Events List for the Academic Year
Event Time:
Thursday, May 21, 2020 | 4:00 pm - 5:00 pm
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2020-05-21T16:00:00
2020-05-21T17:00:00
Reflections on Remote Teaching: Lesson Learned and Moving Forward
Event Information:
Please join us for a collaborative discussion on remote teaching:
ADELE RUOSI*, JENNY WONG**, GEORG RIEGER, JESS MCIVER & JAMES CHARBONNEAU
*Science Education Specialist, PHAS/Skylight **Instructional Support Analyst, Skylight/CTLT
Event Location:
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Event Time:
Thursday, May 21, 2020 | 2:00 pm - 3:00 pm
Event Location:
Zoom Meeting ID: 930 3430 9915
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2020-05-21T14:00:00
2020-05-21T15:00:00
CM seminar : Light-Matter Interaction in Charge Density Waves
Event Information:
Abstract: When electrons in a solid are excited with light, they can alter the free energy landscape and access regions that are beyond reach in thermal equilibrium. This accessibility becomes of importance in the presence of phase competition, when one state of matter is favored over another by only a small energy scale that, in principle, is surmountable with light. In this talk, I will discuss a few of our recent ultrafast electron diffraction results on charge density wave (CDW) materials showing that, under far-from-equilibrium conditions, we observe strong evidence for topological defects. These defects are crucial in explaining how the amplitude of the CDW recovers well before long-range phase coherence. I will also show that in certain CDW materials, these defects can be manipulated with light to form metastable structures. Lastly, I will show that light can be used to unleash a CDW that is not present in equilibrium.
Bio: Anshul did his undergraduate studies at UCLA before moving onto get his PhD from the Univeristy of Illinois. There, he developed a new experimental method to probe condensed matter systems which now goes by the name of momentum-resolved electron energy loss spectroscopy or M-EELS. Using this method, he showed that the charge density wave transition in 1T-TiSe2 is driven by exciton condensation. He then pursued postdoctoral research studies at MIT using ultrafast electron diffraction studies on various charge density wave systems. He returned to UCLA where he is now an assistant professor of physics.
Event Location:
Zoom Meeting ID: 930 3430 9915
Event Time:
Thursday, May 14, 2020 | 4:00 pm - 5:00 pm
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2020-05-14T16:00:00
2020-05-14T17:00:00
Show and tell (the sequel)
Event Information:
Several members of the Depertment will give short presentations describing what they're been up to during lockdown.
Scott Oser - "Translating between obscurities: rendering Greek, Pali, Latin,
and physics-speak into Irish"
Austin de St Croix - "Bikes and Boyle's Law"
Teagan Philips - "Keeping up with the Babylonians: An endeavour to podcast"
Ryley Hill - "How to enjoy the outdoors during lockdown"
Dylan Gunn + Miti Isbasescu - "Making PPE in the EngPhys Lab"
Berend Zwartsenberg - "Covid and the Art of Motorcycle Maintentance"
Deborah Good - "Costume Engineering: recreating 18th century women's fashion"
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Event Time:
Thursday, May 14, 2020 | 2:00 pm - 3:00 pm
Event Location:
Zoom room
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2020-05-14T14:00:00
2020-05-14T15:00:00
Determining electron-phonon coupling using time- and angle-resolved photoemission spectroscopy
Event Information:
Abstract: Pump-probe spectroscopies have extended many well-established equilibrium techniques into the time domain. Among them, time-resolved ARPES is especially exciting, as it provides access to the electronic structure and many-body interactions on an ultrafast timescale. Despite its success, the applicability of TR-ARPES has been curtailed by the limited photon energy, resolution, and repetition rate of available laser sources, which generally confine experiments to the low-momentum, high-fluence regime. At UBC, we have developed a new cavity-based high-harmonic ultrafast laser source that enables detailed, low-fluence TR-ARPES studies over the full Brillouin zone of quantum materials.
