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  • Oxford University Press  (18)
  • Wiley-Blackwell  (8)
  • Canadian Science Publishing
  • 2015-2019  (15)
  • 2000-2004  (5)
  • 1960-1964  (8)
  • 1940-1944
  • 1930-1934
  • 1
    Electronic Resource
    Electronic Resource
    Über einige zweikernige Heterocyclen (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 76 (1964), S. 615-615 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.196407613163
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  • 2
    Electronic Resource
    Electronic Resource
    AlkylsilazalanesHeterosiloxanes VII. Communication VI: H. Schmidbaur and M. Schmidt. J. Amer. chem. Soc. 84, 1069 (1962). (1962)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 1 (1962), S. 327-328 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.196203271
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  • 3
    Electronic Resource
    Electronic Resource
    Condensation Reactions with Monochlorinated Trimethylsilanol (1962)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 1 (1962), S. 661-661 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.196206611
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  • 4
    Electronic Resource
    Electronic Resource
    Reactive Silyl-substituted Alkyl Sulfanes (1962)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 1 (1962), S. 660-660 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.196206602
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  • 5
    Electronic Resource
    Electronic Resource
    Thiolyse von Sulfurylchlorid (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 330 (1964), S. 130-140 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The reaction of hydrogen sulfide with sulfuryl chloride in the ratio 2:1 leads in benzene solution to hydrogen chloride, water, sulfur, and disulfur monoxide, S2O, which is surprisingly stable under the prevailing conditions. The reaction of sulfuryl chloride with liquid hydrogen sulfide leads to the formation of sulfanes and chlorosulfanes, respectively, besides other products, depending on the molar ratio H2S:SO2Cl2.
    Notes: Schwefelwasserstoff reagiert mit Sulfurylchlorid beim molaren Einsatz 2:1 in benzolischer Lösung unter Bildung von Chlorwasserstoff, Wasser, Schwefel und Dischwefelmonoxid S2O, das unter den herrschenden Reaktionsbedingungen überraschend stabil ist. Mit flüssigem Schwefelwasserstoff bildet SO2Cl2 im Unterschuß u. a. Sulfane, im Überschuß Chlorsulfane.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19643300304
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  • 6
    Electronic Resource
    Electronic Resource
    Versuche zur Trennung von Sulfan-disulfonaten mit Hilfe von Anionenaustauschern (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 330 (1964), S. 188-194 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The separation of sulfane-disulfonates, sulfite and thiosulfate by anion-exchangers has been studied. Whereas K2S6O6 is decomposed on the column, the salts K2S3O6, K2S4O6 and K2S5O6 may be separated quantitatively.
    Notes: Die Trennung von Sulfan-disulfonaten, Sulfit und Thiosulfat mit Anionenaustauschern wird untersucht. Während K2S6O6 auf der Säule zu rasch zerfällt, lassen sich die Salze K2S3O6, K2S4O6 und K2S5O6 quantitativ voneinander trennen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19643300311
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  • 7
    Electronic Resource
    Electronic Resource
    Über die Reaktion von Jodwasserstoff mit elementarem Schwefel (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 330 (1964), S. 122-129 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The reaction S + 2 HJ → H2S + J2 of S8 solutions in CCl4 is very slow, but is accelerated very much in the case of S6 or Sx* (formed by splitting of S8 rings under the influence of light). A simultaneous determination of content and oxidation state of sulfur in mixtures of sulfur compounds with elemental sulfur by the “HJ method” therefore is only possible if the elemental sulfur is present in the S8 form and if the violet and ultraviolet part of the spectrum is excluded during the experiment.
    Notes: In CCl4 gelöster S8-Schwefel reagiert mit HJ nur sehr langsam nach S + 2 HJ → H2S + J2. Diese Reaktion verläuft dagegen mit S6 bzw. mit den durch Lichteinfluß erzeugten Spaltprodukt des S8-Ringes, Sx*, rasch, weshalb die „Jodwasserstoffmethode“ zur Ermittlung des Gehaltes und der Oxydationsstufe von Schwefel in Gemischen des Elementes mit seinen Verbindungen nur dann anwendbar ist, wenn unter Ausschluß des violetten und ultravioletten Anteils des Spektrums gearbeitet wird und der elementare Schwefel in seiner energieärmsten Form, also als S8-Molekel, vorliegt.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19643300303
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  • 8
    Electronic Resource
    Electronic Resource
    Zur Identität der aus Thioschwefelsäure mit Dichlordisulfan und aus Thioschwefelsäure mit salpetriger Säure hergestellten Tetrasulfandisulfonate und zur Existenz eines „Saueren“ Tetrasulfan-disulfonats (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 330 (1964), S. 179-187 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The product prepared following the method of GOEHRING and FELDMANN from H2S2O3 and S2Cl2 is not a „spectrum“ of different salts as stated by WEITZ and BECKER, but really K2S6O6, which is also prepared from H2S2O3 and HNO2. Tetrasulfane-disulfonate does not only exist in the neutral form K2S6O6, but also in a „acid“ form with a part of the potassium - nonstoichiometrically - replaced by H+. The two forms have different shape and X-ray spectra.
