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  • 2000-2004  (137)
  • 1985-1989  (85)
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  • 1
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    (Table T2) Rare earth element composition of ODP Site 191-1179 sediments (2004)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 191-1179B; 191-1179C; Cerium; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Dysprosium; Erbium; Europium; Event label; Gadolinium; Holmium; Inductively coupled plasma - mass spectrometry (ICP-MS); Joides Resolution; Lanthanum; Leg191; Lutetium; Neodymium; North Pacific Ocean; Ocean Drilling Program; ODP; Praseodymium; Samarium; Sample code/label; Terbium; Thulium; Ytterbium
    Type: Dataset
    Format: text/tab-separated-values, 645 data points
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  • 2
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    (Table T1) Major element composition of ODP Site 191-1179 sediments (2004)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 191-1179B; 191-1179C; Aluminium oxide; Calcium oxide; Carbon, inorganic, total; Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Iron oxide, Fe2O3; Joides Resolution; Leg191; Loss on ignition; Magnesium oxide; Manganese oxide; North Pacific Ocean; Ocean Drilling Program; ODP; Phosphorus pentoxide; Potassium oxide; Sample code/label; Sediment type; Silicon dioxide; Sodium oxide; Titanium dioxide; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 579 data points
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  • 3
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    Major and rare earth element composition of ODP Site 191-1179 sediments, northwest Pacific (2004)
    PANGAEA
    In:  Supplement to: Fukukawa, M; Takahashi, Y; Hayasaka, Yasutaka; Sakai, Y; Shimizu, Hiroshi (2004): Geochemical study of ODP Leg 191 Site 1179 sediments: direct observation of Mn and Ce oxidation states. In: Sager, WW; Kanazawa, T; Escutia, C (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 191, 1-24, https://doi.org/10.2973/odp.proc.sr.191.007.2004
    Details
    Publication Date: 2024-01-09
    Description: Depth profiles of major element and rare earth element (REE) abundances in sediment samples (mainly siliceous ooze and clay) recovered from Holes 1179B and 1179C at Site 1179, Ocean Drilling Program Leg 191 (41.4°N, 159.6°E) were determined. The oxidation states of Mn and Ce were determined by X-ray absorption near-edge structure. Some geochemical indicators were tested, including the MnO/TiO2 ratios, a bivariate diagram of La/Ce vs. Al2O3/(Al2O3+Fe2O3), and other discrimination diagrams. The oxidation state of Mn is reduced Mn(II) in the depth profile below 0.60 meters below seafloor (mbsf), which is consistent with relatively low and high abundances of Mn in the sediments and pore waters, respectively. It is possible that the diagenetic effect on the oxidation state and abundance of Mn makes it difficult for the MnO/TiO2 ratio to reflect the depositional environment. The normalized ratio of La and Ce does not change very much with depth, suggesting that the diagenetic effect does not affect the REE signature in the sediments. On the diagram of La/Ce vs. Al2O3/(Al2O3+Fe2O3), the sediments studied here plot at the boundary of the pelagic and continental margin fields. This suggests that continental material has contributed to the sediment to some degree, even though Site 1179 is in a pelagic region of the northwestern Pacific Ocean, 〉1600 km from Japan.
    Keywords: 191-1179B; 191-1179C; DRILL; Drilling/drill rig; Joides Resolution; Leg191; North Pacific Ocean; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 4
    Electronic Resource
    Electronic Resource
    Improvement of sidewall roughness in deep silicon etching (2000)
    Springer
    Microsystem technologies 6 (2000), S. 86-89 
    Details
    ISSN: 1432-1858
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Technology
    Notes: Abstract The recently developed High Aspect Ratio Si Etch (HARSE) process is widely used for applications requiring silicon structures with high aspect ratios. This process relies on the alternation of sidewall passivation and silicon etching phases and enables the obtainment of high silicon etch rates and highly anisotropic profiles. This paper reports an innovative approach to improve the sidewall roughness through a multiple-step HARSE process using an ICP system. Unlike the standard HARSE process, the etching conditions for this new process are gradually altered in order to reinforce the silicon etch efficiency as a function of the silicon depth previously etched. Trenches with aspect ratios as high as 40 can be achieved. The sidewall roughness along the entire etching depth is less than 8 nm rms. In comparison with the standard HARSE process in which ripples appear on the trenches sidewall, the sidewall roughness is improved by a factor of 4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005420050003
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  • 5
    Electronic Resource
    Electronic Resource
    Dependencies of secondary electron yields on work function for metals by electron and ion bombardment (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 3475-3477 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Secondary electron yields depending on work function were measured for 30 species of metal in ultrahigh vacuum by electron and ion bombardment. Secondary electron yields induced by electrons at 10 keV increase with work function, while those by Ar+ ions at 3 keV decrease with increasing work function. The opposite dependencies of secondary electron yields on work function between electron and ion bombardment are discussed on the basis of the different mechanisms of secondary electron emission, i.e., kinetic and potential emission for electron and ion bombardment, respectively. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.126682
