Journal articles: Recent submissions

Now showing items 2201-2220 of 3410

Effect of composition on the conductivity and morphology of ligno sulfonic acid sodium salt doped polyaniline

Jayakannan, M; Amrutha, S R; Sindhu, K V (Wiley, 2006)

A systematic approach is developed to study the ligno sulfonic acid sodium salt (LSA) protonation or doping process with polyaniline emeraldine base (Pani-EB) in organic solvents like dimethyl sulfoxide, and the influence ...
Improved cellulase production by Trichoderma reesei RUT C30 under SSF through process optimization

Singhania, R R; Rajeev K Sukumaran; Pandey, A (Humana Press, 2007)

The major constraint in the enzymatic saccharification of biomass for ethanol production is the cost of cellulase enzymes. Production cost of cellulases may be brought down by multifaceted approaches which includes the use ...
Treatment of sulphide containing wastewater with sulphur recovery in a novel reverse fluidized loop reactor (RFLR)

Krishnakumar, B; Majumdar, S; Manilal, V B; Ajit Haridas (Elsevier Science, 2005)

A novel aerobic bioreactor, the reverse fluidized loop reactor (RFLR) was tested for recovering sulphur from aqueous sulphide in this study. The RFLR contained buoyant carrier particles on which chemolithotrophic sulphide ...
Control of Molecular structure in the generation of Highly Luminescent Liquid Crystalline Perylenebisimide Derivatives: Synthesis, Liquid Crystalline and Photophysical Properties

Jancy, B; Asha, S K (American Chemical Society, 2006)

We report here, for the first time, the role of the molecular design on the liquid crystalline and solid-state photoluminescent properties of soluble and thermally stable liquid crystalline perylenebisimide derivatives. A ...
Defected ground structure to reduce mutual coupling between cylindrical dielectric resonator antennas

Guha, D; Biswas, S; Joseph, T; Sebastian, M T (The Institution of Engineering and Technology-IET, 2008)

Use of a simple ring-shaped defected ground structure is experimentally demonstrated to suppress considerable mutual coupling between two cylindrical dielectric resonators. About 5 dB suppression has been obtained near the ...
Hydrolysis of pectin: An enzymatic approach and its application in banana fiber processing

Nicemol Jacob; Niladevi, K N; Anisha, G S; Prema, P (Elsevier, 2008)

Sediment samples were collected from different estuarine and marine areas along the West coast of India. Eighteen actinomycete cultures were isolated using starch casein agar and were screened for polygalacturonase activity ...
Expanded porphyrins as third order non-linear optical materials: Some structure-function correlations

Gokulnath, S; Chandrashekar, T K (Indian Academy of Sciences/ Springer, 2008)

In this paper, the non-linear optical properties of representative core-modified expanded porphyrins have been investigated with an emphasis on the structure-property relationship between the aromaticity and conformational ...
Vibrational studies and microwave dielectric properties of a-site-substituted tellurium-based double perovskites

Dias, A; Subodh, G; Sebastian, M T; Lage, M M; Moreira, R L (American Chemical Society, 2008)

A(2)MgTeO(6) (A = Ba, Sr, Ca) ceramics were prepared by solid-state route and their microstructure and microwave dielectric properties, as well as the vibrational phonon modes were investigated using the resonance method ...
Synthesis of an Al/MgAl2O4 in situ metal matrix composite from silica gel

Sreekumar, V M; Pillai, R M; Pai, B C; Chakraborty, M (Wiley, 2007)

An aluminum/MgAl2O4 in situ metal matrix composite has been synthesized using silica gel containing similar to 98% SiO2 in an Al-5Mg alloy. The thermodynamics and kinetics of MgAl2O4 formation have been discussed in detail. ...
One-pot synthesis of core-modified meso-aryl calix[5]phyrin and N-fused [24]Pentaphyrin

Gokulnath, S; Chandrashekar, T K (American Chemical Society, 2008)

Synthesis and characterization of core-modified meso-aryl calix[5]phyrins and N-fused pentaphyrins are reported.
Synthesis of novel heterocyclic calixarenes via the Diels-Alder reaction of calix[4]bis(spirodienones)

Ganga, V B; Suresh, E; Suresh, C H; Luxmi Varma, R (CSIR, 2008)

The reactivity of calix[4]bis(spirodienones) depends on the nature of the dienophile used. With 1,4-benzoquinones it acts as a 4 pi component whereas with 1,2-benzoquinones as a 2 pi system, yielding benzodioxin derived ...
Acridine-viologen dyads: Selective recognition of single-strand DNA through fluorescence enhancement

