Results 101 to 110 of about 139,141 (292)

Exemplaire Pascal

Les Dossiers du GRIHL
The famous pensée on examples (Sellier 454) usually puzzles the reader with the false symmetry of these propositions: “When one wishes to demonstrate a general principle, one must provide the specific rule for a particular case.
Éric Méchoulan
doaj   +1 more source

Topological Spin‐Texture Transitions in van der Waals Magnets Revealed by X‐Ray Fourier Transform Holography

Advanced Materials, EarlyView.
Applied here for the first time to a 2D material, high‐resolution synchrotron x‐ray Fourier transform holography directly images topological spin textures in Fe3GeTe2. Combined with atomistic tight‐binding simulations including itinerant electrons and Rashba spin‐orbit coupling, the approach reveals labyrinth, skyrmion, and mixed phases, and uncovers ...
Sourav Chowdhury, Soumyaranjan Dash, Michael Schneider, Christopher Klose, Chithra H. Sharma, Lisa‐Marie Kern, Tim A. Butcher, Josefin Fuchs, Santanu Pakhira, Samik DuttaGupta, Takashi Taniguchi, Kenji Watanabe, Sujit Das, Sanjeev Kumar, Bastian Pfau, Amir‐Abbas Haghighirad, Moritz Hoesch   +16 more
wiley   +1 more source

Understanding and Enforcing Opacity [PDF]

, 2015
—This paper puts a spotlight on the specification and enforcement of opacity, a security policy for protecting sensitive properties of system behavior.
Schoepe, Daniel, Daniel Schoepe, Schoepe, Daniel,, Sabelfeld, Andrei,, Andrei Sabelfeld, Sabelfeld, Andrei   +5 more
core   +1 more source

Inductively Expandable Supraparticles as Microscopic Force Generators for Remote Mechanical Actuation

Advanced Materials, EarlyView.
This study demonstrates the combination of magnetic nanoparticles and functional blowing agents into supraparticles. Upon induction heating, they actuate via rapid gas generation or extensive volume expansion. These supraparticles lift up to 25 000 times their own mass and rapidly open cured epoxy resins, providing a versatile strategy for fast micron ...
Leoni Luthardt, Stephan Müssig, Robert Luxenhofer, Karl Mandel   +3 more
wiley   +1 more source

Alkali lines at extreme densities and their impact on giant planet interior structure

Astronomy & Astrophysics
Context. Alkali lines, in particular the sodium Na D (5891 Å, 5897 Å) and potassium K D (7667 Å, 7701 Å) resonance doublets, are dominant opacity sources in giant planets over a wide range of temperatures (≳1000 K).
Siebenaler L., Allard N. F., van Dijk E. A., Miguel Y.   +3 more
doaj   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source

Scatological Humour and the Absent Anthropology of Privacy

Surveillance & Society
This article addresses the puzzle of scatological humour among privacy advocates. Drawing on ethnographic work in Britain in 2014 and in Germany between 2019–2023, it advances a consideration of the phenomenon as a form of “boundary play” (Nippert-Eng ...
Vita Peacock
doaj   +1 more source

A Thermoreversible Gelation Pathway to Plant Cuticle‐Inspired Biopolymer Aerogel Monoliths Based on Network‐Spherulitic Crystal Assemblies

Advanced Materials, EarlyView.
To address functionality limitations in plant‐based and industrially compostable polymer aerogels, this work introduces bio‐inspired aerogels with broadened functionality. Inspired by functional plant tissues, lightweight biopolymer aerogels based on exclusively stereocomplex crystals are fabricated, featuring hierarchically macro‐/meso‐porous ...
Anthony V. Tuccitto, Zeineb Ben Rejeb, Rafaela Aguiar, Nello D. Sansone, Sumaiya Farzana, Isaac Ali, Jun Uk Lee, Daniel J. Davidson, Ailsa K. Edward, Chul B. Park, Patrick C. Lee   +10 more
wiley   +1 more source

Directional Confinement Governed Ion Transport for Efficient Actuation

Advanced Materials, EarlyView.
Structural anisotropy provides an effective means to regulate ion transport in polymer electrolytes. Directionally aligned channels formed by freeze‐drying provide continuous pathways for ion migration, enhancing ion mobility and simultaneously improving the strain and blocking force of ionic actuators.
Yufei Zhang, Qiuchun Lu, Adit Gupta, Sen Wang, Xueyang Wang, Jian Yu, Xuanyi Hu, Daniel Mandler, Pooi See Lee   +8 more
wiley   +1 more source

Estranged Intimacies: An Anticolonial Poetics of Silence in the Poetry of Raquel Salas Rivera and Ana-Maurine Lara

Latin American Literary Review
: This article analyzes two recent poetry collections by queer Caribbean writers and probes them for what they can reveal about silence as a combined affective, aesthetic and political strategy.
Marena Fleites Lear
doaj   +1 more source