منابع مشابه
Closed branches of conjunctival vessels.
NORMAL conjunctival vessels have been studied with the slit lamp by many observers, including Koeppe (1920-22), Vogt (1930-31), Graves (1934), Berliner (1943), and Meesmann (1927). The conjunctival vessels are capillaries, many of which are seen to be filled with red blood corpuscles; some of these capillaries are fairly large, but others are fine. These capillaries, containing one row of red b...
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The relation between xylem vessel age and vulnerability to cavitation of sugar maple (Acer saccharum Marsh.) was quantified by measuring the pressure required to force air across bordered pit membranes separating individual xylem vessels. We found that the bordered pit membranes of vessels located in current year xylem could withstand greater applied gas pressures (3.8 MPa) compared with border...
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An experimental study on pressure evolution during closed vessel explosions of several gaseous fuel-air mixtures was performed, at various initial pressures within 0.3-1.2 bar and ambient initial temperature. Explosion pressures and explosion times are reported for methane-, n-pentane-, n-hexane-, propene-, butene-, butadiene-, cyclohexane- and benzene-air mixtures. The explosion pressures meas...
متن کاملMeasurement of Torsional Eye Movement Using Terminal Points of Conjunctival Blood Vessels
The angle of torsional eye movement has small amplitude, a high degree of resolution and precision will be required. In the current mainstream method of obtaining the angle of torsional eye movement using an iris pattern, it has been difficult to ensure measurement with a tolerance of 1.0(degree) or less at all times due to changes in the deformation of the iris pattern. We wish to propose a me...
متن کاملA Radon Transform Based Approach for Extraction of Blood Vessels in Conjunctival Images
This paper proposes a local Radon transform-based algorithm for extraction of blood vessels in conjunctival images. This algorithm divides the image into overlapping windows and applies Radon transform to each window. Vessel direction in each window is found by detection of peak in Radon space. The proposed algorithm is capable of extracting blood vessels with a variety of widths. According to ...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1951
ISSN: 0007-1161
DOI: 10.1136/bjo.35.10.595