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Displaying 1751 - 1775 of 2113

Dynamical Diffraction and X-Ray Standing Waves from Atomic Planes Normal in a Twofold Symmetry Axis of the Quasicrystal A1PdMn

April 1, 1999
Author(s)
Terrence J. Jach, Yanbao Zhang, R. Colella, M. De Boissieu, M. Boudard, A. I. Goldman, T Lograsso, D W. Delaney, S. Kycia
We have observed dynamical diffraction in the [024024] and[046046] reflections of the icosahedral quasicrystal A1PdMn in the back-reflection geometry (θ B = 90 ). The x-ray fluorescence from the Al and Pd atoms exhibits strong standing wave behavior

Vibrationally-Resolved Sum-Frequency Generation With Broad Bandwidth Infrared Pulses

October 15, 1998
Author(s)
Lee J. Richter, T Petralli-Mallow, John C. Stephenson
We present a novel procedure for vibrationally-resolved sum-frequency generation (SFG) in which a broad-bandwidth IR pulse is mixed with a narrow-bandwidth visible pulse. The resultant SFG spectrum is dispersed with a spectrograph and detected in parallel

Exploration of the Structural Environment of the Iron-Sulfur Cluster in Putidaredoxin by Nitrogen-15 NMR Spectroscopy of Selectively Labeled Cysteine Residues

August 28, 1998
Author(s)
Fahriye N. Sari, Marcia J. Holden, M P. Mayhew, V L. Vilker, B Coxon
Putidaredoxin is a di-iron protein whose paramagnetic region is not well characterized by 1H detected NMR. We have studied the structure of this region in greater detail by directly observed 15N NMR of oxidized and reduced putidaredoxin preparations in
Displaying 1751 - 1775 of 2113
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