Results 71 to 80 of about 70,657 (316)

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

A Patient‐Specific 3D Printed Carotid Artery Model Integrating Vascular Structure, Flow, and Endothelium Responses

Advanced Healthcare Materials, EarlyView.
This study introduces the first miniaturized, patient‐specific carotid artery model created via 3D printing using GelMA with embedded vascular cells. Combining CFD, PIV, and flow perfusion, the model replicates anatomically dependent hemodynamics and cellular responses.
Jorge A. Catano, Louis Jun Ye Ong, Mingyang Yuan, Yunkun Qu, Jessica Benitez, Prasad KDV Yarlagadda, Yi‐Chin Toh, Zhiyong Li   +7 more
wiley   +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

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

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

Geometry‐Guided Osteogenesis in Bone‐on‐a‐Chip Systems Using Triply Periodic Minimal Surface Scaffolds

Advanced Healthcare Materials, EarlyView.
This study presents a bone‐on‐a‐chip platform incorporating TPMS scaffolds to study geometry‐dependent osteogenesis under dynamic flow. By tuning pore shape and solidity, it precisely controls mechanical cues, revealing how topological features and shear stress affect osteogenic differentiation and matrix formation.
Donggyu Kim, Giheon Ha, Minseok Kim, Minjin Kwak, Han‐Jun Kim, Junmin Lee   +5 more
wiley   +1 more source

Qualitative meta-synthesis comparing non-Newtonian, non-Kolmogorov, and modified Krieger computational fluid dynamics models exploring the intracranial aneurysm dynamics: state of the art

Interdisciplinary Neurosurgery
Background: Computational fluid dynamics (CFD) models are crucial for examining blood flow and the morphology of brain aneurysms. These models are used to enhance the understanding of the formation, rupture, and post-treatment behavior of aneurysms.
Yao Christian Hugues Dokponou, Abdessamad El Ouahabi, Mahjouba Boutarbouch   +2 more
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

Phase mixing in MOND [PDF]

, 2007
Dissipationless collapses in Modified Newtonian Dynamics (MOND) have been studied by using our MOND particle-mesh N-body code, finding that the projected density profiles of the final virialized systems are well described by Sersic profiles with index ...
Ciotti, L., Londrillo, P., Nipoti, C.
core   +3 more sources

Injectable Deep Eutectic Solvent‐Based Ionic Gel With Rapid Gelation and Broad Hemostatic Functionality

Advanced Healthcare Materials, EarlyView.
An injectable deep eutectic solvent‐based ionic gel is developed for rapid in situ gelation and broad‐spectrum hemostatic functionality. The material combines high mechanical strength, strong tissue adhesion, and antibacterial activity, demonstrating potential as an advanced biofunctional gel for emergency bleeding control and wound care.
Jia‐Yu Yang, En‐Yu Zhou, Ting‐Hui Cheng, Pin‐Hung Liu, Wen‐Ching Hsieh, Hui‐Ching Cheng, Yi‐Kai Hong, Yu‐Chen Lin, Yi‐Chiung Hsu, Chao‐Chun Yang, Chao‐Kai Hsu, Li‐Chieh Kuo, Shang‐Chin Hsieh, Cheng‐Hsin Chuang   +13 more
wiley   +1 more source