Results 41 to 50 of about 295,737 (299)

The margin is where everything starts and everything ends . A. Dasilva O. Speaks to the country through Rádio Caos

open access: yesTravessias, 2020
In the mid-1980s, Porto began to open to the cultural, musical, and aesthetic change announced by (post)-modernism. Resistance - and the search for the new - also began to make itself felt through radio programmes, fanzines, concerts, and bulletins ...
Paula Guerra
doaj  

Two concepts of a lie: Václav Havel on living in a communist regime

open access: yesFilosofický časopis, 2022
According to Václav Havel’s famous essay The Power of powerless life within a lie is at the core of the communist regime in Czechoslovakia. Life within a lie is characteristic for the great majority of people and is contrasted with life within the truth ...
Krása, Ondřej
doaj   +1 more source

Dynamically Actuated Reconfigurable Topographical Surface Enables Active Control of Implant‐Associated Infections

open access: yesAdvanced Functional Materials, EarlyView.
A dynamically actuated reconfigurable topographical surface (DARTS) integrates contact‐mediated bactericidal nanotopography with programmable mechanical actuation to actively disrupt bacterial biofilms. Dynamic surface reconfiguration enhances bacterial killing and suppresses implant‐associated infections in vivo, providing a new strategy for active ...
Mohammad Asadi Tokmedash   +4 more
wiley   +1 more source

The Effect of Hydrophilic Headgroup Chemistry on Peptoid‐Directed Mineralization of CaCO3

open access: yesAdvanced Functional Materials, EarlyView.
Amphiphilic peptoids alter the pathway and outcome of calcium carbonate crystallization, which progresses through amorphous calcium carbonate (ACC) to vaterite to calcite rhombs in the absence of peptoids. In contrast, amine‐terminated peptoids produce vaterite disks and carboxyl‐terminated peptoids produce calcite mesocrystals.
Biao Jin   +5 more
wiley   +1 more source

Rebel Underground (1965) [PDF]

open access: yes, 1965
The Rebel Underground stressed racial segregation and states\u27 rights. The anonymously, irregularly published paper typically attacked James Meredith, Russell Barrett, James Silver, the federal government, Civil Rights groups, Communism and the Daily ...
University of Mississippi. Rebel Underground
core   +1 more source

Monolithically 3D‐Printed Spectral‐Spatial Meta‐Authenticators

open access: yesAdvanced Materials, EarlyView.
A single height map printed in a low‐index resin by two‐photon lithography encodes multiple visible wavelengths in one metasurface without any polarization optics. A fabrication‐aware optimization folds the printable height levels into the design, so the device is printed as optimized.
Cherry Park   +3 more
wiley   +1 more source

Moisture‐Adaptive Triboelectric Materials and Platforms: Design Strategies, Performance Enhancement, and Applications in Energy Harvesting and Wearable Electronics

open access: yesAdvanced Materials Technologies, EarlyView.
This review summarizes moisture‐adaptive strategies that enable triboelectric nanogenerators (TENGs) to operate across diverse moisture conditions. It examines moisture‐management methods, including exclusion, directional transport, removal, and utilization, with charge‐regulation approaches based on interfacial, dielectric, and structural engineering.
Junzhe Gan   +4 more
wiley   +1 more source

Rebel Underground (12 January 1963) [PDF]

open access: yes, 1963
The Rebel Underground stressed racial segregation and states\u27 rights. The anonymously, irregularly published paper typically attacked James Meredith, Russell Barrett, James Silver, the federal government, Civil Rights groups, Communism and the Daily ...
University of Mississippi. Rebel Underground
core   +1 more source

Ultrasonic Quality Assurance at Magnesia Shotcrete Sealing Structures

open access: yesSensors, 2022
Engineered barriers are a key element to enable safe nuclear waste disposal. One method currently under research for their construction is magnesia concrete applied in a shotcrete procedure.
Vera Lay   +5 more
doaj   +1 more source

Asymmetry in Skipping Enhances Viability Against Control Input Noise

open access: yesAdvanced Robotics Research, EarlyView.
Quadruped animals use asymmetric galloping gaits at high speeds, yet the functional role of this asymmetry remains unclear. This study shows that left–right asymmetry in touchdown angles enhances robustness to control noise. Using a simple two‐legged locomotion model and viability theory, it demonstrates that asymmetric skipping substantially enlarges ...
Yuichi Ambe, Alvin So, Shinya Aoi
wiley   +1 more source

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