One last point: In the past, recessions have led to bumps in grad school enrollment because staying in school looks preferable to jumping into a dicey job market.
Later in the century scientists and technicians started to look at the practical purposes for which fireworks might be employed, such as using rockets to help sailors establish their position at sea.
Based on the results of that study it has been estimated that the Swiss could avert 17 000 nosocomial infections each year if hospitals nationwide achieved comparable improvements.
"The project is unique in its scope," said Donat Agosti, a Swiss scientist and Cairo-based research associate at the American Museum of Natural History.
In the study, scientists used two groups of mice, one healthy and the other genetically modified to develop Alzheimer 's-like symptoms, including memory loss.