Read e-book online Advances in Electromagnetic Fields in Living Systems: Volume PDF

By James C. Lin

This entire and topical quantity offers a few major advances on many fronts during this quarter of analysis, fairly emphasizing present and destiny biomedical purposes of electromagnetic fields.

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Read or Download Advances in Electromagnetic Fields in Living Systems: Volume 4 (Advances in Electromagnetic Fields in Living Systems) PDF

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Extra info for Advances in Electromagnetic Fields in Living Systems: Volume 4 (Advances in Electromagnetic Fields in Living Systems)

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Apart from increasing VOˆ , this modification provides another advantage. By means of the modulation, the spectral content of the signal shifts towards higher frequencies, thus escaping from the low-1/f noise of the preamplifier. 2) Using an additional positive feedback. e. the first slope of the flux voltage characteristic is increased while the second one is decreased. , 1999]. In biomagnetic applications, the output voltage of the flux-locked loop is digitized and processed further by a computer.

Haueisen, F. Gieszler and R. , VDE Verlag GMBH, Berlin, pp. 627–629. , Mansfield P. , 1995, Measurement of fetal liver, brain and placental volumes with echo-planar magnetic resonance imaging, Brit. J. Obstet. , 102:35–39. J. , 1995, An information-maximization approach to blind separation and blind deconvolution, Neural Computation, 7:1129–1159. , 2000, Neonatal long QT Syndrome and sudden cardiac death, Progress in Pediatr. , 11: 47– 54. A. W. , pp. 1703–1713. A. , 1989, Normal amniotic fluid changes throughout pregnancy, Am.

The latter noise stems from the SQUID as well as from the amplifiers and other electronic components in the SQUID read-out electronics. Before the digital signal is obtained for analysis, the signal is already processed to a certain extent. 01 Hz followed by an anti-aliasing filter is applied to the amplified signal. As each research team involved in fetal magnetocardiography has a different measuring system at their disposal that is located in different surroundings, the optimal signal processing will be different too.

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