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 134 for “"diagnostic techniques"”.
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Diagnostic techniques for EHD and MHD interaction
… a series of experiments and a wide number of diagnostic techniques have been utilized. The EHD interaction, realized by means of a Dielectric Barrier Discharge (DBD) actuator, and its impact on the boundary layer have been evaluated by means of two different experiments. In the first one a …
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Electro-Optic Diagnostic Techniques For The CLIC Linear Collider
… of femtosecond level is based on electro-optic techniques. In this thesis, a bunch profile monitor, based on electro-optic spectral decoding (EOSD), is currently developed for the CLIC Test Facility 3 at CERN. The monitor is optimised for bunch lengths over 3.5 ps with effective window of 16 ps, …
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Fuel Droplet Optical Diagnostic Techniques for Lean Premixed Prevaporized Aeroengine Combustors
… This work employs a combination of optical diagnostics to enhance the understanding of fuel spray dynamics. Here, Mie scattering is utilized to visualize and measure the penetration depth of fuel sprays inside the combustor at reacting conditions. Both Jet-A and synthetic aviation fuel …
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Quantitative and Qualitative Evaluation of Dental Structures using Multispectral Photothermal Diagnostic Techniques
Enhanced Truncated-Correlation Photothermal Coherence Tomography (eTC-PCT) is a dynamic frequency-domain imaging modality for non-invasive imaging of samples. The original embodiment of eTC-PCT uses an 808-nm diode laser to generate 3D photothermal images of samples. In order to obtain molecular …
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Contributions to the Understanding of Ship Airwakes Using Advanced Flow Diagnostic Techniques
<p>The objective of this research was to better characterize the complex, three dimensional, unsteady aerodynamic flows produced by the superstructure of a ship, which is referred to as an airwake. This problem is relevant and important because the turbulent airwake significantly and adversely …
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A review of optical diagnostic techniques used to identify uranium spectral signatures
… 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 be determined by making …
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Laser Diagnostic Techniques with Ultra-High Repetition Rate for Studies in Combustion Environments
When conducting laser based diagnostics in combustion environments it is often desirable to obtain temporally resolved information. This can be due to several factors such as combustion taking place in a turbulent flow field, flame propagation from a spark plug in an initially quiescent combustible …
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Novel diagnostic techniques for investigations into energy and matter transport in dynamic systems
… in their attempted use. In this work a novel diagnostics platform is theorised for the study of light-matter interactions by assessing energy transfer within a process relative to certain performance attributes e.g. ablation efficiency (kg/W), coupling momentum efficiency (N.s/W) and kinetic …
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Development of novel laser diagnostic techniques for the quantitative study of premixed flames
… the development and application of laser diagnostic techniques for accurate temperature measurements and for the determination of flamefront properties in premixed flames that can serve as input data for computational fluid dynamical (CFD) models in technical combustion. The work comprises …
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Diagnostic techniques for detecting exposure and anemia in birds exposed to crude oil
Oil spills have long been recognized as a significant threat to wildlife. Historically, mortality estimates have served as the basis for assessing impact to natural resources. However, these mortality estimates alone neglect the more wide-spread impact of oil spills on wildlife including birds, …
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Determining low levels of Africanization in unmanaged honey bee colonies using three diagnostic techniques
"Killer bees" arrived in the United States in the year 1990. Questions have arisen regarding low levels of Africanization in regions bordering the locations with established, Africanized bees. Honey bees were collected and examined using three methods of testing to determine levels of …
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Developing tissue engineered models of oral mucosa and oral cancer to study novel therapeutic and diagnostic techniques.
… were next utilised to test four non-invasive diagnostic technologies. These included a cell metabolism marker, impedance spectroscopy, Fourier transform infra-red and optical coherence tomography. The results obtained from these different techniques showed varying degrees of promise with the …
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Avaliação da etiologia das infecções enteroparasitárias em diferentes grupos pediátricos e genotipagem de isolados de Giardia duodenalis
… of the parasite. However, the more sensitive diagnostic techniques are also the most expensive, requiring a detailed analysis of the cost-benefit of their use in clinical routine. In addition to the routine diagnosis, the molecular characterization of Giardia contributes to a better …
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Spin dependent reactions in an electronically excited helium discharge
… investigated using optical pumping and microwave diagnostic techniques. Wigner (1927) proposed that electron spin angular momentum is conserved in atomic collisions. This rule of elec-tron spin conservation is tested in the collision of two helium triplet metastable atoms in the afterglow of a …
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Investigating the role of growth hormone receptor in oesophageal squamous-cell carcinoma.
… may provide a platform to develop improved diagnostic techniques and therapies. The growth hormone (GH) signalling axis is important for proper cellular and organ system function. The axis has been shown to play a role in a number of cancers.
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Gamma ray production cross sections of proton bombardment of fluorine for light element analysis and depth profiling
… of the plasma facing components (PFC), diagnostic techniques that monitor the conditions of PFCs are useful. One ion beam analysis (IBA) diagnostic technique utilizes particle induced gamma emission (PIGE) analysis to diagnose the conditions of PFCs. Gamma production differential cross …
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Measurement of the Electron Density and the Attachment Rate Coefficient in Silane/helium Discharges
… in a hollow cathode discharge using microwave diagnostic techniques. When silane is added to the discharge gas, the electron density is drastically reduced, which is attributed to dissociative attachment to a product of the dissociation of the parent silane molecules, either SiH(,2) or SiH(,3). …
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A framework for non-intrusive load monitoring and diagnostics
… places increasing demands on monitoring and diagnostic techniques. The non-intrusive load monitor (NILM) provides a low-cost, low-maintenance way to perform this monitoring and diagnostics from a centralized location. This work critically evaluates the current state of the NILM hardware and …
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An experimental investigation of organized structure and mixing in compressible turbulent free shear layers
… nature of the mixing layer. Nonintrusive optical diagnostic techniques were employed to image the large structures. Both Mie scattering from condensed ethanol droplets and laser-induced fluorescence from seeded nitric oxide were used. The LIF experiments were utilized to avoid potential particle …
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