Event List
retrieve:
Return the details about the given Event id.
list:
List all Event objects.
GET /api/v1/events/?format=api&offset=240&ordering=event__url_online_room
{ "count": 265, "next": "https://memento.epfl.ch/api/v1/events/?format=api&limit=10&offset=250&ordering=event__url_online_room", "previous": "https://memento.epfl.ch/api/v1/events/?format=api&limit=10&offset=230&ordering=event__url_online_room", "results": [ { "id": 70233, "title": "Cryo electron microscopy of vitreous sections revisited for high throughput tomographic imaging of tissue and cells", "slug": "cryo-electron-microscopy-of-vitreous-sections-revi", "event_url": "https://memento.epfl.ch/event/cryo-electron-microscopy-of-vitreous-sections-revi", "visual_url": "https://memento.epfl.ch/image/31688/200x112.jpg", "visual_large_url": "https://memento.epfl.ch/image/31688/720x405.jpg", "visual_maxsize_url": "https://memento.epfl.ch/image/31688/max-size.jpg", "lang": "en", "start_date": "2026-05-05", "end_date": "2026-05-05", "start_time": "16:00:00", "end_time": "17:00:00", "description": "<br>\r\n<br>\r\nCellular cryo electron tomography is experiencing spectacular developments, revealing with increasing resolution and complexity the structures and interactions of macromolecules at work in living matter. To obtain thin samples from biological tissue and cells in their flash-frozen native state, cryo-FIB milling is nowadays the most popular method, with impressive successes. The alternative, cryo-ultramicrotomy - also known as CEMOVIS - has been overshadowed because of (i) technical difficulties associated to cryo-section generation and collection - in particular the lack of control over adhesion; and (ii) crevasses and compression artefacts.<br>\r\nI will present recent developments with optimization of the experimental workflow, focusing on section adhesion and their support grids. These result in high throughput data acquisition, with typically several tens to hundreds of cryo-tomograms per sample. Revisiting cutting artefacts shows that crevasses alter but 10 % of the sample volume. Compression is heterogeneous, with scale and material-dependent effects. This is altogether a drawback – with no simple computational correction – and an advantage for projects dedicated to non-(or little)-affected objects such as nucleosomes and chromatin.<br>\r\nAltogether, it is time to revive CEMOVIS as a practical alternative to cryo-FIB milling, offering specific advantages: (i) imaging of large areas of any type of sample, from cells to tissues, organs or even entire organisms – and more generally all kinds of hydrated molecular systems ; (ii) the possibility of serial section approaches ; (iii) no beam damage ; and (iv) a specimen thickness that can be tuned down to 30-50 nm, which may be an advantage for high resolution imaging of small molecular complexes.<br>\r\n<br>\r\n<br>\r\n<br>\r\n<br>\r\n<strong>Biography</strong><br>\r\n<br>\r\nAmélie Leforestier is a CNRS research director at the Solid-State Physics Laboratory (LPS, Paris-Saclay, France). After a PhD in Life Sciences on liquid crystalline self-assembly of DNA, she learned cryo electron microscopy during her post-doctoral studies in the group of Jacques Dubochet in Lausanne. Back in France, she set up a cryo-EM facility for soft matter physics at LPS. She is part of an <a href=\"https://equipes.lps.u-psud.fr/sobio/\">interdisciplinary team</a> dedicated to self-assembly processes at work in living systems at the molecular level. Her work, combining concepts from soft matter physics (poly-electrolytes, liquid crystals, frustration) and structural biology, focuses on the geometry and interactions in condensed states of DNA and chromosomes <em>in vitro</em> and <em>in situ</em>.", "image_description": "", "creation_date": "2025-10-29T08:00:54", "last_modification_date": "2026-03-04T11:07:41", "link_label": "", "link_url": "", "canceled": "False", "cancel_reason": "", "place_and_room": "", "url_place_and_room": "", "url_online_room": "https://epfl.zoom.us/j/65708791562", "spoken_languages": [ "https://memento.epfl.ch/api/v1/spoken_languages/2/?format=api" ], "speaker": "Amélie Leforestier | CNRS, France", "organizer": "CIME", "contact": "[email protected]", "is_internal": "True", "theme": "", "vulgarization": { "id": 1, "fr_label": "Tout public", "en_label": "General public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/118314/", "category": { "id": 1, "code": "CONF", "fr_label": "Conférences - Séminaires", "en_label": "Conferences - Seminars", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/1/?format=api", "https://memento.epfl.ch/api/v1/mementos/5/?format=api", "https://memento.epfl.ch/api/v1/mementos/6/?format=api", "https://memento.epfl.ch/api/v1/mementos/8/?format=api", "https://memento.epfl.ch/api/v1/mementos/9/?format=api", "https://memento.epfl.ch/api/v1/mementos/110/?format=api", "https://memento.epfl.ch/api/v1/mementos/284/?format=api", "https://memento.epfl.ch/api/v1/mementos/339/?format=api" ] }, { "id": 71516, "title": "Xenon Dynamic Nuclear Polarization: from Spin Dynamics to In-Vivo Applications", "slug": "xenon-dynamic-nuclear-polarization-from-spin-dyn-2", "event_url": "https://memento.epfl.ch/event/xenon-dynamic-nuclear-polarization-from-spin-dyn-2", "visual_url": "https://memento.epfl.ch/image/32852/200x112.jpg", "visual_large_url": "https://memento.epfl.ch/image/32852/720x405.jpg", "visual_maxsize_url": "https://memento.epfl.ch/image/32852/max-size.jpg", "lang": "en", "start_date": "2026-04-24", "end_date": "2026-04-24", "start_time": "17:00:00", "end_time": null, "description": "<p>Thesis Directors: Prof. R. Gruetter, Dr A. Capozzi<br>\r\nPhysics doctoral program<br>\r\nThesis Nr. 11427<br>\r\n<br>\r\nTo take part in the public defense, please contact directly the speaker</p>", "image_description": "", "creation_date": "2026-04-01T14:42:56", "last_modification_date": "2026-04-01T14:42:58", "link_label": "", "link_url": "", "canceled": "False", "cancel_reason": "", "place_and_room": "CE 1 4", "url_place_and_room": "https://plan.epfl.ch/?room==CE%201%204", "url_online_room": "https://epfl.zoom.us/j/66418358152?pwd=kRVVP5y6NGjH4pDROhIPv7t0zIpSvI.1", "spoken_languages": [], "speaker": "<strong>Emma Linnea WISTRÖM</strong>", "organizer": "", "contact": "<strong>Emma Linnea WISTRÖM</strong>", "is_internal": "False", "theme": "", "vulgarization": { "id": 1, "fr_label": "Tout public", "en_label": "General public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "EDPY", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/120266/", "category": { "id": 12, "code": "SOUTE", "fr_label": "Soutenances de thèses", "en_label": "Thesis defenses", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/1/?format=api", "https://memento.epfl.ch/api/v1/mementos/5/?format=api", "https://memento.epfl.ch/api/v1/mementos/6/?format=api" ] }, { "id": 71560, "title": "Growth and Dissolution Mechanisms of Siderite Scale on Iron under Environmental Transients", "slug": "growth-and-dissolution-mechanisms-of-siderite-sc-2", "event_url": "https://memento.epfl.ch/event/growth-and-dissolution-mechanisms-of-siderite-sc-2", "visual_url": "https://memento.epfl.ch/image/32897/200x112.jpg", "visual_large_url": "https://memento.epfl.ch/image/32897/720x405.jpg", "visual_maxsize_url": "https://memento.epfl.ch/image/32897/max-size.jpg", "lang": "en", "start_date": "2026-04-17", "end_date": "2026-04-17", "start_time": "17:00:00", "end_time": null, "description": "<p>Thesis Directors: Dr. S. Mischler, Dr A. N. Igual Muñoz<br>\r\nMaterials Science and Engineering doctoral program<br>\r\nThesis Nr. 11619<br>\r\n<br>\r\nTo take part in the public defense, please contact directly the speaker</p>", "image_description": "", "creation_date": "2026-04-09T13:37:23", "last_modification_date": "2026-04-09T13:37:26", "link_label": "", "link_url": "", "canceled": "False", "cancel_reason": "", "place_and_room": "MXF 1", "url_place_and_room": "https://plan.epfl.ch/?room==MXF%201", "url_online_room": "https://epfl.zoom.us/j/66845970906?pwd=CcDWk1AFe1AvGXVLFu5X5BKEX1B9m6.1", "spoken_languages": [], "speaker": "<a