Sökning: "reaction diffusion equation"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden reaction diffusion equation.

  1. 1. Image-driven simulation of brain tumors using a reaction-diffusion mathematical model

    Master-uppsats, Linköpings universitet/Avdelningen för medicinsk teknik

    Författare :Kristos Qiqi; [2023]
    Nyckelord :brain tumor; cancer; mathematical model; simulation; magnetic resonance images; hjärntumör; cancer; matematisk model; simulering; magnetresonanstomografi bilder;

    Sammanfattning : Brain tumors pose a big challenge in the field of neuro-oncology. Gliomas are the largest subgroup. Magnetic resonance imaging is a non-invasive tool for detecting and characterizing these tumors. Mathematical models, such as the reaction-diffusion equation, can be used for understanding the intricate behavior of gliomas. LÄS MER

  3. 2. Stability and Controllability of Diffusion Models

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Anton Mörtberg; [2023]
    Nyckelord :Turing Reaction and Diffusion model; System stability; Kronecker product; System controllability;

    Sammanfattning : Alan Turing explored how patterns emerged in embryos. The modelsexplained by Turing describe how two morphogens interact with eachother and develop certain patterns though different conditions. LÄS MER

  4. 3. The effect of material properties on PEM fuel cell catalysts on durable oxidation reduction activity

    Master-uppsats, KTH/Kemiteknik

    Författare :Xiaoling Jiang; [2023]
    Nyckelord :PEM fuel cell; catalyst; ORR activity; particle size; degradation; PEM-bränslecell; katalysator; syrgasreduktionsaktivitet; partikelstorlek; åldring;

    Sammanfattning : I detta examensarbete utforskas påverkan av partikelstorleken hos Pt-katalysatorer på kolbärare på syrereduktionen i polymerelektrolytmembran (PEM)-bränsleceller. Den elektrokemiskt aktiva ytarean, aktiviteten för syrereduktion och tillhörande degraderingshastigheter för de undersökta katalysatorerna beräknas och jämförs. LÄS MER

  5. 4. 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

  7. 5. Modelling Local pH Values and Ion Distributions near Gold Nanoparticles

    Master-uppsats, Umeå universitet/Kemiska institutionen

    Författare :Lisa Tete; [2021]
    Nyckelord :;

    Sammanfattning : Corrosion is the sum of processes by which an element, commonly a metal, wears away, deteriorates [1]–[3]. One of these processes uses the principle of electrochemistry as a basis, being the transfer of electrons between one chemical reaction and the element that undergoes corrosion [4], [5]. LÄS MER