The effects of titanium dioxide coatings on light-derived heating and transdermal heat transfer in bovine skin

The effects of titanium dioxide coatings of bovine hides on light absorption and transdermal transfer of light-derived heat were investigated. Four hair-on rug hides from Holstein cattle were purchased. Twelve samples about 20 cm on a side were cut from each hide; nine from the black-colored areas,...

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Bibliographic Details
Published in:International journal of biometeorology 2017-11, Vol.61 (11), p.1913-1917
Main Authors: Bartle, S. J., Thomson, D.U., Gehring, R., van der Merwe, D.
Format: Article
Language:English
Subjects:
Absorption
Animal Physiology
Animals
Biological and Medical Physics
Biophysics
Bovidae
Cattle
Coating effects
Coatings
Color
Dermis
Earth and Environmental Science
Electromagnetic absorption
Energy
Energy absorption
Environment
Environmental Health
Heat transfer
Hides
Hot Temperature
Light
Light absorption
Light sources
Luminous intensity
Maximum temperatures
Meteorology
Models, Biological
Original Paper
Plant Physiology
Reflectance
Skin
Skin - drug effects
Skin - metabolism
Skin Absorption
Sprays
Stratum corneum
Titanium
Titanium - pharmacology
Titanium dioxide
Wavelength
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Summary:The effects of titanium dioxide coatings of bovine hides on light absorption and transdermal transfer of light-derived heat were investigated. Four hair-on rug hides from Holstein cattle were purchased. Twelve samples about 20 cm on a side were cut from each hide; nine from the black-colored areas, and three from the white areas. Samples were randomized and assigned to four coating treatments: (1) white hide with no coating (White), (2) black hide with no coating (Black), (3) black hide with 50% coating (Mid), and (4) black hide with 100% coating (High). Coatings were applied to the black hide samples using a hand sprayer. Lux measurements were taken using a modified lux meter at three light intensities generated with a broad spectrum, cold halogen light source. Reflectance over a wavelength range of 380 to 900 nm was measured using a spectroradiometer. The transdermal transfer of heat derived from absorbed light was measured by applying a broad spectrum, cold halogen light source to the stratum corneum (coated) side of the sample and recording the temperature of the dermis-side using a thermal camera for 10 min at 30-s intervals. At the high light level, the White, Black, Mid, and High coating treatments had different ( P  
ISSN:0020-7128
1432-1254
DOI:10.1007/s00484-017-1378-1