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  • 11
    Electronic Resource
    Electronic Resource
    The effect of CVVHD and endotoxin on the oxidative burst, adhesion molecules and distribution in tissues of granulocytes (2000)
    Springer
    Intensive care medicine 26 (2000), S. 770-775 
    Details
    ISSN: 1432-1238
    Keywords: Key words Adhesion molecules ; CVVHD ; Endotoxin ; Granulocytes ; Oxidative burst
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: Extracorporeal circulation, such as cardiopulmonary bypass and haemodialysis, has been associated with an activation of the immune system, especially the granulocytes. Continuous veno-venous haemodiafiltration (CVVHD) is used in critically ill septic patients. During CVVHD cytokines are excreted in the ultrafiltrate. But when the membranes used in CVVHD are cultured with granulocytes, the granulocytes are slightly activated. This effect is potentiated by endotoxin. We therefore, in vivo, compared the effect on granulocyte activation of CVVHD with an endotoxin group and a control group.¶Methods: Thirty-one pigs were anaesthetized and mechanically ventilated. In ten pigs CVVHD was performed. Eleven pigs received an infusion of Escherichia coli endotoxin 30 μ/kg–1 and ten pigs served as a control group. The adhesion molecules CD18 and CD62L were measured using monoclonal antibodies. The oxidative burst activity was assayed as superoxide dismutase-inhibitory reduction of cytochrome c. The number of granulocytes in peripheral blood and in the lungs and liver were counted.¶Results: The infusion of endotoxin was followed by granulocytopenia, reduced oxidative burst activity, increased expression of CD18 and decreased expression of CD62L on granulocytes. Accumulation of granulocytes in liver and lung tissue was also noted in this group. CVVHD was only associated with a non-significant decrease in CD62L expression on granulocytes. It did not affect any of the other measured immunological parameters.¶Conclusion: In contrast to endotoxin-induced sepsis, the granulocytes were not activated during CVVHD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340051245
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  • 12
    Electronic Resource
    Electronic Resource
    Spatial and temporal patterns of predation on seeds of the surfgrass Phyllospadix torreyi (2000)
    Springer
    Marine biology 136 (2000), S. 739-747 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Spatial and temporal patterns of predation on seeds of the seagrass Phyllospadix torreyi S. Watson were quantified at four sites near Santa Barbara, California, USA. Over a period of four flowering seasons during 1995 to 1998, monthly patterns of seed fall and intensity of seed predation were similar among sites, but were temporally quite variable. Abundance of dispersed seeds varied greatly both among seasons and years. Within any one year, seeds were present in the environment every month, but they peaked in abundance during the fall months following the annual flowering period. Seeds were more abundant during the earlier years of the study. The intensity of predation steadily increased throughout the study period, from a low of ≤10% seeds consumed during 1995 to ∼50% consumption by 1997, and it was not correlated with abundance of seeds in the environment. Pre-dispersal seed loss also was estimated in two flowering seasons by counting the numbers of seeds consumed prior to release from the plant, and was relatively low (〈15%). No differences were detected among the four study sites in patterns of pre-dispersal loss. Field surveys were done at two sites to identify potential seed predators. Three of the most abundant species identified in these surveys were tested in the laboratory to determine size-specific patterns of feeding activity and to assess which early life stages of P. torreyi (fruits within spadices, dehisced fruits, seedlings) were most vulnerable to predation. All three of the early life stages were consumed. The crabs Pugettiaproducta (Randall) and Pachygrapsus crassipes Randall were much more voracious predators than the isopod Idotea resecata Stimpson.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050733
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  • 13
    Electronic Resource
