Results 1 to 10 of about 10,158 (99)

On the growth dynamics of the cyanobacterium Anabaena sp. PCC 7938 in Martian regolith

open access: yesnpj Microgravity, 2022
The sustainability of crewed infrastructures on Mars will depend on their abilities to produce consumables on site. These abilities may be supported by diazotrophic, rock-leaching cyanobacteria: from resources naturally available on Mars, they could feed
Tiago P. Ramalho   +5 more
doaj   +1 more source

The Evolution of Micromechanical Properties for Zr-Based Metallic Glass Induced by Laser Shock Peening

open access: yesFrontiers in Materials, 2021
The micromechanical properties of Zr-based metallic glass (MG) induced by laser shock peening (LSP) were studied through the use of nanoindentation. The serrations in representative load-displacement (P-h) curves exhibited a transformation from stairstep-
Yansen Li   +8 more
doaj   +1 more source

Asymptotic symmetries of scalar electrodynamics and of the abelian Higgs model in Hamiltonian formulation

open access: yesJournal of High Energy Physics, 2021
We investigate the asymptotic symmetry group of a scalar field minimally-coupled to an abelian gauge field using the Hamiltonian formulation. This extends previous work by Henneaux and Troessaert on the pure electromagnetic case.
Roberto Tanzi, Domenico Giulini
doaj   +1 more source

Subwavelength Chiral Spiral Acoustic Metamaterials for a Robust Topological Acoustic Insulator

open access: yesApplied Sciences, 2022
Topological acoustic insulators enable sound waves to transmit along the surface without backscattering, which builds a new pathway towards sound wave control.
Tao Yang   +5 more
doaj   +1 more source

Evaluation of Radiation Response in CoCrFeCuNi High-Entropy Alloys

open access: yesEntropy, 2018
CoCrFeCuNi high-entropy alloys (HEAs) prepared by arc melting were irradiated with a 100 keV He+ ion beam. Volume swelling and hardening induced by irradiation were evaluated.
Yang Wang   +5 more
doaj   +1 more source

Microfluidic Synthesis, Doping Strategy, and Optoelectronic Applications of Nanostructured Halide Perovskite Materials

open access: yesMicromachines, 2022
Halide perovskites are increasingly exploited as semiconducting materials in diverse optoelectronic applications, including light emitters, photodetectors, and solar cells.
Shuangyang Zou   +3 more
doaj   +1 more source

Asymptotic symmetries of Yang-Mills fields in Hamiltonian formulation

open access: yesJournal of High Energy Physics, 2020
We investigate the asymptotic symmetry group of the free SU(N )-Yang-Mills theory using the Hamiltonian formalism. We closely follow the strategy of Henneaux and Troessaert who successfully applied the Hamiltonian formalism to the case of gravity and ...
Roberto Tanzi, Domenico Giulini
doaj   +1 more source

Direct mechanical exposure initiates hepatocyte proliferation

open access: yesJHEP Reports, 2023
Background & Aims: Liver paracrine signaling from liver sinusoid endothelial cells to hepatocytes in response to mechanical stimuli is crucial in highly coordinated liver regeneration.
Wang Li   +12 more
doaj   +1 more source

Gravity-Vector Induces Mechanical Remodeling of rMSCs via Combined Substrate Stiffness and Orientation

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
Distinct physical factors originating from the cellular microenvironment are crucial to the biological homeostasis of stem cells. While substrate stiffness and orientation are known to regulate the mechanical remodeling and fate decision of mesenchymal ...
Chen Zhang   +15 more
doaj   +1 more source

Flow-enhanced priming of hESCs through H2B acetylation and chromatin decondensation

open access: yesStem Cell Research & Therapy, 2019
Background Distinct mechanical stimuli are known to manipulate the behaviors of embryonic stem cells (ESCs). Fundamental rationale of how ESCs respond to mechanical forces and the potential biological effects remain elusive.
Jiawen Wang   +7 more
doaj   +1 more source

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