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  • 2000-2004  (2)
  • 1960-1964  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 91 (2002), S. 4033-4039 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We measured temporal variations of the distributions of C2 and C3 radical densities in carbon plumes produced by laser ablation of graphite in ambient He gas. Laser-induced fluorescence imaging spectroscopy was used for the measurement. The temporal variations of total numbers of C2 and C3 contained in plumes were evaluated by integrating the density distributions. The experimental observations have shown that the gas-phase production of C2 is comparable to the direct production from the target, while C3 is mainly produced in gas phase by three-body reactions between C and C2. In addition, we have discussed a scenario for the temporal evolution of heavy clusters (Cn with n≥4). The present results are useful for understanding initial formation processes of carbon clusters in laser-ablation plumes. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 206-213 (Dec. 2001), p. 211-214 
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 65 (1963), S. 425-433 
    ISSN: 1432-1335
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Glucosamine and GAL inhibited the anaerobic glycolysis of Ehrlich ascites tumor cells by 45% and 35% respectively, but NGA and NGAL showed no effect. GA and GAL were phosphorylated less by yeast-hexokinase than was glucose. The phosphorylation of glucose was inhibited about 28% by GA and about 20% by GAL. The endogenous respiration of the cells of Ehrlich ascites tumor and of ascites hepatoma (AH-130) was inhibited by GA to about the same degree as by glucose (about 45%). The Crabtree effect of glucose control was increased by GA; in contrast, it was somewhat decreased by GAL. The respiratory inhibiting effect of glucose and GA were changed little with IAA or KF. The inhibiting effect of GA was almost completely abolished by DNP; that of glucose only in the first 30 min. The activity of glutaminase-I of Ehrlich ascites tumor cells was 4–5 times greater than that of the liver of tumor-bearing or healthy mice. The enzymatic activity was inhibited by glucose about 45%, by GA about 35%, by GAL about 10%, and by glutaminic acid completely. When the tumor cells were incubated with GA, NH3 was liberated in large amounts, probably as the result of enzymatic deamination. The mice with Ehrlich ascites tumors survived longer after intraperitoneal injection of GA than control animals.
    Notes: Zusammenfassung Die anaerobe Glykolyse bei Ehrlich-Ascitestumorzellen wurde durch GA und GAL (10−2 M) um etwa 45% bzw. 35% gehemmt. N-Acetyl-d-Glucosamin und NGAL-Zusatz hatte keine Wirkung. Durch Hefehexokinase wurden GA und GAL in einem geringeren Ausmaß phosphoriliert als Glucose. Die Phosphorilierung der Glucose wurde durch GA um 28%, durch GAL um 20% gehemmt. Die endogene Atmung von Tumorzellen des Ehrlich-Ascitestumors und des Asciteshepatoms (AH-130) wurde durch GA in etwa dem gleichen Ausmaß wie durch Glucose (um etwa 45%) gehemmt. Der Crabtree-Effekt wurde durch GA verstärkt, durch GAL dagegen etwas abgeschwächt. Die atmungshemmende Wirkung von Glucose und GA wurde durch IAA bzw. KF nur wenig verändert. Die hemmende Wirkung von GA wurde durch DNP fast völlig aufgehoben, die der Glucose nur in den ersten 30 min. Die Glutaminase-I Aktivität bei Ehrlich-Ascitestumorzellen war vier- bis fünfmal höher als in der Leber von krebstragenden und gesunden Mäusen. Die Fermentaktivität wurde durch Glucose um 45%, durch GA um 35%, durch GAL um 10% und durch Glutaminsäure fast völlig gehemmt. Bei Inkubation der Tumorzellen mit GA eine größere Menge Ammoniak freigesetzt. Die Überlebenszeit von Ehrlich-Ascitestumor tragenden Mäusen wurde durch eine intraperitoneale Behandlung der Tiere mit GA verlängert.
    Type of Medium: Electronic Resource
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