Sökning: "biological pattern formation"

Hittade 5 uppsatser innehållade orden biological pattern formation.

  1. 1. Turing's model for pattern formation

    Kandidat-uppsats, KTH/Fysik

    Författare :Oskar Forsström; Oskar Falgén Nikula; [2022]
    Nyckelord :Reaction-diffusion; Turing pattern; morphogen; Grier-Meinhardt; Schnakenberg; numerical analysis; minimum energy control;

    Sammanfattning : In an attempt to describe how patterns emerge in biological systems, Alan Turing proposed a mathematical model encapsulating the properties of such processes. It details a partial differential equation governing the dynamics of two or more substances, called morphogens, reacting and diffusing in a specific manner, in turn generating what has now come to be denoted as Turing patterns. LÄS MER

  3. 2. The Effects of Patchy Connectivity on Pattern Formation in Biological Neuronal Networks

    Master-uppsats, KTH/Fysik

    Författare :Fawwaz Ahmad Arshad; [2020]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 3. Computational Stochastic Morphogenesis

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för beräkningsvetenskap

    Författare :Yakup Saygun; [2015]
    Nyckelord :computational morphogenesis; computational biology; biological pattern formation; stochastic simulations; stochastic Turing patterns; stochastic models; reaction-diffusion master equation; intrinsic noise; URDME; next subvolume method;

    Sammanfattning : Self-organizing patterns arise in a variety of ways in nature, the complex patterning observed on animal coats is such an example. It is already known that the mechanisms responsible for pattern formation starts at the developmental stage of an embryo. However, the actual process determining cell fate has been, and still is, unknown. LÄS MER

  5. 4. Evaluation of modeling ecosystem seasonality in the University of Victoria Earth System Climate Model

    Master-uppsats, Lunds universitet/Examensarbeten i biologi

    Författare :Annika Eisele; [2013]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : Abstract Investigating climate model ability to simulate ecosystem seasonality, for instance causes and dynamics of phytoplankton blooms in the North Atlantic, is of major importance, because interannual and seasonal variations in bloom timing, duration and intensity caused by anthropogenic induced global climate change, can lead to species shifts and alterations in the trophic food web and biogeochemical cycles, which otherwise may remain undetected on an annual scale. The seasonal variability of the North Atlantic spring bloom is highly related to surface pCO2 (Takahashi et al. LÄS MER

  7. 5. Within-canopy sesquiterpene ozonolysis in Amazonia

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Ana Maria Yáñez Serrano; [2011]
    Nyckelord :sesquiterpenes; ozonolysis; ozone; Amazon; oxidation; Earth and Environmental Sciences;

    Sammanfattning : Populärvetenskaplig sammanfattning: En mycket reaktiv spårgas i Amazonas. Växter släpper ut flyktiga organiska ämnen, som är mycket viktiga eftersom de släpps ut i stora mängder och påverkar tillverkningen av aerosoler, förändrar luftkvaliteten och fungerar som kommunikation mellan växter och herbivorer. LÄS MER