We apply this source to the study of electron-phonon coupling on graphite, a well-studied test subject. While many experimental techniques are sensitive to electron-phonon coupling, the measured quantity is usually averaged over electron degrees of freedom or bosonic degrees of freedom. In contrast, we observe quantized energy-loss processes that correspond to the emission of strongly coupled optical phonons, which allow for the quantitative extraction of the mode-projected electron-phonon matrix element, for specific initial and final electron states.
The features that we observe come from the non-thermal occupation of electrons. In high-fluence experiments, electron dynamics are often described by the evolution of the temperature, which masks the underlying microscopic scattering processes that are rich with information. Using the study of graphite as a benchmark, we use numerical simulations to elucidate non-thermal regimes at high and flow fluences, and further highlight the need for detailed perturbative experiments to exploit non-equilibrium electron properties in materials.
Biosketch: MengXing Na is an experimental condensed matter physicist. she is currently a PhD student, studying in the group of Andrea Damascelli and David J. Jones. Her work focusses on electron-phonon coupling and electron dynamics, which she studies using a combination of time and angle-resolved photoelectron spectroscopy and numerical simulation.
Event Location:
Zoom room
Event Time:
Thursday, May 14, 2020 | 2:00 pm - 3:00 pm
Event Location:
Remote via Bluejeans
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2020-05-14T14:00:00
2020-05-14T15:00:00
Measuring Matter/Anti-matter Asymmetry in Neutrino Ocillations at T2K
Event Information:
In 1964, it was discovered that the charge-parity (CP) symmetry was violated in the weak interaction of quarks, with potential implications for the evolution of the universe. Since then, particle physics experiments have searched for new sources of CP violation. The discovery of neutrino oscillations and establishment of oscillations between three neutrino flavors by experiments, including T2K, has made clear the possibility of CP violation in neutrino oscillations. T2K, operating since 2009 with significant contributions from TRIUMF, has collected data with beams of muon neutrinos and muon (anti)neutrinos with the goal of constraining the parameter that governs the presence or lack of CP asymmetry in neutrino oscillations. I will present the measurement of this parameter by the T2K experiment and discuss the prospects for stronger constraints with future data from T2K and future experiments.
Event Location:
Remote via Bluejeans
Event Time:
Monday, May 11, 2020 | 3:00 pm - 4:00 pm
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2020-05-11T15:00:00
2020-05-11T16:00:00
Supernova Neutrinos, SN1987A, and the HALO neutrino detector in SNOLAB
Event Information:
The life of a massive star ends with the gravitational collapse of the iron core and the subsequent explosion of the star as a supernova. Already a spectacular object in optical telescopes, 99% of the energy is emitted in the form of neutrinos. Neutrinos give a prompt picture of the nuclear and particle processes in the bowels of the exploding star, unlike the optical radiation which is emitted hours after the core collapse. I will discuss a mystery of the neutrino signal from supernova 1987A, and the role of a lead-based neutrino detector in observing the neutrinos from the next galactic supernova.
Event Location:
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Event Time:
Thursday, May 7, 2020 | 4:00 pm - 5:00 pm
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2020-05-07T16:00:00
2020-05-07T17:00:00
The Life of Medical Isotopes at TRIUMF
Event Information:
From its inception, the Life Sciences division at TRIUMF has leveraged the laboratory’s extensive particle accelerator expertise and infrastructure to develop novel technologies that help understand life at the molecular level. The production of short-lived (half-life <2 hr) positron emitting isotopes (C-11, F-18, N-13, etc.) and corresponding radiopharmaceuticals has long provided a foundation for the division’s interdisciplinary science program. More recent efforts have focused on the collaborative development of novel F-18 chemistry and applications toward the synthesis of radiolabeled amino acids as novel imaging agents for cancer. We have developed novel methods to label unprotected, branched aliphatic amino acid in mild, aqueous conditions and have used this method to synthesize several amino acid transporter substrates. In particular, the potential of several L-[18F]fluoroleucine ([18F]FL) derivatives for tumor imaging will be discussed. We have also developed 5-[18F]-fluoroaminosuberic acid ([18F]FASu) which targets the cystine-glutamate antiporter (system xC-), which plays a key role in maintaining cellular redox balance, allowing our team to explore the use of PET to non-invasively monitor tumor response to therapy.
