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In recent years, there has been a growing interest in the perception of complex sounds, and a growing interest in models that attempt to explain our perception of these sounds in terms of peripheral processes involving the interaction of neighbouring frequency bands and/or more central processes involving the combination of information across distant(More)
[1] Observations of fresh impact craters by the Opportunity rover and in high‐resolution orbital images constrain the latest phase of granule ripple migration at Meridiani Planum to have occurred between ∼50 ka and ∼200 ka. Opportunity explored the fresh Resolution crater cluster and Concepción crater that are superposed on and thus younger than the(More)
The microstructure and location of impurities in polar ice are of great relevance to ice core studies. We describe a reliable method to examine ice in the scanning electron microscope (SEM). Specimens were cut in a cold room and could have their surfaces altered by sublimation either before (pre-etching) or after (etching) introduction to the cryo-chamber(More)
On 26 May 2003, intense rainfall from a series of thunderstorms in eastern North Carolina caused flooding that eventually destroyed the concrete dam in Hope Mills, draining Hope Mills Lake, and revealing a formerly submerged and buried structure that was identified as a timber crib dam. Inspection revealed these logs to be old-growth longleaf pines, which(More)
Pasteurisation of potato tubers by immersion in hot water is being examined as a method of blackleg control. Studies on the in vitro heat resistance of representative pectolytic erwinia have enabled prediction curves for the selection of suitable times and temperatures of pasteurisation to be prepared. High levels of contamination on some tubers may require(More)
A Most Probable Number Technique based on the use of carbohydrate-free McConkey broth and crystal violet pectate agar for the quantification of tuber-borne pectolytic erwinia has been developed. The population of the organisms on naturally contaminated tubers has been shown to be log-normally distributed. The possibility of using tuber contamination and(More)
One tonne boxes of seed potatoes cv. Désirée contaminated withErwinia carotovora were held in four different types of farm stores. In general, contamination fell rapidly immediately after harvest and rose later in the storage season. The extent of these changes varied considerably with store type. The greatest reduction was from a log count of 5.5 to 2.1(More)
The SuperNova / Acceleration Probe (SNAP) is a space-based experiment to measure the expansion history of the Universe and study both its dark energy and the dark matter. The experiment is motivated by the startling discovery that the expansion of the Universe is accelerating. A 0.7 square-degree imager comprised of 36 large format fully-depleted n-type(More)
The SuperNova/Acceleration Probe (SNAP) will measure precisely the cosmological expansion history over both the acceleration and deceleration epochs and thereby constrain the nature of the dark energy that dominates our universe today. The SNAP focal plane contains equal areas of optical CCDs and NIR sensors and an integral field spectrograph. Having over(More)