A barrier (seal) must form at the cut ends of a severed axon if a neuron is to survive and eventually regenerate. Following severance of crayfish medial giant axons in physiological saline, vesicles accumulate at the cut end and form a barrier (seal) to ion and dye diffusion. In contrast, squid giant axons do not seal, even though injury-induced vesicles form after axonal transection and accumu...

This study compared intracuff pressure (ICP) during mechanical ventilation in a variety of currently used endotracheal (ET) and tracheostomy (trach) tube cuffs and related cuff physical characteristics. Tracheostomy tube physical characteristics were also measured. Variation was observed to exist between "just-seal" inspiratory and end-expiratory intracuff pressure during mechanical ventilation...

I had come to see the gray seals (Halichoerus grypus; Figure 1) that live along coast of Pembrokeshire in far west Wales, and was not disappointed. A wild, windblown seascape with steep cliffs, small islands, coves inaccessible by land, it is home dolphins, porpoises, an extensive cast seabirds, some 5000 seals. Tiny stone cottages belonged people who made a living long ago taking rowboats onto...

SEAL was rst introduced in 1] by Rogaway and Copper-smith as a fast software-oriented encryption algorithm. It is a pseu-dorandom function which stretches a short index into a much longer pseudorandom string under control of a secret key pre-processed into internal tables. In this paper we rst describe an attack of a simpliied version of SEAL, which provides large parts of the secret tables fro...

SEAL was first introduced in [1] by Rogaway and Coppersmith as a fast software-oriented encryption algorithm. It is a pseudorandom function which stretches a short index into a much longer pseudorandom string under control of a secret key pre-processed into internal tables. In this paper we first describe an attack of a simplified version of SEAL, which provides large parts of the secret tables...

One primary objective of endodontic therapy is to establish an adequate seal with the root canal filling material. The placement of an immediate amalgam buildup at obturation, in conjunction with rubber dam isolation, allows an endodontic seal to be extended from the foramen to the cavosurface margin. As a result of this immediate buildup, the length of the seal and the longevity of the endodon...