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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 89 (1988), S. 2583-2584 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A significant increase in the total integral cross section in (Na)2−Ne collisions with the vibrational level v'' of the sodium molecule in the electronic ground state, at a collision energy of the order of 1 mev is reported. (AIP)
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 2680-2684 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Differential cross sections for rotational transitions in Na2–Ne, Ar collisions are measured up to very large Δj. It is shown that the energy dependent anisotropy ΔR(E) of the interaction potential can be determined from these data using simple classical relations of ΔR and the rainbow angle θR. Excellent agreement with ab initio data is demonstrated and underlines the usefulness of this concept.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 87 (1987), S. 5064-5076 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We report the successful application of an optically pumped molecular beam laser for efficient and selective population transfer from v″=0 to high lying vibrational levels of Na2 in the electronic ground state. More than 50% of the molecules in a thermally populated rotational level of v″=0 can be transferred to a state v″(very-much-greater-than)1 with typically ≥75% of the molecules excited out of the initial state found in the predetermined end vibrational level and approximately ≤25% distributed over other levels according to the Franck–Condon factors. The applicability of this technique to the study of collision processes involving vibrationally highly excited levels is discussed. This work also contributes in general to a better understanding of optically pumped dimer lasers.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 2685-2688 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We report the resolution of supernumerary rotational rainbows for rotationally inelastic ji → jf=0 transitions in Na2–He, Ne, Ar scattering. The relation of the angular position of the supernumerary maxima and the anisotropy ΔR of the interaction potential is established. The analysis yields the energy dependent anisotropy ΔR(E) in very good agreement with data from other sources.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 286-302 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We describe a technique for preparation of molecules in single ||m|| levels involving saturated laser optical pumping on molecular P, R, and Q transitions. This technique is not limited to small rotational quantum numbers j. It allows the determination of the populations of ||m|| levels for arbitrary distribution functions f ( j,m) or alternatively, the determination of all moments of f ( j,m). In principle, this method is able to completely determine the angular distribution of j vectors. Experimental verification of the high ||m||-state purity achieved in Na2 supersonic beams, as well as of inherent limitations due to hyperfine interaction is provided. For illustration, experimental data on laser-induced alignment, the dependence of the flow induced molecular alignment, and on Δm-propensity rules in differential rotationally inelastic scattering are presented.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 84 (1986), S. 756-763 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We report angle-resolved measurements of vi=0 → vf=1 vibrational transitions in Na2–He collisions at an energy of 90 meV. The agreement with calculated cross sections using an ab initio surface is good, both in the angular variation of the cross section as well as with respect to its magnitude relative to the vibrationally elastic process. The calculated (vi=0, ji=0) → (vf=1, jf ) differential cross sections are discussed in some more detail. They show structure, in addition to the rainbow oscillations, related to the fact that the vibrational transition probability vanishes for a specific approach angle.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 13 (1983), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Precipitins against avian antigens in sera from patients with extrinsic allergic alveolitis, asymptomatic pigeon and chicken breeders and from control individuals were tested with different antigen extracts in six laboratories by a variety of different methods. Eighty percent of the results coincided in identifying the positive sera from patients and 90% in identifying the controls. It seems possible therefore to exchange results among experienced laboratories with fair confidence.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 409 (1983), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1435-1536
    Keywords: Proton-NMR ; spin-spin-relaxation ; lineshape analysis ; multicomponent polimeric systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Abstract A method is presented to study the proton spin-spin-relaxation of one and two phase polymeric systems in a time range of 10−6 to 10−1 s, using a logarithmic time scale. Observing the line shape of the free induction decay (FID), an extensive description of the relaxation behaviour is possible in case of one phase systems in the temperature range from the rigid solid to the melt, and in case of two phase systems (in the temperature range between the glass temperatures of each phase) for each phase separately. By a combination of serveral pulse methods known from the literature, the true shape of the FID's is measured. The FID's are analyzed by comparison with simple mathematical line shapes. Several examples of measurements and analyses are discussed.
    Notes: Zusammenfassung Als Grundlage von Polymeruntersuchungen wird ein Meßverfahren vorgestellt, das die Beobachtung der Protonen-Spin-Spin-Relaxation von Ein- und Zweiphasensy steinen in einem Zeitbereich von 10−6 bis 10−1 s unter Verwendung einer logarithmischen Zeitachse gestattet. Hierdurch wird eine einwandfreie Kennzeichnung der Einphasensysteme hinsichtlich der Kettenbeweglichkeit vom Festbis in den Schmelzzustand und der Zweiphasensysteme für jede Phase separat ermöglicht. Durch die Kombination einer Reihe von in der Literatur beschriebener Meßverfahren werden Störeffekte, die die Relaxationskurve verzerren, ausgeschaltet. Die gemessenen Relaxationskurven werden durch Vergleich mit geeigneten Kurvenprofilen mathematisch analysiert. Einige Anwendungsbeispiele werden diskutiert.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 240 (1984), S. 43-48 
    ISSN: 1434-4726
    Keywords: Biochemical analysis ; Perilymph ; Sources of error ; Cerebrospinal fluid ; Guinea-pig
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Contamination of perilymph with other fluids (cerebrospinal fluid, tissue fluid, blood, endolymph) together with sampling, anaesthesia, surgical intervention or food intake of the animals may considerably affect the analytical result. The numerous possible artefacts seem to be the main reason why varying values are given in the literature for the same chemical component of perilymph. This is also partly true of cerebrospinal fluid and blood. The effect of some sources of error on selected chemical components of perilymph, cerebrospinal fluid and blood is briefly summarized.
    Type of Medium: Electronic Resource
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