3 d multi species biofilm models
This presentation is the property of its rightful owner.
Sponsored Links
1 / 8

3-D Multi-Species Biofilm Models PowerPoint PPT Presentation


  • 78 Views
  • Uploaded on
  • Presentation posted in: General

3-D Multi-Species Biofilm Models. F. Gao, X. Zhong, H. La, S. Krone, L. Forney. Model based on nutrient diffusion and energy allocation. (1). (3). (2). nutrient diffusion. Nutrient concentration in bulk liquid is set to be constant and normalized to 1.0;

Download Presentation

3-D Multi-Species Biofilm Models

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


3 d multi species biofilm models

3-D Multi-Species Biofilm Models

F. Gao, X. Zhong, H. La, S. Krone, L. Forney


Model based on nutrient diffusion and energy allocation

Model based on nutrient diffusion and energy allocation

(1)

(3)

(2)


Nutrient diffusion

nutrient diffusion

  • Nutrient concentration in bulk liquid is set to be constant and normalized to 1.0;

  • Nutrient diffuses vertically through biofilm, from top down;

  • A site obtain nutrients diffusing from a cone-shaped region above the site

a site


Birth rate

Birth rate

1

Maintenance

2

Energy

Nutrient

Stress response

ATP

Conversion

coefficient

3

Growth

  • Allows multiple nutrients

  • Metabolism

  • Effects of environment on growth rate


Placement of offspring

Placement of offspring

  • Growth is suppressed if all neighboring sites are occupied

  • Daughter cell placed at vacant direct neighbor chosen at random

  • If no direct neighbors available, 2nd direct neighbors considered

6 direct nbrs 26 2nd direct nbrs

6 direct nbrs 26 2nd direct nbrs


Death rate

Death rate

  • Death rate increased if a cell fails to get enough energy for maintenance and stress response

  • Death rate is proportional to the gap between the energy demand & actual energy available


Collapse

Collapse

  • Maximum thickness

  • Self regulation

before

after


Simulations

simulations

  • 3 species: 2 aerobic and 1 anaerobic

  • 2 aerobic species

  • 2 species: 1 aerobic and 1 anaerobic

  • randomly initialized


  • Login