Results 261 to 270 of about 44,664 (309)

Monitoring of Caffeine Consumption Effect on Skin Blood Properties by Diffuse Reflectance Spectroscopy.

Physiol Res
Milanic M, Hren R, Stergar J, Simoncic U.   +3 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Diffuse reflection (intensity reflectance model)

Proceedings 1992 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2003
An intensity reflectance model is proposed for diffuse reflection originating from subsurface multiple scattering within inhomogeneous dielectric materials. One of the most common assumptions in computer vision from inhomogeneous dielectrics is Lambertian.
openaire   +1 more source

Specular Reflection and Diffuse Reflectance Spectroscopy of Soils

Applied Spectroscopy, 2005
Studies on the occurrence and effects of specular reflection in mid-infrared spectra of soils have shown that distortions due to specular reflection occur for both organic (humic acid) and non-organic fractions (carbonates, silica, ashed fraction of soil). The results explain why the spectra of CaCO 3
James B, Reeves, Barry A, Francis, Stephen K, Hamilton   +2 more
openaire   +2 more sources

Extended diffuse reflection model for reflectance estimation

ACM SIGGRAPH 2007 posters, 2007
Reflectance properties play an important roll in generating realistic images and a lot of research has been done to determine the reflectance of real objects from images[Sato et al. 1997]. In the process of the estimation, the Lambertian model is commonly used to estimate the diffuse reflection of real objects.
Masashi Baba, Junya Hiramatsu, Masayuki Mukunoki, Naoki Asada   +3 more
openaire   +1 more source

Influences Of Surface Reflection On Diffuse Reflectance Measurements

SPIE Proceedings, 1989
Abstract When the diffuse reflectance of a compact, i.e. non-particulate solid sample is measured, regular reflection at the surface cannot be avoided: external reflection occurs when the sample is irradiated, and internal reflection occurs when radiation emerges from the sample.
E.H. Korte, H. Staat
openaire   +1 more source

Diffuse-reflectance spectroscopy in the infrared

Talanta, 1982
The theory, and the problems encountered in the development of diffuse-reflectance spectroscopy in the infrared region as an analytical technique, are reviewed. The introduction of Fourier-transform infrared spectrometers has eliminated the difficulty of detecting small scattered intensities, and diffuse-reflectance measurement is now a routine method.
H, Maulhardt, D, Kunath
openaire   +2 more sources

Diffusion Reflection

Journal of Dental Research, 2014
Intraoperative detection of residual disease in oral cancer may reduce the high rate of recurrences. The aim of the present study was to evaluate the detection sensitivity of diffusion reflection (DR) measurements of bioconjugated gold nanorods (GNRs) to cancerous sites in a rat model of oral squamous cell carcinoma.
D, Fixler, R, Ankri, I, Kaplan, I, Novikov, A, Hirshberg   +4 more
openaire   +2 more sources

The Complexity of Diffuse Reflections in a Simple Polygon

2006
The complexity of the visibility region formed by a point light source after k diffuse reflections in a simple n-sided polygon is O(n9), which is the first result polynomial in n, with no dependence on k. This bound is an exponential improvement over the previous bound of O(n$^{\rm 2\lceil ({\it k}+1)/2 \rceil +1}$) due to Prasad et al.[8].
Boris Aronov, Alan R. Davis, John Iacono, Albert Siu Cheong Yu   +3 more
openaire   +2 more sources

Diffuse reflectivity of selenium

Materials Research Bulletin, 1967
Abstract Diffuse reflectance spectra measured for powdered specimens of monoclinic, amorphous and hexagonal selenium in the region 0.2μ to 2.0μ are compared and discussed in relation to the known absorption spectra of selenium in single crystal, amorphous bulk, vapor and solute forms. In all forms, the Se:Se bond is found to be of dominant importance.
V. Prosser, H.K. Henisch
openaire   +1 more source

Toward Quantitative Diffuse Reflectance: Diffuse Reflectance Without Specular Impurity.

SPIE Proceedings, 1985
Diffuse reflectance has become one of the simplest technics available to the researcher for the FT-IR analysis of powdered samples with a minimum of sample preparation. However, it is still not used widely as a quantitative tool. Papers have appeared in the literature suggesting that diffuse reflectance can indeed be used quantitatively l, but more ...
openaire   +1 more source