subject:(X Ray CT)

University of New South Wales

1. Zhang, Yulai. Multi-scale characterisation of diffusion in shale.

Degree: Petroleum Engineering, 2019, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/63013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:59631/SOURCE02?view=true

► Shale gas has become the most important natural gas resource in the U.S. and is booming in many other countries. Due to the nano-pores of… (more)

▼ Shale gas has become the most important natural gas resource in the U.S. and is booming in many other countries. Due to the nano-pores of shale, diffusion phenomenon is an important mass transport mechanism in shale and therefore needs to be better understood for extracting the gas more effectively. Since shale pore structure is comprised of pores with sizes ranging over several orders of magnitude, comprehensive studies on shale diffusion property require characterization of diffusion at multiple length scales. In this thesis, we develop a workflow that investigates the process of liquid/liquid diffusion through shale rock. We combine scanning electron microscopy (SEM), focused ion beam-scanning electron microscopy (FIB-SEM), pore-scale simulations and high-resolution 4D X-ray microcomputed tomography (μ-CT) to investigate shale structure and diffusion properties at various length scales. Firstly, a new mathematical framework is developed, which is able to measure local effective diffusivity from μ-CT images. This framework enables micrometer scale investigation of diffusion for millimeter samples. For achieving better measurement, the errors/uncertainties that are associated with grayscale-based quantifications are investigated and practical suggestions to alleviate those issues are provided. Secondly, 4D visualization of diffusion phenomenon in shale is realized by dynamic μ-CT imaging. Fast diffusion caused by fractures is observed. Local effective diffusivity measurement shows substantial heterogeneity within the sample. Micrometer scale compositional changes in shale matrix are found to be responsible for the heterogeneity of diffusivity. Lastly, the multi-scale pore structure of shale is investigated and a conceptual pore structure model is built based on observations. Pore-level numerical simulations on segmented FIB-SEM images are upscaled to determine effective diffusivity. The porosity-diffusivity relationship provides a way for predicting diffusivity from porosity. We conclude that three factors control the diffusion process in shale, which include fractures, matrix heterogeneity and organic matter pore structure. Fractures influence the diffusion process at the core scale (millimeter) resulting in a bulk diffusivity greater than the matrix diffusivity. Matrix heterogeneity controls diffusion at the sub-core scale (micrometer) and causes diffusivity differences by more than one order of magnitude. Pore-scale structure (nanometer) within the organic matter results in diffusivity differences mostly within one order of magnitude. Advisors/Committee Members: Armstrong, Ryan, Petroleum Engineering, Faculty of Engineering, UNSW, Mostaghimi, Peyman, Petroleum Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: X-ray CT; Shale; Diffusion

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APA (6^th Edition):

Zhang, Y. (2019). Multi-scale characterisation of diffusion in shale. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/63013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:59631/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Zhang, Yulai. “Multi-scale characterisation of diffusion in shale.” 2019. Doctoral Dissertation, University of New South Wales. Accessed January 20, 2021. http://handle.unsw.edu.au/1959.4/63013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:59631/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Zhang, Yulai. “Multi-scale characterisation of diffusion in shale.” 2019. Web. 20 Jan 2021.

Vancouver:

Zhang Y. Multi-scale characterisation of diffusion in shale. [Internet] [Doctoral dissertation]. University of New South Wales; 2019. [cited 2021 Jan 20]. Available from: http://handle.unsw.edu.au/1959.4/63013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:59631/SOURCE02?view=true.

Council of Science Editors:

Zhang Y. Multi-scale characterisation of diffusion in shale. [Doctoral Dissertation]. University of New South Wales; 2019. Available from: http://handle.unsw.edu.au/1959.4/63013 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:59631/SOURCE02?view=true

University of Texas – Austin

2. Eckley, Scott Allan. 3D textural and geochemical analyses on carbonado diamond : insights from pores and the minerals within them.

Degree: MSin Geological Sciences, Geological Sciences, 2018, University of Texas – Austin

URL: http://hdl.handle.net/2152/65474

► Carbonado is an enigmatic variety of polycrystalline diamond found only in placer deposits in Brazil and the Central African Republic, with unknown primary origin. These… (more)

▼ Carbonado is an enigmatic variety of polycrystalline diamond found only in placer deposits in Brazil and the Central African Republic, with unknown primary origin. These highly porous dark nodules possess a narrow range of isotopically light carbon (δ13C -31 to -24 ‰), a primarily crustal inclusion suite unusually enriched in REEs and actinides filling the pore spaces, a loosely constrained crystallization age between 2.6 and 3.8 Ga, and other atypical features which have led to a variety of formation theories, from extra-solar to deep mantle. Unravelling the circumstances responsible for the diamond material and inclusion suite may provide evidence of not-yet-understood mantle processes and/or geochemical reservoirs. This study represents the first multi-sample 3D textural analysis of carbonado diamond using high resolution X-ray computed tomography. We document a variety of textures in both pore structure and mineralogy within pores. All samples feature a foliation with a mild preferred orientation. We observe the same fabric in a framesite diamond, a less porous polycrystalline diamond found in kimberlites and thought to crystallize shortly before eruption. The similarity in fabrics suggests a similar process could have formed both. Additionally, spatially coherent 3-D volumes of pores with similarly attenuating filling material juxtaposed against volumes with differently attenuating material suggests that secondary minerals formed from the spatially-limited in-situ breakdown of primary inclusion phases. These observations, combined with the presence of euhedral cavities and pseudomorphs, supports the hypothesis that the material comprising the secondary minerals within carbonado is largely primary. Step-leaching and ICP analysis of three African and two Brazilian samples reveals that the modern-day inclusion suite is highly enriched in REE (average ΣREE = 2.3 wt. %), with REE and trace element patterns that match those of melts derived from low degree (< 1 %) partial melting of primitive mantle (i.e. kimberlite and carbonatite), suggesting a link between carbonado and primitive melts. These textural and chemical findings support the origin of both carbonado and its pore-filling material in a mantle environment. The origin of light carbon in the mantle before 2.6 Ga remains unknown, but subduction of organic material is a possible mechanism. Advisors/Committee Members: Ketcham, Richard Alan, 1965- (advisor), Lassiter, John C (committee member), Miller, Nathaniel R. (committee member).

Subjects/Keywords: Carboando; Diamond; X-Ray CT

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APA (6^th Edition):

Eckley, S. A. (2018). 3D textural and geochemical analyses on carbonado diamond : insights from pores and the minerals within them. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/65474

Chicago Manual of Style (16^th Edition):

Eckley, Scott Allan. “3D textural and geochemical analyses on carbonado diamond : insights from pores and the minerals within them.” 2018. Masters Thesis, University of Texas – Austin. Accessed January 20, 2021. http://hdl.handle.net/2152/65474.

MLA Handbook (7^th Edition):

Eckley, Scott Allan. “3D textural and geochemical analyses on carbonado diamond : insights from pores and the minerals within them.” 2018. Web. 20 Jan 2021.

Vancouver:

Eckley SA. 3D textural and geochemical analyses on carbonado diamond : insights from pores and the minerals within them. [Internet] [Masters thesis]. University of Texas – Austin; 2018. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2152/65474.

Council of Science Editors:

Eckley SA. 3D textural and geochemical analyses on carbonado diamond : insights from pores and the minerals within them. [Masters Thesis]. University of Texas – Austin; 2018. Available from: http://hdl.handle.net/2152/65474

University of Canterbury

3. Kim, Daniel. Small animal irradiation using the MARS Spectral CT.

Degree: MS, Physics, 2013, University of Canterbury

URL: http://dx.doi.org/10.26021/6148

► This thesis reports on a novel use of the Medipix All Resolution System (MARS) Spectral CT scanner as a platform of small animal irradiation. Irradiation… (more)

▼ This thesis reports on a novel use of the Medipix All Resolution System (MARS) Spectral CT scanner as a platform of small animal irradiation. Irradiation from the x-ray source in the scanner was used to inhibit the growth and recovery of neurons in rats. The goal is to extrapolate the relationship between stem cells and memory and functional behaviours. Specific developments were carried out prior to the irradiation of live rats. A live rat holder was designed and built to provide a setup stable enough for fixing the position of the rats head. This was achieved by integrating a three piece bar system into the holder to hold the head from both ears and nose. To quantify the absorbed dose, x-ray exposures were measured using a calibrated ion chamber and were used to generate a depth dose curve with sheets of Perspex layers and radiochromic films. This curve is presumed to simulate the dose inside the rat‘s head. To target a sub region of interest within the rat‘s brain, specific anatomical landmarks were investigated for the design of the lead collimators. The position of the sub volume, the hippocampus, was located through a combination of anatomical landmarks and x-ray transmission images of the rat‘s head. Bregma and the interaural line were used to numerically plot out the co-ordinates of the dorsal and ventral hippocampus which was then translated onto the lead collimators. The x-ray transmission images of euthanized rats were used as a guide to locate the dorsal and ventral hippocampuses. Bregma and the interaural line were the main anatomical landmarks which were used for the design of the lead collimators to be placed around the head. Three pilot rats were irradiated with the designed holder and collimators. The point dose to the hippocampus was calculated using the simulated depth dose curve. Post irradiation status of the neurogenesis was assessed three weeks after the treatment. However only one of the three rats showed a significant reduction in the number of neurons in the hippocampus emphasizing the room for more improvement in the physical setup of the irradiation.

Subjects/Keywords: small animal; neurogenesis; CT; x-ray

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APA (6^th Edition):

Kim, D. (2013). Small animal irradiation using the MARS Spectral CT. (Masters Thesis). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/6148

Chicago Manual of Style (16^th Edition):

Kim, Daniel. “Small animal irradiation using the MARS Spectral CT.” 2013. Masters Thesis, University of Canterbury. Accessed January 20, 2021. http://dx.doi.org/10.26021/6148.

MLA Handbook (7^th Edition):

Kim, Daniel. “Small animal irradiation using the MARS Spectral CT.” 2013. Web. 20 Jan 2021.

Vancouver:

Kim D. Small animal irradiation using the MARS Spectral CT. [Internet] [Masters thesis]. University of Canterbury; 2013. [cited 2021 Jan 20]. Available from: http://dx.doi.org/10.26021/6148.

