Mathematics applied to Science. The use of some techniques for the study of biological phenomena. 02/04/14 Stefano Casagranda, PHD STUDENT 11/10/14.

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Presentation transcript:

Mathematics applied to Science. The use of some techniques for the study of biological phenomena. 02/04/14 Stefano Casagranda, PHD STUDENT 11/10/14

Mi presento! 11/10/ Stefano Casagranda Ingegnere Biomedico Università degli Studi di Pavia-San Francisco SU PHD Student presso INRIA - Sophia Antipolis (Institut National de Recherche en Informatique et Automatique) Team di Lavoro: BIOCORE

11/10/ Contribute to environmental protection through the development of new energy sources Design, modeling, analysis, control and optimize artificial ecosystems Mathematical methods and computational What BIOCORE does?

11/10/ Study and modeling of biological phenomena Water treatment Gene regulation Growth of microalgae What BIOCORE does?

11/10/ Study of cells and of bacteria Study of DNA, RNA and protein synthesis through mathematical models What I do?

- 6 Circadian Clock Drosophila Melanogaster 11/10/14

- 7 Circadian Clock It allows for organisms to coordinate their physiological behavior with daily and seasonal changes in the day-night cycle (Biological Clock) PERIOD GENE TIMELESS GENE 11/10/14

- 8 Case of continuous darkness Circadian Clock 11/10/14

- 9 Case of 12 hours of light – 12 hours of dark Circadian Clock LIGHT AS A INPUT! 11/10/14

- 10 A mathematical model is a model built using the language and tools of mathematics: its purpose is to better represent a real phenomenon. A model is used to make predictions on the future 'state' of a phenomenon or system It is used to help biologists and doctors to understand a particular phenomenon or to simulate experiments in a rapid manner Why is a mathematical model useful? 11/10/14

- 11 My work… 11/10/14

- 12 ????????????? My work… 11/10/14

- 13 Model of biological control: Ladybirds vs Aphids Biological purpose: fewer pesticides A simple model example 11/10/14

- 14 Aphid Substantial damage to crops They are mostly female Every day a female produces 10 children The population is growing 8 times in a week Model: Number of aphids next week = 8 X (the number of aphids this week) A simple model example 11/10/14

- 15 Ladybug Insect of the average of 5mm Induce an attitude of sympathy Predators with a considerable voracity They can kill and eat over 100 aphids per day A simple model example 11/10/14

- 16 It ‘s a prey-predator model Aphids continue to reproduce without the predator If the ladybugs do not eat the prey they are going to die If we put the two species together, the ladybugs will eat aphids A simple model example 11/10/14

- 17 A simple model example Death Predation Reproduction 11/10/14

- 18 A simple model example Number of aphids next week = Number of aphids this week + number of aphids products during the Week – number of aphids eaten during the week P(t+1) = P(t) + a x P(t) – b x P(t) x C(t) Number of ladybugs next week= Number of ladybugs this week+ number of ladybugs born because of prey – number of ladybugs death C(t+1) = P(t) + c x P(t) x C(t) - d x C(t) 11/10/14

- 19 A simple model example P’(t) = P(t) + a x P(t) – b x P(t) x C(t) C’(t) = P(t) + c x P(t) x C(t) - d x C(t) 11/10/14

- 20 Bioreactor The bioreactor is a device capable of providing an adequate environment for the growth of biological organisms. Biomass is biological material derived from living, or recently living organisms A substrate is a molecule on which an enzyme acts: subsequently, the substrate is converted into a product

Juin Bioreactor The bioreactor is a device capable of providing an adequate environment for the growth of biological organisms.

02/04/ Conclusioni La scienza è interessante!

Grazie ! Centre de recherche Sophia Antipolis - Méditerranée