href=\"mailto:[email protected]\"><strong>Marian Nida Sagarino LUMONGSOD-THOMPSON</strong></a>", "organizer": "", "contact": "<a href=\"mailto:[email protected]\"><strong>Marian Nida Sagarino LUMONGSOD-THOMPSON</strong></a>", "is_internal": "False", "theme": "", "vulgarization": { "id": 1, "fr_label": "Tout public", "en_label": "General public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "EDMX", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/120326/", "category": { "id": 12, "code": "SOUTE", "fr_label": "Soutenances de thèses", "en_label": "Thesis defenses", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/8/?format=api", "https://memento.epfl.ch/api/v1/mementos/1/?format=api", "https://memento.epfl.ch/api/v1/mementos/6/?format=api" ] }, { "id": 71585, "title": "IC Colloquium: Sphere Packing Problem and AI-Assisted Formalization", "slug": "ic-colloquium-sphere-packing-problem-and-ai-assi-2", "event_url": "https://memento.epfl.ch/event/ic-colloquium-sphere-packing-problem-and-ai-assi-2", "visual_url": null, "visual_large_url": null, "visual_maxsize_url": null, "lang": "en", "start_date": "2026-04-20", "end_date": "2026-04-20", "start_time": "10:15:00", "end_time": "11:15:00", "description": "<strong>By:</strong> Maryna Viazovska and Auguste Poiroux - EPFL<br>\r\n<br>\r\n<strong>Maryna Viazovska - Abstract</strong><br>\r\nThe talk will present the path toward formalizing the sphere packing problem in dimensions 8 and 24. It will highlight the main milestones achieved so far, the role of AI, and the challenges arising in large-scale formalization projects.<br>\r\n<br>\r\n<strong>Auguste Poiroux - Abstract</strong><br>\r\nOver the last year, AI systems have progressed rapidly in mathematics and are beginning to tackle conjectures and open problems. This progress is exciting, but it also raises a verification challenge. Sophisticated proofs, whether written by humans or generated by AI, require substantial expertise and time to check, and AI increases this burden by producing candidate proofs at scale. Formalization, the translation of mathematical content into proof assistant code, provides a promising way forward. Manual formalization, however, still requires substantial effort and expertise. Autoformalization, using AI, is now showing key progress in addressing this bottleneck. In roughly one year, the state of the art has moved from barely formalizing undergraduate-level statements to automatically formalizing whole papers and textbooks. In this talk, I will present my work on the topic at EPFL and Math, Inc. More specifically, I will discuss autoformalization in the context of Sphere Packing in dimensions 8 and 24, the verification of AI solutions to conjectures using autoformalization, and the next steps in AI for mathematics.<br>\r\n<br>\r\n<strong>More information</strong><br>\r\n<a href=\"https://aiformath.epfl.ch/\">https://aiformath.epfl.ch/</a> <br>\r\n ", "image_description": "", "creation_date": "2026-04-14T09:56:59", "last_modification_date": "2026-04-14T11:04:54", "link_label": "", "link_url": "", "canceled": "False", "cancel_reason": "", "place_and_room": "BC 420", "url_place_and_room": "https://plan.epfl.ch/?room==BC%20420", "url_online_room": "https://epfl.zoom.us/j/67078120700", "spoken_languages": [ "https://memento.epfl.ch/api/v1/spoken_languages/2/?format=api" ], "speaker": "", "organizer": "", "contact": "Host: Viktor Kuncak", "is_internal": "False", "theme": "", "vulgarization": { "id": 1, "fr_label": "Tout public", "en_label": "General public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/120366/", "category": { "id": 1, "code": "CONF", "fr_label": "Conférences - Séminaires", "en_label": "Conferences - Seminars", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/6/?format=api", "https://memento.epfl.ch/api/v1/mementos/27/?format=api", "https://memento.epfl.ch/api/v1/mementos/50/?format=api", "https://memento.epfl.ch/api/v1/mementos/151/?format=api" ] }, { "id": 71493, "title": "Photopolymer composites for temporary protective coatings and printing