Council of Science Editors:

Kim D. Small animal irradiation using the MARS Spectral CT. [Masters Thesis]. University of Canterbury; 2013. Available from: http://dx.doi.org/10.26021/6148

University of Canterbury

4. Nik, Syen Jien. Optimising the benefits of spectral x-ray imaging in material decomposition.

Degree: PhD, Medical Physics, 2013, University of Canterbury

URL: http://dx.doi.org/10.26021/6170

► The extra energy information provided by spectral x-ray imaging using novel photon counting x-ray detectors may allow for improved decomposition of materials compared to conventional… (more)

▼ The extra energy information provided by spectral x-ray imaging using novel photon counting x-ray detectors may allow for improved decomposition of materials compared to conventional and dual-energy imaging. The information content of spectral x-ray images, however, depends on how the photons are grouped together. This thesis deals with the theoretical aspect of optimising material discrimination in spectral x-ray imaging. A novel theoretical model was developed to map the confidence region of material thicknesses to determine the uncertainties in thickness quantification. Given the thickness uncertainties, photon counts per pixel can be optimised for material quantification in the most dose efficient manner. Minimisation of the uncertainties enables the optimisation of energy bins for material discrimination. Using Monte Carlo simulations based on the BEAMnrc package, material decomposition of up to 3 materials was performed on projection images, which led to the validation of the theoretical model. With the inclusion of scattered radiation, the theoretical optima of bin border energies were accurate to within 2 keV. For the simulated photon counts, excellent agreement was achieved between the theoretical and the BEAMnrc models regarding the signal-to-noise ratio in a decomposed image, particularly for the decomposition of two materials. Finally, this thesis examined the implementation of the Medipix detector. The equalisation of pixel sensitivity variations and the processing of photon counting projection images were studied. Measurements using the Medipix detector demonstrated promising results in the charge summing and the spectroscopic modes of acquisition, even though the spectroscopic performance of the detector was relatively limited due to electronic issues known to degrade the equalisation process. To conclude, the theoretical model is sufficient in providing guidelines for scanning parameters in spectral x-ray imaging and may be applied on spectral projection measurements using e.g. the redesigned MedipixRX detector with improved spectroscopic performance, when it becomes available.

Subjects/Keywords: x-ray imaging; computed tomography; spectral CT

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nik, S. J. (2013). Optimising the benefits of spectral x-ray imaging in material decomposition. (Doctoral Dissertation). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/6170

Chicago Manual of Style (16^th Edition):

Nik, Syen Jien. “Optimising the benefits of spectral x-ray imaging in material decomposition.” 2013. Doctoral Dissertation, University of Canterbury. Accessed January 20, 2021. http://dx.doi.org/10.26021/6170.

MLA Handbook (7^th Edition):

Nik, Syen Jien. “Optimising the benefits of spectral x-ray imaging in material decomposition.” 2013. Web. 20 Jan 2021.

Vancouver:

Nik SJ. Optimising the benefits of spectral x-ray imaging in material decomposition. [Internet] [Doctoral dissertation]. University of Canterbury; 2013. [cited 2021 Jan 20]. Available from: http://dx.doi.org/10.26021/6170.

Council of Science Editors:

Nik SJ. Optimising the benefits of spectral x-ray imaging in material decomposition. [Doctoral Dissertation]. University of Canterbury; 2013. Available from: http://dx.doi.org/10.26021/6170

University of Manchester

5. Chai, Yuan. Engineering Design and Void Characterisation of Thick Composites.

Degree: 2015, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:268800

► Voids are defects that are difficult to completely eliminate during the manufacturing process of composite materials. With the increase of void content (i.e. porosity), the… (more)

▼ Voids are defects that are difficult to completely eliminate during the manufacturing process of composite materials. With the increase of void content (i.e. porosity), the mechanical properties and service life of the composite materials will be significantly affected. It is thus of vital importance to improve the quality of composite materials and avoid the formation of voids. In this project, military-use Twaron®-epoxy thick composite panels have been manufactured and non-destructive testing (NDT) techniques have been used to assess the voids in the panels. Three modification suggestions to the vacuum assisted resin infusion (VARI) composite fabrication method have been proposed in order to improve the quality ofthe composite panels.X-ray computed tomography (CT) has been employed to assess the voids in composite panels, which enables the void content, the morphology and distribution of the voids to be examined in three dimensional views. The void content is found in a range from 0.39% to 1.75% in different composite panels. In composite panels with different thickness, the results show that the porosity increases with an increasing number of fabric layers. Moreover, the threading density and the linear density of the yarns used to weave the fabrics are shown to affect the impregnation process. The void content in the composite panels consisting of coarse fabrics is less than that in the panel made of fine fabrics. Ultrasonic C-scan is also used in this research to study the void distribution from a qualitative perspective, showing a good agreement with the X-ray CT results.The effect of three modifications to the VARI method has been studied. Firstly, cutting the resin inlet tube under the resin surface can effectively eliminate the air remaining in the tube and reduce the air drawn into the vacuum bagging system, and this will reduce the voidage from 1.62% to 0.91%. Moreover, double meshes have been used as the resin flow media in the infusion process, which can enhance the through-thickness resin flow. Compared with the panel made by the conventional VARI method, the voids are fewer and more localised in the panel made with double meshes. In addition, a second outlet has been used, which can alleviate the non-homogenous expulsion of voids and can avoid air being accumulated and trapped in the fabric. It has been observed that the quality in the central part of the panel has been improved using symmetrical outlets.In this research, the non-destructive characterisation capability of X-ray CT has been confirmed and the voids in the composite materials have been visualised in three dimensions. Based on the investigation into the distribution of voids in the composite panel and the formation mechanisms involved, the idea of modifying manufacturing techniques has been proposed to improve the quality of composite materials. The three-dimensional visualisation of the size, shape and distribution of voids can provide useful information for the modelling and numerical studies of void formation and highlights the effect… Advisors/Committee Members: KENNON, WILLIAM WR, Chen, Xiaogang, Potluri, Prasad.

Subjects/Keywords: Textile Composites; X-ray CT; VARI

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APA (6^th Edition):

Chai, Y. (2015). Engineering Design and Void Characterisation of Thick Composites. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:268800

Chicago Manual of Style (16^th Edition):

Chai, Yuan. “Engineering Design and Void Characterisation of Thick Composites.” 2015. Doctoral Dissertation, University of Manchester. Accessed January 20, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:268800.

MLA Handbook (7^th Edition):

Chai, Yuan. “Engineering Design and Void Characterisation of Thick Composites.” 2015. Web. 20 Jan 2021.

Vancouver:

Chai Y. Engineering Design and Void Characterisation of Thick Composites. [Internet] [Doctoral dissertation]. University of Manchester; 2015. [cited 2021 Jan 20]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:268800.

Council of Science Editors:

Chai Y. Engineering Design and Void Characterisation of Thick Composites. [Doctoral Dissertation]. University of Manchester; 2015. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:268800

Brno University of Technology

6. Rusz, Jakub. Akviziční a detekční geometrie CT RTG procesu zobrazení: Acquisition and Detection Geometry of the CT X-ray Imaging Process.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/40718

► The basic components of acquisition and detection geometry of a 3rd generation single slice CT scanner are described here. Then the high contrast spatial resolution… (more)

Subjects/Keywords: CT; optické ohnisko; detektor RTG; prostorové rozlišení; simulátor CT; geometrie CT; CT; focal point; x-ray detector; spatial resolution; CT simulator; CT geometry

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APA (6^th Edition):

Rusz, J. (2018). Akviziční a detekční geometrie CT RTG procesu zobrazení: Acquisition and Detection Geometry of the CT X-ray Imaging Process. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/40718

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rusz, Jakub. “Akviziční a detekční geometrie CT RTG procesu zobrazení: Acquisition and Detection Geometry of the CT X-ray Imaging Process.” 2018. Thesis, Brno University of Technology. Accessed January 20, 2021. http://hdl.handle.net/11012/40718.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rusz, Jakub. “Akviziční a detekční geometrie CT RTG procesu zobrazení: Acquisition and Detection Geometry of the CT X-ray Imaging Process.” 2018. Web. 20 Jan 2021.

Vancouver:

Rusz J. Akviziční a detekční geometrie CT RTG procesu zobrazení: Acquisition and Detection Geometry of the CT X-ray Imaging Process. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/11012/40718.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rusz J. Akviziční a detekční geometrie CT RTG procesu zobrazení: Acquisition and Detection Geometry of the CT X-ray Imaging Process. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/40718

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universiteit Utrecht

7. Tomaževič, D. 3D/2D Registration of medical images.

Degree: 2008, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/27895

► The topic of this doctoral dissertation is registration of 3D medical images to corresponding projective 2D images, referred to as 3D/2D registration. There are numerous… (more)

Subjects/Keywords: Geneeskunde; image registration; 3D/2D; CT; X-ray

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APA (6^th Edition):

Tomaževič, D. (2008). 3D/2D Registration of medical images. (Doctoral Dissertation). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/27895

Chicago Manual of Style (16^th Edition):

Tomaževič, D. “3D/2D Registration of medical images.” 2008. Doctoral Dissertation, Universiteit Utrecht. Accessed January 20, 2021. http://dspace.library.uu.nl:8080/handle/1874/27895.

MLA Handbook (7^th Edition):

Tomaževič, D. “3D/2D Registration of medical images.” 2008. Web. 20 Jan 2021.

Vancouver:

Tomaževič D. 3D/2D Registration of medical images. [Internet] [Doctoral dissertation]. Universiteit Utrecht; 2008. [cited 2021 Jan 20]. Available from: http://dspace.library.uu.nl:8080/handle/1874/27895.

