Download Electromagnetic Fields in Biological Systems by James C. Lin PDF

By James C. Lin

As instant know-how turns into extra subtle and obtainable to extra clients, the interactions of electromagnetic fields with organic structures have captured the curiosity not just of the clinical group but additionally most of the people. accidental or deleterious organic results of electromagnetic fields and radiation may possibly point out grounds for overall healthiness and defense precautions of their use. Spanning static fields to terahertz waves, Electromagnetic Fields in organic platforms explores the variety of effects those fields have at the human physique. With contributions via an array of specialists, subject matters mentioned comprise: crucial interactions and box coupling phenomena, highlighting their value in study on organic results and in medical, business, and clinical functions electrical box interactions in cells, concentrating on ultrashort, pulsed high-intensity fields The impression of publicity to obviously taking place and human-made static, low-frequency, and pulsed magnetic fields in organic structures Dosimetry or coupling of super low frequency (ELF) fields into organic platforms and the historic advancements and up to date traits in numerical dosimetry cellular conversation units and the dosimetry or coupling of radiofrequency (RF) radiation into the human physique publicity and dosimetry linked to magnetic resonance imaging (MRI) and spectroscopy on hand information at the interplay of terahertz radiation with organic tissues, cells, organelles, and molecules there's nice power for verbal exchange, business, clinical, and scientific use of electromagnetic fields and radiation. to aid develop wisdom of the organic results of such fields and to take advantage of their capability scientific functions, this publication highlights serious concerns with regards to their results on dwelling structures.

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Bioelectromagnetics 1:117–29. 9 Extremely-low-frequency electric field distribution measured at the body surface of a human body subject standing under an electric power transmission line: E 0 is the electric field strength in air. , H. Endo, and G. Matsumoto. 1988. Visualization of electric fields around a biological body. ) human subject standing in an ELF field produced under a ­high-voltage transmission line. 8. For example, in the case of humans, a current is induced to flow in the vertical direction.

8 Current density through selected axial cross sections of human, swine, and murine bodies exposed to a vertical 60 Hz 10-kV/m electric field: Relative body sizes are not to scale. Average axial current densities are estimated values over each cross section. Current densities perpendicular to the surface of the bodies shown for man and pig are from calculations. Surface electric fields are measured values for man and pig, whereas those for rats are estimated. (From Kaune, W. , and R. D. Phillips.

24, that is, E = (ωrμ/2)H. The magnetic field produces an electric field inside that varies directly with distance away from the center and in proportion to the frequency and the applied uniform magnetic fields. 7). 42 to estimate induced fields inside a body (animals, humans, or tissue preparations), any significant deviations from homogeneity or circular cylindrical symmetry must be taken into account. 42 should be applied to each region inside the body with a different conductivity, which behaves as a unit with its own body center and radius or an equivalent radius.

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