ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Books
  • Articles  (5)
  • American Institute of Physics (AIP)  (5)
  • 1985-1989  (5)
  • Chemistry and Pharmacology  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Analysis of a four-variable model of coupled chemical oscillators (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 90 (1989), S. 3071-3080 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A simple model for the coupling of two chemical oscillators is proposed. The model consists of twotwo-variable subsystems, each of which gives rise to a "cross-shaped phase diagram'' containing two different steady states plus regions of bistability and of oscillation. The subsystems are coupled by diffusion of both species. Extensive numerical simulations reveal that when one subsystem is in the bistable and the other in the oscillatory region of the parameter space, coupling can result in birhythmicity, period doubling, and chaos. When both subsystems are in the oscillatory region, the coupled behavior is even richer, including quasiperiodicity, entrainment, chaos, and phase death (cessation of oscillations), with various hysteresis phenomena between these modes of behavior. The relation of these observations to behavior found experimentally in coupled chemical oscillators is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.455910
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Stochastic behavior and stirring rate effects in the chlorite–iodide reaction (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 89 (1988), S. 6925-6928 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The autocatalytic reaction between chlorite and iodide ions in a closed system is a clock reaction, showing a sudden appearance of brown I2 followed by a rapid disappearance of the color. Under certain conditions, the reaction time displays a striking irreproducibility. This stochastic behavior is studied potentiometrically and spectrophotometrically as a function of initial [I− ], stirring rate and solution volume. The results imply that the irreproducibility is an inherent feature of the reaction generated by fluctuations in the solution after it is "well mixed.'' The key contributors to the stochasticity are local concentration inhomogeneities resulting from imperfect stirring and the "supercatalytic'' reaction kinetics. A qualitative explanation is given that incorporates these aspects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.455316
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The Stark effect and polarizabilities for a diatomic molecule (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 88 (1988), S. 337-341 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The influence of a uniform static electric field on both a single and a collection of diatomic molecules is analyzed in detail. Comparison is made with less rigorous and more ad hoc treatments and numerical results are given for 7LiH and 19FH which show the limitations of frequently invoked approximations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.454605
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Stirring and premixing effects in the oscillatory chlorite–iodide reaction (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 5733-5740 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The reaction between chlorite and iodide has been studied in a CSTR at different stirring rates with and without premixing of the input reagents. Most of the experiments have been conducted under oscillatory conditions. Three steady states are found in the premixing configuration. With the state of mixing as the bifurcation parameter, phase portraits are obtained showing the disappearance of oscillations through various types of bifurcation. The mixing dependence of the system's dynamical behavior is discussed in terms of the elementary steps in a recently proposed mechanism. The significant enrichment in the dynamical behavior observed on varying the mixing requires revision of the mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451534
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    A model for stirring effects on transitions in bistable chemical systemsa) (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 53-57 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Experimental and model studies are reported of nucleation induced transitions between bistable states of a chemical reaction in a stirred tank reactor. In both systems studied, BrO−3–Br−–Mn2+ and ClO2−–I−, the rate of stirring has a marked effect upon the transition in one direction but not in the other. In both cases, good qualitative agreement is found between the experimental results and those of a simple, two-compartment reactor model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448777
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...