Log in

Relevant bibliographies by topics / Dissolved and particulate phases / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Dissolved and particulate phases.

Dissertations / Theses on the topic 'Dissolved and particulate phases'

Author: Grafiati

Published: 13 April 2024

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Dissolved and particulate phases.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Audoux, Thomas. "Approches expérimentales pour l’étude et la caractérisation des dépôts humides d’aérosols atmosphériques par les précipitations." Electronic Thesis or Diss., Université Paris Cité, 2022. http://www.theses.fr/2022UNIP7332.

Full text

Abstract:

Dans le cadre de mon travail de thèse, je me suis intéressé aux aérosols atmosphériques et à leur transfert de l’atmosphère vers les surfaces terrestres par les précipitations. La stratégie générale que j’ai suivie repose sur l’observation des dépôts humides sur différentes échelles de temps, interannuelle d’une part et intraévènementielle de l’autre. Elle repose aussi sur leur observation dans des environnements marqués en termes de charge et de composition en aérosols, mais aussi de dynamiques atmosphériques et de précipitations. Le fait de combiner des mesures à la fois sur la composition d

APA, Harvard, Vancouver, ISO, and other styles

2

Mudashiru, Liadi K. "Electrochemical determination of dissolved and particulate iron in mine-waters." Thesis, University of Newcastle Upon Tyne, 2009. http://hdl.handle.net/10443/1136.

Full text

Abstract:

A voltammetric procedure for the determination of dissolved and colloidal iron in mine-waters has been developed. Whilst mine-waters are of course enriched in iron. we are remarkably ignorant of the physical state and chemical speciation of the iron. This is a problem since the physical and chemical state of iron is central to understanding a range of processes relevant to mine-water geochemistry and remediation. Examples include hydrolysis of dissolved Fe (III) to release protons. the adsorption of trace metals onto iron colloids and the bioavailability of iron within wetlands designed to rem

APA, Harvard, Vancouver, ISO, and other styles

3

Laslett, Rebekah E. "Dissolved and particulate trace metals in the Forth and Tay estuaries." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/11033.

Full text

Abstract:

The estuarine biogeochemistries of Cd, Cu, Mn, Ni, Pb and Zn have been examined. Two adjacent, contrasting estuaries were selected to assess the effects of riverine discharge, hydrodynamic régime and particulate phase composition. Sampling throughout an annual cycle enabled seasonal differences in primary productivity and meteorological conditions to be included. Simultaneous nutrient determinations and fresh water flow measurements were used to assist in the interpretation of metal data. Dissolved Mn profiles in both estuaries are dominated by benthic inputs, a consequence of the reduction of

APA, Harvard, Vancouver, ISO, and other styles

4

Abell, Russell H. III. "Scavenging of particulate and dissolved lead compounds by coprecipitation with manganese oxyhydroxides." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36674.

Full text

Abstract:

Mn is a geochemically important element that contributes significantly to the cycling of heavy metals. During precipitation, Mn oxyhydroxides scavenge many heavy metals, including Pb, in a variety of natural environments. Because of this phenomenon, the precipitation of Mn oxyhydroxides may provide a remediation technique for removing Pb from contaminated aqueous solutions. Therefore, this study was undertaken to provide a quantitative understanding of the coprecipitation of Pb with Mn oxyhydroxides to demonstrate their capacity to remove Pb permanently from contaminated solutions. To acco

APA, Harvard, Vancouver, ISO, and other styles

5

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.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Dukes, Craig Harry. "Uptake of dissolved nutrients by Tetrahymena pyriformis in batch culture with particulate matter." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/10944.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Tucker, Ashley. "GLOBAL ASSESSMENT OF RADIOCARBON ISOTOPIC ANALYSIS FOR PARTICULATE AND DISSOLVED ORGANIC CARBON IN RIVERINE SYSTEMS." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/632.

