Results 31 to 40 of about 1,267 (215)

Moonlight Duration and Intensity Favour Nocturnal Activity in a Diurnal Desert Bird

Ethology, EarlyView.
Accelerometer data show that Canarian houbara bustards increase nocturnal activity two‐ to fivefold when the moon is visible, with activity rising as moonlit duration and illumination increase. Both display and non‐display behaviours peaked around full moon, reaching up to half of peak daytime levels, with males increasing visual displays during ...
Juan C. Alonso, Alberto Ucero, Inmaculada Abril‐Colón, Carlos Palacín   +3 more
wiley   +1 more source

Individual variability in activity patterns in Atlantic halibut (Hippoglossus hippoglossus) revealed using pop‐up satellite tags

Journal of Fish Biology, EarlyView.
Abstract Understanding fish behaviour and activity patterns is essential for interpreting their ecology and the processes that shape population dynamics, yet such information remains limited for wild fishes because observing individuals in situ is challenging.
Marie‐Pier Boulanger, Paul Gatti, Arnault Le Bris, Hugues P. Benoît, Dominique Robert   +4 more
wiley   +1 more source

Lunar Surface Fault-Tolerant Soft-Landing Performance and Experiment for a Six-Legged Movable Repetitive Lander

Sensors, 2021
The cascading launch and cooperative work of lander and rover are the pivotal methods to achieve lunar zero-distance exploration. The separated design results in a heavy system mass that requires more launching costs and a limited exploration area that ...
Ke Yin, Songlin Zhou, Qiao Sun, Feng Gao
doaj   +1 more source

Single-Satellite Lunar Navigation via Doppler Shift Observables for the NASA Endurance Mission

Navigation
The National Aeronautics and Space Administration (NASA) Endurance rover mission concept is designed to enable the exploration and collection of samples along a 2000-km traverse within the Moon’s South Pole-Aitken (SPA) impact basin.
Kaila M. Y. Coimbra, Marta Cortinovis, Tara Mina, Grace Gao   +3 more
doaj   +1 more source

Conceptual Design of Rover’s Mobility System for Ground-Based Model [PDF]

Journal of Astronomy and Space Sciences, 2009
In recent years, lots of studies on the planetary rover systems have been performed around space advanced agencies such as NASA, ESA, JAXA, etc. Among the various technologies for the planetary rover system, the mobility system, navigation algorithm ...
Youn-Kyu Kim, Hae-Dong Kim, Joohee Lee, Eun-Sup Sim, Sangwon Jeon   +4 more
doaj   +1 more source

Confined spaces in space: Cerebral implications of chronic elevations of inspired carbon dioxide and implications for long‐duration space travel

Experimental Physiology, EarlyView.
Abstract Cerebrovascular regulation is critically dependent upon the arterial partial pressure of carbon dioxide (PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_{\mathrm{2}}}}}$), owing to its effect on cerebral blood flow, tissue PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_{\mathrm{2}}}}}$, tissue proton concentration, cerebral metabolism and cognitive and neuronal ...
Jay M. J. R. Carr, Philip N. Ainslie, Trevor Day   +2 more
wiley   +1 more source

A Thermal and Structural Assessment of a Conceptual Lunar Micro Rover Design with the Aim of Night Survivability

Engineering Proceedings
The SAMLER-KI (Semi-autonomous Micro Rover for Lunar Exploration using Artificial Intelligence) project aims to open up further potential for future lunar micro rover missions. The focus is on the conceptual design of a micro rover with a higher level of
Leon Spies, Joel Gützlaff, Daniel Zinken, Markus Czupalla   +3 more
doaj   +1 more source

Lunar Terrestrial Analog Experiment on the Spectral Interpretations of Rocks Observed by the Yutu-2 Rover

Remote Sensing, 2022
A visible and near-infrared imaging spectrometer (VNIS) loaded by the Chang’e-4 rover is the primary method for detecting the mineral composition of the lunar surface in the landing region.
Rui Chang, Wei Yang, Honglei Lin, Rui Xu, Sheng Gou, Rong Wang, Yangting Lin   +6 more
doaj   +1 more source

Jumping on the moon as a potential exercise countermeasure

Experimental Physiology, EarlyView.
Abstract The Moon's gravitational field strength (17% Earth's gravity) may facilitate the use of bodyweight jumping as an exercise countermeasure against musculoskeletal and cardiovascular deconditioning in reduced gravity settings. The present study characterised the acute physiological and kinetic responses to bodyweight jumping in simulated Lunar ...
Patrick Swain, Filipa Santos, Luke Hughes, Dan Gordon, Nick Caplan   +4 more
wiley   +1 more source

Kinematics model of bionic wheel-legged lunar rover and its simulation analysis

, 2009
Based on the principle of double-half-revolution mechanism, a new-style bionic wheel-legged lunar rover was designed in this paper. Its mobile mechanism is comprised of four identical wheel-legged mechanisms, rover body bracket and steering brackets, etc.
Wang YM(汪永明), Wencheng Tang, Tang WC(汤文成), Xiaoliu Yu, Yu XL(余晓流), Yongming Wang   +5 more
core   +1 more source