Biomedical subjects

F Ortmann

Publications and source records attributed to F Ortmann.

3 recordsLinked to original sources

PubMed2005

Attracted by long-range electron correlation: adenine on graphite.

The adsorption of adenine on graphite is analyzed from first-principles calculations as a model case for the interaction between organic molecules and chemically inert surfaces. Within density-functional theory we find no chemical bonding due to ionic or covalent interactions, only a very weak attraction at distances beyond the equilibrium position due to the lowering of the kinetic energy of the valence electrons. Electron exchange and correlation effects are much more important for the stabilization of the adsystem. They are modeled by the local density or generalized gradient approximation supplemented by the London dispersion formula for the van der Waals interaction.

Journal Article↗

PubMed1980

[The psychodynamic illness concept in the romantic era - test case for the use of Kuhn's paradigm concept in human knowledge].

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History, 19th Century↗

PubMed1979

[Dietrich Geotg Kieser (1779-1862)--merely a romantic physician?].

As an adherent of Schelling Dietrich Georg Kieser (1779-1862) was an outstanding representative of the German medical romanticism. From 1812 to his death he was professor of medicine in Jena. Despite natural philosophical-speculative theories his general pathology contains dynamic views of the disease including psychosomatic opinions. The basis for this is the holism of man under the aspect of developmental history. Kieser did an eminent good work in the field of medical practice and organisation. He was the head of several clinics and from 1847 he was the first professor in Jena who only worked in the field of psychiatry. 1858 he was elected president of the Imperial Leopoldino-Carolinic German Academy of Scientists.

Botany↗