Full text

Abstract:

Rivers are a significant source of particulate and dissolved organic carbon (POC, DOC) into inland waters and coastal systems and provide a fundamental linkage between the terrestrial, oceanic, and atmospheric carbon reservoirs. Recent studies have examined the relationship between the quantity and form (POC vs. DOC) of carbon delivered to the aquatic system; however, little is known about the age of POC and DOC exported and how the radiocarbon age may vary with latitude, topographic gradient, vegetation, and land use. I provide the first global synthesis of published radiocarbon values of POC

APA, Harvard, Vancouver, ISO, and other styles

8

Law, Ming-chu Cecilia, and 羅明珠. "The combined fouling of nanofiltration membranes by particulate solidsand dissolved organics in wastewater treatment and reuse." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43703689.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

McIntosh, Hadley Allaben. "Composition, Sources, and Age of Dissolved and Particulate Organic Matter in the Delaware River and Estuary." W&M ScholarWorks, 2013. https://scholarworks.wm.edu/etd/1539617941.

Full text

Abstract:

Estuaries are important sites of organic matter (OM) transformation, exchange, and burial but remain one of the least understood regions in the global carbon cycle. The carbon cycle within these regions is complex due to strong gradients in biological and physical processes, and increasing anthropogenic impacts. This is further complicated by the many sources of particulate and dissolved organic matter (OM) in estuaries, including materials derived from terrestrial and anthropogenic sources as well as aquatic and marine primary production. This study combined lipid biomarker analyses with stab

APA, Harvard, Vancouver, ISO, and other styles

10

Caulkett, Andrew Paul. "Studies of dissolved species and suspended particulate matter in the freshwater systems of Signy Island, maritime Antarctic." Thesis, Open University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311860.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Dawson, Julian J. C. "The controls on concentrations and fluxes of gaseous, dissolved and particulate carbon in upland peat dominated catchments." Thesis, University of Aberdeen, 2000. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU125517.

Full text

Abstract:

A programme of field sampling was undertaken to quantify total carbon fluxes (DOC, POC, HCO3, free CO2 and CH4) from peatland catchments in Glen Dye, NE Scotland and Plynlimon, Mid-Wales. This was integrated with temporal and spatial sampling to investigate controls on contrasting concentrations and fluxes and to determine carbon sources or sinks within the stream system. Microcosms containing radiolabelled ( 14C) biofilms were also used to investigate removal of DOC from streamwater. Carbon fluxes from acidic peatlands were dominated by DOC (115-215 kg C ha-1 yr-1) and POC (8.15-97.0 kg ha -1

APA, Harvard, Vancouver, ISO, and other styles

12

Law, Ming-chu Cecilia. "The combined fouling of nanofiltration membranes by particulate solids and dissolved organics in wastewater treatment and reuse." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43703689.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Zhang, Zhe-Xuan. "Dynamics of dissolved and particulate organic matter along the land-sea continuum of the Seine Estuary (France)." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS268.

Full text

Abstract:

Les estuaires sont des zones critiques d'un point de vue écologique, économique et biogéochimique, qui jouent un rôle important dans la régulation de la Matière Organique Dissoute (MOD) et de la Matière Organique Particulaire (MOP). À ce jour, la MOD et la MOP ont le plus souvent été étudiées séparément dans les estuaires, ce qui freine la compréhension de leur dynamique globale et du fonctionnement biogéochimique estuarien associé. L'objectif de cette thèse était de déterminer les sources, les transformations et le devenir de la MOP et de la MOD dans l’estuaire de Seine (Nord-Ouest de la Fran

APA, Harvard, Vancouver, ISO, and other styles

14

Lee, Mi-Hee [Verfasser], and Egbert [Akademischer Betreuer] Matzner. "Dynamics of dissolved and particulate organic carbon and nitrogen in forest ecosystems / Mi-Hee Lee. Betreuer: Egbert Matzner." Bayreuth : Universität Bayreuth, 2016. http://d-nb.info/1095663623/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Loh, Ai Ning. "Chemical, isotopic and microbial characterization of dissolved and particulate organic matter in estuarine, coastal and open ocean systems." W&M ScholarWorks, 2002. https://scholarworks.wm.edu/etd/1539791565.

