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Domoic acid (DA) is a naturally occurring neurotoxin known to harm marine animals. DA-producing algal blooms are increasing in size and frequency. Although chronic exposure is known to produce brain lesions, the influence of DA toxicosis on behavior in wild animals is unknown. We showed, in a large sample of wild sea lions, that spatial memory deficits are(More)
Twenty-five patients with gross residual chordoma after partial excision or biopsy were treated by radical radiotherapy at Royal Marsden Hospital between 1952 and 1981. The median duration of freedom from local progression following radiotherapy was 32 months. Twenty-four of the 25 patients (96%) had stabilization or reduction in symptoms. All 19 patients(More)
The ongoing digitization of the industrial-scale machines that power and enable human activity is itself a major global transformation. But the real revolution-in efficiencies, in improved and saved lives-will happen as machine learning automation and insights are properly coupled to the complex systems of industrial data. Leveraging a systems view of(More)
Most ultrasonic tools for the inspection of pipelines or bore-holes consist of a transducer, separated from the exterior by an acoustic window. This acoustic window protects the device from the potentially hostile exterior and is part of the mechanical construction. Therefore the acoustic window is positioned between the transducer and the region of(More)
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