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  • Analytical Chemistry and Spectroscopy  (2)
  • 33.50.Dq  (1)
  • 8α-amino-ergolines  (1)
  • Conflicting demands  (1)
Source
Material
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    NaK 22Σ+ → 11Σ+ band optically pumped laser near 1.02 μm (1989)
    Springer
    Applied physics 49 (1989), S. 155-161 
    Details
    ISSN: 1432-0649
    Keywords: 42.55.Hq ; 33.50.Dq
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Optically pumped laser emission has been observed on the NaK 2(A)1Σ+ → 1(X)1Σ+ electronic state transition. The emission occurs between 1.015 and 1.035 μm when a sodium-potassium heat-pipe oven is pumped with 695–745 nm pulsed dye laser radiation. The laser emission occurs on many ro-vibrational transitions without the use of cavity mirrors. However, the addition of a simple cavity increases both the number of observed lasing transitions and the amplitude of the emission on each line. We report our results for the dependence of the emission intensity on pump laser power, oven temperature, and buffer gas pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00332276
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Pharmacodynamic profile of CQP 201-403, a novel 8α-amino-ergoline (1988)
    Springer
    Cellular and molecular life sciences 44 (1988), S. 431-436 
    Details
    ISSN: 1420-9071
    Keywords: CQP 201-403 ; 8α-amino-ergolines ; ergot pharmacology ; D-2 agonist ; endocrine ; CNS ; cardiovascular actions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The profile of action in animals of CQP 201-403, a novel 8α-amino-ergoline, is in most aspects that of a very potent dopaminomimetic, both as a prolactin secretion inhibitor, and at the levels of the CNS and the cardiovascular system. Qualitatively CQP 201-403 differs slightly from bromocriptine and apomorphine in its effects on the CNS (no influence on serotonin metabolism in the rat cortex; induction of masculine mounting behavior in rats) and the cardiovascular system of the dog (reflex tachycardia in response to a blood-pressure fall). In man the new compound proved to be highly active in lowering prolactin serum levels and to be more potent than bromocriptine (Parlodel®).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01940539
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Feeding postures of suspension-feeding larval black flies: the conflicting demands of drag and food acquisition (1991)
    Springer
    Oecologia 85 (1991), S. 457-463 
    Details
    ISSN: 1432-1939
    Keywords: Suspension-feeding ; Boundary layers ; Drag ; Conflicting demands ; Larval black flies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We tested whether larval black flies actively control the positioning of their feeding appendages (labral fans), and if so, whether their posture represents a balance between the conflicting demands of drag and feeding. We compared the postures of live larvae with the postures of larvae killed by heat-shock in three different flow regimes in a laboratory experiment; we assumed that the postures of heat-killed larvae approximated a passive response to drag. The average height of the labral fans above the bed declined significantly in faster flows, and was significantly greater in live than dead larvae. There was also a significant interaction effect, since the difference between the fan heights of live and dead larvae was greater in slower flows. Two mechanisms may contribute to this result. Larvae in slower flows have to increase their fan heights more than larvae living in faster flows to achieve comparable increases in velocity and thus particle flux. In addition, muscular strength may limit the feeding postures larvae can assume. The fan heights of live larvae also varied depending on the concentration of food particles: larvae exposed to low food concentrations held their fans higher above the bed than did larvae exposed to high food concentrations in the same flow regime. This change in posture is due neither to an uneven particle concentration in the boundary layer nor to added drag from particles trapped in the labral fans. Collectively, our results indicate that these suspension feeders actively control their feeding posture, and suggest that these varying postures represent a dynamic balance between the conflicting needs of minimizing drag and maximizing feeding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00323756
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Mass spectrometry of pyrrolo [2, 3- b] pyrazines and pyrazino [2, 3- b]indole (1977)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 12 (1977), S. 421-423 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The first mass spectra of pyrrolo [2, 3-b] pyrazine and some of its derivatives and of pyrazino [2, 3-b] indole are reported and compared with those of related compounds. Differences between the spectra of some aryl substituted derivatives are described and discussed.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210120703
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Bond polarizability calculations of the Raman optical activity of (R)-(+)-3-Methylcyclohexanone (1982)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 13 (1982), S. 155-159 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The bond polarizability theory of Raman optical activity is used to calculate the complete Raman optical activity spectrum of (R)-(+)-3-methylcyclohexanone. The results are compared with the observed depolarized Raman circular intensity difference spectrum in the region 50-1800 cm-1. The predictions are better in the upper half of this range probably because at lower frequency the calculated normal coordinates are less reliable and the contributions from carbonyl deformations increase.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250130211
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    Paper (German National Licenses)
    Fulltext
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