Existence of Killing submersions over a given simply connected surface M for a prescribed bundle curvature, [tau] [member of] [C.sup.[infinity]](M), has been proved in .
Particularizing the above construction one can get models for all Killing submersions over [R.sup.2], [H.sup.2](c) and the punctured sphere [S.sup.2.sub.*](c).
CPSC created Pool Safely: Simple Steps Save Lives, a national public education campaign to reduce childhood drowning, non-fatal submersions
and entrapments in public swimming pools and spas.
The majority of cases in the study, which looked at both fatal and non-fatal submersion events, involved children under 5 years of age (94 percent), involved males (56 percent), involved pools in the child's own yard (73 percent) and occurred during the summer months (81 percent).
In 18 percent of cases, a brief lapse in supervision, such as socializing with neighbours, answering the telephone and doing chores, was enough to allow a submersion event to occur.
Polymer-treated cubes held up well to subsequent submersions
in salt water, but untreated ones lost their strength and disintegrated, says Scherer.
Drowning is defined as a condition resulting in death due to complete submersion
or immersion in water.