Full text

Abstract:

Dissolved and suspended particulate organic carbon (DOC, POC), nitrogen (DON, PON), phosphorus (DOP, POP) and inorganic nutrient distributions and elemental ratios were measured and evaluated for the Atlantic, Southern, and Pacific Oceans. Results indicate that DOC is remineralized during mean deep-water transport from the North Atlantic to the North Pacific. Elemental ratios for both dissolved organic matter (DOM) and particulate organic matter (POM) indicate that organic N is preferentially remineralized compared with organic C, while organic P is preferentialy remineralized relative to both

APA, Harvard, Vancouver, ISO, and other styles

16

Chen, Hongwei. "Development of analytical methodologies for iodine species in gaseous and particulate phases of the coastal atmosphere." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976812096.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Lee, Sea-Hoon. "Processing of carbon fiber reinforced composites with particulate filled precursor derived Si-C-N matrix phases." [S.l. : s.n.], 2004. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11814256.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Le, Mellec Anne. "The canopy as source for dissolved and particulate organic matter (DOM, POM) - with a focus on mass outbreaks of phytophagous insects /." Aachen : Shaker, 2009. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=018961097&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Le, Mellec Anne. "The canopy as source for dissolved and particulate organic matter (DOM, POM) - with a focus on mass outbreaks of phytophagous insects." Aachen Shaker, 2008. http://d-nb.info/997950358/04.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Loh, Ai Ning. "Distribution, Partitioning and Fluxes of Dissolved and Particulate Organic Carbon, Nitrogen and Phosphorus in the Eastern North Pacific and Southern Oceans." W&M ScholarWorks, 1998. https://scholarworks.wm.edu/etd/1539617737.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Ahad, Jason Michael Elias. "Evaluating the origins and transformations of organic matter and dissolved inorganic nitrogen in two contrasting North Sea estuaries." Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/866.

Full text

Abstract:

In order to delineate the potential sources and to understand the main controls on the biogeochemical cycling of dissolved and particulate organic matter (DOM, POM) and dissolved inorganic nitrogen (DIN) during estuarine mixing, comprehensive seasonal geochemical and isotopic and surveys across the freshwater-tidal interface were carried out in the Tyne and Tweed Estuaries, NE UK. This study provided a contrast between a relatively pristine system (Tweed) with one that is heavily influenced by anthropogenic activity (Tyne). Geochemical and isotopic (13C, 14C and 15N) analyses demonstrated the

APA, Harvard, Vancouver, ISO, and other styles

22

Randall, Benjamin. "Characterisation and quantification of the fluxes of particulate and dissolved nitrogen in the unicellular diazotroph crocosphaera watsonii : towards a closed nitrogen budget." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS685.

Full text

Abstract:

Les flux importants de la phase N dissoute, qui renseignent sur les bilans globaux en N des diazotrophes individuels, sont mal compris. Cela est particulièrement vrai des diazotrophes récemment découverts, qui peuvent ne pas fonctionner selon des paradigmes préétablis. Crocosphaera watsonii est un de ces diazotrophes, que l'on trouve largement répandu dans les océans subtropicaux. Nous caractérisons ici les flux d'azote à la diazotrophie de Crocosphaera, y compris les flux de NO3-, NH4 + et de N organique dissous (DON). Nous visons également à utiliser nos résultats pour évaluer la précision d

APA, Harvard, Vancouver, ISO, and other styles

23

Hallberg, Magnus. "Treatment conditions for the removal of contaminants from road runoff." Doctoral thesis, Stockholm : [Byggvetenskap, Kungliga Tekniska högskolan], 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4386.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Svedén, Jennie B. "Cyanobacterial Nitrogen Fixation in the Baltic Sea : With focus on Aphanizomenon sp." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-132773.

Full text

Abstract:

Cyanobacteria are widely distributed in marine, freshwater and terrestrial habitats. Some cyanobacterial genera can convert di-nitrogen gas (N2) to bioavailable ammonium, i.e. perform nitrogen (N) fixation, and are therefore of profound significance for N cycling. N fixation by summer blooms of cyanobacteria is one of the largest sources of new N for the Baltic Sea. This thesis investigated N fixation by cyanobacteria in the Baltic Sea and explored the fate of fixed N at different spatial and temporal scales. In Paper I, we measured cell-specific N fixation by Aphanizomenon sp. at 10 ºC, early

APA, Harvard, Vancouver, ISO, and other styles

25

Jorge, Danilo Custódio. "Particulate carbon in the atmosphere: distribution aging and wet deposition." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/16829.

