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  • Physics  (3)
  • UA 5534.B  (3)
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  • Physics  (3)
RVK
  • UA 5534.B  (3)
  • 1
    Online Resource
    Online Resource
    Analytical study on the generalized Davydov model in the alpha helical proteins
    World Scientific Pub Co Pte Ltd ; 2017
    In:  Modern Physics Letters B Vol. 31, No. 16 ( 2017-06-10), p. 1750178-
    Details
    In: Modern Physics Letters B, World Scientific Pub Co Pte Ltd, Vol. 31, No. 16 ( 2017-06-10), p. 1750178-
    Abstract: In this paper, we investigate the dynamics of a generalized Davydov model derived from an infinite chain of alpha helical protein molecules which contain three hydrogen bonding spines running almost parallel to the helical axis. Through the introduction of the auxiliary function, the bilinear form, one-, two- and three-soliton solutions for the generalized Davydov model are obtained firstly. Propagation and interactions of solitons have been investigated analytically and graphically. The amplitude of the soliton is only related to the complex parameter [Formula: see text] and real parameter [Formula: see text] with a range of [Formula: see text]. The velocity of the soliton is only related to the complex parameter [Formula: see text] , real parameter [Formula: see text], lattice parameter [Formula: see text] , and physical parameters [Formula: see text], [Formula: see text] and [Formula: see text]. Overtaking and head-on interactions of two and three solitons are presented. The common in the interactions of three solitons is the directions of the solitons change after the interactions. The soliton derived in this paper is expected to have potential applications in the alpha helical proteins.
    Type of Medium: Online Resource
    ISSN: 0217-9849 , 1793-6640
    URL: Article
    DOI: 10.1142/S0217984917501780
    RVK:
    UA 5534.B
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2017
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Er3+/Yb3+ co-doped phosphate glass waveguides formed by the H+ ion implantation
    World Scientific Pub Co Pte Ltd ; 2021
    In:  Modern Physics Letters B Vol. 35, No. 05 ( 2021-02-20), p. 2150099-
    Details
    In: Modern Physics Letters B, World Scientific Pub Co Pte Ltd, Vol. 35, No. 05 ( 2021-02-20), p. 2150099-
    Abstract: The 400 keV proton implantation with a fluence of [Formula: see text] ions/cm 2 was applied on the [Formula: see text] co-doped phosphate glass to fabricate a planar waveguide structure. The mode profile at the end face of the waveguide was measured by the end-face coupling technique. The energy loss profile of the energetic protons was calculated by the SRIM 2013. The refractive index distribution was simulated by the reflectivity calculation method. Based on these results, the formation theory of the planar waveguides was discussed through simulating the energy loss distribution and analyzing the reconstructed refractive index profile, which could be used for applications in the future integrated optical systems.
    Type of Medium: Online Resource
    ISSN: 0217-9849 , 1793-6640
    URL: Article
    DOI: 10.1142/S0217984921500998
    RVK:
    UA 5534.B
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2021
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  • 3
    Online Resource
    Online Resource
    Pressure dependence of the electronic structure in kaolinite: A first-principles study
    World Scientific Pub Co Pte Ltd ; 2017
    In:  Modern Physics Letters B Vol. 31, No. 12 ( 2017-04-30), p. 1750194-
    Details
    In: Modern Physics Letters B, World Scientific Pub Co Pte Ltd, Vol. 31, No. 12 ( 2017-04-30), p. 1750194-
    Abstract: Using the first-principle methods, the pressure dependence of the electronic structure and band structure of kaolinite were studied within the local-density approximation. The calculated results show that pressure would chiefly alter the band structure of kaolinite, while pressure can have its main effect on the band gap of kaolinite. At p = 0.6 GPa, band structure of kaolinite first converts an indirect gap into a direct gap, and then recovers an indirect gap structure at p = 66.2 GPa because CBM shift in the band structure is under high-pressure. The bond Si–O is more stable than bond Al–O under pressure, in addition, pressure has a significant effect on the inner hydroxyl bond of kaolinite and leads to a large variation of H–O(inner) bond lengths. The calculated results will not only help to understand the electronic structure of kaolinite under pressure, but also provide theoretical guidance for deal with the safe problems of soft-rock tunnel engineering.
    Type of Medium: Online Resource
    ISSN: 0217-9849 , 1793-6640
    URL: Article
    DOI: 10.1142/S0217984917501949
    RVK:
    UA 5534.B
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2017
    Location Call Number Limitation Availability
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    Online Resource
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