Über die Wirkung des Rivanols bei septischen Krankheiten, wenn intravenös injiziert

Es ist praktisch erwiesen, dass das Rivanol als Tiefenantisepticum von günstiger Wirkung ist. In letzter Zeit wird es auch als intravenöse Injektion angewandt. Auch ich habe den therapeutischen Wert der intravenösen Injektion des Rivanols festgestellt. Ich habe diesen Injektionen 0.1% Losungen des Rivanols benützt und zwar gewöhnlich an einem Tage 50ccm und als gesammt Dosis eine Menge von 100-800ccm, durchschnittlich 275ccm. Zur Herabsenkung des Fiebers bedürfte es eines Zeitverlaufes von 3-8, durchschnittlich 5, 7 Tagen. Um die Blutinfektion negativ zu gestalten, bedarf es eines Zeitverlaufes von 4-18, durchschnittlich 8 Tagen. Ich habe weiterhin in Tierversuchen die Wirkungsweise des Rivanols bei septischen Krankheiten, wenn intravenös injiziert, festzustellen versucht. d. h. Ich habe bei Kaninchen Staphylokokkensepsis hervorgerufen und darauf die Veränderungen des Retikuloendothelial-Systems durch Rivanol-injektionen festgestellt. Aus meinen Untersuchungen scheint hervorzugehen, dass die intravöse Injektion von Rivanol bei septischen Krankheiten seine Wirkungsweise nicht indirekt durch eine Wirkung auf die körperschutzenden Organe, sondern vielmehr eine direkt bakteritide ist

Pressure Tuning of an Ionic Insulator into a Heavy Electron Metal: An Infrared Study of YbS

Optical conductivity [$\sigma(\omega)$] of YbS has been measured under pressure up to 20 GPa. Below 8 GPa, $\sigma(\omega)$ is low since YbS is an insulator with an energy gap between fully occupied 4$f$ state and unoccupied conduction ($c$) band. Above 8 GPa, however, $\sigma(\omega)$ increases dramatically, developing a Drude component due to heavy carriers and characteristic infrared peaks. It is shown that increasing pressure has caused an energy overlap and hybridization between the $c$ band and 4$f$ state, thus driving the initially ionic and insulating YbS into a correlated metal with heavy carriers

Optical Conductivity and Electronic Structure of CeRu4Sb12 under High Pressure

Optical conductivity [s(w)] of Ce-filled skutterudite CeRu4Sb12 has been measured at high pressure to 8 GPa and at low temperature, to probe the pressure evolution of its electronic structures. At ambient pressure, a mid-infrared peak at 0.1 eV was formed in s(w) at low temperature, and the spectral weight below 0.1 eV was strongly suppressed, due to a hybridization of the f electron and conduction electron states. With increasing external pressure, the mid-infrared peak shifts to higher energy, and the spectral weight below the peak was further depleted. The obtained spectral data are analyzed in comparison with band calculation result and other reported physical properties. It is shown that the electronic structure of CeRu4Sb12 becomes similar to that of a narrow-gap semiconductor under external pressure.Comment: 8 pages, 9 figure

Universal scaling in the dynamical conductivity of heavy fermion Ce and Yb compounds

Dynamical conductivity spectra s(w) have been measured for a diverse range of heavy-fermion (HF) Ce and Yb compounds. A characteristic excitation peak has been observed in the mid-infrared region of s(w) for all the compounds, and has been analyzed in terms of a simple model based on conduction (c)-f electron hybridized band. A universal scaling is found between the observed peak energies and the estimated c-f hybridization strengths of these HF compounds. This scaling demonstrates that the model of c-f hybridized band can generally and quantitatively describe the charge excitation spectra of a wide range of HF compounds.Comment: 5 pages, 1 table, 3 figures, to appear in J. Phys. Soc. Jpn. 76 (2007

Temperature-Dependence of Magnetically-Active Charge Excitations in Magnetite across the Verwey Transition

We have studied the electronic structure of bulk single crystals and epitaxial films of magnetite Fe$_3$O$_4$. Fe $2p$ core-level spectra show clear differences between hard x-ray (HAX-) and soft x-ray (SX-) photoemission spectroscopy (PES), indicative of surface effects. The bulk-sensitive spectra exhibit temperature ($T$)-dependent charge excitations across the Verwey transition at $T_V$=122 K, which is missing in the surface-sensitive spectra. An extended impurity Anderson model full-multiplet analysis reveals roles of the three distinct Fe-species (A-Fe$^{3+}$, B-Fe$^{2+}$, B-Fe$^{3+}$) below $T_V$ for the Fe $2p$ spectra, and its $T-$dependent evolution. The Fe $2p$ HAXPES spectra show a clear magnetic circular dichroism (MCD) in the metallic phase of magnetized 100-nm-thick films. The model calculations also reproduce the MCD and identify the magnetically distinct sites associated with the charge excitations. Valence band HAXPES shows finite density of states at $E_F$ for the polaronic metal with remnant order above $T_V$, and a clear gap formation below $T_V$. The results indicate that the Verwey transition is driven by changes in the strongly correlated and magnetically active B-Fe$^{2+}$ and B-Fe$^{3+}$ electronic states, consistent with resistivity and bulk-sensitive optical spectra.Comment: 5 pages, 4 figures Accepted in Physical Review Letter