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Light scattering by red blood cells in ektacytometry: Fraunhofer versus anomalous diffraction.

Applied optics

Streekstra GJ, Hoekstra AG, Nijhof EJ, Heethaar RM.
PMID: 20820378
Appl Opt. 1993 May 01;32(13):2266-72. doi: 10.1364/AO.32.002266.

In the present literature on ektacytometry, small angle light scattering by ellipsoidal red blood cells is commonly approximated by Fraunhofer diffraction. Calculations on a sphere with the size and relative refractive index of a red cell, however, show that...

Characteristics of the parallel-plate flow chamber for mechanical stimulation of bone cells under microgravity.

Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology

Bacabac RG, Smit TH, Heethaar RM, van Loon JJ, Pourquie MJ, Nieuwstadt FT, Klein-Nulend J.
PMID: 19180754
J Gravit Physiol. 2002 Jul;9(1):P181-2.

We show the use of a dimensionless parameter alpha h, in properly downscaling a parallel-plate flow chamber system for flow stimulation of bone cells under microgravity. The proper experimental regime for exposing cells to predictable levels of dynamic fluid...

Anomalous diffraction by arbitrarily oriented ellipsoids: applications in ektacytometry.

Applied optics

Streekstra GJ, Hoekstra AG, Heethaar RM.
PMID: 20941284
Appl Opt. 1994 Nov 01;33(31):7288-96. doi: 10.1364/AO.33.007288.

Anomalous diffraction by an arbitrarily oriented ellipsoid with three different axes is derived. From the resulting expression the relationship between the shape of the ellipsoid and the intensity pattern is immediately evident: The axial ratio of the elliptical isointensity...

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