Results 131 to 140 of about 342,349 (349)

Uncorrected refractive error [PDF]

open access: yesBritish Journal of Ophthalmology, 2006
We need to act now to eliminate preventable blindness by the year 2020 In 1997, the World Health Organization set itself an ambitious goal to eliminate avoidable blindness in the world by 2020, with one of the five main priorities being refractive errors.1,2 A recent review of the impact of Vision 2020 on preventable blindness, other than uncorrected ...
openaire   +2 more sources

Understanding and Addressing the Performance Asymmetry Issue in Semitransparent Laminated Organic Photovoltaic Devices

open access: yesAdvanced Functional Materials, EarlyView.
This work addresses the challenge of current–voltage asymmetry in scalable laminated semitransparent organic photovoltaics (OPVs) for indoor applications. Vertical stratification of materials is shown to create an energy barrier, leading to performance differences under different illumination directions.
Gulzada Beket   +15 more
wiley   +1 more source

Studies of Relation Between Turbidity and Refractive Indeks of Bottled Water in the Area of Banda Aceh by Using Interferometer Murty Method [PDF]

open access: yes, 2012
Bottled water is clean water ready to drink quickly without cooking however, it is not all of the bottled water have a good quality. The quality of water can be observed from the optical properties of water, such as clarity and refractive index.
Idris, N. (Nasrullah)   +2 more
core  

Prevalence and causes of blindness and visual impairment in Muyuka: a rural health district in South West Province, Cameroon.

open access: yes, 2006
AIM: To estimate the prevalence and causes of blindness and visual impairment in the population aged 40 years and over in Muyuka, a rural district in the South West Province of Cameroon.
Befidi-Mengue, R   +4 more
core   +2 more sources

Transmembrane Activation of Catalysis and Protein Refolding in Synthetic Cells by Enzymes and Nanozymes

open access: yesAdvanced Functional Materials, EarlyView.
Synthetic cells are engineered herein to respond to an external chemical messenger by the activation of intracellular catalysis. The chemical messenger molecules are catalytically generated by an extracellular enzyme or a mineral surface, whereas the intracellular catalysis emerges via direct enzyme activation or via protein refolding.
Dante G. Andersen   +5 more
wiley   +1 more source

Vat Photopolymerization of High Molecular Weight Polymer Latexes with Pseudothermoplastic Properties for Recyclability

open access: yesAdvanced Functional Materials, EarlyView.
A photocurable latex system enables high‐resolution vat photopolymerization of water‐dispersed thermoplastics, yielding pseudothermoplastic materials with recyclability. The formulation permits precise control over mechanical properties and supports reprocessing through conventional and extrusion‐based methods. Compatibility with two‐photon 3D printing
Jon Ayestaran   +12 more
wiley   +1 more source

Autonomous Orbit Determination Using Epoch-Differenced Gravity Gradients and Starlight Refraction [PDF]

open access: yesarXiv, 2017
Autonomous orbit determination via integration of epoch-differenced gravity gradients and starlight refraction is proposed in this paper for low-Earth-orbiting satellites operating in GPS-denied environments. The starlight refrac-tion can compensate for the significant along-track position error using solely gravity gradients and benefit from the ...
arxiv  

The Association of Central corneal thickness with Intra-ocular Pressure and Refractive Error in a Nigerian Population [PDF]

open access: yes, 2008
The purpose of this study was to determine the variation of central corneal thickness (CCT) with intraocular pressure (IOP) and spherical equivalent refractive error.
Iyamu, Eghosasere, Memeh, Misan
core   +1 more source

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