Results 11 to 20 of about 316,883 (321)

On the Relationship between Low Latitude Scintillation Onset and Sunset Terminator over Africa

open access: yesRemote Sensing, 2021
The solar terminator is a moving boundary between day-side and night-side regions on the Earth, which is a substantial source of perturbations in the ionosphere. In the vicinity of the solar terminator, essential parameters like S4 index measurements are
Mogese Wassaie Mersha   +5 more
doaj   +1 more source

Reactive oxygen species generation in aqueous solutions containing GdVO4:Eu3+ nanoparticles and their complexes with methylene blue

open access: yesNanoscale Research Letters, 2018
It this letter, we report the study of free radicals and reactive oxygen species (ROS) generation in water solutions containing gadolinium orthovanadate GdVO4:Eu3+ nanoparticles (VNPs) and their complexes with methylene blue (MB) photosensitizer.
Kateryna Hubenko   +8 more
doaj   +1 more source

Supervised Detection of Ionospheric Scintillation in Low-Latitude Radio Occultation Measurements

open access: yesRemote Sensing, 2021
Global Navigation Satellite System (GNSS) Radio Occultation (RO) has provided high-quality atmospheric data assimilated in Numerical Weather Prediction (NWP) models and climatology studies for more than 20 years.
Vinícius Ludwig-Barbosa   +5 more
doaj   +1 more source

Study of scintillation in natural and synthetic quartz and methacrylate [PDF]

open access: yes, 2014
Samples from different materials typically used as optical windows or light guides in scintillation detectors were studied in a very low background environment, at the Canfranc Underground Laboratory, searching for scintillation. A positive result can be
Amare, J.   +17 more
core   +2 more sources

Rapid interstellar scintillation of PKS B1257-326: two-station pattern time delays and constraints on scattering and microarcsecond source structure [PDF]

open access: yes, 2006
We report measurements of time delays of up to 8 minutes in the centimeter wavelength variability patterns of the intra-hour scintillating quasar PKS 1257-326 as observed between the VLA and the ATCA on three separate epochs.
Anastasios K. Tzioumis   +7 more
core   +2 more sources

Analysis of Ionospheric Scintillation Characteristics in Sub-Antarctica Region with GNSS Data at Macquarie Island

open access: yesSensors, 2017
Ionospheric scintillation has a great impact on radio propagation and electronic system performance, thus is extensively studied currently. The influence of scintillation on Global Navigation Satellite System (GNSS) is particularly evident, making GNSS ...
Kai Guo   +3 more
doaj   +1 more source

The Effects of Dissolved Methane upon Liquid Argon Scintillation Light [PDF]

open access: yes, 2013
In this paper we report on measurements of the effects of dissolved methane upon argon scintillation light. We monitor the light yield from an alpha source held 20 cm from a cryogenic photomultiplier tube (PMT) assembly as methane is injected into a high-
Alexander, T.   +8 more
core   +2 more sources

Ce3+:Lu3Al5O12–Al2O3 optical nanoceramic scintillators elaborated via a low-temperature glass crystallization route

open access: yesJournal of Advanced Ceramics, 2023
Transparent Ce:lutetium aluminum garnet (Ce:Lu3Al5O12, Ce:LuAG) ceramics have been regarded as potential scintillator materials due to their relatively high density and atomic number (Zeff).
Jie Fu   +7 more
doaj   +1 more source

New Measurement of the Relative Scintillation Efficiency of Xenon Nuclear Recoils Below 10 keV [PDF]

open access: yes, 2009
Liquid xenon is an important detection medium in direct dark matter experiments, which search for low-energy nuclear recoils produced by the elastic scattering of WIMPs with quarks.
A. Manalaysay   +15 more
core   +2 more sources

Microarcsecond Radio Imaging using Earth Orbit Synthesis

open access: yes, 2001
The observed interstellar scintillation pattern of an intra-day variable radio source is influenced by its source structure. If the velocity of the interstellar medium responsible for the scattering is comparable to the earth's, the vector sum of these ...
Cornwell T. J.   +6 more
core   +6 more sources

Home - About - Disclaimer - Privacy