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 15 of 15 for “"Non-invasive measurements"”.
-
Estimation of cardiovascular parameters from non-invasive measurements
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2003.
-
Impedance spectroscopy: non-invasive measurements for human tissues characterization
L'abstract è presente nell'allegato / the abstract is in the attachment
-
A Groundwork for Perspectival Quantum Mechanics
… To lay this groundwork I focus on encapsulated measurements, which involve an isolated observer and a superobserver (who measures the observer). I first distinguish between invasive and non-invasive measurements. Each leads to a possible inconsistency: In non-invasive measurements, the observer …
-
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 …
-
Using Artificial Life to Design Machine Learning Algorithms for Decoding Gene Expression Patterns from Images
… gene expression such as microarrays however are invasive, require biopsy, and expensive. These factors limit experiments to low rate temporal sampling of gene expression and prevent longitudinal studies within a single subject, reducing their statistical power. Thus methods for non-invasive …
-
Exploring the role of reactive oxygen species (ROS) in marine ecosystem health and function
… sensOr (DISCO), enabling high resolution, non-invasive measurements in real time. We further refine DISCO by making it more compact, user-friendly, adaptable, and robust, enabling measurements of superoxide across a diversity of environments. Using DISCO, I observe species-specific …
-
Wettability assessment using resistivity and NMR measurements
… multi-phase fluid flow and rock physics measurements. This impacts the relative permeability, recovery factor, choice of enhanced oil recovery method, and reservoir characterization. Wettability can be assessed using contact angle measurements and the imbibition-based Amott and USBM …
-
Sensitivity of Diffuse Reflectance Spectroscopy to Dose- and Depth-dependent Changes in Tumor Oxygenation after Radiation Therapy
… reflectance spectroscopy (DRS) enabling repeated non-invasive measurements of tumor vascular oxygen saturation can provide surrogate measures of tumor oxygenation to predict tumor response to therapy. The goal of this study is to determine the sensitivity of diffuse reflectance spectroscopy to …
-
Transition between Flow Regimes in Porous Media Using Magnetic Resonance Velocimetry: From Laminar to Turbulent
… is used, which is particularly advantageous for non-invasive measurements in opaque systems. This thesis provides the experimental and analysis toolkits for such studies and has demonstrated the contribution to characterising and understanding different flow regimes in porous media.
-
Non-invasive optical monitoring of free and bound oxygen in humans
… perfusion and oxygenation in these organs. Non-invasive measurements of changes in tissue perfusion and oxygenation, in e.g., the forearm, might give an early indication of clinical deterioration. Preterm infants are very vulnerable patients. Their organs, in particular the lungs, are not …
-
Computational modeling of the tissue mechanics in rheumatic heart disease patients
Non-invasive measurements play a crucial role in advancing heart failure treatments, a leading global cause of mortality. Understanding the biomechanical characteristics of myocardial material behavior in both healthy and diseased hearts through finite element analysis offers valuable insights into …
-
Methods for Parameter Estimation with Devices in Microgrids
… infer such parameters, or safety concerns. Using non-invasive measurements, this work seeks to estimate these parameter values in devices which may exist within a low voltage microgrid. Constant power loads, diesel gensets, and solar inverters can all be found in low voltage microgrids. This …
-
The quantification of pregnancy-induced bone mineral mobilisation in the maternal appendicular skeleton with novel peripheral quantitative computed tomography (pQCT) techniques.
… mid- to late-pregnancy. These techniques provide non-invasive measurements of bone density, mass, geometry, distribution and strength at the radius and tibia. This thesis aims to determine: whether pregnancy-induced changes occur in a) the trabecular compartment, b) the cortical compartment, c) …
-
The NEST study: NICOM vs ECHO in the screening of transient hypertrophic obstructive cardiomyopathy (HOCUM)
… There has been a rising interest in NICOM (Non-invasive Cardiac Output Monitoring), a range of novel non-invasive measurements of cardiac output and left ventricular outflow using an array of techniques from electrical bioimpedance to transthoracic bioreactance. The appeal is that these …
-
Epidemiology of diabetes and related mortality: early screening, socioecological determinants, and the value of prevention
… titled “Diabetes Risk Prediction: Multivariate Nonlinear Interaction Approach,” I argue that the success in preventing or delaying the incidence of type 2 diabetes and subsequent complications depend on the early detection of undiagnosed cases and identifying people at high-risk. However, early …