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DTSTART;TZID=America/New_York:20210519T150000
DTEND;TZID=America/New_York:20210519T170000
DTSTAMP:20260407T073840
CREATED:20210517T164719Z
LAST-MODIFIED:20210517T164719Z
UID:10006786-1621436400-1621443600@seasevents.nmsdev7.com
SUMMARY:CBE PhD Dissertation Defense | Understanding the Dynamic and Mechanical Properties of Polymer under Nanoconfiements
DESCRIPTION:Abstract: \nThe dynamic properties of glassy polymers are well-known to change up confinement to the nanoscale. Confinement to free-standing thin films leads to an enhancement in the segmental dynamics\, and changes in the chain conformation lead to changes in the entanglement density in confined polymers. In this study\, we investigate the role of both segmental dynamics and changes in entanglement density on the mechanical response of glassy polymer films under uniaxial tension using molecular dynamics (MD) simulations. We find that entanglements near the chain ends are unable to carry significant stress at large deformation\, and this leads to the development of a simple model to describe the number of effective entanglements per chain as a function of the blending ratio. We find an exponential scaling between the film toughness and number of effective entanglements per chain\, which also agrees well with the trends observed in experimental measurements of film strength. Varying the film thickness uncovers competing effects between the reduction in entanglement density and changes in the segmental dynamics. In well-ordered diblock copolymer thin films\, we find that failure tends to occur near the center of the block copolymer domains due to the high concentration of chain ends that are unable to support significant stress. Our studies of the thin film mechanics provide molecular insight into how segmental mobility and entanglements interplay with position and morphology to control the mechanics of thin polymer films.
URL:https://seasevents.nmsdev7.com/event/cbe-phd-dissertation-defense-understanding-the-dynamic-and-mechanical-properties-of-polymer-under-nanoconfiements/
LOCATION:Zoom – Email CBE for link
CATEGORIES:Doctoral,Graduate,Dissertation or Thesis Defense
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210601T103000
DTEND;TZID=America/New_York:20210601T120000
DTSTAMP:20260407T073840
CREATED:20210525T212755Z
LAST-MODIFIED:20210525T212755Z
UID:10006798-1622543400-1622548800@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Surface and Interface Engineering in Manipulation and Fabrication of Colloid-Based Sub-Microporous Hierarchical Materials and Their Applications"
DESCRIPTION:Micro- and nano-porous hierarchical materials exhibit extraordinary mechanical\, energy conversion\, and optical properties\, but manufacturing challenges prevent them from being fabricated at cm-length scales or larger while maintaining the dense regular nm features that enhance their properties. Using self-assembled particles as a template to fabricate metallic hierarchical structures is promising to overcome these challenges\, but current fabrication approaches are significantly limited by the cracking problem in the assembled templates. This work focuses on understanding cracking mechanisms in particle templates and developing a crack-free self-assembly approach to fabricate cm-scale porous nickel hierarchical structures with sub-micrometer feature sizes and an ultrahigh tensile strength. The key to eliminating cracks in the assembled template is to manipulate the surface and interface properties of particles and substrates. The resulting nickel hierarchical structures have 30 nm grains\, 100 nm features\, and 260 MPa tensile strengths\, which are 3X the strength of all porous metals at the same relative density\, approach the theoretical strength limit for porous nickel\, and are 10X the strength of prior nanolattices. Besides\, a new way of controlling internal pore size of the resulting structures has been demonstrated by taking advantage of liquid bridging between particles. The fundamental insights and fabrication methods developed in this work further enable applications\, such as immunomagnetic separation of exosomes and mechanochromic sensing.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-surface-and-interface-engineering-in-manipulation-and-fabrication-of-colloid-based-sub-microporous-hierarchical-materials-and-their-applications/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210602T100000
DTEND;TZID=America/New_York:20210602T120000
DTSTAMP:20260407T073840
CREATED:20210517T170135Z
LAST-MODIFIED:20210517T170135Z
UID:10006787-1622628000-1622635200@seasevents.nmsdev7.com
SUMMARY:CBE PhD Dissertation Defense |  Designing MXene Catalysts for Clean Energy Chemistries using High-Throughput First-Principles Calculations and Data-Driven Methods
DESCRIPTION:Abstract: \nThe field of heterogeneous catalysis has been prompted to shift toward designing catalysts that can perform beneficial chemistries at ambient conditions. Such materials should have high activity and stability and avoid issues prevalent in other traditional catalysts that are not earth-abundant\, chemically efficient\, or with high selectivity to carry out these reactions. In this thesis\, we study a new class of materials called 2D MXenes that have intriguing electronic and surficial properties. As a result\, MXenes have been of interest for catalysis applications. However\, previous literature on the theoretical exploration of MXenes as HER and NRR catalysts has modeled the basal plane functionalization to be pristine. To counter this\, we model MXenes with different functional groups that demonstrate the extreme reactivity of the basal planes. However\, just altering the basal plane functionalization does not encapsulate the tunability of MXenes for improving their catalytic activity. \nTherefore\, we study the effect of physicochemical changes to MXenes as catalysts for the electrochemical HER and NRR. We perform density functional theory calculations to predict the material properties and their interactions with H* and NxHy* intermediates. Such changes include altering chemical structure\, doping\, straining\, supporting\, and modifying functionalization. We find that of all these changes\, functionalization has the greatest impact on adsorption energies and hence the NRR/HER activity. The sulfidation and biaxial straining of MXenes also increased the HER activity of terminated MXenes. We then compile all data and design a machine learning study where we featurize the data to predict the adsorption energies for these coupled reactions. Electronic structure features of the terminations on the basal plane show that sulfidation of MXenes improves NRR thermodynamics. This thesis pushes forward the catalysis field by elucidating the effect of tuning 2D materials to enhance their chemical activity and the usefulness of data analytics and machine learning to assist materials discovery of novel catalysts for the future clean energy economy.
