15 research outputs found
STRATUM CORNEUM STUDIES WITH PHOTOACOUSTIC SPECTROSCOPY
Conventional spectroscopic studies on opaque membranes are difficult to pursue because of excessive light scattering and complications arising from the specimen's surface. Recently, a new spectroscopic technique, photoacoustic spectroscopy, unlike conventional optical spectroscopy, has been demonstrated to be an informative technique amenable to spectroscopic studies of solids and membrane-like samples. We have applied photoacoustic spectroscopy to the study of hydration and maturation of newborn rat stratum corneum, and have obtained clean spectra in the 220 to 450nm region indicative of a change in thermal diffusivity with increased hydration, and biochemical changes associated with the initial maturation period
Monday evening message (August 18, 1969)
https://place.asburyseminary.edu/limiteddigitalresources/1492/thumbnail.jp
Thursday evening message (August 21, 1969)
https://place.asburyseminary.edu/limiteddigitalresources/1498/thumbnail.jp
Monday morning message (August 18, 1969)
https://place.asburyseminary.edu/limiteddigitalresources/1491/thumbnail.jp
Tuesday morning message (August 19, 1969)
https://place.asburyseminary.edu/limiteddigitalresources/1493/thumbnail.jp
Tuesday evening message (August 19, 1969)
https://place.asburyseminary.edu/limiteddigitalresources/1494/thumbnail.jp
Wednesday evening message (August 20, 1969)
https://place.asburyseminary.edu/limiteddigitalresources/1496/thumbnail.jp
Thursday morning message (August 21, 1969)
https://place.asburyseminary.edu/limiteddigitalresources/1497/thumbnail.jp