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  • 1
    Electronic Resource
    Electronic Resource
    Effect of cathodic reduction on catalytic activity of amorphous alloy electrodes for electrooxidation of sulfite (1995)
    Springer
    Journal of applied electrochemistry 25 (1995), S. 953-961 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Active electrode materials for a new zinc electrowinning process, in which the thermodynamic cell voltage is about half that of the conventional process by replacing oxygen evolution by anodic oxidation of SO2 produced in the zinc smelting process have been studied. Immersion in HF solution and subsequent cyclic voltammetry (CV) in sulfuric acid are known to be effective surface activation treatments of the amorphous alloy electrodes. The galvanostatic cathodic reduction (CR) treatment was applied to obtain further activation for sulfite oxidation for HF- and CV-treated electrodes prepared from amorphous nickel-valve metal-platinum group metal alloys. This treatment has been found to be effective in enhancing the activity. Among the amorphous Ni-40Nb alloys containing platinum group elements, the platinum-containing electrode showed the highest catalytic activity, which was higher than that of platinized platinum. Furthermore, the electrocatalytic activities of CR-treated electrodes prepared from amorphous alloys containing platinum and rhodium, and platinum and ruthenium were higher than that of the electrode containing only platinum. According to XPS analysis of the amorphous Ni-40Nb-1Pt-1Ru alloy specimen the enrichment of platinum and ruthenium occurred by CV treatment, and a small amount of oxidized platinum and ruthenium species remained on the electrode surfaces, but most of them were cathodically reduced to the metallic state by CR treatment. High catalytic activities for sulfite oxidation can be attributed to the metallic state of platinum and ruthenium contained in the alloy electrodes, even though the activity of these electrocatalysts is higher than that of pure Pt or Ru.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00241590
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  • 2
    Electronic Resource
    Electronic Resource
    CH4/CD4 isotope effect on the reaction of adsorbed hydrocarbon species in CO2-reforming over Ni/Al2O3 catalyst (1997)
    Springer
    Catalysis letters 44 (1997), S. 19-21 
    Details
    ISSN: 1572-879X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract By replacing CH4 with CD4, the isotope effect on the reaction of adsorbed hydrocarbon species with CO2 over Ni/Al2O3 catalyst was studied using pulse surface reaction rate analysis (PSRA). The first-order rate constant for this step was 1.45 times larger for CH4 than for CD4. The observed isotope effect suggests that the reaction of adsorbed hydrocarbon species with CO2 (or adsorbed oxygen) is rate-controlling for the reforming of CH4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018992001364
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  • 3
    Electronic Resource
    Electronic Resource
    Electronic state anisotropy and the Fermi surface topology of the incommensurate organic superconducting crystal (MDT-TSF)(AuI $\mathsf{_2}$ ) $\mathsf{_{0.436}}$ (2003)
    Springer
    The European physical journal 36 (2003), S. 161-167 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. The Fermi surface (FS) shape of the organic superconductor (MDT-TSF)(AuI2)0.436 with an incommensurate anion structure (MDT-TSF: methylenedithio-tetraselenafulvalene) has been investigated by means of the optical reflectance spectra and angular-dependent magnetoresistance oscillations (AMRO). The difference of the plasma frequencies between the interstack and the intrastack directions indicates that the overall band structure has small anisotropy ( $\omega_{p,\perp} / \omega_{p,\parallel} \approx 0.62$ ). The observation of the AMRO shows the presence of a small closed orbit, which can be assigned to the overlapped area of the large FS. This demonstrates that the incommensurate anion potential is crucial to remove the degeneracy of the energy bands on the zone boundary. The magnetoresistance peak in the fields applied within the conducting layers shows an unusually large interlayer transfer integral ( $t_{\perp} \approx 1$ meV) among organic superconductors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e2003-00330-1
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  • 4
    Electronic Resource
    Electronic Resource
    Development of new hypoxic cell sensitizers: Amides of nitrobenzoic acid with spermidine and spermine (1983)
    Springer
    Cellular and molecular life sciences 39 (1983), S. 1116-1118 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary New type hypoxic cell sensitizers, N1, N10-bis(4-nitrobenzoyl)spermidine (1) and N1,N14-bis(4-nitrobenzoyl)-spermine (2), have been developed. These compounds were shown to be more effective radiosensitizers to hypoxic cells than misonidazole (3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01943137
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of oridonin, aRabdosia diterpenoid, on radiosensitization with misonidazole (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 1221-1223 
