2009: Recent submissions

Now showing items 121-140 of 184

Organic nanomaterials: Morphological control for charge stabilization and charge transport

Pramod, P; George Thomas, K; George, M V (Wiley, 2009)

Chromophoric systems with proper recognition motifs can organize into well-defined arrays forming supramolecular assemblies and further into nanoscopic materials. The optical and electrical properties of organic nanomaterials ...
Production and partial purification of alpha-amylase from a novel isolate streptomyces gulbargensis

Dastager, S G; Agasar, D; Pandey, A (Springer, 2009)

Extracellular amylase production by a newly isolated alkali-thermotolerant strain Streptomyces gulbargensis DAS 131 was optimized and characterized. The highest amylase production was achieved by growing S. gulbargensis ...
Effect of sintering temperature on the microstructural and flux pinning characteristics of Bi1.6Pb0.5Sr1.8La0.2Ca1.1Cu2.1O8+delta ceramics

Sarun, P M; Vinu, S; Shabna, R; Biju, A; Guruswamy, P; Syamaprasad, U (Wiley, 2009)

We evaluated the microstructure, superconducting, and flux pinning properties of La-doped (Bi,Pb)-2212 bulk sample by varying its sintering temperature (T-sinter) between 846 degrees and 860 degrees C. Significant variations ...
Long-lived photoinduced charge separation in flexible 9,10-Bis(phenylethynyl)anthracene-phenothiazine dyads

Suneesh, C V; Gopidas, K R (American Chemical Society, 2009)

Photoinduced electron transfer in linked donor-acceptor dyads with bis(phenylethynyl)anthracene as light absorber and acceptor and one or two phenothiazine units as donors was investigated. Absorption spectra of the dyads ...
Application of response surface method for studying the role of dissolved oxygen and agitation speed on gamma-linolenic acid production

Ahmed, S U; Singh, S K; Pandey, A; Kanjilal, S; Prasad, R B N (Springer, 2009)

To study the effect of agitation speed (rpm) and dissolved oxygen concentration (DO) on the production of gamma linolenic acid by Mucor sp. RRL001, a central composite design experiment was performed in a 5-L stirred tank ...
Statistical optimization of L-leucine amino peptidase production from streptomyces gedanensis IFO 13427 under submerged fermentation using response surface methodology

Raji, R; Nampoothiri, K M; Szakacs, G; Nagy, V; Pandey, A (Elsevier, 2009)

Response surface methodology (RSM) employing the central composite design (CCD) was used to optimize the fermentation medium for the production Of L-leucine amino peptidase (LAP) from Streptomyces gedanensis IFO13427 under ...
Correlation between solid-state photophysical properties and molecular packing in a series of Indane-1,3-dione containing butadiene derivatives

Saleesh Kumar, N S; Shinto Varghese; Suresh, C H; Rath, N P; Suresh Das (American Chemical Society, 2009)

The solid-state photophysical and photochromic properties and the molecular packing in single crystals of a series of donor-acceptor-substituted butadiene derivatives with alkoxy groups as donor and indane-1,3-dione as ...
Polyphasic taxonomy of novel actinobacteria showing macromolecule degradation potentials in Bigeum Island, Korea

Dastager, S G; Pandey, A; Lee, J-C; Li, W-J; Kim, C-J (Springer, 2009)

Aerobic, alkaliphilic to alkalitolerant and mesophilic bacteria were isolated and characterized from soil and sediment samples collected from Bigeum Island, South Korea. The total numbers of microorganisms in the soil and ...
Comparing ultraviolet and chemical reduction techniques for enhancing photocatalytic activity of silver oxide/silver deposited nanocrystalline anatase titania

Priya, R; Baiju, K V; Shukla, S; Biju, S; Reddy, M L P; Patil, K; Warrier, K G K (American Chemical Society, 2009)

Silver oxide/silver have been deposited, with varying silver concentration (0.01-10 mol %), on the surface of sol-gel derived nanocrystal line anatase titania using two different techniques, namely the ultraviolet reduction ...
Recent advances in solid-state fermentation

Singhania, R R; Patel, A K; Soccol, C R; Pandey, A (Elsevier, 2009)

