Results 161 to 170 of about 64,161 (296)
Ecography, Volume 2026, Issue 5, May 2026.The ecological niche concept is fundamental to understanding species distributions but often overlooks the demographic processes shaping said distributions. Conversely, demographic theory has traditionally neglected how vital rates vary and covary across environments, limiting our understanding of population dynamics across species' ranges.
Sean E. H. Pang +5 more
wiley +1 more source
Space reactor/Stirling cycle systems for high power lunar application [PDF]
An analysis is performed to mathematically model a 550 kWe lunar base power supply which uses a SP-100 reactor coupled with Stirling converters. The reactor is placed in an excavation to keep activated coolant in the hole and to allow maintenance of the ...
Mason, Lee S., Schmitz, Paul C.
core +1 more source
Element concentrations in tissues reveal spatial structure of Atlantic walrus management stocks
The Journal of Wildlife Management, Volume 90, Issue 4, May 2026.Differences in tissue element concentrations confirm geographic differentiation between 2 of Canada's walrus management stocks but reveal additional spatial structure within the largest stock that may have management implications. Abstract Ensuring harvested animal populations are managed at appropriate scales requires an understanding of underlying ...
Alexander M. Jardine +3 more
wiley +1 more source
Stirling Convertor System Dynamic Model Developed [PDF]
Free-piston Stirling convertors are being developed for potential use on NASA exploration missions. In support of this effort, the NASA Glenn Research Center has developed the Stirling convertor System Dynamic Model (SDM).
Lewandowski, Edward J. +1 more
core +1 more source
Stance and Gait Analysis of Apollo Astronauts on the Moon
Muscle &Nerve, Volume 73, Issue 5, Page 746-754, May 2026.ABSTRACT Introduction/Aim As humans return to the Moon, safe efficient ambulation and fall prevention on the lunar surface are key concerns. The analysis of gait from archived Apollo mission video footage is now possible with pose estimation video analysis software.
Faye Y. Chiou‐Tan +4 more
wiley +1 more source
An Analysis of the Strayton Engine, a Brayton and Stirling Cycle Recuperating Engine [PDF]
This paper explores the novel Strayton engine concept. This engine combines the cycles of a Brayton engine with that of a Stirling engine to create a highly efficient recuperating gas turbine engine.
Chapman, Jeffryes W. +2 more
core +1 more source
Nursing Open, Volume 13, Issue 5, May 2026.ABSTRACT Aim This study explored the occupational hazards faced by nurses in a district hospital in Ghana, analysed their psychological outcomes, and examined how emotional labour mediates nurses' behaviour in patient care. Design A focused ethnographic study.
Perpetual N. B. Kodom +2 more
wiley +1 more source
Development of a Stirling System Dynamic Model With Enhanced Thermodynamics [PDF]
The Stirling Convertor System Dynamic Model developed at NASA Glenn Research Center is a software model developed from first principles that includes the mechanical and mounting dynamics, the thermodynamics, the linear alternator, and the controller of a
Lewandowski, Edward J. +1 more
core +1 more source