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  1. No Access

    Article

    Gypsum crystals grown in silica gel in the presence of citric acid as additive: a study on microhardness

    P. Kumareson, S. Devanarayanan in Journal of Materials Science Letters (1992)

  2. No Access

    Article

    Crystal growth of steroids in silica gel: cholesteryl acetate

    S. Devanarayanan, S. Narayana Kalkura in Journal of Materials Science Letters (1991)

  3. No Access

    Article

    Growth of β-sitosterol crystals in silica gel and their characterization

    S. Narayana Kalkura, S. Devanarayanan in Journal of Materials Science Letters (1989)

  4. No Access

    Article

    Microhardness studies on calcium sulphate dihydrate crystals grown in silica gel in the presence and absence of barium chloride as additive

    P. Kumareson, S. Devanarayanan in Journal of Materials Science Letters (1989)

  5. No Access

    Article

    Microtopographical and Raman spectral studies on calcium sulphate dihydrate (gypsum) crystals grown in silica gel in the presence and absence of barium chloride as additive

    A procedure for the growth of calcium sulphate dihydrate (gypsum) crystals, CaSO4 · 2H2O, by a gel technique in the presence of barium chloride as an additive as well as without the additive, is described. Optimu...

    P. Kumareson, S. Devanarayanan in Journal of Materials Science (1989)

  6. No Access

    Article

    Growth of progresterone crystals in silica gel and their characterization

    S. Narayana Kalkura, S. Devanarayanan in Journal of Materials Science Letters (1988)

  7. No Access

    Article

    Growth of cholesterol crystals in silica gel

    S. Narayana Kalkura, S. Devanarayanan in Journal of Materials Science Letters (1986)

  8. No Access

    Article

    Solar cycle and equatorial stratopause temperature

    Variations in a solar activity and their effect if any on the temperature of the stratopause are studied. Monthly mean stratopause temperatures during 1969–1976 and departures from the monthly mean value of ei...

    K Mohanakumar, S Devanarayanan in Proceedings of the Indian Academy of Scien… (1983)

  9. No Access

    Article

    Thermal expansion of ferroelectrics

    Using the interference method the thermal expansion of lithium hydrazinium sulphate [Li(N2H5)SO4] has been investigated in the temperature range −170° C. to +220° C. The principal expansion coefficients along the...

    S. Devanarayanan, K. R. K. Easwaran in Proceedings of the Indian Academy of Scien… (1966)