Council of Science Editors:

Tomaževič D. 3D/2D Registration of medical images. [Doctoral Dissertation]. Universiteit Utrecht; 2008. Available from: http://dspace.library.uu.nl:8080/handle/1874/27895

University of Manchester

8. Johnson, Mark Richard. An Investigation of Immature Rib Fractures Resultant from both CPR and Abusive Scenarios.

Degree: 2014, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:226575

► The presence of rib fractures in deceased infants is generally considered to be highly specific of non-accidental injury, with some pathologists considering them to be… (more)

▼ The presence of rib fractures in deceased infants is generally considered to be highly specific of non-accidental injury, with some pathologists considering them to be evidence of abuse. Although rib fractures may occur during resuscitative efforts in adults, the general consensus is that such injuries are exceptional in infants owing to inherent plasticity within the thoracic region. The recommendation for cardiopulmonary resuscitation (CPR) of infants since the year 2000 has been for the use of the “two-thumb” technique. However, there has been limited biomechanical investigation to what injuries may occur subsequent to this specific form of CPR. The overall aim of this thesis was to determine if two-thumb CPR can cause similar rib injuries to those seen in abusive squeezing cases. In particular, whether or not this CPR technique allows for over excessive levering of the posterior rib over the transverse process of the spine. To this end, physical experimentation simulating both two-thumb CPR and abusive squeezing was performed on an immature swine model of the infant thorax. The results of these tests did not show any significant difference in the force required to compress the thorax by one third its original anterior-posterior diameter in the two scenarios. One third being the recommended depth for CPR compressions. Fractures resultant from the testing were assessed with radiography and computed tomography, techniques commonly used by post-mortem pathologists. The type and nature of the injuries observed were remarkably similar in both scenarios. Rib injuries were primarily seen in the anterior part of the thoracic cage in both CPR and abusive specimens. The specific site of rib fracture was typically close to or within the costochondral joints. There was however an apparent absence of posterior rib fractures in the abusively tested cohort. This is in part due to the slight difference in profile of the neck and head areas within the ribs of the surrogate model. This acts to reduce the mechanical advantage offered by levering over the transverse processes of the spine.This study has shown anterior fractures of the ribs result from two-thumb CPR, challenging the long held belief that CPR cannot produce rib fractures. X-ray CT offered a significant improvement on the ability to detect costochondral junction injuries. This would offer further support to the routine use of X-ray CT in post-mortem examinations of infants where the cause of death is unknown. This has the potential to offer differential interpretation to the cause of rib injuries, especially in cases of sudden unexpected deaths in infancy, where otherwise child abuse may be diagnosed.

Subjects/Keywords: Infant Rib Fractures; Non-accidental injury; Ribs; CPR; X-ray CT

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APA (6^th Edition):

Johnson, M. R. (2014). An Investigation of Immature Rib Fractures Resultant from both CPR and Abusive Scenarios. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:226575

Chicago Manual of Style (16^th Edition):

Johnson, Mark Richard. “An Investigation of Immature Rib Fractures Resultant from both CPR and Abusive Scenarios.” 2014. Doctoral Dissertation, University of Manchester. Accessed January 20, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:226575.

MLA Handbook (7^th Edition):

Johnson, Mark Richard. “An Investigation of Immature Rib Fractures Resultant from both CPR and Abusive Scenarios.” 2014. Web. 20 Jan 2021.

Vancouver:

Johnson MR. An Investigation of Immature Rib Fractures Resultant from both CPR and Abusive Scenarios. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2021 Jan 20]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:226575.

Council of Science Editors:

Johnson MR. An Investigation of Immature Rib Fractures Resultant from both CPR and Abusive Scenarios. [Doctoral Dissertation]. University of Manchester; 2014. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:226575

Texas A&M University

9. Mohammad Khorasani, Sara. Microstructural Characterization of Material Properties and Damage in Asphalt Composites.

Degree: MS, Mechanical Engineering, 2013, Texas A&M University

URL: http://hdl.handle.net/1969.1/149446

► Asphalt composites are used to construct 90% of roads in the United States. These composites consist of asphalt binder, which is a product of the… (more)

▼ Asphalt composites are used to construct 90% of roads in the United States. These composites consist of asphalt binder, which is a product of the refinery process of oil, aggregates, and air voids. Fatigue cracking is one of the most important distresses that causes damage in asphalt pavements. However, there is still a gap in the understanding of the fatigue process of asphalt composites, such as the influence of material properties on this phenomenon and how the material microstructure changes as a result of fatigue damage. This study focuses on the results of two experiments that were performed on asphalt composites to better understand phenomena related to fatigue cracking: nano-mechanical characterization of the properties of the asphalt composite material and X-ray Computed Tomography nondestructive imaging of damage in the microstructure. These experimental measurements were performed on specimens that are first damaged in the Dynamic Mechanical Analyzer (DMA). The DMA is a tool commonly used for the characterization of fatigue cracking. This test method applies cyclic loads on asphalt composites, damaging them, and in the process determines the viscoelastic properties of the composite throughout the test. The nano-mechanical characterization experiment gives valuable results of the elastic modulus and hardness of the aggregate, binder, and the aggregate-binder interface that can be used to characterize different binder and aggregate combinations. The nanoindentation experiment successfully measured interface properties in the mix. The interface has elastic modulus and hardness values greater than the binder but smaller than the aggregate. This demonstrates that an interaction between these two phases creates a dissimilar phase between the two. The second experiment using X-ray CT gives measurements that are indicative of the influences of fatigue damage on micro-level changes in the material microstructure. The results of this experiment revealed important changes regarding the nature of fatigue damage and its relationship to changes in the geometry of air voids and cracks in asphalt composites. The X-ray CT experiment measured size and shape parameters of air voids at 20 microns/pixel resolution at different damage levels. These results illustrated that reduction in bonding strength in the binder is involved in failure in the mix and thus fatigue cracking is not solely responsible for failure. This conclusion is made based on the results not showing a statistically significant change in air void shape and size parameters with increased damage. This is illustrated by viewing changes in the air void structure within the mix, there is no evidence of crack propagation, or drastic changes in the shape, size, or volume of air voids within the mix. Advisors/Committee Members: Masad, Eyad (advisor), Karaman, Ibrahim (advisor), Srinivasa, Arun (committee member).

Subjects/Keywords: Nanoindentation; asphalt composites; X-ray CT; damage characterization

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APA (6^th Edition):

Mohammad Khorasani, S. (2013). Microstructural Characterization of Material Properties and Damage in Asphalt Composites. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/149446

Chicago Manual of Style (16^th Edition):

Mohammad Khorasani, Sara. “Microstructural Characterization of Material Properties and Damage in Asphalt Composites.” 2013. Masters Thesis, Texas A&M University. Accessed January 20, 2021. http://hdl.handle.net/1969.1/149446.

MLA Handbook (7^th Edition):

Mohammad Khorasani, Sara. “Microstructural Characterization of Material Properties and Damage in Asphalt Composites.” 2013. Web. 20 Jan 2021.

Vancouver:

Mohammad Khorasani S. Microstructural Characterization of Material Properties and Damage in Asphalt Composites. [Internet] [Masters thesis]. Texas A&M University; 2013. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1969.1/149446.

Council of Science Editors:

Mohammad Khorasani S. Microstructural Characterization of Material Properties and Damage in Asphalt Composites. [Masters Thesis]. Texas A&M University; 2013. Available from: http://hdl.handle.net/1969.1/149446

University of Wollongong

10. Lian, Cheryl Pei Ling. Characterisation and application of the MOSkin radiation dosimeter at clinical kilovoltage x-ray energies.

Degree: Doctor of Philosophy, 2013, University of Wollongong

URL: 029903 Medical Physics, 090302 Biomechanical Engineering, 090304 Medical Devices ; https://ro.uow.edu.au/theses/3935

► X-ray Computed Tomography (CT) is an invaluable diagnostic imaging tool in clinical practice. However in recent years due to the widespread availability and burgeoning… (more)

Subjects/Keywords: MOSFET; x-ray CT; radiation dosimetry; radiation protection

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APA (6^th Edition):

Lian, C. P. L. (2013). Characterisation and application of the MOSkin radiation dosimeter at clinical kilovoltage x-ray energies. (Doctoral Dissertation). University of Wollongong. Retrieved from 029903 Medical Physics, 090302 Biomechanical Engineering, 090304 Medical Devices ; https://ro.uow.edu.au/theses/3935

Chicago Manual of Style (16^th Edition):

Lian, Cheryl Pei Ling. “Characterisation and application of the MOSkin radiation dosimeter at clinical kilovoltage x-ray energies.” 2013. Doctoral Dissertation, University of Wollongong. Accessed January 20, 2021. 029903 Medical Physics, 090302 Biomechanical Engineering, 090304 Medical Devices ; https://ro.uow.edu.au/theses/3935.

MLA Handbook (7^th Edition):

Lian, Cheryl Pei Ling. “Characterisation and application of the MOSkin radiation dosimeter at clinical kilovoltage x-ray energies.” 2013. Web. 20 Jan 2021.

Vancouver:

Lian CPL. Characterisation and application of the MOSkin radiation dosimeter at clinical kilovoltage x-ray energies. [Internet] [Doctoral dissertation]. University of Wollongong; 2013. [cited 2021 Jan 20]. Available from: 029903 Medical Physics, 090302 Biomechanical Engineering, 090304 Medical Devices ; https://ro.uow.edu.au/theses/3935.

Council of Science Editors:

Lian CPL. Characterisation and application of the MOSkin radiation dosimeter at clinical kilovoltage x-ray energies. [Doctoral Dissertation]. University of Wollongong; 2013. Available from: 029903 Medical Physics, 090302 Biomechanical Engineering, 090304 Medical Devices ; https://ro.uow.edu.au/theses/3935

University of Manchester

11. Wadeson, Nicola Lisa. Modelling and Correction of Scatter in a Switched Source Multi-Ring Detector X-ray CT machine.

Degree: 2011, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:125710

► The RTT80 cone beam x-ray computed tomography system, developed by Rapiscan Systems Ltd, uses switched x-ray sources and fixed offset detector rings to remove the… (more)

Subjects/Keywords: X-ray cone beam CT; RTT; Monte Carlo; Geant4; Scatter correction

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APA (6^th Edition):

Wadeson, N. L. (2011). Modelling and Correction of Scatter in a Switched Source Multi-Ring Detector X-ray CT machine. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:125710

Chicago Manual of Style (16^th Edition):

Wadeson, Nicola Lisa. “Modelling and Correction of Scatter in a Switched Source Multi-Ring Detector X-ray CT machine.” 2011. Doctoral Dissertation, University of Manchester. Accessed January 20, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:125710.

MLA Handbook (7^th Edition):

Wadeson, Nicola Lisa. “Modelling and Correction of Scatter in a Switched Source Multi-Ring Detector X-ray CT machine.” 2011. Web. 20 Jan 2021.

Vancouver:

Wadeson NL. Modelling and Correction of Scatter in a Switched Source Multi-Ring Detector X-ray CT machine. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2021 Jan 20]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:125710.

Council of Science Editors:

Wadeson NL. Modelling and Correction of Scatter in a Switched Source Multi-Ring Detector X-ray CT machine. [Doctoral Dissertation]. University of Manchester; 2011. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:125710

University of Arizona

12. Kulkarni, Ramaprasad. Image Segmentation and Analysis Methods and Their Evaluation on Synthesized Porous Media Data .

