Entropy and enthalpy for triggering cutaneous erythema

Steven Jacques, Joseph T. Walsh

Research output: Contribution to journalArticle

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 languageEnglish (US)
Article number1550026
JournalJournal of Innovative Optical Health Sciences
Volume8
Issue number4
DOIs
StatePublished - Jul 25 2015

Fingerprint

Entropy
Erythema
Enthalpy
Skin
enthalpy
entropy
forearm
Denaturation
thresholds
pain
biopolymer denaturation
actuators
Forearm
Water
water
Pain
Temperature
Experiments
temperature

Keywords

  • enthalpy
  • entropy
  • erythema
  • Skin
  • thermal

ASJC Scopus subject areas

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

Cite this

Entropy and enthalpy for triggering cutaneous erythema. / Jacques, Steven; Walsh, Joseph T.

In: Journal of Innovative Optical Health Sciences, Vol. 8, No. 4, 1550026, 25.07.2015.

Research output: Contribution to journalArticle

Jacques, Steven ; Walsh, Joseph T. / Entropy and enthalpy for triggering cutaneous erythema. In: Journal of Innovative Optical Health Sciences. 2015 ; Vol. 8, No. 4.
@article{78c46a9a028e4f9bae628192db750e8e,
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.",
keywords = "enthalpy, entropy, erythema, Skin, thermal",
author = "Steven Jacques and Walsh, {Joseph T.}",
year = "2015",
month = "7",
day = "25",
doi = "10.1142/S1793545815500261",
language = "English (US)",
volume = "8",
journal = "Journal of Innovative Optical Health Sciences",
issn = "1793-5458",
publisher = "World Scientific Publishing Co. Pte Ltd",
number = "4",

}

TY - JOUR

T1 - Entropy and enthalpy for triggering cutaneous erythema

AU - Jacques, Steven

AU - Walsh, Joseph T.

PY - 2015/7/25

Y1 - 2015/7/25

N2 - 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.

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 - enthalpy

KW - entropy

KW - erythema

KW - Skin

KW - thermal

UR - http://www.scopus.com/inward/record.url?scp=84937911295&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84937911295&partnerID=8YFLogxK

U2 - 10.1142/S1793545815500261

DO - 10.1142/S1793545815500261

M3 - Article

AN - SCOPUS:84937911295

VL - 8

JO - Journal of Innovative Optical Health Sciences

JF - Journal of Innovative Optical Health Sciences

SN - 1793-5458

IS - 4

M1 - 1550026

ER -