Über nichtlineare Wellengleichungen mit zeitabhängigem Hauptteil

Ohne Zusammenfassung     

Strukurell neuartige 4-phenyl-benzopyran-2-one aus pityrogramma calomelanos (L.) link

From the fern Pityrogramma calomelanos a new Pigment has been isolated and structurally elucidated as a 8- or 6-dihydrocinnamoyl-5,7-dihydroxy-4-phenyl-2H-1-benzopyran-2-one mainly by spectroscopic methods and by comparison with the synthesized monomethyl derivative. From the same plant two other Phenyl-benzopyran-2-one-derivatives with an additional 2-phenyl-γ-pyron (ol)-ring system could be isolated.     

Rheologische Untersuchungen an Spinnlösungen

Zusammenfassung Zusammenfassend kann festgestellt werden, daß sich Unterschiede im Fließverhalten von Viskose- und Polyacrylnitrilspinnlösungen vor allem bei Anwendung kurzer Kapillaren zeigen, da unter diesen Bedingungen offenbar die für das technische Spinnverhalten wesentlichen und für beide Systeme unterschiedlichen viskoelastischen Eigenschaften das rheologische Gesamtverhalten maßgebend bestimmen. Es erscheint möglich, durch eine Kombination der hier beschriebenen rheologischen Meßmethodik mit einer mikrofotografischen Verfolgung der Aufweitung des ausfließenden Strahls zu detaillierten Aussagen hinsichtlich des Einflusses verschiedener chemischer Prozeßvariablen auf das technische Spinnverhalten zu gelangen.Vorgetragen auf der Jahrestagung der Deutschen Rheologen-Vereinigung und der Deutschen Rheologischen Gesellschaft in Bad Nauheim am 8. April 1965.     

The crystal structure of macrosalhine bromide

The chemically elucidated structure of Macrosalhine, an alkaloid of Alstonia macrophylla Wall., has been confirmed by X-ray analysis, the remaining relative stereochemical questions having been at the same time resolved.     

Potential pockets in the238U+238U system and their possible consequences

Within the double-folding model the separation, shape, and orientation dependence of the interaction potential is studied for two heavy ions. An effective nucleon-nucleon interaction (M3Y) derived fromG-matrix elements and based upon the Reid soft-core potential is used. Deformed Fermi-type matter densities with static quadrupole and hexadecapole deformations were utilized. The model is applied to the²³⁸U+²³⁸U system and shows dramatic dependence on the deformations and orientations.     

The computer as “an exercise and repetition” medium in mathematics lessons: Educational Effectiveness of Tablet PCs

The request of a new educational culture within the classroom goes hand in hand with the introduction of the new Educational Standards. That is they are essentially connected with a paradigm shift. The Project supports this aim via different tasks administered through Tablet PC's within the scope of exercise and repetition phase of learning. The central concern is to find appropriate lesson approaches through computer use in everyday life at school, which are conductive for the math learners and are at the same time easy to effectively implement in other classrooms. In the summer of 2004 the use of Tablet-PCs in school took place in two 9th classes of an Ostalbkreis secondary school in Baden-Württenberg. We report on the effectiveness of this new technology in the classroom.     

The effective QCD lagrangian at finite temperature

We evaluate the one-loop effective potential at finite temperature for QCD. High-temperature as well as low-temperature limits are investigated. We do not find a phase transition, i.e., the asymmetric Copenhagen ground state is maintained for any temperature.