Elizabeth Kuruvilla; Nandajan, P C; Schuster, G B; Ramaiah, D (American Chemical Society, 2008)

Tolylacridine-viologen dyads show distinct fluorescence emission changes in the presence of double-strand DNA (dsDNA) and single-strand DNA (ssDNA) depending on the position of the linkage. The para isomer shows fluorescence ...
Novel 1,3-dipolar cycloaddition reactions of calix[4]bis(spirodienones): synthesis of isoxazolidine derived macrocycles

Ganga, V B; Suresh, E; Luxmi Varma, R (Elsevier, 2008)

Calix [4]bis(spirodienones) can perform as either 4 pi or 2 pi components in cycloaddition reactions with various carbo- and heterodienophiles and with 1,2-benzoquinones leading to the formation of highly functionalized ...
Photophysical and theoretical investigations of oligo(p-phenyleneethynylene)s: Effect of alkoxy substitution and alkyne-aryl bond rotations

James, P V; Sudeep, P K; Suresh, C H; George Thomas, K (American Chemical Society, 2006)

The unique photophysical, conformational, and electronic properties of two model phenyleneethynylene-based rigid rod molecular systems, possessing dialkoxy substitutions, are reported in comparison with an unsubstituted ...
Isodeoxyelephantopin, a novel sesquiterpene lactone, potentiates apoptosis, inhibits invasion, and abolishes osteoclastogenesis through suppression of nuclear factor-kappa B (NF-kappa B) activation and NF-kappa B-regulated gene expression

Ichikawa, H; Mangalam S Nair; Takada, Y; Alan Sheeja, D B; Suresh Kumar, M A; Oommen, O V; Aggarwal, B B (American Association for Cancer Research, 2006)

Purpose: Deoxyelephantopin (ESD) and isodeoxyelephantopin (ESI) are two sesquiterpene lactones derived from the medicinal plant Elephantopus scaber Linn. (Asteraceae). Although they are used for the treatment of a wide ...
Sugar end-capped polyethylene: Ceric ammonium nitrate initiated oxidation and melt phase grafting of glucose onto polyethylene and its microbial degradation

Gisha, E L; Lissy Jose; Prasad, V S; Pillai, C K S (Elsevier, 2006)

Low density polyethylene (LDPE) was modified to introduce biodegradability by grafting highly hydrophilic monomers (which can act as nutrients for microorganisms) such as glucose by a novel melt phase reaction using Brabender ...
The role of interfacial interactions on the mechanical properties of banana fibre reinforced phenol formaldehyde composites

Seena Joseph; Peter Koshy; Sabu Thomas (VSP BV, Brill Academic Publishers, 2005)

Banana fibre has been modified with silane treatments, acetylation, cyanoethylation, latex treatment and mercerization to improve the interfacial bonding with phenol formaldehyde (PF) resin. Scanning electron microscopy ...
Chitosan/oligo L-lactide graft copolymers: Effect of hydrophobic side chains on the physico-chemical properties and biodegradability

Gisha, E L; Pillai, C K S (Elsevier, 2006)

Graft copolymerization of L-lactide (LLA) onto chitosan (CS) was carried out by ring opening polymerisation using Ti(OBu)(4) as catalyst in DMSO at 90 degrees C in nitrogen atmosphere to obtain chitosan/oligo L-lactide ...
Synthesis and characterization of CeO2-TiO2-Pr6O11 solid solutions for environmentally benign nontoxic red pigments

Giable George; Prabhakar Rao, P; Reddy, M L P (Chemical Society of Japan, 2006)

New inorganic pigments Ce1-(x+y)TixPryO2 (x ranges from 0.05 to 0.195 and y ranges from 0.005 to 0.15) based on CeO2-TiO2-Pr6O11 solid solutions have been synthesized by solid-state route with a goal of preparing environmentally ...
Effect of caffeine and tannins on cultivation and fructification of Pleurotus on coffee husks

Fan, L; Soccol, A T; Pandey, A; de Souza Vandenberghe, L P; Soccol, C R (SOC Brasileira Microbiologia, 2006)

The objective of this work was to study the effect of caffeine and tannins on Pleurotus sp. cultivation and to evaluate the feasibility of using coffee husks as substrate for mushroom cultivation. Eight strains of P. ...

Now showing items 2201-2220 of 3410

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