Beyond imaging, a global renaissance in the production and application of various therapeutic, alpha- (Ac-225, Bi-213, At-211), beta- (Lu-177, Y-90) and Auger- (Sb-119) emitting isotopes is underway; many of which are now entering clinical trials for the treatment of late-stage cancers. The second part of this seminar will provide an update on TRIUMF’s efforts related to the large-scale production of 225Ac (t1/2 = 9.9 d) by the irradiation of thorium metal with 480 MeV protons. This presentation will provide an update on our production efforts with a focus on a comparison of different product isolation methods and the synthesis and biodistribution of several targeted radiopharmaceuticals.
The seminar will conclude with a summary of emerging research programs and infrastructure at TRIUMF.
Event Location:
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Event Time:
Monday, May 4, 2020 | 3:00 pm - 4:00 pm
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2020-05-04T15:00:00
2020-05-04T16:00:00
Supernova Archaeology: Uncovering the origins of thermonuclear supernovae from clues in the ISM
Event Information:
Type Ia supernovae (SNe Ia) have proven vital to our understanding of cosmology, both as standard candles and for their role in the origin of the elements. They are now understood to arise from the thermonuclear explosion of a white dwarf, but why should a white dwarf explode? Evolutionary models can be grouped into either "accretion" or "merger" scenarios, with accretion models typically implying a hot, luminous phase prior to explosion. These objects are significant sources of ionizing radiation; therefore, the environment surrounding SN Ia progenitors should be strongly ionized, and traced by faint nebular emission. Such "relic" nebulae should extend out to 10 -- 100 parsecs and linger for roughly the recombination timescale in the ISM (∼100,000 years). In this talk, I'll show how the absence of a surrounding nebula excludes any accretion ("single-degenerate") channel for the origin of Tycho's supernova, as well as many other nearby remnants. Most variations on the merger ("double degenerate") scenario remain viable. I'll also show how a similar test can be applied to the integrated emission of old stellar populations, ruling out the textbook accretion scenario for delay times greater than 1 Gyr, before concluding with some recent results on the deeper connections between binary progenitors of some supernovae and the diffuse ionized gas of spiral galaxies.
Event Location:
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Event Time:
Thursday, April 30, 2020 | 4:00 pm - 5:00 pm
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2020-04-30T16:00:00
2020-04-30T17:00:00
Physics & Astronomy Show & Tell
Event Information:
What I did during lockdown.
* Douglas Scott "A train-spotter's guide to daily exercise"
* Mark van Raamsdonk "Diary of an epidemic: my family project on reporting of the Spanish Flu"
* Chris Waltham "Channelling my inner 13-year-old to stay sane: a model De Havilland Beaver in teak and maple"
* Philip Stamp "Dynamics of Coronavirus propagation"
* Theresa Liao "Phenomenal physics & astronomy at home"
* Gabriel Bottrill "Negative mass, a physical improbability?"
* Daniel Korchinski "Bounded in a nutshell: Real-time fractal exploration with my GPU"
Event Location:
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Event Time:
Monday, April 27, 2020 | 3:00 pm - 4:00 pm
Event Location:
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2020-04-27T15:00:00
2020-04-27T16:00:00
What the Sub-mm Variability of Embedded Protostars Tells Us about Accretion: Past, Present, and Future
Event Information:
After four years of monitoring deeply embedded protostars in the sub-mm, the JCMT Transient Survey has uncovered almost two dozen variable sources, corresponding to >30% of the brightest protostars. Period-fitting analyses find that a significant fraction of these protostars are associated with timescales of 3-8 years and fractional sub-mm amplitudes of 5-50%. We compare the strength of variability in the sub-mm with simultaneous observations at near-/mid-IR wavelengths for half our sample, revealing excellent light curve agreement. Expressed in magnitudes, the strength of the variability signal is found to be 4-6 times larger in the IR, confirming our expectation that the sub-mm emission is directly related to the changing dust temperature in the enveloping core, while the IR responds to the changing source luminosity.
