Results 71 to 80 of about 71,616 (293)

Modified Newtonian dynamics (MOND)

This chapter presents Modified Newtonian Dynamics (MOND), the proposal that, below a certain acceleration scale $a_0$, dynamics departs from the Newtonian expectation. In that context, the determining factor for the emergence of apparent missing matter in galactic systems is predicted to be the acceleration, and not the mass or size of the system. MOND
Famaey, Benoit, Durakovic, Amel
openaire   +2 more sources

Tunable Bioresorbable Scaffolds With Marine Sulfated Polysaccharides for Small‐Caliber Vascular Grafts: A Multi‐Layered Strategy Combining Electrospinning and 4‐Axis Printing

Advanced Healthcare Materials, EarlyView.
A multilayered small‐caliber vascular scaffold combining electrospinning and 4‐axis printing is developed and biofunctionalized with marine sulfated polysaccharides from Holothuria tubulosa. The resulting construct exhibits enhanced hemocompatibility, tunable mechanical properties, and supports endothelial and smooth muscle cell adhesion and ...
Gabriele Obino, Alberto Sensini, Tim ten Brink, Gabriele Nieddu, Tristan Bodet, Giovanni Andrea Deiana, Martijn van Griensven, Marilena Formato, Antonio J. Lepedda, Lorenzo Moroni   +9 more
wiley   +1 more source

Distinct Acceleration Relations of Galaxies and Galaxy Clusters from Hyperconical Modified Gravity

The Astrophysical Journal
General relativity (GR) is the most successful theory of gravity, with great observational support on local scales. However, to keep GR valid over cosmic scales, some phenomena require the assumption of exotic dark matter, especially the cosmic expansion
Robert Monjo, Indranil Banik
doaj   +1 more source

Distant star clusters of the Milky Way in MOND

, 2011
We determine the mean velocity dispersion of six Galactic outer halo globular clusters, AM 1, Eridanus, Pal 3, Pal 4, Pal 15, and Arp 2 in the weak acceleration regime to test classical vs. modified Newtonian dynamics (MOND).
Angus, Angus, Angus, Baumgardt, Baumgardt, Begmann, Begmann, Bekenstein, Bekenstein, Bosch, Brada, Ciotti, Clowe, Famaey, Famaey, Gentile, Gentile, Governato, H. Baumgardt, H. Haghi, Haghi, Haghi, Harris, Hasani Zonoozi, Jordi, Klypin, Kroupa, Küpper, Londrillo, Malekjani, Metz, Mieske, Milgrom, Milgrom, Milgrom, Milgrom, Milgrom, Moore, Moore, Nipoti, P. Kroupa, Sanchez-Salcedo, Sanders, Sanders, Sollima, Spergel, Tiret, Wu, Wu, Zhao, Zlosnik   +50 more
core   +1 more source

Alternative proposal to modified Newtonian dynamics [PDF]

Physical Review D, 2006
From a study of conserved quantities of the so-called Modified Newtonian Dynamics (MOND) we propose an alternative to this theory. We show that this proposal is consistent with the Tully-Fisher law, has conserved quantities whose Newtonian limit are the energy and angular momentum, and can be useful to explain cosmic acceleration. The dynamics obtained
Romero, Juan M., Zamora, Adolfo
openaire   +2 more sources

Emergent Motility of Self‐Organized Particle‐Giant Unilamellar Vesicle Assembly

Advanced Materials, EarlyView.
Giant unilamellar vesicles (GUVs), when combined with silica particles under alternating electric fields, spontaneously self‐assemble into motile structures. Asymmetric particle decoration induces fluid flows that propel the assemblies, enabling persistent motion and reversible control.
Selcan Karaz, Gaurav Gardi, Mertcan Han, Saadet Fatma Baltaci, Mukrime Birgul Akolpoglu, Metin Sitti   +5 more
wiley   +1 more source

Newtonian Fractional-Dimension Gravity and the Mass-Dimension Field Equation

Universe
We resume our analysis of Newtonian Fractional-Dimension Gravity (NFDG), an alternative gravitational model that does not require the dark matter (DM) paradigm.
Gabriele U. Varieschi
doaj   +1 more source

Breakdown of the Newton–Einstein Standard Gravity at Low Acceleration in Internal Dynamics of Wide Binary Stars

The Astrophysical Journal, 2023
A gravitational anomaly is found at weak gravitational acceleration g _N ≲ 10 ^−9 m s ^−2 from analyses of the dynamics of wide binary stars selected from the Gaia DR3 database that have accurate distances, proper motions, and reliably inferred stellar ...
Kyu-Hyun Chae
doaj   +1 more source

Optimization of the Rheological Properties of Fumed‐Silica‐Based Supporting Baths for Embedded Printing and Reduction of the Effect of Crevasse Formation

Advanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
Optimization of the rheological properties of supporting baths based on fumed silica with different alkyl chains functionalization suspended in polyethylene glycol and adjustment of the rheology of the ink to reduce the effect of the crevasses formed in high‐yield stress supporting baths to approach embedded 3D prints with high shape accuracy ...
Grace Vera, Silvio Tisato, Niloofar Nekoonam, Ahmad Shakeel, Stephanie Garfias, Dorothea Helmer   +5 more
wiley   +1 more source

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

Advanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini, Hadi Hosseini, Seyyed Alireza Hashemi, Mohammad Arjmand   +3 more
wiley   +1 more source