Results 91 to 100 of about 110,606 (256)

Polyimide‐Linked Hexaazatriphenylene‐Based Porous Organic Polymer with Multiple Redox‐Active Sites as a High‐Capacity Organic Cathode for Lithium‐Ion Batteries

open access: yesAdvanced Materials, EarlyView.
A high‐capacity polyimide‐linked porous organic polymer (HAT‐PTO) incorporating numerous redox‐active centers is synthesized via a hydrothermal reaction, delivering a high theoretical capacity of 484 mAh g−1. In situ hybridization with carboxyl‐functionalized multiwalled carbon nanotubes enhances conductivity and stability, achieving 397 mAh g−1 at C ...
Arindam Mal   +7 more
wiley   +1 more source

Lens Thickness Changes among Schoolchildren in Taiwan

open access: yes, 2010
PURPOSE. To explore the possible influence of ocular growth, refractive error and age on the crystalline lens in school- age children. METHODS. A Taiwan nationwide survey of myopia performed in 2006 was used to determine the prevalence and severity of ...
施永豐;江亭萱;林隆光   +1 more
core   +1 more source

The distribution of axial length, anterior chamber depth, lens thickness, and vitreous chamber depth in an adult population of Shahroud, Iran

open access: yesBMC Ophthalmology, 2012
Background Ocular biometric parameters can be influenced by race, ethnicity, and genetics; their differences across different populations can probably explain differences in refractive errors in these populations.
Hashemi Hassan   +6 more
doaj   +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

Role of the Recombination Zone in Organic Light‐Emitting Devices

open access: yesAdvanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Time course of corneal oxygen uptake during contact lens wear

open access: yes, 1988
We used a polarographic oxygen sensor to measure corneal oxygen uptake rates of 16 subjects during daily wear of soft contact lenses. The subjects reported for examinations on nine occasions over a 30-week lens wearing period. Corneal oxygen uptake rates
Carney, Leo G., Brennan, Noel A.
core  

Millimeter-Wave Conical Fresnel Zone Lens of Flat Dielectric Rings

open access: yes, 2014
Conical in shape Fresnel zone (CFZ) lens of flat dielectric rings is introduced and studied in this research. It is contrasted to a plane Fresnel zone (PFZ) lens, a CFZ lens of conical rings and a refractive plane-hyperbolic (PH) lens.
P. Kamburov, L.   +3 more
core   +1 more source

The Effect of Cycloplegia on the Ocular Biometric and Anterior Segment Parameters: A Cross-Sectional Study

open access: yesOphthalmology and Therapy, 2019
Introduction To evaluate the effects of cycloplegia on the biometric components and anterior segment parameters of the eye. Methods In this cross-sectional study, changes to axial length (AL), anterior chamber depth (ACD) lens thickness, anterior chamber
Hamed Momeni-Moghaddam   +6 more
doaj   +1 more source

Single‐Chromophore Homojunction Organic Solar Cells: A Path to Simplicity and Efficiency

open access: yesAdvanced Materials, EarlyView.
This perspective discusses how the intrinsic optoelectronic properties of organic semiconductors, their molecular packing in the solid‐state, and internal energetic gradients within a device can enable free‐charge carrier generation in homojunction organic solar cells.
Shaun McAnally   +2 more
wiley   +1 more source

The Assessment of Eye Lens Thickness in Cataract Patients

open access: yes, 2023
Bakalaura darbs ir uzrakstīts latviešu valodā uz 27 lapaspusēm. Tas satur 12 attēlus un 21 atsauci uz literatūras avotiem. Darba mērķis ir noskaidrot, vai pastāv sakarība starp acs lēcas biezumu centrālajā daļā un kataraktas veidu (garozas kataraktu – C,
Rimeicāne, Daniela
core  

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