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  • 1975-1979  (5)
  • 1970-1974  (1)
  • control theory  (3)
  • Chemistry  (2)
  • Polymer and Materials Science  (2)
  • Variable-metric methods  (2)
  • Clomipramine  (1)
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  • 1
    Digitale Medien
    Digitale Medien
    The effects of protriptyline and clomipramine in vitro on the uptake of 5-hydroxytryptamine and dopamine in human platelet-rich plasma (1975)
    Springer
    Psychopharmacology 43 (1975), S. 89-93 
    Details
    ISSN: 1432-2072
    Schlagwort(e): Uptake ; Platelets ; 5-Hydroxytryptamine ; Dopamine ; Inhibition ; Protriptyline ; Clomipramine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The effects of protriptyline and clomipramine, at concentrations of 10−7 M to 10−4 M, were studied in vitro on the uptake of 5-hydroxytryptamine and dopamine uptake in human platelet-rich plasma. It was found that the tertiary amine, clomipramine, was a more potent inhibitor of 5-hydroxytryptamine uptake than the secondary amine, protriptyline. The activity of both compounds was competitive but it was thought unlikely that they acted through tryptamine receptor sites as methysergide 2.5×10−8 M had very little effect on 5-hydroxytryptamine uptake. Neither tricyclic antidepressant had any marked effect on dopamine uptake.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00437621
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  • 2
    Digitale Medien
    Digitale Medien
    Direct-prediction quasi-Newton methods in Hilbert space with applications to control problems (1977)
    Springer
    Journal of optimization theory and applications 21 (1977), S. 199-211 
    Details
    ISSN: 1573-2878
    Schlagwort(e): Variable-metric methods ; optimization theorems ; Hilbert spaces ; control theory
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Abstract In this paper, the Hilbert-space analogue of a result of Huang, that all the methods in the Huang class generate the same sequence of points when applied to a quadratic functional with exact linear searches, is established. The convergence of a class of direct prediction methods based on some work of Dixon is then proved, and these methods are then applied to some control problems. Their performance is found to be comparable with methods involving exact linear searches.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00932520
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  • 3
    Digitale Medien
    Digitale Medien
    Direct prediction methods in Hilbert space with applications to control problems (1977)
    Springer
    Journal of optimization theory and applications 22 (1977), S. 399-415 
    Details
    ISSN: 1573-2878
    Schlagwort(e): Variable-metric methods ; optimization theorems ; Hilbert spaces ; control theory
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Abstract In this paper, the convergence of variable-metric methods without line searches (direct prediction methods) applied to quadratic functionals on a Hilbert space is established. The methods are then applied to certain control problems with both free endpoints and fixed endpoints. Computational results are reported and compared with earlier results. The methods discussed here are found to compare favorably with earlier methods involving line searches and with other direct prediction quasi-Newton methods.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00932863
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  • 4
    Digitale Medien
    Digitale Medien
    Variable metric methods in Hilbert space with applications to control problems (1976)
    Springer
    Journal of optimization theory and applications 19 (1976), S. 381-400 
    Details
    ISSN: 1573-2878
    Schlagwort(e): Variable metric methods ; optimization theorems ; Hilbert spaces ; control theory
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik
    Notizen: Abstract This paper is concerned with some of the most powerful methods of minimizing functionals on Hilbert space. It is established that certain classes of these methods are equivalent and their convergence is proved for certain nonquadratic functionals on a Hilbert space. A computational study of these methods applied to a control problem is also included with particular reference to the equivalence of methods mentioned above.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00941483
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  • 5
    Digitale Medien
    Digitale Medien
    Photostabilizing effect of Ni(II) chelates in polymers. II. Effect of diamagnetic chelates on polypropylene phosphorescence (1974)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 18 (1974), S. 2805-2807 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: Examination of the phosphorescence emission form polypropylene shows the lifetime of the emission to be unaffected by a hydroxybenzophenone light stabilizer but significantly shorted by a diamagnetic Ni(II) chelate stabilizer.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1974.070180921
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  • 6
    Digitale Medien
    Digitale Medien
    A Rapid, Accurate Technique for Determining Densities of High Explosives (1977)
    Weinheim : Wiley-Blackwell
    Propellants, Explosives, Pyrotechnics 2 (1977), S. 81-84 
    Details
    ISSN: 0721-3115
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: An improved gas comparison pycnometer has been developed, based on precise differential pressure measurements coupled with a sample volume compensator. Using helium gas, volumes of solid and powdered explosives can be measured to a precision approaching one part in lo4. Coupled with a precise mass measurement, these volumes allow densities with an uncertainty of ∼± 0.002 g/ml to be inferred. Measurements performed on various explosives have allowed assessment of the purity and homogeneity of individual samples. It is also possible to infer void percentage or porosity in pressed explosive pellets.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/prep.19770020405
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