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  • dibenzo-1,4-dioxin alkaloids  (3)
  • 35Q53
  • Biomass increase
  • dissolved organic carbon (DOC)
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Materialart
Erscheinungszeitraum
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Nortiliacorinine-A and nortiliacorine-A from Tiliacora funifera
    Amsterdam : Elsevier
    Phytochemistry 12 (1973), S. 203-205 
    Details
    ISSN: 0031-9422
    Schlagwort(e): Menispermaceae ; Tiliacora funifera ; dibenzo-1,4-dioxin alkaloids ; nortiliacorine-A. ; nortiliacorinine-A
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)84649-X
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  • 2
    Digitale Medien
    Digitale Medien
    Trigilletine and tricordatine: Two new bisbenzylisoquinoline alkaloids from Triclisia species
    Amsterdam : Elsevier
    Phytochemistry 12 (1973), S. 2509-2511 
    Details
    ISSN: 0031-9422
    Schlagwort(e): Menispermaceae ; Triclisia gilletii ; Triclisia subcordata ; dibenzo-1,4-dioxin alkaloids ; tricordatine. ; trigilletine
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(73)80465-0
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  • 3
    Digitale Medien
    Digitale Medien
    Comparison of cocsuline with efirine, trigilletine and N-methyl-12'-O-desmethyltrilobin
    Amsterdam : Elsevier
    Phytochemistry 13 (1974), S. 2326 
    Details
    ISSN: 0031-9422
    Schlagwort(e): Cocculus pendulus ; Cocsuline, Efirine, Trigilletine, N-methyl-12'-O-desmethyltrilobine. ; Menispermaceae ; Triclisia gilletii ; dibenzo-1,4-dioxin alkaloids
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(74)85054-5
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  • 4
    Digitale Medien
    Digitale Medien
    On UrKdV and UrKP (1995)
    Springer
    Letters in mathematical physics 33 (1995), S. 99-111 
    Details
    ISSN: 1573-0530
    Schlagwort(e): 35Q53
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik , Physik
    Notizen: Abstract We present two extensions of Wilson's explanation of the Miura map from MKdV to KdV. In the first, we explain the map of Svinolupovet al. from a certain UrKdV-like equation to KdV, and in the second we explain Konopelchenko's map from the modified KP equation to KP. In the course of the latter, we introduce an ‘UrKP’ system, with an infinite-dimensional symmetry, providing us with a systematic method to construct Bäcklund transformations for the modified KP and KP equations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00739799
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  • 5
    Digitale Medien
    Digitale Medien
    The significance of storms for the concentration and export of dissolved organic carbon from two Precambrian Shield catchments (1997)
    Springer
    Biogeochemistry 36 (1997), S. 67-88 
    Details
    ISSN: 1573-515X
    Schlagwort(e): climate change ; dissolved organic carbon (DOC) ; forested catchments ; nutrient export ; Precambrian Shield streams ; storm runoff
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Geologie und Paläontologie
    Notizen: Abstract Dissolved organic carbon (DOC) concentrations and DOC export arestudied during storms to examine the relationship between DOCconcentration and stream discharge and to assess the importance of stormson DOC export. Storms were monitored in seven subcatchments within twosmall watersheds (Harp 4--21 and Harp 3A) on the Precambrian Shield inCentral Ontario, Canada. Stream DOC concentrations increase during stormsby as much as 100% and 410% in Harp3A and Harp 4--21 respectively. The seasonal regression between DOC andstream discharge is significant in subcatchments without wetlands(r2 〉 0.7) but is not significant in thetwo subcatchments with small wetland areas (r2 〈0.06). On average, regressions based on weekly data yield accurate estimatesof DOC export but the variation in regressions among individual storms andthe small number of high DOC samples result in uncertainties of more than30% in DOC export. The period-weighted calculation ofDOC export from weekly data underestimates export by 14%and 22% in Harp 3A and Harp 4--21 respectively. Stormswere responsible for 57% to 68% of theDOC export in the autumn and 29% to 40%of the DOC export in the spring. A single large storm accounted for31% of the autumn DOC export in Harp 3A. The importanceof individual storms for DOC export and the variation in the relationshipbetween DOC and stream discharge among storms make it difficult to predictthe effects of climate change on DOC export and DOC concentrations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1005779711821
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  • 6
    Digitale Medien
    Digitale Medien
    Sources and flowpaths of dissolved organic carbon during storms in two forested watersheds of the Precambrian Shield (1998)
    Springer
    Biogeochemistry 41 (1998), S. 175-197 
    Details
    ISSN: 1573-515X
    Schlagwort(e): carbon cycling ; dissolved organic carbon (DOC) ; forested catchments ; nutrient export ; Precambrian Shield streams ; storm runoff
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Geologie und Paläontologie
    Notizen: Abstract Dissolved organic carbon (DOC) concentrations and export were studied in two small catchments in central Ontario to examine DOC sources and to assess the hypothesis that organic matter adjacent to the stream is a significant contributor of DOC during storms. Different DOC dynamics and exports were observed according to the depth of the riparian water table. In Harp 4-21, riparian flowpaths were predominantly through A and upper B soil horizons and riparian soils contributed between 73 and 84% of the stream DOC export during an autumn storm. In Harp 3A, riparian flowpaths were predominantly through lower B horizons. Consequently, riparian soils were less important and hillslopes contributed more than 50% of the stream DOC export in subcatchments without wetlands during storms. Wetlands and adjacent soils contributed significantly to DOC export in Harp 3A; 8% of the total catchment area exported 32 to 46% of the storm runoff DOC. DOC export dynamics in wetlands and riparian soils were distinctly different. In wetlands, transport was affected by leaching and flushing of DOC at the wetland surface leading to lower DOC concentrations with successive storms. In riparian soils, groundwater flowpaths were more important and stronger positive relationships between discharge and DOC concentration were observed. Precipitation, throughfall and stemflow were minor sources of stream DOC during storms and contributed less than 20% of the total export.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1005903428956
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  • 7
    Digitale Medien
    Digitale Medien
    Callus cultures of Artemisia absinthium L.: initiation, growth optimization and organogenesis (1996)
    Springer
    Plant cell, tissue and organ culture 45 (1996), S. 67-72 
    Details
    ISSN: 1573-5044
    Schlagwort(e): Biomass increase ; chromosome count ; growth regulators ; regeneration ; tissue culture ; wormwood
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Callus cultures were initiated from micropropagated Artemisia absinthium plantlets on MS basal medium supplemented with different concentrations of BA, Kn, NAA, IAA and 2,4-d in combination or singly. Supplementing the medium with low doses of both BA in combination with NAA, and Kn in combination with NAA enhanced the growth rate of callus cultures. However, cultures grew slowly following the second subculture and the majority turned brown and died within the next month. Initiation of root and shoot primordia occured directly from leaf explants cultured on 1.81 μM 2,4-d, while adventitious shoot formation from callus was observed occasionally when BA was added to the medium in combination with IAA. Furthermore, medium containing 2.22 μM BA and 2.69 μM NAA stimulated both callus growth and organogenesis on some callus cultures derived from leaves and stems of young stock material. The best results were obtained with leaf explants. Cytological analysis of root meristems revealed that all regenerants were diploid (2n=18), as expected.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00043430
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