applications", "slug": "photopolymer-composites-for-temporary-protective-c", "event_url": "https://memento.epfl.ch/event/photopolymer-composites-for-temporary-protective-c", "visual_url": "https://memento.epfl.ch/image/32835/200x112.jpg", "visual_large_url": "https://memento.epfl.ch/image/32835/720x405.jpg", "visual_maxsize_url": "https://memento.epfl.ch/image/32835/max-size.jpg", "lang": "en", "start_date": "2026-04-21", "end_date": "2026-04-21", "start_time": "18:15:00", "end_time": null, "description": "<p>Thesis Director: Dr. Y. Leterrier,<br>\r\nAdvanced Manufacturing doctoral program<br>\r\nThesis Nr. 11368<br>\r\n<br>\r\nTo take part in the public defense, please contact directly the speaker</p>", "image_description": "", "creation_date": "2026-03-30T16:43:18", "last_modification_date": "2026-04-02T10:56:41", "link_label": "", "link_url": "", "canceled": "False", "cancel_reason": "", "place_and_room": "MXF 1", "url_place_and_room": "https://plan.epfl.ch/?room==MXF%201", "url_online_room": "https://epfl.zoom.us/j/6725401665?pwd=Dkgztd80gaYCAtARrtY7BoyopLhhTn.1", "spoken_languages": [], "speaker": "<strong>Alper BALKAN</strong>", "organizer": "", "contact": "<strong>Alper BALKAN</strong>", "is_internal": "False", "theme": "", "vulgarization": { "id": 1, "fr_label": "Tout public", "en_label": "General public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "EDAM", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/120232/", "category": { "id": 12, "code": "SOUTE", "fr_label": "Soutenances de thèses", "en_label": "Thesis defenses", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/8/?format=api", "https://memento.epfl.ch/api/v1/mementos/1/?format=api", "https://memento.epfl.ch/api/v1/mementos/6/?format=api" ] }, { "id": 71338, "title": "Probing Ultrafast Electron Motion with Attosecond X-ray Free Electron Lasers", "slug": "probing-ultrafast-electron-motion-with-attosecond", "event_url": "https://memento.epfl.ch/event/probing-ultrafast-electron-motion-with-attosecond", "visual_url": "https://memento.epfl.ch/image/32692/200x112.jpg", "visual_large_url": "https://memento.epfl.ch/image/32692/720x405.jpg", "visual_maxsize_url": "https://memento.epfl.ch/image/32692/max-size.jpg", "lang": "en", "start_date": "2026-04-23", "end_date": "2026-04-23", "start_time": "17:15:00", "end_time": "18:30:00", "description": "<p>The ultrafast motion of electrons is a frontier problem for photochemical processes, as electron motion is a key ingredient of all chemical reactions. Electronic rearrangement is also the means by which light energy is harnessed in photochemistry. The timescale for coherent electron dynamics is set by the energetic splitting of the electronic states, which in small molecular systems, is on the scale of an electron volt (eV). This sets the natural timescale for electronic motion to be few-to-sub femtosecond (fs).<br>\r\n<br>\r\nTo approach these extreme timescales, we can use short pulses of light to excite small quantum systems. For instance, the impulsive interactions between a light field and a quantum system can induce time-dependent oscillations in the charge density. Such electronic wavepacket motion (in the absence of nuclear motion) has come to be referred to as charge migration [1]. While the initial charge dynamics following impulsive excitation (or ionization) begins as purely electronic motion, this wavepacket will couple to other degrees of freedom in the system (i.e. nuclear motion or chemical dynamics) and lead to localization of the charge. The transfer of electronic charge across molecular bonds is fundamental to an understanding of charge transfer phenomena.