Now showing items 91-95 of 95
Regulating Gene Expression Through DNA Mechanics: Tightly Looped DNA Represses Transcription.
(2010)
It is now widely accepted that the mechanical state of DNA can play a major role in regulating the activity of RNA polymerase (RNAP). Not only have the global levels of supercoiling been shown to regulate transcription, ...
Two-Dimensional Electronic Spectroscopy of the Photosystem II D1D2-cyt.b559 Reaction Center Complex.
(2010)
Two-dimensional electronic spectroscopy (2DES) is a powerful new technique for examining the electronic and vibronic couplings and dynamics of chemical, semiconductor, and biological samples. We present several technical ...
Measurement of the Inclusive Forward-Backward tt Production Asymmetry and its Rapidity Dependence dAfb/d(y).
(2010)
Early measurements of a large forward-background asymmetry at the CDF and D0 experiments at Fermilab have generated much recent interest, but were hampered by large uncertainties. We present here a new measurement of the ...
Simple Processes in Complex Places.
(2010)
Identical stochastic processes in different topologies can exhibit qualitatively distinct behavior. In complex environments, such as social or neuronal networks, rich structural details can lead to very different outcomes ...
Plume-Surface Interactions due to Spacecraft Landings and The Discovery of Water on Mars.
(2010)
Pulsed supersonic jets or rocket plumes have different surface flow physics than steady jets, in particular in tenuous atmospheres such as that of Mars where jets are collimated over large distances compared to their ...