Results 91 to 100 of about 33,066 (291)

Overview of free-piston Stirling engine technology for space power application [PDF]

open access: yes, 1987
An overview is presented of free-piston Stirling engine activities, directed toward space power applications. One of the major elements of the program is the development of advanced power conversion.
Slaby, Jack G.
core   +1 more source

Propionibacterium acnes evades microbicidal phagocytosis by inhibiting the mitochondrial biogenesis of nucleus pulposus cells

open access: yesThe FEBS Journal, Volume 293, Issue 1, Page 295-317, January 2026.
P. acnes infection impairs the mitochondrial biogenesis of nucleus pulposus cells (NPCs) through the AMPK/SIRT‐1/PGC‐1α signaling pathway. This results in impaired mitochondria that are unable to generate sufficient ATP, and impaired delivery of mitochondrial reactive oxygen species to carry out the bactericidal process effectively.
Lemeng Ren   +9 more
wiley   +1 more source

Component improvement of free-piston Stirling engine key technology for space power [PDF]

open access: yes
The successful performance of the 25 kW Space Power Demonstrator (SPD) engine during an extensive testing period has provided a baseline of free piston Stirling engine technology from which future space Stirling engines may evolve. Much of the success of
Alger, Donald L.
core   +1 more source

Stirling Module Development Overview [PDF]

open access: yes, 1984
The solar parabolic dish Stirling engine electrically generating module consists of a solar collector coupled to a Stirling engine powered electrical generator.
Livingston, F. R.
core   +1 more source

Localized and Transient Oxygenation of Shallow Oceans of Southwestern Laurentia at the Ediacaran–Cambrian Boundary

open access: yesGeobiology, Volume 24, Issue 1, January/February 2026.
ABSTRACT The Ediacaran–Cambrian boundary, which precedes one of the most significant biotic diversification events in Earth's history, is associated with a global negative carbon isotope excursion termed the BAsal Cambrian carbon isotope Excursion (BACE).
Watsawan Chanchai   +6 more
wiley   +1 more source

Overview of the 1986 free-piston Stirling activities at NASA Lewis Research Center [PDF]

open access: yes
An overview of the NASA Lewis Research Center's free-piston Stirling engine research is presented, including efforts to improve and advance its design for use in specific space power applications.
Alger, Donald L.
core   +1 more source

The hearing capabilities of the Dromornithidae (Aves), with inferences on acoustic communication and ecology

open access: yesJournal of Anatomy, Volume 248, Issue 1, Page 82-93, January 2026.
The preservation of bony structures which enclose the hearing organs (ECD) provide a basis for interpreting the hearing capabilities of the extinct, flightless Dromornithidae (Aves). Although the length of the dromornithid ECD was especially short, relative to basicranial length, it conformed to the negative allometric scaling relationships observed in
Phoebe L. McInerney   +2 more
wiley   +1 more source

Ceramic applications in the advanced Stirling automotive engine [PDF]

open access: yes
The ideal cycle, its application to a practical machine, and the specific advantages of high efficiency, low emissions, multi-fuel capability, and low noise of the stirling engine are discussed.
Cairelli, J. E., Tomazic, W. A.
core   +1 more source

A Thematic Qualitative Synthesis on the Lived Experiences of Patients With Left Ventricular Assist Devices: A Journey From Vulnerability to Resilience

open access: yesNursing in Critical Care, Volume 31, Issue 1, January 2026.
ABSTRACT Background Left ventricular assist devices (LVADs) are increasingly used in managing advanced heart failure. While their clinical benefits are well documented, less is known about how patients experience living with such life‐sustaining devices. Understanding these experiences is essential for holistic, person‐centred nursing care.
Dimitra Koutsavli   +5 more
wiley   +1 more source

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