Results 41 to 50 of about 14,263 (225)

Effect of Cr2AlC content on the properties of a Cu-Cr2AlC composite

Results in Physics, 2016
A Cu-Cr2AlC composite material is prepared by low-temperature hot-press sintering and the electrical properties of the composite material are discussed in this paper.
Xin-sheng Wang, Zhen-lin Lu, Gao-ting Lin, Lei Jia, Jiang-xian Chen   +4 more
doaj   +1 more source

Valley floor aeolianite in an equatorial pit crater on Mars [PDF]

Geophysical Research Letters, 2016
AbstractHigh and low albedo lineations in a valley entering a pit in Lucaya crater are overlain by a currently immobile dune field. We propose that they are an aeolianite that formed as the overlying dunes migrated. Implicit in this is the suggestion that available water promoted early cementation of evaporitic minerals.
M. C. Bourke, H. A. Viles
openaire   +2 more sources

Planet Four: Terrains - Discovery of Araneiforms Outside of the South Polar Layered Deposits

, 2017
We present the results of a systematic mapping of seasonally sculpted terrains on the South Polar region of Mars with the Planet Four: Terrains (P4T) online citizen science project.
Allen, Campbell, Allen, Sarah, Aye, Klaus-Michael, Calef III, Fred J., Duca, Simone, Hansen, Candice J., McMaster, Adam, Miller, Grant R. M., Portyankina, Ganna, Schwamb, Megan E.   +9 more
core   +1 more source

Mechanisms of Laser Ablation in Liquids and Their Impact on the Efficiency of Nanoparticle Generation

Laser &Photonics Reviews, EarlyView.
Laser ablation in liquid enables nanoparticle synthesis from diverse materials but remains less energy‐efficient than ablation in air. This study quantifies the absorption‐corrected ablation efficiency and experimentally confirms redeposition as the key loss mechanism using pump‐probe microscopy.
Maximilian Spellauge, David Redka, Alexander Podhrazsky, Katharina Eckmann, Constanze Eulenkamp, Oliver Koepp, Carlos Doñate‐Buendia, Bilal Gökce, Stephan Barcikowski, Heinz Paul Huber   +9 more
wiley   +1 more source

The Cratering History of Asteroid (2867) Steins

, 2010
The cratering history of main belt asteroid (2867) Steins has been investigated using OSIRIS imagery acquired during the Rosetta flyby that took place on the 5th of September 2008.
Asphaug, Asphaug, B. Davidsson, Belton, Belton, Benz, Bottke, Bottke, C. Barbieri, Chapman, Chapman, F. Marzari, Farinella, G. Cremonese, Greenberg, Greenberg, H.U. Keller, Haruyama, Hiesinger, Hirata, Holsapple, Holsapple, Jutzi, Keller, Keller, Lazzarin, M. Küppers, M. Massironi, Marchi, Marchi, Marchi, Michel, Nolan, O’Brien, P. Lamy, Richardson, Richardson, S. Besse, S. Marchi, S. Mottola, Saito, Scheeres, Veverka, Veverka   +43 more
core   +3 more sources

Efficient and Adaptive Autonomous Guidance and Control of Planetary Rover With Improved Traction Controller and Dynamic Cost Map

Journal of Field Robotics, EarlyView.
ABSTRACT Planetary exploration is rapidly gaining importance within the space research community. Autonomous locomotion of rovers requires consideration of several mobility aspects to ensure safety, including avoiding hazardous areas that can cause the robot to become immobilized in soft soil or damaged in sharp terrains.
Alessio De Luca, Luca Muratore, Nikos G. Tsagarakis, Martin Azkarate   +3 more
wiley   +1 more source

A Tool for Prioritizing Gravel Augmentation Reaches for Sediment Starved Rivers

River Research and Applications, EarlyView.
ABSTRACT Gravel augmentation is a widely used restoration technique used to improve habitat below dams, including salmonids spawning habitat. However, gravel augmentation can be cost‐prohibitive, and it is often unclear which stream segments have the highest potential to benefit spawning salmonids.
Patricia J. Wohner, Peter A. Samarin, James T. Peterson   +2 more
wiley   +1 more source

Volcanic deposits from mount Etna (Italy) as high-fidelity lunar simulants for In-Situ Resource Utilization (ISRU) applications

Materials Today Advances
Terrestrial analogues of lunar regolith are crucial for developing In-Situ Resource Utilization (ISRU) technologies and testing mission hardware before lunar deployment.
Giacomo Melchiori, Francesco Santoro De Vico, Alice Dottori, Riccardo Pozzobon, Luca Valentini, Patrizia Ferretti, Alessandro Bonetto, Michéle Lavagna, Sonia Calvari, Matteo Massironi   +9 more
doaj   +1 more source

The thermal signature of Aso Volcano during unrest episodes detected from space and ground-based measurements

Earth, Planets and Space, 2018
The thermal signature of Aso Volcano (Nakadake) during unrest episodes has been analyzed by combining the MODIS-MIROVA data set (2000–2017) with high-resolution images (LANDSAT 8 OLI and Sentinel 2) and ground-based thermal observations (2013–2017).
Corrado Cigolini, Diego Coppola, Akihiko Yokoo, Marco Laiolo   +3 more
doaj   +1 more source

Impact crater morphology and the structure of Europa's ice shell

, 2017
We performed numerical simulations of impact crater formation on Europa to infer the thickness and structure of its ice shell. The simulations were performed using iSALE to test both the conductive ice shell over ocean and the conductive lid over warm ...
Johnson, Brandon C., Silber, Elizabeth A.   +1 more
core   +1 more source