Most instances of exposure to blood-borne diseases come through sharing of dirty needles by drug users, or through sloppy medical practice, like the case last year in a Las Vegas endoscopy clinic where more than 80 hepatitis C cases were traced by federal investigators to poor hygiene and procedures.
Via Hebbian learning the shape and activation strengths of networks change over time, so that with more instances of exposure, and especially more multimodal exposure via action, concept learning may be strengthened.
The probable explanation is that, whereas manufacturing workers accumulated months or years of exposure in repeated shifts, servicemen spent only days or weeks in these experimental programmes and the number of instances of exposure was fewer.
For instance, coverage of exposure history by exposure measurement data and sufficiency of job histories were associated with the KL values.
Didier Louvat, a nuclear waste specialist with the International Atomic Energy Agency, or I.A.E.A., said the Mayapuri case was the most serious global instance of radiation exposure since 2006.
These individuals could differ from the majority of the study participants for instance regarding sources of exposure or metabolic capacity.
A particular challenge appears if variance components per se are the exposure variables of interest, for instance in studies of exposure variation [ 6, 7].
For instance, the normalization of exposure achieved with completer populations comes with a natural bias towards subjects who tolerated the treatment well and observed satisfactory efficacy to opt to continue with the treatment.
As tests confirmed more instances of anthrax exposure, the Bush administration today announced a huge expansion of its program to deal with the threat.
