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 54 for “"Concentration Ratio"”.
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The Marine Geochemistry of Selenium
… and at 234 pM for total selenium.</p> <p>The concentrations of both total selenium and Se (IV) decreased with increasing salinity in the surface waters of the James River and southern Chesapeake Bay. While total selenium seemed to exhibit conservative behavior at salinities above 0.36 ('o)/oo, …
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Photocatalytic degradation of palm oil mill secondary effluent (POMSE) using zinc oxide nanoparticles
… bonds for ZnO-PEG, besides having less agglomeration and smaller average in size (25-150 nm) compared to Commercial ZnO and ZnO-PVP. ZnO-PEG nanoparticles have a great potential in degradation of POMSE and this is supported with the results evaluated from four potential factors which are (A) …
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Mass transfer with second-order chemical reaction inside circulating fluid droplets
… the Peclet number, reaction number, diffusivity ratio, concentration ratio, and the dimensionless contact time. The results of this work are compared with the film and penetration theories for mass transfer with reaction as modified to apply inside a fluid sphere. This work corrects the three …
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Ultra thin micro solar cells with concentration optics: fabrication, modeling and characterization
… for utility scale photovoltaic power generation is the cost – efficiency dilemma. For high efficiency cells, made of high quality crystalline semiconductor, their price is high, and for low cost cells, such as organic PV, their efficiency is not sufficient. One way of reducing the cost is …
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A synthesis of a homologous series of aryl mono- and diboronic acids
… boronic acid derivatives with increased tumor concentration (3,4,5). However, most of these organoboron compounds do not produce a sufficiently high tumor-to-normal tissue boron concentration ratio for practical use in human cancer chemotherapy by the neutron capture technique.</p>The knowledge …
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Quantum dot polymer composite materials for light management in optoelectronic devices
… greater than the area of the photovoltaic cell, concentration of the solar photon flux is achieved. Approaching high concentration ratio will require a luminophore with large Stokes Shift, high quantum yield, minimal overlap between absorption and emission, and a narrow emission spectrum. We have …
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Energy Distribution of Sputtered Neutral Atoms from a Multilayer Target
… for this study was ideal due to an extreme concentration ratio gradient between the top two monolayers. In pursuing this study, the method of sputter-initiated resonance ionization spectroscopy (SIRIS) was utilized. SIRIS employs a pulsed ion beam to initiate sputtering and tunable dye …
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Prototype dynamic tool for the assessment of radiological exposure to non-human biota in a coastal heath dune ecosystem
… available in the scientific literature: the Concentration Ratio, biological half-life, and mass values for the organism and soil.
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Synthesis of a Highly Porous Polyethylene Membrane Support by Electrospinning- Optimization of the Parameters Involved
… mat,which was to be used as a membrane in pervaporation. For the first time,chlorobenzene combined with tetraoctyl ammonium bromide salt was used as asolvent for electrospinning polyethylene. Polyethylene fiber mat was generated by solution electrospinning technique, and by maintaining the …
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"the Effects Of Competition Policy Changes On International Trade And Export Flows: Canada Case Estimates"
… Canadian competition policy, as measured by the concentration ratio of the four largest firms' market share, is inversely and significantly related to the industry's exports, while controlling for other important export determinants. Furthermore, we find that the effect of competition policy …
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Enhancing the engineering properties of expansive soil using bagasse ash, bagasse fibre and hydrated lime
… of FRLTP properties, and the improvement depth ratios of soft soils, have been carried out to assess the behaviour of the columns supported embankment with FRLTP. The findings of the extensive parametric study indicated that the platform thickness has a significant influence on the embankment …
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Optical and Thermal Analysis of a Heteroconical Tubular Cavity Solar Receiver
… receiver for different geometric configurations. The effect of cavity geometry on the heat flux distribution on the receiver absorbers as well as on the optical performance of the Heteroconical cavity was investigated. The cavity geometry was varied by varying the cone angle and cavity …
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Essays on European Banks' Consolidation, Integration and Systemic Risk
… we find some evidences that size, liquidity ratio, efficiency, leverage ratio, tier 1 ratio, concentration ratio, capital regulatory power and supervisory power are the main determinants of acquirers’ performance changes after M&As. Secondly, we obtain that interest rate difference between …
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Development of an Ionically-Assembled On-Column Enzyme Reactor for Capillary Electrophoresis
This work describes the integration of a separation capillary for capillary electrophoresis (CE) with an on-column enzyme reactor for selective determination of the enzyme substrate. The enzyme reaction occurs during a capillary separation, allowing selective determination of the substrate in …
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Treatment of Ischemic Equine Jejunum with Topical and Intraluminal Carolina Rinse
… vascular permeability and neutrophil infiltration in reperfused equine small intestine. The objective of this study was to show that CRS applied topically and intraluminally could prevent immediate reperfusion injury after low flow ischemia or distention in the equine jejunum. Materials & …
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Chloride Salts Removal by non Planted Constructed Wetlands Receiving Synthetic Brines from Belle Plaine Potash Mining
… of the brine solution are made up with a 10:1 concentration ratio between NaCl and KCl based on data obtained from Belle Plaine potash mine site. The multi-layer soils were designed to function as a main salt filtering component comprising of Regina Clay (grain size <0.002 mm), Brick Sand …
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Single nephron structure and function, and renal effects of catecholamines in the dogfish, Scyliorhinus canicula
… urinary diuresis, and increased glomerular filtration rate. Urine to plasma inulin concentration ratios, relative clearance of osrnolytes and relative free water clearance were unchanged by adrenaline. 9. Anaesthesia significantly reduced urinary output. 10. Micropuncture techniques were used to …
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Continuous chromatographic biochemical reaction-separation
Combined bioreaction separation studies have been carried out for the first time on a moving port semi-continuous counter-current chromatographic reactor-separator (SCCR-S1) consisting of twelve 5.4cm id x 75cm long columns packed with calcium charged cross-linked polystyrene resin (KORELA V07C). …
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Micron-bubble streaming flow towards micron to sub-micron sized sorting
… sorting. It has been proved that relative concentration ratio of two sized particle mixing solution can be enhanced with almost a factor of 6, and can be further improved by sequential bubble sorting. However, sorting application with smaller particles with diameter as 1μm and 100nm doesn’t …
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Nitrous oxide as a substitute for sulfur hexafluoride in the ANSI/ASHRAE 110 Method of hood performance evaluation
… of each tracer gas. Direct comparisons of the concentrations of the two gases were dominated by a few high concentrations. For this reason, concentrations of both gases were log1O-transformed for statistical analyses. Laboratory hood dimensions and properties were found to affect the …
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