Results 71 to 80 of about 4,518,330 (260)

Comparative study between clinical diagnosis, plain radiography and sonography for the diagnosis of nontraumatic acute abdomen

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, Rajan Sood, Mukul Sharma, Arun K Gupta, Arun Chauhan   +4 more
doaj   +1 more source

X-RAY MONITORING OF ULTRALUMINOUS X-RAY SOURCES [PDF]

The Astrophysical Journal, 2009
X-ray monitoring observations were performed with the Swift observatory of the ultraluminous X-ray sources Holmberg IX X-1, NGC 5408 X-1, and NGC 4395 X-2 and also of the nuclear X-ray source in NGC 4395. Holmberg IX X-1 remains in the hard X-ray spectral state as its flux varies by a factor of 7 up to an (isotropic) luminosity of 2.8E40 erg/s.
Kaaret, Philip, Feng, Hua
openaire   +2 more sources

Performance of a deep learning CNN model for the automated detection of 13 common conditions on Chest X-rays [PDF]

, 2021
Background and aims: Chest X-rays are widely used, non-invasive, cost effective imaging tests. However, the complexity of interpretation and global shortage of radiologists have led to reporting backlogs, delayed diagnosis and a compromised quality of ...
Vijayalakshmi Kasiraman (11497621), Bhavani Paski (11514033), Monisha Donkena (11514045), Tirupathi Karthik (11514053), Amit Talwar (11514040), Kashyap Gurram (11514034)   +5 more
core   +1 more source

Towards perfectly linearly polarized x-rays

Physical 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, Benjamin Grabiger, Robert Loetzsch, Berit Marx-Glowna, Annika T. Schmitt, Alejandro Laso Garcia, Willi Hippler, Lingen Huang, Felix Karbstein, Zuzana Konôpková, Hans-Peter Schlenvoigt, Jan-Patrick Schwinkendorf, Cornelius Strohm, Toma Toncian, Ingo Uschmann, Hans-Christian Wille, Ulf Zastrau, Ralf Röhlsberger, Thomas Stöhlker, Thomas E. Cowan, Gerhard G. Paulus   +20 more
doaj   +1 more source

The Structure of Some Crystals as Indicated by Their Diffraction of X-rays

, 1913
A new method of investigating the structure of a crystal has been afforded by the work of Laue* and his collaborators on the diffraction of X-rays by crystals.
W. Bragg
semanticscholar   +1 more source

Identification of Rays through DNA Barcoding: An Application for Ecologists [PDF]

, 2012
DNA barcoding potentially offers scientists who are not expert taxonomists a powerful tool to support the accuracy of field studies involving taxa that are diverse and difficult to identify.
Owen O'Shea, Austin Chris M., Florencia Cerutti-Pereyra (158763), Mark G. Meekan (111192), Nu-Wei V. Wei (158766), Meekan, M., Bradshaw, C.J.A., Pereyra, Florencia Cerutti, Bradshaw, Corey J A, Meekan, Mark, Bradshaw, Corey, Bradshaw, C., Wei Nu-Wei V., Chris M Austin, O'Shea, O., Austin, Christopher, O'Shea Owen, Nu-Wei V Wei, Pereyra, Florencia, Shea, Owen, Shea, Owen O', Chris M. Austin (158773), Bradshaw Corey J. A., Wei, Nu, Wei, N-W.V., Wei, Nu Wei V, Florencia Cerutti-Pereyra, Cerutti-Pereyra, F., Austin, C., Cerutti-Pereyra Florencia, Owen O'Shea (158769), Meekan, Mark G, Corey J. A. Bradshaw (158770), Meekan Mark G., Mark G Meekan, Austin, C.M., Wei, N., Corey J A Bradshaw, Meekan, M.G., Austin, Christopher M   +39 more
core   +2 more sources

L. K. Rays [PDF]

, 2007
"NX 133694 L.K. Rays 70th Aus S/L Battery Knuckeys Lagoon".NX 133694 L.K.
Rays, L. K.
core  

On the Role of Reduced Air Density Along the Lightning Leader Path to Ground in Increasing X‐Ray Production Relative to Normal Atmospheric Conditions

Geophysical Research Letters, 2019
Mallick et al. (2012, https://doi.org/10.1029/2012JD017555) discovered that subsequent‐stroke leaders in natural negative lightning could be more prolific producers of hard X‐rays and gamma rays than the first‐stroke leader in the same flash.
M. D. Tran, I. Kereszy, V. A. Rakov, J. R. Dwyer   +3 more
doaj   +1 more source

The Reflexion of X-Rays by Crystals

, 1921
Theory of Reflection of X-rays from a Point Source, by a Perfect Crystal.\char22{}The derivation of the expression for the total reflected energy as obtained by other physicists, is given in simpler form.
H. Wilson
semanticscholar   +1 more source

High energy and high intensity electron and X-ray beams by pyroelectric effect [PDF]

, 2012
The production of x-rays has been a useful technique in many areas of science, medicine and various industries for over 100 years. Over this time various new methods of generating x-rays have been produced, allowing improved performance in existing ...
Hockley, Matthew
core