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  • Wiley-Blackwell  (9)
  • Springer  (7)
  • American Chemical Society  (4)
  • 1985-1989  (20)
  • 1
    Electronic Resource
    Electronic Resource
    Amidine for extraction and spectrophotometric determination of niobium(V) in the presence of thiocyanate (1986)
    s.l. : American Chemical Society
    Analytical chemistry 58 (1986), S. 192-194 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac00292a046
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  • 2
    Electronic Resource
    Electronic Resource
    Extraction and spectrophotometric determination of gold(III) by use of amides and amidines (1986)
    s.l. : American Chemical Society
    Analytical chemistry 58 (1986), S. 1547-1551 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac00298a062
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  • 3
    Electronic Resource
    Electronic Resource
    Extraction and atomic-absorption spectrophotometric determination of gold in low-grade ores with amidine (1986)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 323 (1986), S. 494-495 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00470771
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  • 4
    Electronic Resource
    Electronic Resource
    Morphology of solution crystallized trans-1,4-polyisoprene (1987)
    Springer
    Colloid & polymer science 265 (1987), S. 592-596 
    Details
    ISSN: 1435-1536
    Keywords: Morphology ; crystallization ; singlecrystal ; trans-1 ; 4-polyisoprene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The film formation method has been successfully used to grow single crystals and other complex morphological features of low melting form (LMF) and high melting form (HMF) of trans-1,4-polyisoprene (TPIP). Below 40 °C dilute amyl acetate solution gave hexagonal shaped LMF crystals. Thick and elongated hexagonal shaped morphology was shown by HMF crystals at temperatures above 40 °C. Straight faces and sharp corners of the single crystals, and also of complex crystals, acquired round shapes when highly polydispersed TPIP was used for crystallization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412774
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  • 5
    Electronic Resource
    Electronic Resource
    Some aspects of the magnetic susceptibility of ferroelectric magnesium hydrogen phosphate crystals (1989)
    Springer
    Journal of materials science 8 (1989), S. 1391-1392 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00720197
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis and study of the chelating properties of 3-carboxy-4-hydroxyacetophenone-formaldehyde resins (1988)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 160 (1988), S. 175-186 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: 3-Carboxy-4-hydroxyacetophenon (CHAP) wurde in verschiedenen Mengenverhältnissen mit Formaldehyd unter Verwendung von Alkali als Katalysator polykondensiert. Die erhaltenen Polykondensate (CHAP-F) wurden durch Elementaranalyse, IR-Spektroskopie, Bestimmung des Zahlenmittels der Molmasse (M̄n), Thermogravimetrie und Bestimmung der Grenzviskosität charakterisiert. Es wurden polymere Metallchelate mit Cu2+ -, Fe3+ -, Co2+ -, Ni2+ - und UO2+2 -Ionen hergestellt und charakterisiert. Mit Hilfe der Batch-Austauschmethode wurden Ionenaustauschereigenschaften eines CHAP-F Harzes gegen Fe3+ - Cu2+ - und Ni2+ -Ionen bestimmt.
    Notes: 3-Carboxy-4-hydroxyacetophenone (CHAP) was polycondensed with various proportions of formaldehyde using alcoholic alkali as catalyst. The resin samples, designated as CHAP-F, have been characterized by elemental analyses and IR spectroscopy, by estimation of their number average molecular weights (M̄n), by measurement of intrinsic viscosity, and by TGA. Polymeric metal chelates of one CHAP-F sample with Cu2+, Fe3+, Co2+, Ni2+, and UO22+ ions have been prepared and characterized.Ion-exchanging properties of one CHAP-F resin sample for Fe3+, Cu2+, and Ni2+ metal ions are studied by the application of the batch-equilibration method.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1988.051600114
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  • 7
    Electronic Resource
    Electronic Resource
    Polyethers. I. Polyethers from 2,4-dichloroquinolines and alkylene diols (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 36 (1988), S. 561-566 
    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: Polyethers are prepared by condensing, respectively, 2,4-dichloroquinoline and its 6-methyl and 6-methoxy derivatives separately with ethylene, propylene, butylene, diethylene and triethylene glycols. These polyethers are characterized and the electrical conductivity of polyethers is measured at various temperatures up to 150°C.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1988.070360309
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  • 8
    Electronic Resource
    Electronic Resource
    Comparison of air warming in the human airway with a thermodynamic model (1988)
    Springer
    Medical & biological engineering & computing 26 (1988), S. 628-632 
    Details
    ISSN: 1741-0444
