Results 91 to 100 of about 1,203,775 (345)

X-ray sources as tracers of the large-scale structure in the Universe

, 2000
We review the current status of studies of large-scale structure in the X-ray Universe. After motivating the use X-rays for cosmological purposes, we discuss the various approaches used on different angular scales including X-ray background multipoles ...
Barcons, X., Carrera, F. J., Ceballos, M. T., Mateos, S.   +3 more
core   +2 more sources

Pioglitazone plus (−)‐epigallocatechin gallate: a novel approach to enhance osteogenic performance in aged bone marrow mesenchymal stem cells

FEBS Open Bio, EarlyView.
Aged human bmMSCs are seeded in the scaffold. Osteoblastic induction can slightly increase cell's bone‐forming activity to produce bone‐like tissues, shown as the sporadic xylenol orange‐stained spots (the lower left image). Notably, pioglitazone plus EGCG co‐treatment dramatically increases cell's bone‐forming activity and bone‐like tissue production (
Ching‐Yun Chen, Jia‐Ci Jhang, Chun‐Yi Peng, Quốc Cường Nguyễn, Feng‐Huei Lin, Hung‐Ming Wu, Shankung Lin   +6 more
wiley   +1 more source

Monitoring the X-Ray Variability of Bright X-Ray Sources in M33

The Astrophysical Journal
We present a new five-epoch Chandra X-ray Observatory monitoring survey of the nearby spiral galaxy M33 which probes X-ray variability with time sampling between two weeks and four months.
Rebecca Kyer, Shelby Albrecht, Benjamin F. Williams, Kyros Hinton, Breanna Binder, Margaret Lazzarini, Kristen Garofali, Bret Lehmer, Michael Eracleous, Paul P. Plucinsky, Vallia Antoniou   +10 more
doaj   +1 more source

Nanomaterial-based x-ray sources

Nanotechnology, 2016
Following the recent global excitement and investment in the emerging, and rapidly growing, classes of one and two-dimensional nanomaterials, we here present a perspective on one of the viable applications of such materials: field electron emission based x-ray sources.
Matthew T, Cole, R J, Parmee, William I, Milne   +2 more
openaire   +2 more sources

X-ray selected Infrared Excess AGN in the Chandra Deep Fields: a moderate fraction of Compton-thick sources

, 2010
We examine the properties of the X-ray detected, Infrared Excess AGN or Dust Obscured Galaxies (DOGs) in the Chandra Deep Fields (CDF). We find 26 X-ray selected sources which obey the 24 micron to R-band flux ratio criterion f_24/f_R>1000.
A. Akylas, A. Comastri, Aird, Akylas, Alexander, Alexander, Alexander, Arnouts, Barger, Barger, Barmby, Bauer, Bauer, Braito, Brandt, Brusa, Brusa, Bussmann, Bussmann, Capak, Cardamone, Cash, Chapman, Churazov, Comastri, Comastri, Daddi, De Luca, de Santis, Dey, Dickey, Donley, E. M. Xilouris, E. Rovilos, Eckart, Elvis, Fiore, Fiore, Frontera, Gawiser, Georgakakis, Georgantopoulos, Georgantopoulos, Georgantopoulos, Giacconi, Giavalisco, Gilli, Grazian, Houck, I. Georgantopoulos, Iwasawa, La Franca, Lacy, Lanzuisi, Luo, Luo, Lutz, Lutz, Marconi, Matt, Merloni, Mirabel, Moretti, Nandra, Nandra, Narayanan, Polletta, Polletta, Pope, Ranalli, Rovilos, Sazonov, Silverman, Stern, Sutherland, Tozzi, Tozzi, Treister, Treister, Ueda, Werner, Zezas   +81 more
core   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

FEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Patatin‐domain‐containing (phospho)lipases under control: Mammalian co‐regulators and pathogenic activation mechanisms

FEBS Open Bio, EarlyView.
Patatin domain‐containing (phospho)lipases are lipid‐hydrolyzing enzymes central to metabolism, membrane remodeling, and signaling. Their activity relies on precise co‐activation mechanisms involving protein–protein interactions and conformational rearrangements.
Noopur Dubey, Lina Riegler‐Berket, Monika Oberer   +2 more
wiley   +1 more source

X-ray populations in galaxies

, 2005
Today's sensistive, high resolution Chandra X-ray observations allow the study of many populations of X-ray sources. The traditional astronomical tools of photometric diagrams and luminosity functions are now applied to these populations, and provide the
Belczynski, Fabbiano, Fabbiano, Fabbiano, Fabbiano, Fabbiano, Fabbiano, Fabbiano, G. Fabbiano, Gilfanov, Gilfanov, Grimm, Grimm, Grimm, Helfand, Irwin, Kilgard, Kim, Kim, Kim, Kong, Kong, Kraft, Matsushita, Sarazin, Shapley, Soria, Swartz, Tennant, Verbunt, Weisskopf, Zezas   +31 more
core   +1 more source

Increased Blood Levels of NfL, GFAP, and Placental Growth Factor After Radiotherapy to the Brain

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT In this study, we analyzed biomarkers of neuronal, glial, and vascular injury in longitudinal paired samples of blood and cerebrospinal fluid after prophylactic cranial irradiation in patients with small cell lung cancer. Neurofilament light chain protein (NfL) and glial fibrillary acidic protein (GFAP) increased in serum and cerebrospinal ...
Erik Fernström, Thomas Björk‐Eriksson, Pontus Erickson, Jan Nyman, Henrik Zetterberg, Marie Kalm   +5 more
wiley   +1 more source

Physician Referral Patterns to Physical Therapists for Managing Knee Osteoarthritis: A Retrospective Analysis of Electronic Health Records From an Integrated Health System

Arthritis Care &Research, EarlyView.
Objective This study aims to describe the frequency and timing of physician referrals to physical therapists (PTs) and other treatments prescribed over 12 months in patients with recent onset of knee osteoarthritis (KOA). The study also aims to identify determinants of early PT referrals.
Samannaaz S. Khoja, Joel M. Stevans, Gustavo J. Almeida, Clair Smith, Janet K. Freburger   +4 more
wiley   +1 more source