URL:https://seasevents.nmsdev7.com/event/cbe-phd-dissertation-defense-designing-mxene-catalysts-for-clean-energy-chemistries-using-high-throughput-first-principles-calculations-and-data-driven-methods/
LOCATION:Zoom – Email CBE for link
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210607T120000
DTEND;TZID=America/New_York:20210607T130000
DTSTAMP:20260407T073840
CREATED:20210520T131739Z
LAST-MODIFIED:20210520T131739Z
UID:10006788-1623067200-1623070800@seasevents.nmsdev7.com
SUMMARY:PSOC Webinar: Amanpreet Kaur & Yogesh Goyal
DESCRIPTION:Join Zoom Meeting: \nhttps://upenn.zoom.us/j/99334915941?pwd=eDRXV1lITDlySXFyRHUyUzdmRldoQT09 \nMeeting ID: 993 3491 5941 \nPasscode: 189247 \nPSOC@Penn Summer Webinars 2021 \nContact manu@seas.upenn.edu with any questions \nAmanpreet Kaur 12:00-12:30 PM \nYogesh Goyal: 12:30-1:00 PM
URL:https://seasevents.nmsdev7.com/event/psoc-webinar-amanpreet-kaur-yogesh-goyal/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Seminar,Postdoctoral
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210608T103000
DTEND;TZID=America/New_York:20210608T120000
DTSTAMP:20260407T073840
CREATED:20210531T161502Z
LAST-MODIFIED:20210531T161502Z
UID:10006799-1623148200-1623153600@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Room-Temperature Electrochemical Healing of Structural Metals"
DESCRIPTION:Many biological materials and organisms\, such as bones and mollusks\, possess the capability to heal and repair fractures at room temperature or at low homeostatic temperatures (∼ 20 ◦C – 40 ◦C). While this healing capability has inspired many advances in room-temperature self-healing polymers\, metals have proven more difficult to heal at room temperature due to the very slow transport rates of metal atoms. This talk showcases a new rapid\, effective\, low-energy\, and room-temperature approach to heal structural metals using nickel electrodeposition while mimicking the transport-mediated healing of bone. A polymer coating on the structural metal enables selective healing only at the fracture site\, while electrochemical reactions transport nickel ions from a nickel source to fractured areas. Using this approach\, cellular nickel fractured by either tension or scission is shown to recover 100% of its tensile strength in as little as 10 and 4 hours of healing\, while consuming several orders of magnitude less energy than many previously reported metal healing techniques. This approach is extended to the healing of low-carbon steel\, a widely used structural metal\, while elucidating the effect of ion transport and electrolyte chemistry on morphology and strength in fractured steel repaired with nickel electrodeposition. This work opens the possibility of healing a variety of structural metals using selective electrodeposition. With its low energy and time requirements\, as well as its effective recovery of strength\, electrochemical healing can be used to extend the service life of structural parts\, repair alloys vulnerable to thermal cracking\, and more efficiently employ scarce resources in energy-constrained systems or in remote environments.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-room-temperature-electrochemical-healing-of-structural-metals/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210608T103000
DTEND;TZID=America/New_York:20210608T123000
DTSTAMP:20260407T073840
CREATED:20210513T171612Z
LAST-MODIFIED:20210513T171612Z
UID:10006785-1623148200-1623155400@seasevents.nmsdev7.com
SUMMARY:BE Doctoral Dissertation: "Using Machine Learning and Natural Language Processing to Improve Scientific Processes"
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania and Dr. Konrad Kording are pleased to announce the Doctoral Dissertation Defense of Titipat Achakulvisut.\n\nUsing Machine Learning and Natural Language Processing to improve scientific processes\nScientific information has been growing exponentially over the past decades. Arguably\, traditional processes of doing science cannot keep up with this growth. This expansion has a scaling impact on scientific activities such as funding\, the review process\, conferences\, and exploring the literature. To improve on the traditional scientific processes\, useful tools and understanding of these processes are crucial. This dissertation advances the scientific processes by incorporating knowledge and tools from natural language processing (NLP) and machine learning (ML). We discuss the applications in three applications of scientific endeavors including (1) extracting scientific claims for scientific literature\, (2) improving on traditional conferences with data-driven approaches\, and (3) understanding the funding process using the content of applications. To complement our findings\, we provided open-source software\, tools\, and real-world implementation for other researchers. In sum\, this thesis serves as both a conceptual point of view and proof-of-concept implementations of how we can improve science through the use of ML and NLP.\n\nThe public is welcome to attend.\n\nPlease join Zoom Meeting\nhttps://upenn.zoom.us/j/93750249969?pwd=ekNLaHh2THUzcFlHanRYUEVnUVRJdz09\nMeeting ID: 937 5024 9969\nPasscode: 224865
URL:https://seasevents.nmsdev7.com/event/be-doctoral-dissertation-using-machine-learning-and-natural-language-processing-to-improve-scientific-processes/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Doctoral,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210609T203000
DTEND;TZID=America/New_York:20210609T220000
DTSTAMP:20260407T073840
CREATED:20210603T153115Z
LAST-MODIFIED:20210603T153115Z
UID:10006801-1623270600-1623276000@seasevents.nmsdev7.com
SUMMARY:ODEI Spotlight: Pride "Walk-In" Movie Night
DESCRIPTION:Pride “Walk-In” Movie Night\nWednesday\, June 9th | 8:30 pm (ET)\nLGBT Center (3907 Spruce St.) Back Patio \nWhat better way to kick-off Pride Month than with a movie night! Join the Penn LGBT Center for an intimate outdoor screening of the Oscar Award winning movie Moonlight. Bring a blanket and/or lawn chair for your seating and we’ll provide the feedings! Movie snacks and drinks will be provided. See you for a pride night under the moonlight!
