Results 51 to 60 of about 1,110,244 (228)

X-ray emission from young brown dwarfs in the Orion Nebula Cluster [PDF]

, 2005
We use the sensitive X-ray data from the Chandra Orion Ultradeep Project (COUP) to study the X-ray properties of 34 spectroscopically-identified brown dwarfs with near-infrared spectral types between M6 and M9 in the core of the Orion Nebula Cluster ...
Baraffe I., Beate Stelzer, Comeron F., D’Antona F., Eric D. Feigelson, Ettore Flaccomio, Giusi Micela, Gwendolyn Meeus, Konstantin Getman, Kuker M., Lynne A. Hillenbrand, Mark J. McCaughrean, Neuhauser R., Nicolas Grosso, Salvatore Sciortino, Siess L., Thomas Preibisch   +16 more
core   +5 more sources

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

Lead‐free organic–inorganic hybrid scintillators for X‐ray detection

Aggregate
Scintillators, which can convert high‐energy particles (X‐rays) into detectable low‐energy ultraviolet–visible–near‐infrared photons, are essential components of X‐ray detectors and show extensive practical applications in nondestructive detection and ...
Haixia Cui, Wenjuan Zhu, Yongjing Deng, Tianxiang Jiang, Aoxi Yu, Huiyu Chen, Shujuan Liu, Qiang Zhao   +7 more
doaj   +1 more source

Perovskite-Based X-ray Detectors

Nanomaterials, 2023
X-ray detection has widespread applications in medical diagnosis, non-destructive industrial radiography and safety inspection, and especially, medical diagnosis realized by medical X-ray detectors is presenting an increasing demand. Perovskite materials
Chen-Fu Lin, Kuo-Wei Huang, Yen-Ting Chen, Sung-Lin Hsueh, Ming-Hsien Li, Peter Chen   +5 more
doaj   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

The return of the bursts: Thermonuclear flashes from Circinus X-1 [PDF]

, 1994
We report the detection of 15 X-ray bursts with RXTE and Swift observations of the peculiar X-ray binary Circinus X-1 during its May 2010 X-ray re-brightening.
A Sergeev, B Kostant, D Hickerson, F Ravanini, I Penkov, I Penkov, I Penkov, IG Macdonald, IN Bernstein, J Jeugt Van der, J Jeugt Van der, J Thierry-Mieg, JWB Hughes, NJ Fine, V Serganova, VG Kac, VG Kac, VG Kac, VG Kac, VG Kac, VG Kac, VG Kac, VG Kac, VG Kac, VG Kac, VG Kac, VG Kac, VK Dobrev, Y Matsuo   +28 more
core   +6 more sources

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Flexible X‐Ray Detector for Cumulative Dose Monitoring Through Reversible Photochromism and Luminescence Modulation

Advanced Science
This study presents a multi‐mode X‐ray detection and imaging strategy by integrating photochromism, photoluminescence, and radioluminescence into Tb3+‐doped CaAl2Si2O8.
Xue Bai, Yueteng Zhang, Heping Zhao, Yingzhu Zi, Zan Xu, Anjun Huang, Yangke Cun, Yue Liu, Zhiguo Song, Jianbei Qiu, Jiayan Liao, Zhengwen Yang   +11 more
doaj   +1 more source

The X-ray emission from Young Stellar Objects in the rho Ophiuchi cloud core as seen by XMM-Newton

, 2004
We observed the main core F of the rho Ophiuchi cloud, an active star-forming region located at ~140 pc, using XMM-Newton with an exposure of 33 ks. We detect 87 X-ray sources within the 30' diameter field-of-view of the it EPIC imaging detector array ...
Allende Prieto, Allende Prieto, André, André, Baraffe, Barsony, Bontemps, Carpenter, Casanova, Cohen, Cushing, Feigelson, Feigelson, Feigelson, Gehrels, Grosso, Grosso, Grosso, Güdel, H. Ozawa, Holweger, Imanishi, Imanishi, Imanishi, Jansen, Kamata, Koyama, Loren, Martín, Martín, Meyer, Mohanty, Mokler, Montmerle, N. Grosso, Neuhäuser, Neuhäuser, Preibisch, T. Montmerle, Tsuboi, Tsuboi, Vuong, Wilking   +42 more
core   +7 more sources