Results 21 to 30 of about 321,315 (316)

Improved Reconstruction Technique for Moiré Imaging Using an X-Ray Phase-Contrast Talbot–Lau Interferometer

open access: yesJournal of Imaging, 2018
X-ray phase-contrast imaging is a promising method for medical imaging and non-destructive testing. Information about the attenuation, small-angle scattering and phase-shifting properties of an object can be gained simultaneously in three image ...
Maria Seifert   +8 more
doaj   +1 more source

Accelerators and detectors [PDF]

open access: yesReviews of Modern Physics, 1999
The developing understanding of particle physics, especially in the past 60 or so years, has been largely paced by the evolution of high-energy accelerators and detectors. We restrict ourselves here to describing crucial developments in accelerators related to high-energy particle collisions.
W. K. H. Panofsky, M. Breidenbach
openaire   +1 more source

Transient and steady-state response properties of movement detectors [PDF]

open access: yes, 1989
Egelhaaf M, Borst A. Transient and steady-state response properties of movement detectors. Journal of the Optical Society of America, A: Optics, Image Science, and Vision.
Egelhaaf, M.   +3 more
core   +2 more sources

Directional Tuning Curves, Elementary Movement Detectors, and the Estimation of the Direction of Visual Movement [PDF]

open access: yes, 1990
Both the insect brain and the vertebrate retina detect visual movement with neurons having broad, cosine-shaped directional tuning curves oriented in either of two perpendicular directions.
Hateren, J.H. van, Hateren, J.H. van,
core   +1 more source

Microwave Power Detection With Voltage-Gated Graphene

open access: yesIEEE Open Journal of Nanotechnology, 2020
Commercially available, chemical vapor deposition grown, graphene has been used to realize voltage-gate tunable, microwave power detectors. Corbino disc structures with chrome/gold contacts have been fabricated on top of graphene deposited on P-type ...
Michael R. Gasper   +4 more
doaj   +1 more source

Impact of nitrogen annealing on the electrical properties of HgCdTe epitaxial films

open access: yesMaterials Research Express, 2023
The nitrogen annealing of HgCdTe materials grown by molecular beam epitaxy (MBE) was carried out to manipulate their electrical properties. The results show that the annealing temperature, annealing time and cooling process all have significant ...
Dapeng Jin   +4 more
doaj   +1 more source

Methane-specific gas detectors: the effect of natural gas composition [PDF]

open access: yes, 2010
Certain gas sensors, particularly those based on optical spectroscopy, have enabled the detection of individual gas species such as methane with low cross-sensitivity to other gases.
Hodgkinson, Jane   +3 more
core   +1 more source

Measurement of the cosmic optical background using the long range reconnaissance imager on New Horizons

open access: yesNature Communications, 2017
The cosmic optical background is an important cosmological observable. Here the authors show that a direct observation of the background brightness from the outer solar system can be obtained by the LORRI instrument aboard the New Horizons mission, on ...
Michael Zemcov   +5 more
doaj   +1 more source

Fast Training Data Generation for Machine Learning Analysis of Cosmic Ray Showers

open access: yesIEEE Access, 2023
Applying Machine Learning (ML) methods for the analysis of muon lateral distributions in Extensive Air Showers detected by citizen science projects, while taking into account the spatial distribution of detectors requires enormous training data sets ...
Tomasz Hachaj   +2 more
doaj   +1 more source

Experimental determination of cross-talk between neutron detectors [PDF]

open access: yes, 1992
Neutron cross-talk measurements have been performed with 14.1 MeV neutrons for organic scintillator detectors with n-gamma discrimination capability. The probability for cross-talk between two 156 mm thick neutron detectors with a hexagonal cross section
Jonson, Björn,   +23 more
core   +1 more source

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