Solid-state fermentation (SSF) has built up credibility in recent years in biotech industries due to its potential applications in the production of biologically active secondary metabolites, apart from feed, fuel, food, ...
Palladium catalyzed tandem ring opening-ring closing reaction of diazabicyclic alkenes: A facile one pot strategy for cyclopentannulation of heterocycles

Jubi John; Indu, U; Suresh, E; Radhakrishnan, K V (American Chemical Society, 2009)

A novel palladium catalyzed protocol for the synthesis of cyclopentene fused heterocycles from diazabicyclic alkenes and ortho-functionalized aryliodides has been elaborated. The reaction can be tuned toward the formation ...
Self-assembled anionic micellar template for polypyrrole, polyaniline, and their random copolymer nanomaterials

Jinish Antony, M; Jayakannan, M (Wiley, 2009)

We report an anionic surfactant approach for size and shape control in polyaniline, polypyrrole, and their polyaniline-co-polypyrrole random copolymer nanomaterials. A renewable resource azobenzenesulfonic acid anionic ...
Isolation and characterization of plant growth-promoting strain pantoea NII-186. from western ghat forest soil, India

Dastager, S G; Deepa, C K; Puneet, S C; Nautiyal, C S; Pandey, A (Wiley, 2009)

Aims: To isolate plant growth-promoting bacterium from Western Ghat forests in India. Methods and Results: A Gram-negative, rod shaped, cream white coloured strain Pantoea NII-186 isolated from Western Ghat soil sample. ...
Reversible transformation between rings and coils in a dynamic hydrogen-bonded self-assembly

Yagai, S; Kubota, S; Saito, H; Unoike, K; Karatsu, T; Kitamura, A; Ajayaghosh, A; Kanesato, M; Kikkawa, Y (American Chemical Society, 2009)

Several proteins, such as tobacco mosaic virus coat protein and the B protein of the bacteriophage A, are known to exhibit unique dynamic self-organization processes. involving ring-shaped and extended helical nanostructures ...
Supramolecular ring banded prototype liquid crystalline oligo(phenylenevinylene)

Amrutha, S R; Jayakannan, M (American Chemical Society, 2009)

We report a new ring banded supramolecular structure in thermotropic liquid crystalline oligo(phenylenevinylene) (OPV) via a melt crystallization process. A series of structurally different OPV molecules were synthesized ...
Hydrothermal processing of dye-adsorbing one-dimensional hydrogen titanate

Baiju, K V; Shukla, S; Biju, S; Reddy, M L P; Warrier, K G K (Elsevier, 2009)

One-dimensional hydrogen titanate consisting of mixed nanobelts, nanotubes, and nanorods have been processed via hydrothermal followed by high temperature calcination. The processed products have been characterized via ...
Low-Temperature sintering and microwave dielectric properties of Li2MgSiO4 ceramics

Sumesh George; Anjana, P S; Deepu, V N; Mohanan, P; Sebastian, M T (Wiley, 2009)

Development of a low-temperature sintered dielectric material derived from Li2MgSiO4 (LMS) for low-temperature cofired ceramic (LTCC) application is discussed in this paper. The LMS ceramics were prepared by the solid-state ...
Effect of 3-glycidoxypropyltrimethoxysilane precursor on the properties of ambient pressure dried silica aerogels

Shajesh, P; Smitha, S; Aravind, P R; Warrier, K G K (Springer, 2009)

The effect of an organically modified precursor, 3-glycidoxypropyltrimethoxysilane in an ambient pressure process involving aging in silane solution for silica aerogels is presented. The effect of increasing trialkoxysil ...
Polystyrene/Sr2Ce2Ti5O15 composites with low dielectric loss for microwave substrate applications

Subodh, G; Deepu, V; Mohanan, P; Sebastian, M T (Wiley, 2009)

Sr2Ce2Ti5O15 (Strontium Cerium Titanate or SCT) ceramic was prepared by solid-state route. A composite of polystyrene/Sr2Ce2Ti5O15 was made using melt mixing technique in a Kneading machine. The microstructure of the ...
RGB emission through controlled donor self-assembly and modulation of excitation energy transfer: A novel strategy to white-light-emitting organogels

Vijayakumar, C; Praveen, V K; Ajayaghosh, A (Wiley, 2009)

A white-light-emitting organogel is designed by the controlled self-assembly of a bischolesterol-functionalized OPV donor that allows slow energy migration and partial energy transfer in the gel state to an encapsulated ...

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