Scleral cartilage biocalcium (SCBC) powder from skipjack tuna (Katsuwonus pelamis) eyeball scleral (STESC) was produced using hexane and isopropanol (1:1) for defatting, followed by protein removal alcalase at different concentrations (1.5–4.5%) various times (0–180 min). Calcined (CSC) also prepared characterized. The lowest fat remaining in STESC attained after 6 cycles of defatting (P < 0.05...

We consider a range of attacks on reduced-round variants of the block cipher Skipjack. In particular we concentrate on the role of truncated differentials and consider what insight they give us into the design and long-term security of Skipjack. An attack on the full 32 rounds of Skipjack remains elusive. However we give attacks on the first 16 rounds of Skipjack that can efficiently recover th...

Large-scale, no-take marine protected areas (MPAs) have been established in several locations the Pacific and expansion of such to reach 30% ocean area is actively promoted some quarters. Justification for establishment large oceanic MPAs often includes conservation benefits that they would bring tuna stocks, which are subject important commercial fisheries Pacific. The aim this paper was evalu...

Foreword SEAPODYM is a model developed initially for investigating spatial tuna population dynamics, under the influence of both fishing and environmental effects. The model development also benefited of a grant from the PFRP (Pelagic Fisheries Research Program) of the University of Hawaii, allowing the implementation of irregular grids and initiating the work for parameter optimization (2004-0...