• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 370
  • 252
  • 67
  • 28
  • 26
  • 15
  • 15
  • 15
  • 6
  • 6
  • 2
  • 2
  • 2
  • 2
  • 2
  • Tagged with
  • 988
  • 170
  • 133
  • 122
  • 120
  • 100
  • 85
  • 81
  • 77
  • 74
  • 69
  • 67
  • 65
  • 57
  • 55
  • 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.
71

Simulation models for investigating East Coast fever and other parasitic diseases

Byrom, W. January 1990 (has links)
Parasitic diseases of animals place a large constraint on livestock production worldwide. The parasite Theileria parva, and the disease East Coast fever it produces, are responsible for the deaths of thousands of cattle each year in central and eastern Africa. Disease control is one way in which agricultural production can be improved, and is a matter of fundamental importance to developing countries where levels of nutrient intake are dangerously low over the majority of the population. This thesis presents computer simulation models to study East Coast fever and its control. Models are constructed based on expert rules extracted from over 80 years of scientific literature concerning the disease. Rules are translated into programming code, and their outcome investigated by computer experimentation. The models are climate driven, and one chapter of this thesis concerns the development of a model to generate sequences of daily weather data from minimal datasets. This thesis also contains deterministic models studying the dynamics of other, more general, parasitic diseases, and also the competition between similar species of parasite. These models are constructed using difference equations and analysed analytically and by simulation. This approach is adopted further to specifically consider the behaviour of the level of Theileria parva infection amongst vector and host populations.
72

Studies on the cytoskeleton of Fasciola hepatica and its response to the fasciolicide tricalbendazole ('fascinex')

Stitt, Alan William January 1991 (has links)
No description available.
73

Effects of stocking rate and botanical composition on animal production from sown pastures in a Mediterranean-type environment /

Gibson, Peter Ridley. January 1977 (has links) (PDF)
Thesis (M.Ag.Sc. 1978) -- The Department of Agronomy, University of Adelaide, Waite Agricultural Research Institute, 1977.
74

"Potomac's Valley shall become a domain we create" commercialism and the South Branch Valley, 1750-1800 /

Lee, Elizabeth Oliver. January 1900 (has links)
Thesis (Ph. D.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains v, 241 p. : col. map. Includes abstract. Includes bibliographical references (p. 228-241).
75

Die Haftung des Verkäufers für Viehmängel nach BGB : dogmatisch und auf historischer Grundlage dargestellt /

Averdunk, Paul. January 1905 (has links)
Thesis (doctoral)--Universität zu Rostock.
76

Die Viehverpfändung im Schweiz. Zivilgesetzbuch /

Egger, Fritz. January 1900 (has links)
Thesis (doctoral)--Universität Bern.
77

La Navarra húmeda del noroeste Estudio geográ fico de la ganaderia.

Pilar de Torres luna, Mariá. January 1971 (has links)
Tesis-Universidad de Navarra. / Bibliography: p. 171-176.
78

Use of inbreeding to increase the response to selection

Sirkkomaa, Sampo. January 1988 (has links)
Thesis (doctoral)--University of Helsinki, 1988. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (p. 25-29).
79

Utilization of the Sparta Equity Auction Market

Anderson, Leonard Ray, January 1967 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1967. / Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
80

The fate and speciation of arsenic in soils and poultry production systems

Seiter, Jennifer M. January 2009 (has links)
Thesis (Ph.D.)--University of Delaware, 2009. / Principal faculty advisor: Donald L. Sparks, Dept. of Plant & Soil Sciences. Includes bibliographical references.

Page generated in 0.0514 seconds