<br>\r\n<br>\r\nThe study of these fundamental phenomena requires state-of-the-art light sources, such as the Linac Coherent Light Source (LCLS), an X-ray free electron laser (XFEL) facility which produces high-brightness, ultrashort pulses, with wavelength continuously tunable across the x-ray regime. Schemes to provide isolated, sub-femtosecond pulses from an FEL are being explored at facilities world-wide, and recently we have demonstrated such pulses at the LCLS [2]; opening the door for time-resolved measurements of ultrafast electron dynamics on their natural timescale. In my talk, I will highlight our recent developments in probing electronic motion in small molecular systems. We have employed sub-femtosecond pulses from the XFEL to study ultrafast charge dynamics in both core-excited [3,4,5] and low-lying cationic systems [6]. We are also developing nonlinear x-ray spectroscopies [7,8] to initiate and control electron dynamics. The control of coherent electron motion represents a significant step towards achieving charge-directed reactivity [9], a grand challenge for the field of attosecond science.<br>\r\n<br>\r\n[1] Cederbaum and Zobeley 1999 Chemical Physics Letters 307 205–210<br>\r\n[2] Duris and Li et al. 2020 Nature Photonics 14 30-36<br>\r\n[3] Li and Driver et al. 2022 Science 375 285-290<br>\r\n[4] Driver et al. 2024 Nature 632 762-767 (2024)<br>\r\n[5] Wang and Driver et al. Phys. Rev. X 15 011008 (2005)<br>\r\n[6] Driver et al. ArXiv:2411.01700<br>\r\n[7] O’Neal et al. 2020 Phys. Rev. Lett. 125 073203<br>\r\n[8] Biggs et al. 2023 Proc. Nat. Acad. Sci. 110 15597-15601<br>\r\n[9] F. Remacle, R. D. Levine, and M. A. Ratner 1998 Chem. Phys. Lett. 285, 25<br>\r\n </p>", "image_description": "", "creation_date": "2026-03-10T09:08:13", "last_modification_date": "2026-03-10T09:08:45", "link_label": "", "link_url": "", "canceled": "False", "cancel_reason": "", "place_and_room": "CH G1 495", "url_place_and_room": "https://plan.epfl.ch/?room==CH%20G1%20495", "url_online_room": "https://epfl.zoom.us/j/67570484652?pwd=UpB6UFTCS3n1QpxlIaYM2UvuMD3tkr.1", "spoken_languages": [ "https://memento.epfl.ch/api/v1/spoken_languages/2/?format=api" ], "speaker": "James Cryan, Stanford Univ. / SLAC", "organizer": "Christoph Bostedt", "contact": "Christoph Bostedt", "is_internal": "False", "theme": "", "vulgarization": { "id": 2, "fr_label": "Public averti", "en_label": "Informed public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "pcseminar", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/120028/", "category": { "id": 1, "code": "CONF", "fr_label": "Conférences - Séminaires", "en_label": "Conferences - Seminars", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/1/?format=api", "https://memento.epfl.ch/api/v1/mementos/5/?format=api", "https://memento.epfl.ch/api/v1/mementos/204/?format=api", "https://memento.epfl.ch/api/v1/mementos/14/?format=api", "https://memento.epfl.ch/api/v1/mementos/191/?format=api", "https://memento.epfl.ch/api/v1/mementos/6/?format=api" ] }, { "id": 71579, "title": "MEchanics GAthering –MEGA- Seminar: Bridging the Scales of Boiling: How Microscale Interactions Drive Macroscale Heat Transfer", "slug": "mechanics-gathering-mega-seminar-bridging-the-scal", "event_url": "https://memento.epfl.ch/event/mechanics-gathering-mega-seminar-bridging-the-scal", "visual_url": null, "visual_large_url": null, "visual_maxsize_url": null, "lang": "en", "start_date": "2026-04-16", "end_date": "2026-04-16", "start_time": "13:05:00", "end_time": "14:00:00", "description": "<strong>Abstract: </strong>Boiling water is something we observe every day in our kitchens, yet it is also one of the most powerful thermal management tools in modern engineering — from steam-driven power generation and cooling next-generation supercomputers to managing cryogenic fuels in spacecraft. Despite its apparent familiarity, the underlying physics of bubble nucleation remains poorly understood. The challenge lies at the microscopic level. Classical nucleation theories treat boiling as a collection of isolated, independent bubbles growing on a surface, failing to capture the complex reality of actual engineering surfaces — which consist of dense arrays of interacting nucleation sites. Using custom-engineered silicon chips with precisely spaced microcavities, we isolate and systematically control these microscopic \"neighborhoods.