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  • 1
    Unknown
    Tokyo : TERRAPUB
    Keywords: geochemistry ; cosmochemistry ; planets, meteorites and cosmic dusts ; mantle and crust ; water, gases and diamonds
    Description / Table of Contents: 1. Planets, Meteorites and Cosmic Dusts --- Primordial Xe Isotopic Abundances and 244Pu-136Xe Ages of Primitive Xe Differentiated Achondrites / Eugster O., Weigel A., and Michel Th. / pp. 1-9 --- The RELAX Mass Spectrometer and Its Application to Iodine-Xenon Dating / Gilmour J. D. and Turner G. / pp. 11-21 --- Enrichment and Fractionation of Noble Gases in Bubbles / Takaoka N. / pp. 23-29 --- "Q-Gases" as "Local" Primordial Noble Gas Component in Primitive Meteorites / Wieler R. / pp. 31-41 --- Weathering and Atmospheric Noble Gases in Chondrites / Scherer P., Schultz L., and Loeken T. / pp. 43-53 --- Radiogenic Noble Gas Constraints on Mars' Evolution / Sasaki S. / pp. 55-66 --- Retentivity of Solar He and Ne in IDPS in Deep Sea Sediment / Hiyagon H. / pp. 67-75 --- Influx and Age Constraints on the Recycled Cosmic Dust Explanation for High 3He/4He Ratios at Hotspot Volcanos / Trull T. / pp. 77-88 --- 2. Mantle and Crust --- Geochronology of Tellurium Ores and the Double-Beta Decay Lifetime of 130Te / Podosek F. A., Brannon J. C., Bernatowicz T. J., Brazzle R., Grauch R., Cowsik R., and Hohenberg C. M. / pp. 89-113 --- Cosmic-Ray-Produced Neon at the Surface of the Earth / Graf T., Kim J. S., Marti K., and Niedermann S. / pp. 115-123 --- Current Status of Xes-Xen Dating / Shukolyukov Yu. A., Meshik A. P., Krylov D. P., and Pravdivtseva O. V. / pp. 125-146 --- Atmospheric, MORB-Like, and Crustal-Derived Noble Gas Components in Subduction-Related Samples / Patterson D. B., Honda M., and McDougall I. / pp. 147-158 --- Noble Gases in Deformed Xenoliths from an Ocean Island: Characterization of a Metasomatic Fluid / Farley K. A., Poreda R. J., and Onstott T. C. / pp. 159-178 --- Deconvolution of Multiple Components of Neon and Helium in Mantle-Derived Samples / Patterson D. B., Honda M., and McDougall I. / pp. 179-189 --- Neon and Argon Isotopic Constraints on Earth-Atmosphere Evolution / Marty B. and Allé P. / pp. 191-204 --- The Effect of Water on Noble Gas Signatures of Volcanic Materials / Kaneoka I. / pp. 205-215 --- 3. Water, Gases and Diamonds --- Indigenous and Extraneous Noble Gases in Terrestrial Diamonds / Begemann F. / pp. 217-227 --- Isotopic Variations of Helium in the Diamonds of the Kokchetav Massif's Metamorphic Rocks, Kazakhstan / Pleshakov A. M. and Shukolyukov Yu. A. / pp. 229-243 --- Helium Isotopic Information from Diamonds: Critical Data Available and Needed / Lal D. / pp. 245-260 --- He-Ar Isotope Systematics of Fluid Inclusions: Resolving Mantle and Crustal Contributions to Hydrothermal Fluids / Stuart F., Turner G., and Taylor R. / pp. 261-277 --- Mantle Helium in the Groundwater of the Mirror Lake Basin, New Hampshire, U.S.A. / Torgersen T., Drenkard S., Farley K., Schlosser P., and Shapiro A. / pp. 279-292 --- Volcanic Activity Revealed by Isotope Systematics of Gases from Hydrothermal Springs in Tengchong, China / Wang X., Chen J., Li Y., Wen Q., Sun M., Li C., and Hu G. / pp. 293-304 --- Helium Isotopic Compositions in Quaternary Volcanic Geothermal Area near Indo-Eurasian Collisional Margin at Tengchong, China / Xu S., Nakal S., Wakita H., Wang X., and Chen J. / pp. 305-313 --- 4. Basic Properties --- Sites and Behaviors ofNoble Gas Atoms in MgO Crystal Simulated by the Molecular Dynamics (MD) Method / Tsuchiyama A. and Kawamura K. / pp. 315-323 --- Noble Gas Solubilities in Melts and Crystals / Carroll M. R., Draper D. S., Brooker R. A., and Kelley S. / pp. 325-341 --- Noble Gas Partition between Basaltic Melt and Olivine Crystals at High Pressures / Shibata T., Takahashi E., and Ozima M. / pp. 343-354 --- Noble Gas Partitioning between Metal and Silicate under High Pressures: The Case of Iron and Peridotite / Sudo M., Ohtaka O., and Matsuda J. / pp. 355-372 --- Noble Gas Partitioning in Natural Samples: Results from Coexisting Glass and Olivine Phenocrysts in Four Hawaiian Submarine Basalts / Valbracht P. J., Honda M., Staudigel H., McDougall I., and Trost A. P. / pp. 373-381 --- Retrospective --- After Dinner Talk (A Diagrammatic Summary of Noble Gas Isotope Research in the Physics Department at Berkeley) / Reynolds J. H. / pp. 383-386
    Pages: Online-Ressource (VI, 386 Seiten)
    ISBN: 4887041144
    Language: English
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  • 2
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Reddy, V Viswanatha; Subbarao, K V; Reddy, G R; Matsuda, J; Hekinian, Roger (1978): Geochemistry of volcanics from the Ninetyeast Ridge and its vicinity in the Indian Ocean. Marine Geology, 26(1-2), 99-117, https://doi.org/10.1016/0025-3227(78)90048-8
    Publication Date: 2023-06-27
