{"id":456,"date":"2013-12-01T15:06:27","date_gmt":"2013-12-01T15:06:27","guid":{"rendered":"http:\/\/toschi.phys.tue.nl\/wordpress\/?p=456"},"modified":"2015-11-03T23:00:32","modified_gmt":"2015-11-03T21:00:32","slug":"francesca-tesser","status":"publish","type":"post","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/francesca-tesser\/","title":{"rendered":"Francesca Tesser"},"content":{"rendered":"
\n

\"IMG_2391_adjust\"<\/a>Title<\/strong><\/p>\n

Population dynamics under flow<\/p>\n

Aim<\/strong><\/p>\n

Simulations and experiments on populations of organisms living in aquatic environments and growing under flow conditions.<\/p>\n

Summary<\/strong><\/p>\n

Ocean, rivers and lakes are natural environments for many living organisms. In these ecosystems they reproduce, compete for food, swim and die. The presence of a flow can have a strong effect on their dynamics both at individual and population scales. The dynamics of these systems are complicated because both transport and growth play a role. We are mainly interested in a population of individuals expanding in new territories and how the propagation speed is changed by the flow. Another question is how different species compete in such environments and, for example, how the extinction probability depends on the fluid dynamics. Population dynamics can be studied with numerical models but also experiments are performed with bacteria inside microfluidic devices. Bacteria are injected in micro-channels and observed for many days using microscopy equipment. We investigate how they colonize the channels and the way the colony propagates both upstream and downstream under flow. In order to measure these phenomena, the bacteria are modified and made fluorescent. It is possible to modify them in various ways so that they can be detected using different optical filters since they emit different colors. In this way also the competition between different growing species can be measured in space and time.<\/p>\n<\/div>\n<\/div> ","protected":false},"excerpt":{"rendered":"

Title Population dynamics under flow Aim Simulations and experiments on populations of organisms living in aquatic environments and growing under flow conditions. Summary Ocean, rivers and lakes are natural environments for many living organisms. In these ecosystems they reproduce, compete for food, swim and die. The presence of a flow can have a strong effect […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[40],"tags":[],"class_list":["post-456","post","type-post","status-publish","format-standard","hentry","category-ph-d"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6tiMI-7m","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":297,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/population-dynamics-under-flow-2\/","url_meta":{"origin":456,"position":0},"title":"Population dynamics under flow","author":"toschi","date":"June 6, 2013","format":false,"excerpt":"Various recent studies have revealed amazing phenomena in the dynamics of bacterial colonies where biology meets physics, in particular statistical physics, fluid dynamics, and (soft) con- densed matter. These biological systems reveal analogies with complex fluids (isotropic- nematic phase transitions), spinodal decomposition phenomena in physics and materials sci- ence, and\u2026","rel":"","context":"In "biological fluid mechanics"","block_context":{"text":"biological fluid mechanics","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/category\/research\/biological-fluid-mechanics\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2013\/06\/Untitled-3.jpg?fit=558%2C418&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2013\/06\/Untitled-3.jpg?fit=558%2C418&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2013\/06\/Untitled-3.jpg?fit=558%2C418&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":240,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/population-dynamics-under-flow\/","url_meta":{"origin":456,"position":1},"title":"Population dynamics under flow","author":"toschi","date":"June 5, 2013","format":false,"excerpt":"","rel":"","context":"In \"biology\"","block_context":{"text":"biology","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/tag\/biology\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":307,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/cost-action-mp0806-particles-in-turbulence\/","url_meta":{"origin":456,"position":2},"title":"COST Action MP0806 \"Particles in turbulence\"","author":"toschi","date":"June 6, 2013","format":false,"excerpt":"http:\/\/mp0806.cineca.it Memorandum of understanding Fluid turbulence is ubiquitous and so is its ability to transport particulate matter such as dust, soot or droplets. The dynamics of particles in a turbulent flow is fundamental to everyday life - examples of open scientific and technological issues include rain formation in clouds, pollution\u2026","rel":"","context":"In "projects"","block_context":{"text":"projects","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/category\/research\/projects\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":144,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/non-spherical-particles-and-aggregates-in-fluid-flows\/","url_meta":{"origin":456,"position":3},"title":"Non-Spherical Particles and Aggregates in Fluid Flows","author":"toschi","date":"December 4, 2012","format":false,"excerpt":"June 17, 2013 \u2014 June 21, 2013 Coordinators: Cristian Marchioli (Universit\u00e0 di Udine, Italy) Federico Toschi (Eindhoven University of Technology, The Netherlands) Dynamics of non-spherical particles and aggregates in fluid flow are encountered both in nature and in industrial applications. Examples for non-spherical particles include airborne solid particles or aerosols,\u2026","rel":"","context":"In "conferences"","block_context":{"text":"conferences","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/category\/conferences\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2012\/12\/Untitled-3.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2012\/12\/Untitled-3.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2012\/12\/Untitled-3.jpg?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2012\/12\/Untitled-3.jpg?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2012\/12\/Untitled-3.jpg?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":138,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/particles-in-turbulence-2013\/","url_meta":{"origin":456,"position":4},"title":"Particles in turbulence 2013","author":"toschi","date":"December 4, 2012","format":false,"excerpt":"Please register on the website July 1, 2013 \u2014 July 5, 2013 Prof. dr. Federico Toschi (Eindhoven University of Technology, Eindhoven) Prof. dr. Eberhard Bodenschatz (Max Planck Institute for Dynamics and Self-Organization, Goettingen) The transport, distribution and collisions of particles in turbulent flows is of fundamental interest, as well as\u2026","rel":"","context":"In "conferences"","block_context":{"text":"conferences","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/category\/conferences\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":480,"url":"https:\/\/toschi.phys.tue.nl\/wordpress\/kim-alards\/","url_meta":{"origin":456,"position":5},"title":"Kim Alards","author":"toschi","date":"December 1, 2013","format":false,"excerpt":"Lagrangian analysis of rotating Rayleigh-B\u00e9nard turbulence Dynamics of particles in cylindrical rotating Rayleigh-B\u00e9nard convection (RRBC) is studied using DNS, not only to understand the physics of RRBC, but also to investigate whether particles with a feedback reaction on the flow can influence the dynamics within the cell. Lagrangian statistics is\u2026","rel":"","context":"In "ph.d."","block_context":{"text":"ph.d.","link":"https:\/\/toschi.phys.tue.nl\/wordpress\/category\/students\/ph-d\/"},"img":{"alt_text":"KimAlards","src":"https:\/\/i0.wp.com\/toschi.phys.tue.nl\/wordpress\/wp-content\/uploads\/2013\/12\/KimAlards-242x300.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/posts\/456","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/comments?post=456"}],"version-history":[{"count":4,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/posts\/456\/revisions"}],"predecessor-version":[{"id":776,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/posts\/456\/revisions\/776"}],"wp:attachment":[{"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/media?parent=456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/categories?post=456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toschi.phys.tue.nl\/wordpress\/wp-json\/wp\/v2\/tags?post=456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}