Results 181 to 190 of about 6,327 (210)

Using wavelet analysis to examine bark microrelief

Trees, 2013
An improved quantification of variations in bark microrelief is presented that uses wavelets on a circular domain from data acquired using the LaserBark™ automated tree measurement system. An important metric of canopy structure, bark microrelief affects both the hydrology and biogeochemistry of forests.
Legates, David R., Levia, Delphis F., Van Stan, John T., Velasco Herrera, Victor M.   +3 more
openaire   +2 more sources

Profilometric characterization of DOEs with continuous microrelief

SPIE Proceedings, 2008
Methodology of local characterization of continuous-relief diffractive optical elements has been discussed. The local profile depth can be evaluated using "approximated depth" defined without taking a profile near diffractive zone boundaries into account. Several methods to estimate the approximated depth have been offered.
V. P. Korolkov, S. V. Ostapenko, R. V. Shimansky   +2 more
openaire   +1 more source

Diffractive microrelief design for waveguiding beam control

SPIE Proceedings, 2004
Introduction of diffractive optical elements (DOEs) opened the possibilty to control amplitude-phase distribution in the cross-section of laser beam. In fact, by use of DOE one can form the beam with pregiven behaviour during propagation through waveguide medium.
Vladimir S. Pavelyev, S. V. Karpeev, Victor A. Soifer, Michael R. Duparre, Barbara Luedge   +4 more
openaire   +1 more source

The Surface of the Skin — The Microrelief

1993
The surface of a body is by definition its outer part which limits it in any direction. More importantly, it is the visible covering of the body. This simple fact has considerable sociological importance, which immediately justifies the interest that researchers have taken in studying the skin for the past 10 years or so.
J. L. Leveque, P. Corcuff
openaire   +1 more source

Rewritable Microrelief Formation on Photoresponsive Hydrogel Layers

Chemistry of Materials, 2007
The quick photoresponse of thin hydrogel layers composed of thermoresponsive poly(N-isopropylacrylamide) with an acrylated spirobenzopyran chromophore incorporated in the polymer backbone is reported. The instant formation of microrelief on a thin hydrogel layer is demonstrated by means of micropatterned light irradiation.
András Szilágyi, Kimio Sumaru, Shinji Sugiura, Toshiyuki Takagi, Toshio Shinbo, Miklós Zrínyi, Toshiyuki Kanamori   +6 more
openaire   +1 more source

The Spatial Dependence of Soil Surface Microrelief

2006
Surface microtopography of tilled soils is subject to spatial and temporal changes. The objective of this study was evaluate the spatial dependence of point elevation data on two cultivated soils located at Northwest Spain. Sixty-six microrelief data sets were obtained on bare plots. Each data set consisted of 4624 point elevations on a 20 mm grid. The
E. Vidal Vàzquez, M. M. Taboada Castro
openaire   +1 more source

Age-Related Changes of the Human Skin Surface Microrelief

Gerontology, 1990
In the present study we describe an original semi-automated image analysis method to quantitate the changes of the geometric properties of cutaneous microrelief with age. The skin surface is composed of very fine lines intersecting each other and forming polygons.
E, Vörös, C, Robert, A M, Robert
openaire   +2 more sources

Langmuir-Blodgett films on substrates with microrelief

2008
10. Hearn J, Wilkinson MC, Goodall AR (1981) Adv Colloid Interface Sci 14:173 11. Somasundaran P, Kulkarni RD (1973) J Colloid Interface Sci 45:591 12. Wnek WJ, Gidaspow D, Wasan DT (1975) J Colloid Interface Sci 50:609 13. Chowdiah P, Wasan DT, Gidaspow D (1981) A1ChE J 27:975 14. Fairhurst D (1990) Polym Mater Sci Eng 62:57 15.
V. V. Safronov, E. I. Givargizov
openaire   +1 more source

Design of surface microrelief with selective radiative properties

International Journal of Heat and Mass Transfer, 1994
The radiative properties of a material can be modified by its surface microrelief. We show that if the typical length of the surface roughness is smaller than a fraction of wavelength, the roughness can be treated as a homogeneous equivalent layer. Using this model and standard optimization techniques, we have developed an algorithm for the design of ...
Sentenac, A., Greffet, J.-J.
openaire   +2 more sources

THE BATHYMETRY AND MICRORELIEF OF FALSE BAY

Transactions of the Royal Society of South Africa, 1970
Summary The paper describes the shape, dimensions and coastline of False Bay and gives the source and accuracy of the data from which a chart was drawn to establish the morphology of the sea-bed of the bay. It goes on to describe the various outstanding features of the bottom, pointing out the overall evenness of the gradients in a N/S direction and ...
openaire   +1 more source