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Now showing items 2361-2380 of 2767

Size-Dependent Chemistry: Properties of Nanocrystals

Rao, C N R; Kulkarni, G U; Thomas, P John; Edwards, Peter P (WILEY-VCH Verlag GmbH, 2002-01-04)

Properties of materials determined by their size are indeed fascinating and form the basis of the emerging area of nanoscience. In this article, we examine the size dependent electronic structure and properties of nanocrystals ...
Nanotubes of the disulfides of groups 4 and 5 metals

Nath, Manashi; Rao, C N R (International Union of Pure and Applied Chemistry, 2002-09)

The layered chalcogenides, having structures analogous to graphite, are known to be unstable toward bending and show high propensity to form curved structures, thus eliminating dangling bonds at the edges. Since the discovery ...
Electrochemical tuning of band structure of single-walled carbon nanotubes probed by in situ resonance Raman scattering

Ghosh, Shankar; Sood, A K; Rao, C N R (American Institute of Physics, 2002-07-15)

In situ resonance Raman scattering of single-walled carbon nanotubes investigated under electrochemical biasing demonstrates that the intensity of the radial breathing mode varies significantly in a nonmonotonic manner as ...
An organically templated iron sulfate with a distorted Kagome lattice exhibiting unusual magnetic properties

Paul, Geo; Choudhury, Amitava; Rao, C N R (Royal Society of Chemistry, 2002)

A layered iron sulfate of the composition [H3N(CH2)(2)NH2(CH2)(2)NH2(CH2)(2)NH3][(Fe3F6)-F-II(SO4)(2)], possessing a distorted Kagome lattice, prepared hydrothermally, is found to exhibit magnetic hysteresis like a ferrimagnet ...
Carbothermal synthesis of the nanostructures of Al2O3 and ZnO

Gundiah, Gautam; Deepak, F L; Govindaraj, A; Rao, C N R (Kluwer Academic/Plenum Publishing Corporation, 2003-10)

Nanostructures of Al2O3 and ZnO have been synthesized by a carbothermal route involving the reaction of the metal or the metal oxide with carbon. In the case of Al2O3, nanowires and nanotubes are obtained starting with Al ...
Hydrogel route to nanotubes of metal oxides and sulfates

Gundiah, Gautam; Mukhopadhyay, Samrat; Tumkurkar, Usha Govind; Govindaraj, A; Maitra, Uday; Rao, C N R (Royal Society of Chemistry, 2003)

A tripodal cholamide-based hydrogel has been employed as a template to synthesize inorganic nanotubes. Besides nanotubes of oxides such as SiO2, TiO2, ZrO2, WO3 and ZnO, nanotubes of sulfates such as the water-soluble ZnSO4 ...
New strategies for the synthesis of t-selenium nanorods and nanowires

Gautam, Ujjal K; Nath, Manashi; Rao, C N R (Royal Society of Chemistry, 2003)

Two different strategies for the synthesis of t-selenium nanorods and nanowires are described, wherein the solution based method involves a reaction of selenium powder with NaBH4 while the other employs the thermal ...
Synthesis, Structure, and the Unusual Magnetic Properties of an Amine-Templated Iron(II) Sulfate Possessing the Kagome Lattice

Rao, C N R; Sampathkumaran, E V; Nagarajan, R; Paul, Geo; Behera, J N; Choudhury, Amitava (American Chemical Society, 2004-04-20)

An amine-templated iron(II) sulfate of the composition [H3N(CH2)(6)NH3] [(Fe1.5F3)-F-II(SO4)].0.5H(2)O, 1, representing an example of a Kagome lattice with Fe in the +2 state, has been synthesized under solvothermal ...
Controlled synthesis of crystalline tellurium nanorods, nanowires, nanobelts and related structures by a self-seeding solution process

Gautam, Ujjal K; Rao, C N R (Royal Society Chemistry, 2004)

Single crystalline nanorods and nanowires of t-Te have been prepared by a simple solution route. The procedure involves the disproportionation of NaHTe, prepared by the reduction of Te with NaBH4. By carefully controlling ...
Brillouin Scattering Investigation of Solvation Dynamics in Succinonitrile-Lithium Salt Plastic Crystalline Electrolytes

Das, Supti; Bhadram, Venkata Srinu; Narayana, Chandrabhas; Bhattacharyya, Aninda J (American Chemical Society, 2011-11-03)

Temperature dependent Brillouin scattering studies have been performed to ascertain the influence of solvent dynamics on ion-transport in succinonitrile-lithium salt plastic crystalline electrolytes. Though very rarely ...
Current-induced phase control in charged-ordered Nd0.5Ca0.5MnO3 and Pr0.6Ca0.4MnO3 crystals

