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 50 for “"non-invasive measurement"”.
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Non-invasive measurement of trigeminal nerve somatosensory evoked potentials
… male and 19 female) were utilized to develop a non-invasive recording capability for TSEPs. Stimulus intensity and artifact, cortical recording sites, stimulation electrode design and placement were explored. Statistically significant differences in amplitude of TSEP waveform components at 13, …
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A laser based, non-invasive measurement of blood perfusion
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Non-invasive measurement of load capacity of trabecular bones with defects
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Non-invasive measurement of physiology using dynamic susceptibility contrast NMR imaging
Thesis (Ph. D.)--Massachusetts Institute of Technology, Whitaker College of Health Sciences and Technology, 1995.
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Evaluation of bone by non-invasive measurement of the velocity of ultrasound
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1983.
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Photoplethysmography for non-invasive measurement of bone hemodynamic responses to changes in external pressure
… (PPG) hardware have made it a promising tool for non-invasive bone hemodynamic measurements. The aims of this thesis are to: 1) validate the use of PPG as a tool for non-invasive bone hemodynamic measurements, 2) characterize bone hemodynamic responses to changes in external pressure, and 3) …
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Scale-up investigation and hydrodynamics study of gas-solid fluidized bed reactor using advanced non-invasive measurement techniques
… bed reactors (FBRs) by implementing our advanced non-invasive measurement techniques which are gamma ray computed tomography (CT) and radioactive particle tracking (RPT) that measure local hydrodynamic parameters. Experiments were carried out in two fluidized beds of 14 cm and 44 cm in diameter …
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Non-invasive Measurement of Cholesterol in Human Blood by Impedance Technique: an Investigation by Finite Element Field Modelling
… determining cholesterol levels in human blood non-invasively by electrical impedance technique. The main part of this research is focused on the development of methodologies for numerical finite element (FE) modelling of simplified blood-cholesterol system, representing a real measurement …
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Towards a non-invasive measurement of human motion, force, and impedance during a complex physical-interaction task : wire-harnessing
… especially physical interaction with non-rigid objects. This performance gap is ever-present in the manufacturing process known as wire-harnessing. Generally, on an assembly line, robots can be used to quickly and accurately assemble a system. However, due to the non-rigid nature of a …
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A validation and feasibility study of the non-invasive measurement of oxygen delivery and consumption after elective major abdominal surgery.
… employed in these historical studies were invasive and inconsistent with contemporary practice. V̇O2 can be measured non-invasively with indirect calorimetery, and DO2 calculated from non-invasive cardiac output monitors, and haemoglobin and oxygen saturation measurement devices. This …
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Interferometric, acousto-optic modulated diffuse correlation spectroscopy @ 1064 nm (AOM-iDCS) toward higher sensitivity, non-invasive measurement of cerebral blood flow
… optical technique that enables continuous, non-invasive, and direct measurements of CBF. The effectiveness of DCS in measuring CBF is hampered in adults by extracerebral contamination and limited depth sensitivity. The goal of this dissertation is to extend the usefulness of DCS in the adult …
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A system for impedance characterization of coronary stents
… of the stent-tissue interface using invasive methods, but such methods are commonly only suitable for in vitro studies (Prasad et al, 2005), meaning they cannot be practically used clinically and can only provide information at a limited number of time points. The technique of …
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Assessment of force coordination and neuromuscular quickness in healthy adults
… outcomes. Overall, this study created a simple, non-invasive measurement technique that quantifies force coordination and neuromuscular quickness in healthy, young adults.</p>
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Wave propagation in flexible tubes
… not make any assumptions about the tube's wall non-linearity and the analysis takes into account the effects of the vessel's wall viscoelastic properties, convective, frictional effects and fluid viscosity; 3) WIA offers a technique (separation) to study wave dissipation in one direction whilst …
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Evaluating of scale-up methodologies of gas-solid spouted beds for coating triso nuclear fuel particles using advanced measurement techniques
… on implementing for the first time advanced non-invasive measurement techniques to evaluate the scale-up methodology of gas-solid spouted beds for hydrodynamics similarity that has been reported in the literature based on matching dimensionless groups and the new mechanistic scale up …
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Prediction of the Outcome in Cardiac Arrest Patients Undergoing Hypothermia Using EEG Wavelet Entropy
… among two groups of patients: survived vs. non-survived. Our results revealed that the brain high frequency oscillations (between 64-100 Hz) captured from the inferior frontal lobes are significantly more complex in the CA patients who survived (pvalue ≤ 0.02). Given that the non-invasive …
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Partial discharge measurements in high voltage motors.
… diagnostic techniques and partial discharge measurement systems are reviewed. The requirement for an on-line partial discharge location technique is discussed. An experimental investigation was carried out into the propagation characteristics of partial discharge pulses within a model stator …
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A review of optical diagnostic techniques used to identify uranium spectral signatures
… and countering nuclear proliferation. Through non-invasive measurement techniques it is possible to remotely monitor an area and confirm or deny the use of nuclear materials in explosives. Given that all elements have a unique atomic and molecular emission signature, explosive compositions can …
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