Results 21 to 30 of about 7,037,410 (298)

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi   +5 more
wiley   +1 more source

Advanced analytical facilities : report of the Planetary Materials and Geochemistry Working Group [PDF]

open access: yes, 1988
The role of advanced analytical facilities; upgrading/replacement of the existing facilities; the relationship of advanced facilities to the present program; and possible facilities are examined.
Planetary Materials and Geochemistry Working Group.
core  

Influence of TiC and TiN Ceramic Reinforcements on the Microstructure, Thermal Expansion Behavior, and Tensile Properties of Invar 36 Manufactured by Laser Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji   +3 more
wiley   +1 more source

Earth and Mars Interior Structures Set by Remelting of the First Solid Mantle

open access: yesThe Astrophysical Journal Letters
Magma-ocean crystallization sets up the early structure and long-term evolution of terrestrial planets. Recent seismic evidence signals the presence of a silicate layer at the base of Mars’s mantle. Magma-ocean crystallization and subsequent overturn has
Antonio Manjón-Cabeza Córdoba   +2 more
doaj   +1 more source

A structural law of planetary systems [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2008
The present article gives a detailed analysis of a little known phenomenological structural formula of the Solar system proposed by Kirill Butusov. It is demonstrated that this structural law may also exist in an extra-solar system – 55 Cancri.
openaire   +1 more source

Feasibility and Limitations of the Advanced Replica Process for Bioactive Glasses

open access: yesAdvanced Engineering Materials, EarlyView.
Periodic 3D‐printed Kelvin‐cell templates enable a controlled advanced replica process for fabricating highly porous glass lattices. Across P45K9, 45S5, and 13–93, material‐dependent differences in coating, burnout, and shrinkage lead to distinct strut morphologies, while comparable final porosities of 83%–88% are retained.
Swantje Funk   +4 more
wiley   +1 more source

Quantitative Sensitivity Assessment of Martian Geodetic Parameters to Interior Model: Implications for Joint Inversion

open access: yesThe Astrophysical Journal
Geodetic parameters are widely used in joint inversion to infer the interior structure of planets. However, joint inversion often involves complex parameterizations that may be computationally costly.
Runze Fu   +7 more
doaj   +1 more source

Filamentary structures in planetary nebulae

open access: yesAstrophysics and Space Science, 2007
We have studied small-scale, filamentary features in 14 planetary nebulae and found that some structures are recurrent and shaped like the letters V and Y, with the apex or stem pointing toward the central parts of the nebula. Two such filaments containing dust, one in NGC 3132 and one in NGC 7293, were investigated in more detail. The mass and density
Hanna Dahlgren   +2 more
openaire   +2 more sources

Conference on Deep Earth and Planetary Volatiles [PDF]

open access: yes, 1994
The following topics are covered in the presented papers: rare gases systematics and mantle structure; volatiles in the Earth; impact degassing of water and noble gases from silicates; D/H ratios and H2O contents of mantle-derived amphibole megacrysts ...

core  

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

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