URL:https://seasevents.nmsdev7.com/event/odei-spotlight-pride-walk-in-movie-night/
LOCATION:LGBT Center – 3907 Spruce Street\, 3907 Spruce Street\, Philadelphia\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210610T090000
DTEND;TZID=America/New_York:20210610T110000
DTSTAMP:20260407T073840
CREATED:20210608T172927Z
LAST-MODIFIED:20210608T172927Z
UID:10006805-1623315600-1623322800@seasevents.nmsdev7.com
SUMMARY:CBE PhD Dissertation Defense | Understanding and Predicting the Chemical Properties of Complex Oxides using First-principles Methods
DESCRIPTION:Abstract: \nTransition metal oxides are at the forefront of several applications in catalysis\, energy conversion and storage\, and are bound to play a pivotal role in our transition to a sustainable energy future. However\, vast differences in the electronic structure among different transition metal oxides make them highly complex materials to understand and predict chemical properties for a given application. The results of this thesis aims at providing some insights into bettering our understanding of these complex oxides through a first-principles approach\, and also provides paths to improve the predictability of chemical properties as it pertains to heterogeneous catalysis. Through the extensive use of density-functional theory calculations\, a detailed analysis of the electronic structure\, and ab-initio molecular dynamics coupled with enhanced sampling methods\, this thesis aims at better understanding perovskite and rutile oxides for their applications as electrocatalysts in water-splitting and as catalyst supports in thermal catalytic applications.
URL:https://seasevents.nmsdev7.com/event/cbe-phd-dissertation-defense-understanding-and-predicting-the-chemical-properties-of-complex-oxides-using-first-principles-methods/
LOCATION:Zoom – Email CBE for link
CATEGORIES:Doctoral,Graduate,Dissertation or Thesis Defense
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210614T120000
DTEND;TZID=America/New_York:20210614T123000
DTSTAMP:20260407T073840
CREATED:20210520T132131Z
LAST-MODIFIED:20210520T132131Z
UID:10006789-1623672000-1623673800@seasevents.nmsdev7.com
SUMMARY:PSOC Webinar: Larry Dooling
DESCRIPTION:Join Zoom Meeting: \n\n\n\n\nhttps://upenn.zoom.us/j/99334915941?pwd=eDRXV1lITDlySXFyRHUyUzdmRldoQT09 \nMeeting ID: 993 3491 5941 \nPasscode: 189247 \nPSOC@Penn Summer Webinars 2021 \nContact manu@seas.upenn.edu with any questions
URL:https://seasevents.nmsdev7.com/event/psoc-webinar-larry-dooling/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Seminar,Postdoctoral
ORGANIZER;CN="PSOC":MAILTO:manu@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210615T103000
DTEND;TZID=America/New_York:20210615T120000
DTSTAMP:20260407T073840
CREATED:20210602T124426Z
LAST-MODIFIED:20210602T124426Z
UID:10006800-1623753000-1623758400@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Mechanical Properties of Fibrous Network Materials"
DESCRIPTION:Fibrous network materials are ubiquitous both in nature and in synthetic materials\, and therefore it is important to understand the general properties of the materials and the physics and microstructures on which those properties depend. Specifically\, since fibrous networks generally perform a structural function\, their mechanical properties are of critical importance. We discuss here certain mechanical properties of specific fibrous network materials\, including compression of pulmonary emboli and fracture of Whatman filter paper. \nThe first fibrous network material we consider is pulmonary emboli\, which consist of a random network of fibrin fibers with pores filled with red blood cells (RBCs). We measure the stress-strain responses of human pulmonary emboli under cyclic compression which causes irreversible changes in the structure of the emboli. We describe the hysteretic response of emboli using a model of phase transitions in which the compressed embolus is segregated into coexisting rarefied and densified phases whose fractions change during compression. Our model takes into account the rupture of RBCs in the compressed emboli and stresses due to fluid flow through the emboli’s small pores. \nThe second fibrous network material we consider is Whatman filter paper\, which consists of a network of cellulose fibers that typically interact through hydrogen bonding. The effect of humidity on the out-of-plane fracture toughness of Whatman filter paper is studied for a broad range of relative humidities using double cantilever beam (DCB) tests. Cohesive zone modeling and finite element simulations are used to model crack propagation in the cellulose network. We find that the force-displacement curves from the DCB experiments cannot be explained by a single cohesive zone model\, so a novel model is developed which can capture the high peak and sudden drop in the force in the experimental data due to an initiation region. This new model agrees well with experimental data.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-mechanical-properties-of-fibrous-network-materials/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210616T140000
DTEND;TZID=America/New_York:20210616T150000
DTSTAMP:20260407T073840
CREATED:20210603T153207Z
LAST-MODIFIED:20210603T153207Z
UID:10006802-1623852000-1623855600@seasevents.nmsdev7.com
SUMMARY:ODEI Spotlight: Dance Outside w/ Pride
DESCRIPTION:Dance Outside w/ Pride\nWednesday\, June 16th | 2 – 3 pm (ET)\nIn-Person Location: LGBT Center (3907 Spruce St.)\nZoom ID: 954 3599 6859\nhttps://vpul-upenn.zoom.us/j/95435996859?pwd=U0wvU3NURHNRRXN4aHVUOER2VVg3QT09Join the Penn LGBT Center for a prideful celebration as we host our first ever hybrid dance class. Whether in-person or online you’re sure to GET YOUR LIFE with Philadelphia’s very own choreographer extraordinaire Devon Sinclair (@CHOREATOR)! With space for movers and dancers of all levels\, bring a friend and your best pride attire to sweat it all out in honor of Pride Month. We hope to see you there!
