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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic studies in the northern Bay of Bengal (1994)
    Springer
    Marine geophysical researches 16 (1994), S. 237-242 
    Details
    ISSN: 1573-0581
    Keywords: Bay of Bengal ; 85°E Ridge ; Ninetyeast Ridge ; Magnetic lineation ; Cretaceous Quiet Zone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Total magnetic intensity and bathymetric surveys were carried out in the northern Bay of Bengal between 6° to 11° 45′ N latitudes and east of 84° to 93° 30′ E longitudes. The hitherto known 85° E Ridge is characterised as a subsurface feature by a large amplitude, positive magnetic anomaly surrounded by Mesozoic crust. A newly identified NE to NNESSW trending magnetic anomaly between 7° N, 87° 30′ E and 10° 30′ N, 89–90° E may be one of the unidentified Mesozoic lineations in the northern Bay of Bengal. The Ninetyeast Ridge is not associated with any recognizable magnetic anomaly. The Sunda Trough to the east of the Ninetyeast Ridge is characterised by a positive magnetic anomaly. A combined interpretation, using Werner deconvolution and analytical signal methods, yields basement depths ~ 10 km below sea level. These depths are in agreement with the seismic results of Curray (1991).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01237516
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of multi-channel seismic reflection and magnetic data along 13° N latitude across the Bay of Bengal (1994)
    Springer
    Marine geophysical researches 16 (1994), S. 225-236 
    Details
    ISSN: 1573-0581
    Keywords: Seismic reflection ; magnetics ; Bay of Bengal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Analysis of the multi-channel seismic reflection, magnetic and bathymetric data collected along a transect, 1110 km long parallel to 13° N latitude across the Bay of Bengal was made. The transect is from the continental shelf off Madras to the continental slope off Andaman Island in water depths of 525 m to 3350 m and across the Western Basin (bounded by foot of the continental slope of Madras and 85° E Ridge), the 85° E Ridge, the Central Basin (between the 85° E Ridge and the Ninetyeast Ridge), the Ninetyeast Ridge and the Sunda Arc. The study revealed eight seismic sequences, H1 to H8 of parallel continuous to discontinuous reflectors. Considering especially depth to the horizons, nature of reflection and on comparison with the published seismic reflection results of Currayet al. (1982), the early Eocene (P) and Miocene (M) unconformities and the base of the Quaternary sediments (Q) are identified on the seismic section. Marked changes in velocities also occur at their boundaries. In the Western Basin the acoustic basement deepening landward is inferred as a crystalline basement overlain by about 6.7 km of sediment. In the Central Basin possibly thicker sediments than in the Western Basin are estimated. The sediments in the Sunda Arc area are relatively thick and appears to have no distinct horizons. But the entire sedimentary section appears to be consisting of folded and possibly faulted layers. The comparatively broader wavelength magnetic anomalies of the Central Basin also indicate deeper depth of their origin. Very prominent double humped feature of the 85° E Ridge and broad basement swell of the Ninetyeast Ridge are buried under about 2.8 km thick sediments except over the prominent basement high near 92° E longitude. The positive structural relief of the buried 85° E Ridge in the area is reflected in magnetic signature of about 450 nT amplitude. Flexural bulge of the 85° E Ridge and subsidence of the Ninetyeast Ridge about 24 cm my−1 rate since early Eocene period have been inferred from the seismic sequence analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01237515
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Titrimetric determination of mercaptans with trivalent cobalt (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 278 (1976), S. 128-128 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Mercaptanen mit Kobalt(III) ; Volumetrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00432575
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of mycorrhizal inoculation and soluble phosphorus fertilizer on growth and phosphorus uptake of pearl millet (1984)
    Springer
    Plant and soil 81 (1984), S. 247-256 
    Details
    ISSN: 1573-5036
    Keywords: Pearl millet ; Pennisetum americanum ; Leeke ; Phosphorus response ; VA mycorrhiza
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Six mycorrhizal fungi were tested as inoculants for pearl millet (Pennisetum americanum Leeke) grown in pots maintained in a greenhouse. VAM fungi varied in their ability to stimulate plant growth and phosphorus uptake. Inoculation withGigaspora margarita, G. calospora andGlomus fasciculatum increased shoot drymatter 1.3 fold over uninoculated control. In another pot trial, inoculation withGigaspora calospora andGlomus fasciculatum resulted in dry matter and phosphorus uptake equivalent to that produced by adding phosphorus at 8 kg/ha. The influence of inoculatingGigaspora calospora on pearl millet at different levels of phosphorus fertilizer (0 to 60 kg P/ha) as triple superphosphate in sterile and unsterile alfisol soil was also studied. In sterile soil, mycorrhizal inoculation increased dry matter and phosphorus uptake at levels less than 20 kg/ha. At higher P levels the mycorrhizal effect was decreased. These studies performed in sterilized soil suggest that inoculation of pearl millet with efficient VAM fungi could be extremely useful in P deficient soils. However, its practical utility depends on screening and isolation of fungal strains which perform efficiently in natural (unsterilized) field conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02197158
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Genotype dependent variation in mycorrhizal colonization and response to inoculation of pearl millet (1985)
    Springer
    Plant and soil 86 (1985), S. 113-125 
    Details
    ISSN: 1573-5036
    Keywords: Genetic crosses ; Genotypes ; Mycorrhizal colonization ; Pearl millet ; Plant effects ; Response
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Genotypes of pearl millet (Pennisetum americanum L. Leeke) were examined for differences in vesicular-arbuscular mycorrhizal (VAM) colonization and response to inoculation. For thirty genotypes tested across three field locations there was a range of mycorrhizal colonization intensity between 25 and 56%. In another experiment with two male-sterile lines, restorer lines and their derived crosses, grown in pots filled with non-sterilized soil there were significant differences between genotypes for colonization by mycorrhiza. This showed hostgenotype dependence for mycorrhizal colonization. Root growth rates, mycorrhizal root length, percentage root colonization and plant growth and P uptake were studied in ten genotypes. A set of 3 genotypes with similar root lengths varied significantly with regard to mycorrhizal root length and the percentage colonization. This supports the suggestion that VAM colonization and spread is dependent on the host genotype. The growth responses differed significantly between the genotypes and they also differed in their responses to P uptake and VAM inoculation. The utility of host-genotype dependent differences in VAM symbiosis in plant breeding is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02185031
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    Paper (German National Licenses)
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