Assuming that the observed changes in brightness are due to time-variable accretion onto the protostar, the measured timescales and amplitudes suggest that dynamic processes taking place within the inner, several AU, protostellar disk play a role in modulating the mass assembly of deeply embedded protostars. Furthermore, combining the observed time-varying SEDs of these sources with radiative transfer models and with high-resolution ALMA imaging yields discriminatory information for the envelope, disk, and outflow cavity, breaking some of the degeneracy found when fitting static SEDs. Finally, we use ancillary information on the evolutionary stages of protostars in Orion to compile a census of which sources are most likely to be varying.
Event Location:
Remote via zoom
Event Time:
Thursday, April 23, 2020 | 4:00 pm - 5:00 pm
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2020-04-23T16:00:00
2020-04-23T17:00:00
The Cosmic Web: concept, skeleton, connectivity
Event Information:
The observed distribution of matter and galaxies in the Universe is not random, but composed of clusters, connected by filaments and sheets. How do we understand the formation and evolution of these structures? I will review the concept of the Cosmic Web, which lies behind our understanding of the filamentary nature of the matter distribution at large scales - how it can be described geometrically, and some of its most basic properties, using simple mathematical modelling and physical analogies.
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Event Time:
Monday, April 20, 2020 | 3:00 pm - 4:00 pm
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2020-04-20T15:00:00
2020-04-20T16:00:00
Do Fullerenes solve the 100 year old Diffuse Interstellar Band mystery?
Event Information:
In 1919 Mary Lea Heger demonstrated that certain diffuse absorptions in reddened spectra were of interstellar origin. Many hundreds are now known. In 1988 Harry Kroto suggested soccer-ball carbon configurations – fullerenes – might well be the source. In 1994 Bernard Foing & Pascale Ehrenfreund predicted and found two diffuse interstellar bands near 1 μm caused by the Fullerene ion C60+ but these could not be confirmed in the lab. In 2016 John Maier and Ewen Campbell in Basel succeeded in producing credible lab profiles and found additional bands. David Bohlender and I detected the five strongest with ESPaDONs at CFHT and with GRACES. Both the lab and telescope detections presented major challenges, particularly from skeptics.
Event Location:
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Event Time:
Tuesday, April 14, 2020 | 12:30 pm - 3:30 pm
Event Location:
UBC’s Virtual Meeting Room (VMR)
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2020-04-14T12:30:00
2020-04-14T15:30:00
"Searching the Entirety of Kepler Data: New Exoplanets and Occurrence Rate Estimates”
Event Information:
Final PhD Oral Examination
Abstract:
First, I present the results of an independent search of all ~200,000 stars observed over the four-year Kepler mission for multi-planet systems, using a three-transit minimum detection criteria to search orbital periods up to hundreds of days. My search returned 17 new planet candidates, in addition to thousands of known Kepler Objects of Interest (KOIs), with a 98.8% recovery rate of already confirmed planets. I highlight the discovery of one candidate, KIC-7340288 b, that is both rocky (radius <1.6 R_Earth) and in the Habitable Zone (insolation between 0.25 and 2.5 times the Earth's insolation). Another candidate is an addition to the already known KOI-4509 system. I also present adaptive optics imaging follow up for 6 of my new planet candidates, 2 of which reveal a line-of-sight stellar companion within 4".