    Details
    ISSN: 1420-9071
    Keywords: Oridonin ; Rabdosia diterpenoid ; thiol-reactive agent ; misonidazole ; radiosensitizer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The radiosensitization brought about by oridonin, one of theRabdosia diterpenoids, alone or in combination with misonidazole, was investigated in Chinese hamster V79 cells. The enhancement ratio of 1.92 was obtained when 0.01 mM oridonin and 1 mM misonidazole were administered to hypoxic cells under radiation. The enhancement ratios of oridonin and misonidazole for hypoxic cells were 1.16 and 1.59 respectively. Hence, a supra-additive effect was obtained by the combined treatment with these two drugs. Under aerobic conditions, no effect of 0.01 mM oridonin on the radiosensitization caused by misonidazole was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01945533
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  • 6
    Electronic Resource
    Electronic Resource
    Study of Zeolite Molecular Sieves for Production of Oxygen by Using Pressure Swing Adsorption (1999)
    Springer
    Adsorption 5 (1999), S. 57-61 
    Details
    ISSN: 1572-8757
    Keywords: Faujasite ; nitrogen adsorption ; positions of cations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Adsorption of nitrogen on Li or Ca exchanged Faujasite at various Si/Al mole ratios (1.00, 1.23, and 1.69) and exchange levels (0 to nearly 100%) has been measured at 298 K. Nitrogen capacities were compared with the positions of Li and Ca. It has been demonstrated that Li at site III and Ca at site II adsorb nitrogen, and nitrogen capacities depend on Li per unit cell in Li-Faujasite and Ca per unit cell in Ca-Faujasite regardless of Si/Al.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026402425399
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  • 7
    Electronic Resource
    Electronic Resource
    The role of Trochilioides recta in elimination of bulking (1987)
    Springer
    Applied microbiology and biotechnology 26 (1987), S. 195-198 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary In the activated sludge treatment plant of Onoda City, bulking has often been caused by filamentous bacteria, types 021 N and I-2. Bulking disappeared when Trochilioides recta increased in the mixed liquor of the aeration tank. T.-recta was observed to ingest types 021 N or I-2. It may therefore be anticipated that this type of bulking could be controlled by T. recta.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00253909
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  • 8
    Electronic Resource
    Electronic Resource
    Electron traps in CdS single crystals obtained by admittance spectroscopy on the hetero- and Schottky junctions (1979)
    Springer
    Applied physics 18 (1979), S. 345-352 
    Details
    ISSN: 1432-0630
    Keywords: 71.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The electron trap parameters in semiconducting CdS single crystals were obtained by admittance spectroscopy on its hetero- and Schottky junctions, and the trap depths obtained were 0.065, 0.09, 0.15 0.20, and 0.40 eV. The capture cross-section of the shallowest trap on the Cd-face of the crystals was about 10−19 cm2, one order smaller than that of the bulk crystal. The resolving power of the employed method was about 50 meV to distinguish the two traps with different depths. The results of the computer simulation of this method suggested that the trap can be determined when the trap density is at least one order lower than the donor density. The calculated density of the each trap was 1×1015 cm−3 for the shallowest trap and 2×1016 cm−3 for the remaining traps, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00899687
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  • 9
    Electronic Resource
    Electronic Resource
    Metallothionein induced in the earthworm (1981)
    Springer
    Cellular and molecular life sciences 37 (1981), S. 1187-1189 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary One of the 3 different molecular weight cadmium-binding proteins induced in the earthworm was characterized as a metallothionein; this characterization was based on a high cysteine and cadmium content, low molecular weight, heatstability, and mercaptide bonding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01989911
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  • 10
    Electronic Resource
    Electronic Resource
    Morphological alterations of basal cells of vaginal epithelium in neonatally oestrogenized mice (1982)
    Springer
    Cellular and molecular life sciences 38 (1982), S. 389-390 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Neonatal oestrogen treatment results in the development of vaginal cancers in the mouse. A morphological sign which probably indicated early invasion of altered vaginal cells into the stroma through gaps in the basal lamina was first seen at 10 months of age in neonatally oestrogenized C57Black mice. Prior to this, a decrease in the numbers of cellular attachment organelles such as half desmosomes and desmosomes was observed by 3 months.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01949411
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