Cycling:
This weekend my husband and I will be traveling down to St. George so I can ride in the Tour of St. George. I wanted to do the 65 mile ride, but after struggling up a not-really-steep hill for 1/4 mile, I've decided that the 30 mile route might suite me better at this point.
Last week I rode a total of 20 miles. At one point my heart rate hit 240, so I need to give myself more time to acclimate.
Research:
This week there was a very interesting seminar on biosensors. The sensor is a partially bound double DNA helix attached to a gold electrode that has a fluorophore bleacher associated with it. One strand, B, of the DNA has a fluorescent end that, while bound in the double helix, is held away from the bleacher. Strand A of the DNA has a strong affinity for the target of the sensor. When the target is present, the double helix unbinds so that strand A can bind to the target. Strand B then falls into close contact with the bleacher so that target presence can be 'seen' by the absense of emitted electrons. See this page: http://www.chem.ucsb.edu/people/faculty/plaxco/index.shtml for more information.
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