Almost all known structures are designed for low weight and high strength. For metal structures, especially aircrafts and underwater vehicles, this means reinforcement in the form of ribs. This paper presents an analytic model for the prediction of the acoustic scattered field from such rib-reinforced structures. The geometry is assumed to be that of an infinite elastic plate reinforced with a ...

Two hundred thirty four fungal strains were isolated by baiting method, for their feather degradation and keratinase producing ability. Fungi were tested on solid milk agar plates and in submerged culture. Maximum clearing zone was made by Chrysosporium indicum (7mm) on solid agar plates. The highest keratinase production was found in case of Acremonium strictum (74.40Unit/mL & 124.72 Unit/ml i...

The entomopathogenic fungus Beauveria bassiana produces at least three distinct single-cell propagules, aerial conidia, vegetative cells termed blastospores, and submerged conidia, which can be isolated from agar plates, from rich broth liquid cultures, and under nutrient limitation conditions in submerged cultures, respectively. Fluorescently labeled fungal cells were used to quantify the kine...

The existence of ®exural waves con­ ned to the free edge of a ®uid-loaded plate is established theoretically. Whereas analogous in vacuo edge waves exist for all parameter values, submerged plates are shown herein to support such waves only under very light ®uid-loading conditions. For example, thin plates of aluminium, brass or Plexiglas will not support edge waves in water, although edge wave...

THUS FAR, only three species of folliculinids have been recorded for Hawaii: Andrews ( 1944) assigned folliculinids from Kaena Point to Parafolliculina annulata [reassigned by Hadzi (1951) to Halofolliculina annulata (Andrews)]; and Matthews (1953) assigned folliculinids from Waimanalo Creek to Metafolliculina andrewsi Hadzi and those from the Hawaii Marine Laboratory to Lagotia simplex Dons. T...