Results 31 to 40 of about 2,111,313 (164)

A New Lunar DEM Based on the Calibrated Chang’E-1 Laser Altimeter Data

Advances in Astronomy, 2018
To improve the lunar DEM accuracy derived from CE-1 altimeter data, CE-1 laser altimeter data are calibrated in this paper. Orbit accuracy and ranging accuracy are the two most important factors to affect the application of altimeter data in the lunar ...
Yong Huang, Shengqi Chang, Songhe Qin, Peijia Li, Xiaogong Hu, Min Fan   +5 more
doaj   +1 more source

Post‐flight assessment of the OSIRIS‐REx Sample Return Capsule (SRC) for organic and other potential contaminants

Meteoritics &Planetary Science, EarlyView.
Abstract Regolith samples from the carbonaceous asteroid Bennu were stowed and delivered to Earth in the OSIRIS‐REx spacecraft's Sample Return Capsule (SRC). We applied multiple analytical techniques to study the components of the post‐flight SRC, with a focus on assessing the conditions and any contaminants to which the Bennu samples were exposed ...
Scott A. Sandford, Jason P. Dworkin, Kevin Righter, Feargus A. J. Abernethy, Romain Alosius, José C. Aponte, James Ball, Eve L. Berger, Denise K. Buckner, Henner Busemann, Simon J. Clemett, George Cody, Jamie Elsila, Dionysis I. Foustoukos, Ian A. Franchi, Daniel P. Glavin, Monica M. Grady, Heather V. Graham, Philipp R. Heck, Amy E. Hofmann, Yongsong Huang, Bumsoo Kim, Daniela Krietsch, Nicole G. Lunning, Colin Maden, Hannah L. McLain, Angel Mojarro, Michel Nuevo, Philippe Schmitt‐Kopplin, Ewerton Santos, Maria Schönbächler, Christopher J. Snead, Kathie L. Thomas‐Keprta, Alexander B. Verchovsky, Harold C. Connolly Jr., Dante S. Lauretta   +35 more
wiley   +1 more source

Possible explanations for different surface quality in laser cutting with 1 micron and 10 microns beams [PDF]

, 2012
In laser　cutting　of　thick　steel　sheets,　quality　difference　is　observed　between　cut　surfaces　obtained　with 1 micron and 10 micron laser beams. This paper investigates physical mechanisms for this interesting and important problem of the wavelength ...
Remy Fabbro, Koji Hirano, FABBRO, Rémy, HIRANO, Koji   +3 more
core   +1 more source

First Use of Laser Ranging to Surface Retroreflectors for Orbit Determination: LRO-LOLA at the Moon

The Planetary Science Journal
We document the first operational demonstration of two-way spacecraft-to-surface laser ranging using Laser Retroreflector Arrays (LRAs) for orbit determination (OD) of the Lunar Reconnaissance Orbiter (LRO).
G. Cascioli, E. Mazarico, D. R. Cremons, M. K. Barker, D. Mao, S. Goossens, V. Viswanathan, S. Bertone, K. Jha, F. G. Lemoine, X. Sun, J. W. Head, D. E. Smith, M. T. Zuber   +13 more
doaj   +1 more source

A Review of Lidar Technology in China’s Lunar Exploration Program

Remote Sensing
Lidar technology plays a pivotal role in lunar exploration, particularly in terrain mapping, 3D topographic surveying, and velocity measurement, which are crucial for guidance, navigation, and control.
Genghua Huang, Weiming Xu
doaj   +1 more source

First insights into the population characteristics and seasonal occurrence of the great hammerhead shark, Sphyrna mokarran (Rüppell, 1837) in the Western Tuamotu archipelago, French Polynesia

Frontiers in Marine Science, 2023
The occurrence and seasonality of the Critically Endangered great hammerhead shark, Sphyrna mokarran, is data deficient in the Central Pacific region.
Tatiana Boube, Claire-Sophie Azam, Antonin Guilbert, Antonin Guilbert, Charlie Huveneers, Yannis P. Papastamatiou, Johann Mourier, José E. Trujillo, José E. Trujillo, Nastazia Femmami, Andréa Kunovsky, Florent Bersani, Enzo Laurent, Alice Bousseyroux, Thibaut Thellier, Thibaut Thellier, Yann Follin, Yann Follin, Thomas Pavy, Thomas Pavy, Virginie Jeandel, Alexander Mataarere, Manuella Burlot, Jordan Bouyeure, Béatrice Rigoreau, Laurent Rigoreau, Audrey Lenormand, Farid Chalabi, Marc Hayek, Jean-Marie Jeandel, Pierre-Louis Stenger, Pierre-Louis Stenger   +31 more
doaj   +1 more source

Sex differences in cerebral blood flow and cardiac function in response to exercise in the heat

Experimental Physiology, EarlyView.
Abstract We investigated the effect of exercising in hot conditions on cerebral blood flow and systolic left ventricular (LV) function in males and females, to explore sex differences. The experimental condition consisted of walking on a treadmill at 5 km/h and 2% incline, inside a heat chamber at 40°C (50% relative humidity), for 90 min.
João Carlos Locatelli, Juliene G. Costa, Kristanti W. Wigati, Jesse L. Criddle, Julie J. Collis, Xingwei Xu, Louise H. Naylor, Howard H. Carter, Shane K. Maloney, Robert A. McLaughlin, Andrew Haynes, Helen Jones, Keith George, Daniel J. Green   +13 more
wiley   +1 more source

Combination of VLBI Intensive Sessions with GNSS for generating Low latency Earth Rotation Parameters [PDF]

Advances in Geosciences, 2019
The Earth Orientation Parameters (EOPs) are published by the Earth Orientation Centre of the International Earth Rotation and Reference Systems Service (IERS). They are provided as the low-latency Bulletin A and the 30 d latency long-term EOP time
H. Hellmers, D. Thaller, M. Bloßfeld, A. Kehm, A. Girdiuk   +4 more
doaj   +1 more source

Quantifying microvascular responses to local heating using optical coherence tomography: Comparison between skin sites and sex differences

Experimental Physiology, EarlyView.
Summary of the study design, metholodgy, results and conclusions. Abstract Due to a lack of technical capacity to directly visualise and quantify microvessels in the skin, little is known regarding regional and/or sex differences. We compared diameter, velocity, flow and density at four regional sites using a novel optical coherence tomography (OCT ...
Juliene G. Costa, Kristanti W. Wigati, Louise H. Naylor, Helen Jones, Robert A. McLaughlin, Daniel J. Green   +5 more
wiley   +1 more source

Lunar motion analysis [PDF]

, 1975
This report covers activity under the subject grant during the second half of calendar year 1974. During this period, in addition to routine data identification and management activities relating to the McDonald Observatory lunar laser data, primary ...
Mulholland, J. Derral (John Derral), 1934-
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