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Dissertations / Theses on the topic 'Organic matter'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Sharp, Emma. "Natural organic matter coagulation." Thesis, Cranfield University, 2005. http://dspace.lib.cranfield.ac.uk/handle/1826/2224.

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The removal of natural organic matter (NOM) is one of the main challenges facing water utilities in both the UK and the US. As a consequence of changes in land management and an increased carbon loss from solids, a greater amount of accumulated organics is now being flushed into the aquatic environment during increased surface run-off events such as snowmelt or heavy rainfall. Furthermore, whilst traditional treatment with trivalent coagulants has proven a successful strategy in the past, operational problems are now being reported during periods of elevated organic levels in the water. These

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2

Laniewski, Krzysztof. "Halogenated organic matter in precipitation /." Linköping : Tema, Univ, 1998. http://www.bibl.liu.se/liupubl/disp/disp98/arts176s.htm.

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3

Nilsson, K. Sofia. "Modelling soil organic matter turnover /." Uppsala : Dept. of Ecology and Environmental Research, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/s326.pdf.

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4

Yusran, Fadly Hairannoor. "Soil organic matter decomposition : effects of organic matter addition on phosphorus dynamics in lateritic soils." University of Western Australia. School of Earth and Geographical Sciences, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0120.

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[Truncated abstract] Relationships between the persistence of organic matter added to soil, the dynamics of soil organic carbon (C) and phosphorus (P) were examined in four experiments on lateritic soils of Western Australia. The main objective was to quantify the release of P following organic matter application in soils which have high P adsorbing capacity. Another objective was to confirm that due to its recalcitrant materials, the effect of peat lasted longer in soil than other sources of organic matter in terms of increasing plant-available P fractions. Three experiments were conducted u

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5

Nuwer, Jonathan Mark. "Organic matter preservation along a dynamic continental margin : form and fates of sedimentary organic matter /." Thesis, Connect to this title online; UW restricted, 2008. http://hdl.handle.net/1773/10999.

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6

Estapa, Margaret L. "Photochemical Reactions of Particulate Organic Matter." Fogler Library, University of Maine, 2011. http://www.library.umaine.edu/theses/pdf/EstapaM2011.pdf.

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7

Koprivnjak, Jean-François. "Natural Organic Matter: Isolation and Bioavailability." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14564.

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Electrodialysis (ED) experiments were conducted on reverse osmosis (RO)-concentrated solutions of NOM from six rivers. The ED processes successfully recovered 88 11% of TOC, and removed 83% 19% of SO42- and 67% 18% of H4SiO4. More importantly, the molar ratios of SO42- /TOC and H4SiO4 /TOC were reduced to a mean value of 0.0046 and 0.032, respectively, surpassing the goal for removal of SO42- (0.008) and almost achieving the goal for removal of H4SiO4 (0.021). The ED process can lower the SO42- /TOC ratio in samples whose initial SO42- /TOC ratios are already far below the limit of 0.008

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8

Koprivnjak, Jean-Franȯis. "Natural organic matter isolation and bioavailability /." Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-04082007-154052/.

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Thesis (Ph. D.)--Earth and Atmospheric Sciences, Georgia Institute of Technology, 2007.<br>Perdue, E. Michael, Committee Chair ; Ingall, Ellery, Committee Member ; Stack, Andrew, Committee Member ; Nenes, Athanasios, Committee Member ; Pfromm, Peter, Committee Member.

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9

Bashir, Firdous Zahra. "Molecular characterization of sedimentary organic matter." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246697.

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10

Scott, Sharon Elizabeth. "Computational Approaches to Studying Organic Cation Sorption to Organic Matter." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1594139918499603.

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11

Faituri, Mikaeel Y. "Soil organic matter in Mediterranean and Scandinavian forest ecosystems : dynamics of organic matter, nutrients, and monomeric phenolic compounds /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2002. http://epsilon.slu.se/avh/2002/91-576-6320-3.pdf.

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12

Aziez, Mebarka. "The organic geochemistry of sedimentary organic matter from the Algerian Sahara." Thesis, University of Newcastle Upon Tyne, 1992. http://hdl.handle.net/10443/454.

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This study Is composed of three parts: (I) organic geochemical and organic petrological analysis of source rock samples from the Ghadames-El Borma basin are. described; (! I) organic geochemical characterisation of oils from a number of occurrences In Algeria has been carried out to give families or groups of different oil types; (iii) oiksource rock correlations In the Ghadames-El Borma basin between the oils In the Triassic reservoirs and, the putative source rock - sections are suggested. Sixty rock samples ranging from the-Triassic to Ordovician In age from the Ghadames-El Borma basin, hav

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13

Gordon, Kelly Jo. "Chromophoric dissolved organic matter in coastal rainwater /." Electronic version (PDF), 2007. http://dl.uncw.edu/etd/2007-1/gordonk/kellygordon.pdf.

