Results 91 to 100 of about 6,069 (215)

Galaxy groups in the presence of cosmological constant: Increasing the masses of groups

Physics Letters B
The boundaries of galaxy groups and clusters are defined by the interplay between the Newtonian attractive force and the decoupling from the local expansion of the Universe.
David Benisty, Moshe M. Chaichian, Anca Tureanu   +2 more
doaj   +1 more source

Missing Baryons, from Clusters to Groups of Galaxies

The Astrophysical Journal, 2007
From clusters to groups of galaxies, the powerful bremsstrahlung radiation L_X emitted in X rays by the intracluster plasma is observed to decline sharply with lowering virial temperatures T (i.e., at shallower depths of the gravitational wells) after a steep local L_X-T correlation; this implies increasing scarcity of diffuse baryons relative to dark ...
Cavaliere, A., Lapi, A.
openaire   +3 more sources

Serendipitous Discovery of Short Peptides Dimethylammonium Salt Promoting Neural Differentiation

Journal of Peptide Science, Volume 32, Issue 10, October 2026.
Design and synthesis of new heptapeptides exhibiting significant neuroprotection and structure–activity relationship (SAR) insights to guide the development of bioactive peptides. ABSTRACT The synthesis and in vitro neuronal growth support activity of a novel series of heptapeptides (1–19) are reported here. Structural studies of the peptide 3 (LSAVTFG.
Sadiq Noor Khan, Maha Shahid, Shahzad Nazir, Anila Bashir, Sumbla Sheikh, Shabana Usman Simjee, Marc Maresca, Farzana Shaheen   +7 more
wiley   +1 more source

Diving Deeper Into Mechanisms of Acrylamide‐Induced Toxicity: RNA Sequencing Reveals Transcriptomic Alteration and Retrotransposon Expression in Drosophila melanogaster

Environmental Toxicology, Volume 41, Issue 10, Page 1105-1118, October 2026.
ABSTRACT Given the inevitability of human and animal exposure to acrylamide, there is increasing concern regarding its potential health risks. While a number of molecular mechanisms have been proposed, the complexity of acrylamide toxicological pathways and interactions remains incompletely characterized.
Oluwabukola Mary Farodoye, Titilayomi Ayomide Otenaike, Daniela Moreira Mombach, Monica Medeiros Silva, Amos Olalekan Abolaji, Elgion Lucio Da Silva Loreto   +5 more
wiley   +1 more source

Constraining Gas Mass Fractions in Galaxy Groups and Clusters with the First CHIME/FRB Outrigger

The Astrophysical Journal
In recent years, localized fast radio bursts (FRBs) have emerged as a powerful tool to study the structure of the baryonic matter in the Universe. Their dispersion measures (DMs) scale linearly with electron density independent of gas temperature, making
Adam E. Lanman, Sunil Simha, Kiyoshi W. Masui, J. Xavier Prochaska, Rachel Darlinger, Fengqiu Adam Dong, B. M. Gaensler, Ronniy C. Joseph, Jane Kaczmarek, Lordrick Kahinga, Afrokk Khan, Calvin Leung, Lluis Mas-Ribas, Swarali Shivraj Patil, Aaron B. Pearlman, Mawson Sammons, Kaitlyn Shin, Kendrick Smith, Haochen Wang   +18 more
doaj   +1 more source

Galaxy Superclusters and Their Complexes in the Cosmic Web

Universe
The richest and largest structures in the cosmic web are galaxy superclusters, their complexes (associations of several almost connected very rich superclusters), and planes.
Maret Einasto
doaj   +1 more source

Mass‐to‐Light Ratios of Groups and Clusters of Galaxies

The Astrophysical Journal, 2000
We constrain the mass-to-light ratios, gas mass fractions, baryon mass fractions and the ratios of total to luminous mass for a sample of eight nearby relaxed galaxy groups and clusters: A262, A426, A478, A1795, A2052, A2063, A2199 and MKW4s. We use ASCA spatially resolved spectroscopic X-ray observations and ROSAT PSPC images to constrain the total ...
Hradecky, V., Jones, C., Donnelly, R. H., Djorgovski, S. G., Gal, R. R., Odewahn, S. C.   +5 more
openaire   +2 more sources

Bacterial Lysis Observation Over Time Assay (BLOTS) for High‐Throughput Isolation, Sequencing, and Characterization of Bacteriophages

Current Protocols, Volume 6, Issue 9, September 2026.
Abstract Phages remain severely under‐sampled, largely due to the limitations of current isolation methods, which are labor‐intensive, low‐throughput, and often restricted to a narrow set of bacterial hosts. To address this gap, we developed a robust and scalable field‐to‐genome workflow that leverages laboratory automation to screen environmental ...
Sean Jia Le Pang, Soon Keong Wee, Bobby Guo Wei Lee, Odelia Yap, Eric Peng Huat Yap   +4 more
wiley   +1 more source

Profiles of Anxiety in Children Undergoing Elective Surgery: Predictors and Perioperative Outcomes

Developmental Psychobiology, Volume 68, Issue 5, September 2026.
ABSTRACT Surgery is an anxiety‐provoking event, but there are individual differences in the magnitude of experienced anxiety. The objective of this study was to identify patterns of children's preoperative anxiety, its predictors, and perioperative outcomes. The sample included 171 children (Mage = 9.95 years) undergoing elective surgery.
Kristie L. Poole, Cheryl H. T. Chow, Norman Buckley, Desigen Reddy, Ryan J. Van Lieshout, Louis A. Schmidt   +5 more
wiley   +1 more source

The XMAGNET Exascale MHD Simulations of SMBH Feedback in Galaxy Groups and Clusters: Overview and Preliminary Cluster Results

The Astrophysical Journal
We present initial results from extremely well-resolved 3D magnetohydrodynamical simulations of idealized galaxy clusters, conducted using the AthenaPK code on the Frontier exascale supercomputer.
Philipp Grete, Brian W. O’Shea, Forrest W. Glines, Deovrat Prasad, Benjamin D. Wibking, Martin Fournier, Marcus Brüggen, G. Mark Voit   +7 more
doaj   +1 more source