968 resultados para decomposition of gauge field
Resumo:
Back Row: head coach Nancy Cox, Kristen Tiner?, Kara Lentz, Heather Wiley, Beth Riley, Catherine Pickard, Jillianne Whitfield, Jeannie Goldfarb, Lori Hillman, assistant coach Patrick Cota
Middle Row: Paige Pickett, Ashley Lennington, Kerri DeVos, Nicole Lonsway, Mary Fox, Eleanor Martin, Michaela McDermott, assistant coach Tracey Fuchs
Front Row: Lucia Belassi, Erin Dallas, Sarah Wilite?, Lauren MacMillan, Katie Morris, Jill Civic?, Stephanie Hoyer
Resumo:
Inscribed verso: Standing, l to r: Dave Whentley, Ronald Anderson, Jim Kokous, Gaston Sigur, John Hall, Mr. Kayano, Jiro Taguchi. Sitting l to r: Rolf Ward, Dave Plumer (sp?), Tashio Nok, Richard Beardsly, R.B. Hall, James Plumer, Carl Remes, Hidi Shohara, Joseph Yomaguchi
Resumo:
Mode of access: Internet.
Resumo:
Published by the state Department of agriculture.
Resumo:
From Philosophical transactions for 1808, v. 98, p. 1-44, 341-346.
Resumo:
Minor variations in title
Resumo:
"Eugene Field; a memory", by Roswell Martin Field: v. 1, p. ix-xlvii.
Resumo:
Mode of access: Internet.
Resumo:
Recent research involving starch grains recovered from archaeological contexts has highlighted the need for a review of the mechanisms and consequences of starch degradation specifically relevant to archaeology. This paper presents a review of the plant physiological and soil biochemical literature pertinent to the archaeological investigation of starch grains found as residues on artefacts and in archaeological sediments. Preservative and destructive factors affecting starch survival, including enzymes, clays, metals and soil properties, as well as differential degradation of starches of varying sizes and amylose content, were considered. The synthesis and character of chloroplast-formed 'transitory' starch grains, and the differentiation of these from 'storage' starches formed in tubers and seeds were also addressed. Findings of the review include the higher susceptibility of small starch grains to biotic degradation, and that protective mechanisms are provided to starch by both soil aggregates and artefact surfaces. These findings suggest that current reasoning which equates higher numbers of starch grains on an artefact than in associated sediments with the use of the artefact for processing starchy plants needs to be reconsidered. It is argued that an increased understanding of starch decomposition processes is necessary to accurately reconstruct both archaeological activities involving starchy plants and environmental change investigated through starch analysis. (C) 2004 Elsevier Ltd. All rights reserved.
Resumo:
Information on decomposition of harvest residues may assist in the maintenance of soil fertility in second rotation (2R) hoop pine plantations (Araucaria cunninghamii Aiton ex A. Cunn.) of subtropical Australia. The experiment was undertaken to determine the dynamics of residue decomposition and fate of residue-derived N. We used N-15-labeled hoop pine foliage, branch, and stem material in microplots, over a 30-mo period following harvesting. We examined the decomposition of each component both singly and combined, and used C-13 cross-polarization and magic-angle spinning nuclear magnetic resonance (C-13 CPMAS NMR) to chart C transformations in decomposing foliage. Residue-derived N-15 was immobilized in the 0- to 5-cm soil layer, with approximately 40% N-15 recovery in the soil from the combined residues by the end of the 30-mo period. Total recovery of N-15 in residues and soil varied between 60 and 80% for the combined-residue microplots, with 20 to 40% of the residue N-15 apparently lost. When residues were combined within microplots the rate of foliage decomposition decreased by 30% while the rate of branch and stem decomposition increased by 50 and 40% compared with rates for these components when decomposed separately. Residue decomposition studies should include a combined-residue treatment. Based on C-15 CPMAS NMR spectra for decomposing foliage, we obtained good correlations for methoxyl C, aryl C, carbohydrate C and phenolic C with residue mass, N-15 enrichment, and total N. The ratio of carbohydrate C to methoxyl C may be useful as an indicator of harvest residue decomposition in hoop pine plantations.