One of the primary flaws with current digital signature technology is that a digital signature does not “feel” or resemble a traditional seal or personal signature to the human observer; lacking a sense of visualisation and changing each time it is applied. This paper reviews the historical value of seals in Eastern and Western cultures to provide a basis to enhance global acceptability of exis...

OBJECTIVE The aim of this study was to the determine impact of severe esophageal anastomotic leak (SEAL) upon long-term survival and locoregional cancer recurrence. BACKGROUND The impact of SEAL upon long-term survival after esophageal resection remains inconclusive with a number of studies demonstrating conflicting results. METHODS A multicenter database for the surgical treatment of esoph...

OBJECTIVES To evaluate in vitro the effect of cavity preparation with microburs and diamond-coated ultrasonic tips on the microleakage and marginal fit of six end-root filling materials. STUDY DESIGN. The following materials were assessed: amalgam (Amalcap), zinc oxide eugenol (IRM), glass ionomer (Vitrebond), compomer (Cavalite), mineral particle aggregate (MTA) and composite (Clearfil). Cavit...

Freeze-fracture of rapidly frozen, untreated plant cells reveals terminal complexes on E-fracture faces and intramembrane particle rosettes on P-fracture faces. Terminal complexes and rosettes are associated with the ends of individual microfibril impressions on the plasma membrane. In addition, terminal complexes and rosettes are associated with the impressions of new orientations of microfibr...