Using my independent Kepler planet catalogue, I then present exoplanet occurrence rates estimated with approximate Bayesian computing for planets with radii between 0.5 - 16 R_Earth and orbital periods between 0.78 - 400 days days, orbiting FGK dwarf stars. I characterize the efficiency of planet recovery by both my search and vetting pipelines using injection/recovery tests, and account for both planet radius uncertainty and the estimated false positive rate due to transit-like noise signals in the data. Marginalizing over the entire period-radius space, I find ~1 planet per FGK star. By analyzing my FGK occurrence rates as well as those computed after separating F, G, and K type stars, I explore dependencies on stellar effective temperature, planet radius, and orbital period.
Finally, I provide several estimates of the ``eta-Earth'' value --- the frequency of potentially habitable, rocky planets orbiting Sun-like stars. For planets with sizes 0.75 - 1.5 R_Earth orbiting in a conservatively defined Habitable Zone (0.99 - 1.70 AU) around G type stars, my reliability-incorporated calculations place an upper limit (84.1th percentile) of < 0.18 planets per star.
Event Location:
UBC’s Virtual Meeting Room (VMR)
Event Time:
Monday, April 6, 2020 | 3:00 pm - 4:00 pm
Event Location:
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2020-04-06T15:00:00
2020-04-06T16:00:00
Use and Pollution of Space: The Changing Earth Orbit Environment
Event Information:
Satellites play many essential roles, from communications and navigation to Earth imaging in support of agriculture, fishing, forestry, disaster relief, environmental science, surveillance and security. Yet satellites are threatened by their own increasing numbers, as well as an accumulation of debris such as leftover rockets, defunct satellites, and fragments from in-orbit breakups and collisions. These risks will soon increase: SpaceX has launched the first 180 of a planned 12,000 communications satellites, with a possible extension to 42,000, into low Earth orbit (LEO), while OneWeb and Telesat have secured funding for their own ‘mega-constellations’. Over the next decade, the number of satellites is expected to increase by an order of magnitude, from about 5,000 to about 50,000. Anti-satellite (ASAT) weapons, including one tested by India in 2019, can add further debris and thus destroy unintended targets. There are no international rules that specifically govern access to LEO, setting the stage for a ‘tragedy of the commons’. This talk will focus on the changing Earth Orbit environment, challenges facing its management, and some of the mitigation efforts that are underway.
Event Location:
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Event Time:
Monday, March 30, 2020 | 3:00 pm - 4:00 pm
Event Location:
Remote access (connect using Zoom)
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2020-03-30T15:00:00
2020-03-30T16:00:00
(1) Finding new pulsars using CHIME FRB & (2) Searching the entirety of Kepler data: New exoplanets
Event Information:
ABSTRACT 1: The Canadian Hydrogen Intensity Mapping Experiment was originally built to observe the hydrogen gas existing in the Universe, in order to measure the baryon acoustic oscillations. However, due to the nature of the telescope, it is also particularly effective at detecting transient events, such as the relatively new phenomenon, fast radio bursts (FRBs). Fortuitously, it turns out that the very distant FRBs have characteristics similar to those of some nearby pulsars. The CHIME FRB backend is extremely good at detecting particular kinds of pulsars, which show strong one-off bursts, and thus we preferentially find rotating radio transients (RRATs) and also giant pulse emitters. I will present a machine-learning approach to find pulsars within the huge CHIME FRB archive and then describe our follow up procedure with the CHIME pulsar backend.
ABSTRACT 2: The discovery of thousands of planets outside of the Solar System over the past decade has revolutionized our understanding of planet diversity. Furthermore, by performing statistical analysis on the census of discovered planets, information about planet formation and evolution can be uncovered. In this talk, I share how my work makes contributions on both fronts. First, I present my own planet search of all ~200,000 stars observed by the original Kepler mission. In addition to the re-discovery of thousands of known planets, I found 17 new planet candidates, including a small candidate in the Habitable Zone - where liquid water could potentially exist on a rocky planet's surface. Then, I analyze my search results to calculate the abundance of different kinds of planets, and explore what this can tell us about current theories. I estimate that there are less than 0.2 potentially habitable planets per Sun-like star. Determining this is one of the major goals of astronomy, with implications
for the search for life and influence on the design of future exoplanet-finding missions.