    Notes: Bei dem nach GOEHRING und FELDMANN aus H2S2O3 und S2Cl2 dargestellten Produkt handelt es sich nicht, wie von WEITZ und BECKER angegeben, um ein „Spektrum“ verschiedener Salze, sondern um einheitliches K2S6O6, wie es auch aus H2S2O3 und HNO2 erhalten wird. Tetrasulfan-disulfonat existiert neben der neutralen Form K2S6O6 noch in einer „saueren“ Form, bei der ein Teil des Kaliums - nichtstöchiometrisch - durch H+ ersetzt ist. Die beiden Formen unterscheiden sich in Aussehen und Röntgenspektrum voneinander.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19643300310
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  • 9
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    Trapped Liquid, Paleo-porosity and Formation Time Scale of a Chromitite-(Ortho)pyroxenite Cumulate Section, Bushveld, South Africa (2015)
    Oxford University Press
    Details
    Publication Date: 2015-12-25
    Description: To evaluate compaction and interstitial melt expulsion during cumulate formation, a 20 m cumulate section including the UG2 and UG3 chromitites from a 264 m drill core through the Upper Critical Zone of the Bushveld Complex (South Africa) has been studied. The cumulates in the studied section are as follows: 3 m plagioclase pyroxenite to pyroxenite, pegmatoid footwall pyroxenite at the lower contact to UG2, 0·7 m UG2 chromitite, 6·8 m pyroxenite, 0·24 m UG3 chromitite, 2·0 m plagioclase-rich pyroxenite changing locally to norite, the two 5 cm leader stringers UG3a and UG3b, and 7 m total of olivine pyroxenites grading into plagioclase pyroxenites. All pyroxenites are dominated by orthopyroxene (opx) and the cumulate sequence is topped by mottled anorthosite grading into norite. Stratigraphic concentrations of major and trace elements of 52 bulk-rock samples were determined. Bulk-rock Mg-numbers are 0·79–0·81 throughout the silicate cumulate units, and 0·40–0·46 in the chromitite layers. The stratigraphic distribution of six incompatible trace elements (K, Rb, Ba, Cs, Zr and Th) has been used to determine the amount of trapped liquid ( F TL ) or paleo-porosity in the cumulate rocks. Final porosities (volume fractions), based on averages from the six trace elements, are 0·06–0·33 in the pyroxenites. In chromitite layers, trapped melt fractions of 0·12–0·36 are calculated from incompatible trace element concentrations, but bulk SiO 2 concentrations and X-ray tomography yield 0·04–0·17 higher porosities. Hence, the bulk silicate fraction in the chromitites may not necessarily correspond to the trapped liquid fraction, as poikilitic opx was crystallizing while the silicate melt still equilibrated. Using a previously derived experiment-based model for compaction time scales, gravitationally driven chemical compaction in the UG2–UG3–pyroxenite section is calculated to occur within 1–10 years. This time frame corresponds to the times necessary to cool a 20 m layer by 10–50°C, the temperature interval argued to encompass the liquidus and almost complete solidification. Compaction within a decade can in fact easily develop the paleo-porosities indirectly observed today and is probably stopped by crystallization of the interstitial liquid. Contrary to previous assertions, melt expulsion from the cumulate pile does not hinder compaction; calculated permeabilities would allow for the migration of an order of magnitude higher amount of melt than has to be expelled from the 20 m pile of cumulate. The pegmatoid zones in the chromitite footwalls enriched in incompatible trace elements are consistent with a collection of interstitial melts expelling from the underlying compacting pyroxenites. Their entrapment below the chromitite layers suggests that these act as permeability barriers. This is in part due to their finer grain size compared with the pyroxenites, but is mainly due to the crystallization of large poikilitic opx during compaction.
    Print ISSN: 0022-3530
    Electronic ISSN: 1460-2415
    Topics: Geosciences
    Published by Oxford University Press
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  • 10
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    Coalgebraic logic programming: from Semantics to Implementation (2016)
    Oxford University Press
    Details
    Publication Date: 2016-03-30
    Description: Coinductive definitions, such as that of an infinite stream, may often be described by elegant logic programs, but ones for which SLD-refutation is of no value as SLD-derivations fall into infinite loops. Such definitions give rise to questions of lazy corecursive derivations and parallelism, as execution of such logic programs can have both recursive and corecursive features at once. Observational and coalgebraic semantics have been used to study them abstractly. The programming developments have often occurred separately and have usually been implementation-led. Here, we give a coherent semantics-led account of the issues, starting with abstract category theoretic semantics, developing coalgebra to characterize naturally arising trees and proceeding towards implementation of a new dialect, CoALP, of logic programming, characterised by guarded lazy corecursion and parallelism.
    Print ISSN: 0955-792X
    Electronic ISSN: 1465-363X
    Topics: Computer Science , Mathematics
    Published by Oxford University Press
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