DSpace at Bose Institute: Recent submissions

Now showing items 1861-1880 of 2749

    • Regions and Residues of an Asymmetric Operator DNA Interacting with the Monomeric Repressor of Temperate Mycobacteriophage L1 

      Bandhu, Amitava; Ganguly, Tridib; Jana, Biswanath; Mondal, Rajkrishna; Sau, Subrata (AMER CHEMICAL SOC, 2010-05-18)
      Previously, the repressor protein of mycobacteriophage L1 bound to two operator DNAs with dissimilar affinity. Surprisingly, the putative operator consensus sequence, 5'GGTGGa/cTGTCAAG, lacks the dyad symmetry reported for ...

    • Characterization of an unusual cold shock protein from Staphylococcus aureus 

      Chanda, Palas Kumar; Bandhu, Amitava; Jana, Biswanath; Mondal, Rajkrishna; Ganguly, Tridib; Sau, Keya; Lee, Chia Y.; Chakrabarti, Gopal; Sau, Subrata (WILEY-V C H VERLAG GMBH, 2010-12)
      Of the three cold shock proteins expressed by Staphylococcus aureus, CspC is induced poorly by cold but strongly by various antibiotics and toxic chemicals. Using a purified CspC, here we demonstrate that it exists as a ...

    • An Oligopeptide Transporter of Mycobacterium tuberculosis Regulates Cytokine Release and Apoptosis of Infected Macrophages 

      Dasgupta, Arunava; Sureka, Kamakshi; Mitra, Devrani; Saha, Baisakhee; Sanyal, Sourav; Das, Amit K.; Chakrabarti, Parul; Jackson, Mary; Gicquel, Brigitte; Kundu, Manikuntala; Basu, Joyoti (PUBLIC LIBRARY SCIENCE, 2010-08-17)
      Background: The Mycobacterium tuberculosis genome encodes two peptide transporters encoded by Rv3665c-Rv3662c and Rv1280c-Rv1283c. Both belong to the family of ABC transporters containing two nucleotide-binding subunits, ...

    • Microscopic realization of cross-correlated noise processes 

      Shit, Anindita; Chattopadhyay, Sudip; Banik, Suman Kumar; Ray Chaudhuri, Jyotipratim (American Institute of Physics, 2010)
      We present a microscopic theory of cross-correlated noise processes, starting from a Hamiltonian system-reservoir description. In the proposed model, the system is nonlinearly coupled to a reservoir composed of harmonic ...

    • Effect of Methylglyoxal Modification of Human alpha-Crystallin on the Structure, Stability and Chaperone Function 

      Mukhopadhay, Soma; Kar, Manoj; Das, Kali Pada (SPRINGER, 2010-11)
      alpha-Crystallin functions as a molecular chaperone and maintains transparency of eye lens by protecting other lens-proteins. Non-enzymatic glycation of alpha-crystallin by methylglyoxal, plays a crucial role on its chaperone ...

    • Quantum mechanical effect of path-polarization Contextuality for a Single Photon 

      Pan, A. K.; Home, Dipankar (SPRINGER/PLENUM PUBLISHERS, 2010-08-01)
      Using measurements pertaining to a suitable Mach-Zehnder (MZ) type setup, a curious quantum mechanical effect of contextuality between the path and the polarization degrees of freedom of a polarized photon is demonstrated, ...

    • Generalized Einstein relation in tilted periodic potential: a semiclassical approach 

      Shit, Anindita; Chattopadhyay, Sudip; Banik, Suman Kumar; Chaudhuri, Jyotipratim Ray (AMER CHEMICAL SOC, 2010-06-17)
      This paper concerns the investigation of the quantum motion of a system in a dissipative Ohmic heat bath in the presence of an external field using the traditional system-reservoir model. Using physically motivated initial ...

    • Pair and single neutron transfer with Borromean 8He 

      Lemasson, A.; Navin, A.; Rejmunda, M.; Keeley, N.; Zelevinsky, V.; Bhattacharyya, S.; Shrivastava, A.; Bazin, D.; Beaumel, D.; Blumenfeld, Y.; Chatterjee, A.; Gupta, Dhruba; De France, G.; Jacquot, B.; Labiche, M.; Lemmon, R.; Nanal, V.; Nyberg, J.; Pillay, R. G.; Raabe, R.; Ramachandran, K.; Scarpaci, Jean Antoine; Schmitt, Christoph; Simenel, C.; Stefan, I.; Timis, C. N. (ELSEVIER SCIENCE BV, 2011-03-21)
      Direct observation of the survival of 199Au residues after 2n transfer in the 8He + 197Au system and the absence of the corresponding 67Cu in the 8He + 65Cu system at various energies are reported. The measurements of ...

    • AtPoiA, a homogue of mammalian DNA polymerase in Arabidopsis thaliana, is involved in the repair of UV-B induced DNA damage through the dark repair pathway 

      Roy, Sujit; Roy Choudhury, Swarup; Singh, Sanjay Kumar; Das, Kali Pada (OXFORD UNIV PRESS, 2011-02)
      Plants are constantly exposed to a wide range of environmental genotoxic stress factors including obligatory exposure to UV radiation in sunlight. Here, we report the functional characterization of a DNA repair protein, ...