Parashar, Sachin; Sudheendra, L; Raju, A R; Rao, C N R (American Institute of Physics, 2004-02-15)

Single crystals of Nd0.5Ca0.5MnO3 and Pr0.6Ca0.4MnO3 show current-induced insulator-metal (IM) transitions at low temperatures. In addition, the charge-ordering transition temperature, T-co, decreases with increasing ...
Synthesis, Structure, and Magnetic Properties of Amine-Templated Open-Framework Nickel(II) Sulfates

Behera, J N; Gopalkrishnan, K V; Rao, C N R (American Chemical Society, 2004-04-19)

Two organically templated nickel sulfates of the compositions [C4N2H12][Ni3F2(SO4)(3)(H2O)(2)] (I) and [C4N2H12][Ni2F4-(SO4)H2O] (II) with open architectures have been synthesized under hydro/solvothermal conditions in the ...
A Brillouin scattering study of La0.77Ca0.23MnO3 across the metal-insulator transition

Seikh, Md Motin; Narayana, Chandrabhas; Sudheendra, L; Sood, A K; Rao, C N R (IOP Publishing Ltd, 2004-06-23)

Temperature-dependent Brillouin scattering studies have been carried out on La0.77Ca0.23MnO3 across the paramagnetic insulator-ferromagnetic metal (I-M) transition (T-C similar to 230 K). The spectra show modes corresponding ...
Open-framework zinc and cobalt phosphates synthesized by the tributylphosphate route

Neeraj, S; Rao, C N R; Cheetham, Anthony K (Royal Society of Chemistry, 2004-03-07)

By employing tributylphosphate as the source of phosphorus, several open-framework zinc and cobalt phosphates have been prepared hydrothermally. Of the three new zinc phosphates [C6N2H18][Zn(HPO4)(2)], I, has a linear chain ...
Effect of Hexachlorobenzene on Haem Synthesis

Rajamanickam, Chellam; Amrutavalli, J; Rao, M R S; Padmanaban, G (The Biochemical Society (Portland Press), 1972)

Several drugs are known to induce the liver microsomal mixed-function oxidase system when administered in vivo or even in vitro in cell culture. A sequence of events has been suggested in which the drug is visualized to ...
Isolation and Characterization of Binding Proteins for Retinol from the Cytosol, Nucleosol and Chromatin of the Oviduct Magnum of Laying Hens

Rao, M R S; Prasad, V R; Padmanaban, Govindarajan; Ganguly, Jagannath (The Biochemical Society, 1979)

Protein fractions that bind retinol were isolated from the cytosol, nucleosol and chromatin of the oviduct magnum of laying hens. The proteins isolated from the three sources showed similar elution profiles on chromatography ...
An electron paramagnetic resonance study of electron-hole asymmetry in charge ordered Pr1-xCaxMnO3 (x=0.64,0.36)

Joshi, Janhavi P; Sarathy, K Vijaya; Sood, A K; Bhat, S V; Rao, C N R (IOP Publishing Ltd, 2004-04-28)

We present and compare the results of temperature-dependent electron paramagnetic resonance (EPR) studies on Pr1-xCaxMnO3 for x = 0.64, which is electron-doped, with results of studies on the hole-doped, x = 0.36 composition. ...
Elastic and chemical contributions to the stability of magnetic surface alloys on Ru(0001)

Marathe, Madhura; Imam, Mighfar; Narasimhan, Shobhana (American Physical Society, 2009-02)

We have used density-functional theory to study the miscibility and magnetic properties of surface alloys. Our systems consist of a single pseudomorphic layer of MxN1-x on the Ru(0001) surface, where M=Fe or Co, and N=Pt, ...
Characterization of the zinc-metalloprotein nature of rat spermatidal protein TP2

Kundu, Tapas K; Rao, M R S (Elsevier Science BV, 1994-08-29)

Spermatidal transition protein, TP2, was purified from rat testes by Hg-affinity chromatography. The present study reports the details of the zinc-metalloprotein nature of TP2 by employing the Zn-65-blotting technique. ...
CpG Islands in Chromatin Organization and Gene Expression

Kundu, Tapas K; Rao, M R S (Japanese Biochemical Society, 1999-02)

CpG islands are stretches of DNA sequence that are enriched in the (CpG)(n) repeat and are present in close association with all housekeeping genes as well as some tissue-specific genes in the mammalian genome. Methylation ...

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