\" By uncovering how the spacing between neighboring sites governs bubble nucleation, coalescence, and stability, we gain a new understanding of how microscopic interactions ultimately drive macroscale thermal performance — paving the way for safer, more efficient cooling technologies.<br>\r\n<br>\r\n<strong>Bio: </strong>Dr. Rameez Iqbal is a Scientific Collaborator at the École Polytechnique Fédérale de Lausanne (EPFL), where his research focuses on micro- and nanoscale transport phenomena toward efficient power generation and advanced thermal management. Prior to this role, he was a Postdoctoral Researcher at ETH Zurich and earned his PhD through<br>\r\na collaborative program between IIT Madras and the Okinawa Institute of Science and Technology (OIST), Japan. Dr. Iqbal's contributions to the field have been recognized<br>\r\ninternationally — he is a recipient of the prestigious European Horizon 2020 Seal of Excellence (2021) and the Best PhD Thesis Award from IIT Madras (2020).", "image_description": "", "creation_date": "2026-04-13T10:41:43", "last_modification_date": "2026-04-13T10:43:30", "link_label": "", "link_url": "", "canceled": "False", "cancel_reason": "", "place_and_room": "ME B1 10", "url_place_and_room": "https://plan.epfl.ch/?room==ME%20B1%2010", "url_online_room": "https://epfl.zoom.us/j/68096021948?pwd=DiE8amDIwYw1u3VtW2xWNGKtioKL2y.1", "spoken_languages": [ "https://memento.epfl.ch/api/v1/spoken_languages/2/?format=api" ], "speaker": "<a href=\"https://people.epfl.ch/rameez.iqbal?lang=en\">Sk Rameez Iqbal</a> (<a href=\"https://www.epfl.ch/labs/eta-lab/\">ETA-LAB</a>, EPFL) ", "organizer": "MEGA.Seminar Organizing Committee", "contact": "<a href=\"http://[email protected]/\">Aliénor Riviere</a>, <a href=\"http://[email protected]/\">Danick Lamoureux</a>", "is_internal": "False", "theme": "", "vulgarization": { "id": 1, "fr_label": "Tout public", "en_label": "General public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "Boiling, phase-change, nucleation, thermal management, cooling", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/120356/", "category": { "id": 1, "code": "CONF", "fr_label": "Conférences - Séminaires", "en_label": "Conferences - Seminars", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/232/?format=api", "https://memento.epfl.ch/api/v1/mementos/191/?format=api", "https://memento.epfl.ch/api/v1/mementos/245/?format=api", "https://memento.epfl.ch/api/v1/mementos/135/?format=api", "https://memento.epfl.ch/api/v1/mementos/105/?format=api" ] }, { "id": 70833, "title": "EESS seminar talk on \"Biogeochemical Controls on Arsenic Methylation and Demethylation in Rice Paddy Soils\"", "slug": "eess-seminar-talk-on-biogeochemical-controls-on--2", "event_url": "https://memento.epfl.ch/event/eess-seminar-talk-on-biogeochemical-controls-on--2", "visual_url": "https://memento.epfl.ch/image/32237/200x112.jpg", "visual_large_url": "https://memento.epfl.ch/image/32237/720x405.jpg", "visual_maxsize_url": "https://memento.epfl.ch/image/32237/max-size.jpg", "lang": "en", "start_date": "2026-04-28", "end_date": "2026-04-28", "start_time": "12:15:00", "end_time": "13:15:00", "description": "<strong>Abstract:</strong>\r\n<div class=\"page\">\r\n<div class=\"layoutArea\">\r\n<div class=\"column\">Arsenic methylation and demethylation reactions influence arsenic speciation and fate in rice paddy soils, and understanding the balance between methylation and demethylation is important for assessing risks of arsenic toxicity in rice. Rice paddy soils are rich in organic carbon, and the conventional understanding has been that organic carbon enhances microbial arsenic methylation by fueling microbial activity. This presentation will describe a series of recent investigations — spanning pure culture to greenhouse-scale experiments — that challenge this conceptual model. First, the presentation will describe the role of carbon catabolite repression (CCR) in regulating cellular uptake and subsequent enzymatic methylation of arsenite. A combination of biosensor, gene expression, and arsenic speciation analyses demonstrate that sugars lead to CCR and a decrease