URL:https://seasevents.nmsdev7.com/event/odei-spotlight-dance-outside-w-pride/
LOCATION:LGBT Center – 3907 Spruce Street\, 3907 Spruce Street\, Philadelphia\, United States
CATEGORIES:Diversity, Equity and Inclusion
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210618T110000
DTEND;TZID=America/New_York:20210618T120000
DTSTAMP:20260407T073840
CREATED:20210609T135709Z
LAST-MODIFIED:20210609T135709Z
UID:10006807-1624014000-1624017600@seasevents.nmsdev7.com
SUMMARY:Bioengineering Juneteenth Town Hall
DESCRIPTION:Join the Department of Bioengineering for a Juneteenth address and Town Hall meeting. Dr. Ololade Fatunmbi\, a member of the BE advisory board\, will speak about HBCU partnerships. The address will be followed by a Q&A. This event is open to the entire Penn Bioengineering community. \nZoom Link
URL:https://seasevents.nmsdev7.com/event/bioengineering-juneteenth-town-hall/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Meeting,Alumni,Diversity, Equity and Inclusion
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210618T120000
DTEND;TZID=America/New_York:20210618T130000
DTSTAMP:20260407T073840
CREATED:20210609T133040Z
LAST-MODIFIED:20210609T133040Z
UID:10006806-1624017600-1624021200@seasevents.nmsdev7.com
SUMMARY:ODEI Spotlight: Penn Commemorates Juneteenth
DESCRIPTION:Friday\, June 18\, 2021\n12:00 PM – 1:00 PM \n\n\nTo learn more about Dr. Ibram X. Kendi\, please visit: www.ibramxkendi.com \nThis event is co-sponsored by The African-American Resource Center\, the Department of Africana Studies\, the Division of Human Resources\, Makuu\, the Office of Social Equity and Community\, and the Vice Provost for University Life. \n\nRegister Here!
URL:https://seasevents.nmsdev7.com/event/odei-spotlight-penn-commemorates-juneteenth/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210621T120000
DTEND;TZID=America/New_York:20210621T123000
DTSTAMP:20260407T073840
CREATED:20210520T132454Z
LAST-MODIFIED:20210520T132454Z
UID:10006790-1624276800-1624278600@seasevents.nmsdev7.com
SUMMARY:PSOC Webinar: Manasvita Vashisth & Mengdi Tao
DESCRIPTION:Join Zoom Meeting: \nhttps://upenn.zoom.us/j/99334915941?pwd=eDRXV1lITDlySXFyRHUyUzdmRldoQT09 \nMeeting ID: 993 3491 5941 \nPasscode: 189247 \nPSOC@Penn Summer Webinars 2021 \nContact manu@seas.upenn.edu with any questions \nManasvita Vashisth 12:00-12:30 PM \nMengdi Tao 12:30-1:00 PM
URL:https://seasevents.nmsdev7.com/event/psoc-webinar-manasvita-vashisth/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Seminar,Doctoral,Graduate,Student
ORGANIZER;CN="PSOC":MAILTO:manu@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210622T103000
DTEND;TZID=America/New_York:20210622T120000
DTSTAMP:20260407T073840
CREATED:20210614T173046Z
LAST-MODIFIED:20210614T173046Z
UID:10006808-1624357800-1624363200@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Dynamic Response of Resonant Metamaterials and Other Composites"
DESCRIPTION:Composite materials under dynamic loading exhibit interesting emergent phenomena. Most notably are phononic crystals and metamaterials which can possess frequency dependent and negative elastic moduli and density. In general\, the constitutive response is non-local in space and time and depends on both the strain and velocity. Additionally\, scattering and local resonance effects can lead to frequency band gaps where no waves may propagate. Advanced manufacturing techniques allow us to produce these composites with intricate microstructures. At the same time\, these processes may be costly and prototyping many designs physically may be cost prohibitive. It is then natural to turn towards modeling in order to more efficiently design and characterize such materials. These modelling efforts may include direct numerical simulations\, but even then this may be computationally infeasible for composites whose microstructure is much smaller than the macroscopic length scales in which it will be operating. In these cases\, we seek to describe the effective behavior of the material under static or dynamic loading. \nThe work discussed in this talk is situated towards modeling of resonant metamaterials and other composites under dynamic loading. Direct numerical simulations are used to explore the wave propagation behavior of simple and hierarchical resonant metamaterials made of soft polydimethylsiloxane rubber (PDMS) and removable steel insets. The role of several physical features on the transmission loss (TL) curve is assessed in detail numerically and compared to the experimental TL data. Beyond this\, we develop a novel dynamic homogenization framework using one- and two-point statistics that provide estimates of the dynamic response of composites with reduced computational cost.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-dynamic-response-of-resonant-metamaterials-and-other-composites/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210623T163000
DTEND;TZID=America/New_York:20210623T180000
DTSTAMP:20260407T073840
CREATED:20210603T153304Z
LAST-MODIFIED:20210603T153304Z
UID:10006803-1624465800-1624471200@seasevents.nmsdev7.com
SUMMARY:ODEI Spotlight: Pride on Ice
DESCRIPTION:Pride on Ice\nWednesday\, June 23rd | 4:30-6:00 pm\nPenn Ice Rink (3130 Walnut St)\n\nBe part of Penn on Ice\, an interactive experience\, and join us for free skating (or skate watching)\, great music\, and loads of LGBTQ+ pride! Come in pride finery or as you are\, as we will have some fun swag to liven up the party. Graduate and undergraduate students\, staff\, faculty\, alum\, and their families are welcome! *PennOpen Passes will be checked\, and masks must be worn!
