Results 111 to 120 of about 112,404 (309)

Instrumentation to measure mars' atmospheric composition, using a soft-landed probe [PDF]

open access: yes
Instrumentation for analysis of Mars atmosphere after soft ...
Ranftl, J. W., Woods, R. O.
core   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

An Explainable Deep-learning Model of Proton Auroras on Mars

open access: yesThe Planetary Science Journal
Proton auroras are widely observed on the dayside of Mars, identified as a significant intensity enhancement in the hydrogen Ly α (121.6 nm) emission at altitudes of ∼110 and 150 km.
Dattaraj B. Dhuri   +2 more
doaj   +1 more source

Moisture in the Atmosphere of Mars [PDF]

open access: yesNature, 1904
IN your issue of May 5 I see a note in the astronomical column on Mr. Lowell's theory of the Martian canals. It is perhaps not just to criticise it on so short a summary, but there is a point on which I should like to ask a question. If, as Mr. Lowell says, there is not sufficient moisture on the planet to produce vegetation, how does the water return ...
openaire   +1 more source

Microstructure Design of Steel‐Spinel Composites via Spark Plasma Sintering Process

open access: yesAdvanced Engineering Materials, EarlyView.
This study illustrates how spark plasma sintering at reduced oxygen partial pressure enables controlled formation of steel‐spinel composites through tailored redox reactions and cation exchange. Comparison of the MgO–Fe2O3, steel–(MgO+Cr2O3), and steel–(MgO+Fe2O3) systems shows how oxygen activity and interface chemistry govern spinel formation, phase ...
Mahnaz Mehdizadehlima   +4 more
wiley   +1 more source

A Technique for Retrieving the Exospheric Number Density Distribution from Pickup Ion Ring Distributions

open access: yesThe Planetary Science Journal
Ion pickup by the solar wind is ubiquitous in space plasma. Because pickup ions are originally produced by ionization of an exospheric neutral atmosphere, their measurements contain information on the exospheric neutral abundance.
Kei Masunaga   +10 more
doaj   +1 more source

The atmosphere of Mars [PDF]

open access: yes
Effects of Mariner IV ionospheric data on Mars atmosphere composition ...
Johnson, F. S.
core   +1 more source

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

open access: yesAdvanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter   +9 more
wiley   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

The infrared spectrum of carbon suboxide. Part 1 - Region 1-2.5 microns. Part 2 - Region 2-15 microns. Part 3 - Classification of carbon suboxide vibrational bands [PDF]

open access: yes
Laboratory tests of infrared spectrum of carbon suboxide, to determine presence in Venus and Mars ...
Cruikshank, D. P.   +3 more
core   +1 more source

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