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  • 1
    Electronic Resource
    Electronic Resource
    Lasing operation of chemical oxygen-iodine laser without water-vapor trap (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 1785-1786 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: cw laser action from chemically pumped iodine atoms was achieved without a cold trap to freeze water vapor. An alkaline solution of H2O2 was circulated in a porous pipe generator, which made it possible to cool the solution externally. A lasing operation time of about 100 s with a constant output power of 5 W was obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339921
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  • 2
    Electronic Resource
    Electronic Resource
    High flux VUV beamline for photochemical processing study at Photon Factory (abstract) : INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION TSUKABA (JAPAN) 29 AUG−2 SEPT 1988 (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 2252-2252 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Recent progress in photochemical processing involving photochemical etching and photochemical vapor deposition are really remarkable and such processes become the most promising candidates as a next-generation VLSI fabrication technology. Thus the study to elucidate the reaction mechanism of the photochemical processing is of both fundamental and technological importance. In order to promote this study, we have designed and constructed a new beamline at Photon Factory (BL 12C). It consists of three major parts; a prefocusing mirror, a multilayer mirror monochromator, and a differential pumping system. A Pt-coated SiC toroidal mirror (Rh:0.539 m, Rv:490 m) is installed in a prefocusing mirror chamber (18.3 m from the source), accepts 5.0-mrad horizontal and 1.0-mrad vertical divergence of the synchrotron radiation, reflects it 3.8° upward, and focuses it onto the middle of the exit arm of the monochromator (32.3 m from the source). A multilayer mirror, which was designed and fabricated by Yamamoto et al., so as to get high reflectance around 100 eV of photon energy (see the preceding paper), is installed in the monochromator, steers SR beam downward, and selects photon energy by changing an incident angle. With this arrangement, a quasimonochromatic and bright beam is obtained in the energy region 80–100 eV. The output flux is expected to be ∼1015 photons/s⋅10% bw with 200-mA ring current.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140785
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  • 3
    Electronic Resource
    Electronic Resource
    Angular distributions of photofragments generated in the two-photon dissociation of nitrogen dioxide and carbon disulfide (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 4425-4430 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Two-photon dissociation of nitrogen dioxide and carbon disulfide at 308 nm has been studied by means of multiphoton ionization of photofragments. The angular distributions of fragments are well represented by a form of 1+β2P2(cos θ)+β4P4(cos θ). Because the intermediate state of NO2 (2B2) generated by the first one-photon process is dissociative, the coefficient β4 for the fourth degree Legendre polynomial is appreciable. The coefficient β4 for CS2 is, however, not appreciable because the intermediate CS2 (1B2) state has a long fluorescence lifetime. The angular distributions not only reveal the symmetry and lifetimes of the two-photon excited states of NO2 and CS2 but also information on the two-photon excitation process of these molecules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.452714
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  • 4
    Electronic Resource
    Electronic Resource
    Angular distributions of photofragments from NO2 photodissociation (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 4431-4437 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The angular distributions of recoil of NO molecules from the photodissociation of NO2 near the dissociation threshold of 397.86 nm are presented and analyzed to obtain information about the effect of molecular rotation of parent molecules on the angular distribution. For the one-photon dissociation process, as laser wavelengths become closer to the dissociation threshold, the anisotropy of the angular distribution is reduced. When laser wavelengths become larger than the threshold, NO2 dissociates via two-photon absorption, and the photofragment angular distribution again becomes anisotropic reflecting the second photon absorption.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.452715
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  • 5
    Electronic Resource
    Electronic Resource
    Vacuum fusion determination of micro-quantities of bulk gases in low carbon iron without an effect of surface gases (1985)
    Springer
    Microchimica acta 86 (1985), S. 347-356 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Vacuum Fusion Determination of Micro-quantities of Bulk Gases in Low Carbon Iron Without an Effect of Surface Gases Micro-quantities of bulk and surface oxygen and hydrogen in low carbon iron was simultaneously determined by the surface-area-variation method using vacuum fusion analysis. Among the difference of three surface treatments, silicon carbide abrasive, electropolishing and hydrogen reduction methods, bulk oxygen and hydrogen were in agreement within their errors, however, surface oxygen and hydrogen were influenced from the surface treatments. Even in the case of electropolishing, which gave the smallest surface oxygen value, bulk oxygen less than 10μg/g is needed to discriminate from the surface oxygen. Bulk hydrogen of 0.03μg/g was determined without the effect of surface hydrogen in the hydrogen reduction treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01206905
