Results 161 to 170 of about 1,660,126 (341)

Resolving Dark Matter Tension: The impact of dynamical friction due to fuzzy dark matter on satellites with non-spherically symmetric potentials [PDF]

, 2023
Konstantinos N. Gourgouliatos, Andreas Vitsos   +1 more
openalex   +1 more source

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Light thermal dark matter beyond p-wave annihilation in minimal Higgs portal model

Journal of High Energy Physics
This study explores a minimal renormalizable dark matter (DM) model, incorporating a sub-GeV Majorana DM and a singlet scalar particle ϕ. Using scalar and pseudo-scalar interactions (couplings c s and c p ), we investigate implications for DM detection ...
Yu-Tong Chen, Shigeki Matsumoto, Tian-Peng Tang, Yue-Lin Sming Tsai, Lei Wu   +4 more
doaj   +1 more source

Interpretation of the Galactic gamma-ray excess with the dark matter indicated by ⁸Be and ⁴He anomalous transitions *

, 2021
Lian-Bao Jia, Tong Li
openalex   +1 more source

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

Hundreds of Nanocoulomb Electron Acceleration Driven by Multipetawatt Laser in Subcritical Density Plasmas

Advanced Photonics Research
High‐charge beams remain a key research focus in laser plasma acceleration, driven by the demands of extreme experimental conditions in nuclear physics, laboratory astrophysics, and fusion research. A distinct acceleration mechanism is presented in which
Xi‐Chen Hu, Ming‐Yang Zhu, Yi‐Fei Li, Jie Feng, Guang‐Wei Lu, Yao‐Jun Li, Xu‐Lei Ge, Xiao‐Jun Huang, Wen‐Chao Yan, Li‐Ming Chen   +9 more
doaj   +1 more source

Diagnostics of temperature and blue-shifted velocity using soft X-ray spectra from the Macau Science Satellite-1

Earth and Planetary Physics
Using the new soft X-ray data from the Macau Science Satellite-1, we studied a solar flare that occurred on 22 June 2023. We found that the centroids of the Ca (around 3.9 keV) and Fe (around 6.7 keV) line features exhibit a rapid shift toward higher ...
JianPing Li, Xu Yang, Dong Li, JinHua Shen, Lei Yang, Ya Wang, LianSheng Li, YongQiang Shi, HaiSheng Ji   +8 more
doaj   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Primordial black holes from the ultraslow-roll phase in the inflaton–curvaton mixed field inflation

European Physical Journal C: Particles and Fields
Primordial black holes (PBHs) are a promising candidate for dark matter, as they can form in the very early universe without invoking new particle physics.
Bing-Yu Su, Nan Li, Lei Feng
doaj   +1 more source