A case of postoperative pulmonary artery catheterisation complicated by knotting of the catheter (Swan-Ganz) within the superior vena cava is described. The catheter was cut off at the skin entry site. The remainder, together with the knot, was pulled out through a purse string incision in the superior vena cava.

Small skin wounds in the chick embryo do not heal by lamellipodial crawling of cells at the wound edge as a skin wound does in the adult, but rather by contraction of an actin purse-string that rapidly assembles in the front row of epidermal cells (Martin, P., and J. Lewis. 1992. Nature (Lond.). 360:179-183). To observe the early time course of actin purse-string assembly and to characterize ot...

A key challenge in contemporary ecology and conservation is the accurate tracking of the spatial distribution of various human impacts, such as fishing. While coastal fisheries in national waters are closely monitored in some countries, existing maps of fishing effort elsewhere are fraught with uncertainty, especially in remote areas and the High Seas. Better understanding of the behavior of th...

In this paper we describe mechanisms for the management of secret keys, used in the securization of financial applications. The mechanisms Dynamic Key Handling and Reversed Dynamic Key Handling can be seen as particular methods to diversify keys in time, compatible with the present diversification by terminal and/or electronic purse.

The views and opinions expressed or implied in this article are those of the author (or authors) and do not necessarily reflect the position of the National Marine Fisheries Service, NOAA. Abstract—Most of the drifting fish aggregating devices (DFADs) used in industrial tropical tuna purseseine fisheries are equipped with satellite linked echosounder buoys, which provide fishing crews with remo...