Results 181 to 190 of about 7,666,833 (354)

How to Manufacture Photonic Metamaterials

open access: yesAdvanced Materials Technologies, EarlyView.
Metamaterials boast applications such as invisibility and “hyperlenses” with resolution beyond the diffraction limit, but these applications haven’t been exploited in earnest and the market for them hasn’t grown much likely because facile and economical methods for fabricating them without defect has not emerged.
Apurba Paul, Gregory Timp
wiley   +1 more source

Dual‐Wavelength Vat Photopolymerization With Dissolvable, Recyclable Support Structures

open access: yesAdvanced Materials Technologies, EarlyView.
Selective solubility vat photopolymerization (SSVP) uses a single resin to produce dissolvable thermoplastics and insoluble thermosets in a single 3D print. Wavelength‐selective curing and thermal post‐processing provide 3D spatial control over dissolution kinetics, enabling dissolvable support structures and programmable dissolution profiles.
Nicholas S. Diaco   +7 more
wiley   +1 more source

Hypoxia-inducible factor 1 signaling drives placental aging and can provoke preterm labor

open access: gold, 2023
Erin J. Ciampa   +6 more
openalex   +1 more source

Lightweight and High‐Performance Ankle Braces Enabled by 3D Printed Metamaterial Liquid Crystal Polymer

open access: yesAdvanced Materials Technologies, EarlyView.
A flexible, lightweight ankle brace made from 3D‐printed liquid crystal polymer metamaterials offers targeted support without restricting movement. Programmable stiffness provides protection during risky motions. Biomechanical tests suggest performance comparable to commercial braces with reduced bulk, highlighting potential for broader orthotic ...
Cassi J. Henderson   +5 more
wiley   +1 more source

Labor Market Search and Optimal Retirement Policy [PDF]

open access: yes
A popular view about social security, dating back to its early days of inception, is that it is a means for young, unemployed workers to 'purchase' jobs from older, employed workers.
Casey B. Mulligan   +2 more
core   +3 more sources

Advancing All‐Day Passive Radiative Cooling Performance of 3D Anodized Aluminum Oxide Nanostructures on Aluminium

open access: yesAdvanced Optical Materials, EarlyView.
Advanced anodic aluminium oxide (AAO) nanostructures incorporate interconnections between the vertical pores, forming a 3D‐AAO nanonetwork that functions as a Bragg reflector. By varying the periodicity of the transverse channels, the light‐matter interaction can be tuneable to enhance their emissivity and passive radiative cooling performance across ...
Alba Díaz‐Lobo   +2 more
wiley   +1 more source

ANALYSIS OF THE COURSE OF LABOR IN WOMEN, THE SECOND STAGE, WHICH WAS COMPLICATED BY SHOULDER DYSTOCIA

open access: yesАкушерство, гинекология и репродукция, 2016
Purpose – analysis of the course of labor in 42 healthy primigravidas with a singleton full-term pregnancy to detect the risk of shoulder dystocia. All pregnancy came naturally. Indications for elective cesarean section was not. In 22 labor has begun its
N. A. Udovika   +2 more
doaj  

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