Results 11 to 20 of about 2,319,252 (294)

The X-ray Outbursts of Be/X-ray Transients [PDF]

open access: yesInternational Astronomical Union Colloquium, 2000
AbstractWe present a new scenario for the behaviour of Be/X-ray binaries based on long-term multiwavelength monitoring and the decretion disc model. The circumstellar discs of the primaries are truncated because of the tidal and resonant effect of the neutron star. The geometry of the systems and the value of viscosity determine the presence or absence
Ignacio Negueruela, Atsuo T. Okazaki
openaire   +2 more sources

Vimentin intermediate filaments stabilize dynamic microtubules by direct interactions

open access: yesNature Communications, 2021
The tasks of the cytoskeleton depend on the fine-tuned interplay between the three filamentous components: actin filaments, microtubules, and intermediate filaments.
Laura Schaedel   +4 more
doaj   +1 more source

Nondestructive cellular-level 3D observation of mouse kidney using laboratory-based X-ray microscopy with paraffin-mediated contrast enhancement

open access: yesScientific Reports, 2022
For three-dimensional observation of unstained bio-specimens using X-ray microscopy with computed tomography (CT), one main problem has been low contrast in X-ray absorption.
Naoki Kunishima   +5 more
doaj   +1 more source

In situ X-ray area detector flat-field correction at an operating photon energy without flat illumination

open access: yesJournal of Synchrotron Radiation, 2023
Flat-field calibration of X-ray area detectors is a challenge due to the inability to generate an X-ray flat-field at the selected photon energy the beamline operates at, which has a strong influence on the measurement behavior of the detector.
James Weng   +7 more
doaj   +1 more source

In situ X-ray area detector flat-field correction at an operating photon energy without flat illumination. Corrigendum

open access: yesJournal of Synchrotron Radiation, 2023
The name of an author in the article by Weng et al. (2023) [J. Synchrotron Rad. 30, 546–554] is corrected.
James Weng   +7 more
doaj   +1 more source

Scalable and accurate multi-GPU-based image reconstruction of large-scale ptychography data

open access: yesScientific Reports, 2022
While the advances in synchrotron light sources, together with the development of focusing optics and detectors, allow nanoscale ptychographic imaging of materials and biological specimens, the corresponding experiments can yield terabyte-scale volumes ...
Xiaodong Yu   +5 more
doaj   +1 more source

Radionuclide diagnosis of ureteric function in patients with stages I-IV cancer of the cervix uteri

open access: yesОпухоли женской репродуктивной системы, 2014
The experience with serial renal scintigraphy demonstrated its high informative value and safety in evaluating the severity of intrarenal urine outflow disorders; however, failure to make an objective assessment of ureteral patency considerably limits ...
L. A. Ashrafyan   +3 more
doaj   +1 more source

COMP Report: CPQR technical quality control guidelines for use of positron emission tomography/computed tomography in radiation treatment planning

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Positron emission tomography with x‐ray computed tomography (PET/CT) is increasingly being utilized for radiation treatment planning (RTP). Accurate delivery of RT therefore depends on quality PET/CT data. This study covers quality control (QC) procedures required for PET/CT for diagnostic imaging and incremental QC required for RTP.
Ran Klein   +7 more
wiley   +1 more source

Intra-nosological diagnosis of endometrial cancer

open access: yesОпухоли женской репродуктивной системы, 2014
The study is based on the analysis of comprehensive ultrasound examinations of 158 patients with a verified diagnosis of endometrial cancer (EC). It was conducted, by taking into account the concept of 3 types of microinvasive EC growth. Echosemiotics in
L. A. Ashrafyan   +3 more
doaj   +1 more source

A small footprint couch‐top support device for image‐guided radiotherapy of heavy patients

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose Patients with body weights close to or above 400 lbs present unique challenges in radiation therapy since the weight limit of most treatment couches decreases as the couch‐top extends toward the treatment gantry. The purpose of this work was to develop a small footprint couch‐top support platform to safely perform image‐guided ...
Huixiao Chen   +5 more
wiley   +1 more source

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