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  • Springer  (135)
  • National Academy of Sciences  (19)
  • Oxford University Press  (9)
  • 1995-1999  (163)
  • 1
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    Identification of Heat Shock Protein 90-Associated 84-kDa Phosphoprotein (1999)
    Oxford University Press
    Details
    Publication Date: 1999-12-01
    Print ISSN: 0021-924X
    Electronic ISSN: 1756-2651
    Topics: Biology , Chemistry and Pharmacology
    Published by Oxford University Press on behalf of Japanese Biochemical Society.
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Production of recombinant hirudin in Hansenula polymorpha: variation of gene expression level depends on methanol oxidase and fermentation strategies (1998)
    Springer
    Journal of industrial microbiology and biotechnology 21 (1998), S. 1-5 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: hirudin; Hansenula polymorpha; methylotrophic yeast; methanol oxidase; autonomously replicating sequence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Various recombinant Hansenula polymorpha strains were developed and compared for their level of expression of the anticoagulant hirudin. H. polymorpha DL1-57 harboring an autonomously replicating sequence, HARS36, efficiently expressed the gene for recombinant hirudin. The effect of methanol oxidase (MOX) on the expression of the hirudin gene in H. polymorpha DL1-57 was studied, and the fermentation strategies coupled with the MOX activity and an antioxidant, tocopherol, were also examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.2900545
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  • 3
    Electronic Resource
    Electronic Resource
    Fabrication and transmission experiments of distributed feedback laser modules for 2.5 Gb s-1 optical transmission systems (1995)
    Springer
    Optical and quantum electronics 27 (1995), S. 547-552 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A distributed feedback (DFB) laser module has been developed for 2.5 Gbs-1 optical transmission systems. The DFB laser has a multiple-quantum-well (MQW) active layer and a planar buried heterostructure (PBH) for a low threshold current and stable singlemode operation with low chirping. A PBH DFB laser module with a single-mode fibre pigtail and an optical isolator was designed and fabricated by employing a single lens and a laser welding method. The fabricated MQW PBH DFB laser module is shown to be a suitable light source for 2.5 Gb s-1 optical transmission systems with a minimum received power of-33 dBm after 47 km conventional optical fibre transmission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00563596
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  • 4
    Electronic Resource
    Electronic Resource
    Polarimetric fibre laser sensors using Er-doped fibre (1995)
    Springer
    Optical and quantum electronics 27 (1995), S. 481-485 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A polarimetric fibre laser sensor with narrow polarization mode beat frequency bandwidth is demonstrated using a polarization-maintaining Er-doped fibre. The slope coefficients of 124kHz°C-1 cm-1 and 137kHz μm-1 are obtained for temperature change and longitudinal strain measurements, respectively. A new configuration of polarimetric fibre laser sensor is also demonstrated using a conventional Er-doped fibre as a gain medium and a short length of polarization-maintaining fibre as a sensing part.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00563587
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  • 5
    Electronic Resource
    Electronic Resource
    High-performance InGaAs/InP avalanche photodiode for a 2.5 Gb s-1 optical receiver (1995)
    Springer
    Optical and quantum electronics 27 (1995), S. 553-559 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract High-speed mesa type SAGCM avalanche photodiodes for 2.5 Gb s-1 optical receivers have been realized for the first time. The device is designed by dimensional analysis based on the electric field distribution in a multiplication layer and a charge plate layer. Very low dark current and high gain are obtained with an active region of 30 μm diameter. From the 1.55 μm wavelength 2.488 Gb s-1 transmission experiment, sensitivity of-33.6 dBm is measured using pseudorandom (223–1) NRZ patterns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00563597
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  • 6
    Electronic Resource
    Electronic Resource
    Measurement of the linear electrooptic effect in poled polymer thin films with coplanar electrodes (1995)
    Springer
    Optical and quantum electronics 27 (1995), S. 347-354 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The linear electrooptic (EO) effect of poled polymer thin film is measured in the coplanar-electrode structure. The optical geometry of the coplanar-electrode thin-film setup is analysed theoretically to find a relationship between the linear optical parameters and the EO modulation intensity. EO modulated intensity is measured as a function of the direction of incident light polarization relative to the macroscopic optic axis, also as a function of optical bias determined by quarter-wave plate. Comparison of experimental measurements with the theoretical analysis shows good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00563569
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  • 7
    Electronic Resource
    Electronic Resource
    Characterization of Pt-Cu-Fe ternary electrocatalysts supported on carbon black (1996)
    Springer
