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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Auswirkungen kontrollierter Bodenbelastungen auf das Druckfortpflanzungsverhalten und physikalisch-mechanische Kenngrössen von Ackerböden /

Semmel, Harald. January 1993 (has links)
Thesis (doctoral)--Christian-Albrechts-Universität zu Kiel, 1993. / Includes bibliographical references (p. 173-183).
12

Entwicklung eines Informationssystems zum bodenschonenden Forstmaschineneinsatz

Ziesak, Martin. January 2004 (has links) (PDF)
München, Techn. Univ., Diss., 2004.
13

Three-dimensional inversion of transient electromagnetic data a comparative study /

Commer, Michael. January 2003 (has links) (PDF)
Köln, University, Diss., 2003.
14

Soil degradation: Its aspects and modelling / a case study of Northeast Nuba Mountain South Kordofan State, Sudan

Elgubshawi, Abdelmoneim A. I. 20 April 2009 (has links) (PDF)
The study was carried out at Abujubeha area (10? 52 48.17 ‐11? 23 08.79 N and 30? 00 05.99 ‐ 31? 28 04.91’ E) in Northeast Nuba Mountain, South Kordofan region, Sudan. In order to investigate the soil degradation aspects in the study area, its causal, rate per time and mapping; the remote sensing and GIS technologies were used beside the routine soil survey and laboratory analyses. Quantitative information on soils degradation and vegetation cover changes was acquired. Using multi‐spectral satellite imagery the most dynamic land cover types have been able to be mapped with 64% accuracy (Dense Forest, Moderate Forest, Light Forest, Fallow and Bare soils). The result showed that 38% of the forested areas were lost in the last two decades at annual rate of 1.8%. Forest clearance in the last 5 (199‐2005) years equal two times the clearance happened in the previous 15 years (1986‐1999). The geostatistical characterization of soil variability showed that soil properties are highly spatially dependent, with significant sensitivity to soil‐forming factors. Soils dynamic are affected by land use system as well as with soil physiographic position. The Red soils (Gardud) are more dynamic than the Dark clayey soils. The Universal Soil Loss Equation (USLE) was used; the result revealed that the study area is potentially susceptible to be eroded by water. The Erosion rate was measured in term of erosion Risk Assessment. The model indicated that the overall average of soil loss is 1.32 t/ha /y.
15

Zur spätquartären Flussgeschichte NE-Nigerias morphologische, lithostratigraphische und pedologische Untersuchungen im Sedimentationsbereich der Tschadsee-Tributäre Komadugu Yobe und Komadugu Gana /

Gumnior, Maren. Unknown Date (has links)
Universiẗat, Diss., 2006--Frankfurt (Main).
16

Absorbing boundaries for the time-domain analysis of dam-reservoir-foundation systems /

Feltrin, Glauco. January 1997 (has links)
Diss. no. 12129 techn. sc. SFIT Zurich. / siehe auch: Absorbing boundaries for the time-domain analysis of dam-reservoir-foundation systems. Literaturverz.
17

Geochemical patterns in the soils of Zeeland : natural variability versus anthropogenic impact /

Spijker, J., January 2005 (has links)
Thesis (doctoral)--Utrecht University, the Netherlands, 2005. / Includes bibliographical references (p. 175-183).
18

Schädliche Bodenverdichtung vermeiden: Schädliche Bodenverdichtung bei Baumaßnahmen vermeiden – erkennen – beheben

Feldwisch, Norbert, Friedrich, Christian 15 February 2017 (has links)
Die Broschüre gibt Hinweise, wie insbesondere bei Baumaßnahmen schädliche Bodenverdichtungen vermieden bzw. minimiert werden können. Es wird erläutert, was eine schädliche Bodenverdichtung ist, wie diese zu erkennen ist und wie sie behoben werden kann. Checklisten und Karten zur Verdichtungsempfindlichkeit der Böden unterstützen Genehmigungsbehörden und Bauunternehmer bei der Beachtung des Bodenschutzes.
19

Soil degradation: Its aspects and modelling: a case study of Northeast Nuba Mountain South Kordofan State, Sudan

Elgubshawi, Abdelmoneim A. I. 17 December 2008 (has links)
The study was carried out at Abujubeha area (10? 52 48.17 ‐11? 23 08.79 N and 30? 00 05.99 ‐ 31? 28 04.91’ E) in Northeast Nuba Mountain, South Kordofan region, Sudan. In order to investigate the soil degradation aspects in the study area, its causal, rate per time and mapping; the remote sensing and GIS technologies were used beside the routine soil survey and laboratory analyses. Quantitative information on soils degradation and vegetation cover changes was acquired. Using multi‐spectral satellite imagery the most dynamic land cover types have been able to be mapped with 64% accuracy (Dense Forest, Moderate Forest, Light Forest, Fallow and Bare soils). The result showed that 38% of the forested areas were lost in the last two decades at annual rate of 1.8%. Forest clearance in the last 5 (199‐2005) years equal two times the clearance happened in the previous 15 years (1986‐1999). The geostatistical characterization of soil variability showed that soil properties are highly spatially dependent, with significant sensitivity to soil‐forming factors. Soils dynamic are affected by land use system as well as with soil physiographic position. The Red soils (Gardud) are more dynamic than the Dark clayey soils. The Universal Soil Loss Equation (USLE) was used; the result revealed that the study area is potentially susceptible to be eroded by water. The Erosion rate was measured in term of erosion Risk Assessment. The model indicated that the overall average of soil loss is 1.32 t/ha /y.
20

Handbuch Agrogeophysik - Potenzial und Anwendungsbeispiele geophysikalischer Techniken in Landwirtschaft und Bodenkunde

Müller, Martin, Yaramanci, Ugur, Nitzsche, Olaf 08 December 2008 (has links)
In dieser Publikation werden verschiedene bewährte und neue geophysikalische Verfahren in ihrem aktuellen Entwicklungsstand sowie ihren Kombinationsmöglichkeiten beschrieben und Möglichkeiten und Grenzen im Hinblick auf die Gewinnung der erforderlichen Bodeninformationen in der gewünschten Auflösung unter Beachtung des (personellen und zeitlichen) Messaufwandes und der dadurch entstehenden Kosten beschrieben. Ziel dieses Handbuches ist es, eine umfassende Präsentation von Anwendungen geophysikalischer Techniken in der Landwirtschaft zur Verfügung zu stellen. Zum einen soll dieses Handbuch einen Überblick über die Möglichkeiten zur flächenhaften Erfassung von Bodenparametern auf Ackerflächen durch geophysikalische Messungen liefern. Zum anderen soll es aber auch über die (derzeitigen) Grenzen der geophysikalischen Methoden informieren.

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