Rodolfo Hutchinson - Academia.edu (original) (raw)
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Papers by Rodolfo Hutchinson
Atmospheric Environment, 2008
The objective of this research project was to create a Finite Element Routine for the Linear Anal... more The objective of this research project was to create a Finite Element Routine for the Linear Analysis of Post-Tensioned beams using the program CALFEM® [20] developed at the division of Structural Mechanics in Lund University, Sweden. The program CALFEM and our own made files were written in MATLAB, an easy to learn and user-friendly computer language. The approach used in this thesis for analyzing the composite beam consists in embedding the steel tendons at the exact location where they intersect the concrete parent elements, without moving the concrete parent element nodes. The steel tendons are represented as one dimensional bar elements inserted into the concrete parent elements, which at the same time are represented as 8 node Iso-parametric plane elements. The theory presented in Ref. [4] served as basis for the modeling of the posttensioned beams; however it only explained the procedure for modeling simple reinforced concrete beams, due to this we needed to make the appropri...
Global rainwater dissolved organic carbon (DOC) flux was recently estimated as 430 × 1012 g C yr−... more Global rainwater dissolved organic carbon (DOC) flux was recently estimated as 430 × 1012 g C yr−1, yet little is known about the wide range of chemical compounds present, their sources, temporal patterns of variation, and the subsequent impact on climate and the environment. Precipitation events were sampled in Birmingham, UK between April 2005 and May 2007. Rainwater DOC compounds were analysed using fluorescence spectrophotometry. Three fluorophores were identified: HUmic-LIke Substances (HULIS), TYrosine-LIke Substances (TYLIS) and TRYptophan-LIke Substances (TRYLIS). Peak fluorescence intensities and locations for each substance were examined, and their variations with various meteorological parameters were investigated. The mean HULIS fluorescence intensity from all events was 209 a.u. (with sample fluorescence ranging from 37 a.u. to 995 a.u); mean fluorescence intensity was 469 a.u. (214–988 a.u) and 265 a.u. (50–876 a.u.) for TYLIS and TRYLIS, respectively. Results indicate...
Atmospheric Environment, 2008
The objective of this research project was to create a Finite Element Routine for the Linear Anal... more The objective of this research project was to create a Finite Element Routine for the Linear Analysis of Post-Tensioned beams using the program CALFEM® [20] developed at the division of Structural Mechanics in Lund University, Sweden. The program CALFEM and our own made files were written in MATLAB, an easy to learn and user-friendly computer language. The approach used in this thesis for analyzing the composite beam consists in embedding the steel tendons at the exact location where they intersect the concrete parent elements, without moving the concrete parent element nodes. The steel tendons are represented as one dimensional bar elements inserted into the concrete parent elements, which at the same time are represented as 8 node Iso-parametric plane elements. The theory presented in Ref. [4] served as basis for the modeling of the posttensioned beams; however it only explained the procedure for modeling simple reinforced concrete beams, due to this we needed to make the appropri...
Global rainwater dissolved organic carbon (DOC) flux was recently estimated as 430 × 1012 g C yr−... more Global rainwater dissolved organic carbon (DOC) flux was recently estimated as 430 × 1012 g C yr−1, yet little is known about the wide range of chemical compounds present, their sources, temporal patterns of variation, and the subsequent impact on climate and the environment. Precipitation events were sampled in Birmingham, UK between April 2005 and May 2007. Rainwater DOC compounds were analysed using fluorescence spectrophotometry. Three fluorophores were identified: HUmic-LIke Substances (HULIS), TYrosine-LIke Substances (TYLIS) and TRYptophan-LIke Substances (TRYLIS). Peak fluorescence intensities and locations for each substance were examined, and their variations with various meteorological parameters were investigated. The mean HULIS fluorescence intensity from all events was 209 a.u. (with sample fluorescence ranging from 37 a.u. to 995 a.u); mean fluorescence intensity was 469 a.u. (214–988 a.u) and 265 a.u. (50–876 a.u.) for TYLIS and TRYLIS, respectively. Results indicate...