Results 81 to 90 of about 7,388,950 (300)

THE HARD X-RAY PERSPECTIVE ON THE SOFT X-RAY EXCESS [PDF]

The Astrophysical Journal, 2014
The X-ray spectra of many active galactic nuclei (AGN) exhibit a `soft excess' below 1keV, whose physical origin remains unclear. Diverse models have been suggested to account for it, including ionised reflection of X-rays from the inner part of the accretion disc, ionised winds/absorbers, and Comptonisation.
Vasudevan, Ranjan V., Mushotzky, Richard F., Reynolds, Christopher S., Fabian, Andrew C., Lohfink, Anne M., Zoghbi, Abderahmen, Gallo, Luigi C., Walton, Dominic   +7 more
openaire   +3 more sources

Transcriptional profiling of circulating extracellular vesicles from prebiopsy prostate cancer patients

Molecular Oncology, EarlyView.
RNA profiling of circulating extracellular vesicles (EVs) from blood samples of men undergoing prostate biopsy identifies transcripts associated with clinically significant prostate cancer. Integrative analysis with public tumor datasets links EV‐derived gene signatures to tumor stage and progression‐free survival, highlighting CASP3, XRCC2, and RIT1 ...
Stefan Werner, Pierre Tennstedt, Randi C. Pose, Christian Müller, Katharina Besler, Svenja Schneegans, Malik Alawi, Marie C. Roesch, Sven Peine, Desiree Bonci, Joanna Budna‐Tukan, Evi Lianidou, Catherine Alix‐Panabières, Derya Tilki, Klaus Pantel   +14 more
wiley   +1 more source

Low-dose x-ray tomography through a deep convolutional neural network

Scientific Reports, 2018
Synchrotron-based X-ray tomography offers the potential for rapid large-scale reconstructions of the interiors of materials and biological tissue at fine resolution.
Xiaogang Yang, Vincent De Andrade, William Scullin, Eva L. Dyer, Narayanan Kasthuri, Francesco De Carlo, Doğa Gürsoy   +6 more
doaj   +1 more source

Experiments on the X-rays [PDF]

Science, 1896
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openaire   +3 more sources

Loss of IGF‐1R impairs DNA‐PKcs recruitment to chromatin leading to defective end‐joining

Molecular Oncology, EarlyView.
IGF‐1R promotes radioresistance by facilitating DNA‐PKcs recruitment to chromatin, enabling non‐homologous end‐joining (NHEJ) repair of double‐strand breaks. Inhibition or loss of IGF‐1R disrupts this recruitment to damage sites, driving compensatory reliance on microhomology‐mediated end‐joining (MMEJ) repair.
Matthew O. Ellis, Jack V. Mills, Wojciech Niedzwiedz, Valentine M. Macaulay   +3 more
wiley   +1 more source

Electron pressure drives THz phonons in metal–metal superlattices

Nature Communications
Ultrafast control of lattice motion in metals is a central challenge for high-frequency strain engineering and spintronic applications. Coherent strain control at terahertz (THz) frequencies in metals has remained elusive because free electrons are ...
Jan-Etienne Pudell, Maximilian Mattern, Marc Herzog, Alexander von Reppert, Chandan K. Singh, Daniel Schick, Michel Hehn, Ulrike Boesenberg, Angel Rodriguez-Fernandez, Roman Shayduk, Wonhyuk Jo, Johannes Möller, Jörg Hallmann, James Wrigley, Peter M. Oppeneer, Anders Madsen, Matias Bargheer   +16 more
doaj   +1 more source

Finding novel vulnerabilities of hypomorphic BRCA1 alleles

Molecular Oncology, EarlyView.
Synthetic lethality screens performed to identify novel vulnerabilities often model complete gene loss, thereby overlooking patient‐derived hypomorphic mutations. In this study, we have performed genome‐wide CRISPR screens on BRCA1 hypomorphic mutations, showing BRCA1I26A behaves like wild‐type, while BRCA1R1699Q mimics deficiency. Furthermore, we have
Anne Schreuder, Klaas de Lint, Hồ Mỹ Phúc Võ, Mariana M. Góis, Rosalie A. Kampen, Marta San Martin Alonso, Ilse Nootenboom, Veronica Garzero, Tiemen J. Wendel, Rob M. F. Wolthuis, Sylvie M. Noordermeer   +10 more
wiley   +1 more source

Equilibrium shape and surface termination of supported magnetite nanoparticles

Communications Chemistry
The equilibrium shape and surface termination of magnetite nanoparticles (NPs) are fundamental properties that determine the physical and chemical properties of the supercrystal structure of oleic acid-coated magnetite NPs.
Mohammad Ebrahim Haji Naghi Tehrani, Daniel Silvan Dolling, Jan-Christian Schober, Esko Erick Beck, Mona Kohantorabi, Arno Jeromin, Ludwig J. V. Ahrens-Iwers, Thomas F. Keller, Vedran Vonk, Gregor B. Vonbun-Feldbauer, Heshmat Noei, Andreas Stierle   +11 more
doaj   +1 more source

Dispersive X-ray absorption spectroscopy using independent grazing-incidence focusing and convexly bent Bragg-crystal dispersing optics

Journal of Synchrotron Radiation
We present a modular instrument for dispersive X-ray absorption spectroscopy (DXAS) developed for the Advanced Spectroscopy Beamline at Sector 25 of the Advanced Photon Source.
Juanjuan Huang, Adam P. Tornheim, Xianbo Shi, Mark Wolfman, Yanna Chen, Steve M. Heald, Shelly D. Kelly, George E. Sterbinsky   +7 more
doaj   +1 more source

X-ray detector based on a bulk micromachined photodiode combined with a scintillating crystal [PDF]

, 2003
This paper reports the design, fabrication, assembly and testing of a x-ray detector based on a bulk micromachined photodiode (BMMPD) with a cavity filled with a scintillating crystal.
Ramos, N. F., Costa, M F, Evans, A. G. R., Rocha, J G, Evans, A G R, Schabmueller, C G J, Correia, J H, Costa, Manuel F. M., Lanceros-Mendez, S, Lanceros-Méndez, S., Wolffenbuttel, R F, Rocha, J. G., Schabmueller, C. G. J., Correia, J. H., Wolffenbuttel, R. F., Ramos, N F   +15 more
core   +1 more source