Results 71 to 80 of about 428,876 (333)

Star Stream Velocity Distributions in Cold Dark Matter and Warm Dark Matter Galactic Halos

open access: yesThe Astrophysical Journal
The dark matter subhalos orbiting in a galactic halo perturb the orbits of stars in thin stellar streams. Over time, the random velocities in the streams develop non-Gaussian wings.
Raymond G. Carlberg   +3 more
doaj   +1 more source

Tunable Synthetic Hydrogel Modulates Hepatic Lineage Specification of Human Liver Organoid

open access: yesAdvanced Functional Materials, EarlyView.
In this study, a synthetic hydrogel is reported that supports the formation of hiPSC‐derived human liver organoids (HLOs). Hepatic lineage specification can be modulated via conjugation of RGD peptide to hydrogel: RGD‐conjugated hydrogels promote cholangiocyte differentiation, whereas RGD‐free hydrogels favor hepatocyte commitment of HLO cells.
Lei Wang   +16 more
wiley   +1 more source

Cosmological perturbations engendered by discrete relativistic species

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Within the extension of the $$\varLambda $$ Λ CDM model, allowing for the presence of neutrinos or warm dark matter, we develop the analytical cosmological perturbation theory.
Maksym Brilenkov   +2 more
doaj   +1 more source

Synergistic Osteogenesis After Co‐Administration of cmRNAs Encoding BMP‐2 and BMP‐7 Utilizing a Transcript‐Activated Matrix

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates that the dual delivery of BMP‐2/‐7 coding cmRNAs for bone healing is demonstrated as feasible, safe, and highly osteogenic. Compared to single BMP‐2 or BMP‐7 cmRNAs, the combination enhances the production of both mineral and organic components of the extracellular matrix when delivered using a collagen‐HA scaffold, supporting ...
Claudia Del Toro Runzer   +7 more
wiley   +1 more source

New Bounds for the Mass of Warm Dark Matter Particles Using Results from Fermionic King Model

open access: yesUniverse, 2021
After reviewing several aspects about the thermodynamics of self-gravitating systems that undergo the evaporation (escape) of their constituents, some recent results obtained in the framework of fermionic King model are applied here to the analysis of ...
Luisberis Velazquez
doaj   +1 more source

Comment on “Self-interacting warm dark matter”

open access: yesPhysical Review D, 2001
3 pages, 1 ...
Barandela, Fernando Atrio   +1 more
openaire   +2 more sources

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

Cosmological relaxation from dark fermion production

open access: yesJournal of High Energy Physics, 2020
We consider the cosmological relaxation solution to the electroweak hierarchy problem using the fermion production as a dominant friction force. In our approach, neither super-Planckian field excursions nor a large number of e-folds arise, and scanning ...
Kenji Kadota, Ui Min, Minho Son, Fang Ye
doaj   +1 more source

Conformal freeze-in, composite dark photon, and asymmetric reheating

open access: yesJournal of High Energy Physics, 2023
Large classes of dark sector models feature mass scales and couplings very different from the ones we observe in the Standard Model (SM). Moreover, in the freeze-in mechanism, often employed by the dark sector models, it is also required that the dark ...
Wen Han Chiu   +2 more
doaj   +1 more source

Fermionic partner of Quintessence field as candidate for dark matter

open access: yes, 2004
Quintessence is a possible candidate for dark energy. In this paper we study the phenomenologies of the fermionic partner of Quintessence, the Quintessino.
A.G. Riess   +36 more
core   +1 more source

Home - About - Disclaimer - Privacy