    Electronic Resource
    Über einige ungewöhnliche Allergieformen und Allergenanlässe (1941)
    Springer
    Medical microbiology and immunology 123 (1941), S. 486-493 
    Details
    ISSN: 1432-1831
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Es wurde versucht, durch einige genau analysierte Beispiele hinzuweisen: 1. auf die krankmachende Bedeutung einiger Arzneimittelantigene, die sonst im allgemeinen gut vertragen werden und darum als „unschädlich” gelten, 2. auf die Bedeutung der „Herdreaktion” bei den allergischen Erkrankungen, d. h. auf die Tatsache, daß bei oberflächlichem Antigenkontakt neben der Kontaktstelle selbst („örtliche Reaktion”) oft auch das fernabgelegene, individuellprädisponierte allergische Reaktionsorgan spezifisch anspricht („Herdreaktion”).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02177946
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  • 14
    Electronic Resource
    Electronic Resource
    Radiative cooling of fullerene anions in a storage ring (2001)
    Springer
    The European physical journal 17 (2001), S. 189-204 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 36.40.-c Atomic and molecular clusters – 36.40.Cg Electronic and magnetic properties of clusters – 36.40.Qv Stability and fragmentation of clusters – 36.40.Wa Charged clusters – 39.10.+j Atomic and molecular beam sources and techniques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Thermionic emission from hot fullerene anions, CN -, has been measured in an electrostatic storage ring for even N values from 36 to 96. The decay is quenched by radiative cooling and hence the observations give information on the intensity of thermal radiation from fullerenes. The experiments are analysed by comparison with a simulation which includes the quantisation of photon energy and the statistics of emission. Experiments with heating of the molecules with a laser beam confirm the interpretation of the observations in terms of radiative cooling and give an independent estimate of the cooling rate for C60 -. The measured cooling rates agree in general within a factor of two with the prediction from a classical dielectric model of a thermal radiation intensity of ∼ 300 eV/s for C60 at 1 400 K, scaling approximately with the 6th power of the temperature and with the number of atoms in the molecule.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170022
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  • 15
    Electronic Resource
    Electronic Resource
    Dimer dissociation energies of small odd-size clusters (2002)
    Springer
    The European physical journal 21 (2002), S. 163-166 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 36.40.Qv Stability and fragmentation of clusters – 36.40.Wa Charged clusters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The dimer dissociation energies of gold cluster ions Au + n , n = 9, 11, 13, 15 have been determined with an extension of a recently developed model-independent method. Monomer-dimer decay pathway branching ratios provide the energy dependent process which is needed in this method. The measured values are D 2 ( Au + 9 ) = 3.66(8)(9) eV, D 2 ( Au + 11 ) = 4.27(11)(8) eV, D 2 ( Au + 13 ) = 4.50(9)(7) eV and D 2 ( Au + 15 ) = 4.29(10)(6) eV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjd/e2002-00190-3
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  • 16
    Electronic Resource
    Electronic Resource
    Multiply charged titanium cluster anions: production and photodetachment (2000)
    Springer
    Hyperfine interactions 127 (2000), S. 529-532 
    Details
    ISSN: 1572-9540
    Keywords: clusters ; dianions ; photodetachment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Titanium clusters are produced by laser vaporization of a metal wire in a helium gas pulse, stored in a Penning trap, size selected and transformed into multiply charged anions by electron attachment. Both doubly and triply charged titanium clusters are observed. For the first observation of photodetachment of electrons from metal cluster dianions, Ti 55 2- clusters are selected and excited by a laser pulse, which leads to the emission of an excess electron: Ti 55 2- → e− + Ti 55 - .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1012654825860
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  • 17