in arsenic methylation, while low molecular weight organic acids do not impact arsenite uptake. The presentation will then examine couplings between methanogenesis and arsenic demethylation, wherein a greater abundance of methylotrophic carbon substrates (methanol, methylamines) promote arsenic demethylation by methanogens and limit the accumulation of methylated arsenic compounds. A genome-resolved metatranscriptomic analysis of anaerobic soil slurry experiments resolved links between methylotrophic substrate utilization and arsenic demethylation, while greenhouse experiments showed that higher levels of methanogenesis in soils were associated with lower concentrations of methylated arsenic in rice grains. Taken together, these results provide a more nuanced understanding of how utilization of distinct carbon substrates impacts arsenic methylation-demethylation dynamics, and provides mechanistic insights into how paddy soil management practices influence arsenic speciation in rice.</div>\r\n</div>\r\n</div>\r\n<br>\r\n<br>\r\n<br>\r\n<strong>Biography:</strong>\r\n\r\n<div class=\"page\">\r\n<div class=\"layoutArea\">\r\n<div class=\"column\">Dr. Matthew Reid is an associate professor in the School of Civil and Environmental Engineering at Cornell University and directs the Biogeochemistry and Ecosystem Engineering Research Group. His research program focuses on biogeochemical element cycling in natural and nature-based systems with applications to water quality. Research in the Reid Group spans physical scales and integrates mechanistic and molecular-level investigation with field-scale observation to build quantitative models for contaminant dynamics in complex biogeochemical systems. Dr. Reid's research has been recognized with early career awards from NSF and DOE. Dr. Reid was a postdoctoral scientist in the Environmental Microbiology Laboratory at EPFL, and completed his Ph.D. in Civil and Environmental Engineering at Princeton University.</div>\r\n</div>\r\n</div>", "image_description": "", "creation_date": "2026-01-12T14:34:48", "last_modification_date": "2026-02-25T14:38:54", "link_label": "", "link_url": "", "canceled": "False", "cancel_reason": "", "place_and_room": "GC B1 10", "url_place_and_room": "https://plan.epfl.ch/?room==GC%20B1%2010", "url_online_room": "https://epfl.zoom.us/j/69011077410", "spoken_languages": [ "https://memento.epfl.ch/api/v1/spoken_languages/2/?format=api" ], "speaker": "Prof. <a href=\"https://www.engineering.cornell.edu/people/matthew-charles-reid/\">Matthew Reid</a>, Cornell University ", "organizer": "EESS - IIE", "contact": "Prof. Rizlan Latmani, <a href=\"https://www.epfl.ch/labs/eml/\">EML</a>", "is_internal": "True", "theme": "", "vulgarization": { "id": 1, "fr_label": "Tout public", "en_label": "General public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "Arsenic, Methylation, Demethylation, Rice paddy soil, Carbon catabolite repression, Methanogenesis", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/119269/", "category": { "id": 1, "code": "CONF", "fr_label": "Conférences - Séminaires", "en_label": "Conferences - Seminars", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/4/?format=api", "https://memento.epfl.ch/api/v1/mementos/44/?format=api", "https://memento.epfl.ch/api/v1/mementos/110/?format=api" ] }, { "id": 70992, "title": "La « locomotive à fumée ». Histoire de la pollution de l'air par le chemin de fer au temps de la vapeur (France, Grande-Bretagne, années 1820-1960)", "slug": "la-locomotive-a-fumee-histoire-de-la-pollution-d-2", "event_url": "https://memento.epfl.ch/event/la-locomotive-a-fumee-histoire-de-la-pollution-d-2", "visual_url": "https://memento.epfl.ch/image/32379/200x112.jpg", "visual_large_url": "https://memento.epfl.ch/image/32379/720x405.jpg", "visual_maxsize_url": "https://memento.epfl.ch/image/32379/max-size.jpg", "lang": "en", "start_date": "2026-05-07", "end_date": "2026-05-07", "start_time": "16:00:00", "end_time": null, "description": "<p>Thesis Directors: Prof. J. Baudry, Dr F. Jarrige<br>\r\nArchitecture