URL:https://seasevents.nmsdev7.com/event/odei-spotlight-pride-on-ice/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210624T160000
DTEND;TZID=America/New_York:20210624T170000
DTSTAMP:20260407T073840
CREATED:20210622T181843Z
LAST-MODIFIED:20210622T181843Z
UID:10006811-1624550400-1624554000@seasevents.nmsdev7.com
SUMMARY:Doctoral Dissertation Defense: "Machine Learning for Robot Motion Planning"
DESCRIPTION:Robot motion planning is a field that encompasses many different problems and algorithms. From the traditional piano mover’s problem to more complicated kinodynamic planning problems\, motion planning requires a broad breadth of human expertise and time to design well functioning algorithms. A traditional motion planning pipeline consists of modeling a system and then designing a planner and planning heuristics. Each part of this pipeline can incorporate machine learning. Planners and planning heuristics can benefit from machine learned heuristics\, while system modeling can benefit from model learning. Each aspect of the motion planning pipeline comes with tradeoffs between computational effort and human effort. This work explores algorithms that allow motion planning algorithms and frameworks to find a compromise between the two. First\, a framework for learning heuristics for sampling-based planners is presented. The efficacy of the framework depends on human designed features and policy architecture. Next\, a framework for learning system models is presented that incorporates human knowledge as constraints. The amount of human effort can be modulated by the quality of the constraints given. Lastly\, automatic constraint generation is explored to enable a larger range of trade-offs between human expert constraint generation and data driven constraint generation. We apply these techniques and show results in a variety of robotic systems.\n\nEmail dtadros@seas.upenn.edu for Zoom link.
URL:https://seasevents.nmsdev7.com/event/dissertation-defense-machine-learning-for-robot-motion-planning/
CATEGORIES:Dissertation or Thesis Defense
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210628T120000
DTEND;TZID=America/New_York:20210628T130000
DTSTAMP:20260407T073840
CREATED:20210520T133217Z
LAST-MODIFIED:20210520T133217Z
UID:10006791-1624881600-1624885200@seasevents.nmsdev7.com
SUMMARY:PSOC Webinar: Kevin Tharp & Keshav Patil
DESCRIPTION:Join Zoom Meeting: \nhttps://upenn.zoom.us/j/99334915941?pwd=eDRXV1lITDlySXFyRHUyUzdmRldoQT09 \nMeeting ID: 993 3491 5941 \nPasscode: 189247 \nPSOC@Penn Summer Webinars 2021 \nContact manu@seas.upenn.edu with any questions \nKevin Tharp 12:00-12:30 PM \nKeshav Patil 12:30-1:00 PM
URL:https://seasevents.nmsdev7.com/event/psoc-webinar-kevin-tharp-keshav-patil/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Seminar,Doctoral,Student,Postdoctoral
ORGANIZER;CN="PSOC":MAILTO:manu@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210629T103000
DTEND;TZID=America/New_York:20210629T120000
DTSTAMP:20260407T073840
CREATED:20210615T185744Z
LAST-MODIFIED:20210615T185744Z
UID:10006809-1624962600-1624968000@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Towards Manipulation of Large Objects by Robotic Edge Rolling with Quori\, an Affordable Socially Interactive Humanoid Robot"
DESCRIPTION:Hardware platforms for socially interactive robotics can be limited by cost or lack of functionality. In this talk I will present the overall system—design\, hardware\, and software—for Quori\, a novel\, affordable\, socially interactive humanoid robot platform for facilitating non-contact human-robot interaction(HRI) research. The design of the system is motivated by feedback sampled from the HRI research community. The overall design maintains a balance of affordability and functionality. Ten Quori platforms have been awarded to a diverse group of researchers from across the United States to facilitate HRI research to build a community database from a common platform. \nMotivated by the desire to increase the abilities of a robot like-Quori I will also discuss my past work and current investigation into robotic edge-rolling. I will introduce the concept of robotic edge-rolling\, a novel robotic manipulation technique for moving cylindrical objects by rolling them on the circular edge of the bottom face. This method\, with possible applications to object transportation\, part reorientation\, and the like\, is an alternative to the traditional grasp-lift-and-carry manipulation\, which might not be possible when it comes to handling large\, heavy objects beyond the carrying capacity of the robot. \nI will conclude with my current work studying how the shape of zero mobility effectors affect the mechanics\, and practicality of edge-rolling manipulation and develop planning and controls for transporting objects by edge-rolling manipulation\, referred to as Roll and Place(RnP). By studying the mechanics of the edge-rolling task\, constraints will be expressed in a way to prescribe and optimize the shape of the zero mobility effectors.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-towards-manipulation-of-large-objects-by-robotic-edge-rolling-with-quori-an-affordable-socially-interactive-humanoid-robot/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210630T200000
DTEND;TZID=America/New_York:20210630T210000
DTSTAMP:20260407T073840
CREATED:20210603T153355Z
LAST-MODIFIED:20210603T153355Z
UID:10006804-1625083200-1625086800@seasevents.nmsdev7.com
SUMMARY:ODEI Spotlight: LGBTQ+ Pride Trivia Night
DESCRIPTION:LGBTQ+ Pride Trivia Night\nWednesday\, June 30th | 8pm ET\nRegister here: bit.ly/queertriviareg\n\nWhat was the first campus LGBTQ+ center in Pennsylvania? Yes\, Penn! Join us from wherever you are for a fun night of interactive LGBTQ+ trivia with the LGBT Center and PennGALA to end pride month with a bang!  Alum\, graduate and undergraduate students\, staff\, faculty\, and friends are welcome to play. Note: two internet connected devices are required (e.g.\, a mobile and laptop).
