Global ETD Search

111	Chemical characterization of phosphate diffusion in a multi-ionic environment Olatuyi, Solomon Olalekan 12 September 2007 (has links) Low phosphate fertilizer efficiency in high pH soils is primarily due to the retardation of P movement in the soil-P fertilizer reaction zone. The objective of this study was to obtain fundamental information on the influence of multi-ionic interactions on the solubility and diffusion of P in columns containing a model soil system and two soil types. The study also aimed to identify the salt combinations and factors that have the potential to enhance the solubility and movement of P in calcareous soil condition. The results showed that the interaction of NH4+ and SO42- was consistent at enhancing the water solubility and movement of P under a high soil pH condition. This effect was attributed to the combination of various mechanistic factors associated with (NH4)2SO4 compound including significant pH reduction, cation exchange reaction of NH4+ with the exchangeable Ca2+, and anionic competition of SO42- with P for precipitation with Ca2+. phosphate diffusion precipitation solubility resin columns
112	Local buckling of large round HSS columns at simple beam connections Salvatore, Mario. January 1984 (has links) No description available. Columns, Iron and steel. Buckling (Mechanics) Girders -- Testing.
113	Development of self-consolidating concrete for drilled shaft applications in Hawaiʻi Ishisaka, Renee January 2007 (has links) Thesis (M.S.)--University of Hawaii at Manoa, 2007. / Includes bibliographical references (leaves 138-139). / x, 139 leaves, bound ill. (some col.) 29 cm Self-consolidating concrete -- Hawaii Columns, Concrete -- Hawaii
114	Structural behaviour of steel fibre reinforced concrete members Aoude, Hassan. January 1900 (has links) Thesis (Ph.D.). / Written for the Dept. of Civil Engineering and Applied Mechanics. Title from title page of PDF (viewed 2008/05/08). Includes bibliographical references.
115	Analytical performance evaluation of hollow prestressed piles and pile-cap connections in the I-5 Ravenna Bridge Greenwood, Steven Michael, January 2008 (has links) (PDF) Thesis (M.S. in civil engineering)--Washington State University, December 2008. / Title from PDF title page (viewed on Apr. 8, 2009). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 136-140).
116	Nonlinear dynamic and static analysis of I-5 Ravenna Bridge Shafiei-Tehrany, Reza, January 2008 (has links) (PDF) Thesis (M.S. in civil engineering)--Washington State University, December 2008. / Title from PDF title page (viewed on Apr. 10, 2009). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 127-133).
117	Full-range analysis of reinforced concrete members and frames Lam, Yuet-kee, Jeffery. January 2009 (has links) Thesis (Ph. D.)--University of Hong Kong, 2009. / Includes bibliographical references (p. 196-214). Also available in print.
118	Design of cold-formed high strength stainless steel tubular columns and beam-columns / Lui, Wing Man. January 2004 (has links) Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references (leaves 149-154). Also available in electronic version. Access restricted to campus users.
119	Experimental investigation of repaired reinforced concrete highway bridge columns / Simon, Rodney, January 1994 (has links) Report (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaf 30). Also available via the Internet.
120	Finite element modeling of reinforced concrete bridge columns with steel jackets using plastic hinge integration / Carlton, Adam K. January 1900 (has links) Thesis (M.S.)--Oregon State University, 2008. / Printout. Includes bibliographical references. Also available on the World Wide Web.

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