Results 81 to 90 of about 109,917 (327)

Long-Endurance Mars Exploration Flying Vehicle: A Project Brief

open access: yesAerospace, 2023
The paper presents specifications for the Long-Endurance Mars Exploration Flying Vehicle (LEMFEV), which will be used as future design input data. The specifications are based on the analysis of previous Mars missions and scientific data collected by the
Elena Karpovich   +4 more
doaj   +1 more source

The trapped heavy noble gases in recently found Martian meteorites [PDF]

open access: yes, 2002
The composition of the trapped Ar, Kr, and Xe in the Martian meteorites Los Angeles, Say Al Uhaymir 005/008, and 094 is discussed and found to be consistent with a mixture of Martian mantle and atmosphere noble gases and terrestrial ...
Busemann, H., Eugster, O.
core  

Effect of the Net Charges Carried by Dust on Martian Atmospheric Temperature

open access: yesGeophysical Research Letters, 2023
Dust particles suspended in the dusty Martian atmosphere are prone to being charged. In this paper, we investigate the effect of the net charges carried by dust particles on the radiative properties of Martian dust.
Xuebang Gao, Li Xie, Jùn Zhou
doaj   +1 more source

Perchlorate and Agriculture on Mars

open access: yesSoil Systems, 2021
Perchlorate (ClO4−) is globally enriched in Martian regolith at levels commonly toxic to plants. Consequently, perchlorate in Martian regolith presents an obstacle to developing agriculture on Mars.
Christopher Oze   +8 more
doaj   +1 more source

Constructing citizenship and indigeneity in Jordan: The politics of Bedouin rights and identities in cultural heritage sites

open access: yesThe Geographical Journal, EarlyView.
Short Abstract This paper explores the relationships between Bedouin rights, citizenship and indigeneity in cultural heritage sites in Jordan. Through interviews and ethnographic fieldwork with Bedouin communities, we argue that a more critical engagement with indigeneity is necessary in Jordan.
Taraf Abu Hamdan, Olivia Mason
wiley   +1 more source

Towards a global model of the martian atmosphere [PDF]

open access: yes, 2003
In an effort to continuously improve the capabilities of the Martian atmospheric predictions at LMD, the GCM has been extended into thermospheric heights thus creating the first model to self-consistently couple the lower and upper regions of the ...
Angelats i Coll, M.   +7 more
core  

Comparison of Two Methods for Determination of Rhenium and Platinum‐Group Elements in Meteorites Using On‐Line and Off‐Line Matrix Separation Modes

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points PEEK tubing has been observed to adsorb Pd and Pt ions, resulting in significantly reduced recoveries of Pd and Pt elements. HPA‐S provides a more effective dissolution for meteorite samples than Carius tube digestion, resulting in higher mass fractions for PGE.
Yuling Zeng   +2 more
wiley   +1 more source

Applications of Electrified Dust and Dust Devil Electrodynamics to Martian Atmospheric Electricity

open access: yesSpace Science Reviews, 2016
Atmospheric transport and suspension of dust frequently brings electrification, which may be substantial. Electric fields of 10 kV m−1 to 100 kV m−1 have been observed at the surface beneath suspended dust in the terrestrial atmosphere, and some ...
Richard Harrison   +14 more
semanticscholar   +1 more source

Outgassing History and Escape of the Martian Atmosphere and Water Inventory [PDF]

open access: yes, 2015
The evolution and escape of the martian atmosphere and the planet’s water inventory can be separated into an early and late evolutionary epoch. The first epoch started from the planet’s origin and lasted ∼500 Myr.
H. Lammer   +13 more
semanticscholar   +1 more source

Perchlorates on Mars enhance the bacteriocidal effects of UV light

open access: yesScientific Reports, 2017
Perchlorates have been identified on the surface of Mars. This has prompted speculation of what their influence would be on habitability. We show that when irradiated with a simulated Martian UV flux, perchlorates become bacteriocidal.
Jennifer Wadsworth, Charles S. Cockell
doaj   +1 more source

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