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  • 1
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    (Table 1) Concentrations and isotopic ratios of sulfur and carbon in acid conglomerates from DSDP Hole 57-439
    PANGAEA
    In:  Supplement to: Sakai, Hitoshi; Ueda, Akira (1980): Sulfur and carbon isotope ratios of dacite and rhyolite conglomerates from Site 439, Leg 57, Deep Sea Drilling Project. In: Scientific Party, Initial Reports of the Deep Sea Drilling Project, 56/57 (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 56-57, 1285-1288, https://doi.org/10.2973/dsdp.proc.5657.161.1980
    Details
    Publication Date: 2023-06-27
    Description: The sulfur content of one rhyolite and four dacite conglomerates was found to be low - from 9 to 97 ppm - similar to that of Quaternary andesites and basalts of the Japanese Islands. However, the d34S values of these samples are unexpectedly high - +23 to +35 per mill - relative to troilite from the Canon Diablo meteorite. The sulfide/sulfate ratios vary among the five samples from 0 to 13. No significant isotope fractionation seems to exist between sulfate and sulfide sulfurs. Carbon in these samples is predominantly in the form of carbonate (and probably CO2). It ranges in concentration from 128 to 721 ppm and in d13C from -2.5 to -20.7 per mill relative to PDB.
    Keywords: 57-439; Carbon dioxide; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Leg57; North Pacific/TRENCH; Rock type; Sample code/label; Sample ID; see reference(s); Sulfur, total; Sulfur in sulfate; Sulfur in sulfide; δ13C; δ13C, carbonate; δ34S, sulfate; δ34S, sulfide; δ34S, total
    Type: Dataset
    Format: text/tab-separated-values, 67 data points
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    DATA PANGAEA
  • 2
    Electronic Resource
    Electronic Resource
    Host-dependent optical transitions of Er3+ ions in lead–germanate and lead-tellurium-germanate glasses (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 8906-8913 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Differential scanning calorimetry, Raman scattering, optical absorption, and upconversion of infrared to green luminescence have been studied for Er3+-doped lead-germanate glass 55GeO2⋅20PbO⋅10BaO⋅10ZnO⋅5K2O (GPBZK) and lead-tellurium-germanate glass 30GeO2⋅30PbO⋅30TeO2⋅10CaO (GPTC). Judd–Ofelt intensity parameters of Er3+ in the two host glasses were determined and used to calculate radiative transition rates and lifetimes. Values of the radiative quantum yield of the 4S3/2→4I15/2 transition and the infrared (797 nm) to green (547 nm) upconversion efficiency of Er3+ were obtained. It has been found that the 4S3/2→4I15/2 radiative transition rate of Er3+ in GPTC glass is about twice that in the GPBZK glass and the upconversion efficiency in the GPTC glass is about four times larger than that in the GPBZK glass. These host-dependent properties are mainly attributed to the enhanced local field and the reduced multiphonon rate in lead-tellurium-germanate glass compared to lead-germanate glass. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362621
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  • 3
    Electronic Resource
    Electronic Resource
    Microphenocrystic pyrrhotite from dacite rocks of Satsuma-Iwojima, southwest Kyushu, Japan and the solubility of sulfur in dacite magma (1981)
    Springer
    Contributions to mineralogy and petrology 78 (1981), S. 21-26 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Microphenocrystic pyrrhotites were observed in the glassy groundmass of two dacite rocks from Satsuma-Iwojima, southwest Kyushu, Japan. It suggests that the dacite magma was saturated with respect to pyrrhotite at the time of eruption, and thus the sulfur contents in the groundmass can be taken as the solubility of sulfur in the dacite magma. The solubility of sulfur in the dacite rocks thus calculated is 65 to 72 ppm sulfur at the estimated conditions of T=900±50°C, $$f_{{\text{O}}_{\text{2}} } = 10^{ - 12 \pm 1}$$ and $$f_{{\text{S}}_{\text{2}} } = 10^{ - 0.6 \pm 0.6}$$ atm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00371140
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  • 4
    Electronic Resource
    Electronic Resource
    Chemical and isotopic evidence of thermochemical sulphate reduction by light hydrocarbon gases in deep carbonate reservoirs (1988)
    [s.l.] : Nature Publishing Group
    Nature 333 (1988), S. 415-419 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Large H2S accumulations in deep carbonate reservoirs have been attributed to thermochemical sulphate reduction. Although organic matter has been invoked as the reducing agent, individual reactants in specific environments have hitherto not been identified. Carbon isotope data reveal that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/333415a0
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  • 5
    Electronic Resource
    Electronic Resource
    Sensitization of gas-phase protein sequencer using fluorescein isothiocyanate FITC (1992)
    Springer
    The protein journal 11 (1992), S. 359-359 
    Details
    ISSN: 1573-4943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01673710
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  • 6
    Electronic Resource
    Electronic Resource
