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  • 1
    Electronic Resource
    Electronic Resource
    Polarographic Behavior of Aromatic Nitro Compounds. I. Mononitro Compounds. (1949)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 53 (1949), S. 545-562 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150469a011
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  • 2
    Electronic Resource
    Electronic Resource
    Inactivation of Antibacterial Substances with Cysteine (1946)
    [s.l.] : Nature Publishing Group
    Nature 157 (1946), S. 838-838 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A WIDE range of therapeutic substances(for example,arsphenamine1, 2-methyl-1: 4-naphthaquinone2, pencillin and other mould products3,4 and tervalent antimonials5)is inactivated by cysteine. Colwell and McCall2 found that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/157838a0
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  • 3
    Electronic Resource
    Electronic Resource
    Colorimetric Estimation of Penicillin II (1946)
    [s.l.] : Nature Publishing Group
    Nature 158 (1946), S. 910-911 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE Kapeller-Adler1 method for the estimation of phenylalanine depends on the nitration of phenylalanine to give 3 : 4-dinitrophenylalanine; this is then reduced by alkaline hydroxylamine to a coloured nitroso derivative. It appeared probable that, by virtue of its phenylacetic ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/158910b0
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  • 4
    Electronic Resource
    Electronic Resource
    Identification of a plant growth inhibiting iridoid lactone fromDuroia hirsuta, the allelopathic tree of the ‘Devil's Garden’ (1994)
    Springer
    Cellular and molecular life sciences 50 (1994), S. 840-842 
    Details
    ISSN: 1420-9071
    Keywords: Duroia hirsuta ; Rubiaceae ; allelopathy ; plumericin ; iridoid lactone ; plant growth inhibition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Bioactivity-directed fractionation of a root extract ofDuroia hirsuta (Rubiaceae), a toxic and potentially allelopathic understory tree from the western Amazon, has led to the isolation of the tetracyclic iridoid lactone, plumericin (1). Bioassays showing plumericin strongly inhibited lettuce radicle elongation at a concentration (IC50) of 35.8 μm/ml (123 μM). The isolation of a highly potent inhibitor of plant growth fromDuroia hirsuta supports the hypothesis that the lack of vegetation surrounding this tree is the result of allelopathy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01956467
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  • 5
    Electronic Resource
    Electronic Resource
    Chemical Basis for Aspilia Leaf-Swallowing by Chimpanzees: A Reanalysis (1997)
    Springer
    Journal of chemical ecology 23 (1997), S. 2211-2226 
    Details
    ISSN: 1573-1561
    Keywords: Aspilia ; chimpanzees ; 1,2-dithiins ; thiarubrines ; zoopharmacognosy ; antifungal bioassay ; Candida albicans
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Thiarubrine A, an antimicrobial and nematocidal 1,2-dithiin polyyne has been reported to be a constituent of Aspilia leaves swallowed whole by chimpanzees. Aspilia samples were analyzed for the presence of thiarubrine A and other sulfur-containing polyynes using high-performance liquid chromatography (HPLC) and an antifungal bioassay. Thiarubrines A, B, D, and E and their corresponding thiophenes were not present in the leaves of three Aspilia species including A. mossambicensis and A. rudis, which are swallowed by chimpanzees at Mahale Mountains National Park and Gombe National Park, Tanzania. Antifungal activity, indicative of the presence of thiarubrines, was not detected in Aspilia leaf samples. Small amounts of thiarubrines A and B, and thiophenes A and B were found in A. mossambicensis roots. Analysis of three North American taxa found high concentrations of thiarubrines and thiophenes in the roots of Eriophyllum lanatum and Chaenactis douglasii, and the roots and leaves of Ambrosia chamissonis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/B:JOEC.0000006440.57230.a9
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  • 6
    Electronic Resource
    Electronic Resource
    Exercise-induced hypoxaemia in master athletes: effects of a polyunsaturated fatty acid diet (1995)
    Springer
    European journal of applied physiology 72 (1995), S. 44-50 
    Details
    ISSN: 1439-6327
    Keywords: Alveolar-arterial difference in oxygen ; Exercise test ; Driving component of ventilation ; Cell membrane fluidity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Exercise-induced hypoxaemia (EIH) has been associated with an oxygen diffusion limitation. Because polyunsaturated fatty acids (PUFA) administration can modify cell membrane fluidity, we hypothesized that the importance of EIH could be reduced after a 6-week PUFA diet. Resting pulmonary functions and a maximal cycling test were performed before and after the diet, in eight master athletes [48 (SD 6 years)]. The partial pressure. of O2 in arterial blood (PaO2), alveolar ventilation ( $$\dot V_A $$ ) and ideal alveolar-arterial oxygen partial pressure difference (P(A i−a)O2) were obtained at each exercise intensity. The extent of EIH at maximal exercise was significantly lower after PUFA [PaO2 −17.2 (SEM 1.9) vs −12.9 (SEM 2.2)]. Before PUFA, $$\dot V_A $$ accounted for 50% of the variance in the fall inP(A i−a) for intensities below 80% maximal oxygen uptake ( $$\dot VO_{2\max } $$ ) andP(A i−a)O2 for 60% between 70% and 100% $$\dot VO_{2\max } $$ . After PUFA, the reduction in EIH was highly correlated (r 2 = 0.85;P 〈 0.001) to resulting changes inP(Aii−a)O2 and resting pulmonary diffusing capacity $$(D_{L_{CO} } )/\dot V_A $$ but not with changes in ideal alveolar partial pressure of oxygen. The improvement in EIH following PUFA could be related to an increase in alveolar-arterial oxygen conductance following improved pulmonary diffusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00964113
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  • 7
    Electronic Resource
    Electronic Resource
    Annual reports on N.M.R. spectroscopy. Volume 5A. Edited by E. F. Mooney, Academic Press, London and New York, 1972. pp. xii + 696. £13.00 (1973)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 5 (1973), S. A11 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270050411
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