Degree: 2018, University of Arizona

URL: http://hdl.handle.net/10150/628471

► Nondestructive imaging techniques such as X-ray computed tomography (CT) provide powerful means for quantitative analysis of porous material properties. Three-dimensional reconstructions from segmented X-ray CT… (more)

▼ Nondestructive imaging techniques such as X-ray computed tomography (CT) provide powerful means for quantitative analysis of porous material properties. Three-dimensional reconstructions from segmented X-ray CT images yield detailed information about density distribution, pore structure, pore connectivity, and phase interfaces that can be applied as boundary conditions for fluid dynamics simulations. However, accurate segmentation of grayscale X-ray CT data to discern solid medium constituents and fluid phases remains a significant challenge. To advance image segmentation, one objective of the dissertation research was the development of a new semi-automated multiphase segmentation algorithm combining K-means (KM) clustering with a Markov random field (MRF) framework. X-ray CT data were segmented with the new KM-MRF algorithm and with KM clustering only. A comparison of segmentation results shows that in the presence of noise inherent to X-ray CT data acquisition, KM-MRF yields fewer misclassification errors than sole KM clustering. Because the exact phase (i.e., solid, liquid, and air) boundaries of an imaged porous medium are not known a priori, there is no reliable reference data for meaningful validation of porous media segmentation algorithms. To overcome this problem, a second objective of the dissertation research was to synthesize a three-phase porous medium proxy with exactly known phase boundaries by using a discrete element method in conjunction with lattice Boltzmann fluid dynamics simulation. This approach generates an artificial porous medium with known phase boundaries, comprising spherical particles along with liquid and air. Poisson noise was added,and the contrast and resolution of the synthesized medium were varied to simulate image degradation experienced during X-ray CT data acquisition. The degraded data were then used to compare the performance of the KM-MRF, KM clustering, multi-Otsu and multi-SVM segmentation algorithms. The Dice and Jaccard similarity coefficients, and the misclassification, volume fraction, and surface area errors were used as performance criteria. The final objective of the dissertation research was the development of an efficient algorithm for quantification of phase interfacial area, a governing property for many porous media processes related to contaminant transport and remediation. An improved surface area estimator for three-dimensional objects based on the local Gaussian curvature was developed and compared with state-of-the art weighted-voxel techniques for five basic geometries. The relative error for the newly developed method was significantly smaller than the errors obtained with the competing weighted-voxel methods for objects with a combination of planar and a small proportion of curved surfaces, and comparable for objects with at least some proportion of curved surfaces. Advisors/Committee Members: Rodriguez, Jeffrey J (advisor), Tuller, Markus (advisor), Bilgin, Ali (committeemember), Akoglu, Ali (committeemember).

Subjects/Keywords: Gaussian curvature; Image segmentation; machine learning; surface area; X-ray CT

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APA (6^th Edition):

Kulkarni, R. (2018). Image Segmentation and Analysis Methods and Their Evaluation on Synthesized Porous Media Data . (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/628471

Chicago Manual of Style (16^th Edition):

Kulkarni, Ramaprasad. “Image Segmentation and Analysis Methods and Their Evaluation on Synthesized Porous Media Data .” 2018. Doctoral Dissertation, University of Arizona. Accessed January 20, 2021. http://hdl.handle.net/10150/628471.

MLA Handbook (7^th Edition):

Kulkarni, Ramaprasad. “Image Segmentation and Analysis Methods and Their Evaluation on Synthesized Porous Media Data .” 2018. Web. 20 Jan 2021.

Vancouver:

Kulkarni R. Image Segmentation and Analysis Methods and Their Evaluation on Synthesized Porous Media Data . [Internet] [Doctoral dissertation]. University of Arizona; 2018. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10150/628471.

Council of Science Editors:

Kulkarni R. Image Segmentation and Analysis Methods and Their Evaluation on Synthesized Porous Media Data . [Doctoral Dissertation]. University of Arizona; 2018. Available from: http://hdl.handle.net/10150/628471

University of Canterbury

13. Doesburg, Robert Michael Nicolas. The MARS Photon Processing Cameras for Spectral CT.

Degree: PhD, Physics, 2012, University of Canterbury

URL: http://dx.doi.org/10.26021/7818

► This thesis is about the development of the MARS camera: a standalone portable digital x-ray camera with spectral sensitivity. It is built for use in… (more)

Subjects/Keywords: Photon processing; x-ray camera; Medipix; Spectral CT; MARS

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APA (6^th Edition):

Doesburg, R. M. N. (2012). The MARS Photon Processing Cameras for Spectral CT. (Doctoral Dissertation). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/7818

Chicago Manual of Style (16^th Edition):

Doesburg, Robert Michael Nicolas. “The MARS Photon Processing Cameras for Spectral CT.” 2012. Doctoral Dissertation, University of Canterbury. Accessed January 20, 2021. http://dx.doi.org/10.26021/7818.

MLA Handbook (7^th Edition):

Doesburg, Robert Michael Nicolas. “The MARS Photon Processing Cameras for Spectral CT.” 2012. Web. 20 Jan 2021.

Vancouver:

Doesburg RMN. The MARS Photon Processing Cameras for Spectral CT. [Internet] [Doctoral dissertation]. University of Canterbury; 2012. [cited 2021 Jan 20]. Available from: http://dx.doi.org/10.26021/7818.

Council of Science Editors:

Doesburg RMN. The MARS Photon Processing Cameras for Spectral CT. [Doctoral Dissertation]. University of Canterbury; 2012. Available from: http://dx.doi.org/10.26021/7818

Virginia Tech

14. Pen, Olga Vladimirovna. Calculation of the effective atomic number for the iodine contrast agent of the varying concentrations.

Degree: MS, Biomedical Engineering, 2016, Virginia Tech

URL: http://hdl.handle.net/10919/78149

► The author discusses the difficulties that arise with the determination of the concentration of the iodinated contrast agents in the blood stream via the traditional… (more)

Subjects/Keywords: effective atomic number; color CT; x-ray imaging; iodine contrast agent

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APA (6^th Edition):

Pen, O. V. (2016). Calculation of the effective atomic number for the iodine contrast agent of the varying concentrations. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/78149

Chicago Manual of Style (16^th Edition):

Pen, Olga Vladimirovna. “Calculation of the effective atomic number for the iodine contrast agent of the varying concentrations.” 2016. Masters Thesis, Virginia Tech. Accessed January 20, 2021. http://hdl.handle.net/10919/78149.

MLA Handbook (7^th Edition):

Pen, Olga Vladimirovna. “Calculation of the effective atomic number for the iodine contrast agent of the varying concentrations.” 2016. Web. 20 Jan 2021.

Vancouver:

Pen OV. Calculation of the effective atomic number for the iodine contrast agent of the varying concentrations. [Internet] [Masters thesis]. Virginia Tech; 2016. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10919/78149.

Council of Science Editors:

Pen OV. Calculation of the effective atomic number for the iodine contrast agent of the varying concentrations. [Masters Thesis]. Virginia Tech; 2016. Available from: http://hdl.handle.net/10919/78149

University of Texas – Austin

15. Izadi, Anoosha. Quantitative characterization of microstructure of asphalt mixtures to evaluate fatigue crack growth.

Degree: MSin Engineering, Civil Engineering, 2012, University of Texas – Austin

URL: http://hdl.handle.net/2152/ETD-UT-2012-05-5070

► Studies show that the microstructure of the fine aggregate matrix has a significant influence on the mechanical properties and evolution of damage in an asphalt… (more)

▼ Studies show that the microstructure of the fine aggregate matrix has a significant influence on the mechanical properties and evolution of damage in an asphalt mixture. However, very little work has been done to quantitatively characterize the microstructure of the asphalt binder within the fine aggregate matrix of asphalt mixtures. The first objective of this study was to quantitatively characterize the three dimensional microstructure of the asphalt binder within the fine aggregate matrix (FAM) of an asphalt mixture and compare the influence of binder content, coarse aggregate gradation, and fine aggregate gradation on this microstructure. Studies indicate that gradation of the fine aggregate has the most influence of the degree of anisotropy whereas gradation of the coarse aggregate has the most influence on the direction anisotropy of the asphalt mastic within the fine aggregate matrix. Addition of asphalt binder or adjustments to the fine aggregate gradation also resulted in a more uniform distribution of the asphalt mastic within the fine aggregate matrix. The second objective of this study was to compare the internal microstructure of the mortar within a full-scale asphalt mixture to the internal microstructure of the FAM specimen and also conduct a limited evaluation of the influence of mixture properties and methods of compaction on the engineering properties of the FAM specimens. Fatigue cracking is a significant form of pavement distress in flexible pavements. The properties of the sand-asphalt mortars or FAM can be used to characterize the evolution of fatigue crack growth and self-healing in full-scale asphalt mixtures. The results from this study, although limited in number, indicate that in most cases the SGC (Superpave Gyratory Compactor) compacted FAM specimen had a microstructure that most closely resembled the microstructure of the mortar within a full-scale asphalt mixture. Another finding from this study was that, at a given level of damage, the healing characteristic of the three different types of FAM mixes evaluated was not significantly different. This indicates that the healing rate is mostly dictated by the type of binder and not significantly influenced by the gradation or binder content, as long as the volumetric distribution of the mastic was the same. Advisors/Committee Members: Bhasin, Amit (advisor), Smit, Andre (committee member).

Subjects/Keywords: Asphalt mixtures; Microstructure; X-ray CT; SLD; Fatigue cracking; Image processing

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APA (6^th Edition):

Izadi, A. (2012). Quantitative characterization of microstructure of asphalt mixtures to evaluate fatigue crack growth. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/ETD-UT-2012-05-5070

Chicago Manual of Style (16^th Edition):

Izadi, Anoosha. “Quantitative characterization of microstructure of asphalt mixtures to evaluate fatigue crack growth.” 2012. Masters Thesis, University of Texas – Austin. Accessed January 20, 2021. http://hdl.handle.net/2152/ETD-UT-2012-05-5070.

MLA Handbook (7^th Edition):

Izadi, Anoosha. “Quantitative characterization of microstructure of asphalt mixtures to evaluate fatigue crack growth.” 2012. Web. 20 Jan 2021.

Vancouver:

Izadi A. Quantitative characterization of microstructure of asphalt mixtures to evaluate fatigue crack growth. [Internet] [Masters thesis]. University of Texas – Austin; 2012. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2152/ETD-UT-2012-05-5070.

Council of Science Editors:

Izadi A. Quantitative characterization of microstructure of asphalt mixtures to evaluate fatigue crack growth. [Masters Thesis]. University of Texas – Austin; 2012. Available from: http://hdl.handle.net/2152/ETD-UT-2012-05-5070

University of Manchester

16. Foster, Richard. A Multi Method Approach Towards the Study and Characterisation of Simulated Enhanced Actinide Removal Plant Particulates.