URL:https://seasevents.nmsdev7.com/event/odei-spotlight-lgbtq-trivia/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210702T080000
DTEND;TZID=America/New_York:20210702T100000
DTSTAMP:20260407T073840
CREATED:20210621T133901Z
LAST-MODIFIED:20210621T133901Z
UID:10006810-1625212800-1625220000@seasevents.nmsdev7.com
SUMMARY:Doctoral Dissertation: "Development of Robot-based Cognitive and Motor Assessment Tools for Stroke and HIV Neurorehabilitation" (Kevin Bui)
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania and Dr. Michelle Johnson are pleased to announce the Doctoral Dissertation Defense of Kevin Bui. \nZoom link:\nhttps://upenn.zoom.us/j/96436500457?pwd=OUVTSjNpNWp1Z0dGVnpyaVJUa0VHQT09\n\nMeeting ID: 964 3650 0457\nPasscode: 571655
URL:https://seasevents.nmsdev7.com/event/doctoral-dissertation-development-of-robot-based-cognitive-and-motor-assessment-tools-for-stroke-and-hiv-neurorehabilitation-kevin-bui/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210706T103000
DTEND;TZID=America/New_York:20210706T120000
DTSTAMP:20260407T073840
CREATED:20210625T162928Z
LAST-MODIFIED:20210625T162928Z
UID:10006812-1625567400-1625572800@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Nanocellulose Fibers as Reinforcement to Improve Strength and Toughness in Structural Materials"
DESCRIPTION:Cellulose nanofibrils (CNFs) are a naturally abundant polymer and have superior mechanical properties\, high aspect ratios\, are transparent and biodegradable\, which make them attractive to be used in structural materials. As a reinforcing phase\, CNFs have the potential to improve the mechanical properties of polymer materials. While there are active research efforts aimed at incorporating CNFs into polymers for use as structural materials\, the field is still in its infancy due to the challenge of achieving good compatibility and the challenge of maintaining strength while trying to enhance fracture toughness and crack growth resistance. \nIn the first part of this study\, one dimensional composite fibers are fabricated using TEMPO-CNF to increase the strength and toughness of the common polymer PMMA\, a hydrophobic and challenging material to bond with CNFs. The composite fibers were prepared via solvent exchange\, melt-spinning and drawing to obtain fibers of diameters around 200 microns. Tensile testing\, image correlation to measure the strains\, and fracture test with flat faced edge crack demonstrated the enhancement of modulus\, strength\, and fracture toughness through the addition of CNFs to PMMA. Specifically\, an enhancement of 35% in Modulus\, 19% in Strength and 100% in fracture toughness were observed at 1% by wt. CNF content. \nThe second part is a distinct but interrelated research thrust to the traditional polymer integration. Composite pure cellulose sheets consisting of micro- and nanocellulose are fabricated. This study uses printing and subsequent drying processes to infuse nanocellulose into the paper matrix in various patterns to increase the strength and toughness of the network. Tensile tests and single edge notch tension (SENT) tests are performed on the specimens to evaluate their tensile and fracture behavior. Linear elastic finite element modeling is used to help guide the experimental work. This work has potential applications in using nanocellulose fibers to realize fully degradable alternatives to thin plastic sheets.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-nanocellulose-fibers-as-reinforcement-to-improve-strength-and-toughness-in-structural-materials/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210709T090000
DTEND;TZID=America/New_York:20210709T100000
DTSTAMP:20260407T073840
CREATED:20210706T160206Z
LAST-MODIFIED:20210706T160206Z
UID:10006818-1625821200-1625824800@seasevents.nmsdev7.com
SUMMARY:ESE PhD Dissertation Defense: "Balancing Fit and Complexity in Learned Representations"
DESCRIPTION:Thesis Title: Balancing Fit and Complexity in Learned Representations \nAbstract: This dissertation is about learning representations of functions while restricting complexity. In machine learning\, maximizing the fit and minimizing the complexity are two conflicting objectives. Common approaches to this problem involve solving a regularized empirical minimization problem\, with a complexity measure regularizer and a regularizing parameter that controls the trade-off between the two objectives. The regularizing parameter has to be tuned by repeatedly solving the problem and does not have a straightforward interpretation. This work formulates the problem as a minimization of the complexity measure subject to the fit constraints. \nThe issue of complexity is tackled in reproducing kernel Hilbert spaces (RKHSs) by introducing a novel integral representation of a family of RKHSs that allows arbitrarily placed kernels of different widths. The functional estimation problem is then written as a sparse functional problem\, which despite being non-convex and infinite-dimensional can be solved in the dual domain. This problem achieves representations of lower complexity than traditional methods because it searches over a family of RKHS rather than a subspace of a single RKHS. \nThe integral representation is used in a federated classification setting\, in which a global model is trained from a federation of agents. This is possible due to the observation that the dual optimal variables give information about the samples which are fundamental to the classification. Each agent\, therefore\, learns a local model and sends only the fundamental samples over the network. This creates a federated learning method that requires only one network communication. Its solution is proven to asymptotically converges to that of traditional classification. \nNext\, a theory for constraint specification is established. An optimization problem with a constraint for each sample point can easily become infeasible if the constraints are too tight. In contrast\, relaxing all constraints can cause the solution to not fit the data well. The constrained specification method relaxes the constraints until the marginal cost of changing a constraint is equal to the marginal complexity measure. This problem is proven to be feasible and solvable\, and shown empirically to be resilient to outliers and corrupted training data. \nFor Zoom link\, please email Elizabeth Kopeczky at: kopeczky@seas.upenn.edu.
URL:https://seasevents.nmsdev7.com/event/phd-dissertation-defense-maria-peifer/
CATEGORIES:Dissertation or Thesis Defense
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210709T130000
DTEND;TZID=America/New_York:20210709T140000
DTSTAMP:20260407T073840
CREATED:20210629T200051Z
LAST-MODIFIED:20210629T200051Z
UID:10006814-1625835600-1625839200@seasevents.nmsdev7.com
SUMMARY:MEAM MSE Thesis Defense: "Design and Characterization of an Origami-Inspired Robot that Swims via Jet Propulsion"
DESCRIPTION:Underwater swimmers present unique opportunities for using bodily reconfiguration for self-propulsion. Origami-inspired designs are low-cost\, fast to fabricate\, robust\, and can be used to create compliant mechanisms useful in energy-efficient underwater locomotion. This thesis demonstrates an origami-inspired robot that can change its body shape to ingest and expel water\, creating a jet that propels it forward similarly to cephalopods. We use the magic ball origami pattern\, which can transform between ellipsoidal (low volume) and spherical (high volume) shapes. We modified the pattern by tuning the number of its rows and columns and reported their stiffness and mechanical properties. A custom actuation mechanism contracts the robot to take in fluid\, and the inherent mechanics of the magic ball returns the robot to its natural shape upon release. We describe the design and control of this robot and verify its locomotion in a water tank. The resulting robot is able to move forward at 6.7 cm/s (0.2 body lengths/s)\, with a cost of transport of 2.0. The discussion in this thesis is mainly based on the first-generation prototype of the robot\, a future design plan to improve the robot is explained as well.
