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  • Amaryllidaceae  (5)
  • Polymer and Materials Science  (3)
  • 79.20  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Biflorin, a chromone-C-glucoside from Pancratium biflorum
    Amsterdam : Elsevier
    Phytochemistry 22 (1983), S. 2591-2593 
    Details
    ISSN: 0031-9422
    Keywords: 5,7-dihydroxy-2-methylchromone-C"6-β-d-glucopyranoside ; Amaryllidaceae ; Pancratium biflorum ; biflorin ; chromone-C-glucoside ; roots
    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)80172-1
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  • 2
    Electronic Resource
    Electronic Resource
    Three chromones from bulbs of Pancratium biflorum
    Amsterdam : Elsevier
    Phytochemistry 21 (1980), S. 2943-2946 
    Details
    ISSN: 0031-9422
    Keywords: 5,6-dihydroxy-7-methoxy-2-methylchromone ; 5,7-dihydroxy- 2-methylchromone ; Amaryllidaceae ; Panacratium biflorum ; bulb ; gl ; polyoxygenated chromones
    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(80)85074-6
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  • 3
    Electronic Resource
    Electronic Resource
    Isocarbostyril alkaloids from Haemanthus kalbreyeri
    Amsterdam : Elsevier
    Phytochemistry 28 (1989), S. 611-613 
    Details
    ISSN: 0031-9422
    Keywords: 7-deoxypancratistatine ; Amaryllidaceae ; Haemanthus kalbreyeri ; isocarbostyril alkaloids ; pancratistatine-2-O-β-d-glucoside ; plant growth regulatory effects.
    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(89)80061-5
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  • 4
    Electronic Resource
    Electronic Resource
    Isocraugsodine, an n-arylidenephenethylamine from Crinum asiaticum and its e-z isomerism
    Amsterdam : Elsevier
    Phytochemistry 27 (1988), S. 1849-1852 
    Details
    ISSN: 0031-9422
    Keywords: Amaryllidaceae ; Crinum asiaticum ; E-Z isomerism. ; N-(3-methoxy-4-hydroxybenzylidene)-4'-hydroxyphenethyl- amine ; isocraugsodine
    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(88)80457-6
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  • 5
    Electronic Resource
    Electronic Resource
    Glucosyloxy alkaloids from Pancratium biflorum
    Amsterdam : Elsevier
    Phytochemistry 23 (1984), S. 1167-1171 
    Details
    ISSN: 0031-9422
    Keywords: Amaryllidaceae ; Pancratium biflorum ; alkaloid-metal ion complex ; alkaloid-sterol complex ; alkaloids ; glucosyloxy alkaloids ; hordenine ; hordenine-4-O-β-d-glucoside ; lycorine ; lycorine-1-O-β-d-glucoside ; ontogenic variation ; pretazettine ; proto alkaloids ; pseudolycorine ; pseudolycorine-1-O-β-d-glucoside ; root growth promoter. ; tazettine ; tyramine ; β-phenethylamine
    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/S0031-9422(00)82631-X
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  • 6
    Electronic Resource
    Electronic Resource
    Electron ionization rate in III–V ternary semiconductors (1987)
    Springer
    Applied physics 43 (1987), S. 105-109 
    Details
    ISSN: 1432-0630
    Keywords: 72.15 ; 79.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Theoretical calculations are presented for the ionization rate of electrons in III–V ternary semiconductor compounds considering alloy scattering and carrier-carrier interaction, in addition to optical phonon scattering and ionization scattering. However, alloy scattering is found to be a weak interaction. Fairly good agreement is obtained for Ga1−x In x As withx=0.14 and 0.53 with the experimental results and for Ga0.5 Al0.5 As with the existing theoretical result which used an indirect method. The alloy scattering potential has been taken in the form of energy band-gap difference. The calculations can be used for any ternary semi-conductor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00617961
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  • 7
    Electronic Resource
    Electronic Resource
    Hot-electron drift velocity in III–V semiconductors under the condition of impact ionization (1987)
    Springer
    Applied physics 43 (1987), S. 53-60 
    Details
    ISSN: 1432-0630
    Keywords: 72.15 ; 79.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A calculation has been carried out for the drift velocity of electrons in the highfield region under the condition of impact ionization in III–V semiconductor compounds. The energy-balance equation of the one-electron model has been solved considering alloy scattering and carrier-carrier interaction, in addition to optical phonon and ionization scattering. Fairly good agreement is obtained for GaAs with the available experimental and Monte-Carlo results. Graphs for the high-field drift velocity has also been plotted for Ga1−x InxAs (x = 0.53) at different ratios of ionization mean-free path and optical phonon mean-free path. The plot of high-field drift velocity versus ionization rate reveals that the high-field drift velocity strongly depends on the ionization rate of carriers, and vice versa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615206
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  • 8
    Electronic Resource
    Electronic Resource
    Liquid exclusion chromatography. A technique for monitoring the growth of polymer particles in emulsion polymerization (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 22 (1978), S. 577-584 
    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: An experimental investigation of the growth of polymer particles in the emulsion polymerization of styrene and of vinyl acetate is reported. The growth of polymer particles in the size range of 200-6500 Å was monitored by liquid exclusion chromatography (LEC). This relatively new analytical technique permits very rapid analysis for particles as small as 200 Å and should prove extremely useful as an online monitor of polymer particle size for the control of latex reactors.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1978.070220225
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of zinc diisopropyl dithiophosphate on the photooxidative degradation of poly(2,6-dimethyl-1,4-phenylene oxide) films (1983)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 34 (1983), S. 216-218 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Der Einfluß von Zink-diisopropyl-dithiophosphat (ZnDTP) auf den photostabilisierten Abbau von Filmen aus Poly(2,6-dimethyl-1,4-phenylen-oxid) wurde im Konzentrationsbereich 0,1 bis 1,0 Masse-% untersucht. Der Abbau des Polymers hängt deutlich von der Konzentration des ZnDTP ab, das bei allen Konzentrationen als Photostabilisator wirkte.
    Notes: The effect of zinc diisopropyl dithiophosphate (ZnDTP) chelate over the range of 0.1 to 1.0 wt.% on the photostabilized degradation of poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) films was examined. The degradation of the polymer was remarkably affected by the concentration of the ZnDTP which acted as photostabilizer at all concentrations.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1983.010340407
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  • 10
    Electronic Resource
    Electronic Resource
    Form Function for Propellants in Closed Vessel Work (1980)
    Weinheim : Wiley-Blackwell
    Propellants, Explosives, Pyrotechnics 5 (1980), S. 9-14 
    Details
    ISSN: 0721-3115
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A general theoretical cubic form function for use in closed vessel work during the evaluation of absolute ballistic parameters of propellants is introduced along with the expressions for the coefficients for a number of common propellant shapes. The conditions under which this form function is accurately applicable are also indicated. This form function is superior and gives much more accurate results than the quadratic form function which is in wide use at present. The differences of the cubic form function from the quadratic are also explained.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prep.19800050103
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