Degree: 2016, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:305689

►

The introduction of the Enhanced Actinide Removal Plant (EARP) at Sellafield in 1994 was designed to decontaminate radioactive effluents produced during nuclear fuel reprocessing. Through… (more)

▼

The introduction of the Enhanced Actinide Removal Plant (EARP) at Sellafield in 1994 was designed to decontaminate radioactive effluents produced during nuclear fuel reprocessing. Through the action of flocculation with iron, followed by filtration, the effluents are decontaminated before being discharging to sea. The plant has been in successful operation for the past 20 years, and has made a significant difference to the level of radioactivity of the waste. However, little is known about the formed flocs. Particular concern focuses around future changes to the effluent compositions to be processed through EARP. These future feeds will potentially contain significantly less iron, thus potentially impacting upon the flocculation process and the efficiency of the decontamination process.The effluents currently treated contain significant concentrations of iron, stemming from the Magnox fuel reprocessing plant, along with actinides, fission and corrosion products. The flocculation of these acidic radioactive ferric feeds results in the formation of solid iron hydroxide flocs with encapsulated radioactivity. The flocs are then filtered, encapsulated and stored. It is envisioned that by characterising the floc properties, both physically and chemically a greater understanding of EARP can be obtained, ultimately leading to a maintained process efficiency with alternative feed compositions.The effect of a reduction in iron concentration on the chemical and physical properties of the flocs has been studied. The presence of any iron in the mock effluents was found to beneficially increase the contaminant decontamination factors (DF). However, the efficacy of this increase varied between contaminates. The DFs of group I and II metals ranged from 7.10 to 1.19 while lead ranged from 4x105 to 1.60, dependent upon iron concentration. Transition metal and lanthanide contaminants were marginally affected. With the use of agar embedding, the ‘liquid form’ of the flocs has been retained for two and three dimensional observations. SEM/EDX analysis has allowed for the inspection and chemical characterisation of the flocs while 2D microscope image analysis has allowed for the study of floc size and shape. A range of diameters, 300 – 1500 μm were found. Three dimensional X-ray Computer Tomography (3D X-ray CT) conducted at the Manchester X-ray Imaging Facility (MXIF) has led to the physical characterisation and classification of the flocs. Further, by studying the 3D shape it has been possible to classify a floc as a granule, fibre, chip or blade according to the Zingg classification with the majority of formed flocs being classified as granules.

N/A

Advisors/Committee Members: BANFORD, ANTHONY AW, HEATH, SARAH SL, Banford, Anthony, Heath, Sarah, Sharrad, Clint.

Subjects/Keywords: EARP; Enhanced Actinide Removal Plant; Sellafield; Floc; Flocculation; X-ray CT; X-ray Computed Tomography; Particle; Zingg Classification

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APA (6^th Edition):

Foster, R. (2016). A Multi Method Approach Towards the Study and Characterisation of Simulated Enhanced Actinide Removal Plant Particulates. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:305689

Chicago Manual of Style (16^th Edition):

Foster, Richard. “A Multi Method Approach Towards the Study and Characterisation of Simulated Enhanced Actinide Removal Plant Particulates.” 2016. Doctoral Dissertation, University of Manchester. Accessed January 20, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:305689.

MLA Handbook (7^th Edition):

Foster, Richard. “A Multi Method Approach Towards the Study and Characterisation of Simulated Enhanced Actinide Removal Plant Particulates.” 2016. Web. 20 Jan 2021.

Vancouver:

Foster R. A Multi Method Approach Towards the Study and Characterisation of Simulated Enhanced Actinide Removal Plant Particulates. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2021 Jan 20]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:305689.

Council of Science Editors:

Foster R. A Multi Method Approach Towards the Study and Characterisation of Simulated Enhanced Actinide Removal Plant Particulates. [Doctoral Dissertation]. University of Manchester; 2016. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:305689

Brno University of Technology

17. Holub, Zbyněk. Redukce šumu u nízkodávkových CT snímků: Noise reduction for low dose CT data.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/40699

► The aim of this work is comparing of methods which are used for filtration of low dose CT images. This filtration is realized due to… (more)

Subjects/Keywords: filtrace obrazových dat; rentgenová výpočetní tomografie CT; nízkodávkové CT; Wienerův korekční faktor; vlnková transformace; filtration; x-ray computed tomography; CT; low dose CT; Wiener‘s correction coefficient; wavelet transform.

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APA (6^th Edition):

Holub, Z. (2019). Redukce šumu u nízkodávkových CT snímků: Noise reduction for low dose CT data. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/40699

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Holub, Zbyněk. “Redukce šumu u nízkodávkových CT snímků: Noise reduction for low dose CT data.” 2019. Thesis, Brno University of Technology. Accessed January 20, 2021. http://hdl.handle.net/11012/40699.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Holub, Zbyněk. “Redukce šumu u nízkodávkových CT snímků: Noise reduction for low dose CT data.” 2019. Web. 20 Jan 2021.

Vancouver:

Holub Z. Redukce šumu u nízkodávkových CT snímků: Noise reduction for low dose CT data. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/11012/40699.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Holub Z. Redukce šumu u nízkodávkových CT snímků: Noise reduction for low dose CT data. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/40699

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Michigan

18. Long, Yong. Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy.

Degree: PhD, Electrical Engineering: Systems, 2011, University of Michigan

URL: http://hdl.handle.net/2027.42/86254

► Image reconstruction and motion estimation are very important for image-guided radiotherapy (IGRT). Three-dimensional reconstruction of patient anatomy using X-ray computed tomography (CT) allows identification of… (more)

▼ Image reconstruction and motion estimation are very important for image-guided radiotherapy (IGRT). Three-dimensional reconstruction of patient anatomy using X-ray computed tomography (CT) allows identification of the location of a tumor prior to treatment. The locations of tumorsmay change during actual treatment due to movement such as respiratory motion. Motion estimation helps optimize the accuracy and precision of radiotherapy so that more of the normal surrounding tissue can be spared. This dissertation addresses several important issues related to these two core components of IGRT. Firstly, we developed two new separable footprint (SF) projector methods for X-ray conebeam CT. The SF projectors approximate the voxel footprint functions as 2D separable functions. The SF-TR projector uses trapezoid functions in the transaxial direction and rectangular functions in the axial direction, whereas the SF-TT projector uses trapezoid functions in both directions. Both SF projector methods are more accurate than the distance-driven (DD) projector, which is a current state-of-the-art method in the field. The SF-TT projector is more accurate than the SF-TR projector for rays associated with large cone angles. In addition, the SF-TR projector has similar computation speed with the DD projector and the SF-TT projector is about two times slower. Secondly, we proposed a statistical penalized weighted least-squares (PWLS) method with edge-preserving regularization to reconstruct two basis materials from a single-energy CT scan acquired with differential filtration, such as a split filter or a bow-tie filter. It requires only the use of suitable filters between the X-ray tube and the patient. For both filtration methods, the proposed PWLS method reconstructed soft tissue and bone images with lower RMS errors, reduced the beam-hardening artifacts much more effectively and produced lower noise, as compared with the traditional non-iterative Joseph and Spital method. Thirdly, we conducted an objective characterization of the influence of rotational arc length on accuracy of motion estimation for projection-to-volume targeting during rotational therapy. Simulations illustrate the potential accuracy of limited-angle projection-to-volume alignment. Registration accuracy can be sensitive to angular center, tends to be lower along direction of the projection set, and tends to decrease away from the rotation center. Advisors/Committee Members: Balter, James M. (committee member), Fessler, Jeffrey A. (committee member), Clinthorne, Neal H. (committee member), Hero Iii, Alfred O. (committee member), Meyer, Charles R. (committee member).

Subjects/Keywords: X-Ray CT; Statistical Image Reconstruction; Image-Guided Radiotherapy; Image Registration; Forward and Back-projection; Dual-Energy CT; Electrical Engineering; Engineering

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APA (6^th Edition):

Long, Y. (2011). Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/86254

Chicago Manual of Style (16^th Edition):

Long, Yong. “Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy.” 2011. Doctoral Dissertation, University of Michigan. Accessed January 20, 2021. http://hdl.handle.net/2027.42/86254.

MLA Handbook (7^th Edition):

Long, Yong. “Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy.” 2011. Web. 20 Jan 2021.

Vancouver:

Long Y. Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy. [Internet] [Doctoral dissertation]. University of Michigan; 2011. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2027.42/86254.

Council of Science Editors:

Long Y. Statistical Image Reconstruction and Motion Estimation for Image-Guided Radiotherapy. [Doctoral Dissertation]. University of Michigan; 2011. Available from: http://hdl.handle.net/2027.42/86254

Brno University of Technology

19. Tesařová, Markéta. Využití průmyslové rentgenové počítačové mikrotomografie ve vývojové biologii: Implementation of industrial X-ray computed microtomography in developmental biology.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/83338

► X–ray computed microtomography (CT) is an imaging method for three-dimensional (3D) observation of the inner structure of objects. The laboratory of X-ray computed micro and… (more)

Subjects/Keywords: rentgenová počítačová mikrotomografie; CT; 3D zobrazování; zpracování obrazu; X-ray computed microtomography; CT; 3D imaging; image processing

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tesařová, M. (2019). Využití průmyslové rentgenové počítačové mikrotomografie ve vývojové biologii: Implementation of industrial X-ray computed microtomography in developmental biology. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/83338

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tesařová, Markéta. “Využití průmyslové rentgenové počítačové mikrotomografie ve vývojové biologii: Implementation of industrial X-ray computed microtomography in developmental biology.” 2019. Thesis, Brno University of Technology. Accessed January 20, 2021. http://hdl.handle.net/11012/83338.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tesařová, Markéta. “Využití průmyslové rentgenové počítačové mikrotomografie ve vývojové biologii: Implementation of industrial X-ray computed microtomography in developmental biology.” 2019. Web. 20 Jan 2021.

Vancouver:

Tesařová M. Využití průmyslové rentgenové počítačové mikrotomografie ve vývojové biologii: Implementation of industrial X-ray computed microtomography in developmental biology. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/11012/83338.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tesařová M. Využití průmyslové rentgenové počítačové mikrotomografie ve vývojové biologii: Implementation of industrial X-ray computed microtomography in developmental biology. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/83338

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

20. Šokac Mario. Hibridni model za segmentaciju snimaka generisanih primenom kompjuterizovane tomografije.

