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Pb levels in blood, liver, lung, kidney, heart and brain of male mice were measured after exposure to Pb as lead nitrate solution (0.1mg/mL)using flame atomic absorption spectrometry. The resultant data show that 98% of lead exposed in blood is accumulated in red blood cells. For other target organs, the accumulation of lead is in an order of kidney, liver, spleen, lung, brain and heart. The accumulation...
Higher-Order Spectral techniques perform well in non-Gaussian signal processing. In this paper, we propose a novel method for lung sounds feature extraction based on AR model bispectrum estimation. By the bispectral cross correlation analysis, select AR model orders and apply them to estimate the parametric bispectrum of the lung sound signals. Then extract bispectrum features of lung sound signals...
A new method for integration feature extraction of respiratory signals is presented in this paper. According to the characters of the non-stationary sounds, we subdivided the wavelet space in L2(R) based on the wavelet multiscale analysis theory. Advantages of this approach are made both in algorithm and recognition capability. The experimental results demonstrate that the proposed feature extraction...
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