Event Location:
Remote access (connect using Zoom)
Event Time:
Friday, March 27, 2020 | 3:15 pm - 5:15 pm
Event Location:
Virtual Defence via Zoom
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2020-03-27T15:15:00
2020-03-27T17:15:00
“Brain network pattern analysis with Positron Emission Tomography data: application to Parkinson’s disease”
Event Information:
DEPARTMENTAL DOCTORAL ORAL EXAMINATION
Abstract:
Positron Emission Tomography (PET) is commonly used to investigate changes within the brain due to aging and disease. Because our brain works as an integrated system where multiple brain regions work together to perform complex tasks, net- work pattern analyses (a subset of machine-learning methods) were often found to provide complementary, more sensitive and more robust information compared to traditional univariate analyses, especially in the field of Magnetic Resonance Imaging (MRI). However, network pattern analysis has not been commonly used to study neurotransmitter changes using PET data. In addition, the emerging of multi-tracer imaging studies highlights the needs to develop novel joint analysis methods to ex- tract and combine complementary information from each imaging dataset to obtain a complete picture of the complex brain states. This thesis would be one of the first applications of such methods in the PET field.
Parkinsons disease (PD) is the second most common neurodegenerative disor- der with a long prodromal stage, and non-motor symptoms occur alongside or even before motor symptoms. Initially deemed to affect predominantly the dopamin- ergic system, PD is now deemed associated with alterations in several other non- dopaminergic neurotransmitter systems. Such changes, specific to PD, are some- times difficult to detect, especially in prodromal and early stages of the disease; the interactions between different disease-related mechanisms also remain largely unclear. In addition, the disease origin is unknown and there is current no effective cure for PD.
In this thesis work, we 1) explored spatial connectivity changes in the serotoner- gic system that are sensitive for detecting subtle changes in the prodromal and early disease stages and provide new insights into the mechanism of PD; 2) introduced Dynamic Mode Decomposition to extract spatio-temporal patterns of dopaminergic denervation for modeling disease progression; 3) introduced a novel joint pattern analysis approach to extract complementary information in the dopaminergic and serotonergic systems and their relationships with treatment response and treatment-induced complications. These novel methods not only lead to new understanding of PD, but also provided more sensitive tools for the analysis of PET data in a variety of clinical applications.
Event Location:
Virtual Defence via Zoom
Event Time:
Tuesday, March 24, 2020 | 9:00 am - 11:00 am
Event Location:
Virtual Defence - UBC’s Virtual Meeting Room (VMR)
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2020-03-24T09:00:00
2020-03-24T11:00:00
"Gradient and Spin Echo Magnetic Resonance Imaging for the Characterization of Myelin Health in Multiple Sclerosis"
Event Information:
Final Doctoral Oral Examination
Abstract:
Multiple sclerosis (MS) is a pathologically complex, autoimmune disease that results in demyelination and neurodegeneration following an inflammatory-mediated event cascade. Magnetic resonance imaging (MRI) has been essential to study MS and is now a cornerstone of MS diagnosis and clinical decision making. However, typical clinical MRIs fail to capture the complexity of the disease, because they lack specificity to myelin and other pathological mechanisms influencing myelin health in MS.
In this thesis, I probed two quantitative MRI techniques for their potential to study myelin health in MS. First, myelin water imaging was tested for its specificity to myelin lipids, proteins and iron stored in myelin. I explored tissue class specific variations and demonstrated to-date unknown sensitivity of myelin water imaging to the presence of minimal myelin concentrations. In brain tissue samples, I identified MS lesion changes that are linked to late stage remyelination. Following this work, I investigated the accuracy of myelin water imaging and its potential application at ultra-high magnetic fields. Using signal simulations, I first described the dependence of the non-negative least squares signal analysis on processing and tissue parameters. The simulations showed that myelin underestimations due to B1+-inhomogeneities and noise can be minimized by adjusting the T2 range in accordance with the acquisition echo time. To translate myelin water imaging to 7T, I studied the T2 properties in seven healthy subjects in comparison to 3T data. I demonstrated the feasibility of myelin water imaging at 7T and discussed the challenges that need to be addressed to overcome current limitations in measuring short T2 signal at 7T.