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14

Pers, B. Charlotta. "Modelling organic matter dynamics in aquatic systems /." Linköping : Univ, 2000. http://www.bibl.liu.se/liupubl/disp/disp2000/arts214s.htm.

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15

Giannelli, Virginia. "Dissolved organic matter in the Southern Ocean." Thesis, Bangor University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247270.

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16

Reid, Seth Neil. "Chromophoric dissolved organic matter in coastal rainwater /." Electronic version (PDF), 2003. http://dl.uncw.edu/etd/2003/reids/sethreid.html.

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17

Loh, Pei Sun. "An assessment of the contribution of terrestrial organic matter to total organic matter in sediments in Scottish sea lochs." Thesis, Open University, 2005. https://pure.uhi.ac.uk/portal/en/studentthesis/an-assessment-of-the-contribution-of-terrestrial-organic-matter-to-total-organic-matter-in-sediments-in-scottish-sea-lochs(8882e1fb-99cb-410a-a94d-eecacc9b5897).html.

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The biogeochemical cycling of carbon in Lochs Creran and Etive was investigated by using lignin as the biomarker for terrestrial organic matter. The oxygen uptake rate, percentage organic matter due to loss on ignition, Rp index, total carbon, total organic carbon (TOC), total nitrogen, C/N ratio, and phosphate content were used as the proxies to determine the biodegradability of the sediment organic matter. Total lignin in Lochs Creran and Etive ranged from 0.03 to 0.55mg/g, and Λ (mg/100mg OC) ranged from 0.37 to 0.98; the syringyl/vanillyl and cinnamyl/vanillyl ratios for both lochs ranged

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18

Lønborg, Christian. "Bioavailability of dissolved organic matter in coastal waters." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=59094.

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19

Klemedsson, Shicarra. "Flocculation of natural organic matter in Swedish lakes." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-85118.

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Flocculation is an important part of the carbon cycle. It is therefore crucial to understand how flocculation is regulated and how different environmental factors impact. A dilemma is that it has been found difficult to measure flocculation experimentally. In this thesis, flocculation of dissolved organic carbon in a Swedish lake was measured in a series of laboratory experiments. The method used was Dynamic Light Scattering (DLS). DLS is used to determine the size distribution profile of, for instance, small particles in suspension. DLS measures Brownian motion and relates it to the particle

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20

Patriarca, Claudia. "Characterization of dissolved organic matter : An analytical challenge." Licentiate thesis, Uppsala universitet, Analytisk kemi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-341690.

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Dissolved organic matter (DOM) is the prevalent form of organic carbon in most aquatic environments. It is an ultra-complex mixture that plays a crucial role in global carbon cycling. Despite its importance it is still poorly understood due to its extreme heterogeneity and intricacy. Major advances in chemical characterization of DOM were possible with the introduction of high-resolution mass spectrometry (HRMS). This technique, in combination with direct infusion (DI) as sample introduction, is the most powerful tool for the DOM analysis to date. A compelling alternative to DI is represented

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21

Gonsior, Michael, and n/a. "Dissolved organic matter in New Zealand natural waters." University of Otago. Department of Chemistry, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080501.114023.

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Dissolved organic matter (DOM) is the most dynamic and least understood part of the global oceanic carbon cycle. Furthermore the molecular composition of DOM is largely unknown. This study focused on the distribution pattern, removal processes and molecular characterisation of DOM in a range of estuaries and coastal zones in New Zealand. Doubtful Sound, the longest fjord in Fiordland National Park, South Island, New Zealand was of particular interest, because of the combination of extreme rainfall, enhanced production of DOM within the temperate rainforest which largely appears in the relative

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22

Fonseka, K. C. M. (Kosmafonsekage Chintha Mirani) 1960. "Characterization of dissolved organic matter in industrial wastewaters." Monash University, Dept. of Chemistry, 2000. http://arrow.monash.edu.au/hdl/1959.1/8932.

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23

Cammack, W. K. Levi. "Dissolved organic matter fluorescence : relationships with heterotrophic metabolism." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29417.

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Characterizing dissolved organic matter (DOM) composition remains a major unresolved problem in aquatic ecology. "Tryptophan-like" dissolved organic matter fluorescence (FDOM) was found to be a much better predictor of heterotrophic bacterial metabolism in 28 Quebec lakes than dissolved organic carbon (DOC), describing 52, 44, 51 and 55% of the variability in bacterial production (BP), bacterioplankton respiration (BR), total bacterial carbon consumption (TBCC), and total plankton community respiration (CR), respectively. In addition, the study provides indirect support for the view that FDOM

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24

Perez-Castillo, Fernando. "Sedimentation of organic matter on the Hebridean slope." Thesis, Bangor University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287026.

