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  • Bocconia cordata  (2)
  • Chemical Engineering  (2)
  • differential capillary-rise method  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Protopine-N-oxide, an alkaloid from Bocconia cordata
    Amsterdam : Elsevier
    Phytochemistry 22 (1983), S. 627-628 
    Details
    ISSN: 0031-9422
    Keywords: Bocconia cordata ; Papaveraceae ; alkaloids ; protopine-type N-oxide.
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(83)83076-3
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Protopine-N-oxide, an alkaloid from Bocconia cordata
    Amsterdam : Elsevier
    Phytochemistry 22 (1983), S. 627-628 
    Details
    ISSN: 0031-9422
    Keywords: Bocconia cordata ; Papaveraceae ; alkaloids ; protopine-type N-oxide
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0031-9422(83)83076-3
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Experimental surface tensions for HFC-32, HCFC-124, HFC-125, HCFC-141b, HCFC-142b, and HFC-152a (1995)
    Springer
    International journal of thermophysics 16 (1995), S. 791-800 
    Details
    ISSN: 1572-9567
    Keywords: differential capillary-rise method ; HFC-32 ; HCFC-124 ; HFC-125 ; HCFC-141b ; HCFC-1426 ; HFC-152a ; refrigerants ; surface tension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The surface tension of six alternative refrigerants, i.e., HFC-32 (CH, F, ). HCFC-124 (CHClFCF,), HFC-125 (CHF2CF3). HCFC-14lb ICH,CCI,F). HCFC-142b (CH3CCIF2), and HFC-152a (CH3CHF2), has been measured in the present study. The measurements were conducted under equilibrium conditions between the liquid and its saturated vapor. The differential capillary-rise method (DORM) used two glass capillaries, with inner radii of 0.3034 ± 0.0002 and 0.5717 ±0.0002 mm, respectively. Temperatures in the range from 270 to 340 K were considered. The accuracy of surface tension measurements is estimated to be within ±0.2 mN · m−1. The temperatures are accurate to within ±20 mK. The temperature dependence of the resultant data were successfully represented by van der Waals' correlations to within ±(1.1 mN m−1 for each substance. Available surface tension data are compared with the present data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01438864
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Surface Tension of HFC Refrigerant Mixtures (1999)
    Springer
    International journal of thermophysics 20 (1999), S. 119-127 
    Details
    ISSN: 1572-9567
    Keywords: differential capillary-rise method ; mixtures ; R-410A ; R-410B ; R-407C ; R-404A ; R-507 ; refrigerants ; surface tension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The surface tension of refrigerant mixtures, i.e., R-410A (50 mass% R-32/50 mass% R-125), R-410B (45 mass% R-32/55 mass% R-125), R-407C (23 mass% R-32/25 mass% R-125/52 mass% R-134a), R-404A (44 mass% R-125/52 mass% R-143a/4 mass% R-134a), and R-507 (50 mass% R-125/50 mass% R-143a), has been measured and correlated in the present study. Although the first three mixtures are very important as promising replacements for R-22 in air-conditioners and heat-pumps and the last two are promising replacements for R-502, surface tension data for these mixtures were not previously available. The measurements were conducted under conditions of coexistence of the sample liquid and its saturated vapor in equilibrium. The differential capillary rise method (DCRM) was used, with two glass capillaries with inner radii of 0.3034±0.0002 and 0.5717±0.0002 mm. The temperature range covered was from 273 to 323 K, and the uncertainty of measurements for surface tensions and temperatures is estimated to be at most ±0.2 mN·m−1 and ±20 mK, respectively. A mixing rule was selected for representing the temperature dependence of the resultant data. These data were successfully represented by a mixing rule using mass fraction based on the van der Waals correlation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021482231102
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Static and kinetic studies of polystyrene/poly(vinylmethylether) blends (1986)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 26 (1986), S. 3-8 
    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: A systematic study of static and kinetic phase behavior of deuterated polystyrene/poly(vinylmethylether) blends is presented in this paper. The static properties are studied by the small angle neutron scattering techniques and the kinetics of phase decomposition are studied by the temperature jump light scattering; technique. This procedure provides detailed information about phase behavior with regard to both thermodynamics and kinetics.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760260104
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Phase decomposition phenomena in polystyrene/(polyvinylmethylether) (1986)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 26 (1986), S. 1208-1212 
    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 paper reports studies on polystyrene/poly-(vinylmethylether) blends to elucidate phase decomposition phenomena. Small angle neutron scattering (SANS) and temperature jump light scattering (TJLS) techniques were used to study both static and kinetic properties. The SANS methods were used to characterize the blends with respect to phase diagram, the Flory-Huggins interaction parameter, and the critical fluctuation length as a function of temperature. From the TJLS experiments, we have demonstrated the possibility of two kinds of phase decomposition mechanisms which should lead to distinct morphology and material properties.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760261708
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    Paper (German National Licenses)
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