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Showing 1 to 20 of 20 for “"Mixing Effects"”.
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Interaction and Mixing Effects in Two and One Dimensional Hole Systems
… energy is suppressed, which makes interaction effects particularly important. Holes may also be used to study band structure effects which arise from spin-orbit coupling in the valence band. The effects of Coulomb interactions in low dimensional electron systems are currently being studied …
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Analysis of various fuels in DISI and PFI engines : separating mixing effects from crevice and quench layer effects
… cylinder chambers and can be caused by quenching effects or poor mixing. A system was set up to determine the significance of mixing in producing high concentrations of UBHC. A GM 2009 LNF Ecotec was modified to run PFI and DISI under operating conditions representative of cold start for …
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Electronic and optical properties of semiconductor quantum wells
… are strongly hybridized and this subband mixing has important effects on electronic and optical properties. A systematic study of the mixing effects on valence subband structure, exciton binding energies and oscillator strengths, and absorption spectra is undertaken using a multiband …
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Hot jet ignition delay characterization of methane and hydrogen at elevated temperatures
… hot jet ignition delay considerably. Physical mixing effects, and density of the main chamber mixture have a greater effect on hot jet ignition delay.
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The Scalability of X3D4 PointProperties: Benchmarks on WWW Performance
… point size attenuation and texture-color mixing effects to point geometries. In this work, we propose an X3DOM implementation of PointProperties. This implementation fulfills not only the features specified in X3D 4.0 documentation, but other shading effects comparable to the effects of …
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Application of synchronisation theory to plankton patchiness
… populations interacting through the stirring and mixing effects of the flow. The methods of synchronisation theory are applied within this framework to gain insight into emergent spatial structure in biophysical simulations. The manifestation of synchronisation, including statistically stable …
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New methods of observation and characterization of fractional quantum Hall states
… is quite restricted because of Landau level mixing effects. However, within that region we find the conditions under which the Pfaffian is more stable than in the conventional "non-relativistic" systems. These conditions can, in principle, be realized experimentally. In the second chapter we …
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Full-profile inversion of ionospheric radar data from Arecibo observatory
… data. One approach to mitigate the “height mixing” effects involved in long pulse experiments is to conduct full profile analysis, which attempts to fit the spectra recorded from all radar ranges simultaneously with a large number of “unknowns” covering all the probed heights of the …
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Investigating the Effects of Sparger Design in Column Photobioreactors
… PBR, the sparger is responsible for all the mixing effects as no additional mechanical device is used to facilitate the mixing. Sufficient mixing helps distribute radiation evenly to all the cells, and also allows the cells to get the various nutrients they need. Mixing improves productivity …
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Coupling of Chemical Kinetics with Computational Fluid Dynamics in a Three-Dimensional Engine Model
… prediction mainly due to the lack of turbulent-mixing model, inherent in the perfectly-stirred reactor formulation. In addition, the model is sensitive to intake conditions and experimental uncertainties which require implementation of enhanced predictive tools. It is recommended that future …
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Development of rotary reactor for evaluation of feedstock mixing effect on hydrothermal liquefaction
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Radio frequency and terahertz signals generated by passively mode-locked semiconductor lasers
… of a gain medium resulting in the four-wave-mixing effects, are responsible for the phase synchronisation and lead to phase locking. The repetition rate of the generated signal is fixed by the free-spectral range of the longitudinal spectrum. Therefore, with a passively mode-locked laser …
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The Effect of Operating Conditions on Gas Holdup and Mixing in Tower Fermenters
… used. Indeed it was noticed that these effects could, in some cases, dominate the effects of other operating parameters. Mixing studies in the Liquid phase have also been carried out. A steady—state tracer injection method was used and concentration profiles were measured over the length …
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Experimental investigation of nitrogen oxide production in premixed reacting jets in a vitiated crossflow
… ϕFlame is influenced by ϕjet and pre-flame mixing of the jet and crossflow that, in turn, is a function of flame lift-off distance (LO), nozzle geometry, and crossflow temperature. The data highlights the importance of flame lifting as well as the potential importance of post-flame mixing …
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Thermodynamic Interactions in Polydiene/Polyolefin Blends
… proposed to originate from non-random mixing effects in the enthalpic contribution to the interaction parameters, which are not included in the theory. Blends were also examined containing random copolymers of polydienes and polyolefins, in order to modulate the large …
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Manifold learning based spectral unmixing of hyperspectral remote sensing data
<p>Nonlinear mixing effects inherent in hyperspectral data are not properly represented in linear spectral unmixing models. Although direct nonlinear unmixing models provide capability to capture nonlinear phenomena, they are difficult to formulate and the results are not always generalizable. …
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Mediterranean forest resilience to drought and climate change
… the differences between the species and the mixing effects further by studying foliar compositions during a dry summer in Spain. There were strong differences between pines and oaks in the stable isotope ratios of carbon, probably driven by underlying differences in water-use efficiency, and …
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Antisolvent crystallisation in oscillatory baffled platforms
… (OBCs) are platforms that generate intense mixing by the oscillatory motion of fluid through periodic constrictions, referred to as baffles. The oscillatory motion generates eddy currents through these baffles and induce highly turbulent and efficient mixing. By the superimposition of a net …
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Temporal evolution of tritium-³He age in the North Atlantic : implications for thermocline ventilation
… that the changing tracer age is a consequence of mixing effects in the ventilation of 3He and tritium. Numerical simulations of the thermocline ventilation of 3H and 3He are performed to examine the steadiness of the tracer age field under different advective-diffusive regimes. A one-dimensional …
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Single and multiphase mixing in partially filled stirred vessels
In many industrial applications, mixing vessels have a liquid height-to-tank diameter ratio, H/T, equal to, or larger than 1. However, there are many instances where this ratio is lower than 1, as in all those cases in which the vessel is either emptied or filled. Even when H/T<1, sufficient …