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Browsing 2012 by Issue Date

Now showing items 1-20 of 169

In vitro evaluation of physical vapor deposition coated beta titanium orthodontic archwires

Vinod Krishnan; Ravikumar, K K; Sukumaran, K; Jyothindra Kumar, K (E H. Angle Education and Research Foundation Inc., 2012)

Objective: To determine in vitro the frictional properties, surface morphology, and load deflection rate with looped designs of two newly developed titanium aluminum nitride (TiAlN) and tungsten carbide/carbon (WC/C) ...
Enhancement of bending strain tolerance and current carrying property of MgB2 based multifilamentary wires

Syju Thomas; Neson Varghese; Rahul, S; Devadas, K M; Vinod, K; Syamaprasad, U (Elsevier, 2012)

The effect of bending strain on current carrying capacity of MgB2 multifilamentary wires was studied with 4, 8 and 16 multifilamentary wires. The critical current density (JC) of straight wires and bent wires with 5, 10, ...
Biodiesel production and prediction of engine performance using SIMULINK model of trained neural network

Sharon, H; Jayaprakash, R; Karthigai Selvan, M; Soban Kumar, D R; Sundaresan, A; Karuppasamy, K (Elsevier, 2012)

Due to depletion and higher prices of crude oil, biodiesel is gaining more importance day by day. Biodiesel is renewable and eco-friendly and its emission profile is much lower than fossil fuels. A large number of researches ...
4,4,9,9-Tetraphenyl pyrroloindolizine: a structural analogue of calix[2] pyrrole

Gowri Sreedevi, K C; Ajesh P Thomas; Ramakrishnan, S; Salini, P S; Derry Holaday, M G; Reddy, M L P; Srinivasan, A (RSC Publishing, 2012)

Synthesis, spectral and structural characterization of a pyrroloindolizine derivative having structural similarity with calix[2]pyrrole is described. Here, two pyrrole rings are connected with two meso-carbon atoms having ...
DFT study on the mechanism of water-assisted dihydrogen elimination in group 6 octahedral metal hydride complexes

Sandhya, K S; Suresh, C H (RSC Publishing, 2012)

The reaction of water with octahedral bis-, tris- and tetrakis-( phosphine)tungsten, (phosphine)-molybdenum and (phosphine)chromium complexes has been studied using B3LYP/def2-TZVPP level of DFT to elucidate dissociative, ...
Periodically grafted Amphiphilic Copolymers: Nonionic analogues of Ionenes

Roy, R K; Bhoje Gowd, E; Ramakrishnan, S (American Chemical Society, USA, 2012)

We describe a novel class of periodically grafted amphiphilic copolymers (PGACs) that could serve as nonionic functional mimics of ionenes, the primary difference being that the periodically occurring charged units along ...
Natural rubber/organoclay nanocomposite from tea (Camellia Sinensis) seed oil derivative

Yahaya, L E; Adebowale, K O; Menon, A R R; Olu-Owolabi, B I (Scientific & Academic Publishing, 2012)

Sodium salt of tea seed oil (TSO-Na) was organomodified with kaolin (China clay). The organo-kaolin was characterized by determining the FTIR and XRD. Results indicated that TSO-Na was successfully intercalated onto the ...
Nanostructured GdeCeO2 electrolyte for solid oxide fuel cell by aqueous tape casting

Akbari-Fakhrabadi, A; Mangalaraja, R V; Sanhueza, F A; Avila, R E; Ananthakumar, S; Chan, S H (Elsevier, 2012)

Gadolinia-doped ceria (Ce0.9Gd0.1O1.95, GDC) electrolyte was fabricated by aqueous-based tape casting method for solid oxide fuel cells (SOFCs). The ceramic powder prepared by combustion synthesis was used with poly acrylic ...
Perchlorate, chlorate and bromate in water samples from the south-west coast of India

Anupama, V N; Kannan, K; Prajeesh, P V G; Rugmini Sukumar; Krishnakumar, B (IWA Publishing, 2012)

Occurrence of perchlorate (ClO4 ), chlorate (ClO3 ) and bromate (BrO3 ) in public drinking, open well and surface water sources at 20 locations in the South-West coastal state of Kerala (India) is reported. The analysis ...
Effect of enzyme assisted extraction on quality and yield of volatile oil from black pepper and cardamom

Janu, Chandran; Padmakumari Amma, K P; Nirmala Menon, A; Jayamurthy, P; Nisha, P (Springer, 2012)

