Results 71 to 80 of about 120,222 (297)

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi   +3 more
wiley   +1 more source

Lens opacities among physicians occupationally exposed to ionizing radiation – a pilot study in Finland

open access: yesScandinavian Journal of Work, Environment & Health, 2011
OBJECTIVES: The aim of this study was to estimate the prevalence of lens opacities among physicians occupationally exposed to radiation – overall and by occupational factors – and to assess the feasibility of a large-scale study for risk assessment ...
Samy Mrena   +3 more
doaj   +1 more source

Evolution of AGB stars at varying surface C/O ratio: The crucial effect of molecular opacities [PDF]

open access: yes, 2002
This study calls attention to the importance of properly coupling the molecular opacities to the actual surface abundances of TP-AGB stars that experience the third dredge-up and/or hot-bottom burning, i.e.
Marigo, P.
core   +1 more source

Double Compton and Cyclo-Synchrotron in Super-Eddington Disks, Magnetized Coronae, and Jets [PDF]

open access: yes, 2016
We present an extension to the general relativistic radiation magnetohydrodynamic code HARMRAD to account for emission and absorption by thermal cyclo-synchrotron, double Compton, bremsstrahlung, low-temperature OPAL opacities as well as Thomson and ...
Chluba, Jens   +4 more
core   +2 more sources

Dual‐Mode Magnetic Elastomer for On‐Demand Motion and Degradation

open access: yesAdvanced Functional Materials, EarlyView.
A dual‐mode magnetic elastomer is introduced, enabling DC field‐driven programmable actuation and AC field‐driven magnetothermal degradation. GHz‐range magnetic fields generate ultrafast heating of magnetic nanoparticles that activates cleavage of the silicone elastomer matrix.
Jieun Han   +13 more
wiley   +1 more source

Determination of disease severity in COVID-19 patients using deep learning in chest X-ray images

open access: yesDiagnostic and Interventional Radiology, 2021
PURPOSEChest X-ray plays a key role in diagnosis and management of COVID-19 patients and imaging features associated with clinical elements may assist with the development or validation of automated image analysis tools. We aimed to identify associations
Maxime Blain   +18 more
doaj   +1 more source

Tuning Separator Chemistry: Improving Zn Anode Compatibility via Functionalized Chitin Nanofibers

open access: yesAdvanced Functional Materials, EarlyView.
Nanochitin derived from waste shrimp shells is used to fabricate separators for aqueous zinc batteries. By tuning the density of amine and carboxylic surface groups, water mobility at the separator interface is controlled, promoting uniform zinc deposition, suppressing dendrite growth, and enabling exceptional cycling stability exceeding 2000 h ...
Ibrahim Al Kathemi   +6 more
wiley   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

open access: yesAdvanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil   +13 more
wiley   +1 more source

Computed tomography findings in a Brazilian cohort of 48 patients with pneumonia due to coronavirus disease

open access: yesRevista da Sociedade Brasileira de Medicina Tropical, 2020
INTRODUCTION: This study was conducted to retrospectively review chest computed tomography (CT) findings in a Brazilian cohort of patients with pneumonia caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
Gabriel Madeira Werberich   +3 more
doaj   +1 more source

Updated High-temperature Opacities for the Dartmouth Stellar Evolution Program and Their Effect on the Jao Gap Location

open access: yesThe Astrophysical Journal, 2023
The Jao Gap, a 17% decrease in stellar density at M _G ∼ 10 identified in both Gaia Data Release 2 and Early Data Release 3, presents a new method to probe the interior structure of stars near the fully convective transition mass.
Thomas M. Boudreaux, Brian C. Chaboyer
doaj   +1 more source

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