Results 21 to 30 of about 3,599,285 (203)

The effectiveness of early lens extraction with intraocular lens implantation for the treatment of primary angle-closure glaucoma (EAGLE): study protocol for a randomized controlled trial [PDF]

open access: yes, 2011
Glaucoma is the leading cause of irreversible blindness. Although primary open-angle glaucoma is more common, primary angle-closure glaucoma (PACG) is more likely to result in irreversible blindness.
Burr, JM   +82 more
core   +2 more sources

Stress intensity factors of partially compressed centrally cracked disk with frictional crack surfaces

open access: yesMaterials Research Express, 2023
This work analytically calculates mixed-mode I/II stress intensity factors for an inclined central frictional crack in a Brazilian disc partially compressed with a uniform pressure. Wide-range controlling parameters are invoked.
A S Fayed, Mohammad M I Hammouda
doaj   +1 more source

Interseismic re-strengthening and stabilization of carbonate faults by "non-Dieterich" healing under hydrothermal conditions [PDF]

open access: yes, 2015
Friction experiments, consisting of a "velocity stepping" stage, a "slide-hold-slide" (SHS) stage and a second "velocity stepping" stage, have been performed to study the frictional healing behavior of carbonate fault gouge, and the effects of healing on
Chen, Jianye   +4 more
core   +2 more sources

Incident Open-Angle Glaucoma and Ocular Perfusion Pressure [PDF]

open access: yesInvestigative Opthalmology & Visual Science, 2011
The purpose of this letter is to provide corrections to a recent paper from the Rotterdam Eye Study,1 which evaluated the relationship between incident open-angle glaucoma (OAG) and ocular perfusion pressure (OPP). After adjustment for intraocular pressure (IOP), the researchers failed to find significant associations with OPP, concluding that the ...
M Cristina, Leske   +3 more
openaire   +2 more sources

Experimental analysis of the pressure–velocity correlations of external unsteady flow over rocket launchers [PDF]

open access: yes, 2013
Based on simultaneous wall pressure and velocity measurements, the aerodynamic load of a launcher body model is investigated. Two different configurations are considered in order to study the influence of geometrical artifacts on the after body flow and ...
DRUAULT, Philippe   +7 more
core   +1 more source

Study the Effect of Extrusion Speed and Die Angle on Relative Extrusion Pressure of Aluminum Alloy AA6061

open access: yesTikrit Journal of Engineering Sciences, 2022
Theoretical and experimental study of die angle, and extrusion speed effect on relative extrusion pressure of annealed AA6061 aluminum alloy have been carried out in this research.
Farouk M. Mahdi   +2 more
doaj   +1 more source

Kinematic synthesis, analysis and conditions of the motion transmission in clutch-free presses at the idle mode

open access: yesОмский научный вестник
The article proposes a refined two-stage method for synthesizing a third-class lever mechanism for the implementation of the idle operation of a clutch-free mechanical press, which guarantees the assembly of this mechanism at full angle of rotation of ...
V. G. Khomchenko, E. G. Kholkin
doaj   +1 more source

Method to calculate active earth pressure considering soil arching effect under nonlimit state of clay

open access: yesYantu gongcheng xuebao, 2020
By taking the limited range of clay behind the retaining wall as the research object, considering soil arching effect under non-limit state, and adopting the angle of the fracture surface obtained by the plastic upper limit theory and the variation law ...
XU Ri-qing 1, 2, XU Ye-bin 1, 2, CHENG Kang 1, 2, FENG Su-yang 1, 2, SHEN Shuo 1, 2
doaj   +1 more source

Nocturnal blood pressure in primary open‐angle glaucoma [PDF]

open access: yesActa Ophthalmologica, 2015
AbstractPurposeTo evaluate the nocturnal blood pressure (BP) dipping‐pattern in patients with manifest primary open‐angle glaucoma (POAG) and to find possible associations with the severity of visual field damage.MethodsA number of 314 patients suffering from POAG were consecutively enrolled in this cross‐sectional hospital‐based study.
Karin R, Pillunat   +8 more
openaire   +2 more sources

Tooth Profile Construction Method with Double Pressure Angles for High Performance Gear Pumps

open access: yesJixie chuandong, 2023
In order to achieve high comprehensive performance for external gear pumps, a tooth profile construction method with working pressure angles greater than non-working pressure angles is invented. From parameters analysis of tooth profiles without undercut
Li Deling
doaj  

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