Results 81 to 90 of about 26,504 (226)

Self‐Oscillation in Photochromic Thiazolothiazole‐Embedded Polymers

Advanced Photonics Research, Volume 7, Issue 9, September 2026.
Experimental observation of redox‐driven self‐oscillations at the soft‐matter/ambient interface of a photochromic thiazolothiazole‐embedded polymer by spectroscopic ellipsometry. The self‐oscillations are facilitated by a reversible electron transfer cycle involving the thiazolothiazole unit, a cross‐linked polymer matrix, and ambient molecular oxygen.
Nuren Z. Shuchi, Tyler J. Adams, Naz F. Tumpa, Dustin Louisos, Tom Tiwald, Glenn D. Boreman, Michael G. Walter, Tino Hofmann   +7 more
wiley   +1 more source

A Low‐Power Radioisotope XRF Spectrometer for Detection of Light Elements on Planetary Missions

X-Ray Spectrometry, Volume 55, Issue 5, Page 721-729, September/October 2026.
ABSTRACT Current X‐ray spectrometers for in situ geochemical analysis on planetary missions typically rely either on X‐ray tubes, which demand electrical power and add mass and thermal complexity, or on alpha particle X‐ray spectrometers (APXS) that use rare 244 Cm sources, and come with severe concerns on radiation safety and isotope availability.
Leandro Silveri, Artem Knyazev, Hashem Alaidaros, Maryam Manzoor Amanullah, Zach Ioannou, Tengiz Ibrayev, Danish Khan, Sara Leardini, Laura Manenti, Simi Maria Emilia Mangani, Safa Naseem, Sandhya Sharma, Sara Trevisan, Alia Zino, Francesco Arneodo   +14 more
wiley   +1 more source

Cyanobacteria Sustain Deep Ocean Carbon Sequestration Despite Eukaryotic Loss

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract The biological carbon pump exports phytoplankton‐derived organic carbon to the deep ocean, regulating long‐term carbon sequestration and climate. Yet how phytoplankton community composition controls the magnitude and efficiency of this process remains poorly understood.
Jingjing Zhang, Guangxi Chi, Hongliang Li, Tiantian Tang, Shuh‐Ji Kao, Eric Achterberg, Wupeng Xiao, Bangqin Huang, Martin G. Wiesner, Niko Lahajnar, Jianfang Chen   +10 more
wiley   +1 more source

Geochronological Constraints on Diachronous Post‐Collisional Slab Breakoff Along the Paleo‐Tethyan Sutures

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract The slab breakoff model is a preferred geodynamic interpretation for post‐collisional exhumation and associated magmatic flare‐ups. In this study, rutile U–Pb dating of retrograde eclogites revealed distinct stages of exhumation along the Paleo‐Tethyan sutures in southwest China. The studied samples yielded ages of 246.7 ± 8.5 and 239.7 ± 14.0 
Min Liu, Hao Wu, Xi‐Jun Liu, Rong‐Guo Hu, Si‐Nan Lv, Xiao‐Xiao Hu, Yao Xiao, Hao‐Dong Wei   +7 more
wiley   +1 more source

Interaction of the central jet with the surrounding gas in the protostellar outflow from IRAS 04166+2706

Astronomy & Astrophysics
Context. The outflow from the Class 0 protostar IRAS 04166+2706 (hereafter IRAS 04166) contains a remarkably symmetric jet-like component of extremely high-velocity (EHV) gas. Aims.
Tafalla M., Johnstone D., Santiago-García J., Zhang Q., Shang H., Lee C.-F.   +5 more
doaj   +1 more source

Global Circulation of Martian Ionospheric Currents Revealed by Magnetometer Data

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract In the dynamo region of the Martian ionosphere, a large‐scale current is generated by charge separation: ions collide with neutrals while electrons preferentially gyrate around local magnetic field lines. Using MAVEN magnetometer data and a physics‐informed neural network constrained by Ampère's law and Gauss's law for magnetism (the Neural ...
T. Delcourt, A. Mittelholz
wiley   +1 more source

Biases and Uncertainties in Radiosonde‐Based Precipitable Water Vapor

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Precipitable water vapor (PWV) plays an important role in weather and climate phenomena. Accurate PWV measurements based on radiosonde observations are essential for assessing remote‐sensing measurements and long‐term trends. This study examines the performance of PWV algorithms, including their intrinsic biases and their sensitivity to ...
António P. Ferreira, Cesar Azorin‐Molina, Luis Gimeno   +2 more
wiley   +1 more source

The role of magnetar transient activity in time-domain and multimessenger astronomy

Frontiers in Astronomy and Space Sciences
Time-domain and multimessenger astronomy (TDAMM) involves the study of transient and time-variable phenomena across various wavelengths and messengers.
Michela Negro, George Younes, Zorawar Wadiasingh, Zorawar Wadiasingh, Zorawar Wadiasingh, Eric Burns, Aaron Trigg, Matthew Baring   +7 more
doaj   +1 more source

Sensitivity of the Martian Magnetotail to Model Configuration Choices in Multispecies MHD Simulations

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Numerical modeling has been a key component in the study of the Mars space environment, providing a comprehensive global representation that is not always easy to obtain in spacecraft measurements. However, there are inconsistencies in data‐model and model‐model comparisons, regardless of whether the simulation conditions are identical or ...
Nii‐Boi A. Quartey, Michael W. Liemohn, Wenyi Sun, Yingjuan Ma   +3 more
wiley   +1 more source

Geological Reasoning Across Incompatible Timescales

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Camille Thomas
wiley   +1 more source