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 10 of 10 for “"Four-electrode"”.
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The validity of percent body fat estimates by Jackson & Pollock skinfold equation, near infrared, bioelectrical impedance and body mass index
… fat estimates by the Jackson & Pollock sum of four skinfold equation (JPSF), bioeletrical impedance (BIA), near infrared (NIR) and body mass index (BMI) when compared to the criterion method of underwater weighing (UWW). Skinfolds were measured at four sites, the triceps, ilium, abdomen and …
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Detection of Antibody-Antigen Reactions using Surface Acoustic Wave and Electrochemical Immunosensors
… sensors. Capacitively coupled two- and four-electrode sensors were developed to measure the impedance change at the sensor surface. Effects of the interaction between electric fields and the electrical double layer near the liquid-solid interface will also be discussed. Finally, the …
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Detection of dementia (Alzheimer’s disease) marker tau using a four gold microband electrode impedance sensor
… This study presents for the first time a four-electrode impedimetric biosensor system for the detection of tau protein, which is one of the most sensitive markers for the prediction of Alzheimer’s and the level of this marker in the plasma has been found to correlate with cerebro-spinal …
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Single-Walled Carbon Nanotube Arrays for High Frequency Applications
… elements appear when forming the device electrodes degrade the overall performance.</p> <p>The continuum model of an individual nanotube is developed. A unique potential function is presented to effectively describe the electron distribution in the carbon nanotube subsequently …
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Development of an electrical impedance tomograph for complex impedance imaging
… effective capacitance between the measurement electrode pairs in four-electrode systems reduces the measurability of changes in phase. A number of benchmarking indices were developed and implemented, both for system characterisation and for practical/theoretical design comparisons.<br/>
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The effect of premenstrual edema on percent body fat measurements utilizing bioelectrical impedance
… yr using an electrical impedance analyzer with a four-electrode arrangement that induces a painless signal ( 800 !microamps at 50 kHz) into the body. Internal consistency reliability estimates made approximately 5 min apart during each test day ranged from R = .96-.99 for the impedance …
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Electrolytic conductances and related properties of solutions of some acids and salts in acetone
… measurements made using two platinised electrodes are, in some degree, liable to errors due to polarization, end effects and the state of the electrode surfaces. Several workers have also found errors due to the presence of finely divided platinum, such as adsorption of electrolyte on …
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Advancing three-dimensional electrophysiology: Development and evaluation of versatile platform for tailored 3D microelectrode array fabrication
Microelectrode arrays (MEAs) are widely used tools to investigate in vitro neuronal networks and acute brain slices. Planar or 2D MEAs have been the conventional standard for decades, enabling the extracellular recording and stimulation of cultured neuronal cells and tissue slices. However, the …
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The effect of functional electrical stimulation of the abdominal muscles on motor performance and activity of the trunk in patients with stroke: A pilot study
… placement (bilateral vs unilateral) of FES electrodes to activate external obliques (EO) for use in combination with abdominal exercises. Ethical approval and permission for the study was obtained from the Human Research Ethics Committee at the University of Cape Town and the Western Cape …