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Browsing Volume 07 October 1998 by Title

Browsing Volume 07 October 1998 by Title

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  • Trophic Status of Beira Lake 
    Nahallage, Charmalie; Piyasiri, Swarna (1998)
    Beira Lake is located in the heart of the city of Colombo.and in an highly urbanized catchment of 432 ha. Beira Lake covers 65.4 ha and comprises four main basins the East Lake, the Galle Face Lake, the West Lake and the ...
  • Vibrational Modes of a Rabana (Drum) 
    Wijeratne, Agra T.; Peiris, M.G.C.; Dharmapriya, G.G. (1998)
    The vibrational modes of a "Virindu" Rabana membrane (of diameter 13 inches), which was driven by a loudspeaker, were studied by using a microphone.The vibrational modes were observed at frequencies below 500Hz. The nodal ...

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