Results 191 to 200 of about 414,153 (280)

Delayed Exposures and Pre‐Exposure Periods in Self‐Controlled Case Series Studies

Statistics in Medicine, Volume 45, Issue 10-12, May 2026.
ABSTRACT A key assumption of the self‐controlled case series (SCCS) method is that exposures should not depend on the event of interest. However, treatments such as vaccines may be deferred after an adverse health event. One suggestion to handle such delayed exposures is to include a pre‐exposure window in the SCCS model.
Heather Whitaker, Yonas Ghebremichael Weldeselassie, Paddy Farrington   +2 more
wiley   +1 more source

Spectral efficient and high data rate ring topology based UWOC system with carrier-free optical add-drop nodes. [PDF]

PLoS One
Armghan A, Chaoui S, Alsharari M, Aliqab K, Ghafoor S, Ijaz M, Mirza J.   +6 more
europepmc   +1 more source

Electrothermal Twisted and Coiled Polymer Artificial Muscles and Their Applications in Soft Robotics

Small Structures, Volume 7, Issue 5, May 2026.
Researchers develop a PE@SPN electrothermal polymer artificial muscle with a parallel‐stranded spiral structure. A temperature self‐sensing‐driven hierarchical closed‐loop fractional order PID (FOPID) control scheme is adopted. A rehabilitation manipulator was designed, and subsequently, a series of experiments are conducted to test the performance of ...
Yali Han, Xiaopeng Zheng, Yang Li, Junjie Wang, Yu Zhao, Xiang Zhou, Zunfeng Liu   +6 more
wiley   +1 more source

Microvibration Testing and Decoupling for Space Payloads with Large Inertia, High Stiffness, and Discrete Interfaces. [PDF]

Sensors (Basel)
Jiang R, Liang W, Wang L, Su H, Zhang Y, Jiang T, Du J, Zhang A.   +7 more
europepmc   +1 more source

Calibration and Performance of the High Resolution Volatiles and Minerals Moon Mapper (HVM3) on Lunar Trailblazer

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract This article reports on the initial calibration and performance of the High‐resolution Volatiles and Minerals Moon Mapper (HVM3 ${\mathrm{H}\mathrm{V}\mathrm{M}}^{3}$), slated for launch on the National Aeronautics and Space Administration's Lunar Trailblazer mission.
David R. Thompson, Bethany L. Ehlmann, Robert O. Green, Gregory D. Allen, Holly Bender, Djuna Copley‐Woods, Michael Eastwood, Mark Helmlinger, Christopher Hummel, Jared Keller, Andrew Klesh, Ian McKinley, Bradley D. Moore, Pantazis Mouroulis, Shriya Nadgauda, Michael Sondheim, Jose Rodriguez, Charles Sarture, Calina Seybold, Vritika Singh, Christopher Smith, Peter Sullivan, Quentin Vinckier, Walton Williamson, Shannon Kian G. Zareh, Neil Bowles, Angela M. Dapremont, Kerri L. Donaldson Hanna, Christopher S. Edwards, Emily Felder, Elise Furlan, Garni Gharibian, Christopher Haberle, Martha House, Rachel L. Klima, Jasper Miura, Carle Pieters, Elena Scire, Kierra Wilk   +38 more
wiley   +1 more source

A tidal disruption event from an intermediate-mass black hole revealed by comprehensive multi-wavelength observations. [PDF]

Nat Commun
Wang J, Huang M, Xue Y, Jiang N, Huang S, Wang Y, Zhu J, Zhu S, Dai L, Jin C, Luo B, Shu X, Sun M, Wang T, Zou F.   +14 more
europepmc   +1 more source

Constraining Electron‐Impact Ionization of O2 Through UV Aurora Observations at Ganymede

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract While photoionization rates of Ganymede's O2 ${\mathrm{O}}_{2}$ dominated atmosphere are well constrained, the contribution of electron‐impact ionization is rather uncertain. Previous quantitative estimates have relied on assumptions about densities and energy distributions of precipitating electrons, or on rare spacecraft measurements that ...
Stefan Duling, Joachim Saur, Darrell Strobel, Philippa Molyneux, Jamey R. Szalay, Thomas K. Greathouse   +5 more
wiley   +1 more source

Real-Time Reconstruction of the Temperature Field of NSRT's Back-Up Structure Based on Improved RIME-XGBoost. [PDF]

Sensors (Basel)
Zhang SJ, Xu Q, Wang H, Xue F, He FL, Cao XM.   +5 more
europepmc   +1 more source

The Impact of the Sulfur Allotropes and Sulfur Hydrides on the Venus Cloud Chemistry

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Venus is home to vivid sulfur chemistry, with SO2 ${\text{SO}}_{2}$ as the major sulfur gas species and a global cloud layer between 47 and 70 km composed of H2SO4 ${\mathrm{H}}_{2}{\text{SO}}_{4}$ and H2 ${\mathrm{H}}_{2}$O. The chemistry in the clouds has been extensively studied with 1D models, but none is able to reproduce the three orders
Maxence Lefèvre, Franck Lefèvre, Anni Määttänen, Robert Skog, Benjamin Frandsen, Aurélien Stolzenbach, Ashwin Braude   +6 more
wiley   +1 more source

Correlation between active regions' spectra at high radio frequencies and solar flare occurrences. [PDF]

Sci Rep
Mulas S, Pellizzoni A, Marongiu M, Marcucci A, Righini S, Iacolina MN, Egron E, Murtas G, Bachetti M, Berrilli F, Cabras A, Caocci R, Deiana GL, Guglielmino SL, Haggerty C, Ladu A, Loru S, Maccaferri A, Marongiu P, Melis A, Navarrini A, Orfei A, Ortu P, Pili M, Pisanu T, Pupillo G, Saba A, Schirru L, Serra G, Tiburzi C, Valente G, Zanichelli A, Zucca P, Messerotti M.   +33 more
europepmc   +1 more source