Results 161 to 170 of about 433,027 (302)

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Allied Ophthalmic Personnel: Backbone of Aravind's Eye Care and Social Mission. [PDF]

open access: yesEye (Lond)
Narang P   +6 more
europepmc   +1 more source

Electrically Readable Lateral Flow Assay Using Organic Transistors for Diagnostic Applications

open access: yesAdvanced Materials, EarlyView.
Electrolyte‐gated organic field‐effect transistors (EGOFETs) are integrated with lateral flow (LF) paper fluidics to create a reusable, portable, and low‐cost point‐of‐care (PoC) diagnostic test. The devices are validated for Human Immunoglobulin G detection, achieving high sensitivity (0.1 fm), selectivity, and reproducibility with rapid results in 20–
María Jesús Ortiz‐Aguayo   +4 more
wiley   +1 more source

Helping older people get the eye care they need

open access: yes, 2008
Despite being more affected by visual impairment and blindness than any other population group, older people are the group least likely to seek help when faced with eye problems or a deterioration of their vision.
Henry Nkumbe
core  

Factors that influence eye care utilization in Nigeria: a systematic review. [PDF]

open access: yesBMC Public Health
Maduakolam AI   +3 more
europepmc   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

open access: yesAdvanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha   +10 more
wiley   +1 more source

Delivering refractive error services: primary eye care centres and outreach

open access: yes, 2007
Addressing refractive errors, the second major cause of preventable blindness, is now a priority for eye care programmes.Although a simple pair of spectacles will correct refractive error, there exists a high prevalence of uncorrected refractive error ...
Dhivya Ravilla, Kovin Naidoo
core  

Pattern of Uveitis in a Secondary Eye Care Center at Panipat, Haryana. [PDF]

open access: yesClin Ophthalmol
Kritika   +4 more
europepmc   +1 more source

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

open access: yesAdvanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti   +12 more
wiley   +1 more source

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