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  • 1
    Electronic Resource
    Electronic Resource
    Viscosity of Gaseous HFC-134a (1,1,1,2-Tetrafluoroethane) Under High Pressures (1998)
    Springer
    International journal of thermophysics 19 (1998), S. 1285-1295 
    Details
    ISSN: 1572-9567
    Keywords: HFC-134a ; Lennard–Jones potential ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The viscosity of gaseous HFC-134a (1,1,1,2-tetrafluoroethane) was measured with an oscillating disk viscometer of the Maxwell type from 298.15 to 398.15 K at pressures up to 5.5 MPa. Intermolecular potential parameters for the Lennard–Jones 12-6 model were determined from the viscosity data at 0.1 MPa. The viscosity equation developed by Krauss et al. was applied to correlate the present viscosity data. In addition, the correlations proposed by Stiel and Thodos and by Lee and Thodos were tested for fitting the experimental viscosity data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021919215793
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  • 2
    Electronic Resource
    Electronic Resource
    Viscosity of nitrous oxide in the critical region (1994)
    Springer
    International journal of thermophysics 15 (1994), S. 603-626 
    Details
    ISSN: 1572-9567
    Keywords: critical anomaly ; mode-coupling theory ; nitrous oxide ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The gaseous viscosity of nitrous oxide (N2O) was measured in the critical region. The experimental temperature range was between 309.650 and 318.150 K and the pressure range was up to 9.6 MPa. The measurements were obtained with an oscillating-disk viscometer, combined with local determination of the density at the position of the oscillating disk, and they have an estimated accuracy of 0.6 % for viscosity and 0.5 % for gas density. The viscosity of N2O exhibits an anomalous increase near the critical point. The anomalous increase in viscosity was analyzed with the viscosity equation proposed by Basu and Sengers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01563790
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  • 3
    Electronic Resource
    Electronic Resource
    Viscosity of Gaseous HFC-143a (1,1,1-trifluoroethane) Under High Pressures (1999)
    Springer
    International journal of thermophysics 20 (1999), S. 435-443 
    Details
    ISSN: 1572-9567
    Keywords: corresponding states ; HFC-143a ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The viscosity of gaseous HFC-143a(1,1,1-trifluoroethane) was measured with an oscillating-disk viscometer of the Maxwell type at temperatures from 298.15 to 423.15 K and at pressures up to the saturated vapor pressure at each temperature under subcritical conditions or up to 9 MPa under supercritical conditions. Intermolecular potential parameters of HFC-143a for the extended corresponding states were determined from the viscosity data at 0.1 MPa. An empirical viscosity equation as functions of temperature and density is proposed to interpolate the present experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022696702673
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  • 4
    Electronic Resource
    Electronic Resource
    Viscosity of Gaseous HFC-125 (Pentafluoroethane) Under High Pressures (1999)
    Springer
    International journal of thermophysics 20 (1999), S. 445-453 
    Details
    ISSN: 1572-9567
    Keywords: corresponding states ; HFC-125 ; oscillating-disk viscometer ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper reports experimental results lor the viscosity of gaseous HFC-125 (pentafluoroethane) under high pressures. The measurements were carried out with an oscillating-disk viscometer of the Maxwell type at temperatures from 298.15 to 423.15 K and at pressures up to the saturated vapor pressures at each temperature at subcritical conditions or up to 9 MPa at supercritical temperatures. Intermolecular scaling parameters of HFC-125 for the extended corresponding states were determined from the viscosity data at 0.1 MPa. An empirical viscosity equation is proposed to interpolate the present experimental results as a function of temperature and density.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022648819511
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  • 5
    Electronic Resource
    Electronic Resource
    Viscosity of Gaseous HCFC-123 (2,2-Dichloro-1,1,1-Trifluoroethane) in the Temperature Range from 323.15 to 423.15 K and at Pressures up to 2 MPa (2000)
    Springer
    International journal of thermophysics 21 (2000), S. 695-701 
    Details
    ISSN: 1572-9567
    Keywords: HCFC-123 ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The viscosity of gaseous HCFC-123 (2,2-dichloro-1,1,1-trifluoroethane) was measured with an oscillating-disk viscometer of the Maxwell type at temperatures from 323.15 to 423.15 K and at pressures up to the saturated vapor pressure at each temperature in subcritical conditions or up to 2 MPa under supercritical conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006641502777
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  • 6
    Electronic Resource
    Electronic Resource
    Three-phase carboxylation reactions of poly(chloromethylstyrene) beads with sodium nitrite (1987)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 188 (1987), S. 1383-1389 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The formation of carboxylic acid groups (carboxyl + ester groups) was found in a threephase reaction of crosslinked poly(chloromethylstyrene) beads with an excess amount of sodium nitrite in immiscible solvents of benzene and water with tetrabutylammonium bromide as a phase transfer catalyst (PTC), and the dependence of carboxylic acid yield on the experimental conditions was studied. The product contains hydroxyl groups and ester bonds besides carboxyl groups. It was tentatively considered that the carboxyl groups are produced by direct oxidation of chloromethylstyrene groups by nitrous anions. Nitrous anions do not only act as a nucleophile but also as an oxidative reagent in this case.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1987.021880614
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  • 7
    Electronic Resource
    Electronic Resource
    Characteristic viscoelastic parameters for amorphous polymers (1963)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 7 (1963), S. 1341-1347 
    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: By use of a reference value of modulus equal to 109 dynes/cm.2 and a reference value of time equal to 10 sec., characteristic viscoelastic parameters are defined from stress relaxation master curves and from modulus-temperature curves. Values of these parameters are tabulated for several linear amorphous polymers and slightly crosslinked amorphous polymers.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1963.070070414
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  • 8
    Electronic Resource
    Electronic Resource
    Analysis of crude drugs by pyrolysis gas chromatography (1985)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 8 (1985), S. 360-361 
    Details
    ISSN: 0935-6304
    Keywords: Pyrolysis gas chromatography ; Fused silica open tubular column ; Crude drugs ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240080708
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  • 9
    Electronic Resource
    Electronic Resource
    Preparation of amidinourea from hydroxymethyl cyanoguanidine: a model reaction of cyanoguanidine resin (1993)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 4 (1993), S. 561-563 
    Details
    ISSN: 1042-7147
    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
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pat.1993.220040906
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  • 10
    Electronic Resource
    Electronic Resource
    Properties of RecA-oligonucleotide complexes (1994)
    Chicester [u.a.] : Wiley-Blackwell
    Journal of Molecular Recognition 7 (1994), S. 199-206 
    Details
    ISSN: 0952-3499
    Keywords: RecA ; Homologous recombination ; DNA-protein complexes ; Isoelectric focusing ; Linear dichroism ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The interaction of RecA protein with short single-stranded oligonucleotides is characterised by flow linear dichroism (LD), isoelectric focusing (IEF) and electron microscopy (EM). From LD and EM it is evident that RecA forms long filaments with at least some 50 oligonucleotides in a ‘train formation’. The tendency to form trains is substantially lower when an amino group is attached to the 5′ end of the oligonucleotide, suggesting that the modification impairs protein-protein interactions at the interface between two oligomers. From LD it is also evident that no bridging occurs between RecA-Oligonucleotide complexes containing more than one oligomer strand per RecA filament. This property make them manageable in polyacrylamide gels, hence allowing characterisation by IEF. RecA was found acidic with a pI of 5.0. The pI was not dependent on the presence of bound cofactor (ATPγS) and oligonucleotides suggesting that protonation of the protein readily occurs to compensate for the negative charges provided by bound cofactor and DNA.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmr.300070307
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