1.  Although most of the Smithsonian's storage facilities are off limits to tourists, they are heavily used by researchers.

2.  Duke researchers used intercessory prayer, off-site sessions provided by seven prayer groups of various denominations around the world.

3.  Earlier researchers had used substances like iodine and phosphorus as radioactive tracers.

4.  Federally supported researchers cannot use either until the guidelines are approved.

5.  For one, researchers used "back testing," which starts at a given date and analyzes performance in comparison with market averages for a previous time period.

6.  For the demonstration, researchers used a special high-bandwidth line to connect to servers in Virginia.

7.  For their simulations of the death throes of massive stars, the researchers used powerful computers capable of running millions of calculations a second.

8.  For their measurements, which have an uncertainty of about .0015 percent, the University of Washington researchers used an improved version of a torsion balance.

9.  Harvard researchers used this quiz to rank anger levels of 1,300 people in a study of temper and heart risks.

10.  He says it is quite common for academic researchers to use graduate business students as laboratory rats.