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  • 13C NMR spectra  (2)
  • intercalation  (2)
  • CYBERNETICS
  • 1985-1989  (5)
  • 1989  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Intercalation of monomers into alpha tin(IV) hydrogen phosphate (1989)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 7 (1989), S. 301-308 
    Details
    ISSN: 1573-1111
    Keywords: α-Tin(IV) hydrogen phosphate ; intercalation ; surface modification ; monomers ; trans-N,N′-diethyl-2-butene-1,4-diamine ; 4-vinylpyridine ; tetraethylenepentamine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Monomers which contain unsaturated linkages and amine groups have been intercalated to form either mono- or bi-layers. The monomertrans-N,N′-diethyl-2-butene-1,4-diamine (NNBD) has been intercalated into α-tin(IV) hydrogen phosphate. The guest molecule, NNBD, forms a monolayer (d 001 = 1.35 nm) in which the amine groups are paired to protons on opposite faces of the phosphate layers. The resultant compound has the formula Sn(C8H18N2)0.73(HPO4)2·H2O indicating that NNBD does not cover a large proportion of the available protons. 4-vinylpyridine slowly forms an intercalate in which the host molecule forms a bilayer (d 001 = 1.56 nn). However, with 4-vinylpyridine there is surface modification in preference to intercalation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01076982
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Calorimetric determination of H+/M+ (M = Li, Cs) ion exchange inγ-titanium hydrogen phosphate (1989)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 7 (1989), S. 337-347 
    Details
    ISSN: 1573-1111
    Keywords: Ion exchange ; lamellar phosphates ; intercalation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract H+/M+ (M = Li, Cs) ion exchange inγ-titanium phosphate (γ-TIP) at 25°C and under static conditions has been studied. Titration and hydrolysis curves and the exchange isotherms were determined. The substitution was followed by X-ray diffraction. Direct calorimetric measurements were carried out at different degrees of conversion and the variation of the exchange enthalpy was obtained. The shape of the calorimetric curves is discussed. The results are compared to the values of ΔH 0 obtained from titration data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01076988
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    13C NMR of coumarins. IIIFor Part II, see Ref. 2. - Simple coumarins (1989)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 27 (1989), S. 892-894 
    Details
    ISSN: 0749-1581
    Keywords: 13C NMR spectra ; Coumarins 8-lodocoumarins ; 2H-Benzopyran-2-ones ; 8-lodo-2H-benzopyran-2-ones ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 13C NMR data for several simple coumarins are reported. The γsyn effect of a 5-methoxy substituent on the C-4 chemical shift was observed and measured. The effects of an 8-iodo substituent on the chemical shifts of the carbons of the coumarinic skeleton are discussed.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260270913
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  • 4
    Electronic Resource
    Electronic Resource
    13C NMR of coumarins. IIFor Part I, see F. A. Macias, G. M. Massanet, F. Rodriguez-Luis and J. Salva, Magn. Reson. Chem. in press. - Khellactones: Spectroscopic criteria to establish the relative configuration of the dihydropyran ring (1989)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 27 (1989), S. 653-658 
    Details
    ISSN: 0749-1581
    Keywords: 13C NMR spectra ; Coumarins ; Pyranocoumarins ; Khellactones ; Khellactone esters ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 13C NMR data of several khellactone derivatives are reported. 1H NMR-based stereochemical criteria are evaluated, and a new criterion based on 13C NMR is proposed to establish the relative configuration at C-3′ and C-4′ using ΔδC-3′ between trans and cis isomers and Δδgem(Me)2 values. The structure of trans-4′-methylkhellactone was determined by x-ray analysis.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260270709
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  • 5
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    Recursive forward dynamics for multiple robot arms moving a common task object (1989)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Recursive forward dynamics algorithms are developed and presented for an arbitrary number of robot arms moving a commonly held object. The multiarm forward dynamics problem is to find the angular accelerations at the joints and the contact forces that the arms impart to the task object. The problem also involves finding the acceleration of this object. The multiarm forward dynamics solutions provide a thorough physical and mathematical understanding of the way several arms behave in response to a set of applied joint moments. Such an understanding simplifies and guides the subsequent control design and experimentation process. The forward dynamics algorithms also provide the necessary analytical foundation for conducting analysis and simulation studies. The multiarm algorithms are based on the filtering and smoothing approach recently advanced for single-arm dynamics, and they can be built up modularly from the single-arm algorithms. The algorithms compute recursively the joint angle accelerations, the contact forces, and the task-object accelerations. Algorithms are also developed to evaluate in closed form the linear transformations from the active joint moments to the joint angle accelerations, to the task object accelerations, and to the task-object contact forces. A possible computing architecture is presented as a precursor to a more complete investigation of the computational performance of the dynamics algorithms.
    Keywords: CYBERNETICS
    Type: IEEE Transactions on Robotics and Automation (ISSN 1042-296X); 5; 510-521
    Format: text
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