Results 111 to 120 of about 62,716 (304)

Surfaces for micrometeoroid impact crater detection [PDF]

Surfaces for micrometeroid impact crater ...
Brownlee, D. E., Hodge, P. W.
core   +1 more source

Linking Pulse‐Duration‐Controlled Laser Nanostructuring to Oxygen Evolution Kinetics in Fe‐enriched NiOx Electrodes

Small, EarlyView.
Pulse‐duration‐controlled ultra‐short laser processing is shown to directly create binder‐free Fe‐enriched NiOx electrodes with tunable porosity, active‐site density, and oxygen‐evolution kinetics. Shorter pulses generate defect‐rich nanostructures that accelerate charge transfer, promote highly active NiFeOOH formation, and deliver durable alkaline ...
Sandra Susan Koshy, Jyotisman Rath, Amirkianoosh Kiani   +2 more
wiley   +1 more source

Evolution of a meteorite crater as a process of random displacements [PDF]

An examination of the ages and sizes of 114 terrestrial impact craters shows that their aging kinetics can be described by the diffusion laws. The macrodiffusion coefficient which determines random displacements of mineral masses on the Earth has a mean ...
Dabizha, A. I., Zotkin, I. T.
core   +1 more source

On de-Sitter geometry in crater statistics

, 2012
The cumulative size-frequency distributions of impact craters on planetary bodies in the solar system appear to approximate a universal inverse square power-law for small crater radii.
Benz, G. W. Gibbons, Garriga, Gault, Gibbons, Graf, Hartmann, M. C. Werner, Marchi, Marcus, Marcus, Michael, Takayasu, Timerding, Werner   +14 more
core   +1 more source

Tailoring Laser Powder Bed Fusion and Post‐Processing Parameters for JIS SKD61 Tool Steels: Surface Roughness, Microstructure, and Mechanical Properties

steel research international, EarlyView.
Laser powder bed fusion of JIS SKD61 tool steel is systematically optimized using a Taguchi design and ANOVA. Hatch spacing and layer thickness are identified as dominant parameters controlling surface roughness and tensile strength. Subsequent tempering at 600°C improves microstructural stability and mechanical performance, enabling high‐density SKD61
Masrurotin Masrurotin, Andi Ard Maidhah, Maziar Ramezani, Wojciech Macek, Cho‐Pei Jiang   +4 more
wiley   +1 more source

Experimental evidence for non-proportional growth of large craters [PDF]

Evidence from laboratory impact experiments is indicating that increasing crater aspect ratios (diameter:depth) can result from increasing both velocity and projectile size without invoking unusual impactor conditions.
Gault, Donald E., Schultz, Peter H.
core   +1 more source

The effect of the oceans on the terrestrial crater size-frequency distribution: Insight from numerical modeling

, 2007
From the proceedings of the Workshop on Impact Craters as Indicators for Planetary Environmental Evolution and Astrobiology held in June 2006 in Östersund, Sweden.On Earth, oceanic impacts are twice as likely to occur as continental impacts, yet the ...
Amsden, Artemieva, Artemieva, Baldwin, Bland, Bland, Bland, Bottke, Collins, Collins, Collins, Collins, Dalwigk, Dence, Gault, Grieve, Halliday, Ivanov, Ivanov, Ivanov, Ivanov, Kyte, Melosh, Melosh, Nemtchinov, O'Keefe, Oberbeck, Ormö, Ormö, Ormö, Poag, Poag, Schmidt, Shuvalov, Shuvalov, Shuvalov, Shuvalov, Wünnemann, Wünnemann, Wünnemann, Wünnemann   +40 more
core   +1 more source

Plasticity in parental care: Interspecific competitor cues shape biparental cooperation in a burying beetle

Journal of Animal Ecology, EarlyView.
Our study contributes to our understanding of the effects of interspecific competition in species with biparental care where male and female parents must somehow coordinate their response to interspecific competition. Abstract Interspecific competition is an important evolutionary driver of many species' life histories and behaviours, arising wherever ...
Casey Patmore, Per T. Smiseth
wiley   +1 more source

Simulated meteorite impacts and volcanic explosions: Ejecta analyses and planetary implications [PDF]

Past cratering studies have focused primarily on crater morphology. However, important questions remain about the nature of crater deposits. Phenomena that need to be studied include the distribution of shock effects in crater deposits and crater walls ...
Gratz, A. J., Nellis, W. J.
core   +1 more source

EU Space Law and Earth's Boundaries: Integrating Environmental Impact Assessment and Corporate Due Diligence

Global Policy, EarlyView.
ABSTRACT The European Union's proposed Space Law aims to establish a unified approach for sustainable space activities across the EU. While the EU's satellite constellations contribute to sustainability efforts, they can also have negative environmental impacts.
Elena Cirkovic, Vitali Braun
wiley   +1 more source