[1] The paper investigates the influence of relative bend curvature on secondary flow, energy losses, and turbulence in sharp open-channel bends. These processes are important in natural streams with respect to sediment transport, the bathymetry and planimetry, mixing and spreading of pollutants, heat, oxygen, nutrients and biological species, and the conveyance capacity. Laboratory experiments...

Using the visual search method, we show that stimuli that contain curvature discontinuities (i.e., points where the second derivative along an image contour is not defined) are easily found among stimuli containing only smooth changes in curvature. Curved stimuli that lack curvature discontinuities, however, are difficult to find among distractors that have them. These results suggest that the ...

PURPOSE To correlate parameters derived from corneal deformation resulting from non-contact tonometry integrated with an ultra-high-speed (UHS) Scheimpflug camera (Oculus Corvis ST, Scheimpflug Technology; Wetzlar, Germany) with age in normal eyes from young patients. METHODS Observational, retrospective study involving one eye randomly selected from study participants, totaling 89 healthy ey...

The aim of this study is to develop a program compare directional survey models and select the most accurate. When drilling well, actual route well must be regularly checked ensure that it in agreement with planned route. This done by measuring position at constant intervals. A was established used for five methods (Minimum Curvature, Tangential, Angle Averaging, Balanced Radius Curvature) path...

Abstract In order to further improve the flight stability of explosively formed projectile, formation method tail EFP was studied based on polygonal liner. Under hexagonal charge structure, fins can be when structural parameters are matched. Through numerical simulation LS-DYNA, influence liner (curvature radius, linear thickness), height and shell thickness velocity, length-diameter ratio, com...

Recent papers have presented correlations between the radius of curvature of the anterior lens surface and anterior chamber depth (Lowe, I972), and between the anterior lens radius and the anterior and posterior corneal radius (Lowe and Clark, I973). This paper presents measurements of anterior lens radius in relation to age, lens thickness, and axial length in two series comprising 9I normal e...