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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

Bifurcating Mach Shock Reflections with Application to Detonation Structure

Mach, Philip 26 August 2011 (has links)
Numerical simulations of Mach shock reflections have shown that the Mach stem can bifurcate as a result of the slip line jetting forward. Numerical simulations were conducted in this study which determined that these bifurcations occur when the Mach number is high, the ramp angle is high, and specific heat ratio is low. It was clarified that the bifurcation is a result of a sufficiently large velocity difference across the slip line which drives the jet. This bifurcation phenomenon has also been observed after triple point collisions in detonation simulations. A triple point reflection was modelled as an inert shock reflecting off a wedge, and the accuracy of the model at early times after reflection indicates that bifurcations in detonations are a result of the shock reflection process. Further investigations revealed that bifurcations likely contribute to the irregular structure observed in certain detonations.
12

Bifurcating Mach Shock Reflections with Application to Detonation Structure

Mach, Philip 26 August 2011 (has links)
Numerical simulations of Mach shock reflections have shown that the Mach stem can bifurcate as a result of the slip line jetting forward. Numerical simulations were conducted in this study which determined that these bifurcations occur when the Mach number is high, the ramp angle is high, and specific heat ratio is low. It was clarified that the bifurcation is a result of a sufficiently large velocity difference across the slip line which drives the jet. This bifurcation phenomenon has also been observed after triple point collisions in detonation simulations. A triple point reflection was modelled as an inert shock reflecting off a wedge, and the accuracy of the model at early times after reflection indicates that bifurcations in detonations are a result of the shock reflection process. Further investigations revealed that bifurcations likely contribute to the irregular structure observed in certain detonations.
13

Genetic analysis of stalk strength in maize /

Flint-Garcia, Sherry A. January 2001 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2001. / Typescript. Vita. Includes bibliographical references (leaves 143-149). Also available on the Internet.
14

Genetic analysis of stalk strength in maize

Flint-Garcia, Sherry A. January 2001 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2001. / Typescript. Vita. Includes bibliographical references (leaves 143-149). Also available on the Internet.
15

An investigation of paedomorphic secondary xylem and secondary woodiness in Xanthorhiza simplicissima, Coreopsis gigantea, and Mahonia bealei

Dulin, Max W. January 1900 (has links)
Dissertation (M.S.)--The University of North Carolina at Greensboro, 2008. / Directed by Bruce Kirchoff; submitted to the Dept. of Biology. Title from PDF t.p. (viewed Feb. 2, 2010). Includes bibliographical references (p. 134-146).
16

Instability in plantations of container-grown Scots pine and consequences on stem form and wood properties /

Rune, Göran. January 2003 (has links)
Thesis (doctoral)--Swedish University of Agricultural Sciences, 2003. / Thesis documentation sheet inserted. Appendix includes reproductions of four papers and manuscripts, three co-authored with others. Includes bibliographical references. Abstract also available online.
17

Water status determination by sensing stem diameter in cotton plants

Diaz-Munoz, Fidel January 1981 (has links)
No description available.
18

Bifurcating Mach Shock Reflections with Application to Detonation Structure

Mach, Philip 26 August 2011 (has links)
Numerical simulations of Mach shock reflections have shown that the Mach stem can bifurcate as a result of the slip line jetting forward. Numerical simulations were conducted in this study which determined that these bifurcations occur when the Mach number is high, the ramp angle is high, and specific heat ratio is low. It was clarified that the bifurcation is a result of a sufficiently large velocity difference across the slip line which drives the jet. This bifurcation phenomenon has also been observed after triple point collisions in detonation simulations. A triple point reflection was modelled as an inert shock reflecting off a wedge, and the accuracy of the model at early times after reflection indicates that bifurcations in detonations are a result of the shock reflection process. Further investigations revealed that bifurcations likely contribute to the irregular structure observed in certain detonations.
19

Inter- and intraspecific variation of stemflow production from Fagus grandifolia and Liriodendron tulipifera effects of bark microrelief & meteorological conditions /

Stan, John Toland van. January 2009 (has links)
Thesis (M.A.)--University of Delaware, 2008. / Principal faculty advisor: Delphis F. Levia, Dept. of Geography. Includes bibliographical references.
20

Stand structure development effects on wood quality of Melina (Gmelina arborea roxb.)

Gonzalez Rubio, Hector Larsen, David R. January 2009 (has links)
Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 15, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dissertation advisor: Dr. David Larsen Vita. Includes bibliographical references.

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