Results 21 to 30 of about 501,931 (318)
Assembly of Natively Synthesized Dual Chromophores Into Functional Actinorhodopsin
Frontiers in Microbiology, 2021 Microbial rhodopsin is a simple solar energy-capturing molecule compared to the complex photosynthesis apparatus. Light-driven proton pumping across the cell membrane is a crucial mechanism underlying microbial energy production. Actinobacteria is one of
Kimleng Chuon +8 more
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Mathematical Biosciences and Engineering, 2021 The purpose of this manuscript was to design a better method for recovery from rhegmatogenous retinal detachment (RRD) surgery. We attempted to achieve this by designing a helmet that can manipulate intraocular magnetic nanoparticles (MNPs) and create a ...
Evan Parker +6 more
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IEEE Transactions on Biomedical Engineering, 2012 Retinal prosthesis has been translated from the laboratory to the clinic over the past two decades. Currently, two devices have regulatory approval for the treatment of retinitis pigmentosa. These devices provide partial sight restoration and patients use this improved vision in their everyday lives.
James D, Weiland, Mark S, Humayun
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Uptake and metabolism of retinol (vitamin A) in the isolated perfused rat liver
Journal of Lipid Research, 1965 The isolated perfused liver was employed to study various aspects of retinol-C14 metabolism. The rate of uptake of retinol, retinal, retinoic acid, and retinol acetate was rapid (first-order rate constant, k = 0.12–0.16 min−1) during the first 3–10 min ...
Richard D. Zachman, James Allen Olson
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romanian journal of ophthalmology, 2020 Retinal migraine is usually defined by transitory attacks of fully reversible monocular visual loss, mostly with aura. An accurate diagnostic can be completed based upon the International Classification of Headache Disorders-2 (ICHD-2) criteria. In view of this, we summarized some clinical features, treatment principles, complications, prognosis and ...
Bogdan Marius, Istrate +2 more
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Journal of Photochemistry and Photobiology B: Biology, 2001 The retina represents a paradox, in that, while light and oxygen are essential for vision, these conditions also favour the formation of reactive oxygen species leading to photochemical damage to the retina. Such light damage seems to be multi-factorial and is dependent on the photoreactivity of a variety of chromophores (e.g., vitamin A metabolites ...
Boulton, Mike +2 more
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Comparison of the Fixation Effects of Six Composite Fixatives on Retinal Tissue of Golden Hamsters
Shiyan dongwu yu bijiao yixueObjective To compare the effects of six composite fixatives on paraffin sections of golden hamster retinal tissue, and to optimize the fixation methods for retinal tissue paraffin sections of golden hamsters.
WU Haifeng +4 more
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A Systematic Review and Meta-Analysis of Retinal Microvascular Features in Alzheimer's Disease
Frontiers in Aging Neuroscience, 2021 Objective: The aim of this meta-analysis was to investigate retinal microvascular features in patients with Alzheimer's disease (AD) using optical coherence tomography angiography (OCTA).Methods: PubMed, Cochrane Library, Embase, and Web of Science ...
Qifang Jin +5 more
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Purification and properties of carotene 15,15′-dioxygenase of rabbit intestine
Journal of Lipid Research, 1972 Carotene 15,15′-dioxygenase, which oxidizes carotenoids to retinal, has been purified up to 200-fold from rabbit intestine by ammonium sulfate fractionation, heat treatment, and acetone precipitation.
M.R. Lakshmanan +2 more
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Interactive Blood Vessel Segmentation from Retinal Fundus Image Based on Canny Edge Detector
Sensors, 2021 Optometrists, ophthalmologists, orthoptists, and other trained medical professionals use fundus photography to monitor the progression of certain eye conditions or diseases. Segmentation of the vessel tree is an essential process of retinal analysis.
Alexander Ze Hwan Ooi +8 more
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