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 921 for “"ablation"”.
-
Highly Efficient Thermal Ablation of Silicon and Ablation in Other Materials
… Inherent stochastic variations from thermal ablation along with detrimental heat effects, however, limit the feasibility of achieving high precision. The high number of control parameters that make laser micromachining versatile also hinders optimization due to high exploration time. The …
-
Laser ablation ICP spectrometry.
This thesis reports investigations into laser ablation inductively coupled plasma emission spectrometry for rapid elemental analysis of a diverse range of samples: glasses, aqueous solutions, oils, coated steels and glasses, and biological samples.Bulk analysis of glasses for major, minor and trace …
-
Combustion-ablation time scale phenomenology
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
-
Extreme ultraviolet probing of laser ablation
… ultraviolet (EUV) sources in probing laser ablation and material opacity. The radiation hydrodynamic codes POLLUX and h2d are used to study the Rayleigh-Taylor instability in a regime relevant to inertial fusion energy and, in support of experimental effort, to test the feasibility of …
-
SYNTHESIS OF NANOCOMPOSITES BY LASER ABLATION
… nanoparticles with immunoglobulin E by laser ablation of Au in a liquid solution. The colloidal stability and the size distribution of the resulting bio-nanoconjugates were examined with UV-Visible spectroscopy (UV-Vis), dynamic light scattering (DLS), and transmission electron microscopy …
-
Ablation of Steel by Microsecond Pulse Trains
… imaging technique, is used to monitor the ablation process. The pulse parameter space is explored and the key regimes are determined. Material removal is observed when the pulse delay is on the order of the pulse duration. ICI is also used to directly observe the ablation process. Melt …
-
Laser ablation sample transfer for mass spectrometry
… at 3 μm wavelength was focused onto samples for ablation at atmospheric pressure. The ablated materials were transferred to a solvent or surface. For off-line electrospray ionization (ESI) and matrix-assisted laser desorption/ionization (MALDI) analysis, the ablated material was captured in a …
-
Approximate Thermal Modeling of Radiofrequency Cardiac Ablation
… efficacy and safety of radiofrequency catheter ablation (RFCA) of cardiac tissue. The purpose of RFCA is to carefully heat selected locations in the heart. The resulting thermal injury creates lesions which prevent the generation or propagation of arrhythmias. The ability to predict the …
-
Laser induced plasma ablation of biological tissue
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1985.
-
Segmentation and visualization for cardiac ablation procedures
… planning and outcome evaluation of cardiac ablation procedures. Cardiac ablation is a common medical procedure that consists of burning cardiac tissue causing atrial fibrillation, or irregular contractions of the heart's atria. We first propose a method for the automatic delineation of the …
-
Targeted ablation therapy for treatment of gastrointestinal dysrhythmias
… and safety of using radio-frequency (RF) ablation to modulate slow wave activity, as a potential future therapeutic option. In-vivo experiments were designed and performed in weaner pigs. RF-ablation was performed on the gastric serosa in temperature-control mode, with a non-irrigated …
-
Image-guided robots for dot-matrix tumor ablation
… by a thin electrode. However, the use of thermal ablation as a first line of treatment is limited due to the difficulty in accurately matching a desired treatment and a limited region of active heating around an electrode. The purpose of this research is to identify and quantify the current …
-
Radio frequency ablation lesion determination using impedance modeling
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
-
An autonomous ablation stake for glacier mass balance measurements
Í þessari ritgerð er kynnt þráðlaust ígreypt kerfi sem ætlað er til mælinga á massajafnvægi jökla. Kerfið er í formi stiku sem er sett í borholu á jökulfleti. Tilgangur þess er að mæla breytinguna á yfirborðshæð jökulísins þar sem uppsafnanir eða leysingar eiga sér stað, breytingin er fengin með …
-
Validation Platform for Ultrasound-Based Monitoring of Thermal Ablation
PURPOSE: Thermal ablation therapy is an emerging local cancer treatment to destroy cancer tissue using heat. However variations in blood flow and energy absorption rates make it extremely challenging to monitor thermal changes. Insufficient ablation may lead to recurrence of the cancer while …
-
Controlled ablation of rod photoreceptors in transgenic Xenopus laevis
Retinal degeneration is the progressive loss of neurons lining the posterior surface of the eye. Loss of a certain group of neurons called rod photoreceptors can occur as the result of genetic mutation. In humans, and in mammalian models of retinal degeneration, the death of these cells is …
Page 1 of 47