    Electronic Resource
    Electronic Resource
    Electrochemical reduction of NO and O2 on oxide based electrodes (2000)
    Springer
    Ionics 6 (2000), S. 340-345 
    Details
    ISSN: 1862-0760
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Cyclic voltammetry has been used to investigate the electrocatalytic properties of oxide based electrodes for the reduction of NO and oxygen. Perovskites of compositions LaxSr1-xMnO3+δ, (LSMx), with 0.05 ≤ x ≤ 0.5 and La0.6Sr0.4Fe0.8Mn0.2O3-δ, (LSFM), the spinels Co3O4 and CuCr2O4 and the mixed oxide V2O5 have been selected and investigated in the temperature range 300 – 500 °C. The materials show good catalytic properties against both NO oxidation and NO reduction. The catalytic activity as well as the selectivity is dependent both on the redox behavior of the compound and on the oxygen defect concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374150
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  • 18
    Electronic Resource
    Electronic Resource
    Äther (1942)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 124 (1942), S. 312-314 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01391857
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  • 19
    Electronic Resource
    Electronic Resource
    Farbe und Konstitution von Komplexverbindungen. VIII. Zur Lichtabsorption komplexer Ionen des dreiwertigen TitansProfessor Wilhelm Klemm zum 60. Geburtstag gewidmet (1956)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 284 (1956), S. 153-161 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird eine Anordnung zur Darstellung von wasserfreiem TiCl3 in Anlehnung an die Apparatur von SCHUMB u. Mitarb.(2)(3) beschrieben, die ein grobkristallines Produkt in guter Ausbeute liefert. Das Absorptionsspektrum wäßriger TiCl3-Lösungen, die im wesentlichen Hexaquo-Ionen [Ti(H2O)6]3+ enthalten, wurde neu vermessen. Weiterhin wurden die Absorptionseigenschaften von Lösungen von TiCl3 in absolutem Methanol und Äthanol, in denen die Hexaalkoholatokomplexe [Ti(CH3OH)6]3+ und [Ti(C2H5OH)6]3+ vorhanden sind, ermittelt. Die Darstellung des kristallisierten Titan(III)-hexa-isopropyl-alkoholato-chlorids [Ti(isopr.)6]Cl3 wird beschrieben.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19562840117
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  • 20
    Electronic Resource
    Electronic Resource
    Über die Lichtabsorption von Dipolkomplexen des III-wertigen Titans vom Typ [TiA6]3+ mit A = H2O, CH3OH, C2H5OH und (NH2)2COHerrn Prof. MARTIN LINHARD in Verehrung und Freundschaft zum 60. Geburtstage am 17. Februar 1957 gewidmet. (1957)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 289 (1957), S. 40-65 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird gezeigt, daß in wäßrigen Lösungen von TiCl3 in allen Konzentrationsbereichen wesentliche Anteile von Hydrolyseprodukten vorhanden sind, so daß derartige Lösungen zum Studium der Lichtabsorption definierter Komplexionen des Ti(III) ungeeignet sind. Für die erste Hydrolysenstufe des Ions [Ti(H2O)6]3+ wird eine Hydrolysenkonstante zwischen 1,3 und 0,5 · 10-4 wahrscheinlich gemacht.Das Absorptionsspektrum wäßriger Lösungen von TiCl3 ist in seinem langwelligen Bereich gegen Symmetrieänderungen in erster Sphäre der in den Lösungen vorliegenden Komplexionen (hervorgerufen z. B. durch Hydrolyse) vergleichsweise unempfindlich.Die Darstellung des Hexaharnstoff-Titan(III)-jodids, [Ti(ha)6]J3, wird beschrieben. Die Ergebnisse magnetischer und röntgenographischer Untersuchungen werden mitgeteilt.Das Absorptionsspektrum des [Ti(ha)6]3+-Komplexions in Lösung sowie das Spektrum des kristallisierten Komplexsalzes zeigt eine Bande mit deutlicher Doppelstruktur bei etwa 600 mμ.Die Änderungen des Hexaharnstoff-Titan(III)-Spektrums in wäßriger Lösung infolge Aquotisierung sind denjenigen im Spektrum des entsprechenden Chrom(III)-hexaharnstoff-Komplexes weitgehend ähnlich.Es gelingt, die Absorptionseigenschaften von Titan(III))-Komplexen der Koordinationszahl 6 mit sechs gleichen Dipolliganden (H2O, ROH, CO(NH2)2) mit Hilfe von Symmetriebetrachtungen auf der Grundlage der elektrostatischen Theorie zu verstehen.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19572890106
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