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  • 6
    Electronic Resource
    Electronic Resource
    Vacuum fusion determination of oxygen in gadolinium, terbium metal and iron-terbium alloy (1986)
    Springer
    Microchimica acta 90 (1986), S. 215-224 
    Details
    ISSN: 1436-5073
    Keywords: oxygen determination ; vacuum fusion analysis ; inert gas fusion analysis ; gadolinium, terbium ; iron-terbium alloy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The extraction conditions for the accurate determination of oxygen in gadolinium, terbium and iron-terbium alloy using vacuum fusion analysis were studied. The influence of the gettering effect, the analyzing temperature and the weight ratio of the bath metal to the sample were investigated. Oxygen values of gadolinium and terbium were measured by the graphite crucible, the graphite capsule, the tin bath, the iron-tin bath and the platinum-tin bath techniques in the temperature range of 1500–2100 °C using vacuum fusion analysis. These oxygen values were compared with those obtained by inert gas fusion analysis. In inert gas fusion analysis, the samples were analyzed with iron and tin in a tin capsule, and the samples with platinum in a tin capsule were analyzed in a graphite capsule enclosing with carbon powder. Oxygen values of both metal samples in the graphite capsule at 2000 °C, with an iron-tin bath at 1850 °C and a platinum-tin bath at 2000 °C in vacuum fusion analysis, were respectively in good agreement within their errors; the oxygen values of gadolinium were also in good agreement with that from inert gas fusion analysis in the iron-tin bath, but those of terbium were not in agreement. This agreement for gadolinium guarantees the reliability of the conditions for the accurate determination, and the difference of oxygen values for terbium suggests a need for further consideration on the conditions of the inert gas fusion analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01364302
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  • 7
    Electronic Resource
    Electronic Resource
    Venoms from six species of marine fish: lethal and hemolytic activities and their neutralization by commercial stonefish antivenom (1989)
    Springer
    Marine biology 103 (1989), S. 285-289 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A specimen of the stonefish Synanceja verrucosa was captured in Okinawa in March 1988. Live specimens of the scorpionfish Inimicus japonicus were purchased from the Tokyo Central Wholesale Market in November 1988 and those of four species of zebrafish Pterois lumulata, P. volitans, P. antennata and Dendrochirus zebra from an aquarium in December 1988. Crude venoms were extracted from dorsal spines of the six species. All venoms exhibited lethal activity against mice and hemolytic activity specific for rabbit erythrocytes. The lethal activity (or hemolytic activity) of each venom was very unstable to freezing, lyophilization and heating. Both lethal and hemolytic activities of S. verrucosa venom were remarkably neutralized by the commerical stonefish (Synanceja trachynis) antivenom. This antivenom was also effective, to some extent, in counteracting the other venom activities. The neutralizing capacities of the antivenom were calculated to be 7310 LD50 ml-1 for S. verrucosa venom and 1 220 to 2 990 LD50 ml-1 for the other venoms. Results of neutralization tests suggest that venoms from the six species were comparable in terms of antigenecity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00397261
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  • 8
    Electronic Resource
    Electronic Resource
    Phases with fluorite superstructures in the pseudo-ternary system PbO-Bi2O3-TeO2 (1990)
    Springer
    Journal of materials science 9 (1990), S. 580-582 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00725883
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  • 9
    Electronic Resource
    Electronic Resource
    Vegetation patterns in relation to micro-scale landforms in hilly land regions (1993)
    Springer
    Plant ecology 106 (1993), S. 147-154 
    Details
    ISSN: 1573-5052
    Keywords: DCA analysis ; Lower hillslope ; Landform units ; Species composition ; Upper hillslope
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Spatial structures of landforms as constants affecting vegetation patterns are discussed based on analyses of hilly land regions, mostly in the vicinity of Sendai, northeast Japan. The lower part of a hillslope is characterized by relatively active processes of soil erosion, landslides and slope failure. It supports a plant community different from that on the upper part of the hillslope. These two parts are termed the lower hillslope and the upper hillslope, respectively. The upper hillslope consists of valley heads with no stream water nor stream channels. Since a valley head is comprised of several micro-scale landform units, an upper hillslope can be subdivided into these landform units. Plant communities vary in their species compositions and structures as well as in some other ecological characteristics paralleling changes in their respective micro-scale landform units. However, the variations in species composition within upper hillslopes are not as extreme as those between the upper and lower hillslopes. xx]Papers presented at the Vth INTECOL Congress at YOKO-hama 1990.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00045068
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  • 10
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    Vacuum fusion determination of oxygen in gadolinium, terbium metal and iron-terbium alloy (1986)
    Springer
    Details
    Publication Date: 1986-05-01
    Print ISSN: 0026-3672
    Electronic ISSN: 1436-5073
    Topics: Chemistry and Pharmacology
    Published by Springer
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