Showing papers by "David S. Cannell published in 1980"

Correlation range and Rayleigh linewidth of xenon near the critical point

Abstract: Accurate measurements are reported of both the correlation range and the Rayleigh linewidth of xenon near its critical point. The linewidth data agree quite well with the mode-mode coupling results, and disagree with renormalization-group dynamics calculations.

Techniques for Light Scattering from Hemoglobin

Abstract: This paper describes methods we have found sufficient to obtain accurate diffusion coefficient measurements of hemoblobin using quasi-elastic light scattering. The same methods should be applicable to other proteins or liquid samples which absorb at the laser wavelength. The results are precise enough to detect a change of approximately 0.5% in the diffusion coefficient of hemoglobin upon oxygenation.

Use of nonlinear least mean squares fitting to achieve compensated electrical filters

Abstract: The results of using nonlinear least‐mean‐squares fitting procedures to compensate passive electrical filters for the effects of frequency‐dependent losses in the inductors by changes in the other components are reported. This technique, when applied to third‐ and fifth‐order low‐pass Chebysheff filters, resulted in actual transfer functions which were essentially identical to the ideal transfer functions. Filters having cutoff frequencies ranging from 300 Hz to 3 MHz were constructed and tested.