Results 141 to 150 of about 3,241 (305)

Strong turbulent flow in the subauroral region in the Antarctic can deteriorate satellite-based navigation signals. [PDF]

Sci Rep
Kotova DS, Sinevich AA, Chernyshov AA, Chugunin DV, Jin Y, Miloch WJ.   +5 more
europepmc   +2 more sources

Intercomparison of carbon‐13 and carbon‐14 tracer approaches for estimating marine calcification and net primary production

Limnology and Oceanography: Methods, EarlyView.
Abstract Accurate measurements of phytoplankton net primary production (NPP) and calcification are essential for quantifying marine carbon cycling, yet in situ calcification rates remain poorly constrained. We compared 13C‐ and 14C‐based tracer methods for NPP in laboratory cultures of the diatom Chaetoceros tenuissimus and the coccolithophore ...
Chloe L. Smith, Austin Grubb, Kay D. Bidle, Kimberlee Thamatrakoln, Adam V. Subhas   +4 more
wiley   +1 more source

The Scintillations of Radium

Science, 1904
n ...
openaire   +3 more sources

Equatorial scintillations experienced during Apollo 13 support, 30 March - 18 April 1970 [PDF]

, 1970
Equatorial scintillations experienced during Apollo 13 support by ATS 1 - 30 Mar., to 18 Apr ...
Kuegler, G. K.
core  

Storage duration and water type determine the need for mercury chloride preservation of dissolved inorganic carbon

Limnology and Oceanography: Methods, EarlyView.
Abstract To quantify aquatic carbon budgets, it is important to accurately measure dissolved inorganic carbon (DIC). The standard approach requires the use of mercury chloride (HgCl2) poison to preserve samples, but the real need and overall constraints of using such a toxic compound remain elusive. Here, we evaluate the need for filtration and mercury
Roberta B. R. Prado, Isaac R. Santos, Samuel Scott‐Askin, Gloria M. S. Reithmaier   +3 more
wiley   +1 more source

A Novel Ionospheric Disturbance Index to Evaluate the Global Effect on BeiDou Navigation Satellite System Signal Caused by the Moderate Geomagnetic Storm on May 12, 2021. [PDF]

Sensors (Basel), 2023
He L, Guo C, Yue Q, Zhang S, Qin Z, Zhang J.   +5 more
europepmc   +1 more source

Zero‐Dimensional Perovskite‐Inspired Scintillator‐Based High‐Radiation‐Resistant Radionuclide Analyzer Free From Irreversible Degradation

Laser &Photonics Reviews, EarlyView.
A zero‐dimensional perovskite‐inspired scintillator (Cs3Cu2I5) is developed as a high‐radiation‐resilient radionuclide analyzer capable of operating under extreme γ‐ray environments. Even after 200 kGy irradiation, the device fully restores its original spectroscopic performance through simple thermal annealing, demonstrating intrinsic defect ...
Jiwon Seo, Seungho Song, Youngjoo Park, Dakyoung Lee, Sang Hyun Nam, Chanho Kim, Young‐Hoon Kim, Kisung Lee, Beomjun Park, Jung‐Yeol Yeom   +9 more
wiley   +1 more source

Global Ionospheric Scintillation Estimation Based on Phase Screen Modeling From One‐Dimensional Satellite Data

Space Weather
Ionospheric scintillations, which usually manifest as sudden, rapid fluctuations in radio wave signal phase and amplitude, challenge the reliability of satellite communication and navigation.
Yuhao Zheng, Chao Xiong, Luca Spogli, Rayan Iman, Lucilla Alfonsi   +4 more
doaj   +1 more source

Host–Dopant Engineering of Ce4+‐Dominant Y3(Al,Ga)5O12:Ce,Mg Scintillators for High‐Performance X‐Ray Imaging

Laser &Photonics Reviews, EarlyView.
Mg2+ co‐doping strongly suppresses defect‐related emission and luminescence from trace impurities. Moreover, Mg2+ co‐doping improves the scintillation performance of Y3Al3Ga2O12:Ce by increasing the light yield and accelerating the decay time.
Hisato Suezumi, Kei Kamada, Karol Bartosiewicz, Masao Yoshino, Liudmila Gushchina, Vladimir Babin, Yevheniia Smortsova, Nadiya Zhutova, Vladimir Pankratov, Alena Beitlerova, Martin Nikl, Kohei Nakanishi, Rikito Murakami, Satoshi Ishizawa, Yuui Yokota, Akira Yoshikawa   +15 more
wiley   +1 more source

Comparison of Simulated and Measured Power of the Earth-Space Link for Satellite-Based AIS Signals. [PDF]

Sensors (Basel), 2023
Dong X, Yuan Z, Sun F, Zhu Q, Sun M, Zhu P.   +5 more
europepmc   +1 more source