Stock-Recruit Relationships and Regional Coexistence in a Lottery Competitive System: A Simulation Study

1982 ◽  
Vol 120 (2) ◽  
pp. 139-159 ◽  
Author(s):  
Peter F. Sale
Keyword(s):  
Simulation Study ◽  
Competitive System ◽  
System A

SIMULATION STUDY ON NON-HOMOGENOUS SYSTEM OF NON-INVASIVE ERT USING COMSOL MULTIPHYSICS

2015 ◽  
Vol 77 (17) ◽  
Author(s):  
Yasmin Abdul Wahab ◽  
Ruzairi Abdul Rahim ◽  
Mohd Hafiz Fazalul Rahiman ◽  
Leow Pei Ling ◽  
Suzzana Ridzuan Aw ◽  
...  
Keyword(s):  
Finite Element ◽  
Simulation Study ◽  
Direct Contact ◽  
Comsol Multiphysics ◽  
Finite Element Software ◽  
Non Invasive ◽  
System A ◽  
Process Tomography ◽  
Gas Medium ◽  
Air Medium

The non-invasive sensing technique is one of the favourite sensing techniques applied in the process tomography because it has not a direct contact with the medium of interest. The objective of this paper is to analyse the simulation of the non-homogenous system of the non-invasive ERT using finite element software; COMSOL Multiphysics. In this simulation, the liquid-air medium is chosen as the non-homogenous system. A different analysis of the non-homogenous system in term of the different position of the single air, different size of the single air and the multiple air inside the vessel were investigated in this paper. As a result, the location, size and multiple air inside the pipe will influence the output of the non-invasive ERT system. A liquid-gas medium of non-homogenous ERT system will have a good response if the air is located near the source, the size of the air is large enough and it has multiple air locations inside the pipe.

scholarly journals Chromium VI and Fluoride Competitive Adsorption on Different Soils and By-Products

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 748
Author(s):  
Ana Quintáns-Fondo ◽  
Gustavo Ferreira-Coelho ◽  
Manuel Arias-Estévez ◽  
Juan Carlos Nóvoa-Muñoz ◽  
David Fernández-Calviño ◽  
...  
Keyword(s):  
Pine Bark ◽  
Competitive System ◽  
Chromium Vi ◽  
Batch Type ◽  
System A ◽  
The Individual ◽  
Polluted Waters ◽  
By Products ◽  
Different Soils ◽  
Oak Ash

Chromium (as Cr(VI)) and fluoride (F−) are frequently found in effluents from different industrial activities. In cases where these effluents reach soil, it can play an important role in retaining those pollutants. Similarly, different byproducts could act as bio-adsorbents to directly treat polluted waters or to enhance the purging potential of soil. In this work, we used batch-type experiments to study competitive Cr(VI) and F− adsorption in two different soils and several kinds of byproducts. Both soils, as well as mussel shell, oak ash, and hemp waste showed higher adsorption for F−, while pyritic material, pine bark, and sawdust had a higher affinity for Cr(VI). Considering the binary competitive system, a clear competition between both elements in anionic form is shown, with decreases in adsorption of up to 90% for Cr(VI), and of up to 30% for F−. Adsorption results showed better fitting to Freundlich’s than to Langmuir’s model. None of the individual soils or byproducts were able to adsorbing high percentages of both pollutants simultaneously, but it could be highly improved by adding pine bark to increase Cr(VI) adsorption in soils, thus drastically reducing the risks of pollution and deleterious effects on the environment and on public health.

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