Results 71 to 80 of about 833,438 (302)

Age and metallicity gradients in fossil ellipticals [PDF]

, 2013
Fossil galaxy groups are speculated to be old and highly evolved systems of galaxies that formed early in the universe and had enough time to deplete their $L^{*}$ galaxies through successive mergers of member galaxies, building up one massive central ...
Eigenthaler, Paul, Zeilinger, Werner W.
core   +2 more sources

Toward Scalable Solutions for Silver‐Based Gas Diffusion Electrode Fabrication for the Electrochemical Conversion of CO2 – A Perspective

Advanced Functional Materials, EarlyView.
In this study, the preparation techniques for silver‐based gas diffusion electrodes used for the electrochemical reduction of carbon dioxide (eCO2R) are systematically reviewed and compared with respect to their scalability. In addition, physics‐based and data‐driven modeling approaches are discussed, and a perspective is given on how modeling can aid ...
Simon Emken, K. Ashoke Raman, Alexander Bauer, Violeta Karyofylli, Eva Jodat, André Karl, Rüdiger‐A. Eichel   +6 more
wiley   +1 more source

Disturbed Fossil Group Galaxy NGC 1132

, 2018
We have analyzed the Chandra archival data of NGC 1132, a well-known fossil group, i.e. a system expected to be old and relaxed long after the giant elliptical galaxy assembly. Instead, the Chandra data reveal that the hot gas morphology is disturbed and
Anderson, Craig, Burke, Doug, Fabbiano, Giuseppina, Fruscione, Antonella, Kim, Dong-Woo, Lauer, Jen, McCollough, Michael, Morgan, Doug, Mossman, Amy, O'Sullivan, Ewan, Paggi, Alessandro, Trinchieri, Ginevra, Vrtilek, Saeqa   +12 more
core   +1 more source

Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth

Advanced Functional Materials, EarlyView.
Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang, Ying Chen, Chenyang Shi, Progyateg Chakma, James J. De Yoreo, Chun‐Long Chen   +5 more
wiley   +1 more source

Chiral Nanohoops as an Efficient Spin Polarization System

Advanced Functional Materials, EarlyView.
Chiral conjugated nanohoops with a central dibenzopentalene unit exhibit 90% spin polarization at low voltage and high conductivity. These properties make them ideal components in molecular spintronics applications. Abstract A central challenge in molecular spintronics is to achieve a high spin polarization at low operating voltages and ambient ...
Anu Gupta, Philipp Seitz, Mathias Hermann, Birgit Esser, Ron Naaman   +4 more
wiley   +1 more source

Multi-system analysis of offshore geologic carbon storage: a review of open-source data science solutions

Frontiers in Earth Science
Geologic carbon storage projects are maturing worldwide and the footprint of deployment in the offshore is expanding. At present, there are ten projects in operation or that have been completed, more than 50 in construction and development, and dozens of
MacKenzie Mark-Moser, Jennifer Bauer, Abigail Martin, Abigail Martin, Paige Morkner, Lucy Romeo, Lucy Romeo, Kelly Rose   +7 more
doaj   +1 more source

Selective Sampling of Species and Fossils Influences Age Estimates Under the Fossilized Birth–Death Model

Frontiers in Genetics, 2019
The fossilized birth–death (FBD) model allows the estimation of species divergence times from molecular and fossil information in a coherent framework of diversification and fossil sampling.
Michael Matschiner, Michael Matschiner
doaj   +1 more source

Synopsis of rare fossil animal spermatozoa in amber and sedimentary deposits

BSGF - Earth Sciences Bulletin, 2020
Fossil spermatozoa are extremely rare. Among the eight cases reported here, including two cases of spermatophores without visible sperm cells, six are fossils preserved in amber.
Breton Gérard, Poinar George
doaj   +1 more source

Fossil Groups in the Millennium Simulation. Evolution of the Brightest Galaxies

, 2008
We create a catalogue of simulated fossil groups and study their properties, in particular the merging histories of their first-ranked galaxies. We compare the simulated fossil group properties with those of both simulated non-fossil and observed fossil ...
Adelman-McCarthy, Beers, Bender, Bertone, Blanton, C. Mendes de Oliveira, Croton, Cypriano, D'Onghia, Dariush, Davis, De Lucia, De Lucia, Díaz, E. Díaz-Giménez, H. Muriel, Huchra, Jones, Khochfar, Khosroshahi, Mendes de Oliveira, Merchán, Milosavljevic, Poggianti, Popesso, Sales, Spergel, Spergel, Springel, van den Bosch, Vikhlinin, Wang, Wegner, Xu   +33 more
core   +2 more sources

Transition From Lattice Oxygen to Radical‐Mediated Oxidation in Ammonium‐Intercalated Birnessite Catalysts for Selective Valorization of Biomass to Produce Formic Acid

Advanced Functional Materials, EarlyView.
The catalytic valorization of biomass represents an essential approach for achieving sustainable chemical production, with formic acid (FA) being recognized as a valuable platform chemical for hydrogen storage and environmentally friendly synthetic applications.
Yiqi Geng, Wei Xiong, Wenhua Xue, Jian Ye, Puranjan Mishra, Rajenahally V. Jagadeesh, Jun Zhao   +6 more
wiley   +1 more source