Entropy and enthalpy for triggering cutaneous erythema

Steven L. Jacques; Joseph T. Walsh

doi:10.1142/S1793545815500261

Entropy and enthalpy for triggering cutaneous erythema

Steven L. Jacques, Joseph T. Walsh

Research output: Contribution to journal › Article › peer-review

Abstract

The molar entropy (ΔS) and molar enthalpy (ΔH) for the denaturation event that triggers cutaneous erythema was determined to be ΔS = 190 J/(mole K) and ΔH = 146.9 × 10³ J/mole. The experiment involved placing heated water against the skin of the forearm, for a range of temperatures and exposure times. Exposing the skin to 45°C for 22 s was at the threshold for producing erythema, which was similar to the threshold for a slight degree of pain.

Original language	English (US)
Article number	1550026
Journal	Journal of Innovative Optical Health Sciences
Volume	8
Issue number	4
DOIs	https://doi.org/10.1142/S1793545815500261
State	Published - Jul 25 2015
Externally published	Yes

Keywords

Skin
enthalpy
entropy
erythema
thermal

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Medicine (miscellaneous)
Atomic and Molecular Physics, and Optics
Biomedical Engineering

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10.1142/S1793545815500261

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title = "Entropy and enthalpy for triggering cutaneous erythema",

abstract = "The molar entropy (ΔS) and molar enthalpy (ΔH) for the denaturation event that triggers cutaneous erythema was determined to be ΔS = 190 J/(mole K) and ΔH = 146.9 × 103 J/mole. The experiment involved placing heated water against the skin of the forearm, for a range of temperatures and exposure times. Exposing the skin to 45°C for 22 s was at the threshold for producing erythema, which was similar to the threshold for a slight degree of pain.",

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author = "Jacques, {Steven L.} and Walsh, {Joseph T.}",

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language = "English (US)",

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AU - Walsh, Joseph T.

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AB - The molar entropy (ΔS) and molar enthalpy (ΔH) for the denaturation event that triggers cutaneous erythema was determined to be ΔS = 190 J/(mole K) and ΔH = 146.9 × 103 J/mole. The experiment involved placing heated water against the skin of the forearm, for a range of temperatures and exposure times. Exposing the skin to 45°C for 22 s was at the threshold for producing erythema, which was similar to the threshold for a slight degree of pain.

KW - Skin

KW - enthalpy

KW - entropy

KW - erythema

KW - thermal

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ER -

Entropy and enthalpy for triggering cutaneous erythema

Abstract

Keywords

ASJC Scopus subject areas

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