International Journal of Materials Science and Applications

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Volume 9, Issue 2, March 2020

  • Excitons Diffusion Length, Tree Dimensionless Numbers and Mean Temperature Dependence of Semiconductor Performance Including Excitons

    Modou Faye, Ousmane Ngom, Saliou Ndiaye, Cheikh Mbow, Bassirou Ba

    Issue: Volume 9, Issue 2, March 2020
    Pages: 25-33
    Received: 27 March 2020
    Accepted: 20 April 2020
    Published: 18 May 2020
    DOI: 10.11648/j.ijmsa.20200902.11
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    Abstract: The author, taking into account the non-uniformity of dissociation, the recombination of excitons in the depletion region, as well as the variability of the coefficients as a function of temperature, used dimensional analysis. Thus, by grouping together the physical parameters, dependent and independent variables, he generates dimensionless numbers... Show More
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  • A Low Temperature Manufactured Portland Cement Clinker from Pulverized Waste of Fly Ash

    Hassan Hassanien Mohamed Darweesh

    Issue: Volume 9, Issue 2, March 2020
    Pages: 34-39
    Received: 21 April 2020
    Accepted: 18 May 2020
    Published: 28 June 2020
    DOI: 10.11648/j.ijmsa.20200902.12
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    Abstract: The possibility to produce both environmentally and friendly cement exclusively or solely from industrial byproducts such as pulverized fly ash (PFa) was investigated. A low clinkering temperature was attained or acquired to produce cement. It is capable to gain high early and late strength on hydration. The optimum quantities of PFa and clinkering... Show More
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