (SSQ) for selective detection of Hg2+ is described. SSQ is obtained in quantitative yields from the reaction between squaric acid and 6-ethoxy-2-quinaldinium iodide. SSQ in ...
Synthesis, photophysical, and electroluminescent properties of arylenevinylenes-co-pyrrolenevinylenes derived from divinylaryl bridged bispyrroles

Biswas, A K; Ashish, A; Tripathi, A K; Mohapatra, Y N; Ajayaghosh, A (American Chemical Society, 2007)

Synthesis, characterization, and photophysical properties of four different pi-conjugated oligomers containing alternate arylenevinylene and pyrrolenevinylene repeat units are reported. The optoelectronic properties are ...
Solvent-induced self-organization approach for polymeric architectures of micropores, hexagons and spheres based on polyurethanes prepared via novel melt transurethane methodology

Deepa, P; Jayakannan, M (Wiley, 2007)

Solvent-induced self-organization approach was developed, for the first time, to produce polyurethane microporous templates and higher ordered morphologies such as micro or nanometer-sized polymeric hexagons and spheres. ...
Quantitative assessment of the stereoelectronic profile of phosphine ligands

Jomon Mathew; Tinto Thomas; Suresh, C H (American Chemical Society, 2007)

The stereoelectronic profile of a variety of phosphine ligands (PR3) have been estimated using a combined approach of quantum mechanics (QM) and molecular mechanics (MM). The quantum mechanically derived molecular electrostatic ...
Structure and microwave dielectric properties of Sr2+nCe2Ti5+nO15+3n (n e 10) homologous series

Subodh, G; Jose James; Sebastian, M T; Paniago, R; Dias, A; Moreira, R L (American Chemical Society, 2007)

Nominally Sr2+nCe2Ti5+nO16+3n dielectric ceramics were prepared by conventional solid-state ceramic route. The structure and microstructural features of the ceramics were investigated by X-ray diffraction, X-ray photoelectron ...
Quadrupolar pi-gels: Sol-gel tunable red-green-blue emission in donor-acceptor-type oligo(p-phenylenevinylene)s

Ajayaghosh, A; Praveen, V K; Srinivasan, S; Reji Varghese (Wiley, 2007)
Self-assembly of tripodal squaraines: Cation-assisted expression of molecular chirality and change from spherical to helical morphology

Ajayaghosh, A; Chithra, P; Reji Varghese (Wiley, 2007)
Self-assembled hybrid oligo(p-phenylenevinylene) - Gold nanoparticle tapes

Van Herrikhuyzen, J; Subi J George; Vos, M R J; Sommerdijk, N A J M; Ajayaghosh, A; Meskers, S C J; Schenning, A P H J (Wiley-VCH, 2007)
Preferential end functionalization of au nanorods through electrostatic interactions

Pramod, P; Shibu Joseph, S T; George Thomas, K (American Chemical Society, 2007)

A novel methodology for the preferential end functionalization of Au nanorods with nanoparticles is reported by exploiting the electrostatic attractive interactions. The enhanced potential at the edges of Au nanorods ...

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