Full text

Abstract:

Doutoramento em Ciências e Engenharia do Ambiente<br>During the last decades a significant number of studies was performed about the cycling of carbonaceous matter in the atmosphere. Despite the efforts of the scientific community, a full understanding about the composition and formation of carbonaceous aerosol in ambient air was not yet achieved, reflecting the great variety of emitting sources and the complexity of transformation processes in the atmosphere. In addition, very little is known about a specific type of carbonaceous aerosol: the indoor carbonaceous aerosol. Removal of particulat

APA, Harvard, Vancouver, ISO, and other styles

26

Mellec, Anne le [Verfasser]. "The canopy as source for dissolved and particulate organic matter (DOM, POM) – with a focus on mass outbreaks of phytophagous insects / Anne le Mellec." Aachen : Shaker, 2009. http://d-nb.info/1159834970/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Sörensen, Malin Helena. "Mesostructured particulate silica materials with tunable pore size : Synthesis, characterization and applications." Doctoral thesis, KTH, Ytkemi (stängd 20081231), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10089.

Full text

Abstract:

Colloidal assemblies of surfactants and polymers in aqueous solutions have been used by human mankind for hundreds of years and they are of great importance in many of our technological processes, such as fabrication of soap and papermaking. Less than two decades ago the idea of using colloidal assemblies as templates of inorganic materials was borne. A new population of materials, referred to as surfactant templated materials, took form. These materials showed extraordinary properties such as monodisperse pore size distribution, large surface areas and pore volumes. The main focus of this t

APA, Harvard, Vancouver, ISO, and other styles

28

Haas, Peter Andrew. "Changes in concentration and composition of dissolved and particulate organic matter in the upper San Pedro River, Arizona, in response to changes in flow regime." Thesis, The University of Arizona, 2003. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0215_sip1_w.pdf&type=application/pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Kelsey, Scott Alan. "Impact of Land Use on Headwater Stream Organic and Inorganic Carbon Export in a Temperate Midwestern Experimental Watershed." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1460651004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Brown, Matthew T. "The distribution and behavior of dissolved and particulate aluminum in coastal waters of the northeast Pacific off Oregon and Washington and in the northern Gulf of Alaska /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2009. http://uclibs.org/PID/11984.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Campbell, Vivian. "The effect of chloride concentration and temperature on the partitioning of Cd, Cu and Pb between the dissolved and solid phases of an urban stormwater detention pond." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0005/MQ46007.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Minnis, Rochelle J. "Comparison of the use of single and multiple oxidants on the generation of particulate matter in water distribution systems derived from groundwater sources containing hydrogen sulfide and dissolved organics." [Tampa, Fla] : University of South Florida, 2005. http://purl.fcla.edu/usf/dc/et/SFE0001390.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Bibian, João Paulo Rambelli. "Caracterização hidrogeoquímica da microbacia de drenagem do córrego Barra Bonita, São Paulo." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/64/64135/tde-14032008-084944/.

Full text

Abstract:

O estudo da microbacia de drenagem do córrego Barra Bonita, (S: 22º 25\' 53,9\" ; O: 48º 32\' 34,8\") objetivou a caracterização de seus parâmetros hidrogeoquímicos utilizando-se os modelos de transporte de materiais nas fases dissolvida e particulada para identificar as relações entre os processos de ocupação do solo e qualidade da água. Pelo fato de não existir um zoneamento ambiental no município, este estudo foi pioneiro investigação da qualidade ambiental da microbacia, contribuindo diretamente em futuros planos de conservação e utilização de suas águas superficiais para abastecimento púb