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  • 6
    Electronic Resource
    Electronic Resource
    Evanescent wave absorption by Xe(1s5) lying on a discharge tube wall (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 2333-2335 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A simple and sensitive detection method of Xe(1s5) excited atoms in the vicinity of a discharge wall with laser-collision induced fluorescence (LCIF) produced by evanescent wave absorption is proposed. The signal to noise (S/N) ratio was 102. The hyperfine structure (hfs) in the Xe LCIF spectra induced by resonant absorption of Xe(1s5→2p6) was confirmed to be identical with the hfs in laser absorption spectra, although the detection point (xPD) on the discharge wall was chosen independently of the position of the EW absorption (xEW). The insignificantly large fluorescence, which appeared for incident light angles to a prism larger than 4.8°, is explained by the fact that the refracted light emerged in a plasma. The Xe(1s5) number density in a dc Xe discharge, although roughly estimated, on the tube wall between the electrodes is presented. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1409274
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  • 7
    Electronic Resource
    Electronic Resource
    Sleeping mound construction using coral fragments by the rockmover wrasse (2003)
    Oxford, UK : Blackwell Science Ltd
    Journal of fish biology 63 (2003), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The rockmover wrasse Novaculichthys taeniourus was observed using coral fragments for mound construction on the reefs of Kuchierabu-jima Island, Japan. The wrasse heaped between four and 71 pieces of coral fragments on each sand mound, and dived into the mound just before sunset. Coral fragments may facilitate the retention of sleeping sites under competition with other sand-diving wrasses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1095-8649.2003.00243.x
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  • 8
    Electronic Resource
    Electronic Resource
    Humidity sensor using sintered zircon with alkali-phosphate (1985)
    Springer
    Journal of materials science 20 (1985), S. 3027-3033 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A ceramic humidity sensor using alkali phosphate (tribasic), phosphoric acid and zircon as raw materials was studied. The ceramic body prepared by doping with sodium phosphate consists of zircon, Nasicon and probably glassy sodium polyphosphate. The sensitivity for humidity can be improved by doping with sodium phosphate and phosphoric acid. The specimen in which the mole ratio (Na/P) is nearly equal to one is desirable for a humidity sensor with respect to sensitivity, and the impedance is 2×106 Ωcm or below in a dry atmosphere. The formation of Nasicon explains the decrease of impedance in the low humidity region and a decrease of impedance in the high humidity region can be achieved by the formation of sodium polyphosphate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553069
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of sorbed water on the electrical resistance of polysodium phosphate thin films (1986)
    Springer
    Journal of materials science 21 (1986), S. 3751-3758 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Measurements have been made of complex impedance and sorbed water of polysodium phosphate. The resistance and its activation energy decreases with an increase in the amount of sorbed water. The amount of sorbed water is strongly affected by the Na2O/P2O5 mol ratio. The humidity dependence of the activation energy and the resistance is lowered by decreasing the average chain length of polysodium phosphate. This results in an increase in the amount of sorbed water. Especially, in low humidity conditions, the decrease in the resistance and the activation energy are achieved by increasing the concentration of the strongly acidic PO-H group. These improvements can not be achieved by increasing the Na2O/P2O5 mol ratio. In a humid atmosphere, the resistance of the film, in which the Na2O/P2O5 mol ratio is less than 0.8, is inversely proportional to the concentration of the strongly acidic PO-H group.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02431609
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  • 10
    Electronic Resource
    Electronic Resource
    Predation risk and the opportunity for female mate choice in a coral reef fish (2000)
    Springer
    Journal of ethology 18 (2000), S. 109-114 
    Details
    ISSN: 1439-5444
    Keywords: Key words Female mate choice ; Predation risk ; Mating system ; Female mate-change behavior ; Halichoeres melanurus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The influence of predation risk on the opportunity for female mate choice was investigated in the tailspot wrasse Halichoeres melanurus at two sites on a coral reef in Okinawa, Japan. Females mated repeatedly with the nearest males, but they also changed mates frequently at both sites. Mate changes were seen not only in the context of spatiosocial changes (mate disappearance or shifts in male territories) but were also probably the result of actual mate choice by females. Females at one site (site A) changed mates more often and conducted longer spawning trips from their home ranges to male territories than at the other site (site B). Fish at site A were faced with a higher frequency of predators than that of site B. However, fish of site A suffered fewer attacks from predators because they had more shelter, suggesting lower predation risk in that site. These results suggest that females under higher predation risk had less opportunity to choose preferable mates and that they had to mate with the same, nearest males in most cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101640070009
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