Results 71 to 80 of about 685,122 (335)

Cold Dark Matter Halos Must Burn [PDF]

, 2006
High-quality optical rotation curves for a sample of low-luminosity spirals evidence that the dark halos around galaxies are inconsistent with the output of proper CDM simulations. In fact, dark halos enveloping stellar disks are structures with approximately a constant density out to the optical edges.
Salucci, Paolo, Borriello A.
openaire   +3 more sources

Recent Advancements in Bulk Processing of Rare‐Earth‐Free Hard Magnetic Materials and Related Multiscale Simulations

Advanced Engineering Materials, EarlyView.
This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley   +1 more source

Remnants of Galactic Subhalos and Their Impact on Indirect Dark-Matter Searches

Galaxies, 2019
Dark-matter subhalos, predicted in large numbers in the cold-dark-matter scenario, should have an impact on dark-matter-particle searches. Recent results show that tidal disruption of these objects in computer simulations is overefficient due to ...
Martin Stref, Thomas Lacroix, Julien Lavalle   +2 more
doaj   +1 more source

Cold Dark Matter from Dark Energy

, 2001
Dark energy/matter unification is first demonstrated within the framework of a simplified model. Geodetic evolution of a cosmological constant dominated bubble Universe, free of genuine matter, is translated into a specific FRW cosmology whose effectively induced dark component highly resembles the cold dark matter ansatz.
Davidson, Aharon, Karasik, David, Lederer, Yoav   +2 more
openaire   +2 more sources

Stringy dark energy model with cold dark matter

Physics Letters B, 2005
Cosmological consequences of adding the Cold Dark Matter (CDM) to the exactly solvable stringy Dark Energy (DE) model are investigated. The model is motivated by the consideration of our Universe as a slowly decaying D3-brane. The decay of this D-brane is described in the String Field Theory framework.
Aref'eva, I. Ya., Koshelev, A. S., Vernov, S. Yu.   +2 more
openaire   +2 more sources

Microstructural Evolution and Mechanical Performance of Plasma‐Assisted Hybrid Friction Stir Welded Dissimilar Aluminum–Copper Joints

Advanced Engineering Materials, EarlyView.
Plasma‐assisted hybrid friction stir welding of dissimilar AlCu joints employs localized plasma preheating to balance heat input and enhance plastic flow. The optimized process reduces axial force by up to 35%, refines the microstructure, and achieves ≈96% joint efficiency.
Deepak Kumar Yaduwanshi, Pankaj Shrivastava, Ganesh Chouhan, Velaphi Msomi   +3 more
wiley   +1 more source

Mechanically Deposited Wear‐Resistant Amorphous Zr55Cu30Al10Ni5 Coatings

Advanced Engineering Materials, EarlyView.
Mechanically deposited from glassy ribbons, the Zr55Cu30Al10Ni5 amorphous coating formed a hard, continuous layer on AISI 1010 steel, tripling substrate hardness, lowering friction, and reducing wear. Despite its rough surface, it showed friction and wear behavior comparable to the crystalline alloy, highlighting its strong potential as a durable ...
Tales Ferreira, Pietro Cazelatto Bortolini, André Luiz Vidilli, Paulo Wilmar Barbosa Marques, Jéferson Aparecido Moreto, Claudio Shyinti Kiminami, Walter José Botta, Claudemiro Bolfarini, Guilherme Yuuki Koga   +8 more
wiley   +1 more source

Dark matter, sparticle spectroscopy and muon (g − 2) in SU(4) c × SU(2) L × SU(2) R

Journal of High Energy Physics, 2018
We explore the sparticle mass spectra including LSP dark matter within the framework of supersymmetric SU(4) c × SU(2) L × SU(2) R (422) models, taking into account the constraints from extensive LHC and cold dark matter searches.
M. E. Gómez, S. Lola, R. Ruiz de Austri, Q. Shafi   +3 more
doaj   +1 more source

The detection of sub-solar mass dark matter halos

, 2009
Dark matter halos of sub-solar mass are the first bound objects to form in cold dark matter theories. In this article, I discuss the present understanding of "microhalos'', their role in structure formation, and the implications of their potential ...
, Bertschinger E, Bode P, Bringmann T, Bringmann T, Bryan G L, Colin P, Diemand J, Diemand J, Eke V R, Elahi P J Thacker R J Widrow L M Scannapieco E, Green A M, Heitmann K, Hofmann W (HESS Collaboration), Hooper D Stebbins A Zurek K M, Klypin A, Komatsu E, Kuhlen M Diemand J Madau P, March-Russell J D West S M, Martinez G D Bullock J S Kaplinghat M Strigari L E Trotta R, Martinez M (MAGIC Collaboration), Moore B, Ritz S, Savvas M Koushiappas, Springel V, Sreekumar P, Vogelsberger M, White S D M, Yoshida N, Zemp M, Zhao H S   +30 more
core   +1 more source

FeDSNP‐Pa Nanoassemblies: A Triple‐Action Therapeutic Strategy Targeting Oxidative Stress, Inflammation, and Pyroptosis for Retinal Ganglion Cell Protection in Glaucoma

Advanced Functional Materials, EarlyView.
FeDSNP‐Pa, a metallized nanoparticle loaded with sodium pyruvate (Pa), exerts triple therapeutic effects by scavenging reactive oxygen species (ROS), suppressing inflammatory responses, and inhibiting pyroptosis signaling pathways. This multifunctional neuroprotective strategy protecting retinal ganglion cells (RGCs) from elevated intraocular pressure ...
Yukun Wu, Xue Li, Tong Wu, Dan Ji, Yugang Bai, Xuezhi Zhou   +5 more
wiley   +1 more source