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Biomedical subjects

D W KUPKE

Publications and source records attributed to D W KUPKE.

12 recordsLinked to original sources
PubMed1963

Equilibrium sedimentation of uniform rods of tobacco mosaic virus.

Equilibrium was achieved in centrifugal fields with tobacco mosaic virus by the Beams magnetically suspended ultracentrifuge. An attempt was made to account for the earth's gravitational component by using tilted cells in the rotor. The determinations of particle weight on highly uniform rods of tobacco mosaic virus in the apparent absence of nonideal behavior gave a value of (41.6 +/- 0.1) 10(6).

Magnetics↗
PubMed1963

Chlorophyll a appearance in the dark in higher plants: analytical notes.

The increase in the ratio [chlorophyll a]/[chlorophyll b] which occurs in expanding bean leaves in the dark, is a result of chlorophyll a formation with a concomitant loss in chlorophyll b. The analytical methods for assay of these pigments were examined closely and found to be adequate for this purpose when proper safeguards are taken.

Chlorophyll↗