Results 51 to 60 of about 1,055,858 (237)

Elastic–Plastic Modeling and Experimental Characterization of Granular Jamming Actuators

open access: yesAdvanced Engineering Materials, EarlyView.
Granular jamming enables rapid switching between soft and rigid mechanical states. Here, a reduced‐order elastic‐perfectly‐plastic beam framework captures pressure‐dependent loading, unloading, residual deformation, and hysteresis in jammed beams, while matching three‐point bending experiments across materials and geometries. The framework links design
Saheli Patel   +2 more
wiley   +1 more source

The philosophy behind quantum gravity [PDF]

open access: yes, 2006
This paper investigates some of the philosophical and conceptual issues raised by the search for a quantum theory of gravity. It is critically discussed whether such a theory is necessary in the first place, and how much would be accomplished if it is ...
Zinkernagel, Henrik   +2 more
core   +1 more source

The human brain in space: a meta-analysis of neuroimaging evidence

open access: yesFrontiers in Psychology
IntroductionHuman space exploration is progressing into an unprecedented era characterized by extended-duration missions, the establishment of permanent lunar bases, and planned crewed voyages to Mars.
Scaramelli Anna   +2 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Simulated microgravity affects directional growth of pollen tubes in candidate space crops

open access: yesFrontiers in Plant Science, 2023
BackgroundLong-term space missions will necessarily require producing viable seeds to be used for plant cultivation over time under altered gravity conditions.
Maurizio Iovane   +3 more
doaj   +1 more source

Programmable Soft Actuator with Multi‐Responsiveness Based on Conductive MOF‐Liquid Crystal Polymer Composite

open access: yesAdvanced Functional Materials, EarlyView.
A sequential dual‐alignment strategy independently programs the orientation of conductive metal‐organic framework (c‐MOF) microrods and liquid crystals within a composite film. This approach creates an asymmetric bilayer structure that enables precise, multi‐responsive actuation.
Taegyun Hong   +5 more
wiley   +1 more source

Nucleolar proteins change in altered gravity [PDF]

open access: yesJournal of Applied Biomedicine, 2007
Nucleolin is a major highly phosphorylated nucleolar protein involved in the regulation of r-chromatin condensation/expansion and rDNA transcription as well as in rRNA processing. The nucleolar protein homologous to the mammalian nucleolin and to the onion nucleolin-like protein NopA100, was detected in the nuclear soluble protein fraction, and in the ...
Sobol, M.A.   +3 more
openaire   +2 more sources

Spacetime and the Philosophical Challenge of Quantum Gravity [PDF]

open access: yes, 2001
We survey some philosophical aspects of the search for a quantum theory of gravity, emphasising how quantum gravity throws into doubt the treatment of spacetime common to the two `ingredient theories' (quantum theory and general relativity), as a 4 ...
Butterfield, Jeremy   +3 more
core   +1 more source

Microscale Patterning of Ultrahigh‐Viscosity Metallic‐Polymer Composites via Embedded Droplet Writing

open access: yesAdvanced Functional Materials, EarlyView.
A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon   +4 more
wiley   +1 more source

Stage-specific sensitivity and the attribution of altered-gravity responses in Drosophila melanogaster: a critical appraisal of spaceflight and ground-based platforms

open access: yesFrontiers in Space Technologies
Drosophila melanogaster has flown on rockets and spacecraft since 1947 and is one of the most widely used animals in gravitational biology, owing to its short life cycle, genetic tractability, modest hardware requirements and ability to develop and ...
Melina Florez-Cuadros   +7 more
doaj   +1 more source

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