Results 141 to 150 of about 7,531,616 (402)

Electron beam welder X-rays its own welds [PDF]

open access: yes, 1967
Beam of an electron beam welder X rays its own welds, enabling rapid weld quality checks to be made without removing the work from the vacuum chamber. A tungsten target produces X rays when hit by the beam.
Roden, W. A.
core   +1 more source

The Reflection of X-rays by Crystals. (II.)

open access: yes, 1913
This note is a supplement to a paper on the reflection of X-rays by crystals which has been recently communicated to the Royal Society. It is there shown that the wave-length of a homogeneous beam of X-rays can be found accurately in terms of the spacing
W. Bragg
semanticscholar   +1 more source

X-ray observations of ultraluminous X-ray sources [PDF]

open access: yesAstrophysics and Space Science, 2007
Invited talk at the 5th Stromlo Symposium. 10 pages, 4 figures.
openaire   +4 more sources

Coherent hard x-rays from attosecond pulse train-assisted harmonic generation [PDF]

open access: yes, 2007
High-order harmonic generation from atomic systems is considered in the crossed fields of a relativistically strong infrared laser and a weak attosecond-pulse train of soft x-rays. Due to one-photon ionization by the x-ray pulse, the ionized electron obtains a starting momentum that compensates the relativistic drift which is induced by the laser ...
arxiv   +1 more source

X-rays from Supernova Remnants

open access: yes, 2002
A summary of X-ray observations of supernova remnants is presented including the explosion fragment A of the Vela SNR, Tycho, N132D, RX J0852-4622, the Crab Nebula and the 'bulls eye', and SN 1987A, high-lighting the progress made with Chandra and XMM ...
Aschenbach, B.
core   +1 more source

A study on role of chest X-rays in children above 5 years admitted with asthma exacerbation

open access: yesMuller Journal of Medical Sciences and Research, 2018
Context: Asthma is a heterogeneous disease characterized by chronic airway inflammation that causes airway hyperresponsiveness. The diagnosis of asthma is mainly clinical, and chest X-rays are not required for the diagnosis or grading of severity of ...
Sujonitha John   +3 more
doaj   +1 more source

X-ray phase contrast imaging of biological specimens with tabletop synchrotron radiation [PDF]

open access: yes, 2011
Since their discovery in 1896, x-rays have had a profound impact on science, medicine and technology. Here we show that the x-rays from a novel tabletop source of bright coherent synchrotron radiation can be applied to phase contrast imaging of ...
Alexander G. R. Thomas   +15 more
core   +2 more sources

Simultaneous HST/XTE Observations of Sco X-1 [PDF]

open access: yesarXiv, 1998
Sco X-1 is the brightest extra-solar point source of X-rays, and may serve as a prototype for low mass X-ray binaries as a class. It has been suggested that the UV and optical emission arise as a result of reprocessing of X-rays, and that a likely site for such reprocessing is an accretion disk around the X-ray source.
arxiv  

Tuvan pharyngealization under the X-rays

open access: yesNovye Issledovaniâ Tuvy, 2016
Comment on:Ā Selyutina I.Ya., Urtegeshev N.S., Ryzhikova T.R., Dambyra I.D., Kechil-ool S.V. Pharyngealization as a typological feature of phonological systems (on the material of the Turkic languages of South Siberia) / Publishing editor N.N. Shirobokova.
Aziana V. Bayr-ool
doaj  

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