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  • 1970-1974  (77)
  • 1965-1969  (67)
  • 1910-1914  (84)
  • Chemistry  (228)
  • 1
    Electronic Resource
    Electronic Resource
    Die Phthaleine des 3.5.3′.5′-Biresorcins (1911)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 44 (1911), S. 2678-2684 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19110440399
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Neubestimmung des Verhältnisses der Molekulargewichte von Kaliumchlorat und Kaliumchlorid (1911)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 71 (1911), S. 378-402 
    Details
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Ergebnisse der vorliegenden Arbeit lassen sich in folgende Punkte zusammenfassen:Es wurde 1gezeigt, dass Kaliumchlorat in einer für Atomgewichtsbestimmungen genügend reinen Form herstellbar ist.2gezeigt, dass Kaliumchlorat nicht, wie Stas angegeben hat, unzersetzt schmelzbar ist.3eine Methode zur exakten Wägung des Kaliumchlorats und anderer sich beim Schmelzen ähnlich verhaltender Stoffe angegeben.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19110710134
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  • 3
    Electronic Resource
    Electronic Resource
    Zur Kenntnis des dreiwertigen Mangans I (1913)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 81 (1913), S. 385-405 
    Details
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurde ein einfaches Verfahren zur Darstellung größerer Mengen von Kaliummanganicyanid K3Mn(CN)6 angegeben. Die Gleichgewichtsverhältnisse bei der Hydrolyse dieses Salzes in wässeriger Lösung wurden untersucht. Die Zersetzung des Kaliummanganicyanids durch vie1 heißes Wasser liefert ein Manganihydroxyd oder -oxydhydrat, das sich sehr leicht in konzentrierten Säuren unter Bildung von Manganisalzen auflöst. Das Manganihydroxyd, -oxyd- hydrat und -oxyd muß als Verbindung nur des dreiwertigen Mangans aufgefaßt werden, nicht aber als gemischte Verbindung des zwei- und des vierwertigen Mangans.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19130810128
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  • 4
    Electronic Resource
    Electronic Resource
    Eine neue Bestimmung des Atomgewichtes des Selens (1913)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 83 (1913), S. 51-96 
    Details
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Nach einer kritisch-historischen Zusammenstellung der bisher veröffentlichten Untersuchungen über das Atomgewicht des Selens wurden zur Aufklärung des Verhaltens des Selendioxyds beim Sublimieren die Dampfdruckkurven der selenigen Säure und des Selendioxyds bestimmt, woraus sich die große Schwierigkeit, wenn nicht Unmöglichkeit der Herstellung absolut wasserfreien Selendioxyds durch Umsublimieren der selenigen Säure ergibt. Es wurde weiterhin gefunden, daß das graue, kristallinische Selen in heißem Wasser unlöslich ist und in der Höhe seines Schmelzpunktes 217 einen verschwindend kleinen Dampfdruck besitzt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19130830107
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  • 5
    Electronic Resource
    Electronic Resource
    Stability of polymer composites as positive-temperature-coefficient resistors (1974)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 14 (1974), S. 706-716 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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: This is a study of materials which are positive-temperature-coefficient resistors. Such materials, composed of conductive particles dispersed in a crystalline polymeric matrix, have been found to be of limited stability. An example is carbon black in high-density polyethylene. On repeated cycling through the anomaly temperature or on extensive heating at or above the anomaly temperature, the room temperature resistivity rises and the anomaly height falls to zero. This phenomenon has been shown to be caused by the absorption of oxygen by the polymer matrix which alters the structure, reduces the crystallinity, and induces an unusual form of crosslinking of a reversible nature.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760141009
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The effect of diblock and homopolymer impurities on the morphology of triblock polymers (1972)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 16 (1972), S. 2079-2089 
    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: Commercial triblock polymers (Kratons) consisting of polystyrene and a polydiene were characterized via gel permeation chromatography and small-angle x-ray scattering in order to determine the amount of free polystyrene and diblock material and to clarify the effect of these polymeric impurities on the morphology of solvent-cast samples. Gel permeation chromatography measurements revealed the Kratons to consist of 80-85% triblock, 15-20% diblock, and trace amounts of free polystyrene. Pure triblocks, impurity-doped pure triblocks, the Kratons, and a postpolymerically degraded Kraton were examined with regard to the effect of polymeric impurities on morphology. Small amounts (〈5%) of free polystyrene induce a regularization of the glassy domains, while increased amounts of this homopolymer apparently lead to diffuse phase boundaries. The presence of diblock polymer results in a loss of macrolattice details, indicating the presence of less ordered and more diffuse glassy domains.
    Additional Material: 18 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1972.070160819
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  • 7
    Electronic Resource
    Electronic Resource
    Glass transition temperature as a guide to selection of polymers suitable for PTC materials (1973)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 13 (1973), S. 462-468 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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: It has been shown that the only way to predict the size of the PTC effect displayed by a crystalline polymer when filled with conductive particles is through the knowledge of the glass transition point of the polymer. The size of the PTC anomaly is found to decrease sharply with rise in glass transition temperature and for a polymer to be a useful PTC material its glass transition must be below 0°C. It has not been possible to explain this relationship by any of the current theories of the PTC mechanism in filled polymers.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760130611
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  • 8
    Electronic Resource
    Electronic Resource
    A correlation of the frictional characteristics for turbulent flow of dilute viscoelastic non-Newtonian fluids in pipes (1966)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 12 (1966), S. 522-525 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A formula has been determined which satisfactorily represents, for the existing data, the frictional characteristics of the turbulent flow of a dilute viscoelastic non-Newtonian fluid in a pipe. This formula contains two elastic fluid parameters, one of which is strongly dependent on both polymer solute and concentration and the other appears to be a constant and independent of the polymer solutes which were used in this report. A rheometer is proposed based on this formula which should be useful in classifying fluids of this type.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690120323
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Nonisothermal adsorption in fixed beds (1967)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 13 (1967), S. 457-465 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Removal of methane from a helium stream by adsorption on Columbia SXC activated carbon was studied experimentally and theoretically. A mathematical model for the process was developed and the governing differential equations were solved numerically. The model incorporates heat and mass transfer resistances within and around the adsorption particle. Wall effects and moderate heat loss to the surroundings are also included. The required heat and mass transfer correlations were obtained from the literature. Simple expressions were developed to determine the relative resistances for heat and mass transfer within and around the adsorption particles.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690130314
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  • 10
    Electronic Resource
    Electronic Resource
    Über das Scandium (1914)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 86 (1914), S. 257-290 
    Details
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19140860117
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    Paper (German National Licenses)
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