Results 181 to 190 of about 2,306,852 (229)

A lunar soil evolution model

The Moon, 1975
Comminution, agglutination, and replenishment processes in a lunar soil are modeled by a system of time-dependent linear differential equations. In the model, a soil is subdivided into coarse-particle, fine-particle, and agglutinate fractions. The relative mass abundance of each component in a mature soil is found to be proportional to rates for the ...
W. W. Mendell, D. S. McKay
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Multivariate Comparison of Lunar Soil Simulants

Journal of Aerospace Engineering, 2019
Since 1960, when the first probes landed on the Moon, multiple specimens of lunar soil have been available for research.
P. Zarzycki, J. Katzer
semanticscholar   +1 more source

Impact-driven disproportionation origin of nanophase iron particles in Chang’e-5 lunar soil sample

Nature Astronomy, 2022
Chen Li, Zhuang Guo, Yang Li, Kairui Tai, K. Wei, Xiongyao Li, Jianzhong Liu, Wenhui Ma   +7 more
semanticscholar   +1 more source

Compaction of Lunar‐Type Soil

Journal of Aerospace Engineering, 1994
Soil plays an important role in the construction of foundations of roads and buildings. The utilization of soil traditionally involves the compaction of the insitu or previously loosened material t...
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Penetration resistance of lunar soils

Journal of Terramechanics, 1971
Abstract Penetration resistance, in terms of the slope G of the stress penetration curve, has been correlated with density for a basaltic lunar soil simulant. The values were measured with the standard WES 30° cone penetrometer. This lunar soil simulant has been found to possess the same penetration resistance characteristics as the Apollo ...
W.N. Houston, L.I. Namiq
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Lunar soil simulants alter macrophage survival and function

Journal of Applied Toxicology, 2019
Lunar regolith samples collected during previous Apollo missions were found to contain components that were established to be toxic to humans; however, the health effects due to inhalation of lunar soil as a whole are still unknown.
Melvin Li, K. Thompson, Jillian C. Nissen, D. Hendrix, J. Hurowitz, S. Tsirka   +5 more
semanticscholar   +1 more source

Development of soil on the lunar surface

Journal of Sedimentary Research, 1972
Abstract Meteorite flux as the primary energy source for vitrification and comminution, evolution of size and shape, accumulation ...
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A novel method for simultaneous analysis of particle size and mineralogy for Chang’E-5 lunar soil with minimum sample consumption

Science China. Earth Sciences, 2022
Kenan Cao, Mingtan Dong, Zhenbing She, Qian Xiao, Xinyi Wang, Y. Qian, YiHeng Li, Zaicong Wang, Qi He, Xiang Wu, K. Zong, Zhaochu Hu, Long Xiao   +12 more
semanticscholar   +1 more source

Magnetic separation of lunar soils

IEEE Transactions on Magnetics, 1991
The authors report measurements of the distribution by magnetic susceptibility of anorthite, ilmenite, pyroxene, and metallic iron separated from the minus 1-mm size fraction of five lunar samples using a Frantz isodynamic separator. Low-iron content, pure anorthite was separated from the feebly paramagnetic fractions of an immature anorthistic ...
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Lunar Soil Sampling and Testing

1962
The limited real data available on the lunar environment is presented and several selected references are listed. Soil is usually tested for the properties that are expected to change and differ from one environment to another, whereas the properties that are more or less in equilibrium in any terrestrial environment are not tested.
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