The d52 analog strength in 59Cu

Isobaric analog states of the strongest $\text{d}{}_{\mathrm{<mtext>5</mtext><mtext>2</mtext>}}$ parent states in ⁵⁹Ni were investigated in the reaction ⁵⁸Ni + p. Proton spectroscopic factors were derived whose sum was found to be in good agreement with the sum of the parent strengths. The absolute transition probability of the E1 γ-decay populating the ⁵⁹Cu ground state was estimated and compared with single-particle predictions.     

Optisches Drehungsvermögen und Konformation, 3. Mitt.: Über die Verhältnisse beicis-Ringschlußreaktionen epimerer Aminoalkohole der Ephedrinreihe

Zusammenfassung (–)-Norephedrin, (–)-Ephedrin d. h.d _g-erythro-1-Phenyl-2-amino-bzw.-methylamino-propanole und deren rechtsdrehendethreo-Diastereomeren wurden durch Phosgen bzw. Chloracetylchlorid in die entsprechenden Oxazolidon-(2)- und Morpholon-(5)-Derivate umgewandelt. Die 3,4-Dimethyl-2-phenyl-morpholone wurden danach mit LiAlH₄ zu Morpholinderivaten reduziert. Der Unterschied zwischen dem Drehwert eineserythro--Aminoalkohols und irgendeines seiner cyclischen Derivate ist jeweils größer als in derthreo-Reihe. Das kann auf die größere Gesamtänderung in der Konformationsasymmetrie bei den Umwandlungen dererythro-Isomeren zurückgeführt werden. An Hand derBrewster-Methode waren Aussagen nur über die bevorzugten Konformationen der genannten sechsgliedrigen cyclischen Verbindungen möglich.Mit 2 Abbildungen.Herrn Prof. Dr.F. Wessely freundlichst zum 70. Geburtstag gewidmet.     

Inclusive production of charged kaons in p+p collisions at 158 GeV/c beam momentum and a new evaluation of the energy dependence of kaon production up to collider energies

New data on the production of charged kaons in p+p interactions are presented. The data come from a sample of 4.8 million inelastic events obtained with the NA49 detector at the CERN SPS at 158 GeV/c beam momentum. The kaons are identified by energy loss in a large TPC tracking system. Inclusive invariant cross sections are obtained in intervals from 0 to 1.7 GeV/c in transverse momentum and from 0 to 0.5 in Feynman x. Using these data as a reference, a new evaluation of the energy dependence of kaon production, including neutral kaons, is conducted over a range from 3 GeV to $\mathrm{p}+\overline{\mathrm{p}}$ collider energies.     

Untersuchung der tribologischen Eigenschaften von Nutzfahrzeugmotoren unter besonderer Berücksichtigung der Luftfiltration

Es wurde eine unter Betriebsverhältnissen anwendbare Prüfmethode für die Bestimmung der Verschleβeigenschaften von Verbrennungsmotoren mit Hilfe der Gammaspektrometrie der neutronenaktivierten Verschleiβprodukte ausgearbeitet und die die Lebensdauer begrenzende Wirkung des abrasiven Verschleiβes festgestellt. Durch Verbesserung der Luftfilterung konnte die potentielle Lebensdauer der Motoren gut angenähert, und es konnten die Verunreinigung des Schmieröls vermindert und die Dauer der Ölwechselperiode verdoppelt werden.     

The benefits of training with vibration in stabilizers and postural human muscle strengthening

The mechanical vibrations have been perceived as unhealthy, although in some circunstances these may lead to a human body fortification. The trainings that use the vibrating stimulus have certain advantages to the classical trainings. Stabilizers and postural muscles are less visible, being hidden by large muscle groups and have little growth potential. For this reason most types of training does not focus on training and strengthening them. This article presents the advantages of training muscular groups of the vertebral column performed on vibrating plates. This type of training has the advantage that besides the requiring to all muscles in where the vibratory stimulus reaches, leads to an increase flexibility of joints. (© 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)     

Re-weighted random series path integral simulations of molecular clusters: Applications to lithium solvated by a mixed Stockmayer cluster

Nuclear quantum effects in finite temperature simulations of molecular clusters are determined by taking advantage of a recently developed method based on the Feynman Path Integral. The structural and thermodynamic properties, including the nuclear quantum effects are determined for three Stockmayer clusters. The ionic system contain a lithium ion solvated by six strong dipoles and 12 weaker ones. The presence of the ion in the mixed Stockmayer cluster drastically enhances the fluxional nature of the less polar components which occupy the second solvation layer, whereas the neutral counterpart has the effect of reducing it. The nuclear quantum effects are significant at room temperature and above for the solvated ionic system. These are attributable to two factors: (a) the lightness of the lithium ion and (b) the stiffness of the ion-dipole interactions. At 300 K, the difference between the fully converged quantum and the classical heat capacities is about 1.3 K_B for the ionic cluster. This difference is about 10 SDs obtained from 95% confidence estimates of the statistical fluctuations. Cubic convergence is confirmed for temperatures as low as 50 K by regression analysis. The nuclear quantum effects do not change the peak melting temperature of the cluster.     

Synthesis of 4-thiaharmalan analogue 4-aryl-1,3-thiazino[5,6-b]indole derivatives by prevention of rearrangements to position two of the indole moiety

An efficient and selective non-acidic protocol has been developed for the synthesis of derivatives of a new ring system: 4-aryl-1,3-thiazino[5,6-b]indole, a 4-thiaharmalan analogue. The convenient amidomethylation of indole-3-thiol (5) afforded 3-benzoylaminomethylthio-1H-indole (7a), with ortho-amidomethylated 2-benzoylamino-methyl-3-benzoylaminomethylthio-1H-indole (8) as side product. Following the Bischler-Napieralski reaction of 7a the rearranged 2-benzoylaminomethylthio-1H-indole 11 could be isolated. In order to prevent such rearrangements the target thiazinoindoles were prepared via 3-thiobenzoylaminomethylthioindole (13) via a modified Bischler-Napieralski reaction.