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C Scheven

Publications and source records attributed to C Scheven.

4 recordsLinked to original sources
PubMed1978

[Measurements of storage-induced morphologic changes in preserved blood by means of light scattering].

This study is concerned with changes in diffuse backscattering of white light caused by laminarly streaming or resting banked blood stored for periods up to 7 weeks. The most pronounced changes, i.e. a steep rise of scattering intensity, were found at the beginning of storage. Under streaming conditions such as resulting in a maximum of backscattering and effective disaggregation of rouleaux the temporal changes of scattering intensity obviously were not simply related to morphological properties of the blood. In addition, there was considerable individual variation in the amount of backscattering from various preserves. This invalidates an assessment of banked blood by means of light scattering by a single-data type measurement.

Blood Preservation↗
PubMed1976

[The correlation of human erythrocyte shape with dark-field light scattering intensity].

This study was concerned with the quantitative evaluation of dark field light scattering by sedimented erythrocytes of banked human blood samples. Due to considerable variability of both appearance and amount of scattered light the discocyte group had to be subdivided into discocyte I and discocyte II. The mean intensity of scattered light increased about three fold from discocyte II to echinocytes I, II, III, sphaeroechinocyte, and sphaerocyte. On the other hand the average light scattering intensity of discocytes I exceeded that of discocytes II about 2.5 times, with individual data varying over a wide range. There was a rapid disappearing of discocytes I correlated with time of storage. Therefore it is concluded that discocytes I represent the initial stage of erythrocytes transforming under banking conditions.

Blood Preservation↗