    Journal of applied electrochemistry 26 (1996), S. 623-630 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Ternary Pt-Cu-Fe alloy catalysts, useful for low temperature fuel cells, were prepared from aqueous media, followed by heat treatment at 900 °C for various heating periods. Supported metal crystallites were characterized with various techniques including XRD, XPS, TEM and ICP-AES. XRD patterns indicate that the lattice structure of platinum changes from a face-centred cubic to a contracted facecentred tetragonal structure as it forms an alloy. As the heating period increases, the extent of formation of an ordered alloy increases and the formation is completed in 2.5 h, as confirmed by the intensity of superlattice diffraction lines. The presence of different oxidation states is confirmed by XPS and the amount of higher oxidation state is reduced by heat-treatment, but there is no evidence of development of a new photoelectron peak or shift in binding energy by alloy formation. For the electrochemical reduction reaction of oxygen in fuel cell operation, ordered alloys have shown improved catalytic activity compared to platinum alone. After the stability test in hot phosphoric acid, the ordered structure is preserved even though a significant amount of transition metal is dissolved, and some increase in particle size in the heat-treated catalysts is observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00253461
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  • 8
    Electronic Resource
    Electronic Resource
    Characterization of centrifugally atomized Al-12Si-5Fe-3Cu-1Mg(wt%) alloy powder and extruded rod (1996)
    Springer
    Advanced performance materials 3 (1996), S. 29-42 
    Details
    ISSN: 1572-8765
    Keywords: centrifugal atomization ; rapidly solidified powder ; hot extrusion ; phase transformation ; depurative degassing ; coarsening of Si particles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The Al-12Si-5Fe-3Cu-1Mg(wt%) alloy was rapidly solidified by centrifugal atomization. The microstructural characteristics of rapidly solidified powder and the microstructure changes with heat treatment were investigated in terms and related to powder size. The microstructures of the powder consisted of dendritic α-Al, eutectic phase, Cu-rich phase, and needle-like intermetallic compounds. These phases were much finer than that of ingot cast structure and the size decreased with increasing cooling rate. The X-ray diffraction of the atomized powders revealed the presence of non-equilibrium 3-(AlFeSi) intermetallic phase. This phase appeared to transform to an equilibrium β-(AlFeSi) phase by heating at temperatures above 470°C. The extruded rod which was hot extruded at 360°C with an extrusion ratio of 40:1 also revealed the presence of the β-(AIFeSi) intermetallic phase. Using DSC, the exothermic peak due to precipitation from the supersaturated α-Al matrix was observed in the range of 200–250°C during continuous heating of atomized powder, and the size of the peaks increased with decreasing powder size.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00136858
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  • 9
    Electronic Resource
    Electronic Resource
    Enhancement in methanol oxidation by spontaneously deposited ruthenium on low-index platinum electrodes (1998)
    Springer
    Catalysis letters 50 (1998), S. 69-75 
    Details
    ISSN: 1572-879X
    Keywords: well-ordered electrodes ; platinum/ruthenium catalysis ; methanol ; Auger electron spectra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Using Auger electron spectroscopy and electrochemistry we confirm that ruthenium is spontaneously deposited on platinum single-crystal faces from ruthenium(III) chloride solutions in perchloric acid. The deposit is catalytically active towards methanol present in electrolytic media. On the Pt(111) surface - the most active catalyst for the oxidation process - the data show that the packing density of ruthenium is 9.9±1.5% and increases with ruthenium concentration in the electrolytic bath, confirming the previous electrochemical coverage estimate. In the most favorable instances the ruthenium enhancement factor, the current ratio due to methanol oxidation with and without ruthenium on the surface, is equal to15 (at 0.490 V vs. RHE reference on Pt(111)). We believe this study is an important addition to our long-range efforts in investigating surface structure effects in platinum-ruthenium heterogeneous electrocatalysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019042329841
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  • 10
    Electronic Resource
    Electronic Resource
    Electrical and optical properties of indium tin oxide thin films grown by pulsed laser deposition (1999)
    Springer
    Applied physics 69 (1999), S. S447 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 81.15.Fg; 72.80.Ey; 78.66.Hf; 85.60.Jb
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Indium tin oxide (ITO) thin films (200–400 nm in thickness) have been grown by pulsed laser deposition (PLD) on glass substrates without a post-deposition anneal. The electrical and optical properties of these films have been investigated as a function of substrate temperature and oxygen partial pressure during deposition. Films were deposited at substrate temperatures ranging from room temperature to 300 °C in O2 partial pressures ranging from 0.1 to 100 mTorr. For 300 nm thick ITO films grown at room temperature in oxygen pressure of 10 mTorr, the electrical conductivity was 2.6×10-3 Ω-1cm-1 and the average optical transmittance was 83% in the visible range (400–700 nm). For 300 nm thick ITO films deposited at 300 °C in 10 mTorr of oxygen, the conductivity was 5.2×10-3 Ω-1cm-1 and the average transmittance in the visible range was 87%. Atomic force microscopy (AFM) measurements showed that the RMS surface roughness for the ITO films grown at room temperature was ∼7 Å, which is the lowest reported value for the ITO films grown by any film growth technique at room temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051435
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