URL:https://seasevents.nmsdev7.com/event/meam-mse-thesis-defense-design-and-characterization-of-an-origami-inspired-robot-that-swims-via-jet-propulsion/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Dissertation or Thesis Defense,Master's
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210712T120000
DTEND;TZID=America/New_York:20210712T130000
DTSTAMP:20260407T073840
CREATED:20210520T134233Z
LAST-MODIFIED:20210520T134233Z
UID:10006793-1626091200-1626094800@seasevents.nmsdev7.com
SUMMARY:PSOC Webinar: Indrajit Tah & Chris Price
DESCRIPTION:Join Zoom Meeting: \nhttps://upenn.zoom.us/j/99334915941?pwd=eDRXV1lITDlySXFyRHUyUzdmRldoQT09 \nMeeting ID: 993 3491 5941 \nPasscode: 189247 \nPSOC@Penn Summer Webinars 2021 \nContact manu@seas.upenn.edu with any questions \nIndrajit Tah 12:00-12:30 PM \nChris Price 12:30-1:00 PM
URL:https://seasevents.nmsdev7.com/event/psoc-webinar-indrajit-tah-chris-price/
LOCATION:https://upenn.zoom.us/j/96715197752
CATEGORIES:Seminar,Doctoral,Graduate,Student,Postdoctoral
ORGANIZER;CN="PSOC":MAILTO:manu@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210712T133000
DTEND;TZID=America/New_York:20210712T153000
DTSTAMP:20260407T073840
CREATED:20210707T185041Z
LAST-MODIFIED:20210707T185041Z
UID:10006828-1626096600-1626103800@seasevents.nmsdev7.com
SUMMARY:CBE PhD Dissertation Defense | "Structures Formed By Colloids at Curved Fluid Interfaces"
DESCRIPTION:Abstract: \nColloidal particles accumulate and organize at fluid interfaces via capillary interactions. We study pair interactions and structure formation around spherical particles with pinned contact lines. Particles attract to apparent contact and organize in near trapped structures that reflect the underlying curvature field. We have derived pair potentials to describe these interactions. The particles distort the surrounding interface in which we calculate the distortion area and hence capillary energy around a colloid and its dependence on proximity to neighbors and on the underlying interface curvature. Dimer formation alignment with respect to principal axes and dynamics compare favorably to prediction. We use this pair potential in Monte Carlo simulations to compare to the structures formed. Extensions to address elongated particles are discussed.
URL:https://seasevents.nmsdev7.com/event/cbe-phd-dissertation-defense-structures-formed-by-colloids-at-curved-fluid-interfaces/
LOCATION:Zoom – Email CBE for link
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210713T103000
DTEND;TZID=America/New_York:20210713T120000
DTSTAMP:20260407T073840
CREATED:20210629T220346Z
LAST-MODIFIED:20210629T220346Z
UID:10006815-1626172200-1626177600@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "A Methodology for Self-Replicating Robots from Ice"
DESCRIPTION:In the late 1940s\, John von Neumann first introduced the concept of self-replication as a way of furthering cellular reproduction research. By the late ‘50s and ’60s this research diverges along two separate paths: cellular automata replication with a focus on biological systems and robotics/machine replication. Generally the work in robotic systems focuses on the theoretical. While there has been some work on physical systems they are not deployable outside of a laboratory setting and are in fact self-assembling systems rather than self-replicating systems. \nIn this talk I will present research towards a self-replicating and self-reconfigurable system which uses found materials. These projects work towards solving a limitation of self-replicating robotic systems and their inability to utilize materials at the deployment sites for replication. First I review the current state of the art in self-replication and then present our work to date with found materials. Our contributions include: (1) a low-cost technique for quantifying the material properties of tree branches and building structures with them and (2) highlighting\, from the perspective of energy efficiency\, the manufacturing methods behind a proof-of-concept robot made from ice.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-a-methodology-for-self-replicating-robots-from-ice/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210713T110000
DTEND;TZID=America/New_York:20210713T120000
DTSTAMP:20260407T073840
CREATED:20210629T173019Z
LAST-MODIFIED:20210629T173019Z
UID:10006813-1626174000-1626177600@seasevents.nmsdev7.com
SUMMARY:MEAM Ph.D. Thesis Defense: "From Deployments of Elder Care Service Robots to the Design of Affordable Low-Complexity End-Effectors and Novel Manipulation Techniques"
DESCRIPTION:Older adults are forming a much larger percentage of the population leading to a strain in the healthcare sector. It is expected that the population aged 65 and over in the United States alone will double in the next 30 years\, and similarly worldwide. Despite the abundance of facilities to accommodate the growing older adult population\, there is a shortage of caregivers to staff these facilities. With the scarcity of care options available\, and necessity aggravated by the COVID-19 pandemic and its impact on the elderly\, low-cost robots may be a creative and vastly accessible solution for mobile and manipulation tasks that would normally be handled by a caregiver. \nThis thesis proposes an investigation on both behavioral and technical aspects of human-robot interaction (HRI) in elder care settings\, in view of an affordable platform capable of executing desired tasks. The behavioral investigation combines a qualitative study with focus groups and surveys from not only the elders’ standpoint\, but also from the standpoint of healthcare professionals to investigate suitable tasks to be accomplished by a service robot in such environments. Through multiple deployments of various robot embodiments at actual elder care facilities (such as at a low-income Supportive Apartment Living\, SAL\, and Program of All-Inclusive Care\, PACE Centers) and interaction with older adults\, design guidelines are developed to improve on both interaction and usability aspects. This need assessment informed the technical investigation of this work\, where we initially propose picking and placing objects using end-effectors without internal mobility (or zero degrees-of-freedom\, DOF)\, considering both quasi-static (tipping and regrasping as in-hand manipulation) and dynamic approaches. Maximizing grasping versatility by allowing robots to grasp multiple objects sequentially using a single end-effector and DOF is also proposed. These novel manipulation techniques and end-effector designs focus on minimizing robot hardware usage and cost\, while still performing complex tasks and complying with safety constraints imposed by the elder care facilities.
