2008: Recent submissions

Now showing items 21-40 of 172

Carbon-Nitrogen bond-forming reactions of diakyl azodicarboxylate: A promsing synthetic strategy

Vijay Nair, G; Biju, A T; Smitha C. Mathew; Babu, B P (Wiley, 2008)

Azodicarboxylates have found applications in electrophilic amination reactions and in pericyclic reactions. The nucleophilic trigger in Mitsunobu reactions, that is, the zwitterion formed from triphenylphosphine and dialkyl ...
Construction of heterocycles via 1,4-dipolar cycloaddition of quinoline-DMAD zwitterion with various dipolarophiles

Vijay Nair, G; Devipriya, S; Suresh, E (Elsevier, 2008)

Quinoline forms 1,4-zwitterion with dimethyl acetylenedicarboxylate, which is trapped by various dipolarophiles to yield a variety of pyridoquinoline and oxazinoquinoline derivatives.
Synthesis and characterization of environmentally benign calcium-doped Pr2MO2O9 pigments: Applications in coloring of plastics

Giable George; Sandhya Kumari, L; Vishnu, V S; Ananthakumar, S; Reddy, M L P (Elsevier, 2008)

A new class of environmentally benign rare earth pigments of general formula Pr2-xCaxMo2O9-delta(xrangesfrom 0 to 1.0) displaying colors ranging from green to yellow were synthesized by traditional solid-state route, as ...
Stereoselective synthesis of spirocyclopentanones via N-heterocyclic carbene-catalyzed reactions of enals and dienones

Vijay Nair, G; Beneesh, P B; Sreekumar, V; Suresh, E (Royal Society of Chemistry, 2008)

Homoenolates generated from enals by nucleophilic heterocyclic carbene (NHC) catalysis undergo a conjugate addition/cyclization sequence with cyclic dienones, culminating in the efficient synthesis of spirocyclopentanones.
Structure of compounds in the Sr1-3x/2CexTiO3 homologous series

Ubic, R; Subodh, G; Sebastian, M T; Gout, D; Proffen, T (American Chemical Society, 2008)

Four compositions in the Sr1 - 3x/2CexTiO3 homologous series, corresponding to x = 0.1333, 0.1667, 0.25, and 0.4, have been produced by conventional solid-state processing. The structure of these compounds was analyzed by ...
HPTLC fingerprinting and quantification of lignans as markers in sesame oil and its polyherbal formulations

Divya, S; Ranjith, A; Arumughan, C (Elsevier, 2008)

Sesamum (Sesamum indicum) seed and its oil have been in use in Indian traditional medicine,'Ayurveda' since antiquity. However there has been no attempt to standardize the polyherbal formulations containing sesamum oil as ...
Bis(3,5-diiodo-2,4,6-trihydroxyphenyl)squaraine: A novel candidate in photodynamic therapy for skin cancer models in vivo

Gayathri Devi, D; Cibin, T R; Ramaiah, D; Annie, A (Elsevier, 2008)

Photodynamic therapy (PDT) is based on the light-induced activation of a photosensitizer generating highly reactive oxygen species that induce tissue destruction in malignant tissues. The present study was carried out to ...
Harvesting infrared photons with croconate dyes

Takechi, K; Kamat, P V; Rekha, R A; Jyothish, K; Ramaiah, D (American Chemical Society, 2008)

Excited-state properties of the croconate dyes were investigated with an aim to utilize them as light harvesting assemblies in the infrared (IR) region (lambda(max) similar to 865 nm and M-1 c(-1) = (1.4-4.2) x 10(5) M-1 ...
Use of molecular electrostatic potential for quantitative assessment of inductive effect

Suresh, C H; Alexander, P; Vijayalakshmi, K P; Sajith, P K; Gadre, S R (Royal Society of Chemistry, 2008)

Density functional theory computations at the B3LYP/6-31G(d, p) level have been carried out for three types of model compounds, viz. (i) 4-substituted bicyclo[2.2.2] octane carboxylic acids, (ii) anions of 4-substituted ...
Genome shuffling of Lactobacillus delbrueckii mutant and Bacillus amyloliquefaciens through protoplasmic fusion for L-lactic acid production from starchy wastes

Rojan John; Gangadharan, D; Nampoothiri, K M (Elsevier, 2008)