Degree: 2019, University of Novi Sad

URL: https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija156353277654751.pdf?controlNumber=(BISIS)110955&fileName=156353277654751.pdf&id=13222&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=110955&source=OATD&language=en

►

Kompjuterizovana tomografija (CT) je u poslednje vreme ušla na velika vrata sa razvojem industrijskih CT sistema, usled njene primene u različitim oblastima, a uveliko… (more)

Subjects/Keywords: industrijska kompjuterizovana tomografija (CT), segmentacija slike, hibridna metoda, analiza slike; industrial X-Ray Computed Tomography (X-Ray CT), Segmentation, Hybrid Method, Image Analysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mario, �. (2019). Hibridni model za segmentaciju snimaka generisanih primenom kompjuterizovane tomografije. (Thesis). University of Novi Sad. Retrieved from https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija156353277654751.pdf?controlNumber=(BISIS)110955&fileName=156353277654751.pdf&id=13222&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=110955&source=OATD&language=en

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mario, Šokac. “Hibridni model za segmentaciju snimaka generisanih primenom kompjuterizovane tomografije.” 2019. Thesis, University of Novi Sad. Accessed January 20, 2021. https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija156353277654751.pdf?controlNumber=(BISIS)110955&fileName=156353277654751.pdf&id=13222&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=110955&source=OATD&language=en.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mario, Šokac. “Hibridni model za segmentaciju snimaka generisanih primenom kompjuterizovane tomografije.” 2019. Web. 20 Jan 2021.

Vancouver:

Mario �. Hibridni model za segmentaciju snimaka generisanih primenom kompjuterizovane tomografije. [Internet] [Thesis]. University of Novi Sad; 2019. [cited 2021 Jan 20]. Available from: https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija156353277654751.pdf?controlNumber=(BISIS)110955&fileName=156353277654751.pdf&id=13222&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=110955&source=OATD&language=en.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mario �. Hibridni model za segmentaciju snimaka generisanih primenom kompjuterizovane tomografije. [Thesis]. University of Novi Sad; 2019. Available from: https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija156353277654751.pdf?controlNumber=(BISIS)110955&fileName=156353277654751.pdf&id=13222&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=110955&source=OATD&language=en

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Michigan

21. McGaffin, Madison G. X-ray CT Image Reconstruction on Highly-Parallel Architectures.

Degree: PhD, Electrical Engineering: Systems, 2015, University of Michigan

URL: http://hdl.handle.net/2027.42/113551

► Model-based image reconstruction (MBIR) methods for X-ray CT use accurate models of the CT acquisition process, the statistics of the noisy measurements, and noise-reducing regularization… (more)

▼ Model-based image reconstruction (MBIR) methods for X-ray CT use accurate models of the CT acquisition process, the statistics of the noisy measurements, and noise-reducing regularization to produce potentially higher quality images than conventional methods even at reduced X-ray doses. They do this by minimizing a statistically motivated high-dimensional cost function; the high computational cost of numerically minimizing this function has prevented MBIR methods from reaching ubiquity in the clinic. Modern highly-parallel hardware like graphics processing units (GPUs) may offer the computational resources to solve these reconstruction problems quickly, but simply "translating" existing algorithms designed for conventional processors to the GPU may not fully exploit the hardware's capabilities. This thesis proposes GPU-specialized image denoising and image reconstruction algorithms. The proposed image denoising algorithm uses group coordinate descent with carefully structured groups. The algorithm converges very rapidly: in one experiment, it denoises a 65 megapixel image in about 1.5 seconds, while the popular Chambolle-Pock primal-dual algorithm running on the same hardware takes over a minute to reach the same level of accuracy. For X-ray CT reconstruction, this thesis uses duality and group coordinate ascent to propose an alternative to the popular ordered subsets (OS) method. Similar to OS, the proposed method can use a subset of the data to update the image. Unlike OS, the proposed method is convergent. In one helical CT reconstruction experiment, an implementation of the proposed algorithm using one GPU converges more quickly than a state-of-the-art algorithm converges using four GPUs. Using four GPUs, the proposed algorithm reaches near convergence of a wide-cone axial reconstruction problem with over 220 million voxels in only 11 minutes. Advisors/Committee Members: Fessler, Jeffrey A. (committee member), Epelman, Marina A. (committee member), Balzano, Laura Kathryn (committee member), Nadakuditi, Rajesh Rao (committee member).

Subjects/Keywords: Model-based image reconstruction; X-ray CT; Parallel computing; Electrical Engineering; Engineering

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APA (6^th Edition):

McGaffin, M. G. (2015). X-ray CT Image Reconstruction on Highly-Parallel Architectures. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/113551

Chicago Manual of Style (16^th Edition):

McGaffin, Madison G. “X-ray CT Image Reconstruction on Highly-Parallel Architectures.” 2015. Doctoral Dissertation, University of Michigan. Accessed January 20, 2021. http://hdl.handle.net/2027.42/113551.

MLA Handbook (7^th Edition):

McGaffin, Madison G. “X-ray CT Image Reconstruction on Highly-Parallel Architectures.” 2015. Web. 20 Jan 2021.

Vancouver:

McGaffin MG. X-ray CT Image Reconstruction on Highly-Parallel Architectures. [Internet] [Doctoral dissertation]. University of Michigan; 2015. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2027.42/113551.

Council of Science Editors:

McGaffin MG. X-ray CT Image Reconstruction on Highly-Parallel Architectures. [Doctoral Dissertation]. University of Michigan; 2015. Available from: http://hdl.handle.net/2027.42/113551

Penn State University

22. Torrealba, Victor Antonio. Pore-scale investigation on compaction-dependent characteristics of granular packs and their impact on fluid distribution.

Degree: 2014, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/21303

► Understanding the coupled effect of rock compaction and changing stress conditions on multiphase flow in porous media is of fundamental importance for many subsurface activities… (more)

▼ Understanding the coupled effect of rock compaction and changing stress conditions on multiphase flow in porous media is of fundamental importance for many subsurface activities including enhanced oil recovery, water drawdown from aquifers, and geologic carbon storage. Geomechanical properties of complex porous systems are dynamically linked to flow conditions, but their feedback relationship is often oversimplified due to the difficulty of representing pore-scale stress deformation and multiphase flow characteristics in high fidelity. In this work we performed pore-scale experiments of single- and multi-phase flow through bead packs at different confining pressure conditions to elucidate compaction-dependent characteristics of granular packs and their impact on fluid flow. A series of drainage and imbibition cycles was conducted on a water-wet soda-lime glass bead pack under varying confining stress conditions. Simultaneously, X-ray micro-CT was used to visualize and quantify the degree of compaction and fluid distribution corresponding with each stress condition and injection cycle. Micro-CT images were segmented using a gradient-based method to identify fluids (e.g. oil and water), and solid phase redistribution throughout the different experimental stages. Results demonstrate that the degree of compaction has a significant influence on phase trapping. It was found that an increase in confining pressure has a stabilizing effect on the displacing front during both drainage and imbibition. Alternatively, the compaction process was found to promote the disconnection of non-wetting blobs during imbibition, which in turn results into poor oil recovery by water flooding. In addition, the changes of both porosity and tortuosity were dampened as the confining pressure was increased. Finally, specific surface area was found to be more sensitive to stress conditions than porosity, which suggests that caution must be taken when considering scalability of these properties for practical modeling purposes. Advisors/Committee Members: Zuleima T Karpyn, Thesis Advisor/Co-Advisor.

Subjects/Keywords: porous media; compaction; multiphase fluids; pore-scale; drainage; imbibition; X-ray CT scanning

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APA (6^th Edition):

Torrealba, V. A. (2014). Pore-scale investigation on compaction-dependent characteristics of granular packs and their impact on fluid distribution. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/21303

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Torrealba, Victor Antonio. “Pore-scale investigation on compaction-dependent characteristics of granular packs and their impact on fluid distribution.” 2014. Thesis, Penn State University. Accessed January 20, 2021. https://submit-etda.libraries.psu.edu/catalog/21303.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Torrealba, Victor Antonio. “Pore-scale investigation on compaction-dependent characteristics of granular packs and their impact on fluid distribution.” 2014. Web. 20 Jan 2021.

Vancouver:

Torrealba VA. Pore-scale investigation on compaction-dependent characteristics of granular packs and their impact on fluid distribution. [Internet] [Thesis]. Penn State University; 2014. [cited 2021 Jan 20]. Available from: https://submit-etda.libraries.psu.edu/catalog/21303.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Torrealba VA. Pore-scale investigation on compaction-dependent characteristics of granular packs and their impact on fluid distribution. [Thesis]. Penn State University; 2014. Available from: https://submit-etda.libraries.psu.edu/catalog/21303

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

23. Wang, Hongsheng. Digital Rock Reconstruction And Property Calculation Of Fractured Shale Rock Samples.

Degree: MS, Petroleum Engineering, 2018, University of North Dakota

URL: https://commons.und.edu/theses/2436

► As the preferential flow channels in the shale reservoir, the fracture systems including the natural micro-cracks and hydraulic fractures have received great attention from… (more)

▼ As the preferential flow channels in the shale reservoir, the fracture systems including the natural micro-cracks and hydraulic fractures have received great attention from the whole energy industry worldwide. However, it is challenging to quantify the fracture systems in the shale rocks precisely because most of well-developed “histogram-based” image processing techniques cannot handle the case of small target segmentation. Because the fracture apertures are very thin, the over-segmentation or insufficient segmentation would lead to significant error in the quantification, including the fracture porosity, aperture, length, tortuosity etc., which would lead to serious mistakes to the property calculation. In this research, two novel image processing methods are proposed. The self-adaptive image enhancement method employs incomplete beta function and simulated annealing algorithm to modify the grayscale intensity histogram. The contrast between the target and the background of the transformed gray image reaches the maximum. Also, “self-adaptive” means the enhancement process is specified by the input images. The comparison of segmentation results before and after the image enhancement show that the target becomes more obvious to the naked eyes and the precise fracture porosity of the test image is 4.02 %. The multi-stage image segmentation (MSS) method combines the global and local information of the image to finish the segmentation. The generated three-dimensional model provides visualization of the fracture systems existing in the core. Also, the important parameters of the fractures can be obtained, including aperture, length, tortuosity, and porosity. Compared with the real permeability from the core-flooding experiments, the permeability calculated from the MSS method has the minimum error of 22.1 %. The results show that the proposed methods in this research can be effective tools for the precise quantification of the thin fracture systems. Advisors/Committee Members: Minou Rabiei.