URL:https://seasevents.nmsdev7.com/event/meam-ph-d-thesis-defense-from-deployments-of-elder-care-service-robots-to-the-design-of-affordable-low-complexity-end-effectors-and-novel-manipulation-techniques/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Dissertation or Thesis Defense
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210715T100000
DTEND;TZID=America/New_York:20210715T120000
DTSTAMP:20260407T073840
CREATED:20210707T190014Z
LAST-MODIFIED:20210707T190014Z
UID:10006829-1626343200-1626350400@seasevents.nmsdev7.com
SUMMARY:CBE PhD Dissertation Defense | "Bijels for Continuous Reactive Separation"
DESCRIPTION:Abstract: \nSeveral chemical processes involve the use of mutually immiscible molecules\, for example a water-soluble catalyst is used in combination with oil-soluble reagents to produce water soluble products. There are two possible strategies to run these processes. A mutual solvent can be used to promote mixing of the otherwise immiscible molecules; however\, such a system would make the separation of the product challenging. Biphasic systems comprising two immiscible phases provide a very powerful platform because their ability to host both polar and apolar species and at the same time allowing separation of molecules of different polarity by simple phase partitioning\, without relying on complex and often energy intensive separation processes. Such a strategy is employed in several industrially relevant scenarios like fatty acid and pharmaceutical manufacturing for which the desired product is made from an oil-soluble precursor\, while the desired products and the catalyst are water-soluble. Two forms of biphasic reactive separation systems have been widely studied: emulsion-based and membrane-based systems. There are several examples of successful implementation of simultaneous reactive separation based on emulsions and membranes; however\, the efficiency and effectiveness of these systems can be further enhanced. Significantly\, all emulsion based systems comprise a continuous phase and a droplet phase; the discrete nature of the droplets makes the supply or reagent or retrieval of product challenging. Although continuous processing is possible\, membrane reactors have limitations in their interfacial area. \nA recently developed class of soft materials\, bicontinuous interfacially jammed emulsion gels or bijels provide opportunity to overcome the shortcomings of emulsions and membrane-based biphasic reactors. Bijels have a bicontinuous architecture which allows intimate contact between the two fluid phases; moreover\, bijels provide a significantly higher water/oil interfacial area than membranes. Traditionally bijels are made by triggering the spinodal decomposition of a binary mixture of fluids either by temperature change or co-solvent removal; the three dimensional bicontinuous structure arising from spinodal decomposition has several advantages since both the water and the oil phases are co-continuous and therefore allow for the continuous transport of chemicals throughout its domains. Despite these promising features\, several aspects of bijels must be further addressed to enable their application as reactive media. For examples\, bijels are fragile; they lose their microscopic and macroscopic structure under mechanical (e.g. flow\, agitation) and chemical stresses (e.g. pH change). Moreover\, most bijel formulations are unsuitable for system involving biological molecules such as enzymes\, as they require surfactants to control nanoparticle wetting properties. This study addresses these shortcomings and develops simple and inexpensive methods to engineer bijels for reactive separation. Reactive separation is successfully demonstrated in these bijels in batch mode. Lastly\, for the first time\, bijels are used for continuous reactive separation; bijel-based reactor conversion is compared to membrane based reactors and simple batch stirred tank reactors. Future studies will include the further development of bijels microreactor design and its development as a potentially disruptive technology in multiphase catalysis.
URL:https://seasevents.nmsdev7.com/event/cbe-phd-dissertation-defense-bijels-for-continuous-reactive-separation/
LOCATION:Zoom – Email CBE for link
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210715T100000
DTEND;TZID=America/New_York:20210715T120000
DTSTAMP:20260407T073840
CREATED:20210709T164717Z
LAST-MODIFIED:20210709T164717Z
UID:10006830-1626343200-1626350400@seasevents.nmsdev7.com
SUMMARY:CBE PhD Dissertation Defense | "Diverse Roles of Nuclear Intermediate Filaments in Proliferating Cells"
DESCRIPTION:Abstract: \nEmbryonic tissues and cancer have in common the fact that they are both highly proliferative tissues rapidly moving through the cell cycle\, as opposed to most other differentiated tissues in an adult. DNA damage can arrest some embryonic cells but genetic instability is a hallmark of cancer. This thesis studies the contrasting role of two nuclear intermediate filaments – Lamin A and Lamin B1 in the proliferating cells of embryonic hearts and cancer. Lamin B1 is upregulated together with proliferation genes in at least 15 cancers curated in The Cancer Genome Atlas (TCGA)\, whereas Lamin A trends align with ‘matrix mechanosensititve’ genes. With physicochemical principles in mind\, we show Lamin B1 scales with many mitosis genes in cancer\, and experiments reveal its role in promoting cell cycle and direct regulation by the cell cycle transcription factor FOXM1. The genes that scale are used in Scaling-informed Machine Learning (SIML) to better predict overall patient survival and to better identify cell lineage in single cell RNA profiles. A distinct role of Lamin A is revealed by experiments on the first organ in its first days – the heart – which show Lamin A levels are modulated in interphase cells through phosphorylation in response to acto-myosin stress. Lamin A levels determine the probability of nuclear rupture and subsequent DNA damage\, telomere attrition\, and cell cycle arrest. Nuclear lamins thus have different roles in responding to and regulating cell cycle.
URL:https://seasevents.nmsdev7.com/event/cbe-phd-dissertation-defense-diverse-roles-of-nuclear-intermediate-filaments-in-proliferating-cells/
LOCATION:Zoom – Email CBE for link
CATEGORIES:Doctoral,Graduate,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
END:VCALENDAR