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African merchants in the colonial period a history of commerce in Damagaram (Central Niger) 1880-1960.Baier, Stephen. January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1974. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Methodologische Untersuchungen zur Veränderung sahelischer Überschwemmungsgebiete mittels Fernerkundung Fallbeispiel Nigerbinnendelta (Mali) /Hess, Sigrid. January 2002 (has links) (PDF)
Mainz, Universiẗat, Diss., 2003.
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Effects of crop residue management, phosphorus application and molybdenum supply on yield and nutrient uptake of pearl millet, cowpea and groundnut in Sahelian cropping systems /Mühlig-Versen, Bernhard. January 2001 (has links)
Zugl.: Hohenheim, Univ., Diss., 2001.
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Sequence stratigraphy of Niger Delta, Delta field, offshore NigeriaOwoyemi, Ajibola Olaoluwa 01 November 2005 (has links)
The Niger Delta clastic wedge formed along the West Africa passive margin. This wedge has been divided into three formations that reflect long-term progradation: 1) pro-delta shales of the Akata Formation (Paleocene to Recent), 2) deltaic and paralic facies of the Agbada Formation (Eocene to Recent) and 3) fluviatile facies of the Benin Formation (Oligocene-Recent). This study combines a three-dimensional seismic image with well log data from Delta field to describe lithic variations of the Agbada Formation and develop a sequence stratigraphic framework. The 5000-feet thick Agbada Formation in Delta field is divided by five major sequence boundaries, each observed in seismic cross sections to significantly truncate underlying strata. Sequence boundaries developed as mass flows eroded slopes steepened by the structural collapse of the Niger Delta clastic wedge. Basal deposits directly overlying areas of deepest incision along sequence boundaries formed by the migration of large, sinuous turbidite channels. Upward-coarsening sets of inclined beds, hundreds of feet thick, record progradation of deltas into turbidite-carved canyons and onto down faulted blocks. Thinner, more continuous seismic reflections higher within sequences are associated with blocky and upward-fining well-log patterns interpreted to reflect deposition in shoreline, paralic, and fluvial environments.
Episodes of structural collapse of the Niger Delta clastic wedge appear to be associated with progradation of Agbada Formation sediments and the loading of underlying Akata Formation shales. Progradation may have been more rapid during third order eustatic sea level falls. Effects of syn-sedimentary deformation on patterns of sediment transport and deposition are more pronounced in lower sequences within the Agbada Formation, and include: 1) incision into foot walls of listric normal faults, 2) abrupt reorientation of channelized flow pathways across faults, and 3) thinning of deposits across crests of rollover anticlines on down thrown fault blocks. Structural controls on deposition are less pronounced within younger sequences and canyon incisions along sequence boundaries are more pronounced, suggesting that the locus of sediment accumulation and structural collapse of the clastic wedge moved farther basinward as accommodation was filled in the area of Delta field.
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A study of certain factors affecting the nutrition of Aspergillus nigerBennett, James Percy. January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1918. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 58-63).
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Studies on the mechanism of citrate and oxalate formation by Aspergillus nigerBomstein, Ralph Aaron, January 1951 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1951. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 43-46).
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The effect of certain mineral salts upon the nutrition of Aspergillus nigerBrowning, Harold William, January 1920 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1920. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 168-175).
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Untersuchungen zur gerichteten Evolution einer Epoxidhydrolase aus Aspergillus nigerTorre, Claudia. January 2003 (has links) (PDF)
Bochum, Univ., Diss., 2003. / Computerdatei im Fernzugriff.
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Untersuchungen zur gerichteten Evolution einer Epoxidhydrolase aus Aspergillus nigerTorre, Claudia. January 2003 (has links) (PDF)
Bochum, Univ., Diss., 2003. / Computerdatei im Fernzugriff.
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Optimization of glucose oxidase production and excretion by recombinant Aspergillus niger Optimierung der Produktion und Exkretion von Glucoseoxidase mittels rekombinanten Aspergillus niger /El-Enshasy, Hesham A. January 1998 (has links) (PDF)
Braunschweig, Techn. University, Diss., 1998.
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