2013: Recent submissions

Now showing items 121-140 of 159

Inﬂuence of autocatalytic coating bath parameters on the formation of copper over surface treated boron carbide particles

Deepa, J P; Rajan, T P D; Pavithran, C; Pai, B C (Elsevier, 2013)

The functional and structural applications of boron carbide (B4C) for neutron shielding and engineering sectors are limited due to brittleness and low temperature oxidation; however its use is enhanced by the synthesis of ...
Isolation of proline-based cyclic dipeptides from Bacillus sp. N strain associated with rhabitid entomopathogenic nematode and its antimicrobial properties.

Nishanth Kumar; Mohandas, C; Bala Nambisan; Soban Kumar, D R; Ravi S Lankalapalli (Springer, 2013)

Entomopathogenic nematodes (EPN) are well-known as biological control agents and are found to have associated bacteria which can produce a wide range of bioactive secondary metabolites. We report herewith isolation of six ...
Thermal behavior and UV properties of organomodified kaolin oleochemically derived from rubber seed oils (Hevea brasiliensis) and tea seed oils (Camellia sinensis)

Mgbemena, C O; Ibekwe, N O; Peer Mohamed, A A; Rugmini Sukumar; Menon, A R R (Scientific Research, 2013)

Kaolin was modified using a chemical complex of hydrazine hydrate and oleochemical sodium salts derived from rubber seed oil (SRSO) and tea seed oil (STSO) respectively. Characterization of the pristine kaolin and the ...
Synthesis of chemically pure, luminescent Eu3+ doped HAp nanoparticles: A promising fluorescent probe for in vivo imaging applications.

Hasna, K; Sasanka Kumar, S; Komath, M; Manoj Raama Varma; Jayaraj, M K; Rajeev Kumar, K (Royal Society of Chemistry, 2013)

The poor solubility, poor biocompatibility and disposal issues make fluorescent quantum dots such as CdSe, CdS, ZnS, InP, InAs, etc. impractical for imaging tissues or intercellular structures. As calcium phosphate is the ...
Surface plasmon coupling in end-to-end linked gold nanorod dimers and trimers

Jatish Kumar; Wei, X Z; Barrow, S; Funston, A M; George Thomas, K; Mulvaney, P (Royal Society of Chemistry, 2013)

Colloidal gold nanorods were aligned end-to-end via dithiol coupling. The scattering properties of the resultant nanostructures were investigated at the single particle level by combining dark-field microscopy and high ...
A Cascade reaction actuated by Nucleophilic heterocyclic carbene catalyzed intramolecular addition of enals via homoenolate to r,β-unsaturated esters: Efficient synthesis of coumarin derivatives.

Sinu, C R; Padmaja, D V M; Ranjini, U P; Seetha Lakshmi, K C; Suresh, E; Vijay Nair, G (American Chemical Society, 2013)

A nucleophilic heterocyclic carbene mediated intramolecular homoenolate reaction strategy for the efficient synthesis of 4-alkyl substituted coumarins is described.
Guided supramolecular polymerization of oligo(p-phenylenevinylene) functionalized bismelamines.

Yamauchi, M; Kubota, S; Karatsu, T; Kitamura, A; Ajayaghosh, A; Yagai, S (Royal Society of Chemistry., 2013)

Bismelamines end-functionalized with oligo(p-phenylenevinylene) self-aggregate in nonpolar solvent to form short nanorods by helical π–π stacking. This inherent self-aggregation can be guided to a supramolecular polymerization ...
Pentafulvene-derived η3-allyltitanocenes as intermediates for the stereoselective functionalization of 5-membered carbocycles.

Joseph, J; Jaroschik, F; Radhakrishnan, K V; Vasse, Jean-Luc; Szymoniak, J (Royal Society of Chemistry, 2013)

Allyltitanocene complexes can be generated by reacting pentafulvenes with DIBAL-H and Cp2TiCl2. Their coupling with aldehydes affords homoallylic alcohols in a highly regio- and stereoselective manner. The potential of ...
Depositional environment of sediments along the Cuddalore coast of Tamilnadu, India.

Viveganandan, S; Lakshumanan, C; Sundararajan, M; Eswaramoorthi, S; Usha, N (NISCAIR, 2013)

Surficial sediments of beaches along the Cuddalore, central coast of Tamilnadu from Ponnaiyar estuarine to Thirumulaivasal were studied for their textural parameters namely Mean (Grain size) phi, Standard deviation, ...
Colorimetric detection of Al(III) ions based on triethylene glycol appended 8-propyloxy quinoline ester.

Jisha, B; Resmi, M R; Maya, R J; Luxmi Varma, R (Elsevier, 2013)

A triethylene glycol modified quinoline ester (PQTEG) is synthesised, which acts as a colorimetric sensor for Al3+ ions with a detection limit of 8 × 10−7 M in acetonitrile/water (95:5, v/v) solvent system. A visible colour ...
Brilliant photoluminescence and triboluminescence from ternary complexes of DyIII and TbIII with 3-Phenyl-4-propanoyl-5-isoxazolonate and a Bidentate Phosphine Oxide Coligand.