The present study investigated the effect of enzyme pre-treatment on extraction of active compounds from spices, namely, black pepper and cardamom. A mixture of enzymes, namely, Lumicellulae (a mixture of cellulase, ...
Characterization of leucine amino peptidase from Streptomyces gedanensis and its applications for protein hydrolysis

Raji, R; Dhar, K S; Nampoothiri, K M; Pandey, A (Elsevier, 2012)

The aim of this work was to purify and characterize the extra-cellular leucine amino peptidase (LAP)from Streptomyces gedanensis and also study its applications for protein hydrolysis. The enzyme was purified to homogeneity ...
Sesquiterpene lactones isolated from elephantopus scaber L. inhibits human lymphocyte proliferation and the growth of tumour cell lines and induces apoptosis in vitro

Geetha, B S; Mangalam S Nair; Latha, P G; Remani, P (Hindawi Publishing Corporation, 2012)

This study was designed to isolate the compounds responsible for the cytotoxic properties of South Indian Elephantopus scaber L. and further investigate their effects on quiescent and proliferating cells. Bioassay-guided ...
Preparation of poly(L-lactide) blends and biodegradation by lentzea waywayandensis

Nimisha R Nair; Nampoothiri, K M; Pandey, A (Springer, 2012)

As a biodegradable polyester, polylactide (PLA) has applications as a packaging material, in biomedical fields and tissue engineering. With the dual aim of improving its properties and biodegradability, PLA was blended ...
Three dimensional CFD simulation of pneumatic coal injection in a direct reduction rotary kiln

Manju, M S; Savithri, S (Elsevier, 2012)

The pneumatic coal injection and combustion process in a commercial rotary kiln is modeled in this work using a two phase flow theory approach. The physical and chemical phenomena of the turbulent reacting flow is simulated ...
Aminopeptidase from streptomyces gedanensis as a useful tool for protein hydrolysate preparations with improved functional properties

Raji, R; Dhar, K S; Nampoothiri, K M; Pandey, A (Institute of Food Technologists, 2012)

The aim of the present study was to evaluate the efficiency of amino peptidase (AP) from Streptomyces gedanensis to produce protein hydrolysates (PHs) with better antioxidant, nutritional, and functional properties and to ...
Organosolvent pretreatment and enzymatic hydrolysis of rice straw for the production of bioethanol

Sindhu, R; Binod, P; Rajeev K Sukumaran; Pandey, A (Springer, 2012)

The present study investigates the operational conditions for organosolvent pretreatment and hydrolysis of rice straw. Among the different organic acids and organic solvents tested, acetone was found to be most effective ...
Photocatalytic activity enhancement in doped titanium dioxide by crystal defects

Jaimy, K B; Safeena, V P; Ghosh, S K; Hebalkar, N Y; Warrier, K G K (RSC publishing, 2012)

Visible light sensitive Fe3+ and Ce4+ co-doped nano TiO2 photocatalyst has been prepared by a modified aqueous sol–gel method and the activity has been measured in terms of degradation of MB dye. Both dopants shifted the ...
Mesoporous organic–inorganic hybrid aerogels through ultrasonic assisted sol–gel intercalation of silica–PEG in bentonite for effective removal of dyes, volatile organic pollutants and petroleum products from aqueous solution

Suchithra, P S; Linsha, V; Peer Mohamed, A; Ananthakumar, S (Elsevier, 2012)

Hybrid mesoporous materials with high surface area (1144 m2/g) and enhanced thermal stability were achieved through ultrasonication assisted sol–gel intercalation technique using bentonite clay and PEG grafted sol gel ...
Biochemical characterization of recombinant methionine aminopeptidases (MAPs) from Mycobacterium tuberculosis H37Rv

Sai Shyam, N; Nampoothiri, K M (Springer, 2012)

Methionine aminopeptidase (MAP) performs the essential post-translational N-terminal methionine excision(NME) of nascent polypeptides during protein synthesis.To characterize MAP from Mycobacterium tuberculosis,two ...
Corynebacterium glutamicum as a potent biocatalyst for the bioconversion of pentose sugars to value-added products

Vipin Gopinath; Anusree, M; Dhar, K S; Nampoothiri, K M (Springer, 2012)

Corynebacterium glutamicum, the industrial microbe traditionally used for the production of amino acids,proved its value for the fermentative production of diverse products through genetic/metabolic engineering. A successful ...

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