Results 41 to 50 of about 3,725,755 (300)

Lunar and Hawaiian Physical Features Compared [PDF]

open access: yesMemoirs of the American Academy of Arts and Sciences, 1906
Special issue. ; Mode of access: Internet.
openaire   +1 more source

Morphological and morphometric aspects of the equine aortic valve: New insights for comparative studies in mammals

open access: yesThe Anatomical Record, EarlyView.
Abstract New data on the equine aortic valve obtained using advanced techniques is especially important given the greater availability of animal models for translational research. Here we characterized the morphological and morphometric aspects of the equine aortic valve from 60 healthy hearts collected at equine abattoirs.
Vitor Pires Pereira   +3 more
wiley   +1 more source

Surface Roughness of the Chang’E-5 and Chang’E-6 Lunar Samples: Implications for the Microscopic Processes Shaping the Lunar Surface

open access: yesThe Planetary Science Journal
 Although lunar surface roughness was studied extensively above micrometers before, it has not been investigated at smaller scales. In this study, we measured the surface topography of the Chang’E-5 and Chang’E-6 lunar samples by using atomic force ...
Jun Du   +16 more
doaj   +1 more source

A Study of Lunar Microwave Radiation Based on Satellite Observations

open access: yesRemote Sensing, 2020
In recent years, the study of microwave radiation from the Moon’s surface has been of interest to the astronomy and remote sensing communities.
Hu Yang, Martin Burgdorf
doaj   +1 more source

GEOMETRIC CALIBRATION OF THE CLEMENTINE UVVIS CAMERA USING IMAGES ACQUIRED BY THE LUNAR RECONNAISSANCE ORBITER [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
The Clementine UVVIS camera returned over half a million images while in orbit around the Moon in 1994. Since the Clementine mission, our knowledge of lunar topography, gravity, and the location of features on the surface has vastly improved with the ...
E. J. Speyerer   +2 more
doaj   +1 more source

Morpho‐functional analyses of the jaw apparatus in the Blue‐and‐yellow Macaw (Ara ararauna, Psittaciformes, Aves): Adaptations to feeding behavior

open access: yesThe Anatomical Record, EarlyView.
Abstract Macaws are renowned for processing dry, mechanically resistant fruits, yet the species‐level anatomical and functional correlates of this performance remain incompletely resolved. We examined the feeding apparatus of the Blue‐and‐yellow Macaw (Ara ararauna) using an integrated approach that combines osteology, myology, and bite‐force estimates
Sérgio R. Posso   +2 more
wiley   +1 more source

The Relevance of the VIPER Mission to NASA’s Artemis Human Exploration of the Moon

open access: yesThe Planetary Science Journal
NASA has ambitious plans to send astronauts to the south polar region of the Moon and explore this lunar terrain with humans for the first time through a series of Artemis missions.
Jennifer L. Heldmann   +14 more
doaj   +1 more source

Illumination Model of Lunar Terrain around Lunar Laser Retroreflectors Based on LOLA Data

open access: yesRemote Sensing
Lunar laser retroreflectors are a crucial target for lunar laser ranging (LLR). During LLR operations at all lunar laser ranging stations, the considerable distance between the Earth and the Moon makes it impossible to visually identify the position of ...
Yuzuo Li   +6 more
doaj   +1 more source

A New Global Perspective on Recent Tectonism in the Lunar Maria

open access: yesThe Planetary Science Journal
Earth’s Moon exhibits evidence that it is tectonically active. That evidence includes the Apollo Lunar Seismic Experiment detection of shallow moonquakes and the presence of geologically young tectonic features at the lunar surface. Lobate scarps are one
C. A. Nypaver   +4 more
doaj   +1 more source

DBYOLO: Dual-Backbone YOLO Network for Lunar Crater Detection

open access: yesRemote Sensing
Craters are among the most prominent and significant geomorphological features on the lunar surface. The complex and variable environment of the lunar surface, which is characterized by diverse textures, lighting conditions, and terrain variations, poses
Yawen Liu   +4 more
doaj   +1 more source

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