We present a systematic and quantitative model of huddling penguins.In this mathematical model, each individual penguin in the huddle seeks only to reduce its own heat loss.Consequently, penguins on the boundary of the huddle that are most exposed to the wind Toy move downwind to more sheltered locations along the boundary.In contrast, penguins in
As the risk of porcine endogenous retrovirus (PERV) infection is a major obstacle to the xenotransplantation of porcine tissue, we investigated whether an AN69 hollow fibre membrane, used for AC Drive Motor islets of Langerhans transplantation, could prevent the transfer of PERVs and thus reduce the risk of PERV infection.PK15 cells were used as a
A new chaotic map based IP (Intellectual Property) watermarking scheme at physical design level is presented.An encrypted watermark is embedded into the physical layout of a circuit by configuring LUT Polos (Lookup Table) as specific functions when it is placed and routed onto the FPGA (Field-Programmable Gate Array).The main contribution is the us
Background: Non-intestinal adenocarcinomas of the sinonasal tract are uncommon neoplasms in adults, and particularly rare in the paediatric population.Case presentation: A 10-year-old male presented to the Paediatric Otolaryngology clinic with symptoms of recurrent epistaxis, persistent clear nasal discharge, and a left-sided polypoidal swelling ca