Results 81 to 90 of about 14,333 (240)

Broadband lightweight flat lenses for longwave-infrared imaging

open access: yes, 2019
We experimentally demonstrate imaging in the longwave-infrared (LWIR) spectral band (8um to 12um) using a single polymer flat lens based upon multi-level diffractive optics.
Banerji, Sourangsu   +5 more
core  

Segmented coronagraph design and analysis (SCDA): an initial design study of apodized vortex coronagraphs [PDF]

open access: yes, 2017
The segmented coronagraph design and analysis (SCDA) study is a coordinated effort, led by Stuart Shaklan (JPL) and supported by NASA's Exoplanet Exploration Program (ExEP), to provide efficient coronagraph design concepts for exoplanet imaging with ...
Jewell, Jeffrey   +4 more
core   +1 more source

Surprise and the singular plural

open access: yesAmerican Ethnologist, EarlyView.
Abstract Bodymind diversity, disability scholars argue, contributes to community and to ideals of human flourishing. Phenomenologists like Nancy and Arendt, meanwhile, foreground our human pluralism. But what does it mean to inhabit (and invent) a plural “we” across significant bodily difference? And why is the experience of surprise important to it? A
Cheryl Mattingly
wiley   +1 more source

A review of angle kappa and multifocal intraocular lenses and their effect on visual outcomes

open access: yesActa Ophthalmologica, EarlyView.
Abstract Although most patients are satisfied with their vision after multifocal intraocular lens (IOL) implantation, dissatisfaction has been reported for various reasons, including poor visual outcomes and visual disturbances. Many published reports hypothesise that preoperative angle kappa may be an associated factor in patient dissatisfaction ...
Thomas Kohnen   +2 more
wiley   +1 more source

Preverbal visual assessment for screening cerebral visual impairment: Diagnostic accuracy and clinical utility

open access: yesDevelopmental Medicine &Child Neurology, EarlyView.
Abstract Aim To evaluate the relationship between Preverbal Visual Assessment (PreViAs) results and cerebral visual impairment (CVI) diagnosis. Method This single‐center retrospective chart review included children who completed a CVI interdisciplinary clinic or occupational therapy vision evaluation between May 2018 and May 2023 and had a completed ...
Karen L. Harpster   +5 more
wiley   +1 more source

Collaborative development of diffraction-limited beamline optical systems at US DOE light sources [PDF]

open access: yes, 2019
An ongoing collaboration among four US Department of Energy (DOE) National Laboratories has demonstrated key technology prototypes and software modeling tools required for new high-coherent flux beamline optical systems. New free electron laser (FEL) and
Assoufid, L   +17 more
core  

Neonates born at term with periventricular haemorrhagic infarction: Risk factors and clinical presentation

open access: yesDevelopmental Medicine &Child Neurology, EarlyView.
This case series describes infants born near term with periventricular hemorrhagic infarction (PVHI), highlighting seizures as a common early symptom. Neonatal complications during delivery and pro‐thrombotic genetic mutations were slightly more common. MRI‐classified involvement was predominantly in the caudate vein territory.
Aleksandra Zaykova   +6 more
wiley   +1 more source

Micro-optic lens for data storage [PDF]

open access: yes
A new type of microlens for data storage applications that has improved off-axis performance is described. The lens consists of a micro Fresnel pattern on a curved substrate. The radius of the substrate is equal to the focal length of the lens.
Erwin, J. Kevin   +4 more
core   +1 more source

Zebrafish models of developmental epileptic encephalopathy accurately reflect clinical electrographic biomarkers

open access: yesEpilepsia, EarlyView.
Abstract Objective Developmental epileptic encephalopathies (DEEs) are epilepsy conditions characterized by significant severity and treatment challenges. Spectral components of the encephalogram (EEG) may provide a valuable biomarker of epileptic severity.
Paige Whyte‐Fagundes   +3 more
wiley   +1 more source

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