BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//UM//UM*Events//EN
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:America/Detroit
TZURL:http://tzurl.org/zoneinfo/America/Detroit
X-LIC-LOCATION:America/Detroit
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20070311T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20071104T020000
RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20200127T084427
DTSTART;TZID=America/Detroit:20200129T120000
DTEND;TZID=America/Detroit:20200129T130000
SUMMARY:Workshop / Seminar:Carbon Mineralization in Fractured Basalt
DESCRIPTION:The need to meet rising energy demands while mitigating climate change driven by associated CO2 emissions has motivated the development of geologic carbon storage systems. Until recently\, most research focused on sedimentary reservoirs that rely primarily on short-term solubility and physical trapping mechanisms\, where CO2 can migrate if structural security is compromised. This inherent leakage risk could be eliminated by leveraging the natural reactivity of basalt reservoirs\, which are abundant in silicate minerals that dissolve rapidly under acidic conditions and can ultimately trap dissolved CO2 as solid carbonate minerals. However\, our fundamental understanding of the conditions under which CO2 mineralization occurs and its viability as a permanent carbon sequestration pathway remain limited. This talk will highlight series of high-pressure core flooding experiments and complementary reactive transport modeling designed to evaluate the effects of temperature\, fluid chemistry\, and transport regimes on basalt dissolution and carbonate precipitation. Results indicate that basalts can effectively mineralize CO2 at representative subsurface stress conditions\, but predominantly within buffered diffusion-limited zones (e.g. dead-end fractures) where reaction fronts developed from competing geochemical gradients. Carbonate precipitation was highly localized on reactive silicate minerals contributing key divalent cations and was significantly enhanced by elevated temperature and alkalinity. In combination\, this work reveals how complex interactions between reservoir geochemistry and transport conditions drive the extent and spatial distribution of carbon mineralization reactions in basalt fractures\, which will inform selection of storage sites and injection.\n\nAnne Menefee in a PhD candidate in the Civil and Environmental Engineering Department at the University of Michigan. Anne received her B.S.E. in Environmental Engineering from the University of Viginia. Her reserach is focused on improving our knowledge of fluid transport and geochemical controls for enhancing CO2 mineral carbonation in fractured basalt reservoirs.
UID:70027-17497483@events.umich.edu
URL:https://events.umich.edu/event/70027
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Civil and Environmental Engineering,Earth Day At 50,Energy,Engineering,Graduate and Professional Students,Graduate Students,Michigan Engineering,Undergraduate Students
LOCATION:GG Brown Laboratory - 2505
CONTACT:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20200130T141130
DTSTART;TZID=America/Detroit:20200129T120000
DTEND;TZID=America/Detroit:20200129T130000
SUMMARY:Lecture / Discussion:HET Brown Bag | Statistical inference of dark matter substructure with weak and strong gravitational lensing
DESCRIPTION:Dark matter structures are expected to exist over a large range of scales\, and their properties and distribution can strongly correlate with the underlying particle physics. In this talk\, I will describe two separate methods to statistically infer the properties of dark matter substructure using (astrometric)-weak and strong lensing observations\, respectively. In the first part of the talk\, I will describe how the motion of subhalos in the Milky Way induces a correlated pattern of motions in background celestial objects---known as astrometric weak lensing---and how global signatures of these correlations can be measured using the vector spherical harmonic decomposition formalism. These measurement can be used to statistically infer the nature of substructure\, and I will show how this can be practically achieved with future astrometric surveys and/or radio telescopes such as WFIRST and the Square Kilometer Array. Next\, I will describe a novel method to disentangle the collective imprint of dark matter substructure on extended arcs in galaxy-galaxy strong lensing systems using likelihood-free (or simulation-based) inference techniques. This method uses neural networks to directly estimate the likelihood ratios associated with population-level parameters characterizing substructure within lensing systems. I will show how this method can provide an efficient and principled way to mine the large sample of strong lenses that will be imaged by future surveys like LSST and Euclid to look for signatures of dark matter substructure. I will emphasize how the statistical inference of substructure using these techniques can be used to stress-test the Cold Dark Matter paradigm and probe alternative scenarios such as scalar field dark matter and enhanced primordial fluctuations.
UID:71096-17777057@events.umich.edu
URL:https://events.umich.edu/event/71096
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Brown Bag Seminar,physics,science
LOCATION:Randall Laboratory - 3481
CONTACT:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20200115T125712
DTSTART;TZID=America/Detroit:20200129T120000
DTEND;TZID=America/Detroit:20200129T130000
SUMMARY:Presentation:II Event. Fulbright 2021-2022 Kick Off: Brown Bag Info Session
DESCRIPTION:Join us for the first Fulbright Info Session in 2020! Come learn about the largest international exchange program for U.S. citizens\, offering funding for study\, research\, and teaching in over 140 countries. No matter your area of study\, no matter your academic level\, now is the BEST time to learn more about the Fulbright Program and the upcoming competition.\n\nHeather Johnson\, U-M Fulbright Program Adviser\, will introduce you to the 2021-2022 Fulbright U.S. Student Program competition. Heather has worked with Fulbright for over ten years and will give an overview of the U-M Fulbright campus process\, which has made U-M a leading public university in Fulbright awardees. We have worked to make our application process accessible for every U-M student\, and Heather's presentation will get you started!\n\nFaculty and staff are also invited to this event. Our ability to support students in their applications to Fulbright hinges on the wisdom and experience of U-M's professors\, advisers\, and U-M Fulbright Alumni. \n\nIf you would like more information on how to support our Fulbright Applicants for the 2021-2022 cycle\, be sure to join us! We hope to see you there!
UID:71500-17836311@events.umich.edu
URL:https://events.umich.edu/event/71500
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Fulbright,Funding Opportunities,Info Session,International,Presentation,Scholarship
LOCATION:Weiser Hall - Suite 1010, 10th Floor
CONTACT:
END:VEVENT
END:VCALENDAR