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 18 of 18 for “"elemental content"”.
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Elemental content to rice grain related to growing regions and soil microbiology
… rice is the major source of essential micro elemental nutrients for those people. Mobility and the availability of those trace elements, uptake of trace elements by rice plants and transferring them into rice grain is not fully understood yet. This study was mainly focused on the variability …
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Elemental Stoichiometry of Freshwater Hyporheic Microorganisms
… focuses on the bacterial diversity including elemental stoichiometry along a hyporheic flowpath underlying the Nyack floodplain. We isolated and characterized 44 bacterial strains, sampled microbial biofilm communities across the floodplain, characterized the bacterial isolates and determined …
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Elemental Stoichiometry of Freshwater Hyporheic Microorganisms
… focuses on the bacterial diversity including elemental stoichiometry along a hyporheic flowpath underlying the Nyack floodplain. We isolated and characterized 44 bacterial strains, sampled microbial biofilm communities across the floodplain, characterized the bacterial isolates and determined …
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CO2 sequestration using brine impacted fly fish
… out to evaluate the differences in the total elemental content in both the fresh ash and the carbonated solid residues. The results suggested that South African FA from Secunda belongs to class F based on the CaO content as well as the total alumina, silica and ferric oxide content, while the …
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Sustainable treatment of oil contaminated waste: oil-based mud (OBM) drill cuttings and soil.
… by laser diffraction and sieve, morphology and elemental content (qualitative) by Scanning Electron Microscope – Energy Dispersive X-ray Analysis (SEM-EDXA), elemental content by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) analysis (quantitative), hydrocarbon profile by …
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The effects of oak cask previous use, origin and filling strength in the maturation of Scotch Whisky
… matter derived from the coring process underwent elemental analysis.<br/><br/>During the 22-month period the casks were sampled at 3, 9 and 22 months. These samples were analysed by high performance liquid chromatography (HPLC) and gas chromatography with coupled mass spectrometry (GC-MS) for a …
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Investigation of the Relationship Between Particulate Bound Mercury and Properties of Fly Ash in a Full-Scale 100 MWE Pulverized Coal Combustion Boiler
… (Hgp), unburned carbon, loss on ignition (LOI), elemental content and specific surface area (SSA). Different types of software, such as Microsoft Excel, Minitab and Origin, were applied to build the regression models to evaluate the relationship between Hgp and fly ash properties. The results of …
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Responses of respiratory system cells in vitro and in vivo to petrochemical combustion-derived ultrafine particles
… vary greatly in origin, size, surface area, and elemental composition; and a given particle type, such as those generated by petrochemical (gasoline, diesel, industrial substrate) combustion, may be coated with many other compounds, including polynuclear aromatic hydrocarbons (PAHs). Our …
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Using the growth patterns and geochemistry of coralline red algae to develop proxies for paleoclimate reconstruction in tropical and subarctic environments
… studies to develop paleo-archives. The trace elemental content of the GOP rhodoliths revealed that the Mg/Ca and P/Ca ratios were recorded congruently with the number of sub-annual growth bands produced during the experiment for 50% of the sample group. Both the Mg/Ca and P/Ca show moderate …
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Oligotrophication of downwind boreal lakes caused by oil sands-derived enhanced nutrient deposition
… lake geochemistry (C and N stable isotopes and elemental content) and algal assemblages (fossil pigments) over the past ~100 years. Surveyed lakes were either nitrogen (N)- or phosphorus (P)-limited and were located either within an impacted area receiving enhanced AOSR-derived deposition or …
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An analysis of the outer membrane of desulfovibrio vulgaris (Woolwich)
… is substantiated by X-ray microanalysis of the elemental content extracted LPS. The evidence indicates that LPS may be involved in Fe(II) uptake by the cells. LPS also takes part in the adhesion of D.vulgaris (Woolwich) to mild steel surfaces. This is demonstrated by the data from experiments …
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Soil Management for Improved Rice Production in Casamance, Senegal
… split-plot design. Plant tissue was sampled for elemental content. The water table was above the surface and was saline during half of the growing season in 2014, and decreased after rice grain head emerged. Planting methods and amendments did not have an effect on yield in 2014, but biochar …
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Investigating the Effects of Particle Loading and Agglomeration on Respirable Coal Mine Dust Particle Classification by SEM-EDX
… particles. In addition, the EDX can determine elemental content, which can be used to infer mineralogy. However, particle classification can be impacted by interferences due to particle loading density (PLD) and agglomeration. PLD refers to the number of particles per unit area of substrate, …
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Dissolved phosphorus removal in denitrifying bioreactors: field and laboratory studies
… testing with wood species containing varied elemental composition. Nine of the eleven site-years from the full-size bioreactors showed a DRP removal between 2-50% at the edge of the field, corresponding to 0.7-491 g P removed/ha (drainage areas of 2.8-20 ha). Two bioreactors showed P leaching …
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MEMS Technologies for Energy Harvesting and Sensing
… combined to realize a model for predicting the elemental content of any thin film system. (3) We developed in house capability for strain analysis of magnetostrictive thin films using laser Doppler Vibrometry (LDV). We determined a methodology to convert the displacements measurements of AC …
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Investigating the influence of vehicular traffic on a major trunk road on rural air quality
… activities. The aim was to determine the elemental content and trends within the samples and to investigate the influence of distance from the road, height from ground level, and sampling season on the elemental levels. The levels of Al, As, Ba, Ca, Si, Mg, S, Cd, Cr, Na, Ni, Sb, Se, Sn, …
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Factors controlling bacterial abundance, biomass and growth at the Bermuda Atlantic time-series site
… This study is the first to present single cell elemental C, N and P measurements from natural bacteria in the Sargasso Sea. A wide range in elemental content was found between single cells and this could be expressed as a function of the cell size. By applying an average cell volume, an annual …
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A nutritional evaluation and optimisation of infant foods using microencapsulation
… needs to be addressed. Therefore the nutritional content of these food products needs to be assessed to ascertain whether or not infants are meeting dietary requirements when consuming such products. The aims of this study were to evaluate the nutritional suitability of infant food products …