Biju, S; Gopakumar, N; Bünzli, J C G; Scopelliti, R; Kim, H K; Reddy, M L P (American Chemical Society., 2013)

Three new lanthanide heterocyclic β-diketonate complexes [Dy(PPI)3(EtOH)2] (1), [Dy(PPI)3(DPEPO)] (2), and [Tb(PPI)3(DPEPO)] (3) [where HPPI = 3-phenyl-4- p ro pa n o y l - 5 - i s o x a z o l one and DPEPO = b i s ( 2 ...
A mitochondria-specific visible-light sensitized europium β-diketonate complex with red emission.

Divya, V; Vandana, S; Raghu, K G; Reddy, M L P (RSC Publishing., 2013)

Our recently developed Eu3+ coordination compound, Eu(pfppd)3(tpy) [where Hpfppd = 4,4,5,5,5-pentafluoro-3-hydroxy-1-(phenanthren-3-yl)pentanedione and tpy = 2,2′:6,6′′-terpyridine] exhibits significant quantum yield ...
Mechanism for grain refinement and mechanical properties of AZ91 Mg alloy by carbon inoculation

Suresh, M; Srinivasan, A; Pillai, U T S; Pai, B C (Elsevier, 2013)

The effect of charcoal on the grain refinement and mechanical properties of the AZ91 is investigated in the present study. The results show addition of 0.4 wt% charcoal produced maximum grain refinement in the AZ91 Mg alloy ...
Effect of Antimony and Yttrium addition on the high temperature properties of AZ91 Magnesium Alloy

Arun Boby; Ravikumar, K K; Pillai, U T S; Pai, B C (Elsevier, 2013)

The effect of individual and combined additions of Y and Sb on the microstructure and mechanical properties of AZ91 alloy has been studied. The results indicate that the additions introduce new Al2Y and Mg3Sb2 phase along ...
Influence of Neodymium addition on the microstructure, mechanical and thermal properties of Mg-Si Alloys

Ajithkumar, K K; Abhilash, V; Pillai, U T S; Pai, B C; Chakraborty, M (Elsevier, 2013)

The present work aims to investigate the influence of neodymium addition on the microstructure, mechanical and thermal properties of Mg-Si alloys. Different proportions of (0.3, 0.6, 0.9 and 1.2 wt.%) Nd has been added to ...
Creep Behavior of AZ91 Magnesium Alloy

Srinivasan, A; Ajithkumar, K K; Swaminathan, J; Pillai, U T S; Pai, B C (Elsevier, 2013)

Effects of intermetallic phases on the creep behavior of AZ91 magnesium alloy have been studied. Thermally stable intermetallic phases such as Mg2Si and Mg3Sb2 are introduced deliberately in AZ91 alloy by the adding Si and ...
Chemical Indices, antioxidant activity and anti-inflammatory effect of extracts of the medicinal rice "Njavara" and Staple Varieties: A comparative study

Smitha, M; Rathnam Parvathy; Vasantha Shalini; Ratheesh, M; Helen, A; Jayalekshmy, A (Wiley, 2013)

Chemical indices, antioxidant and anti-inflammatory activity of extracts of bran of medicinal rice – Njavara “black glumed” type (NBb) and its rice (NBr), were studied in comparison with bran and rice of staple varieties: ...
Casting and characterization of LiMgPO4 glass free LTCC tape for microwave applications

Dhanesh, T; Abhilash, P; Sebastian, M T (Elsevier, 2013)

The LiMgPO4 ceramic has been prepared through the solid state ceramic route. The powder has an average particle size of 1.1 μm and BET surface area of 2.7 m2 g−1. Good dispersion of LiMgPO4 has been achieved in ethanol/xylene ...
One-pot synthesis of ultra-small cerium oxide nanodots exhibiting multi-colored ﬂuorescence

Asha Krishnan; Sreeremya, T S; Murray, E; Ghosh, S K (Elsevier, 2013)

CeO2 nanodots of diameter 2 nm have been synthesized by the thermolysis of cerium acetate in diphenylether in the presence of an oleic acid surfactant. The surfactant coating enabled them to be easily dispersible in nonpolar ...
Ba(Zn1/3Ta2/3)O3 ceramics reinforced high density polyethylene for microwave applications

Manu, K M; Soni, S; Murthy, V R K; Sebastian, M T (Springer, 2013)

The effect of Ba(Zn1/3Ta2/3)O3 (BZT) ceramic filler on the dielectric, mechanical and thermal properties of high density polyethylene (HDPE) matrix have been investigated. The dispersion of BZT particles in the matrix was ...

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