Results 21 to 30 of about 254 (138)

X-ray selected clusters of galaxies [PDF]

Symposium - International Astronomical Union, 1988
Studies of the evolution of X-ray emission from clusters of galaxies have so far used optically discovered distant clusters then observed at X-ray wavelengths. A different approach to the study of cluster evolution is to use clusters selected directly by their X-ray emission since X-ray selection is extremely successful at discovering high redshift ...
Isabella M. Gioia, T. Maccacaro, S. L. Morris, R. E. Schild, J. T. Stocke, A. Wolter   +5 more
openaire   +2 more sources

Kaempferol Attenuates Spaceflight‐Associated Knee Cartilage Degradation by Targeting NOX4‐Mediated Mitochondrial Dysfunction

Advanced Science, EarlyView.
We have shown that both simulated and actual spaceflight contribute to cartilage degradation in the knees of mice. Using RNA sequencing and bioenergetic profiling, we identified NADPH oxidase 4 (NOX4) as a key factor driving these changes. Additionally, we found that kaempferol, a naturally occurring flavonoid that binds directly to NOX4, reduces ...
Yuesong Yin, Ruiling Xu, Meagan J. Makarczyk, Jia‐Jun Liu, Silvia Liu, Matthew Z. Shi, Roberta Di Carlo, Michael F. Almeida, Alex Garris, Sarah Day, Rebekah Sanchez‐Hodge, Jonathan C. Schisler, Aleeza H. Zilberman, Noah G. Allen, Angela J. Kubik, Elizabeth A. Blaber, Arnold Z. Olali, Wanqing Xie, Douglas C. Wallace, Christopher E. Mason, Peter G. Alexander, Giuseppe Intini, Afshin Beheshti, Hang Lin   +23 more
wiley   +1 more source

Feasibility Study for Application of Digitized Henize Mt. Wilson Michigan Southern Sky Hα$$ \boldsymbol{\alpha} $$ Survey Low‐Dispersive Spectral Plates for Searches for Anomalous and Highly Redshifted Objects

Astronomische Nachrichten, EarlyView.
ABSTRACT The goal of this study is to confirm the feasibility of the use of digitized low dispersive MtWilson Michigan Southern Sky Hα$$ \alpha $$ survey astronomical photographic plates for modern astrophysical research. The detection of highly redshifted objects, such as early galaxies and quasars, is fundamental to understanding the universe's ...
Tauseef Ahmad Zafar, René Hudec, Marta Mara Merono Vidagany, Fehmi Mejri   +3 more
wiley   +1 more source

Helium and Iron in X-ray Galaxy Clusters [PDF]

, 2007
I discuss the role of the sedimentation of helium in galaxy cluster cores on the observed X-ray properties and present a history of the metal accumulation in the ICM, with new calculations with respect to my previous work following the recent evidence of a bi-modal distribution of the delay time in Supernovae Type Ia.
openaire   +2 more sources

Mechanically Durable Intrinsically Stretchable Neuromorphic Devices via Molecular Microstructure Design

Small, EarlyView.
This study reports intrinsically stretchable neuromorphic devices that exhibit outstanding mechanical stability while fully preserving their electrical characteristics over 105 repeated deformation cycles under 50% tensile strain. Such robustness is achieved through a rational molecular design strategy that systematically modulates the chain packing of
Kwan‐Nyeong Kim, Ho‐Eon Baek, Min‐Jun Choi, Min‐Jun Sung, Seung‐Woo Lee, Chae‐Yun Song, Hyun‐Haeng Lee, Sangjun Ma, Karina Ayu Larasati, Jeong‐Yun Sun, Hea‐Lim Park, Yun‐Hi Kim, Tae‐Woo Lee   +12 more
wiley   +1 more source

Nanoscale space weathering features in mature lunar soil revealed by TEM and APT

Meteoritics &Planetary Science, EarlyView.
Abstract Space weathering significantly alters the optical, chemical, and structural properties of lunar regolith at micro‐ and nanoscales; yet detailed nanoscale variability within individual soils remains underexplored. Here we apply transmission electron microscopy (TEM) and atom probe tomography to four mineral grains (olivine, ilmenite, and two ...
Jennika Greer, Alexander M. Kling, Luke Daly, Dieter Isheim, David N. Seidman, Michelle S. Thompson, Philipp R. Heck   +6 more
wiley   +1 more source

Women in space: A review of known physiological adaptations and health perspectives

Experimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford, Danielle J. Carroll, Heather C. M. Allaway, Bonnie J. Dunbar, Aenor J. Sawyer   +4 more
wiley   +1 more source

50% body weight loading reduces stature increases and lumbar disc expansion from 4 h hyper‐buoyancy floatation versus 15 min sitting upright

Experimental Physiology, EarlyView.
Abstract Microgravity is associated with stature increases, back pain and post‐flight intervertebral disc (IVD) herniation. This study aims to determine whether 30 s seated 50% body weight (BW) axial loading is comparable to 15 min sitting upright in 1 g upon changes in stature, anterior lumbar IVD height (via ultrasound), passive vertebral stiffness ...
David Marcos‐Lorenzo, Christina Lysandrou, Laura Sudres, Alfonso Gil‐Martinez, Jaap Swanenburg, James Edward Clark, David Andrew Green   +6 more
wiley   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

MUC1 as a Survival Effector of Radiotherapy‐Induced Epithelial Hybrid States in Basal‐Like Breast Cancer

International Journal of Cancer, Volume 159, Issue 5, Page 1296-1310, 1 September 2026.
Basal‐like breast cancer (BLBC) is aggressive and often exhibits inherent or acquired resistance to radiotherapy (RT), a primary treatment option. RT resistance is underpinned by molecular alterations, many of which are poorly understood. Here, RT‐induced transcriptomic changes were analyzed using bulk and spatial sequencing in a BLBC mouse model and ...
Garyfallia Pantelaiou‐Prokaki, Husam Bamahmoud, Nadine S. Georges, Shaishavi Jansari, Annika Jung, Daniela Grimm, Evangelos Prokakis, Fabian Alexander Gayer, Maryam Deldar, Christian Dullin, Julia Gallwas, Florian Wegwitz, Frauke Alves   +12 more
wiley   +1 more source