Results 251 to 260 of about 6,639,533 (289)

The cumulative normalised rim/disc area ratio curve

Graefe's Archive for Clinical and Experimental Ophthalmology, 1996
The assessment of the cup of the optic disc depends, among other criteria, on the disc area. A small cup in a small optic disc can indicate an advanced glaucomatous lesion, while on the other hand a large cup in a large optic disc can be normal. Therefore, a cumulative normalised rim/disc area ratio curve could help to distinguish between glaucomatous ...
Karl Ulrich Bartz-Schmidt, Peter Walter, Ralf-Dieter Hilgers   +2 more
exaly   +3 more sources

Optimizing rotating biological contactor disc area

Water Research, 1994
Abstract A method of minimizing the total active disc area required for soluble biochemical oxygen demand (SBOD) removal by a multi-stage rotating biological contactor (RBC) in which the substrate removal rate is not oxygen limited, is applied to two generalized steady-state SBOD removal models.
Ian Buchanan, Roland Leduc
exaly   +2 more sources

On the odd area of the unit disc

Israel Journal of Mathematics, 2023
Given a family \({\mathcal F}\) of measurable sets in the plane, one denotes by \(OA({\mathcal F })\) the area of the set of all points in the plane that belong to an odd number of members in \({\mathcal F}\). The infimum of \(OA({\mathcal F })\) over all families \({\mathcal F}\) consisting of an odd number of translates of a given measurable set \(B\)
openaire   +1 more source

On the Perimeter and Area of the Unit Disc

The American Mathematical Monthly, 2005
longer holds. These geometries are homogeneous but not isotropic. In this article we survey some of the most basic results on the geometry of unit discs in two-dimensional normed spaces, while adding a few results and some new proofs of our own. These results answer simple questions about the perimeter of the unit disc, its area, and the relationships ...
Carlos Álvarez Paiva, Juan, Thompson, Anthony   +1 more
openaire   +3 more sources

Correlation of the Peripapillary Atrophy Area with Optic Disc Cupping and Disc Hemorrhage

Journal of Glaucoma, 1998
To investigate the association of the peripapillary atrophy area with disc cupping area and disc hemorrhage in subjects who underwent ocular examination as part of a routine physical examination.We reviewed plain color fundus photographs taken of 12,140 eyes of 6,070 subjects as part of a routine health examination.
T, Hayakawa, K, Sugiyama, G, Tomita, K, Kawase, E, Onda, H, Shinohara, A, Tsuji, Y, Kitazawa   +7 more
openaire   +2 more sources

Optic Disc Rim Area Is Related to Disc Size in Normal Subjects

Archives of Ophthalmology, 1988
To the Editor. —We read with great interest the recent article by Caprioli and Miller. 1 The article provides muchneeded information on relationships between topographic optic disc measurements and disc size in computerized optic disc image analysis.
Y J, Hong, D H, Shin
openaire   +2 more sources

Shift in apparent contrast of disc at Secchi disc depth in coastal sea areas

Environmental Monitoring and Assessment, 2012
The relationship between Secchi disc depth and amount of suspended material in seawater varies depending on the particular marine area. To identify the cause of this dependence, we calculated the apparent contrast (C (SD)) at each Secchi disc depth in different coastal sea areas.
Hisayuki, Arakawa, Mari, Inada, Sokjin, Choi, Miho, Narita   +3 more
openaire   +2 more sources

Estimation of Lumbar Disc Areas by Means of Anthropometric Parameters

Spine, 1989
In order to standardize the results of different biomechanical studies concerning stresses on lumbar discs, it may be useful to estimate the disc dimensions of the examined subjects and to refer the stress values to a unit surface area (square centimeter).
D, Colombini, E, Occhipinti, A, Grieco, M, Faccini   +3 more
openaire   +2 more sources

Neovascularization of the outermost area of herniated lumbar intervertebral discs

Journal of Orthopaedic Science, 1999
In 64 surgically treated herniated lumbar intervertebral discs, we performed histopathological studies of neovascularization in the outermost layer of the herniated mass in various types of hernia. We obtained specimens separately from the capsule tissue covering the herniated mass and the inner tip tissue of the herniated mass for comparison ...
S, Ozaki, T, Muro, S, Ito, M, Mizushima
openaire   +2 more sources

The Influence of Lumbar Disc Height and Cross-Sectional Area on the Mechanical Response of the Disc to Physiologic Loading

Spine, 1999
The influence of lumbar disc height and cross-sectional area on the mechanical response of the disc to physiologic loading was determined using a finite element model.To identify which geometric characteristics are potentially related to motion segment mechanical response to applied load, such as flexibility, fiber stress, disc bulge, and nucleus ...
R N, Natarajan, G B, Andersson
openaire   +2 more sources