African swine fever virus (ASFV) is a member of a family of large nucleocytoplasmic DNA viruses that include poxviruses, iridoviruses, and phycodnaviruses. Previous ultrastructural studies of ASFV using chemical fixation and cryosectioning for electron microscopy (EM) have produced uncertainty over whether the inner viral envelope is composed of a single or double lipid bilayer. In this study w...

One important trend in recent years is the reduction of the silicon film thickness in SOI devices. As results of scaling this parameter several benefits have been obtained such as the elimination of the kink effect, the suppression of short-channel effects, improved subthreshold characteristics, the enhancement of carrier mobility, suppression of punchthrough and drain current overshoot and so ...

We report a case of anterior mediastinal abscess treated by percutaneous drainage under computed tomography (CT) guidance. The relationships of the abscess to the adjacent organs were clearly delineated by an intravenous injection of contrast material, and the drain was inserted between the sternum and the vasa thoracica interna. Selection of this route and the choice of a large-bore catheter (...

Perifoliculitis capitis abscedens et suffodiens, dissecting folliculitis, dissecting cellulitis, or Hoffman disease is a rare, inflammatory and chronic condition, which affects the scalp of young black men, mainly characterized by the appearance of nodules and abscesses that drain purulent material with fistulas and pathways, leading ultimately to scarring alopecia. At present, this condition i...

Continued miniaturization of bulk silicon CMOS transistors is being limited by degrading short channel effects. Traditionally, higher channel doping, shallower source/drain junctions, and thinner gate dielectrics have been employed to improve gate control and enhance performance as the gate length is scaled down. However, these techniques are rapidly approaching material and process limits. Alt...

We present a calculation of the sedimentation of grains in a giant gaseous protoplanet such as that resulting from a disk instability of the type envisioned by Boss (1998). Boss (1998) has suggested that such protoplanets would form cores through the settling of small grains. We have tested this suggestion by following the sedimentation of small silicate grains as the protoplanet contracts and ...

Professor Emeritus, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, UK, [email protected] In this issue, three papers discuss the issue of the brain drain: of psychiatrists from Egypt and Nigeria, and of nurses from East Africa. They explore the complexities of professional migration and its impact on the health of populations in source and recipient countries; they a...

INTRODUCTION In many facilities, drains are routinely inserted after thyroidectomy with the aim of preventing hematoma formation and accumulation of seroma. The continued use of drains may be based more on tradition rather than proven scientific evidence. OBJECTIVE To assess the benefit of drain use after thyroidectomy by determining; length of hospital stay, post operative pain and wound sep...