Results 181 to 190 of about 128,880 (312)

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

Opto-Mechanical Integrated Analysis of Micro-Vibration Effects on the Imaging Performance of a Precision Optical System. [PDF]

Micromachines (Basel)
Liu R, Liang Z, Zhang Y, Li Q.
europepmc   +1 more source

Mid-Range Science Objectives for the Event Horizon Telescope [PDF]

The first images of the black holes in Sagittarius A* and M87* have created a wide range of new scientific opportunities in gravitational physics, compact objects, and relativistic astrophysics.
The Event Horizon Telescope Collaboration
core   +1 more source

Time‐stressed Bar‐tailed Godwits exploit novel prey during migratory fuelling

Ibis, EarlyView.
Long‐distance migratory birds breeding in the Arctic face challenges as earlier snowmelt shifts the timing of vital resources. To keep up with these advancements, birds will need to modify their migration. Higher fuelling rates during stopover have been identified as a critical mechanism for accelerating migration, but this requires adequate food ...
Hailley Danielson‐Owczynsky, Allert I. Bijleveld, Ran Nathan, Sivan Toledo, Roeland A. Bom   +4 more
wiley   +1 more source

Satellite megaconstellations will threaten space-based astronomy. [PDF]

Nature
Borlaff AS, Marcum PM, Howell SB.
europepmc   +1 more source

Food supplementation reduces early‐stage nest attendance under adverse weather conditions in Red Kites

Ibis, EarlyView.
Parental care strategies have evolved to ensure optimal offspring rearing under varying environmental conditions. Nest attendance is a fundamental behaviour providing protection against predators and adverse weather, but it is traded against time spent foraging.
Valentijn Serge van Bergen, Martin Urs Grüebler, Urs Gabriel Kormann, Benedetta Catitti   +3 more
wiley   +1 more source

Continued population recovery and high annual survival rates of White‐rumped Vultures in Nepal

Ibis, EarlyView.
Populations of Gyps vultures in South Asia underwent catastrophic declines caused by unintentional poisoning by the veterinary drug diclofenac. Since the drug was banned in 2006–2010, declines have halted across the region, including in Nepal. The present study updates population trends of G.
John W. Mallord, Ankit B. Joshi, Ishwari P. Chaudhary, Deelip C. Thakur, Ishana Thapa, Krishna P. Bhusal, Deu B. Rana, Bed Kumar Dhakal, Toby H. Galligan, Rhys E. Green   +9 more
wiley   +1 more source

Navigating challenges in prosthodontic rehabilitation after long‐term delay following fibula free flap reconstruction with a unique overlay removable prosthesis and large vertical dimension increase

Journal of Prosthodontics, EarlyView.
Abstract This case report highlights the experience of one maxillofacial surgical patient who delayed prosthodontic treatment for 7 years as they saved to self‐fund access to a subsidized prosthodontic service. Without the benefit of a restored opposing dentition for a prolonged period of time, maxillary occlusal plane disruption occurred as a ...
David E. McReynolds, Advan Moorthy, Leo Stassen, Osama Omer   +3 more
wiley   +1 more source

Design and Analysis of Optical Telescope Subsystem

Havacılık ve Uzay Teknolojileri Dergisi
In the realm of space exploration, there is a notable upsurge in advanced remote imaging systems, particularly in CubeSats, owing to their efficiency and increasing payload capacities.
Alper Şanlı, Tuncay Yunus Erkeç
doaj  

Performance of the Sardinia Radio Telescope Using the Dual-Polarized Cryogenic C-Low Receiver in the 4.2-5.6 GHz Frequency Band. [PDF]

Sensors (Basel)
Schirru L, Egron E, Ladu A, Gaudiomonte F, Attoli A, Cabras A, Carboni G, Loi F, Marchegiani P, Marongiu M, Mulas S, Murgia M, Pili M, Pellizzoni A, Poppi S, Schirru F, Vacca V.   +16 more
europepmc   +1 more source