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Sökning: WFRF:(Ghorai P.)

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1.
  • Das, D., et al. (författare)
  • Identical RNA-protein interactions in vivo and in vitro and a scheme of folding the newly synthesized proteins by ribosomes
  • 2012
  • Ingår i: Journal of Biological Chemistry. - 0021-9258 .- 1083-351X. ; 287:44, s. 37508-37521
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Ribosomal PTC acts as a protein folding modulator in vivo and in vitro. Results: A fixed set of nucleotides in the PTC interacts to fold polypeptides in vivo and in vitro. Conclusion: Folding all proteins through interaction with the same set of nucleotides in PTC implies they have intrinsic homology. Significance: Hundreds of proteins showed an identical cumulative hydrophobicity plot for amino acids.
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2.
  • Nayak, S., et al. (författare)
  • Cationic redistribution induced spin-glass and cluster-glass states in spinel ferrite
  • 2022
  • Ingår i: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 106:17
  • Tidskriftsartikel (refereegranskat)abstract
    • The effect of the cationic redistribution on the complex spinel structure and magnetic properties were investigated in Zn0.7Cu0.3Fe2O4 ferrite. X-ray photoelectron spectroscopy and x-ray diffraction studies revealed that the system exhibits a mixed spinel structure with Fe3+, Zn2+, and Cu2+ occupying both tetrahedral and octahedral sublattices. The DC magnetization results revealed the absence of long-range magnetic order in the system. Furthermore, the AC susceptibility data analysis using dynamic scaling laws suggests that the system exhibits magnetic relaxation below two different temperatures: (i) a spin-glass–like transition at low temperature (∼49.2K) with critical exponent 10.3 and spin-flip time ∼10−11s, and (ii) a cluster-glass–like transition at higher temperature (∼317K) with critical exponent 4.6 and spin-flip time ∼10−10s. The existence of glassy behavior and magnetic memory effects below the spin-glass transition temperature proves that the system is in nonequilibrium dynamical state. The coexistence of spin-glass and cluster-glass along with the thermal hysteresis between these two transitions could widen the technological applications of these systems.
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