    Keywords: Airway model ; In vivo air temperature ; Respiratory convective heat transfer ; Respiratory heat loss
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Airway cooling and drying has been proposed as a mechanism of exercise-induced asthma. Of interest in understanding the role of respiratory heat loss are the airway zones enduring the principal cooling and drying stresses. We have compared the axial rise in air temperature in the upper respiratory tract of asthmatics with that occurring in a laminar airflow steady-state model of convective heat transfer. The latter allowed an assessment of the contribution of airway geometry to the overall air warming process and gave some indication of the likely in vivo air temperature during hyperventilation, which due to the nature of our patients we could not measure directly. In vivo measurements were performed during a fibre-optic bronchoscopy. Eleven patients (67 years ±0·76) inhaled ambient air (23·2°C) and cold air (−17·5°C) nasally at a ventilation of 10 l min−1. During cold air inhalation the air temperature of the pharynx was 32·7°C (1·0) and at the third-generation bronchi 37°C (0·5), whereas with ambient air these were 35·8°C (0·8) and 37·7°C (0·6), respectively. For the same inspired ambient air condition the corresponding air temperatures in the thermodynamic model were approximately 27°C and 32°C. The axial rise in air temperature in both the model and in vivo state were characterised by a rapid early warming phase regardless of airflow rate. We conclude that the region proximal to the pharynx will endure the most severe cooling during a hyperventilation challenge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02447502
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  • 9
    Electronic Resource
    Electronic Resource
    Thermal behaviour of starches and their graft copolymers with polyacrylonitrile (1987)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 150 (1987), S. 45-64 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es wurde das thermische Verhalten von 12 verschiedenen Stärken und ihren Pfropfcopolymeren mit Polyacrylnitril (PAN) aus dem nativen und gelierten Zustand mit Hilfe der Differentialkaloriemetrie (DSC) und der Rasterelektronenmikroskopie (REM) untersucht. Alle Stärken wiesen zwei endotherme Peaks bei etwa 65 und 260°C und einen exothermen Peak bei ca. 335°C auf. Das Pfropfcopolymere aus nativer Stärke zeigt einen schwachen endothermen Peak um 65°C und einen exothermen bei 300°C, während gelierte Stärke den charakteristischen exothermen Peak von Polyacrylnitril bei 250°C zusammen mit dem exothermen Peak des Propfproduktes bei 300°C aufweist. Um die endothermen Peaks der Stärke bei 65 und 265°C aufzuklären, wurden REM Untersuchungen durchgeführt. Der erste Peak läßt sich durch Dehydratation beim Erhitzen erklären, während der zweite dem Aufschmelzen von Kristalliten in der Stärke zuzuschreiben ist. Eine spezifische Eigenschaft der Hülsenfruchtstärken ist das Festhalten von Feuchtigkeit, selbst wenn sie im gelierten Zustand gepfropft wurden.
    Notes: Thermal behaviour of twelve different starches and their graft copolymers with polyacrylonitrile (PAN) from granular and gelatinized state, has been examined by differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). All the starches exhibit two endotherms around 65 and 260°C and an exotherm around 335°C. The graft copolymer from granular starch shows a weak endotherm around 65°C and an exotherm around 300°C, while gelatinized starch exhibits the characteristic exotherm of PAN at about 250°C along with the exotherm of graft product at 300°C. Scanning electron microscopic studies were carried out to explain the endotherms of starch at 65°C and 265°C. The former one may be due to heat of dehydration while the latter one is attributed to the fusion of crystallites in the starch. Legumine starches seem to have a specific property of retaining moisture even if they are grafted in gelatinized state.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1987.051500105
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  • 10
    Electronic Resource
    Electronic Resource
    A simple method for evaluation of molar volumes Vu and V1 for polymer-diluent systems (1985)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 132 (1985), S. 161-167 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es wird eine einfache Methode zur Auswertung des Molvolumens der Repetiereinheit Vu eines Polymeren und dem des Lösungsmittels beschrieben, die zur Bestimmung der thermodynamischen Parameter für das System Polymeres-Lösungsmittel verwendet wird. Die thermodynamischen Parameter, die unter Verwendung dieser Werte berechnet wurden, stehen in guter Übereinstimmung mit Literaturwerten.
    Notes: A simple method for the evaluation of the molar volume of the repeating unit Vu of a polymer and that of the diluent used for determining the thermodynamic parameters from the fusion of polymer-diluent systems has been reported. The thermodynamic parameters calculated using these values are in fairly good agreement with those reported in the literature.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1985.051320112
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