Subjects/Keywords: Image Enhancement; Image Segmentation; Permeability; SEM Scanning; Shale Rock; X-ray CT Scanning

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APA (6^th Edition):

Wang, H. (2018). Digital Rock Reconstruction And Property Calculation Of Fractured Shale Rock Samples. (Masters Thesis). University of North Dakota. Retrieved from https://commons.und.edu/theses/2436

Chicago Manual of Style (16^th Edition):

Wang, Hongsheng. “Digital Rock Reconstruction And Property Calculation Of Fractured Shale Rock Samples.” 2018. Masters Thesis, University of North Dakota. Accessed January 20, 2021. https://commons.und.edu/theses/2436.

MLA Handbook (7^th Edition):

Wang, Hongsheng. “Digital Rock Reconstruction And Property Calculation Of Fractured Shale Rock Samples.” 2018. Web. 20 Jan 2021.

Vancouver:

Wang H. Digital Rock Reconstruction And Property Calculation Of Fractured Shale Rock Samples. [Internet] [Masters thesis]. University of North Dakota; 2018. [cited 2021 Jan 20]. Available from: https://commons.und.edu/theses/2436.

Council of Science Editors:

Wang H. Digital Rock Reconstruction And Property Calculation Of Fractured Shale Rock Samples. [Masters Thesis]. University of North Dakota; 2018. Available from: https://commons.und.edu/theses/2436

Washington State University

24. [No author]. MICROSTRUCTURAL ANALYSIS OF UNSATURATED GRANULAR SOILS USING X-RAY COMPUTED TOMOGRAPHY .

Degree: 2013, Washington State University

URL: http://hdl.handle.net/2376/4949

► This study presents microstructural characterization of partially saturated granular soils using X-ray computed tomography (CT). In the funicular and pendular saturation regimes of unsaturated soils,… (more)

Subjects/Keywords: Engineering; effective stress; fabric tensor; Image processing; Suction; unsaturated granular soils; X-ray CT

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APA (6^th Edition):

author], [. (2013). MICROSTRUCTURAL ANALYSIS OF UNSATURATED GRANULAR SOILS USING X-RAY COMPUTED TOMOGRAPHY . (Thesis). Washington State University. Retrieved from http://hdl.handle.net/2376/4949

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

author], [No. “MICROSTRUCTURAL ANALYSIS OF UNSATURATED GRANULAR SOILS USING X-RAY COMPUTED TOMOGRAPHY .” 2013. Thesis, Washington State University. Accessed January 20, 2021. http://hdl.handle.net/2376/4949.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

author], [No. “MICROSTRUCTURAL ANALYSIS OF UNSATURATED GRANULAR SOILS USING X-RAY COMPUTED TOMOGRAPHY .” 2013. Web. 20 Jan 2021.

Vancouver:

author] [. MICROSTRUCTURAL ANALYSIS OF UNSATURATED GRANULAR SOILS USING X-RAY COMPUTED TOMOGRAPHY . [Internet] [Thesis]. Washington State University; 2013. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2376/4949.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

author] [. MICROSTRUCTURAL ANALYSIS OF UNSATURATED GRANULAR SOILS USING X-RAY COMPUTED TOMOGRAPHY . [Thesis]. Washington State University; 2013. Available from: http://hdl.handle.net/2376/4949

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

25. Carlos, Jacob. Nanoparticles as X-ray CT Imaging Contrast Agents in Saturated Porous Media.

Degree: 2020, University of Waterloo

URL: http://hdl.handle.net/10012/16186

► Parallels exist between medical imaging techniques, such as X-ray computed tomography (CT) or magnetic resonance imaging, and geophysical methods used to analyze the subsurface, such… (more)

Subjects/Keywords: X-ray CT; nanoparticles; contrast agents; geophysics; glass beads; iron oxide; bismuth ferrite; sodium iodide

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APA (6^th Edition):

Carlos, J. (2020). Nanoparticles as X-ray CT Imaging Contrast Agents in Saturated Porous Media. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/16186

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Carlos, Jacob. “Nanoparticles as X-ray CT Imaging Contrast Agents in Saturated Porous Media.” 2020. Thesis, University of Waterloo. Accessed January 20, 2021. http://hdl.handle.net/10012/16186.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Carlos, Jacob. “Nanoparticles as X-ray CT Imaging Contrast Agents in Saturated Porous Media.” 2020. Web. 20 Jan 2021.

Vancouver:

Carlos J. Nanoparticles as X-ray CT Imaging Contrast Agents in Saturated Porous Media. [Internet] [Thesis]. University of Waterloo; 2020. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10012/16186.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Carlos J. Nanoparticles as X-ray CT Imaging Contrast Agents in Saturated Porous Media. [Thesis]. University of Waterloo; 2020. Available from: http://hdl.handle.net/10012/16186

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Miami

26. Yin, Wupeng. A Simplified Onsite Image-Registration Approach for Radiosurgery by Partial CT.

Degree: MS, Biomedical Engineering (Engineering), 2012, University of Miami

URL: https://scholarlyrepository.miami.edu/oa_theses/384

► Stereotactic radiosurgery (SRS) is a kind of method of radiation therapy that uses three-dimensional computerized imaging to precisely guide a high-powered X-ray beam to deliver… (more)

Subjects/Keywords: stereotactic radiosurgery; image-registration; partial CT; mutual information; CyberKnife; X-ray stereotactic imager

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APA (6^th Edition):

Yin, W. (2012). A Simplified Onsite Image-Registration Approach for Radiosurgery by Partial CT. (Thesis). University of Miami. Retrieved from https://scholarlyrepository.miami.edu/oa_theses/384

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yin, Wupeng. “A Simplified Onsite Image-Registration Approach for Radiosurgery by Partial CT.” 2012. Thesis, University of Miami. Accessed January 20, 2021. https://scholarlyrepository.miami.edu/oa_theses/384.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yin, Wupeng. “A Simplified Onsite Image-Registration Approach for Radiosurgery by Partial CT.” 2012. Web. 20 Jan 2021.

Vancouver:

Yin W. A Simplified Onsite Image-Registration Approach for Radiosurgery by Partial CT. [Internet] [Thesis]. University of Miami; 2012. [cited 2021 Jan 20]. Available from: https://scholarlyrepository.miami.edu/oa_theses/384.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yin W. A Simplified Onsite Image-Registration Approach for Radiosurgery by Partial CT. [Thesis]. University of Miami; 2012. Available from: https://scholarlyrepository.miami.edu/oa_theses/384

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manchester

27. Al-Ziayyir, Haitham. Mineralisation-related flow heterogeneity within the Zubair Formation in the Rumaila Oilfield, southern Iraq.

Degree: PhD, 2018, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/mineralisationrelated-flow-heterogeneity-within-the-zubair-formation-in-the-rumaila-oilfield-southern-iraq(40a5c991-8fc4-4481-88df-39b5ce6da159).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785627

► Modelling subsurface deposits is extremely challenging with limited subsurface datasets such as cores, wireline logs and seismic data. However, integrated studies, which rely on extensive… (more)

▼ Modelling subsurface deposits is extremely challenging with limited subsurface datasets such as cores, wireline logs and seismic data. However, integrated studies, which rely on extensive subsurface datasets can lead to improve the quality of spatial and temporal distributions of subsurface reservoirs. Nevertheless, a significant source of uncertainty within subsurface reservoirs is the controls upon hydrodynamic pressure distributions is not well understood. The depositional system is responsible for the style of heterogeneity, which is connected to chemical and physical diagenetic processes. These diagenetic controls may have very local or broad impact on reservoir properties related to pressure distribution. The uncertainty in pressure distribution can be reduced by providing a more detailed knowledge of mineralisation related to flow heterogeneity using Scanning Electron Microscopy (SEM), Energy Dispersive Spectrum (EDX) and X-ray Computed Tomography (X-ray CT). In this study, volume images of representative samples of the mineralised Zubair sandstones obtained using X-ray tomography are to be used as the basis for Computational Fluid Dynamical (CFD) modelling. Three phase segmentation will enable pore space, quartz matrix and in-situ pyrite mineralisation to be isolated from the volume images, enabling mineralised and unmineralised mesh based representations of the samples to be generated. Mineralogical characterisation on a small scale may open new paths for improving understanding of the impact of mineralisation upon fluid flow. As well as reducing uncertainty related to flow heterogeneity on a larger scale. The most obvious finding to emerge from mineralogical characterisation performed in this study is that dendritic pyrite mineralisation comprises potentially signficant control upon pressure distribution. As well as using nondestructive technique such as X-ray computed tomography would be valuable to improve the understanding about the influence of mineralisation upon the trapping and transfer mobile geofluids by applying further studies, which are based on finite volume based flow solver to the collected images.

Subjects/Keywords: sandstone; electrofacies; Zubair Formation; pyrite mineralisation; X-ray CT micro imaging; clay minerals

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APA (6^th Edition):

Al-Ziayyir, H. (2018). Mineralisation-related flow heterogeneity within the Zubair Formation in the Rumaila Oilfield, southern Iraq. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/mineralisationrelated-flow-heterogeneity-within-the-zubair-formation-in-the-rumaila-oilfield-southern-iraq(40a5c991-8fc4-4481-88df-39b5ce6da159).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785627

Chicago Manual of Style (16^th Edition):

Al-Ziayyir, Haitham. “Mineralisation-related flow heterogeneity within the Zubair Formation in the Rumaila Oilfield, southern Iraq.” 2018. Doctoral Dissertation, University of Manchester. Accessed January 20, 2021. https://www.research.manchester.ac.uk/portal/en/theses/mineralisationrelated-flow-heterogeneity-within-the-zubair-formation-in-the-rumaila-oilfield-southern-iraq(40a5c991-8fc4-4481-88df-39b5ce6da159).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785627.

MLA Handbook (7^th Edition):

Al-Ziayyir, Haitham. “Mineralisation-related flow heterogeneity within the Zubair Formation in the Rumaila Oilfield, southern Iraq.” 2018. Web. 20 Jan 2021.

Vancouver:

Al-Ziayyir H. Mineralisation-related flow heterogeneity within the Zubair Formation in the Rumaila Oilfield, southern Iraq. [Internet] [Doctoral dissertation]. University of Manchester; 2018. [cited 2021 Jan 20]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/mineralisationrelated-flow-heterogeneity-within-the-zubair-formation-in-the-rumaila-oilfield-southern-iraq(40a5c991-8fc4-4481-88df-39b5ce6da159).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785627.

