Results 31 to 40 of about 293,183 (274)

Review of High-resolution Imaging Techniques of Wideband Inverse Synthetic Aperture Radar

open access: yesLeida xuebao, 2020
At present, the emphasis of Inverse Synthetic Aperture Radar (ISAR) systems on the characteristics of high carrier frequency, wide bandwidth, multi-polarization capability, distribution, and networking has led to the development and progress of ISAR ...
Biao TIAN   +5 more
doaj   +1 more source

SUTO-Solar Through-Turbulence Open Image Dataset

open access: yesSensors, 2022
Imaging through turbulence has been the subject of many research papers in a variety of fields, including defence, astronomy, earth observations, and medicine. The main goal of such research is usually to recover the original, undisturbed image, in which
Adam Popowicz, Valeri Orlov
doaj   +1 more source

The survey of the Basilica di Collemaggio in L’Aquila with a system of terrestrial imaging and most proven techniques [PDF]

open access: yes, 2017
The proposed job concerns the evaluation of a series of surveys carried out in the context of a campaign of studies begun in 2015 with the objective of comparing the accuracies obtainable with the systems of terrestrial imaging, compared to unmanned ...
Allegra, Massimo   +5 more
core   +2 more sources

Type III Radio Bursts Observations on 20th August 2017 and 9th September 2017 with LOFAR Bałdy Telescope

open access: yesRemote Sensing, 2021
We present the observations of two type III solar radio events performed with LOFAR (LOw-Frequency ARray) station in Bałdy (PL612), Poland in single mode. The first event occurred on 20th August 2017 and the second one on 9th September 2017.
Bartosz Dabrowski   +9 more
doaj   +1 more source

LOFAR: Early imaging results from commissioning for Cygnus A [PDF]

open access: yes, 2011
The Low Frequency Array (LOFAR) will operate between 10 and 250 MHz, and will observe the low frequency Universe to an unprecedented sensitivity and angular resolution.
Batejat, Fabien   +21 more
core   +1 more source

Neuroinfectious Disease OSCE Station

open access: yesMedEdPORTAL, 2014
Introduction It has been stated that a headache is the most common neurological symptom. Identification of secondary headache syndromes is a critical skill for neurologists and neurology residents, especially in the emergency room setting; early ...
Penelope Smyth, Jeffrey Jirsch
doaj   +1 more source

Revisiting the T2 spectrum imaging inverse problem: Bayesian regularized non-negative least squares

open access: yesNeuroImage, 2021
Multi-echo T2 magnetic resonance images contain information about the distribution of T2 relaxation times of compartmentalized water, from which we can estimate relevant brain tissue properties such as the myelin water fraction (MWF).
Erick Jorge Canales-Rodríguez   +7 more
doaj   +1 more source

Calibration Challenges for Future Radio Telescopes [PDF]

open access: yes, 2010
Instruments for radio astronomical observations have come a long way. While the first telescopes were based on very large dishes and 2-antenna interferometers, current instruments consist of dozens of steerable dishes, whereas future instruments will be ...
Nijboer, Ronald   +3 more
core   +1 more source

Design, Synthesis, and Validation of a Novel [11C]Promethazine PET Probe for Imaging Abeta Using Autoradiography

open access: yesMolecules, 2021
Promethazine, an antihistamine drug used in the clinical treatment of nausea, has been demonstrated the ability to bind Abeta in a transgenic mouse model of Alzheimer’s disease.
Clayton A. Whitmore   +7 more
doaj   +1 more source

Multiangle observations of Arctic clouds from FIRE ACE: June 3, 1998, case study [PDF]

open access: yes, 2001
In May and June 1998 the Airborne Multiangle Imaging Spectroradiometer (AirMISR) participated in the FIRE Arctic Cloud Experiment (ACE). AirMISR is an airborne instrument for obtaining multiangle imagery similar to that of the satellite-borne MISR ...
Ackerman, TP   +6 more
core   +1 more source

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