Results 61 to 70 of about 40,059 (211)

Galactic Abundances: Report of Working Group 3 [PDF]

, 2001
We summarize the various methods and their limitations and strengths to derive galactic abundances from in-situ and remote-sensing measurements, both from ground-based observations and from instruments in space. Because galactic abundances evolve in time
Bothmer, V., Buclin, F., Christian, E. R., Cummings, A. C., Flückiger, E. O., George, J. S., Hofer, M. Y., Jones, F. C., Keller, J. W., Kirilova, D., Klecker, B., Kunow, H., Laming, M., Salerno, E., Sofia, U. J., Stone, E. C., Thielemann, F.-K., Tranquille, C., Wenzel, K.-P., Wiedenbeck, M. E.   +19 more
core   +1 more source

A Technique for Retrieving the Exospheric Number Density Distribution from Pickup Ion Ring Distributions

The Planetary Science Journal
Ion pickup by the solar wind is ubiquitous in space plasma. Because pickup ions are originally produced by ionization of an exospheric neutral atmosphere, their measurements contain information on the exospheric neutral abundance.
Kei Masunaga, Naoki Terada, François Leblanc, Yuki Harada, Takuya Hara, Shotaro Sakai, Shoichiro Yokota, Kanako Seki, Atsushi Yamazaki, James. P. McFadden, Tomohiro Usui   +10 more
doaj   +1 more source

The Pickup Ion-mediated Solar Wind

The Astrophysical Journal, 2018
Abstract The New Horizons Solar Wind Around Pluto (NH SWAP) instrument has provided the first direct observations of interstellar and He pickup ions (PUIs) at distances between ∼11.26 and 38 au in the solar ...
G. P. Zank, L. Adhikari, L.-L. Zhao, P. Mostafavi, E. J. Zirnstein, D. J. McComas   +5 more
openaire   +1 more source

In Vivo Imaging With a Low‐Cost MRI Scanner and Cloud Data Processing in Low‐Resource Settings

NMR in Biomedicine, Volume 39, Issue 6, June 2026.
This study presented the system evolution at MUST: (a) Scanner after the initial assembly in 2023. (b) First reconstructed image (bell pepper). Front (c), rear (d), and global (e) views of the MUST scanner in the 2025 configuration, highlighting the improved electronics setup, RF coils, and mechanical integration.
Teresa Guallart‐Naval, Robert Asiimwe, Patricia Tusiime, Mary A. Nassejje, Leo Kinyera, Lemi Robin, Maureen Nayebare, Luiz G. C. Santos, Marina Fernández‐García, Lucas Swistunow, José M. Algarín, John Stairs, Michael Hansen, Ronald Amodoi, Andrew Webb, Joshua Harper, Steven J. Schiff, Johnes Obungoloch, Joseba Alonso   +18 more
wiley   +1 more source

Terrestrial Analogs to Titan for Geophysical Research

Reviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon, Samuel Birch, Audrey Chatain, Charles Cockell, Kendra K. Farnsworth, Peter M. Higgins, Stéphane Le Mouélic, Rosaly M. C. Lopes, Michael J. Malaska, Mohit Melwani Daswani, Kelly E. Miller, Catherine D. Neish, Olaf G. Podlaha, Jani Radebaugh, Lauren R. Schurmeier, Ashley Schoenfeld, Krista M. Soderlund, Anezina Solomonidou, Christophe Sotin, Nicholas A. Teanby, Tetsuya Tokano, Steven D. Vance   +21 more
wiley   +1 more source

Physical origin of pickup currents [PDF]

Annales Geophysicae, 2016
So-called pickup electric currents, associated with the ionization of neutral particles in the presence of a flowing plasma, are conventionally described as produced directly by differential displacement of ions and electrons as the result of ...
V. M. Vasyliūnas
doaj   +1 more source

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

Advanced Engineering Materials, Volume 28, Issue 10, 20 May 2026.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar, Jana Hubálková, Steffen Dudczig, Gert Schmidt, Florian Kerber, Thomas Schemmel, Patrick Gehre, Christos G. Aneziris   +7 more
wiley   +1 more source

A mapping approach to synchronization in the "Zajfman trap": stability conditions and the synchronization mechanism [PDF]

, 2002
We present a two particle model to explain the mechanism that stabilizes a bunch of positively charged ions in an "ion trap resonator" [Pedersen etal, Phys. Rev. Lett. 87 (2001) 055001].
Blümel R, Church D A, Dahan M, David J Tannor, Dehmelt H, Grobe R, Levine M A, Marshall A G, Paul W, Pedersen H B, Pedersen H B, Pedersen H B, Percival I, Strasser D, Strasser D, Taylor J R, Tihamér Geyer, Yu N, Zajfman D   +18 more
core   +2 more sources

Injection Process of Pickup Ion Acceleration at an Oblique Heliospheric Termination Shock

The Astrophysical Journal Letters
The injection process of pickup ion acceleration at a heliospheric termination shock is investigated. Using two-dimensional fully kinetic particle-in-cell simulation, accelerated pickup ions are self-consistently reproduced by tracking long time ...
Shuichi Matsukiyo, Yosuke Matsumoto
doaj   +1 more source

Pickup protons at quasi-perpendicular shocks: full particle electrodynamic simulations [PDF]

Annales Geophysicae, 2007
We have performed 3 one-dimensional full particle electromagnetic simulations of a quasi-perpendicular shock with the same Alfvén Mach number MA~5, shock normal-magnetic field angle ΘBn=87° and ion and electron beta (particle to magnetic ...
S. Matsukiyo, M. Scholer, M. Scholer, D. Burgess   +3 more
doaj   +1 more source