Results 221 to 230 of about 892,130 (360)

MRI and Implant Safety at Low‐Field and Ultralow‐Field Strengths

open access: yesJournal of Magnetic Resonance Imaging, Volume 63, Issue 2, Page 364-377, February 2026.
ABSTRACT Despite its unequivocal value in radiological diagnosis, access to conventional high‐field MRI systems remains extremely uneven across the world. Access is particularly limited in underfunded and remote settings, due to the high cost and infrastructure requirements of MRI systems.
Emre Kopanoglu   +7 more
wiley   +1 more source

Experimental demonstration of an end-burning swirling flow hybrid rocket engine

open access: yesAerospace Science and Technology, 2019
J. Lestrade   +3 more
semanticscholar   +1 more source

Appearance of impact starting of the flow in exhaust diffuser used for altitude rocket engine tests [PDF]

open access: bronze, 2019
Vyacheslav Sergeevich Zakharov   +5 more
openalex   +1 more source

Real Heights of SuperDARN F Region Echoes Inferred From Electron Density Measurements by the Rankin Inlet and RISR‐C Radars

open access: yesRadio Science, Volume 61, Issue 2, February 2026.
Abstract This study is one of the first attempts to estimate statistically the real height of SuperDARN F region echoes in the polar cap. To achieve this, measurements of the electron density in the scattering volume of the Rankin Inlet SuperDARN radar are compared with the electron density profiles measured by the incoherent scatter radar RISR‐C ...
Alexander V. Koustov   +3 more
wiley   +1 more source

702 Dynamic Characteristics of Turbopump Inducer for Rocket Engine

open access: bronze, 2011
Arimoto Yusuke   +5 more
openalex   +2 more sources

Sustainable Water Systems in Space: A Review of Current Technologies and Future Prospects

open access: yesWater Resources Research, Volume 62, Issue 2, February 2026.
Abstract Sustainable water management is a critical challenge in space exploration, where the limited availability of resources requires innovative approaches to ensure astronauts' survival on long‐duration missions. This narrative review explores the key technologies and methods involved in water recycling, in situ resource utilization (ISRU), and ...
David Bamidele Olawade   +2 more
wiley   +1 more source

Evaluating Investment in Space Programs: A Case for Theoretical Pluralism

open access: yesFinancial Accountability &Management, Volume 42, Issue 1, Page 19-35, February 2026.
ABSTRACT A perennial question repeatedly asked since the early Mercury (USA) and Salyut (then Soviet Union) space programs has been variations on the theme of “how can the cost of space exploration be justified?” This question—which in broad terms constitutes the research question considered in this paper—continues to be directed toward space agencies ...
Basil P. Tucker, Hank C. Alewine
wiley   +1 more source

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