Results 101 to 110 of about 1,494,639 (351)

Radio Emission from an Ultraluminous X-Ray Source [PDF]

, 2003
The physical nature of ultraluminous x-ray sources is uncertain. Stellar mass black holes with beamed radiation and intermediate mass black holes with isotropic radiation are two plausible explanations.
Corbel, Stephane, Kaaret, Philip, Prestwich, Andrea H., Zezas, Andreas   +3 more
core   +3 more sources

A Dual‐Targeting T6SS DNase Drives Bacterial Antagonism and Eukaryotic Apoptosis via the cGAS‐STING‐TNF Axis

Advanced Science, EarlyView.
The bacterial Type VI secretion system (T6SS) emerges as a sophisticated virulence mechanism, leveraging the dual‐function effector TkeA from Yersinia pseudotuberculosis. TkeA concurrently damages rival bacteria and host cell DNA, triggering the host's cGAS‐STING‐TNF pathway and inducing apoptosis.
Li Song, Lei Xu, Pengfei Zhang, Shuying Li, Yichen Qu, Yixin Zhao, Zhenkun Shi, Ruiqi Ma, Yongdong Li, Yi Chen, Yao Wang, Zhengfan Jiang, Gehong Wei, Xihui Shen   +13 more
wiley   +1 more source

Counting Black Holes: The Cosmic Stellar Remnant Population and Implications for LIGO

, 2017
We present an empirical approach for interpreting gravitational wave signals of binary black hole mergers under the assumption that the underlying black hole population is sourced by remnants of stellar evolution.
Bullock, James S., Elbert, Oliver D., Kaplinghat, Manoj   +2 more
core   +1 more source

Impact of Transition Metals and Electrocatalyst Layer Thickness on the Pt‐Based Cathodes of Proton Exchange Membrane Fuel Cells – Do Multimetallic Electrocatalysts Necessarily Yield an Improved Performance?

Advanced Energy Materials, EarlyView.
Nonnoble transition‐metals (TMs) in PtCuNi/C catalysts have a dual influence in proton‐exchange membrane fuel cell cathode catalyst layer. While TMs act as a “sacrificial component” of PtCuNi/C, inhibiting Pt dissolution from the PtMx nanoparticles bearing the active sites, they promote the formation of separate catalysts and ionomer domains in the ...
Ricardo Sgarbi, William Ait Idir, Quentin Labarde, Camille Jourdin, Vincent Martin, Daniele Andreetta, Peizhe Wu, Enrico Negro, Fabio Bassetto, Julia Mainka, Jérôme Dillet, Clémence Marty, Fabrice Micoud, Vito Di Noto, Pawel Kulesza, Olivier Lottin, Marian Chatenet   +16 more
wiley   +1 more source

Neutron Star Mergers Are the Dominant Source of the r-process in the Early Evolution of Dwarf Galaxies [PDF]

, 2018
There are many candidate sites of the r-process: core-collapse supernovae (including rare magnetorotational core-collapse supernovae), neutron star mergers, and neutron star/black hole mergers.
Andrievsky, Serge M., Duggan, Gina E., Kirby, Evan N., Korotin, Sergey A.   +3 more
core   +3 more sources

Unique Na5−xSbSe Phase Enables High‐Rate Performance of Sb2Se3 Anodes in Na‐Ion Batteries

Advanced Energy Materials, EarlyView.
The (de)sodiation mechanism of Sb2Se3 is revealed through advanced operando techniques and ab initio simulations and underscores the value of complementary methods in exploring battery mechanisms. A new Na5−xSbSe phase is identified as the final sodiation product of Sb2Se3 anodes in Na‐ion batteries (NIBs), which enables the remarkably high‐rate ...
Amalie Skurtveit, Andrew Pastusic Jr., Anders Brennhagen, Faduma M. Maddar, Chris Erik Mohn, Abhoy Karmakar, Christopher A. O'Keefe, Ivana Hasa, Carmen Cavallo, Bjørnar Arstad, Helmer Fjellvåg, David S. Wragg, Alexey Y. Koposov   +12 more
wiley   +1 more source

Understanding Key NaCMC Properties to Optimize Electrodes and Battery Performance

Advanced Energy and Sustainability Research, EarlyView.
Sodium carboxymethyl cellulose (NaCMC) polymer properties, namely, the degree of substitution, molecular weight, and an in batteries unpublished impurity, are investigated with regard to their impact on the electrode properties. The gained knowledge then is transferred to further understand the resulting cell performance and understand key figures to ...
Noah Keim, Andreas Weber, Marcus Müller, Ulrike Kaufmann, Werner Bauer, Oliver Petermann, Roland Bayer, Helmut Ehrenberg   +7 more
wiley   +1 more source

The Morphology of Dwarf Galaxies Hosting Variable Active Galactic Nuclei

The Astrophysical Journal
We analyze Hubble Space Telescope optical imaging of eight low-mass galaxies hosting active galactic nuclei (AGN) identified via their photometric variability in V. F. Baldassare et al.
Erin Kimbro, Vivienne Baldassare, Guy Worthey, Marla Geha, Jenny Greene   +4 more
doaj   +1 more source

The Insistence of Blackness and the Persistence of Antiblackness in Ireland

Australian Journal of Social Issues, EarlyView.
ABSTRACT This paper positions Ireland as a critical site for examining the insistence of blackness and an antiblackness created and sustained through Irish ethnonationalist imaginaries and exclusionary processes. Drawing on connected sociologies and Irish Black Studies, this enquiry argues that antiblackness in Ireland operates as a generational force,
Philomena Mullen
wiley   +1 more source

The Black Hole–Bulge Mass Relation Including Dwarf Galaxies Hosting Active Galactic Nuclei [PDF]

Astrophysical Journal, 2019
We present a new relationship between central black hole (BH) mass and host galaxy stellar bulge mass extending to the lowest BH masses known in dwarf galaxies (MBH ≲ 105 M⊙; M⋆ ∼ 109 M⊙). We have obtained visible and near-infrared Hubble Space Telescope
Zachary Schutte, A. Reines, J. Greene
semanticscholar   +1 more source