Zur Bestimmung von Blaus?ure in ?pfeln

Ohne Zusammenfassung     

Organische S?uren, S?ureanhydride, Acylhalogenide, starke anorganische S?uren und reaktive Alkylhalogenide

Ohne Zusammenfassung     

Search for high-spin isomeric states in the rare-earth region

Several new high-spin (I>10) isomeric states in the mass region A=144–164 are located in a systematic search with ¹²C induced reactions, employing a sixteen NaI (Tl)Ge(Li) detector multiplicity filter. The proximity to the N=82 neutron shell closure strongly suggests that shell effects contribute significantly to this isomerism.     

Papier-chromatographische Trennung und Bestimmung von 1-Aminoanthrachinon- und 1-Amino-4-bromanthrachinon-2-sulfons?ure

Ohne Zusammenfassung

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Separation and determination of 1-Aminoanthraquinone- and 1-Amino-4-bromoanthraquinone-2-sulphonic acid by paper chromatography

     

Dreikörperkräfte und die Stabilität einfacher Kristallgitter

Observed stability of crystal structures for rare-gas atoms, alkali halides and for those II–VI and III–V compounds whose ions are isoelectronic with rare-gas atoms is correlated with atomic and ionic interactions in dense media. On the basis of central forces essential discrepancies between theory and experiment occur. Further analysis indicates that strong, simultaneous interactions of exchange type between three atoms or three ions play an important role in determining the stable crystal structure. An evaluation of such three-body interactions is carried out in first and second orders of perturbation theory, using effective-electron wave functions of Gaussian form. It is shown that the theory accounts for all observed stability relations on a quantitative basis. The stability of the face-centered cubic configuration for solids of heavy rare gases is explained. Also, the occurrence of the cesium chloride structure for some of the heavy alkali halides and the magnitude of observed transition pressures are reproduced by the theory. In addition, it is shown that three-ion interactions are responsable for the occurrence of the sphalerite (zincblende) and wurtzite configurations with II–VI and III–V compounds, without covalent bonding between the ions being involved. General laws are given which govern the relative stability of the sodium chloride, cesium chloride, sphalerite and wurtzite configurations for these types of compounds.     

Zur Bestimmung des Wassergehaltes in ?l, Fett und Zucker enthaltenden Produkten

Ohne Zusammenfassung     

Die Anwendung der Formoltitration auf die Eiwei?bestimmung

Ohne Zusammenfassung     

Exchange narrowing of the dipolar fields in EuX (X = O,S, Se,Te, B6) from ESR at 70 GHz

The exchange narrowed ESR linewidth is expected to become frequency dependent if the resonance frequency and the reciprocal correlation time of the local dipolar fields are in the same order of magnitude. We report on a corresponding ESR linewidth investigation of the four Eu-monochalcogenides and of EuB₆ which were performed up to 70 GHz.