The susceptibility-sensitive MR data that were explored in the next chapters provide greater sensitivity, albeit possibly less specificity to myelin, than myelin water imaging. Using the phase component of the susceptibility-sensitive data, I disproved that the contrast of MS lesions is driven by iron accumulation. In simulations and with post-mortem data, I demonstrated that the combined degree of iron and myelin loss determines the lesions’ MRI appearance. Following this histopathological validation, I studied new, acute lesions in eleven MS patients over five years in order to discern the pathological underpinnings of the signal changes and the techniques potential as a marker of tissue damage and repair. Current models and their shortcomings are discussed.
Finally, I discussed two technical developments to enhance current MS imaging methods. First a multi-dynamic, high-spatial resolution susceptibility-sensitive imaging approach is described for visualizing the central vein sign. Using phantom and in vivo data, I demonstrated the qualitative and quantitative agreement of the proposed approach with other imaging strategies. Secondly, FLAIR2 is introduced, a novel image contrast that was developed to provide improved contrast-to-noise, while shortening overall scan time. The potential of FLAIR2 to aid automated lesion segmentation was subsequently demonstrated on real-world multi-center clinical data.
Event Location:
Virtual Defence - UBC’s Virtual Meeting Room (VMR)
Event Time:
Thursday, March 19, 2020 | 4:00 pm - 5:00 pm
Event Location:
online - see event information for link
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2020-03-19T16:00:00
2020-03-19T17:00:00
Real-time modelling of the 2020 coronavirus epidemic (online)
Event Information:
I will talk about mathematical modelling reports from around the world for the emerging novel coronavirus epidemic. I will explain the mathematical methods, findings and potential significance. I will also try to link these reports to events in BC. This will be a significantly updated version of the talk I gave on January 31 in the Mathematics Department.
* Please note that this talk is not open to the public; online streaming is available at 4pm at
https://mediasite.audiovisual.ubc.ca/Mediasite/Play/0f5e2f7d0b834b55b0fb01c6a5e8582b1d
Event Location:
online - see event information for link
Event Time:
Thursday, March 12, 2020 | 4:00 pm - 5:00 pm
Event Location:
Hennings 201
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2020-03-12T16:00:00
2020-03-12T17:00:00
Is there any science in science-fiction movies?
Event Information:
Most of us have favourite science-fiction films - and usually we're happy to turn our scientist brains off when we watch them! But there's actually some interesting physics buried in there. I will focus on space-based movies and ask what they have to say about three things: (1) Space is big; (2) Space is curved; and (3) Space is expanding. Can you guess what movies will be used to illustrate these ideas?
Event Location:
Hennings 201
Event Time:
Thursday, March 12, 2020 | 2:00 pm - 3:00 pm
Event Location:
TRIUMF Auditorium
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2020-03-12T14:00:00
2020-03-12T15:00:00
Searches for dark matter and new physics with GAMBIT
Event Information:
I will give an introduction to GAMBIT, the Global and Modular Beyond-the-Standard Inference Tool, focusing on the Beyond-the-Standard-Model science programme currently being pursued with it. This includes indirect searches for dark matter with gamma-rays and neutrinos, direct searches with a range of underground experiments, cosmological constraints, associated searches for new particles at the LHC and in flavour experiments, and precision tests of the Standard Model. I will present the latest combined constraints on a range of different models for new physics, ranging from Higgs-portal dark matter to axions and supersymmetry, as well as previewing a few GAMBIT extensions and results for other models on the near horizon.
Event Location:
TRIUMF Auditorium