Observations on the food and feeding habits of the Ttorpedo trevally Megalaspis cordyla (Linnaeus) from Vizhinjam bay

A study of the food and feeding habits of Megalaspis cordyla based on an examination of 1692 specimens revealed that it is a pelagic carnivorous feeder, subsisting mainly on Stolephorus spp.; Leiogiiathus spp., Gazza &p., Carangoides spp., fish juveniles, fish larvae, alima larvae of Squilla spp., Acetes spp., amphipods, Squilla spp., Lucifer spp., megalopa larvae of crab, prawn juveniles, copepods, euphausids, pteropods, Sepia spp., and Nereis spp. were the other food items recorded. The intensity of feeding decreased with advancement of maturity. Feeding was observed to be comparatively higher during night than by day

Seed production technology for edible marine molluscs

One of the major constraints in the mariculture industry is the shortage of seed supply for the farming activities. This fact is applicable to molluscan farming also, because availablity of seed in the wild is severely restricted to few patches and to certain seasons in the natural beds which cannot meet the demand. The'refore need was felt to cllilance the seed supply e'ther by increasing effort for seed collection from the natural beds by identifying areas of abundance or production of seed by hatchery techniques

Logarithmic scaling in the near-dissipation range of turbulence

A logarithmic scaling for structure functions, in the form $S_p \sim [\ln (r/\eta)]^{\zeta_p}$, where $\eta$ is the Kolmogorov dissipation scale and $\zeta_p$ are the scaling exponents, is suggested for the statistical description of the near-dissipation range for which classical power-law scaling does not apply. From experimental data at moderate Reynolds numbers, it is shown that the logarithmic scaling, deduced from general considerations for the near-dissipation range, covers almost the entire range of scales (about two decades) of structure functions, for both velocity and passive scalar fields. This new scaling requires two empirical constants, just as the classical scaling does, and can be considered the basis for extended self-similarity

Derivative moments in turbulent shear flows

We propose a generalized perspective on the behavior of high-order derivative moments in turbulent shear flows by taking account of the roles of small-scale intermittency and mean shear, in addition to the Reynolds number. Two asymptotic regimes are discussed with respect to shear effects. By these means, some existing disagreements on the Reynolds number dependence of derivative moments can be explained. That odd-order moments of transverse velocity derivatives tend not vanish as expected from elementary scaling considerations does not necessarily imply that small-scale anisotropy persists at all Reynolds numbers.Comment: 11 pages, 7 Postscript figure

Hepatitis B Associated Monoclonal Gammopathy That Resolved after Successful Liver Transplant

Monoclonal gammopathy of undetermined significance (MGUS) has been most commonly associated with diseases like multiple myeloma, Waldenstrom's macroglobulinemia, primary systemic amyloidosis, HIV, and other lymphoproliferative disorders. There has been an isolated report of MGUS in patients coinfected with HIV and Hepatitis B, as the work by Amara et al. in 2006. Here, we report a case of IgA-kappa light chain gammopathy secondary to Hepatitis B infection, which resolved after liver transplantation. To our knowledge, this is the first reported case of M protein spike seen in the context of Hepatitis B infection only