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25

McKay, Garrett J. "Reactivity of the hydroxyl radical with organic matter." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527332.

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<p> The goal of this study was to investigate some of the fundamental chemistry of the reactions between the hydroxyl radical and apply this knowledge to the treatment of chemical contaminants in real world waters. To accomplish this goal, the techniques of electron pulse radiolysis were used to quantify second-order rate constants for the reaction between the HO<sup>· </sup> radical and well characterized OM samples. Studies of HO<sup>· </sup> radical reactivity with model polyethylene glycol polymers were performed to help understand OM-HO<sup>·</sup> reactivity. Experim

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26

Hutchison, John. "Structural studies of sulphur-rich sedimentary organic matter." Thesis, University of Bristol, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303759.

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27

McDonald, Adrian. "Fluorescence of dissolved organic matter in natural waters." Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243162.

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28

Fox, Bethany Gemma. "Bacterial processing of fluorescent organic matter in freshwater." Thesis, University of the West of England, Bristol, 2018. http://eprints.uwe.ac.uk/35535/.

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Organic matter (OM) is ubiquitous to all aquatic environments and plays an essential role in global biogeochemical cycles and transportation of organic carbon throughout the hydrological continuum. Excitation-emission matrix (EEM) fluorescence spectroscopy has been used to characterise naturally occurring aquatic fluorescent OM (AFOM), classifying this AFOM as either humic-like, derived from terrestrial sources, or protein-like, of microbial origin. The research here explores in situ bacterial-OM interactions and AFOM evolution over time by employing fluorescence techniques. Protein-like AFOM,

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29

Doohan, Thomas James. "Drivers of Soil Organic Matter Stabilization across Ohio." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1597941993038872.

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30

Palmer, S. R. "The analysis of organic matter in oil-shales." Thesis, Aston University, 1987. http://publications.aston.ac.uk/9724/.

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The organic matter in five oil shales (three from the Kimmeridge Clay sequence, one from the Oxford Clay sequence and one from the Julia Creek deposits in Australia) has been isolated by acid demineralisation, separated into kerogens and bitumens by solvent extraction and then characterised in some detail by chromatographic, spectroscopic and degradative techniques. Kerogens cannot be characterised as easily as bitumens because of their insolubility, and hence before any detailed molecular information can be obtained from them they must be degraded into lower molecular weight, more soluble com

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31

Lindgren, Paula. "The preservation of organic matter in impact craters." Thesis, University of Aberdeen, 2007. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU238018.

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The aim of this study is to attain a better understanding of the fate of carbon and the degree of preservation of organic matter in impacts craters. This topic is relevant to prebiotic chemistry, planetary exploration and panspermia. Three natural impact craters were investigated: The Eocene Haughton impact structure on Devon Island in the Canadian High Arctic, where the target is composed of a thick sedimentary sequence with pre-impact hydrocarbons, the Ordovician Lockne impact structure in central Sweden, where organic- and uranium-rich Alum Shale is present in the target, and the Pre-Caledo

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32

Christensen, Bent T. "Organic matter in soil : structure, function and turnover /." Tjele : Danish institute of agricultural sciences. Research centre Foulum, 2000. http://catalogue.bnf.fr/ark:/12148/cb388316309.

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33

Ogden, J. M. "Some effects of afforestation on soil organic matter." Thesis, University of Stirling, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375418.

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34

Simonetti, Gianluca. "Mechanisms of soil organic matter protection and sequestration." Doctoral thesis, Università degli studi di Padova, 2010. http://hdl.handle.net/11577/3422238.

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Soil organic carbon (SOC) protection processes have received much interest recently due to the possibility to enhance the carbon sink in agricultural soils with atmospheric CO2 reduction purposes. Further knowledge of these mechanisms is thus fundamental to promote effective C sequestration practices in terrestrial sinks, as recognized by Article 3.4 of the Kyoto Protocol. In a long-term experiment established in the early 1960s in north-eastern Italy, we used a combination of physical fractionation and chemical extraction techniques aiming to isolate homogeneous pools of SOC. In particular we

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35

Frankki, Sofia. "Association of organic compounds to dissolved and particulate natural organic matter in soils /." Umeå : Dept. of Forest Ecology, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200652.pdf.

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36

Williams, Stephen. "Soil transformations of added organic matter in organic farming systems and conventional agriculture." Thesis, University of Aberdeen, 1996. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU083669.

