Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"Suspended particulate matter"”.
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Studying physical and biological aspects of coastal suspended particulate matter (SPM) dynamics using a novel distribution-based flocculation (DBFloc) model
Die Dynamik von Schwebstoffen (SPM) ist für das Verständnis von biogeochemischen Prozessen in Küstengewässern von enormer Bedeutung. In der Arbeit wurde das neuartige, verteilungsbasierte Flockulationsmodell DBFloc entwickelt, das die Dynamik der mittleren Größe der SPM-Aggregate beschreibt. Das …
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A comparison of suspended particle size and sediment loading produced by artificial and seaweed diets in integrated flow-through and re-circulating aquaculture systems on a commercial South African abalone farm
… the potential disadvantage to increase the suspended particulale concentration in the tank environment, with subsequent negative effects on abalone health. This study ties in with an existing Swedish-South African joint project. The results of this study will be used as inputs when trying to …
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Freshwater Mussels as Biofilters
… filter feeders, removing phytoplankton and other suspended particulate matter from the water. The removal of suspended matter from water is often considered desirable, in order to reduce algal blooms and in the treatment of drinking water. This thesis investigates the potential role of freshwater …
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Transformations of carotenoids in the oceanic water column
… reactions that transform organic matter, the types and relevant time scales of reactions that transform carotenoid pigments in the oceanic water column were studied. Suspended particulate matter collected from surface waters of Buzzards Bay, Massachusetts and the Peru upwelling …
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Measurement and behaviour of heavy metals in the marine environment of Singapore
… the levels of metals in the dissolved phase, suspended particulate matter and marine sediments are considered to be low in Singapore. With respect to heavy metal contamination, mangrove habitats in Singapore are less contaminated than those found in Deep Bay, Hong Kong and in Brazil, but more …
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Comparative particulate sampling methods
… methods of determining the mass concentration of suspended particulate matter in ambient air. Most of these methods, including the EPA reference method, require manual filtering and weighing of the collected sample. This is both costly and time-consuming and is subject to a considerable amount of …
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Application of multiple information sources to prediction of engine time on-wing
… and provides an indication of the relationship suspended particulate matter and engine degradation. The potential effects on the airline industry from city based severity in maintenance contracts are explored. Application of multiple information sources requires both knowledge of the system, and …
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Estimation of Pm-10 from vacant lands in the Las Vegas valley
… Vegas Valley is a serious nonattainment area for suspended particulate matter less than 10 microns in aerodynamic diameter (PM-10). The question is whether the amount of fine particulates less than 10 {dollar}\mu{dollar}m in the soil can be used to predict the amount of PM-10 entering the air …
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The marine biogeochemistry of molybdenum
… Mo distributions, but may slightly affect Suspended Particulate Matter (SPM) distributions. Mean SPM Mo:C ratios were slightly elevated in regions of N2 fixation and denitrification.. A high precision (=/+ 0.5%) isotope dilution ICP-MS method for measuring Mo was developed to re-evaluate …
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ADVANCING METHODS FOR APPORTIONING THE SOURCES OF SEDIMENT IN RIVERS: COMBINING SPECTROSCOPY AND STABLE ISOTOPES WITH BAYESIAN MIXING MODELS
… and a lack of attention given to organic matter provenance. Addressing these deficiencies, a combined X-ray fluorescence spectroscopy (XRFS) and diffuse reflectance infra-red Fourier transform spectroscopy (DRIFTS) approach is developed to rapidly, accurately and non-destructively analyse …
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Unifying ecosystem concepts and mercury biomagnification in an estuarine environment using stable isotopes (delta-carbon-13 and delta nitrogen-15).
… and delta15N were obtained for sediments, suspended particulate matter (SPM), plants, and animals found in the Miramichi River Estuary (New Brunswick, Canada) and used to show the relationship between food web structure and patterns of mercury biomagnification. On a delta13C and delta15N …
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The marine biogeochemistry of molybdenum
… Mo distributions, but may slightly affect Suspended Particulate Matter (SPM) distributions. Mean SPM Mo:C ratios were slightly elevated in regions of Nz fixation and denitrification. A high precision (±0.5%) isotope dilution ICP-MS method for measuring Mo was developed to re-evaluate the …
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Assessment of the effects of greywater discharge by using streeter-phelps model
… in the drain. The organic pollutants and suspended particulate matter from greywater may cause depletion of oxygen content in the water which lead to unpleasant odours and increased organic matter degradation time. The aim of this study is to assess the effect of greywater discharged using …
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PARTICLE-WATER INTERACTIONS OF HYDROPHOBIC ORGANIC MICROPOLLUTANTS IN MARINE SYSTEMS
… played by the main estuarine variables (organic matter, suspended particulate matter [SPM], particle type and salinity) on HOM behaviour was investigated by employing samples from estuaries with different geochemical signatures (Chupa, Russia, and the Dart, Plym, Beaulieu and Carnon, U K ) . A …
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Trace Metal Biogeochemistry in the Western North Pacific
<p>Dissolved and suspended particulate samples collected during the Intergovernmental Oceanographic Commission 2002 Contaminant Baseline Survey were analyzed to determine the surface and vertical distributions of Cd, Co, Cu, Mn, Ni Zn and Pb across the western and central North Pacific.</p> …
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Identification and characterisation of submesoscale activity over the continental shelf in the Bay of Biscay
… concentration, Sea Surface Temperature and Suspended Particulate Matter in view of identifying and characterizing submesoscale activity developing in the vicinity of the Loire River. A 10-year dataset (2003-2013) was explored and satellite ocean colour images revealed a spatial variability …
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Evaluation of a semi-analytical approach to the retrieval of water quality parameters from optical data in European coastal Case-II waters
… parameters chlorophyll-a, yellow substance and suspended particulate matter from spectra of remote sensing reflectance in European coastal waters. We study the suitability of a semi-analytical algorithm for the retrieval of these parameters in coastal waters to investigate the validity of …
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Particle-Water Interactions of Ni and Zn in Coastal Waters
Samples of suspended particulate matter (SPM) and sediment were collected from the Humber coastal zone during six seasonal and inter-annual surveys (November 1993 - July 1995) on board RRS Challenger as part of the NERC Land Ocean Interaction Study (LOIS) initiative. Concentrations of Ni, Zn, Fe …
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ASSESSMENT OF THE RELATIONSHIP BETWEEN OUTDOOR AND INDOOR CONCENTRATIONS OF AIRBORNE PARTICULATES IN RESIDENTIAL BUILDINGS IN SINGAPORE
… of the CPC provided near real-time data of suspended particulate matter (PM) with the instrument at fixed locations. An activity-time log was strictly adhered to in order to relate changes in particle number concentrations to the various activities within the apartment. The results indicated …
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The marine geochemistry of thorium and protactinium
Suspended particulate matter was collected by sediment traps deployed in the Sargasso Sea (Site S2), the north equatorial Atlantic (Site E), the north equatorial Pacific (Site P), and the Panama Basin (STIE Site). Additional samples of suspended particles were obtained by in situ filtration at Site …
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