Current study was focused on the development of a non-fastidious lactic acid producing strain having better growth rate, low pH tolerance and good productivity by genome shuffling of a mutant strain of Lactobacillus ...
Photoacoustic thermal characterization of Al2O3-Ag ceramic nanocomposites

Sajan, D G; Aji, A A; Warrier, P R S; Warrier, K G K; Radhakrishnan, P; Nampoori, V P N; Vallabhan, C P G (Elsevier, 2008)

aser-induced nondestructive photoacoustic (PA) technique has been employed to determine the thermal diffusivity of nanometal (Ag) dispersed ceramic alumina matrix sintered at different temperatures. The thermal diffusivity, ...
Mossbauer spectroscopic study of China clay samples collected from different Indian sites

Tripathi, R P; Verma, H C; Chandrasekhar, S; Ramaswamy, S (Springer, 2008)

The paper describes part of the study carried out on the iron bearing phases of china clays collected from different china clay reserves of the country. Chemical assays of the clays as well as the "panned" impurities were ...
Production and purification of a solvent-resistant Esterase from Bacillus licheniformis S-86

Torres, S; Baigori, M D; Pandey, A; Castro, G R (Springer, 2008)

New thermophilic and organic-solvent-tolerant Bacillus licheniformis S-86 strain is able to produce two active and solvent-stable esterases. Production of type I and II esterases was substantially enhanced when oils and ...
Manifestation of a chiral smectic C phase in diphenylbutadiene-cored bolaamphiphilic sugars

Suresh Das; Narayan, G; Shibu Abraham; Jayaraman, N; Singh, M K; Krishna Prasad, S; Shankar Rao, D S (Wiley, 2008)

A series of symmetrical bolaamphiphiles possessing a diphenylbutadiene core and glucopyranoside head groups linked together by oligomethylene spacers, were synthesized and their thermotropic liquid crystalline properties ...
Stability of glucose oxidase activity of Aspergillus niger spores produced by solid-state fermentation and their role as biocatalysts in bioconversion reaction

Sumitra, R; Fontanille, P; Pandey, A; Larroche, C (Faculty Food Technology Biotechnology, 2008)

The aim of this work is to demonstrate the role of conidial spores as a reservoir of glucose oxidase and their stability as a biocatalyst in the bioconversion reaction for the production of gluconic acid. Solid-state ...
Role of structural water molecule in HIV protease-inhibitor complexes: A QM/MM study

Suresh, C H; Mary Vargheese, A; Vijayalakshmi, K P; Neeta Mohan; Koga, N (Wiley, 2008)

Structural water molecule 301 found at the interface of HIV protease-inhibitor complexes function as a hydrogen bond (H-bond) donor to carbonyl groups of the inhibitor as well as H-bond acceptor to amide/amine groups of ...
Permeabilization and inhibition of the germination of spores of Aspergillus niger for gluconic acid production from glucose

Sumitra, R; Fontanille, P; Pandey, A; Larroche, C (Elsevier, 2008)

In this study, the role of citral to permeabilize the spores of Aspergillus niger and replace sodium azide in the bioconversion medium was studied. Further, characterization of glucose oxidase of spores was carried out by ...
Fed-batch production of gluconic acid by Terpene-treated aspergillus niger spores

Sumitra, R; Fontanille, P; Pandey, A; Larroche, C (Springer, 2008)

Aspergillus niger spores were used as catalyst in the bioconversion of glucose to gluconic acid. Spores produced by solid-state fermentation were treated with 15 different terpenes including monoterpenes and monoterpenoids ...
Semiflexible random thermotropic copolymers from 8-(3-hydroxy phenyl) octanoic acid and 3-chloro-4-hydroxy benzoic acid/3,5-dibromo-4-hydroxy benzoic acid

Sumi Mitra; Pillai, C K S (Wiley, 2008)

Two series of semiflexible random thermotropic copolymers containing 8-(3-hydroxy phenyl) octanoic acid (HPOA) with either 3-chloro-4-hydroxy benzoic acid or 3,5-dibromo-4-hydroxy benzoic acid were prepared by melt ...
Exploration of fungal spores as a possible storehouse of proteolytic biocatalysts

Sumantha, A; Fontanille, P; Larroche, C; Pandey, A (Springer, 2008)

Studies were carried out to define the relation between enzyme production and fungal sporulation, in solid-state cultivation conditions of the filamentous fungus Aspergillus oryzae NRRL 2217 to get information on possible ...

Now showing items 21-40 of 172

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