APA, Harvard, Vancouver, ISO, and other styles

34

Roeske, Tobias [Verfasser], van der Loeff Michiel [Akademischer Betreuer] Rutgers, Michael [Akademischer Betreuer] Schlüter, and Wolfgang [Akademischer Betreuer] Bach. "Dissolved Barium and Particulate Rare Earth Elements as Tracers for Shelf-Basin Interaction in the Arctic Ocean / Tobias Roeske. Gutachter: Michael Schlüter ; Wolfgang Bach. Betreuer: Michiel Rutgers van der Loeff." Bremen : Staats- und Universitätsbibliothek Bremen, 2011. http://d-nb.info/1071898493/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Lee, Sea-Hoon [Verfasser]. "Processing of carbon fiber reinforced composites with particulate-filled precursor-derived Si-C-N matrix phases / Institut für Nichtmetallische Anorganische Materialien der Universität Stuttgart ... Vorgelegt von Sea-Hoon Lee." Stuttgart : Max-Planck-Inst. für Metallforschung, 2005. http://d-nb.info/97496963X/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Franks, Matthew James. "The Role of Soil Organic Matter and Fe- and Mn-(Oxy)Hydroxide Minerals in Agriculture: Implications on Nutrient Dynamics." Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1594151828787397.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Shreckhise, Jacob Hamilton. "Phosphorus Requirement and Chemical Fate in Containerized Nursery Crop Production." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/83893.

Full text

Abstract:

Environmental contamination issues related to phosphorus (P) in surface waters substantiates the need to identify minimally-sufficient P fertilization amounts for production of containerized nursery crops and better understand the effect of routine amendments (i.e., dolomite [DL] and micronutrient fertilizer [MF]) added to pine bark substrates on chemical fate of P fertilizer. Four studies were conducted to accomplish two overarching objectives: 1) determine the minimum P fertilization amount and corresponding pore-water P concentration needed to achieve maximal growth of common containerized

APA, Harvard, Vancouver, ISO, and other styles

38

Boithias, Laurie. "Modélisation des transferts de pesticides à l'échelle des bassins versants en période de crue." Phd thesis, Toulouse, INPT, 2012. http://oatao.univ-toulouse.fr/6988/1/boithias_partie_1_sur_2.pdf.

Full text

Abstract:

Les concentrations élevées en pesticides dans les eaux de surface drainant des bassins versants agricoles sont devenues une préoccupation majeure en Europe depuis une cinquantaine d'années. Les pesticides sont transférés dans l'environnement par différentes voies (le ruissellement de surface et de sub-surface, le flux de nappe), soit en solution soit adsorbés aux particules de sol en suspension dans l'eau. Les eaux de ruissellement et de percolation entraînent avec elles des charges de contaminants dont les concentrations en solution peuvent s'avérer toxiques pour la faune et la flore aquatiqu

APA, Harvard, Vancouver, ISO, and other styles

39

Hoare, Ana Maria. "From Source to Sink: An Isotopic Perspective on the Biogeochemical Relationship between the Everglades and Florida Bay." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3151.

Full text

Abstract:

Increasing human populations and activities in coastal areas have led to high nutrient loading and estuarine ecosystem decline. Natural hydrological patterns in South Florida have been drastically altered by changes in water management and land use practices. As a result Florida Bay has experienced a series of negative ecosystem effects including hypersalinity events, degradation of water quality, and harmful algal blooms and declines in upper trophic level populations. To remediate ecosystem decline in Florida's coastal ecosystems, the Comprehensive Everglades Restoration Plan proposes to re

APA, Harvard, Vancouver, ISO, and other styles

40

Cotte, Laura. "Devenir des éléments métalliques en milieu hydrothermal profond : partition dissous-particulaire effective et spéciation dans le mélange fluide hydrothermal-eau de mer précoce." Thesis, Brest, 2017. http://www.theses.fr/2017BRES0116/document.

Full text

Abstract:

Quarante ans après la découverte de la circulation hydrothermale profonde, les processus chimiques se produisant dans le mélange entre le fluide hydrothermal et l’eau de mer restent mal contraints. Ce travail de thèse, dont l’originalité repose sur l’utilisation systématique de la filtration in situ, présente le partitionnement effectif des éléments métalliques majeurs (principalement Fe, Cu, Zn, Ba et Ca) entre les phases dissoutes (< 0,45 μm) et particulaire (> 0,45 μm) dans le mélange précoce-intermédiaire de plusieurs fumeurs du champ hydrothermal Lucky Strike (37°N, MAR). Le comport

APA, Harvard, Vancouver, ISO, and other styles

41

Lanceleur, Laurent. "L’argent : sources, transfert et bioaccumulation : cas du système fluvio-estuarien girondin." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14270/document.

Full text

Abstract:

Les rejets d’argent (Ag) dans l’environnement liés à l’exploitation minière aux diverses applications industrielles (e.g. bijouterie, médecine, photographie, électronique et plus récemment les nanotechnologies) font de Ag un polluant historique et émergent, dont les transferts et les effets dans les milieux aquatiques sont largement sous-documentés. Ce travail présente un premier bilan des sources, du transfert et de la bioaccumulation de Ag dans le système fluvio-estuarien de la Gironde. Le continuum Lot-Garonne-Gironde, connu pour une pollution polymétallique (e.g. Cd, Zn) provenant du bassi

APA, Harvard, Vancouver, ISO, and other styles

42

Harvey, Therese. "Bio-optics, satellite remote sensing and Baltic Sea ecosystems : Applications for monitoring and management." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-119578.

Full text

Abstract:

Earth observation satellites cover large areas with frequent temporal repetition and provide us with new insight into ocean and coastal processes. Ocean colour measurements from satellite remote sensing are linked to the bio-optics, which refers to the light interactions with living organisms and dissolved and suspended constituents in the aquatic environment. Human pressures have changed the aquatic ecosystems, by, for example, the increased input of nutrient and organic matter leading to eutrophication. This thesis aims to study and develop the link between bio-optical data and the remote se

APA, Harvard, Vancouver, ISO, and other styles

43

Estrela, Sílvia Regina Marques Faria. "Wildfire effects on forest soil organic matter stocks and losses by runoff." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/19151.

Full text

Abstract:

Doutoramento em Ciências e Engenharia do Ambiente<br>O solo é considerado o maior reservatório de carbono (C) global e, um importante sumidouro de CO2 atmosférico. Os incêndios florestais são um fenómeno frequente nos ecossistemas mediterrânicos, em especial em Portugal. Nas últimas décadas verificou-se um aumento do número de incêndios e os cenários de alterações climáticas sugerem que os regimes de incêndios se poderão intensificar no futuro. Os incêndios florestais podem provocar efeitos importantes a curto e médio prazo em fatores chave da qualidade do solo, tais como a quantidade e

APA, Harvard, Vancouver, ISO, and other styles

44

Ordou, Niloofar. "Investigation of Physiochemical Properties of Size-resolved Biomass Burning/Local Wildfire Aerosols." Thesis, Griffith University, 2021. http://hdl.handle.net/10072/410471.

Full text

Abstract:

Overall, particulate matter (PM) and household air pollution are at the root of 2.9 million deaths annually. One of the sources of particulate matter is biomass burning (BB) smoke. These particles can be formed by natural fires, prescribe agriculture fires, and as a result of burning fuel for cooking and heating houses. BB smoke particles can have various health effect and environmental impacts depending on a number of factors. Altering ozone refraction, they can act as cloud condensation nuclei. Health risks associated with these particle have been studied for long. Pulmonary, heart, carcinog

APA, Harvard, Vancouver, ISO, and other styles

45

Sabetraftar, Karim, and Karim Sabetraftar@anu edu au. "The hydrological flux of organic carbon at the catchment scale: a case study in the Cotter River catchment, Australia." The Australian National University. Centre for Resource and Environmental Studies, 2005. http://thesis.anu.edu.au./public/adt-ANU20070502.141450.

Full text

Abstract:

Existing terrestrial carbon accounting models have mainly investigated atmosphere-vegetationsoil stocks and fluxes but have largely ignored the hydrological flux of organic carbon. It is generally assumed that biomass and soil carbon are the only relevant pools in a landscape ecosystem. However, recent findings have suggested that significant amounts of organic carbon can dissolve (dissolved organic carbon or DOC) or particulate (particulate organic carbon or POC) in water and enter the hydrological flux at the catchment scale. A significant quantity of total organic carbon (TOC) sequestered t

APA, Harvard, Vancouver, ISO, and other styles

46

Chu, Housen. "Response and Biophysical Regulation of Carbon Fluxes to Climate Variability and Anomaly in Contrasting Ecosystems." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1418393261.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Ahlström, Matilda. "Undersökning av turbiditet och föroreningars sammansättning i urbana vatten." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445502.

Full text

Abstract:

Stormwater is water that originates from snow or rainfall and that cannot naturally infiltrate the soil. When stormwater flows from hard surfaces it can transport different pollutants to watercourses. By measuring turbidity continuously and using the relationship between turbidity and pollutants the pollutant levels can be estimated. The aim of this study was partly to investigate the relationship between turbidity and phosphorus, metals and PAHs in stormwater in three catchment areas. This study also aimed to investigate how the distribution between dissolved and particulate bound concentrati

APA, Harvard, Vancouver, ISO, and other styles

48

Caselles, Osorio Aracelly. "Influence of the characteristics of organic matter on the efficiency of horizontal subsurface-flow constructed wetlands." Doctoral thesis, Universitat Politècnica de Catalunya, 2007. http://hdl.handle.net/10803/7054.

Full text

Abstract:

Los sistemas de humedales construidos de flujo subsuperficial horizontal (HCFSS) constituyen una tecnología válida para la depuración de aguas residuales urbanas. Uno de los principales objetivos de estos sistemas es eliminar la materia orgánica, los sólidos y los nutrientes presentes en el agua residual decantada. La materia orgánica mineral contenida en el agua residual se compone de una mezcla compleja de sustancias de diferentes tamaño y composición química. En sistemas de tratamiento convencionales se ha demostrado que la istribución de tamaños de partículas del agua residual afluente

APA, Harvard, Vancouver, ISO, and other styles

49

Beghoura, Houda. "Modélisation de l'impact du Fer particulaire d'origine sédimentaire sur les cycles biogéochimiques marins Air‐sea turbulent fluxes from a wave‐following platform during six experiments at sea, in JGR Oceans 124 (6), June 2019 Impact of inorganic particles of sedimentary origin on global dissolved iron and phytoplankton distribution, in JGR Oceans 124 (12), December 2019." Thesis, Brest, 2020. http://www.theses.fr/2020BRES0001.

Full text

Abstract:

Il existe encore des incertitudes importantes concernant le cycle biogéochimique du fer, sa nature et la quantification de ses sources. Ce fer dissous (dFe) est considéré comme étant la forme la plus biodisponible ce qui a induit la sous-évaluation du rôle du fer particulaire (pFe) comme une source potentielle de dFe. Pourtant, la remise en suspension des sédiments libère davantage de pFe que de dFe. Dans ce contexte, ma thèse remet en question la vision traditionnelle du rôle du fer particulaire inorganique sédimentaire (pFeinorg) et propose la première modélisation de ce dernier comme source

APA, Harvard, Vancouver, ISO, and other styles

50

Hayzoun, Hanane. "Caractérisation et quantification de la charge polluante anthropique et industrielle dans le bassin du Sebou." Thesis, Toulon, 2014. http://www.theses.fr/2014TOUL0007/document.

Full text

Abstract:

L’objectif principal de ce travail de thèse est d’évaluer l'impact des activités anthropiques sur le fonctionnement des systèmes aquatiques. L’impact des rejets urbains de Fès sur le Sebou, l'une des plus grandes rivières du Maroc, a été choisi pour cette étude. Les eaux usées domestiques et industrielles de la ville de Fès (~1M hab), véhiculées par son affluent l’oued Fès, sont rejetées dans le Sebou quasiment sans traitement. Deux sites du Sebou, en amont et en aval des rejets de la ville de Fès, et un site situé sur l’oued Fès ont été étudiés. Une campagne de prélèvement de carottes de sédi

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!