Council of Science Editors:

Al-Ziayyir H. Mineralisation-related flow heterogeneity within the Zubair Formation in the Rumaila Oilfield, southern Iraq. [Doctoral Dissertation]. University of Manchester; 2018. Available from: https://www.research.manchester.ac.uk/portal/en/theses/mineralisationrelated-flow-heterogeneity-within-the-zubair-formation-in-the-rumaila-oilfield-southern-iraq(40a5c991-8fc4-4481-88df-39b5ce6da159).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.785627

University of Manchester

28. Wadeson, Nicola Lisa. Modelling and correction of scatter in a switched source multi-ring detector X-ray CT machine.

Degree: PhD, 2011, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/modelling-and-correction-of-scatter-in-a-switched-source-multiring-detector-xray-ct-machine(a6700209-0eef-47d8-9ff0-1fa5e7bb67c5).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632151

► The RTT80 cone beam x-ray computed tomography system, developed by Rapiscan Systems Ltd, uses switched x-ray sources and fixed offset detector rings to remove the… (more)

Subjects/Keywords: 519.2; X-ray cone beam CT; RTT; Monte Carlo; Geant4; Scatter correction

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APA (6^th Edition):

Wadeson, N. L. (2011). Modelling and correction of scatter in a switched source multi-ring detector X-ray CT machine. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/modelling-and-correction-of-scatter-in-a-switched-source-multiring-detector-xray-ct-machine(a6700209-0eef-47d8-9ff0-1fa5e7bb67c5).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632151

Chicago Manual of Style (16^th Edition):

Wadeson, Nicola Lisa. “Modelling and correction of scatter in a switched source multi-ring detector X-ray CT machine.” 2011. Doctoral Dissertation, University of Manchester. Accessed January 20, 2021. https://www.research.manchester.ac.uk/portal/en/theses/modelling-and-correction-of-scatter-in-a-switched-source-multiring-detector-xray-ct-machine(a6700209-0eef-47d8-9ff0-1fa5e7bb67c5).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632151.

MLA Handbook (7^th Edition):

Wadeson, Nicola Lisa. “Modelling and correction of scatter in a switched source multi-ring detector X-ray CT machine.” 2011. Web. 20 Jan 2021.

Vancouver:

Wadeson NL. Modelling and correction of scatter in a switched source multi-ring detector X-ray CT machine. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2021 Jan 20]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/modelling-and-correction-of-scatter-in-a-switched-source-multiring-detector-xray-ct-machine(a6700209-0eef-47d8-9ff0-1fa5e7bb67c5).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632151.

Council of Science Editors:

Wadeson NL. Modelling and correction of scatter in a switched source multi-ring detector X-ray CT machine. [Doctoral Dissertation]. University of Manchester; 2011. Available from: https://www.research.manchester.ac.uk/portal/en/theses/modelling-and-correction-of-scatter-in-a-switched-source-multiring-detector-xray-ct-machine(a6700209-0eef-47d8-9ff0-1fa5e7bb67c5).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632151

University of Manchester

29. Johnson, Mark Richard. An investigation of immature rib fractures resultant from both CPR and abusive scenarios.

Degree: PhD, 2014, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/an-investigation-of-immature-rib-fractures-resultant-from-both-cpr-and-abusive-scenarios(56eb58b0-76ff-4c5c-8720-52415b37945c).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618005

► The presence of rib fractures in deceased infants is generally considered to be highly specific of non-accidental injury, with some pathologists considering them to be… (more)

▼ The presence of rib fractures in deceased infants is generally considered to be highly specific of non-accidental injury, with some pathologists considering them to be evidence of abuse. Although rib fractures may occur during resuscitative efforts in adults, the general consensus is that such injuries are exceptional in infants owing to inherent plasticity within the thoracic region. The recommendation for cardiopulmonary resuscitation (CPR) of infants since the year 2000 has been for the use of the “two-thumb” technique. However, there has been limited biomechanical investigation to what injuries may occur subsequent to this specific form of CPR. The overall aim of this thesis was to determine if two-thumb CPR can cause similar rib injuries to those seen in abusive squeezing cases. In particular, whether or not this CPR technique allows for over excessive levering of the posterior rib over the transverse process of the spine. To this end, physical experimentation simulating both two-thumb CPR and abusive squeezing was performed on an immature swine model of the infant thorax. The results of these tests did not show any significant difference in the force required to compress the thorax by one third its original anterior-posterior diameter in the two scenarios. One third being the recommended depth for CPR compressions. Fractures resultant from the testing were assessed with radiography and computed tomography, techniques commonly used by post-mortem pathologists. The type and nature of the injuries observed were remarkably similar in both scenarios. Rib injuries were primarily seen in the anterior part of the thoracic cage in both CPR and abusive specimens. The specific site of rib fracture was typically close to or within the costochondral joints. There was however an apparent absence of posterior rib fractures in the abusively tested cohort. This is in part due to the slight difference in profile of the neck and head areas within the ribs of the surrogate model. This acts to reduce the mechanical advantage offered by levering over the transverse processes of the spine. This study has shown anterior fractures of the ribs result from two-thumb CPR, challenging the long held belief that CPR cannot produce rib fractures. X-ray CT offered a significant improvement on the ability to detect costochondral junction injuries. This would offer further support to the routine use of X-ray CT in post-mortem examinations of infants where the cause of death is unknown. This has the potential to offer differential interpretation to the cause of rib injuries, especially in cases of sudden unexpected deaths in infancy, where otherwise child abuse may be diagnosed.

Subjects/Keywords: 618.92; Infant Rib Fractures; Non-accidental injury; Ribs; CPR; X-ray CT

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Johnson, M. R. (2014). An investigation of immature rib fractures resultant from both CPR and abusive scenarios. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/an-investigation-of-immature-rib-fractures-resultant-from-both-cpr-and-abusive-scenarios(56eb58b0-76ff-4c5c-8720-52415b37945c).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618005

Chicago Manual of Style (16^th Edition):

Johnson, Mark Richard. “An investigation of immature rib fractures resultant from both CPR and abusive scenarios.” 2014. Doctoral Dissertation, University of Manchester. Accessed January 20, 2021. https://www.research.manchester.ac.uk/portal/en/theses/an-investigation-of-immature-rib-fractures-resultant-from-both-cpr-and-abusive-scenarios(56eb58b0-76ff-4c5c-8720-52415b37945c).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618005.

MLA Handbook (7^th Edition):

Johnson, Mark Richard. “An investigation of immature rib fractures resultant from both CPR and abusive scenarios.” 2014. Web. 20 Jan 2021.

Vancouver:

Johnson MR. An investigation of immature rib fractures resultant from both CPR and abusive scenarios. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2021 Jan 20]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/an-investigation-of-immature-rib-fractures-resultant-from-both-cpr-and-abusive-scenarios(56eb58b0-76ff-4c5c-8720-52415b37945c).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618005.

Council of Science Editors:

Johnson MR. An investigation of immature rib fractures resultant from both CPR and abusive scenarios. [Doctoral Dissertation]. University of Manchester; 2014. Available from: https://www.research.manchester.ac.uk/portal/en/theses/an-investigation-of-immature-rib-fractures-resultant-from-both-cpr-and-abusive-scenarios(56eb58b0-76ff-4c5c-8720-52415b37945c).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618005

IUPUI

30. Kang, Huixiao. Geometric and electrochemical characteristics of lithium ion batteries.

Degree: 2017, IUPUI

URL: http://hdl.handle.net/1805/12351

►

Indiana University-Purdue University Indianapolis (IUPUI)

The geometric and electrochemical characteristics of different lithium ion batteries (LIBs) are investigated in this study. The core work is… (more)

▼

Indiana University-Purdue University Indianapolis (IUPUI)

The geometric and electrochemical characteristics of different lithium ion batteries (LIBs) are investigated in this study. The core work is to study the impact of the calendering process on NMC cathode electrodes performance. X-ray CT image processing by Python, MATLAB, ImageJ and Avizo is utilized in this study. NMC electrodes with different calendering conditions were fabricated to calculate electrochemical properties of the cells. Charge/discharge of the electrodes under 0.1C, 0.2C, 0.4C, 1C, 2C, 4C and 0.1C (retention test) rates were cycled for three times respectively between 4.2 V and 3.0 V. Electrochemical impedance spectroscopy testing was used to further explain the effects of NMC density on rate capability. Geometric properties of NMC electrodes with different calendering conditions were calculated from the computed tomography data of the electrodes. A synchrotron transmission X-ray microscopy tomography system at the Advanced Photon Source of the Argonne National Laboratory was employed to obtain the tomography data. X-ray CT image processing before the data analysis was introduced. Python based Tomopy and ASTRA toolbox were used to filter the original HDF5 data and reconstruction. ImageJ was used to help remove noise, adjust contrast and cropping. Iso2mesh and image processing tool box were used in MATLAB to generate meshed 3D structure of CT data. Geometric properties of NMC electrodes including porosity, pore size distribution, particle size distribution, specific surface area and tortuosity were calculated from the computed tomography data of the electrodes. The geometric and electrochemical analysis show that calendering can increase the electrochemically active area, which lead to improving of the rate capability. However, more calendering will result in crushing of NMC particles, which can reduce the electrode capacity at relatively high C rates. This study shows that the optimum electrochemical performance of NMC electrode at 94:3:3 weight ratio of NMC:binder:carbon black can be achieved by calendering to 3.0 g/cm3 NMC density. LTAP solid electrolyte and NMC cathode material mix electrode-electrolyte X-ray CT data was studied in last chapter. By using 8 kev X-ray energy, we could distinguish NMC active material, LTAP solid electrolyte and the others three phase. On the basis of NMC electrode image processing method, dilation and multiply threshold method is applied to get three-phase 3D geometry. A comparing of connection area between NMC and LTAP of 700psi and 1300psi electrode was analyzed. Geometric properties like tortuosity, di_usion length and e_ective di_usivity were generated from the CT data.

Advisors/Committee Members: Zhu, Likun.

Subjects/Keywords: Lithium ion battery; NMC; LTAP; X-ray CT; Geometric analysis; 3D reconstruction; Solid electrolyte

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kang, H. (2017). Geometric and electrochemical characteristics of lithium ion batteries. (Thesis). IUPUI. Retrieved from http://hdl.handle.net/1805/12351

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kang, Huixiao. “Geometric and electrochemical characteristics of lithium ion batteries.” 2017. Thesis, IUPUI. Accessed January 20, 2021. http://hdl.handle.net/1805/12351.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kang, Huixiao. “Geometric and electrochemical characteristics of lithium ion batteries.” 2017. Web. 20 Jan 2021.

Vancouver:

Kang H. Geometric and electrochemical characteristics of lithium ion batteries. [Internet] [Thesis]. IUPUI; 2017. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/1805/12351.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kang H. Geometric and electrochemical characteristics of lithium ion batteries. [Thesis]. IUPUI; 2017. Available from: http://hdl.handle.net/1805/12351

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations