A model for allometric scaling of mammalian metabolism with ambient heat loss

Handle URI:
http://hdl.handle.net/10754/595535
Title:
A model for allometric scaling of mammalian metabolism with ambient heat loss
Authors:
Kwak, Ho Sang; Im, Hong G. ( 0000-0001-7080-1266 ) ; Shim, Eun Bo
Abstract:
Background Allometric scaling, which represents the dependence of biological trait or process relates on body size, is a long-standing subject in biological science. However, there has been no study to consider heat loss to the ambient and an insulation layer representing mammalian skin and fur for the derivation of the scaling law of metabolism. Methods A simple heat transfer model is proposed to analyze the allometry of mammalian metabolism. The present model extends existing studies by incorporating various external heat transfer parameters and additional insulation layers. The model equations were solved numerically and by an analytic heat balance approach. Results A general observation is that the present heat transfer model predicted the 2/3 surface scaling law, which is primarily attributed to the dependence of the surface area on the body mass. External heat transfer effects introduced deviations in the scaling law, mainly due to natural convection heat transfer which becomes more prominent at smaller mass. These deviations resulted in a slight modification of the scaling exponent to a value smaller than 2/3. Conclusion The finding that additional radiative heat loss and the consideration of an outer insulation fur layer attenuate these deviation effects and render the scaling law closer to 2/3 provides in silico evidence for a functional impact of heat transfer mode on the allometric scaling law in mammalian metabolism.
KAUST Department:
Clean Combustion Research Center
Citation:
A model for allometric scaling of mammalian metabolism with ambient heat loss 2016 Integrative Medicine Research
Publisher:
Elsevier BV
Journal:
Integrative Medicine Research
Issue Date:
2-Feb-2016
DOI:
10.1016/j.imr.2016.01.002
Type:
Article
ISSN:
22134220
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S2213422016000044
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorKwak, Ho Sangen
dc.contributor.authorIm, Hong G.en
dc.contributor.authorShim, Eun Boen
dc.date.accessioned2016-02-03T10:31:07Zen
dc.date.available2016-02-03T10:31:07Zen
dc.date.issued2016-02-02en
dc.identifier.citationA model for allometric scaling of mammalian metabolism with ambient heat loss 2016 Integrative Medicine Researchen
dc.identifier.issn22134220en
dc.identifier.doi10.1016/j.imr.2016.01.002en
dc.identifier.urihttp://hdl.handle.net/10754/595535en
dc.description.abstractBackground Allometric scaling, which represents the dependence of biological trait or process relates on body size, is a long-standing subject in biological science. However, there has been no study to consider heat loss to the ambient and an insulation layer representing mammalian skin and fur for the derivation of the scaling law of metabolism. Methods A simple heat transfer model is proposed to analyze the allometry of mammalian metabolism. The present model extends existing studies by incorporating various external heat transfer parameters and additional insulation layers. The model equations were solved numerically and by an analytic heat balance approach. Results A general observation is that the present heat transfer model predicted the 2/3 surface scaling law, which is primarily attributed to the dependence of the surface area on the body mass. External heat transfer effects introduced deviations in the scaling law, mainly due to natural convection heat transfer which becomes more prominent at smaller mass. These deviations resulted in a slight modification of the scaling exponent to a value smaller than 2/3. Conclusion The finding that additional radiative heat loss and the consideration of an outer insulation fur layer attenuate these deviation effects and render the scaling law closer to 2/3 provides in silico evidence for a functional impact of heat transfer mode on the allometric scaling law in mammalian metabolism.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S2213422016000044en
dc.rightsArchived with thanks to Integrative Medicine Research, Under a Creative Commons license, http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectScaling law of metabolismen
dc.subjectBody heat transferen
dc.subjectTheoretical analysisen
dc.titleA model for allometric scaling of mammalian metabolism with ambient heat lossen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalIntegrative Medicine Researchen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Mechanical System Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi, Gyeongbuk 730-701, Republic of Koreaen
dc.contributor.institutionDepartment of Mechanical and Biomedical Engineering, Kangwon National University, Hyoja-dong, Chuncheon, Kangwon-do 200-701, Republic of Koreaen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorIm, Hong G.en
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