Results 51 to 60 of about 975,965 (363)
Influence of X-ray radiation on the hot star wind ionization state and on the radiative force [PDF]
, 2016 Hot stars emit large amounts of X-rays, which are assumed to originate in the supersonic stellar wind. Part of the emitted X-rays is subsequently absorbed in the wind and influences its ionization state. Because hot star winds are driven radiatively, the modified ionization equilibrium affects the radiative force.
arxiv +1 more source
An x-ray polarimeter for hard x-ray optics [PDF]
SPIE Proceedings, 2006 12 pages, 7 ...
Muleri Fabio +27 more
openaire +5 more sources
Biology, 2023 Radiation-induced bystander response (RIBR) is a response induced in non-irradiated cells that receive bystander signals from directly irradiated cells. X-ray microbeams are useful tools for elucidating the mechanisms underlying RIBR. However, previous X-
Masanori Tomita +3 more
doaj +1 more source
COVID-19 Lung Lesion Segmentation Using a Sparsely Supervised Mask R-CNN on Chest X-rays Automatically Computed from Volumetric CTs [PDF]
arXiv, 2021 Chest X-rays of coronavirus disease 2019 (COVID-19) patients are frequently obtained to determine the extent of lung disease and are a valuable source of data for creating artificial intelligence models. Most work to date assessing disease severity on chest imaging has focused on segmenting computed tomography (CT) images; however, given that CTs are ...
arxiv
X-ray reflection in a sample of X-ray bright ultraluminous X-ray sources [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We apply a reflection-based model to the best available XMM-Newton spectra of X-ray bright UltraLuminous X-ray (ULX) sources (NGC 1313 X-1, NGC 1313 X-2, M 81 X-6, Holmberg IX X-1, NGC 5408 X-1 and Holmberg II X-1). A spectral drop is apparent in the data of all the sources at energies 6-7 keV.
Andrew C. Fabian, M. D. Caballero-Garcia
openaire +4 more sources
Finding Gravitational Lenses With X-rays [PDF]
, 1999 There are $\sim 1$, 0.1 and 0.01 gravitationally lensed X-ray sources per square degree with soft X-ray fluxes exceeding $10^{-15}, 10^{-14}$ and $10^{-13} ergs/s cm^{-2}$ respectively.
Boyle B. J. +7 more
core +3 more sources
Quiet Sun X-rays as Signature for New Particles [PDF]
Astrophys.J. 607 (2004) 575-580, 2004 We have studied published data from the Yohkoh solar X-ray mission, with the purpose of searching for signals from radiative decays of new, as yet undiscovered massive neutral particles. This search is based on the prediction that solar axions of the Kaluza-Klein type should result in the emission of X-rays from the Sun direction beyond the limb with a
arxiv +1 more source
Dose-Response, 2020 Background: We aimed to reveal if low dose X-rays would induce harmful or beneficial effect or dual response on biological cells and whether there are conditions the radiation can enhance gene transfer efficiency and promote cell growth but without ...
Zhuo Wang, Ming-Yue Lv, Yao-Xiong Huang
doaj +1 more source
Journal of Family Medicine and Primary Care, 2022 Background: Acute abdomen is the most commonly attended surgical emergency. It can be caused by intra-abdominal, extra-abdominal and metabolic causes.
Pradeep Sharma +4 more
doaj +1 more source
Extended range X-ray telescope [PDF]
, 1981 An X-ray telescope system is described which is comprised of a tubular mount having a collecting region remote from the one axial end. A soft X-ray/XUV subsystem associated with the collecting region directs only relatively soft, near on-axis X-rays/XUV ...
Hoover, R. B.
core +1 more source