Results 101 to 110 of about 2,497,137 (295)

Determinants of the frequency of contact lens wear

open access: yes, 2013
Objectives\ud \ud To characterize and discover the determinants of the frequency of wear (FOW) of contact lenses.\ud \ud Methods \ud \ud Survey forms were sent to contact lens fitters in up to 40 countries between January and March every year for 5 ...
Morgan, Philip B.   +3 more
core   +1 more source

Binary Analysis and Period Study of the Long-period, High-mass-ratio Contact Binary KIC 7766185

open access: yesThe Astronomical Journal
We present an in-depth photometric and spectroscopic study of the contact binary KIC 7766185. Spectroscopic observations were conducted on the Mayall 4 m telescope at Kitt Peak National Observatory and used to extract radial velocities.
Conor M. Larsen, Andrej Prša
doaj   +1 more source

Photoelectric Observations and Analysis of the Contact Binary W UMa [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2001
The unpublished photoelectric observations of the contact binary W UMa in ultraviolet, blue, and yellow bandpasses made on four nights during the observing seasons from April, 1984 to May, 1985 were presented.
Chun-Hwey Kim   +2 more
doaj  

New Photometric Investigation of the Solar-Type Shallow-Contact Binary HH Bootis

open access: yesAdvances in Astronomy, 2019
The short-period solar-type contact binary HH Boo was monitored photometrically for about 8 years. It is found that the CCD light curves in the B, V, R, and I bands obtained in 2010 are symmetric, while the multicolor light curves observed in 2011 and ...
Jia-jia He, Jing-jing Wang
doaj   +1 more source

Electrically Induced Phase Transition and Synaptic Functionality in MoTe2/Graphene Memristors

open access: yesAdvanced Functional Materials, EarlyView.
An electrically induced reversible 2H ↔ 1T′ phase transition is demonstrated in a vertical Au/Ti/MoTe2/graphene memristor with a laterally contacted graphene electrode. Resistive switching proceeds through a compositionally invariant amorphous/2H ↔ amorphous/1T′ transformation, in which a self‐formed amorphous MoTe2 interfacial region is proposed to ...
Chien‐Hua Wang   +7 more
wiley   +1 more source

HL Aurigae: A near-contact binary system

open access: yes, 1996
. Photoelectric observations of HL Aur were carried out with the 60 cm reflector of Beijing Astronomical Observatory in 1990 and 1994, and the rst photoelectric BV light curves were obtained along with a newly derived ephemeris.
D. S. Zhai, R. X. Zhang, M. J. Fang
core   +1 more source

Basic physical properties of the low-temperature contact binary system V781 Tau and the near-contact binary system V836 Cyg [PDF]

open access: yes, 2005
We present a detailed photometric study of the low-temperature contact binary V781 Tau, and the near-contact binary V836 Cyg. We have combined the parameters obtained from the light-curve analysis with those found by the spectral studies and we have ...
Kalomeni, Belinda   +7 more
core   +1 more source

Designing Vanadium‐Based Oxide Electrocatalysts for Water Splitting: Experimental and Mechanistic Insights with Machine Learning

open access: yesAdvanced Functional Materials, EarlyView.
This review establishes structure‐property‐mechanism relationships across six modification strategies for V‐based oxide water‐splitting electrocatalysts: lattice engineering, heteroatom doping, interface engineering, carbon‐based hybridization, morphology engineering, and surface reconstruction and pre‐catalyst design, where dissolution is reframed as ...
Youness El Issmaeli   +4 more
wiley   +1 more source

Ultrathin Amphipathic Dual‐Polymer Networks: Unlocking Hyper‐Permeable CO2 Capture via Solvent‐Mediated Poly(Ethylene Oxide) Amorphization

open access: yesAdvanced Functional Materials, EarlyView.
Hydrophilic PEO‐copolymers and hydrophobic PDMS are physically integrated via a compatibilizing solvent into an amphipathic dual‐polymer network with versatile interfacial affinity and completely amorphized PEO segments for hyper‐permeable CO2 transport.
Ji Wu   +9 more
wiley   +1 more source

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