Results 21 to 30 of about 9,301 (243)

Geochemistry of a spheroidal weathering profile in a tropical mountainous landscape, Rio de Janeiro, Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2022
Boulders are an important material in debris flow and their source is coupled with spheroidal weathering profiles that produce corestones. The goal of this work was to establish the geochemical transformations that produced corestones and distinguished ...
CARLA S. SILVEIRA   +4 more
doaj   +1 more source

A Survey on Extraterrestrial Habitation Structures with a Focus on Energy-Saving 3D Printing Techniques

open access: yesApplied Sciences, 2023
In the past two decades, various space agencies have shown great enthusiasm for constructing habitable structures on lunar and Martian surfaces. Consequently, several extraterrestrial structures have been proposed by different researchers.
Mitra Khalilidermani, Dariusz Knez
doaj   +1 more source

Bulk Density of the Lunar Regolith at the Chang'E‐3 Landing Site as Estimated From Lunar Penetrating Radar

open access: yesEarth and Space Science, 2020
Bulk density of the lunar regolith is a key factor affecting its geophysical and geotechnical properties. In this study, a new method for estimating the bulk density of the lunar regolith is developed based on the geometric characteristic (i.e ...
Wenzhe Fa
doaj   +1 more source

Efficient Haptic Rendering of Regolith [PDF]

open access: yes2021 IEEE International Conference on Robotics and Automation (ICRA), 2021
Driven by the need for physically accurate and haptically convincing models of lunar and planetary regolith for model-mediated teleoperation in space, we present an approach to modelling regolith in an efficient yet realistic way. Model parameters are derived from physical characteristics of the regolith, to render regoliths with different density ...
Pereira, Aaron, Schmidt, Annika
openaire   +3 more sources

Effect of Target Properties on Regolith Production

open access: yesRemote Sensing
Based on the measurements of regolith thicknesses on the lunar maria (basalts), the lunar regolith was determined to have accumulated at a rate of about 1 m/Gyr since the era of the late heavy bombardment.
Minggang Xie, Yan Li
doaj   +1 more source

Evidence of space weathering in regolith breccias II: Asteroidal regolith breccias [PDF]

open access: yesMeteoritics & Planetary Science, 2010
Space weathering products, such as agglutinates and nanophaase iron-bearing rims are easily preserved through lithifcation in lunar regolith breccias, thus such products, if produced, should be preserved in asteroidal regotith breccias as well. A study of representative regolith breecia meteorites, Fayetteville (H4) and Kapoeta (howardite), was ...
Carle M. Pieters   +2 more
openaire   +2 more sources

The circular nutrient economy of terrestrial ecosystems and the consequences for rock weathering

open access: yesFrontiers in Environmental Science, 2023
Earth’s biosphere is thought to exert a substantial influence on regolith evolution and chemical weathering rates. However, ecosystems are also highly efficient at retaining and recycling nutrients.
Kate Maher   +2 more
doaj   +1 more source

Making parts on Mars: Laser processing of iron contaminated by regolith simulant

open access: yesMaterials Today Advances
Manufacturing pure metals on Mars is challenging due to limited energy resources and unavoidable contamination of raw materials and production equipment with the Martian dust (regolith) resulting in impure materials.
Askar Kvaratskheliya   +8 more
doaj   +1 more source

Utilisation of Moon Regolith for Radiation Protection and Thermal Insulation in Permanent Lunar Habitats

open access: yesApplied Sciences, 2021
In the context of a sustainable long-term human presence on the Moon, solutions for habitat radiation and thermal protection with regolith are investigated.
Yulia Akisheva, Yves Gourinat
doaj   +1 more source

Structure and Formation Mechanism of Lunar Regolith

open access: yesSpace: Science & Technology
Lunar regolith is a thin layer of weakly cohesive detrital materials covering the lunar surface. Studies on returned lunar samples have revealed that the lunar regolith mainly consists of fragments of rocks, minerals, breccia, glasses, and agglutinates ...
Liping Qin   +7 more
doaj   +1 more source

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