We study the spatio-temporal dynamics of oscillatory photo-electrodissolution n-type Si in a fluoride-containing electrolyte under anodic potentials using in-situ ellipsometric imaging. When lowering illumination intensity step-wise, we successively observe uniform oscillations, modulated amplitude clusters, and coexistence multi-frequency clusters i.e., regions with different frequencies, stat...

BACKGROUND In patients with high cholesterol levels, lowering the cholesterol level reduces the risk of coronary events, but the effect of lowering cholesterol levels in the majority of patients with coronary disease, who have average levels, is less clear. METHODS In a double-blind trial lasting five years we administered either 40 mg of pravastatin per day or placebo to 4159 patients (3583 ...

Among mammals, echolocation in bats illustrates the vital role of proper audio-vocal feedback control particularly well. Bats adjust the temporal, spectral and intensity parameters of their echolocation calls depending on the characteristics of the returning echo signal. The mechanism of audio-vocal integration in both mammals and birds is, however, still largely unknown. Here, we present behav...

Each episode of fatty or sugary food consumption contributes to the pathophysiological alterations found in obesity. The present study estimated episodic frequency of energy-dense food (EDF) consumption in 348 adult women with excessive adiposity. Participants reported in open questions their habitual exercise and EDF consumption per week. Body fat percentage was measured using electric impedan...

Frequency analyses of the first heart sound (S1) were performed in 80 normal subjects and 80 postinfarction patients. A readily recognizable frequency pattern characterized by a quality of resonance greater than or equal to 2, as measured by the Q factor at 3 db down, was noted in 78 of the 80 apparently normal subjects. An aberrant pattern with a Q less than 2, often accompanied by a lowering ...