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The aim of this work was to assay the effects of previous history of organic amendment to soils in the field on the ability of those soils to mineralise mustard, a non-legume green manure. Soil and 15N labelled mustard mineralisation was followed in laboratory microcosms. Volatilised N was assayed by direct acid trapping of N in glass fibre disks, followed by direct combustion isotope ratio mass spectrometry. Animal manures, green manures and straw added to the soil in the field in the previous season, same season and for 7 years continuously did not significantly affect these soils' ability t

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37

van, Schaik Joris W. J. "Binding of metals to macromolecular organic acids in natural waters : does organic matter? /." Uppsala : Department of Soil and Environment, Swedish University of Agricultural Sciences, 2008. http://epsilon.slu.se/200872.pdf.

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38

Ding, Chunli. "Organic cation-modified iron oxide-coated sand for adsorption of natural organic matter /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202009%20DING.

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39

Etzkorn, Stephen J. "Magnetic relaxation in organic-based magnets." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1044548603.

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Thesis (Ph. D)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xvi, 134 p. : ill. (some col.). Includes abstract and vita. Advisor: Arthur J. Epstein, Dept. of Physics. Includes bibliographical references (p. 128-134).

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40

Gao, Huizhen. "A new approach to fractionation of natural organic matter - using ion retardation resin." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/29836.

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41

Payan, Zelaya Fidel Adolfo. "Effects of 'Erythrina poeppigiana' pruning residues on soil organic matter in organic coffee plantations." Thesis, Bangor University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420651.

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42

Huang, Pin-Ru. "The interaction of sedimentary organic matter with metals and organic pollutants in landfill barriers." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/396594/.

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This research examines the composition, sedimentary history and chemical properties of sedimentary organic matter [SOM] and its application in determining the content and source of heavy metals and hydrophobic organic contaminants [HOCs] and their fate in waste disposal sites. Previous research has utilised Oxford Clay (OxC) from across the outcrop. In this study a continuous shallow core of OxC and adjoining Kellaways Sand (KS) from Brogborough, UK was used. This avoided the influence of different sedimentary conditions, thereby reducing the problem of sample variability. Relationships have b

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43

Guppy, Christopher Neil. "Phosphorus and organic matter interactions in highly weathered soils /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17420.pdf.

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44

Tortajada, Navarro Andreu. "Nickel-Catalyzed Reductive Carboxylation and Amidation of Organic Matter." Doctoral thesis, Universitat Rovira i Virgili, 2020. http://hdl.handle.net/10803/670204.

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En els darrers anys, el desenvolupament de reaccions de carboxilació reductiva de (pseudo) halogenurs orgànics amb diòxid de carboni (CO") catalitzada per metalls per a la preparació d'àcids carboxílics s'ha convertit en una poderosa alternativa a l'ús d'èspecies organometàl·liques, en la majoria dels casos sensibles a l'aire. Tanmateix, l'ús d'alcohols simples no protegits o d'hidrocarburs insaturats en combinació amb CO" per obtenir àcids carboxílics mitjançant una reacció de formació d'un enllaç C-C han rebut molta menys atenció. Aquests representen una alternativa atractiva als halurs orgà

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45

Herrmann, Anke. "Predicting nitrogen mineralization from soil organic matter - a chimera? /." Uppsala : Dept. of Soil Sciences, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/a429.pdf.

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46

Odem, Wilbert Irwin Jr. "Natural Organic Matter Interactions with CU(II) in groundwater." Diss., The University of Arizona, 1991. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1991_471_sip1_w.pdf&type=application/pdf.

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47

Dennett, Keith Elliot. "Coagulation of natural dissolved organic matter using ferric chloride." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/21438.

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48

Matlack, Keith Scanlan. "Modeling the interaction of dissolved organic matter with cations." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/26215.

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49

Thoss, Vera. "Chemical characterisation of dissolved organic matter in natural matices." Thesis, Bangor University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310867.

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50

Toosi, Ehsan Razavy. "Soluble Organic Matter, its Biodegradation, Dynamics and Abiotic Production." Thesis, University of Canterbury. School of Forestry, 2010. http://hdl.handle.net/10092/5302.

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Soluble organic matter represent less than 1% of total soil organic matter (SOM) - but it contributes to many terrestrial ecosystem processes, due to its high mobility and reactivity in soil. Although it has been suggested that soluble organic matter (OM) may serve as an early indicator of soil quality changes as a result of shifts in land-use and management practices, only a few studies have addressed the dynamics of soluble OM in relation to land-use and specifically soil depth. This study focuses on two aspects of soluble OM. In the first part, I hypothesized that extractable OM obtained b

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