Results 71 to 80 of about 192,968 (237)

On the relationship of shock waves to flares and coronal mass ejections

open access: yes, 2011
Context: Metric type II bursts are the most direct diagnostic of shock waves in the solar corona. Aims: There are two main competing views about the origin of coronal shocks: that they originate in either blast waves ignited by the pressure pulse of a ...
A. Hillaris   +66 more
core   +1 more source

Machine Learning‐Driven Grayscale Digital Light Processing for Mechanically Robust 3D‐Printed Gradient Materials

open access: yesAdvanced Materials, EarlyView.
A machine learning‐driven grayscale digital light processing (g‐DLP) platform integrates optimization of gradient structures and photocurable resin materials with extensive tunability. The optimized gradient structure, fabricated from developed polyurethane acrylates with enhanced damping and customizable stiffness, reduces stress concentration ...
Jisoo Nam, Boxin Chen, Miso Kim
wiley   +1 more source

Photothermally Powered 3D Microgels Mechanically Regulate Mesenchymal Stem Cells Under Anisotropic Force

open access: yesAdvanced Materials, EarlyView.
The photothermally powered microgel is designed to mechanically train mesenchymal stem cells using spatially patterned exogenous forces in three‐dimensional (3D) workspaces. When microgels are activated selectively via photothermal actuation, locally confined tens of nN forces are exerted on cells, triggering osteogenic differentiation in encapsulated ...
Chen Wang   +7 more
wiley   +1 more source

From Carbon Nitrides to COFs: Opportunities and Prospects in Photocatalytic CO2 Reduction

open access: yesAdvanced Materials, EarlyView.
To underscore the potential of polymeric photocatalysts for CO2 photoreduction—from carbon nitrides to covalent organic frameworks—the table of contents graphic presents recent breakthroughs in the design of light‐responsive organic photocatalysts.
Wei Che   +10 more
wiley   +1 more source

Detached Eddy Simulation of Restricted Shock Separated flow in a Thrust Optimized Contoured nozzle

open access: yes, 2009
Detached Eddy Simulation of restricted shock separated (RSS) flow has been performed to understand the physics of complex cap-shock pattern, which is the key cause of separated flow transition in the rocket nozzles. High-order shock-capturing numerical schemes are necessary to understand this complex flow.
Shams, Afaque   +2 more
openaire   +1 more source

Radio emission models of Colliding-Wind Binary Systems

open access: yes, 2003
We present calculations of the spatial and spectral distribution of the radio emission from a wide WR+OB colliding-wind binary system based on high-resolution hydrodynamical simulations and solutions to the radiative transfer equation.
Benaglia   +53 more
core   +1 more source

Multifunctional Bamboo Based Materials Empowered by Multiscale Hierarchical Structures—A Critical Review

open access: yesAdvanced Materials, EarlyView.
This review summarizes the latest progress in transforming renewable bamboo resources into high‐value functional materials. It emphasizes how to leverage bamboo's multiscale hierarchical structures to realize innovative applications in energy, construction, environment, and medicine, providing key insights for developing high‐performance bio‐based ...
Yuxiang Huang   +13 more
wiley   +1 more source

Pyrotechnic shock at the orbiter/external tank forward attachment [PDF]

open access: yes
During the initial certification test of the forward structural attachment of the space shuttle orbiter to the external tank, pyrotechnic shock from actuation of the separation device resulted in structural failure of the thermal protection tiles ...
Grissom, D. S.   +2 more
core   +1 more source

Tubular coupling having frangible connecting means [PDF]

open access: yes, 1969
Stage separation using remote control release of joint with explosive ...
Mayo, J. W.
core   +1 more source

De‐Saturation of Single‐Atom Copper Catalysts for Accelerating Propargylic Substitution Reactions

open access: yesAdvanced Materials, EarlyView.
De‐saturation of copper‐based single‐atom catalysts (De‐sat SACs) are realized by a KOH‐mediated Joule thermal shock strategy. Benefiting from the under‐saturation coordination environment of single‐atom Cu center, De‐sat Cu SACs exhibit remarkable catalytic activity in propargylic substitution reactions, tolerating a broad range of nucleophiles (N–, C–
Qilong Cai   +12 more
wiley   +1 more source

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