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  • 1985-1989  (10)
  • 1980-1984  (15)
  • 1970-1974  (9)
  • 1950-1954  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Angularly resolved vibrational excitation in Na2–He collisions (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 84 (1986), S. 756-763 
    Details
    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
    URL: http://dx.doi.org/10.1063/1.450573
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Rotational rainbow scattering with large Δ j: Energy dependence of the anisotropy of the Na2–Ne, Ar interaction potential (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 2680-2684 
    Details
    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
    URL: http://dx.doi.org/10.1063/1.452070
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Supernumerary rotational rainbows in Na2–He, Ne, Ar scattering (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 2685-2688 
    Details
    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
    URL: http://dx.doi.org/10.1063/1.452071
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Preparation and detection of alignment with high ||m|| selectivity by saturated laser optical pumping in molecular beams (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 286-302 
    Details
    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
    URL: http://dx.doi.org/10.1063/1.451655
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  • 5
    Electronic Resource
    Electronic Resource
    Vibrational level dependence of Na2–Ne scattering cross sections at very low collision energy (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 89 (1988), S. 2583-2584 
    Details
    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
    URL: http://dx.doi.org/10.1063/1.455053
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  • 6
    Electronic Resource
    Electronic Resource
    Efficient and selective population of high vibrational levels by stimulated near resonance Raman scattering (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 87 (1987), S. 5064-5076 
    Details
    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
    URL: http://dx.doi.org/10.1063/1.453674
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Precipitins to inhaled avian antigens: Results of an inter-laboratory study (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 13 (1983), S. 0 
    Details
    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
    URL: http://dx.doi.org/10.1111/j.1365-2222.1983.tb02621.x
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    ORAL ROUTE AS METHOD FOR IMMUNIZING AGAINST MUCOSAL PATHOGENS (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 409 (1983), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1983.tb26895.x
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  • 9
    Electronic Resource
    Electronic Resource
    Quantitative analysis of digoxin, 4‴-acetyldigoxin and 4‴-methyldigoxin and their metabolites in bile and urine of rats (1972)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 273 (1972), S. 154-167 
    Details
    ISSN: 1432-1912
    Keywords: Digoxin and Derivatives ; Bis- and Monodigitoxosides ; Biliary Excretion ; Renal Excretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The metabolism of digoxin (D), 4‴-acetyldigoxin (AD) and 4″-methyldigoxin (MD) was studied in biliary fistula rats by quantitative analysis of the excretion of these glycosides after intraduodenal administration. The total activity excreted within 12 h in bile amounts to 45.1; 40.5; 21.3 and in urine to 11.6; 14.3; 17.6% of the dose of D, AD and MD respectively. AD undergoes a rapid, but incomplete desacetylation in the organism. The highest desacetylation activities were found in liver, in intestinal mucosa and in kidney. Yet considerable amounts of unchanged AD were found in portal vein blood and still another 1–2% of the dose in bile and urine. In contrast MD is very slowly demethylated. 15 min after intraduodenal administration portal vein blood contains almost exclusively MD. A stepwise cleavage of digitoxoses from D as well as of AD and MD is indicated. The absolute amounts of digoxigenin-bis-digitoxoside (4–8% of the dose), digoxigenin-mono-digitoxoside (2.5–8.5%) excreted in bile and urine were in the same range for all three glycosides examined, although the relative amounts of these metabolites in bile and urine were much higher after administration of MD than of the two other glycosides. In addition a water-soluble fraction could be detected in bile and urine after administration of D, AD and MD. The absolute quantities of polar metabolites (4.5–7.0%) excreted in bile and urine were identical for all three glycosides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00508087
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Evaluation of the enterohepatic circulation after 3H-digoxin administration in the rat (1972)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 275 (1972), S. 1-10 
    Details
    ISSN: 1432-1912
    Keywords: Enterohepatic Circulation ; Pharmacokinetics ; Digoxigenin-Bis- and Mono-Digitoxoside ; Polar Conjugates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary After intraduodenal administration of 3H-digoxin (d) in biliary fistula (b.f.) rats, the total radioactivity in blood and bile is eliminated with t1/2 of 7 h in both fluids. In rats with intact enterohepatic circulation (e.c.), a t1/2 of 13.5 h was observed in blood and of 22 h in bile. To explain the much longer t1/2 in bile than in blood, the pharmacokinetics were studied of all substances, which might participate in e.c. after d administration. E.c. of the water soluble fraction is negligible since almost no absorption was found. Digoxigenin-bis- (b) and monodigitoxoside (m) showed approximately the same absorption kinetics as d. However, the blood levels of radioactivity after i.d. administration of these metabolites in b.f. rats were 5–6 times lower than those after d as a consequence of higher biliary excretion. 90–95% of the absorbed amounts of b and m were extrected in bile within 11 h compared with 61% after d administration. Thus the far longer t1/2 of elimination of radioactivity in bile than in blood after i.d. administration of d in rats with e.c. seemed to be due to a short circuit of b and m between intestine and liver. Evidence for this comes from the chromatographic analysis of the total radioactivity in the bile of these animals which shows that significantly more b is present in the bile of rats with e.c. than b.f. rats. No differences were found in the case of m, which on one hand is formed to a lesser extent and is on the other rapidly converted to polar metabolites, which are not reabsorbed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00505063
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