نتایج جستجو برای: corneoscleral rim
تعداد نتایج: 7972 فیلتر نتایج به سال:
Robustness of quantum operations or controls is important to build reliable devices. The robustness-infidelity measure (${\text{RIM}}_{p}$) introduced statistically quantify in a single the robustness and fidelity controller as $p\mathrm{th}$ order Wasserstein distance between distribution under any uncertainty an ideal distribution. ${\text{RIM}}_{p}$ root raw moment infidelity Using metrizati...
Human corneoscleral explants were maintained for several weeks in defined, serum-free media. Trabecular cell vitality, as judged by vital stain exclusion, is high for at least one month. Trabecular ultrastructure, as compared to that of fresh eyes, first shows minor cellular and extracellular matrix degradation after 3 weeks in culture. The biosynthetic profiles of trabecular glycosaminoglycans...
BACKGROUND CORNEAS NEEDED FOR KERATOPLASTY CAN BE HARVESTED USING TWO TECHNIQUES: whole globe enucleation and in situ excision of the corneoscleral disc. This study evaluates the rate of microbial contamination of the donor cornea organ culture medium according to the method of retrieval. METHODS All donor corneas of our cornea bank received between January 1, 2001 and December 31, 2009 put i...
INTRODUCTION The causes leading to dislocation of the natural lenses are different involving injuries, hereditary diseases and spontaneous dislocation. Spontaneous dislocation of a transparent natural lens is extremely rare, especially dislocation of the anterior eye chamber. We report a case of spontaneous dislocation of the transparent natural lens to the anterior eye chamber in a patient who...
PURPOSE This study tested the hypothesis that intraocular pressure (IOP) elevations, induced by controlled increase of intraocular volume, are correlated with the biomechanical responses of the posterior sclera. METHODS Porcine globes were tested within 48 hours postmortem. The first group of globes (n = 11) was infused with 15 μL of phosphate-buffered saline at three different rates to inves...
PURPOSE To determine the reproducibility and accuracy of ultrasonographic (US) measurements of distances between the corneoscleral limbus and the insertion site of the medial (MR) or lateral rectus (LR) muscle compared with intraoperative measurements in patients with strabismus. METHODS One eye in each of 17 patients with postoperative secondary strabismus caused by over- or undercorrected e...
The microstructural organization and composition of the corneoscleral shell (CSS) determine the biomechanical behavior of the eye, and are important in diseases such as glaucoma and myopia. However, limited techniques can assess these properties globally, non-invasively and quantitatively. In this study, we hypothesized that multi-modal magnetic resonance imaging (MRI) can reveal the effects of...
Incidence of upper-limb overuse injuries among the manual wheelchair population has been found to be associated with hand-rim loading characteristics such as impact and peak loading on the hand rim during propulsion. One proposed method to reduce impact and peak loading is the use of a compliant hand rim, one that can displace relative to the wheel when impacted by the hand. A Variable Complian...
This paper deals with the design and performance analysis of double stator axial flux permanent magnet generators for rim-driven marine current turbines (MCT). Indeed for submarine applications, drive train reliability is a key feature to reduce maintenance requirements. Rim-driven direct-drive multi-stator generators can therefore be a very interesting solution to improve this reliability. In ...
The frequency, distribution, and histological characteristics of vertebral rim lesions have been studied at D11 and L4 in 117 post-mortem spines in subjects aged 13-96 years. Only one lesion was found in patients less than 30 years, but thereafter the frequency increased with age. At least one rim was affected in the majority of patients greater than or equal to 50 years. They were found more f...
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