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  • Chemistry  (2)
  • [abr] PCA; perchloric acid  (2)
  • [abr] pNA; p-nitroanilide  (2)
  • [abr] t-Boc; tert-butyloxycarbonyl  (2)
  • 3D range data  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 97 (1980), S. 28-32 
    ISSN: 0006-291X
    Keywords: [abr] Ac; acetyl ; [abr] DCC; N, N'-dicyclohexylcarbodiimide ; [abr] DPPA; diphenylphosphorazidate ; [abr] HOBt; 1-hydroxybenzotriazole ; [abr] PCA; perchloric acid ; [abr] Plg; plasminogen ; [abr] Suc; succinyl ; [abr] Z; benzyloxycarbonyl ; [abr] pNA; p-nitroanilide ; [abr] t-Boc; tert-butyloxycarbonyl
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 97 (1980), S. 28-32 
    ISSN: 0006-291X
    Keywords: [abr] Ac; acetyl ; [abr] DCC; N, N'-dicyclohexylcarbodiimide ; [abr] DPPA; diphenylphosphorazidate ; [abr] HOBt; 1-hydroxybenzotriazole ; [abr] PCA; perchloric acid ; [abr] Plg; plasminogen ; [abr] Suc; succinyl ; [abr] Z; benzyloxycarbonyl ; [abr] pNA; p-nitroanilide ; [abr] t-Boc; tert-butyloxycarbonyl
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Machine vision and applications 8 (1995), S. 79-84 
    ISSN: 1432-1769
    Keywords: Slit-ray projection ; Position-sensitive device ; 3D range data ; High-speed range finders
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract A new system for high-speed and continuous 3D measurement is presented. It is based on the slit-ray projection method. The key component is the image plane constructed by a position-sensitive device (PSD) array that is horizontally un segmented and linear, but vertically numbered. All PSD row elements are attached to their respective analog signal processors. The analog signals are multiplexed and digitized by multiplexers and A/D converters at appropriate sampling intervals and stored in memory. By virtue of this configuration of the image plane, basis data for 3D measurement are acquired during only one scan of the slit ray at high speed in the form of memory addresses and data. Moreover, if we use large capacity and/or dual port memories, we can continuously obtain 3D range data for as many scenes as needed. The trial system has been implemented with a newly designed 128-channel PSD array and has verified our method, enabling us to obtain successive 3D range data at video rates with an error within±0.3%.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 5 (1961), S. 104-107 
    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: A tracer study has been made of the polymerization of acrylonitrile in an aqueous solution at 25°C with the use of radioactive K2S352O8 and NaHS35O3 in a redox catalyst system. Persulfate and bisulfite give sulfate and sulfonate endgroups, respectively. The contents of these endgroups in the polymer were determined and the following empirical equation was derived: \documentclass{article}\pagestyle{empty}\begin{document}$ \frac{{[{\rm Sulfonate endgroups]}}}{{[{\rm Sulfate endgroups]}}} = 1 + 0.27\left\{ {\frac{{[{\rm NaHSO}_{\rm 3} ]}}{{[{\rm AN] [K}_{\rm 2} {\rm S}_{\rm 2} {\rm O}_{\rm 8} ]}}} \right\}^{1.5} $ \end{document} Sulfonate is the major endgroup under every condition of polymerization. A tentative discussion of the polymerization initiation reaction in this redox system is given in order to account for the above experimental results.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 36 (1960), S. 102-108 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Styrol wurde in Methylenchlorid mit Mineralsäure, wie Schwefelsäure und Chlorwasserstoff, als Katalysator polymerisiert. Diese beiden Katalysatoren geben bei tiefer Temperatur Polymere von hohem Molekulargewicht. Wasser inhibiert die Polymerisation, was vielleicht der Bildung des H3O+ -Ions zuzuschreiben ist, das keine Polymerisation initiiert. Dies unterscheidet sich von der Polymerisation mit FRIEDEL-CRAFTS Katalysatoren, wo Wasser die Rolle eines Cokatalysators besitzt. Es wird angenommen, daß sich durch die Übertragung des Protons von H3SO4+ oder CH2Cl2H+ auf Styrol ein Carboniumion bildet, das die Polymerisation auslöst.
    Notes: Styrene was polymerized methylene chloride by hydrogen acid catalysts such as sulfuric acid and hydrogen chloride. Both catalysts give polymers of high molecular weight at low temperature. Water inhibits the polymerization, which may be due to the formation of H3O+ incapable of initiating polymerization. It contrasts with the polymerization by FRIEDEL-CRAFTS catalysts, where water behaves as a co-catalyst. It was considered that a carbonium ion may be generated by the transfer of proton from H3SO4+ or CH2Cl2H+ to styrene monomer and the polymerization may proceed by resultant carbonium ion.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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