    Description: The basalts and oceanic andesites from the aseismic Ninetyeast Ridge display trachytic, vesicular and amygdaloidal textures suggesting a subaerial volcanic environment. The normative composition of the Ninetyeast Ridge ranges from olivine picriteto nepheline-normative alkaline basalt, suggesting a wide range of differentiation. This is further supported by the fractionation-differentiation trends displayed by transition metal trace elements (Ni, Cr, V and Cu). The Ninetyeast Ridge rocks are enriched in rare earth (RE) and large ion lithophile (LIL) elements and Sr isotopes (0.7043-0.7049), similar to alkali basalts and tholeiites from seamounts and islands, but different from LIL-element-depleted tholeiitic volcanic rocks of the recent seismic mid-Indian oceanic ridge. The constancy of 87Sr/86Sr ratios for basalts and andesites is compatible with a model involving fractional crystallization of mafic magma. The variation of 87Sr/86Sr ratios between 0.97 and 2.79 may possibly be explained in terms of a primordial hot mantle and/or chemically contrasting heterogeneous mantle source layers relatively undepleted in LIL elements at different periods in the geologic past. In general, the Sr isotopic data for rocks from different tectonic environments are consistent with a "zoning-depletion model" with systematically arranged alternate alkali-poor and alkali-rich layers in the mantle beneath the Indian Ocean.
    Keywords: 22-214; 22-215; 22-216; Caesium; Cerium; Chromium; Copper; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Emission spectrometry; Europium; Event label; Glomar Challenger; Indian Ocean//BASIN; Indian Ocean//RIDGE; Lanthanum; Lanthanum/Samarium ratio; Lanthanum/Ytterbium ratio; Leg22; Nickel; Potassium; Potassium/Caesium ratio; Potassium/Rubidium ratio; Rock type; Rubidium; Samarium; Sample code/label; Strontium-87/Strontium-86 ratio; Terbium; Vanadium; Ytterbium
    Type: Dataset
    Format: text/tab-separated-values, 158 data points
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Comparative Biochemistry and Physiology -- Part B: Biochemistry and 82 (1985), S. 283-285 
    ISSN: 0305-0491
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 2438-2438 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: In the field of material sciences, it has long been desired to develope the equipment to obtain crystallographic information of micrometer-size crystalline substances. Synchrotron radiation (SR) could be a candidate to deal with such a small specimen other than electron microscope. It seems more advantageous to utilize SR from the viewpoint that the processing of the diffraction data that has already been established for identification of the materials, structure analysis, and refinement. Even in the case of SR, special care should be taken for the measurement of very weak diffracted intensities. In the case not using SR, the size of 50 μm might be the limit for the specimen to be examined by the diffraction method. The diffracted intensity is proportional to the volume of the specimen, and that of micrometer-size crystal is estimated as 10−5 times of that of the limit mentioned above. The noise level of the experiment, therefore, should be as low as possible. If the noise level becomes negligibly small, the signal could be accumulated continually to the desired intensity level by adjusting measuring time. The experiment, for the purpose, should be carried out in vacuum with the stational crystal method and with very narrow collimated x-ray beams.The Laue method is employed by the above reason, as well as the fact that the intensity of each Bragg reflection on a reciprocal row passing through the origin of the reciprocal space is superposed with each other, which also intensifies a diffraction spot on the photographic plate. The Laue camera is set up at BL-4B of Photon Factory, sealed in vacuum and installed with a very narrow collimater. The development of the system has been performed to the level which several Bragg reflections of molybdenum single crystal with 0.8 μm in its diameter can be taken on the imaging plate for 50-min exposure with ring current from 128 to 125 mA. The origin of diamonds in meteorites has been a controversy as to whether they are formed from carbonaceous materials by impact shock or directly formed from vapor. Recent discovery of vapor-growth diamonds in carbonaceous chondrites has generated a renewed interest in the origin of ureilite diamonds. Two types of micrometer-size diamonds were prepared. One of them was grown under low pressure by chemical vapor deposition (CVD) from gaseous mixtures of H2 and CH4, and another was synthesized by shock effect (kindly offered by Nippon Oil & Fats Co., Ltd.) The micro-Laue method was applied to them in order to get information about their microstructures. Two characteristics are recognized in profiles of reflections themselves and in whole patterns of the Laue photographs. The reflections of CVD diamonds are elongated but symmetric in their profiles and are distributed regularly as they are indexed by the diamond lattice, while those of shock effect are also elongated and asymmetric, and are distributed at random as they cannot be indexed. The characteristics observed by the method may be useful to ascribe the origin to CVD or shock effect.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Earth and Planetary Science Letters 19 (1973), S. 29-36 
    ISSN: 0012-821X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0277-5387
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0277-5387
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    FEBS Letters 329 (1993), S. 35-39 
    ISSN: 0014-5793
    Keywords: Bacterial expression ; Epoxidation ; Hyoscyamine 6β-hydroxylase ; Scopolamine
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1573-4986
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    Publication Date: 1998-05-12
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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