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The complex permittivity (epsilon = epsilon - jepsilon) of an (0.5 M) aqueous solution of DL-alpha-valine was measured at microwave frequencies over the temperature range 0.3 - 40 degrees C. The magnitude and relaxation time of the dispersions were determined, and the results interpreted in terms of the molecular structure of the valine molecule in solution. The peak in the dielectric loss due to the relaxation of the valine molecules occurs at approximately 2.6 GHz at 37 degrees C.
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