2008: Recent submissions

Now showing items 41-60 of 172

Planar meso pentafluorophenyl core modified isophlorins

Reddy, J S; Anand, V G (American Chemical Society, 2008)

Isophlorins and its analogues bridge the structural features between porphyrins and annulenes. Invariably they are known to be unstable but can be stabilized by appropriate substituents in the core and periphery of a ...
New red- and green-emitting phosphors, AYP(2)O(7.5): RE3+ (A=Ca and sr; RE=Eu and tb) under near-UV irradiation

Mariam Thomas, S; Prabhakar Rao, P; Ravindran Nair, K; Peter Koshy (Wiley, 2008)

New red- and green-emitting phosphors, AY(1-x)P(2)O(7.5):xRE(3+) (A=Ca and Sr; x=0.01, 0.03, 0.05, 0.10; RE=Eu and Tb) were synthesized by the conventional ceramic route and their photoluminescence properties under ...
Microwave dielectric properties and vibrational spectroscopic analysis of MgTe2O5 ceramics

Subodh, G; Ratheesh, R; Jacob, M V; Sebastian, M T (Materials Research Society, 2008)

MgTe2O5 ceramics were prepared by solid-state route. These materials were sintered in the temperature range of 640-720 degrees C. The structure and microstructure of the compound was investigated using x-ray diffraction ...
Thermal properties of polytetrafluoroethylene/Sr2Ce2Ti5O16 polymer/ceramic composites

Subodh, G; Manjusha, M V; Philip, J; Sebastian, M T (Wiley, 2008)

Polytetrafluoroethylene (PTFE) composites filled with Sr2Ce2Ti5O16 ceramic were prepared by a powder processing technique. The structures and microstructures of the composites were investigated by X-ray diffraction and ...
Bioinspired superhydrophobic coatings of carbon nanotubes and linear pi systems based on the "bottom-up" self-assembly approach

Srinivasan, S; Praveen, V K; Robert Philip; Ajayaghosh, A (Wiley, 2008)
Carbon nanotube triggered self-assembly of oligo(p-phenylene vinylene)s to stable hybrid pi gels

Srinivasan, S; Babu, S S; Praveen, V K; Ajayaghosh, A (Wiley, 2008)
Photoresponsive glass-forming butadiene-based chiral liquid crystals with circularly polarized photoluminescence

Ratheesh, K V; Shibu Abraham; Akiyama, H; Furumi, S; Tamaoki, N; Suresh Das (Wiley, 2008)

The synthesis and study of the photo and thermoresponsive behavior of a series of novel trimesogenes consisting of a diphenylbutadiene core linked to cholesterol moietes on either side via flexible alkyl chains are reported. ...
High surface area mesoporous nanocrystalline lanthanum phosphate nanorod through a sol-gel process - Effect of alcohol washing on a non-oxide gel

Rajesh Komban; Shajesh, P; Biji, P; Warrier, K G K (Elsevier, 2008)

The present investigation is related to synthesis of high surface area lanthanum phosphate by an aqueous sol-gel process involving post gelation treatment by solvent exchange resulting in a soft agglomerated gel. Precursor ...
A facile aqueous sol-gel process for the synthesis of alumina-lanthanum phosphate nanocomposite

Rajesh Komban; Baiju, K V; Jayasankar, M; Warrier, K G K (Wiley, 2008)

A facile aqueous sol-gel process is being reported for the first time for the synthesis of alumina-lanthanum phosphate (Al(2)O(3)-LaPO(4)) nanocomposite. X-ray diffraction (XRD) analysis confirms the absence of any reactive ...
Investigation on the development of sturdy bioactive hydrogel beads

Sangeetha, K; Emilia Abraham, T (Wiley, 2008)

Biocatalytic hydrogel beads, which retain higher activity, expand, and contract with changes in pH, having biocompatibility, are developed. Composite spherical beads of chitosan having a diameter of 1-2 mm were prepared ...
Synthesis and characterization of novel water-soluble polyamide based on spermine and aspartic acid as a potential gene delivery vehicle

Viola, B M; Emila Abraham, T; Arathi, D S; Sreekumar, E; Pillai, M R; Thomas, T J; Pillai, C K S (Budapest University of Technology and Economics, 2008)

We developed a novel and convenient method for the synthesis of a potentially safe non-viral gene delivery vehicle based on the cationic block copolymer of spermine and aspartic acid ( ASSP) and coupled it with polyethylene ...
Preparation and characterization of cross-linked enzyme aggregates (CLEA) of subtilisin for controlled release applications

Sangeetha, K; Emilia Abraham, T (Elsevier, 2008)

Enzyme stabilization is one of the major challenges in the biocatalytic process optimization. Subtilisin was aggregated using ammonium sulphate and polyethylene glycol with surfactants like triton X-100 and tween 20. The ...
Organomodified kaolin as a reinforcing filler for natural rubber

Rugmini Sukumar; Menon, A R R (Wiley, 2008)

China clay (kaolin) has been modified with sodium salt of rubber seed oil (SRSO). SRSO was characterized using X-ray diffraction (XRD), infrared spectroscopy (FTIR), and differential thermal analysis (DTA). XRD of the ...
Centrifugal casting of functionally graded aluminium matrix composite components

Rajan, T P D; Pillai, R M; Pai, B C (Maney Publishing, 2008)

Centrifugal casting is one of the potential manufacturing techniques used for producing near net shaped components with improved properties. The emergence of new class of functionally graded materials has made it an important ...
Additional investigations on the separation of titanoferrous impurities from kaolin by high shear pretreatment and froth flotation - Part II

Raghavan, P; Sathy Chandrasekhar; Vogt, V; Gock, E; Suresh, N (Elsevier, 2008)

In line with the detailed investigations carried out in the laboratory for the separation and removal of colouring titanoferrous impurities from cryo-filtered Mamuara clay (Gujarat, India) based on high shear pretreatment ...
L(+)-lactic acid recovery from cassava bagasse fermented medium using anion exchange resins

Rojan P John; Nampoothiri, K M; Pandey, A (Inst Tecnologia Parana, 2008)

The properties of the ion exchange resins, Amberlite IRA 402, a strong anion exchange resin and IRA 67, a weak anion exchange resin were determined to evaluate their comparative suitability for lactic acid recovery from ...
The effect of glass addition on the dielectric properties of barium strontium titanate

Priya Rani, B R; Sebastian, M T (Springer, 2008)

Ba(0.7)Sr(0.3)TiO(3) (BST) ceramics were prepared by the conventional solid state ceramic route. Different weight percentages of twelve different glasses were added to the calcined BST ceramics and sintered. The structure ...
Anaerobic protozoa and their growth in biomethanation systems

Priya, M; Ajit Haridas; Manilal, V B (Springer, 2008)

This study was to investigate growth of protozoa and its influence on biodegradation in anaerobic treatment systems. It was done by specifically controlling and monitoring growth of protozoa versus degradation in continuous ...
Helical supramolecular architectures of self-assembled linear pi-systems

Praveen, V K; Babu, S S; Vijayakumar, C; Reji Varghese; Ajayaghosh, A (The Chemical Society of Japan, 2008)

The present account describes the summary of the recent developments to the design of helical self-assemblies of linear pi-conjugated molecules, particularly of oligo(p-phenylenevinylenes) (OPVs) and oligo(p-phenyleneethyiiylenes) ...
Plasmon coupling in dimers of Au nanorods

Pramod; George Thomas, K (Wiley, 2008)

The coupled plasmon absorption of Au nanorod dimers is investigated as a function of the orientation between the long-axis of the nanorod by linking them with rigid and flexible molecules. As the angle between the Au ...

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