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Biomedical subjects

W Schulz

Publications and source records attributed to W Schulz.

At least 163 records · Page 9Linked to original sources
PubMed1976

[A new method for technical synthesis of tertiary and quaternary d,1-tropic acid esters of some N-subsituted nortropan- and granatan-3-oles (author's transl)].

A new technically feasible method for synthesizing atropine is described. This method can also be applied to N-substituted nortropan- and granatan-3-oles. The quaternization of these basic tropic acid ester yields new substances which have a pharmacological profile different from that of atropine. The stereoselectivity of the quanternization reaction is discussed.

Atropine↗
PubMed1975

[Cine-angiographic determination of ventricular volumes with the help of a computer (author's transl)].

A computerised method of determining ventricular volumes from cine-angiograms in two planes was developed. The heart is divided into a large number of sections by computer analysis, the volumes being obtained from the corresponding diameters in the two planes. Using a computer markedly facilitates calculations and the results are immediately available. Data for ventricular and stroke volumes agree well with those reported in the literature.

Cardiac Output↗
PubMed1975

Ascorbic acid changes in cultured rabbit lenses after microwave irradiation.

Whole body exposure of rabbits to microwave radiation causes a decrease in ascorbic acid in the lens. In our study, rabbit lenses maintained in culture medium (37 degrees C) were exposed to either pulsed or continuous wave S-band radiation for 10-15 min at power densities between 0 and 200 mW/cm-2. Total ascorbic acid was measured in selected lenses 1-3 days after irradiation. The temperature of the culture medium was measured during irradiation. Matched control lenses were exposed to similar time-temperature environments, but without microwave irradiation. Ascorbic acid decreased significantly in lenses exposed to microwave radiation. No differences were found, however, between irradiated and control lenses subjected to identical time-temperature conditions. At a given average power density, the time-temperature variation was independent of modulation. A decrease in ascorbic acid is apparently a direct thermal effect of microwave radiation in rabbit lens culture.

Animals↗