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  1. No Access

    Article

    Rewriting system of certain semigroups with three generators

    In this paper, we study some properties of semigroups with presentation \(\left\langle a,b, c\ ;\ a^p=b^s, b^r=c^v, c^u=a^q\right\rangle\) ...

    M. S. M. Asri, W. A. M. Othman, K. B. Wong in Applicable Algebra in Engineering, Communi… (2023)

  2. Article

    Open Access

    Collapsin response mediator protein-1 (CRMP1) acts as an invasion and metastasis suppressor of prostate cancer via its suppression of epithelial–mesenchymal transition and remodeling of actin cytoskeleton organization

    The cancer cells can acquire migration and invasion capacities during the metastasis process through the developmental regulatory program epithelial–mesenchymal-transition (EMT), and through its reverse proces...

    G Cai, D Wu, Z Wang, Z Xu, K-B Wong, C-F Ng, F L Chan, S Yu in Oncogene (2017)

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  3. No Access

    Article

    Residual finiteness, subgroup separability and conjugacy separability of certain HNN extensions

    In this note we shall give characterisations for HNN extensions of non-cyclic polycyclic-by-finite groups with normal infinite cyclic associated subgroups to be residually finite, subgroup separable and conjug...

    K. B. Wong, P. C. Wong in Mathematica Slovaca (2012)

  4. No Access

    Article

    Properties of certain semigroups and their potential as platforms for cryptosystems

    In this paper, we study some properties of semigroups with presentation 〈a,b ; a p =b r ,a ...

    P. H. Kropholler, S. J. Pride, W. A. M. Othman, K. B. Wong, P. C. Wong in Semigroup Forum (2010)

  5. No Access

    Chapter

    Second Harmonic Generation in GaAs-AlAs and Si-SiGe Quantum Well Structures

    We present full scale relativistic pseudopotential calculations of both the first and second order susceptibility in p-type GaAs-AlAs and Si-SiGe structures. The frequency dependence of the linear and non-line...

    E. Corbin, M. J. Shaw, K. B. Wong, M. Jaros in Quantum Well Intersubband Transition Physi… (1994)

  6. No Access

    Chapter

    Optical Properties of Imperfecṫ Si-Ge Heterostructures

    We compare the strength of optical spectra in ordered ultrathin period superlattices with those of strained (perfect and imperfect) SiGe alloys and find that the former should be significantly stronger irrespe...

    M. Jaros, A. W. Beavis, R. J. Turton… in Semiconductor Interfaces at the Sub-Nanome… (1993)

  7. No Access

    Article

    Wave Function Engineering of Linear and Non-Linear Optical Response in Si-Ge Quantum Well Structures and Superlattices

    We show that the infinite Si-Ge superlattices predicted to exhibit strong optical transitions across the fundamental gap and between conduction subbands also give rise to significant optical nonlinearities. Ef...

    M. Jaros, R. J. Turton, K. B. Wong in MRS Online Proceedings Library (1991)

  8. No Access

    Chapter

    Microscopic Theory of Semiconductor Superlattices

    We have carried out the first microscopic calculations of the electronic structure and optical properties of semiconductor superlattices (e.g. Si-Ge, HgTe-CdTe) with real interfaces, i.e. structures in which t...

    M. Jaros, L. D. L. Brown, A. W. Beavis… in Condensed Systems of Low Dimensionality (1991)

  9. No Access

    Article

    Optical properties of Si-Ge superlattices

    All existing models of the electronic and optical properties of Si-Ge heterostructures are based on an idealised, infinite superlattice model with abrupt interfaces. In this study we adopt a computational mode...

    M. Jaros, K. B. Wong, R. J. Turton in Journal of Electronic Materials (1990)