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  • 1990-1994  (38)
  • 1945-1949  (14)
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  • 1
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    Unknown
    (Table 1) TOC, MAR, paleoproductivity, and carbon isotope ratios of kerogens from ODP Site 131-808 (1993)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 131-808A; 131-808B; 131-808C; Accumulation rate, mass; Calculated; Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Element analyser CNS, Carlo Erba NA1500; Event label; Joides Resolution; Leg131; Mass spectrometer Finnigan MAT 251; Ocean Drilling Program; ODP; Paleoproductivity as carbon; Philippine Sea; Sample code/label; δ13C, kerogen
    Type: Dataset
    Format: text/tab-separated-values, 501 data points
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  • 2
    facet.materialart.
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    (Table 2) TOC, maceral composition, and vitrinit reflectance of two vitrinite populations in sediments of ODP Site 131-808 (1993)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 131-808C; Alginite; Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Element analyser CNS, Carlo Erba NA1500; Inertinite; Joides Resolution; Kerogen, Ro; Leg131; Ocean Drilling Program; ODP; Philippine Sea; Sample code/label; Vitrinite
    Type: Dataset
    Format: text/tab-separated-values, 116 data points
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  • 3
    facet.materialart.
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    Organic matter in sediments of ODP Site 131-808 (1993)
    PANGAEA
    In:  Supplement to: Berner, Ulrich; Koch, J (1993): Organic matter in sediments of Site 808, Nankai accretionary prism, Japan. In: Hill, IA; Taira, A; Firth, JV; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 131, 379-385, https://doi.org/10.2973/odp.proc.sr.131.132.1993
    Details
    Publication Date: 2024-01-09
    Description: Microscopic studies reveal a predominance of terrestrial organic matter in sediments of Site 808. Terrestrial vitrinite and inertinite are more abundant (73% to 100%) than marine organic matter (alginite, 0% to 27%), which increases from open oceanic deposits of the Shikoku Basin sediments to sediments of the outer trench wedge. The abundance of terrestrial organic matter is also reflected through carbon isotope values of -23 per mil to -25.9 per mil. Mass accumulation rates of organic carbon are low in hemipelagic sediments of the Shikoku Basin (〈0.2 g/cm**2/k.y.) but increase significantly in sediments of the Nankai Trench (0.2 to 1.7 g/cm**2/k.y.). Although the organic mass accumulation is high in sediments of the Nankai Trench, a comparison of sedimentation rates and total organic carbon suggests relative dilution of organic carbon through turbidite flows. Calculated marine paleoproductivity of organic carbon is low in sediments of the open ocean (Shikoku Basin) and increases closer to the shore (Nankai Trench). Thermal evolution of organic matter is obtained from vitrinite reflectance measurements. Two populations of vitrinites have been observed between 600 and 1234 mbsf. Reflectance values change with increasing depth and temperature in both groups of vitrinite (0.3% to 0.68% in group 1; 0.6% to 1% in group 2).
    Keywords: 131-808A; 131-808B; 131-808C; DRILL; Drilling/drill rig; Joides Resolution; Leg131; Ocean Drilling Program; ODP; Philippine Sea
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 4
    Electronic Resource
    Electronic Resource
    Platinum-Gold Cluster Catalysts for D2(gas)/H2O(liquid) Isotope Exchange (1994)
    s.l. : American Chemical Society
    Inorganic chemistry 33 (1994), S. 3852-3854 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00096a002
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Aluminum-coated optical fibers as efficient infrared timing fiducial photocathodes for synchronizing x-ray streak cameras (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 6935-6944 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The timing fiducial system at the Nova Two-Beam Facility allows time-resolved x-ray and optical streak camera data from laser-produced plasmas to be synchronized to within 30 ps. In this system, an Al-coated optical fiber is inserted into an aperture in the cathode plate of each streak camera. The coating acts as a photocathode for a low-energy pulse of 1ω (λ = 1.054 μm) light which is synchronized to the main Nova beam. The use of the fundamental (1ω) for this fiducial pulse has been found to offer significant advantages over the use of the 2ω second harmonic (λ = 0.53 μm). These advantages include brighter signals, greater reliability, and a higher relative damage threshold, allowing routine use without fiber replacement. The operation of the system is described, and experimental data and interpretations are discussed which suggest that the electron production in the Al film is due to thermionic emission. The results of detailed numerical simulations of the relevant thermal processes, undertaken to model the response of the coated fiber to 1ω laser pulses, are also presented, which give qualitative agreement with experimental data. Quantitative discrepancies between the modeling results and the experimental data are discussed, and suggestions for further research are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347631
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  • 6
    Electronic Resource
    Electronic Resource
    Short wavelength x-ray laser research at the Lawrence Livermore National Laboratory (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 2326-2337 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Laboratory x-ray lasers are currently being studied by researchers worldwide. This paper reviews some of the recent work carried out at Lawrence Livermore National Laboratory. Laser action has been demonstrated at wavelengths as short as 35.6 A(ring) while saturation of the small signal gain has been observed with longer wavelength schemes. Some of the most successful schemes to date have been collisionally pumped x-ray lasers that use the thermal electron distribution within a laser-produced plasma to excite electrons from closed shells in neon- and nickel-like ions to metastable levels in the next shell. Attempts to quantify and improve the longitudinal and transverse coherence of collisionally pumped x-ray lasers are motivated by the desire to produce sources for specific applications. Toward this goal there is a large effort underway to enhance the power output of the Ni-like Ta x-ray laser at 44.83 A(ring) as a source for x-ray imaging of live cells. Improving the efficiency of x-ray lasers in order to produce saturated output with smaller pump lasers is also a goal of this work.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860203
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  • 7
    Electronic Resource
    Electronic Resource
    A simple method for overcoming spatial resolution limitations in soft x-ray spectrograph/detector systems : Proceedings of the 9th topical conference on high temperature plasma diagnostics (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 5122-5123 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We describe a simple method for improving the spectral resolution of soft x-ray and extreme ultraviolet spectrographs which use electro-optical detector/intensifiers. In this method, the spectrometer is focused onto a narrow slit which is angled near 90° with respect to the dispersive axis and placed just in front of the detector. Proper choice of the width and angle of the slit is shown to have the effect of expanding the spectrum along the length of the slit to the point where the spatial resolution limitations of the detector are overcome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143459
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  • 8
    Electronic Resource
    Electronic Resource
    Gamma-Rays from Proton Bombardment of Separated Argon Isotopes (1948)
    [s.l.] : Nature Publishing Group
    Nature 162 (1948), S. 695-696 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ARGON targets can be prepared by bombarding silver disks with the separated beams of the argon isotopes in a mass-spectrograph. This technique has already been used in a study of the resonance capture of protons in the isotopes of neon1. The possibility of collecting argon atoms ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/162695b0
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  • 9
    Electronic Resource
    Electronic Resource
    Reduction of Optical Reflectivity of Glass Surfaces Resulting from Ion Bombardment (1949)
    [s.l.] : Nature Publishing Group
    Nature 164 (1949), S. 19-20 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE bombardment of glass by ions under certain experimental conditions may result in a permanent change of the surface such that the reflexion of light from the surface is reduced and also the transmission through the glass is increased. This effect of ion bombardment was accidentally ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/164019a0
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  • 10
    Electronic Resource
    Electronic Resource
    5,5-Dichloro-10,11-dihydrodibenzo[b, f ]stannepine (1990)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 46 (1990), S. 2088-2091 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270190003985
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