and Sciences of the City doctoral program<br>\r\nThesis Nr. 11656<br>\r\n<br>\r\nTo take part in the public defense, please contact directly the speaker</p>", "image_description": "", "creation_date": "2026-01-29T09:46:54", "last_modification_date": "2026-01-29T09:46:54", "link_label": "", "link_url": "", "canceled": "False", "cancel_reason": "", "place_and_room": "BC 420", "url_place_and_room": "https://plan.epfl.ch/?room==BC%20420", "url_online_room": "https://epfl.zoom.us/j/69149446116", "spoken_languages": [], "speaker": "<a href=\"http://[email protected]\"><strong>Arthur Grégoire Jacques EMILE</strong></a>", "organizer": "", "contact": "<a href=\"http://[email protected]\"><strong>Arthur Grégoire Jacques EMILE</strong></a>", "is_internal": "False", "theme": "", "vulgarization": { "id": 1, "fr_label": "Tout public", "en_label": "General public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "EDAR", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/119509/", "category": { "id": 12, "code": "SOUTE", "fr_label": "Soutenances de thèses", "en_label": "Thesis defenses", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/1/?format=api", "https://memento.epfl.ch/api/v1/mementos/4/?format=api", "https://memento.epfl.ch/api/v1/mementos/6/?format=api" ] }, { "id": 70719, "title": "Training \"Up to Speed with Zotero\"", "slug": "training-up-to-speed-with-zotero-8", "event_url": "https://memento.epfl.ch/event/training-up-to-speed-with-zotero-8", "visual_url": "https://memento.epfl.ch/image/32141/200x112.jpg", "visual_large_url": "https://memento.epfl.ch/image/32141/720x405.jpg", "visual_maxsize_url": "https://memento.epfl.ch/image/32141/max-size.jpg", "lang": "en", "start_date": "2026-05-12", "end_date": "2026-05-12", "start_time": "09:30:00", "end_time": "11:30:00", "description": "<div class=\"all_text\"><strong>This workshop is for people who want to start using Zotero, an open source software which enables you to collect, organize and share bibliographic references. From a thesis to an academic paper, Zotero can spare you a huge amount of time.</strong><br>\r\n<br>\r\nAt the end of this workshop, which will be <strong>held on Zoom only</strong>, you will be able to:\r\n<ul>\r\n\t<li>Collect bibliographic references from different sources.</li>\r\n\t<li>Organize your references in a neat manner.</li>\r\n\t<li>Get to know what a reference style is and how to switch it easily.</li>\r\n\t<li>Create a bibliography with a few clicks.</li>\r\n</ul>\r\n<a href=\"https://bookwhen.com/epfl_library/e/ev-sal5m-20260512093000\">Registration</a><br>\r\n<br>\r\nMore information about <a href=\"https://www.epfl.ch/campus/library/training/\">EPFL Library Teaching offer</a></div>", "image_description": "CC-BY-NC-SA EPFL Library", "creation_date": "2025-12-18T15:21:23", "last_modification_date": "2025-12-31T09:00:43", "link_label": "Registration", "link_url": "https://bookwhen.com/epfl_library/e/ev-sal5m-20260512093000", "canceled": "False", "cancel_reason": "", "place_and_room": "", "url_place_and_room": "", "url_online_room": "https://epfl.zoom.us/j/69255878305", "spoken_languages": [ "https://memento.epfl.ch/api/v1/spoken_languages/2/?format=api" ], "speaker": "EPFL Library Training Team", "organizer": "EPFL Library", "contact": "[email protected]", "is_internal": "False", "theme": "", "vulgarization": { "id": 1, "fr_label": "Tout public", "en_label": "General public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/119092/", "category": { "id": 15, "code": "FORM", "fr_label": "Formations internes", "en_label": "Internal trainings", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/1/?format=api", "https://memento.epfl.ch/api/v1/mementos/3/?format=api", "https://memento.epfl.ch/api/v1/mementos/5/?format=api", "https://memento.epfl.ch/api/v1/mementos/6/?format=api", "https://memento.epfl.ch/api/v1/mementos/8/?format=api", "https://memento.epfl.ch/api/v1/mementos/145/?format=api", "https://memento.epfl.ch/api/v1/mementos/275/?format=api", "https://memento.epfl.ch/api/v1/mementos/27/?format=api" ] } ] }
