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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 14 of 14 for “"Conductivity probe"”.
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Uncertainty Quantification and Accuracy Improvement of the Double-Sensor Conductivity Probe for Two-Phase Flow Measurement
The double-sensor conductivity probe is one of the most commonly used techniques for obtaining local time-averaged parameters in two-phase flows. The uncertainty of this measurement technique has not been well understood in the past as it involves many different steps and influential factors in a …
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Development of a Fast X-ray Line Detector System for Two-Phase Flow Measurement
… conventional methods such as the multi-sensor conductivity probe, wire-mesh sensor, impedance void meter, or direct optical imaging. The X-ray densitometry technique is non-intrusive, insensitive to flow regime changes, capable of measuring high temperature or high-pressure flows, and has …
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Sodium Fluoride Hopper Crystals
… area to volume crystals were measured using a conductivity probe. The dissolution rate of these crystals were greater compared to commercial grade sodium fluoride with cubic crystal morphologies.
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Study of the C-curve fluctuation analysis for a CSTR reactor
… (Residence Time Distribution) test. A electrical conductivity probe capable of measuring concentration variations in volume elements of the order of 3.00 x 10⁻⁵ml was used to detect the tracer {sodium chloride) response. Flow rates ranging from 52 (ml/min) to 213 (ml/min) and agitation speeds from …
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The use of turbulent jets to destratify the Charles River Basin
… discharge angles, and nozzle diameters, and a conductivity probe was used to document changes in salinity versus elevation and time. The effectiveness of the turbulent mixing was determined by comparing the change in water column potential energy over time, while efficiency was determined by …
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Indirect conductivity detection in size exclusion chromatography of small molecules
… This research evaluated the indirect conductivity detection method for the size exclusion chromatographic separation of small molecules. Several studies were developed in order to understand the performance of this novel indirect detection mode. The evaluation of the initial …
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Soil suction and swell behavior of chemically treated expansive clays
… the filter paper method and the electrical conductivity probe. Matric suction arises from capillary forces, soil texture, and adsorption forces of clay particles. Osmotic suction results from the balance of salt concentrations in soil water. When soils were reacted with chemical stabilizers, …
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Development of instrumented oedometer incorporated with bender element and electrical conductivity
… bender element transducers and electrical conductivity probe to investigate and correlate the compressibility, shear wave velocity (Vs) and electrical conductivity (EC) characteristics of solidified dredged marine clay and refined kaolin. Ordinary Portland cement was used at 5 %, 10 % and …
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Ionic conductivity and exchange current density of non-aqueous lithium polysulfide electrolyte
… we systematically investigate the ionic conductivity and exchange current density at the electrode surface with lithium polysulfide solutions of varying concentration and in differing solvents which solvent molecules of different sizes. Ionic conductivities are measured using a …
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Carbon-based electric double layer capacitors for water desalination
… The first flow cell utilized a commercial conductivity probe to measure salt concentration after charging the electrodes without flow. We showed that the ion capture on both the carbon cloth and activated carbon electrodes were proportional to the applied voltage, however two orders of …
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Two-Phase Flow Measurement using Fast X-ray Line Detector System
… The data are compared with the double-sensor conductivity probe and gas flowmeter for various flow conditions. The results show reasonable agreements between the x-ray and the other measurement techniques. Finally, various 2-D tomography algorithms are implemented for the non-axisymmetric …
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Turbulent mixing in stratified fluids : layer formation and energetics
… The evolution of density was measured with a conductivity probe. As the instability theory of Phillips (1972) and Posmentier (1977) shows, an initially uniform density profile turns into a series of steps when Rio is larger than a critical value Ric, which forms a stability boundary. For fixed …
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Experimental investigation of mixing time in a stirred, torispherical-bottomed tank equipped with a retreat-blade impeller
… baffled tank (i.e., with four full baffles). A conductivity method using sodium chloride (NaCl) as a tracer was used as one the main method to determine mixing time. Experiments in the unbaffled system were conducted by installing one two probes in the mixing vessel (at the wall and midway …
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Sensor Technologies for Nutritional Management of Ruminants
… aqueous sensing of ruminal CO2, temperature, and conductivity across four diets differing in energy and protein supply. Four ruminally cannulated Holstein cows at maintenance were included in a Latin Square Design. Treatments consisted of a) chopped grass hay (9.07 kg), b) chopped grass hay (9.07 …