Results 91 to 100 of about 316,883 (321)

Amplitude scintillation detection with geodetic GNSS receivers leveraging machine learning decision tree

Satellite Navigation
The amplitude scintillation detection is typically achieved by using the scintillation index generated by dedicated and costly ionospheric scintillation monitoring receivers (ISMRs).
Wang Li, Yiping Jiang, Hongyuan Ji, Wenqiang Wei   +3 more
doaj   +1 more source

Minimum-Entropy Autofocusing Based on Re-PSO for Ionospheric Scintillation Mitigation in P-Band SAR Imaging

IEEE Access, 2019
The spaceborne synthetic aperture radar (SAR) system working at P-band, is vulnerable to the ionospheric effect. The ionospheric scintillation will introduce random phase fluctuations into the SAR signal and deteriorate the imaging performance.
Lei Yu, Yongsheng Zhang, Qilei Zhang, Yifei Ji, Zhen Dong   +4 more
doaj   +1 more source

Scintillations And Microlensing [PDF]

Symposium - International Astronomical Union, 1996
It is shown how the theory of scintillation may be applied to treat gravitational lensing. The theory is applied to microlensing by a system of N point masses. It is shown that scintillation theory reproduces a known result for the angular broadening due to multiple microlensing.
openaire   +1 more source

Fluorinated Carnitine Derivatives as Tools to Visualise Carnitine Transport and Metabolism

Advanced Science, EarlyView.
Fluorinated carnitines, fluoromethyl carnitine (FMC) and [18F]fluoromethyl carnitine ([18F]FMC), are synthesised and established as powerful probes to interrogate carnitine biology. The multimodal detection facilitated by fluorine labelling, including 19F NMR, mass spectrometry, and positron emission tomography imaging, allowed for visualisation of ...
Richard S. Edwards, Ella‐May Hards, Sofia N. dos Santos, Hannah E. Greenwood, Madeleine E. George, Andrea Emanuelli, Muhammet Tanc, Thomas R. Eykyn, Timothy H. Witney   +8 more
wiley   +1 more source

Twisted Growth, Component Segregation and Characteristics of Gd₃(Al,Ga)₅O₁₂:Ce Scintillation Crystal [PDF]

, 2020
Meng Meng, Qiang Qi, Dongzhou Ding, Chongjun He, Shuwen Zhao, Bo Wan, Lu Chen, Junjie Shi, Guohao Ren   +8 more
openalex   +1 more source

Imperfection in Semiconductors Leading to High Performance Devices

Advanced Science, EarlyView.
Crystalline perfection is typically pursued in semiconductors to enhance device performance. However, through modeling and experimental work, we show that defects can be strategically employed in a specific detection regime to increase sensitivity to extreme values. GaN diodes are demonstrated to effectively detect high‐energy proton beams at fluxes as
Jean‐Yves Duboz, Matilde Siviero, Lucas Lesourd, Eric Frayssinet, Sebastien Chenot, Petter Hofverberg, Sullivan Marafico, Marie Vidal, Maxime Hugues   +8 more
wiley   +1 more source

Optically‐Coupled X‐Ray Computed Laminography System for High‐Speed Inspection of Lithium‐Ion Batteries

Advanced Science, EarlyView.
This study presents an optically coupled X‐ray computed laminography system for high‐speed inspection of lithium‐ion batteries. A scintillator serving as a virtual detector decouples spatial resolution from the X‐ray focal spot size, enabling defect detection even with large‐spot, high‐power X‐ray tubes.
Jaeyoung Im, Jun Heo, Seunguk Cheon, Jichan Kim, Sung Oh Cho   +4 more
wiley   +1 more source

Ionospheric Irregularities Related to Scintillation During Geomagnetic Storm in March, April, 2023 Over Indonesia

JIF (Jurnal Ilmu Fisika)
This study aims to analyze ionospheric irregularities in plasma structures on scales above 400 meters–several kilometers associated with scintillation using GPS satellite signal observation techniques.
Angelikus Olla, Fernince Ina Pote, Asnawi Husin   +2 more
doaj   +1 more source

Flexible composite scintillators based on ZnWO4 micro- and nanopowders

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2019
Nano-sized and micro-sized ZnWO4 powders were obtained by different methods: hydrothermal synthesis with microwave heating, molten salt method, solid-state synthesis and сrushing of bulk crystals.
V. Tinkova, A. Yakubovskaya, I. Tupitsyna, S. Abashin, A. Puzan, S. Tretyak   +5 more
doaj   +1 more source