We examined bird-habitat relationships within and across a range of aspen habitats in four major watersheds in the eastern Sierra Nevada mountains of California and Nevada to identify habitat features of importance to aspen-breeding birds. Using point counts and vegetation assessments from 462 individual stations between 2001 and 2003 allowed us to… (More)
A commercially available open MRI unit is under routine use for radiation therapy simulation. The effects of a gradient distortion correction (GDC) program used to post process the images were assessed by comparison with the known geometry of a phantom. The GDC reduced the magnitude of the distortions at the periphery of the axial images from 12 mm to 2 mm… (More)
A 16:1 analog multiplexer has been designed, manufactured, and characterized for radiation effects and lifetime operation. The device is SEL immune, hardened to 300 krad(Si) TID, and SEU immune up to 62.3 MeV-cm^2/mg. The TID, SEE and lifetime operation performance is reported.
INTRODUCTION Shape memory polymers (SMPs) are smart materials capable of " remembering " and autonomously recovering their original shape after being deformed, as a response to a stimulus [1,2]. Segmented polyurethanes (PU) that present a two-phase microstructure consisting on hard and soft segments, can show this type of behavior.