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.
Results
Showing 1 to 20 of 70 for “"entrain"”.
-
An Investigation of Methods to Homogeneously Entrain and Suspend Abrasive Particles in a Low Pressure Dental Water Jet
… Many different methods have been proposed to entrain and suspend particles in a high pressure water jet system. The abrasive particles can be entrained before the water is pressurized, while the water is being pressurized, or after the water jets stream exits the pressurized system. Each …
-
Sedimentologic and Stratigraphic Significance of Boulder Layers in the Outer Coastal Plain of Southeastern Virginia
… lower than today probably had the capacity to entrain 70-80 percent of the clasts in the boulder layers, but probably not the capacity to entrain the larger cobbles and boulders in the boulder layers. Winter river-ice rafting might provide a possible means of transporting the larger and angular …
-
The Giesel ejector: a practical appraisal of its ability to improve the performance of a steam locomotive
… energy in a high velocity fluid stream, to entrain end extract a second fluid from a given location.
-
Rhythmic cueing effects on gait parameters of children with spastic diplegic cerebral palsy: an immediate entrainment study
… spastic diplegic cerebral palsy can synchronize (entrain) their gait patterns with an external auditory rhythmic stimulus, and whether this rhythmic stimulus would encourage improvement in stride symmetry and knee extension at foot contact during the gait cycle. Five participants completed an …
-
Sensing Rhythm: Synchronizing Auditory Feedback and Movement
… designed around the ability of people to entrain their movements with a rhythm. Phase denotes the progression through a movement and thus tracking phase tracks progression through a movement. We show how to track phase using sensors and develop a novel visual synchronization system that …
-
Investigation of Clean Diesel Combustion With Oxygenated Fuels in a Constant -Volume Combustion Chamber Using Forward Illumination Light Extinction Technique
… has less soot formation due to its capability to entrain more ambient air. The influences of both fuel physical and chemical properties on soot formation were further demonstrated with the study of tetradecane and two commercial diesel fuels.
-
Intradermal needle-free powdered drug injection
… uses a jet of gas undergoing choked flow to entrain powder and subsequently penetrates through the skin for delivery of the powder. Different nozzle designs and orifice geometries are also explored. In vitro injection of polymer beads (1-5 [mu]im in diameter) into porcine tissue demonstrate …
-
Measurement of flow in a microfluidic channel in response to application of voltage
… force equally opposes the dipole force and can entrain fluid and force it to move along the length of a channel. The dipole force was estimated using a MATLAB simulation, and the drag force was calculated via experiments which used Electrorheological fluid in a channel lined with electrodes. …
-
Causal role of different frequencies of brain rhythms for the processing of conscious and unconscious perceptual contents
… transcranial alternating current stimulations to entrain the bilateral occipital regions of the brain with alpha, beta, or theta rhythms while participants performed a delayed target-probe discrimination task. Through neuromodulation, we showed that entrainment of beta rhythms improved the …
-
Numerical simulations of elliptical jets: a study of jet entrainment
… This induction of fluid is defined as entrainment and depends greatly upon the jet geometry. In particular, an elliptical jet has been found to entrain at a higher rate than its circular counterpart. Numerical simulations of elliptical jets have been conducted on NRL’s parallel CM-5 and …
-
The Role of Geomorphic Features and Hydrologic Processes on Sediment Clusters in Gravel-Bed Rivers, Washington: A Field-Based Approach
… velocity and critical shear stress required to entrain particles were calculated to determine the possible effects of clusters on the entrainment of sediment. An improved understanding of how clusters develop, evolve and affect the entrainment of sediment under various hydrologic processes will …
-
Dynamics, interactions and ecosystem implications of mesoscale eddies formed in the southern region of Madagascar
… that eddies spawned off southern Madagascar entrain chlorophyll-a rich coastal waters into their periphery. This is indicative of the mechanism whereby organisms could become entrained in eddies. Approximately one eddy per year, usually cyclonic, interacts with the southern Madagascan coast, …
-
The Role of Instantaneous Forces in Particle Movement
… in velocity seem to have an effect of particle entrainment. The fluctuations in velocity can be several times greater than their time averaged counterparts. These short durations of high velocity often result in particle movement even though the mean flow may be less than or very near critical …
-
The role of the intergeniculate leaflet in the circadian response to light
… to the SCN, a role for the IGL in photic entrainment has not been established. IGL-lesioned hamsters have been shown to entrain normally to light-dark cycles; effects of the lesion have been manifested in slower rates of re-entrainment to shifts in the light-dark cycle and small changes in …
-
Arabian Sea mixed layer deepening during the monsoon : observations and dynamics
… heat losses at the sea surface. Convective entrainment is the primary local mechanism driving the observed mixed layer cooling and deepening, although horizontal advection of thermocline depth variations affect the depth which the mixed layer attains. Modifications of a one-dimensional mixed …
-
Laboratory Development of a Self-Powered Fontan for Treatment of Congenital Heart Disease
… graft, or Injection Jet Shunt (IJS), used to “entrain” the pulmonary flow and thus provide assistance while reducing the caval pressure. A benchtop Mock Flow Loop (MFL) is configured to validate this hypothesis. The MFL is based on a Lumped-Parameter Model (LPM) of the Fontan circulation and is …
-
Do somatosensory oscillations relate to tactile attention? Extracting the phase of transcranial Alternating Current Stimulation (tACS) during stimulus presentation.
… to the scalp. tACS provides the ability to entrain intrinsic oscillations to specific frequencies. Through the employment of new hardware, the timings of stimuli presentation and the phase of tACS signals were accurately recorded so that their timings could be compared. This setup was …
-
Nuclear Transformation of Chlamydomonas Reinhardtii to Allow for Studies on Circadian Expression of the β-Tubulin Gene
… on their periods, and that have the ability to entrain to daily light-dark and/or temperature cycle. In order to explore the circadian output pathway that regulates β-tubulin gene expression in Chlamydomonas reinhardtii, a nuclear transformation of the organism was performed with a β-tubulin …
-
Modification of Fermentation by Exogenous Energy Input
… yeast metabolism along with the ability to entrain circadian rhythms, although no known genetic mechanism accounts for this. High intensity narrow wavelength light-emitting diodes were employed to illuminate synthetic cultures under fermentation. Multiple colors along the visible spectrum …
-
A numerical modeling investigation of entrainment in cumulus congestus clouds and its effects upon precipitation
… research, the factors controlling how clouds entrain environmental air are still not well understood, a problem contributing to the poor quantitative precipitation forecast skill of numerical weather prediction models and the highly sensitive precipitation biases in climate models. Inspired by …
Page 1 of 4