    Instrumentation and applications of a novel C-terminal peptide fragment fractionator (1992)
    Springer
    The protein journal 11 (1992), S. 365-365 
    Details
    ISSN: 1573-4943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01673719
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  • 7
    Electronic Resource
    Electronic Resource
    Diels-Alder reaction of a trace amount of styrene with cyclopentadiene in a liquid phase (1981)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 182 (1981), S. 1669-1677 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: With the intention to prove the possibility of applying the Diels-Alder reaction to trap a trace amount of residual styrene monomer in polystyrene, a model reaction between cyclopentadiene with styrene in a dilute o-chlorobenzene solution was carried out. In the presence of an excess amount of dicyclopentadiene, the consumption of styrene was measured with time lapse by means of gaschromatography. At temperatures ranging from 140 to 220°C, the amount of styrene was observed to decrease remarkably until it reached an equilibrium concentration. The higher the temperature was, the higher the equilibrium concentration became. The equilibrium constants at each temperature and the activation energy for the reaction were calculated.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1981.021820607
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  • 8
    Electronic Resource
    Electronic Resource
    Block copolymers derived from azobiscyanopentanoic acid. XI. Properties of silicone-PMMA block copolymers prepared via polysiloxane(azobiscyanopentanamide)s (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 35 (1988), S. 2039-2051 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Mechanical, thermal, and surface properties of poly(dimethylsiloxane)-poly(methyl methacrylate) block copolymers (PDMS-b-PMMA) prepared by the use of polysiloxane(azobiscyanopentanamide)s were intensively investigated. The mechanical strength of block copolymers was found to decrease with an increase of siloxane contents. Dynamic mechanical analysis (DMA) of block copolymers having long siloxane chain length (SCL) and high siloxane content revealed the existence of two glass transitions attributable to microphase separation of two segments. Differential scanning calorimetry (DSC) also gave some evidence of microphase separation supporting the DMA results. It was observed that the incorporation of PDMS segments in block copolymers improved thermal stability of PMMA, as confirmed by thermogravimetric analysis. Surface analysis of the block copolymers films cast from several solutions indicated surface accumulation of PDMS segments, as revealed by water contact angle and ESCA measurements.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1988.070350805
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  • 9
    Electronic Resource
    Electronic Resource
    Block copolymers derived from azobiscyanopentanoic acid. VI. Synthesis of a polyethyleneglycol-polystyrene block copolymer (1986)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 24 (1986), S. 405-418 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Polycondensations were carried out between azobiscyanopentanoly chloride (ACPC) and polyethyleneglycols (PEG) having average molecular weight of 600, 2000, 8400, and 21,500, resulting in the chain extended PEG of several times the original polymer chain length and containing scissile —N=N— units of azobiscyanopentanoic acid (ACPA). The poly(polyethyleneglycol-azobiscyanopentanoate), designated as \documentclass{article}\pagestyle{empty}\begin{document}$\rlap{--} (PEG\rlap{--} )_n^*$\end{document} were thermally decomposed in the presence of styrene (St) to obtain PEG-PSt block copolymers. The amount of St consumed was proportional to [—N=N—]0.5 and [St]1.2, whereas the chain length of the PSt segment was proportional to [—N—N—]-0.5 and [St]0.8.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1986.080240302
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  • 10
    Electronic Resource
    Electronic Resource
    Macro-azo-initiators composed of various polyesters: Their syntheses, thermal properties, and application to block copolymerization (1994)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 32 (1994), S. 2641-2652 
    Details
    ISSN: 0887-624X
    Keywords: macro-azo-initiators ; radical polymerization ; block copolymerization ; polyester-b-polystyrene ; polyester-b-poly (methylmethacrylate) ; polycaprolactone-b-polystyrene ; poly (aliphatic carbonate)-b-polystyrene ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Various aliphatic polyesters such as poly (ethyleneadipate), poly (tetramethylene adipate), poly (caprolactone), and poly (carbonate) were condensed with 4,4'-azobis-4-cyanopentanoyl chloride to prepare macro-azo-initiators. Their thermal properties, observed by differential scanning calorimetry, showed similar decomposition behavior to each other. Block copolymers containing each of these polyesters as a block segment combined with polystyrene or poly (methylmethacrylate) have been derived by the polymerization of monomers initiated with these macro-azo-initiators. © 1994 John Wiley & Sons, Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1994.080321405
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