Results 51 to 60 of about 921,622 (398)
Inner dusty regions of protoplanetary discs -- II. Dust dynamics driven by radiation pressure and disc winds [PDF]
, 2020 We explore dust flow in the hottest parts of protoplanetary discs using the forces of gravity, gas drag and radiation pressure. Our main focus is on the optically thin regions of dusty disc, where the dust is exposed to the most extreme heating conditions and dynamical perturbations: the surface of optically thick disc and the inner dust sublimation ...
arxiv +1 more source
Retina image–based optic disc segmentation
Advances in Mechanical Engineering, 2016 The change of optic disc can be used to diagnose many eye diseases, such as glaucoma, diabetic retinopathy and macular degeneration. Moreover, retinal blood vessel pattern is unique for human beings even for identical twins. It is a highly stable pattern
Ching-Lin Wang +6 more
doaj +1 more source
Rapid grain growth in post-AGB disc systems from far-infrared and sub-millimetre photometry [PDF]
, 2020 The timescales on which astronomical dust grows remain poorly understood, with important consequences for our understanding of processes like circumstellar disk evolution and planet formation.A number of post-asymptotic giant branch stars are found to host optically thick, dust- and gas-rich circumstellar discs in Keplerian orbits.
arxiv +1 more source
Double Trouble: A Rare Case of Combined Optic Disc Pit Maculopathy and Choroidal Coloboma
Delhi Journal of Ophthalmology, 2023 Optic disc pit (ODP) is a rare congenital abnormality of the optic nerve head, which appears as a unilateral, small, oval, hypo-pigmented gray–white excavation of the optic disc, most commonly located at the temporal or infero-temporal segment of the ...
Ashok Kanakamedela +5 more
doaj +1 more source
Detection of Glaucoma by Segmenting Retinal Images and evaluating the DDLS stage [PDF]
, 2016 Automatic analysis of retina image is important screening tool for early detection of eye diseases. This paper proposes an image processing technique for the detection of stage of glaucoma. The methodology is used to segment optic disc and cup.
, Mr. Vikas Bhagwat, Prof. Milind B. Tadwalkar
core +2 more sources
A potential biomarker of cognitive impairment: The olfactory dysfunction and its genes expression
Annals of Clinical and Translational Neurology, Volume 9, Issue 12, Page 1884-1897, December 2022., 2022 Abstract Objective Accumulation evidence has reported that olfactory impairment may be an essential clinical marker and predictor of mild cognitive impairment or Alzheimer's disease. Method Participants were enrolled in the population‐based, prospective study in Fuxin county, Liaoning province, China between 2019 and 2021.
Jiayi Song +11 more
wiley +1 more source
Presumed optic disc melanocytoma in a young Nigerian: a diagnostic challenge [PDF]
, 2016 Optic disc melanocytoma (ODM) is a rare, benign, deeply pigmented ocular tumor arising from melanocytes within the optic disc or from any part of the uvea. It occurs more in dark skinned individuals and females.
Adeyemo, Adegbola O. +4 more
core +2 more sources
Effects of pregnancy on neuromyelitis optica spectrum disorder and predictors of related attacks
Annals of Clinical and Translational Neurology, Volume 9, Issue 12, Page 1918-1925, December 2022., 2022 Abstract Objective Our study aimed to investigate the influence of pregnancy on the course of neuromyelitis optica spectrum disorders (NMOSD) and to explore the independent predictors of pregnancy‐related attacks. Methods We performed a retrospective study of patients with NMOSD based on the Wingerchuk 2006 or the revised Wingerchuk 2015 criteria ...
Qin Du +7 more
wiley +1 more source
Indian Journal of Ophthalmology, 2017 Bilateral optic disc edema in a diabetic patient may be caused by diabetic papillopathy. We herein report on a patient with bilateral optic disc drusen simulating diabetic papillopathy.
Rohan Chawla +4 more
doaj +1 more source
Symmetry, 2018 Glaucoma is a group of eye diseases which can cause vision loss by damaging the optic nerve. Early glaucoma detection is key to preventing vision loss yet there is a lack of noticeable early symptoms.
Baidaa Al-Bander +5 more
semanticscholar +1 more source