Results 1 to 10 of about 8,821,484 (341)

Keyhole threshold and morphology in laser melting revealed by ultrahigh-speed x-ray imaging

Science, 2019
The key to keyhole formation The formation of keyholes, or vapor-filled depressions, during laser welding presents a large problem for additive manufacturing. Cunningham et al. used high-speed x-ray imaging to take a detailed look at keyhole formation in
Ross W Cunningham, Cang Zhao, N. Parab, C. Kantzos, J. Pauza, K. Fezzaa, T. Sun, A. Rollett   +7 more
semanticscholar   +1 more source

Utilizing Quantum Annealing in Computed Tomography Image Reconstruction

IEEE Transactions on Quantum Engineering
One of the primary difficulties in computed tomography (CT) is reconstructing cross-sectional images from measured projections of a physical object. There exist several classical methods for this task of generating a digital representation of the object,
Kilian Dremel, Dimitri Prjamkov, Markus Firsching, Mareike Weule, Thomas Lang, Anastasia Papadaki, Stefan Kasperl, Martin Blaimer, Theobald O. J. Fuchs   +8 more
doaj   +1 more source

Analysis of the expression of genes involved in proliferation and apoptosis in cervical intraepithelial neoplasias and cancer of the cervix uteri

Опухоли женской репродуктивной системы, 2014
The viral nature of many female genital cancers is now beyond question. By taking into account this fact, the problem of qualitative assessment ofthenatureofcervicalintraepithelialneoplasia(CIN)anditsfocusonprogressiontoinvasivecarcinomabecomesquitenatu ...
V. K. Bozhenko, L. A. Ashrafyan, I. B. Antonova, N. V. Melnikova, O. N. Burmenskaya, D. Yu. Trofimov, E. A. Kudinova, L. Z. Khunova, A. V. Slonov, O. P. Bliznyukov   +9 more
doaj   +1 more source

(E)-1-(Benzo[d][1,3]dioxol-5-yl)-3-([2,2′-bithiophen]-5-yl)prop-2-en-1-one: crystal structure, UV–Vis analysis and theoretical studies of a new π-conjugated chalcone

Acta Crystallographica Section E: Crystallographic Communications, 2019
In the title compound, C18H12O3S2, synthesized by the Claisen–Schmidt condensation method, the essentially planar chalcone unit adopts an s-cis configuration with respect to the carbonyl group within the ethylenic bridge.
Ainizatul Husna Anizaim, Muhamad Fikri Zaini, Muhammad Adlan Laruna, Ibrahim Abdul Razak, Suhana Arshad   +4 more
doaj   +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

GYNECOLOGICAL STATUS OF PATIENTS WITH COLORECTAL CANCER

Сибирский онкологический журнал, 2016
The purpose of the study was to identify risk factors for colorectal cancer on the basis of retrospective analysis of gynecological history and status of 183 patients with colon adenocarcinoma treated at the Russian X-Ray Radiology Research Center ...
V. A. Solodky, U. Stanoevich, I. V. Stanoevich, I. A. Zelenina, V. D. Chikvadze   +4 more
doaj  

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 Polarimetry of X-ray Pulsars

Galaxies
Radiation from X-ray pulsars (XRPs) was expected to be strongly linearly polarized owing to a large difference in their ordinary and extraordinary mode opacities. The launch of IXPE allowed us to check this prediction. IXPE observed a dozen X-ray pulsars, discovering pulse-phase dependent variation of the polarization degree (PD) and polarization angle
Juri Poutanen, Sergey S. Tsygankov, Sofia V. Forsblom   +2 more
openaire   +3 more sources

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.
Philip Kaaret, Hua Feng
openaire   +3 more sources

Breast calcifications. Literature review

Опухоли женской репродуктивной системы
Breast cancer continues to maintain a leading position in the structure of the incidence of all oncological diseases among women. Early diagnosis of the disease at the stage of assessing indirect signs makes it possible in the future to maintain a good ...
O. S. Khodorovich, V. A. Solodkiy, V. O. Kleshneva, T. V. Sherstneva, K. V. Ishchenko   +4 more
doaj   +1 more source