Sarah Olson (Worcester Polytechnic Institute)
Sperm Navigation: from hydrodynamic interactions to parameter estimation

Wednesday March 3rd, 16.00 GMT (11.00 US East Coast; 8.00 US West Coast; 17.00 Central European time)

Abstract: Microorganisms can swim in a variety of environments, interacting with chemicals and other proteins in the fluid. In this talk, we will highlight recent computational methods and results for swimming efficiency and hydrodynamic interactions of swimmers in different fluid environments. Sperm are modeled via a centerline representation where forces are solved for using elastic rod theory. The method of regularized Stokeslets is used to solve the fluid-structure interaction where emergent swimming speeds can be compared to asymptotic analysis. In the case of fluids with extra proteins or cells that may act as friction, swimming speeds may be enhanced, and attraction may not occur. We will also highlight how parameter estimation techniques can be utilized to infer fluid and/or swimmer properties.

https://bham-ac-uk.zoom.us/j/86435365447?pwd=TEZwN2xtSEhITVpHbVJMVnBpSlpqZz09
Passcode: 969418

The seminar will be recorded and posted on the Youtube channel: https://www.youtube.com/channel/UCXgXjojxxGOzQ8FeaTCTm3Q

Rudi Schuech's talk last week is now available to watch on Youtube: https://youtu.be/JMmq9f5yAMg

El próximo 4 de MARZO a las 15H00 retomamos el ciclo de seminarios conjuntos con el CEAB, ICM, ICMAN e IIM que llevan por título "Seamposium: Dealing with new frontiers of marine research", esta vez organizado conjuntamente como IMEDEA New Frontiers webinar's series.

TÍTULO: To drown or not to drown? On the role of ecology in flood defense

PONENTE: Prof. Tjeerd J. Bouma, NIOZ - Estuarine & Delta Systems

RESUMEN: Marine ecosystem engineers are species that alter their environment and therefore interact with the forces originating from tidal currents and waves. Biophysical interactions by ecosystem engineers (e.g. vegetation like salt marshes, mangroves, seagrass, aquatic water plants, reef forming animals like oysters and mussels, and bioturbating animals living in the sea floor) can have major consequences for the functioning and development of estuarine and marine systems. Tjeerd Bouma is interested in obtaining a better understanding of ecosystem engineering as a strategy (fundamental ecology), the thresholds ecosystem engineers encounter for establishment to overcome bottle necks in ecosystem restoration, and the influence ecosystem engineers have on ecosystem functioning by altering resource fluxes, biodiversity, ecosystem resilience and landscape evolution, with management implications and specifically the opportunities this offers for the benefit of humanity generating ecosystem services like e.g. Nature Based Flood Defenses.

CUANDO: 4 de MARZO a las 15H00

YOUTUBE LIVE: https://www.youtube.com/user/ImedeaComDiv

PARA ESTUDIANTES DE PROGRAMA OFICIAL: se podrá solicitar el correspondiente "Certificado de Asistencia" justo al finalizar el seminario a través de un e-mail al responsable de los Seminarios del IMEDEA (alos@imedea.uib-csic.es) incluyendo los siguientes datos: Titulo del Seminario, Ponente, Nombre completo del Estudiante, Programa de Estudios y Universidad. No se atenderán peticiones fuera del plazo.

¡Muchas gracias por ayudar en su difusión!

Saludos,

Josep Alós

Responsable de los Seminarios IMEDEA 2021