Results 81 to 90 of about 92,261,605 (285)

Vitamin C‐Induced Photo‐Redox Threshold Enables High‐Fidelity Volumetric Printing of Collagen

Advanced Materials, EarlyView.
Tomographic volumetric printing (TVP) of native proteins is limited by uncontrolled background crosslinking. Here, vitamin C is introduced as a biocompatible redox regulator to establish a tunable nonlinear polymerization threshold response for TVP.
Bin Wang, Amelia Hasenauer, Kristian Ivkovic, Ann‐Sophie Frind, David Fercher, Marcy Zenobi‐Wong   +5 more
wiley   +1 more source

CDED-Net: Joint Segmentation of Optic Disc and Optic Cup for Glaucoma Screening

IEEE Access, 2020
Glaucoma is an eye disease that can cause loss of vision by damaging the optic nerve. It is the world's second leading cause of blindness after cataracts.
Munazza Tabassum, Tariq M. Khan, Muhammad Arsalan, Syed Saud Naqvi, Mansoor Ahmed, Hussain Ahmed Madni, Jawad Mirza   +6 more
doaj   +1 more source

The Relationship Between Cup-to-Disc Ratio and Estimated Number of Retinal Ganglion Cells [PDF]

Investigative Opthalmology & Visual Science, 2013
To investigate the relationship between cup-to-disc ratio (CDR) and estimates of retinal ganglion cell (RGC) number.This cross-sectional study included 156 healthy eyes, 53 glaucoma suspects, and 127 eyes with glaucoma. All eyes had standard automated perimetry (SAP), Cirrus SD-OCT, and stereoscopic optic disc photography within 6 months.
Andrew J, Tatham, Robert N, Weinreb, Linda M, Zangwill, Jeffrey M, Liebmann, Christopher A, Girkin, Felipe A, Medeiros   +5 more
openaire   +2 more sources

Ionic Liquid (IL) Compatibilization of Macropore‐Infused Nanocomposite Emulsion Thermosets (MINETs) for Structural Ion Transport

Advanced Materials Interfaces, EarlyView.
Macropore‐infused nanocomposite emulsion thermosets (MINETs) offer tunable multifunctionality due to their incorporation of structural resin, functional nanoparticles, and working fluid stabilized by surfactant. Here we show that if ionic liquid working fluids are introduced, structural capacitive (conductive particles) or separator (insulating ...
Bryan Llumiquinga, Iris You, Nare Cho, Madhuri Deb, Jordan C. Pierce, Kevin M. Miller, Jonathan P. Singer   +6 more
wiley   +1 more source

Optic disc topography in normal Indian eyes using spectral domain optical coherence tomography

Indian Journal of Ophthalmology, 2011
Purpose: The aim was to study optic nerve head (ONH) parameters in normal Indian eyes using spectral domain optical coherence tomography (OCT)/scanning laser ophthamoscope (SLO).
Mansoori Tarannum, Viswanath Kalluri, Balakrishna Nagalla   +2 more
doaj  

A deep learning model integrating domain-specific features for enhanced glaucoma diagnosis

BMC Medical Informatics and Decision Making
Glaucoma is a group of serious eye diseases that can cause incurable blindness. Despite the critical need for early detection, over 60% of cases remain undiagnosed, especially in less developed regions. Glaucoma diagnosis is a costly task and some models
Jie Xu, Erkang Jing, Yidong Chai
doaj   +1 more source

Photoluminescence Reshaping via Structural Confinement and Local Density of Optical States Control in Ir(III)‐Doped Biodegradable Metasurfaces

Advanced Materials Technologies, EarlyView.
Phosphorescent biodegradable metasurface showing vibronic selection and spectral photoluminescence narrowing. Anti‐correlation between experimental LDOS and measured lifetimes. ABSTRACT Metasurfaces incorporating phosphorescent emitters offer a route to engineer radiative and vibronic processes beyond chemical design.
Vincenzo Caligiuri, Andrea Smeriglio, Svetlana Siprova, Olga Favale, Francesca Leone, Roberto Termine, Debora Policastro, Alessandra Crispini, Attilio Golemme, Nicolas Godbert, Iolinda Aiello, Antonio De Luca   +11 more
wiley   +1 more source

Unlocking Terahertz Steganography: Authentication of Hidden Images in Flexible Media

Advanced Materials Technologies, EarlyView.
Hidden information in multilayered devices, such as steganographic portraits, is detected and authenticated using reflection‐mode terahertz time‐domain imaging. Image reconstruction relies on a dedicated figure‐of‐merit obtained by integrating the signal intensity over the time‐window associated with the reflection from the metallic mirror backing the ...
Tiziana Ritacco, Francesca Vittorioso, Dimitrios C. Zografopoulos, Romeo Beccherelli, Walter Fuscaldo   +4 more
wiley   +1 more source

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

Advanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun, Liang Zhang, Jianwen Zeng, Xuefeng Wang   +3 more
wiley   +1 more source

Automated volumetric evaluation of stereoscopic disc photography

, 2010
PURPOSE: To develop a fully automated algorithm (AP) to perform a volumetric measure of the optic disc using conventional stereoscopic optic nerve head (ONH) photographs, and to compare algorithm-produced parameters with manual photogrammetry (MP ...
David Mackey (14743045), Wollstein, G (15537572), Craig, JE (15485495), Ishikawa, H (15537569), Bilonick, RA (15537575), Alexander Hewitt (14739028), Schuman, JS (15537581), Kagemann, L (15537578), Xu, J (15514127)   +8 more
core   +2 more sources