The impact of avian predation on a declining population of the spruce budworm, (Clem.), was measured using single-tree exclosure cages in a mature stand of balsam fir, (L.), and white spruce, (Moench.
View Article and Find Full Text PDFAims: Imaging faults with ultrasound transducers are common. Failed elements on linear and curvilinear array transducers can usually be detected with a simple image uniformity or 'paperclip' test. However, this method is less effective for phased array transducers, commonly used in cardiac imaging.
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