Results 31 to 40 of about 7,697,292 (326)

Simultaneous optical polarimetry and X-ray observations of the magnetic CV CP Tuc (AX J2315--592) [PDF]

open access: yes, 1999
CP Tuc (AX J2315--592) shows a dip in X-rays which lasts for approximately half the binary orbit and is deeper in soft X-rays compared with hard X-rays. It has been proposed that this dip is due to the accretion stream obscuring the accretion region from
Buckley, David   +3 more
core   +3 more sources

X-ray Observations at Gaisberg Tower

open access: yesAtmosphere, 2018
We report the occurrence of X-rays at ground level due to cloud-to-ground flashes of upward-initiated lightning from Gaisberg Tower, in Austria, which is located at an altitude of 1300 m.
Pasan Hettiarachchi   +5 more
doaj   +1 more source

Sources of X-rays from galaxies [PDF]

open access: yes, 2011
Galactic X-ray emission is a manifestation of various high-energy phenomena and processes. The brightest X-ray sources are typically accretion-powered objects: active galactic nuclei and low- or high-mass X-ray binaries.
Liu   +10 more
core   +1 more source

Observation of Histone H2AX Phosphorylation by Radiation-Induced Bystander Response Using Titanium Characteristic X-ray Microbeam

open access: yesBiology, 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

The rate of X-ray-induced DNA double-strand break repair in the embryonic mouse brain is unaff ected by exposure to 50 Hz magnetic fi elds [PDF]

open access: yes, 2015
Following in utero exposure to low dose radiation (10 – 200 mGy), we recently observed a linear induction of DNA double-strand breaks (DSB) and activation of apoptosis in the embryonic neuronal stem/progenitor cell compartment.
Ahlbom IC   +30 more
core   +2 more sources

Effects of Low-Dose X-Ray on Cell Growth, Membrane Permeability, DNA Damage and Gene Transfer Efficiency

open access: yesDose-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

Towards perfectly linearly polarized x-rays

open access: yesPhysical Review Research, 2022
In recent years, high-precision x-ray polarimeters have become a key method for the investigation of fundamental physical questions from solid-state physics to quantum optics.
Kai S. Schulze   +20 more
doaj   +1 more source

Current evidence for spinal X-ray use in the chiropractic profession: a narrative review

open access: yesChiropractic & Manual Therapies, 2018
The use of routine spinal X-rays within chiropractic has a contentious history. Elements of the profession advocate for the need for routine spinal X-rays to improve patient management, whereas other chiropractors advocate using spinal X-rays only when ...
Hazel J Jenkins   +3 more
doaj   +1 more source

Multi-Lane Mirror for Broadband Applications of the Betatron X-ray Source

open access: yesPhotonics, 2021
A new generation of small-scale ultrafast X-ray sources is rapidly emerging. Laser-driven betatron radiation represents an important class of such ultrafast X-ray sources. With the sources driving towards maturity, many important applications in material
Marek Raclavský   +4 more
doaj   +1 more source

Efficient concentration of high-energy x-rays for diffraction-limited imaging resolution

open access: yes, 2017
Newly available x-ray nanobeams in synchrotron radiation facilities open new research avenues in the nanosciences. However, a significant challenge is to efficiently concentrate, particularly for high-energy x-rays, a large photon flux into a very small ...
Julio Cesar da Silva   +6 more
semanticscholar   +1 more source

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