    • Extreme nuclear shapes examined via giant dipole resonance lineshapes in hot light-mass systems 

      Pandit, D.; Mukhopadhyay, S.; Bhattacharya, S.; Pal, S.; De, A.; Bhattacharya, S.; Bhattacharya, C.; Banerjee, K.; Kundu, S.; Rana, T. K.; Dey, A.; Mukherjee, G.; Ghosh, T.; Gupta, Dhruba; Banerjee, S. R. (American Physical Society, 2010-06-16)
      The influence of alpha clustering on nuclear reaction dynamics is investigated using the giant dipole resonance (GDR) lineshape studies in the reactions (20)Ne (E(lab) = 145, 160 MeV) + (12)C and (20)Ne (E(lab) = 160 MeV) ...

    • Crystal structure and microstructure of cholesteryl oleyl carbonate 

      Das, Pradip; De, Joyes (ELSEVIER IRELAND, 2011-01)
      The crystal structure as well as the microstructure, i.e., size and strain, of crystallites of cholesteryl oleyl carbonate was determined from X-ray powder diffraction data. The X-ray line broadening was analyzed through ...

    • Correlated electrons in optically tunable quantum dots: Building an electron dimer molecule 

      Singha, Achintya; Pellegrini, Vittorio; Pinczuk, Aron; Pfeiffer, Loren N.; West, Ken W.; Rontani, Massimo (American Physical Society, 2010-06-15)
      We observe the low-lying excitations of a molecular dimer formed by two electrons in a GaAs semiconductor quantum dot in which the number of confined electrons is tuned by optical illumination. By employing inelastic light ...

    • Two-Dimensional Mott-Hubbard Electrons in an Artificial Honeycomb Lattice 

      Singha, Achintya; Gibertini, M.; Karmakar, B.; Yuan, S.; Polini, M.; Vignale, Giovanni; Katsnelson, M. I.; Pinczuk, A.; Pfeiffer, L. N.; West, K. W.; Pellegrini, V. (AMER ASSOC ADVANCEMENT SCIENCE, 2011-06-03)
      Artificial crystal lattices can be used to tune repulsive Coulomb interactions between electrons. We trapped electrons, confined as a two-dimensional gas in a gallium arsenide quantum well, in a nanofabricated lattice with ...

    • An expedient synthesis of novel 2-substituted thiazolo[4,5-f]isoquinolines/quinolines and benzo[1,2-d:4,3-d ']bisthiazoles and their potential as inhibitors of COX-1 and COX-2 

      Chakrabarty, Manas; Mukherji, Ajanta; Karmakar, Sulakshana; Mukherjee, Ratna; Nagai, Kenichiro; Geronikaki, Athina; Eleni, Pitta (ARKAT USA, 2010-11-07)
      An efficient, general synthesis of 2-substituted thiazolo[4,5-f]isoquinolines, thiazolo[4,5-f]quinolines and benzo[1,2-d:4,3-d']bisthiazoles has been accomplished from 5-nitroisoquinoline/quinoline and 6-nitrobenzothiazole, ...

    • Delocalized-localized transition in a semiconductor two-dimensional honeycomb lattice 

      De Simoni, G.; Singha, Achintya; Gibertini, M.; Karmakar, B.; Polini, M.; Piazza, V.; Pfeiffer, L. N.; West, K. W.; Beltram, F.; Pellegrini, V. (AMER INST PHYSICS, 2010-09-27)
      We report the magnetotransport properties of a two-dimensional electron gas in a modulation-doped AlGaAs/GaAs heterostructure subjected to a lateral potential with honeycomb geometry. Periodic oscillations of the ...

    • Quantum discord in the ground and thermal states of spin clusters 

      Bose, Indrani; Pal, A. K. (IOP PUBLISHING LTD, 2011-02-28)
      Quantum discord (QD) is a general measure of bipartite quantum correlations with a potential role in quantum information processing tasks. Spin clusters serve as ideal candidates for the implementation of some of the ...

    • Motion of bound domain walls in a spin ladder 

      Bose, Indrani; Pal, A. K. (Springer, 2010-09-01)
      The elementary excitation spectrum of the spin-1/2 antiferromagnetic (AFM) Heisenberg chain is described in terms of a pair of freely propagating spinons. In the case of the Ising-like Heisenberg Hamiltonian spinons can ...

    • Energy dependence of gamma detection efficiency for SED R-12 

      Sarkar, R.; Chatterjee, Barun Kumar; Roy, S.C. (ELSEVIER SCIENCE BV, 2010-07-01)
      Superheated emulsion detector consists of droplets of two metastable states, one with a much shorter life-time (second metastable state) than the other (normal metastable state). The SED made from R-12 (CCl(2)F(2)) is ...

    • Reactions with the double-Borromean nucleus 8He 

      Lemasson, A.; Navin, A.; Keeley, N.; Rejmund, M.; Bhattacharyya, S.; Shrivastava, A.; Bazin, D.; Beaumel, D.; Blumenfeld, Y.; Chatterjee, A.; Gupta, Dhruba; De France, G.; Jacquot, B.; Labiche, M.; Lemmon, R.; Nanal, V.; Nyberg, J.; Pillay, R. G.; Raabe, R.; Ramachandran, K.; Scarpaci, Jean Antoine; Simenel, C.; Stefan, I.; Timis, C. N. (American Physical Society, 2010-10-29)
      Differential cross sections for elastic-scattering and neutron-transfer reactions along with cross sections for fusion in the He-8+Cu-65 system are reported at energies above the Coulomb barrier (E-lab = 19.9 and 30.6 MeV). ...

    • Characteristics of acoustic emissions during nucleation of superheated droplets 

      Mondal, P.K.; Chatterjee, Barun Kumar (ELSEVIER SCIENCE BV, 2011-01-17)
      Superheated droplet nucleation and subsequent bubble oscillation produces an acoustic pressure pulse that contains valuable information about the nucleation process. Spectral analysis of the pressure pulse indicates ...