The changing face of intussusception.

Management of intussusception in a pediatric center shows changing patterns over the past 26 years. Early and subacute cases of intussusception are now ordinarily successfully reduced by hydrostatic pressure (barium enema). A minority, who are in shock, who have evidence of significant blood loss or, in whom small intestinal obstruction is apparent, are treated by emergency laparotomy, with or without confirmatory contrast studies.

Cavity Formation in Thin Films of Viscous Liquids.

High-speed photography was utilized to observe the dynamic growth behavior of a cavity in a viscous liquid. From these observations it has been shown that a relatively elementary analytical approach will reproduce the general cavity growth characteristics.