Results 71 to 80 of about 2,340 (236)

The Rotation of the Planet Mercury

The Astrophysical Journal, 1966
Mercury rotational period as consequence of solar torques and equatorial asymmetry, based on radar data and model developing superharmonic ...
Giuseppe Colombo, Irwin I. Shapiro
openaire   +1 more source

Sliding Mode Control in Aerospace Applications: A Survey

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source

Balancing Iridium Speciation in Ir/NiO Single‐Atom Catalysts for Overall Water Splitting

Small, EarlyView.
An Ir8%‐NiO electrocatalyst, containing almost equimolar amounts of embedded and surface‐adsorbed iridium single atoms, delivered outstanding bifunctional OER/HER activity in alkaline, neutral and acidic media. When applied as the anode and cathode catalysts in an anion exchange membrane water electrolyser (AEMWE), Ir8%‐NiO achieved 1.0 A cm−2 at 2.02 ...
Yongfang Zhou, Yu Mao, Cuizhu Ye, Zhanghao Ren, Shanghai Wei, Hui Yang, Yufei Zhao, Anton Tadich, Aaron Marshall, Geoffrey I.N. Waterhouse   +9 more
wiley   +1 more source

Spectral Evidence for Recent/Ongoing Activity in Mercury’s Praxiteles Basin

The Planetary Science Journal
Mercury’s surface, as revealed by the MESSENGER probe, lacks distinctive absorption features in the visible–near-infrared spectral range, except for hollows that display a 630 nm feature ascribed to sulfides.
Anna Galiano, Giovanni Munaretto, Deborah L. Domingue, Cristian Carli, Gianrico Filacchione, Valentina Galluzzi, Salvatore Buoninfante, David Rothery, Fabrizio Capaccioni, Mario D’Amore, Alessandro Maturilli, Sebastien Besse, Océane Barraud, Lauren Jozwiak, Antti Penttilä, Oleg Abramov   +15 more
doaj   +1 more source

Micronuclei and Other Nuclear Abnormalities in Patella Limpet as Biomarkers of Cytogenotoxicity in Recreational Port Waters

Environmental Toxicology, EarlyView.
ABSTRACT Over the past decades, the growth in human population and economic activities has led to an increase in maritime traffic. This rise puts additional pressure on marine environments, vessel fuel spills being considered to have a major impact on the ecosystem.
Carlos Valiente‐Diaz, Eva Garcia‐Vazquez, Verónica Soto‐López   +2 more
wiley   +1 more source

Several Kilometers of Global Contraction on Mercury: A Sample‐Size Independent Assessment of Fault Strain

AGU Advances
Mercury underwent global contraction due to the sustained cooling of the planet. Positive‐relief landforms, found widespread across Mercury, are thought to be the surface expressions of thrust faults accommodating the contraction.
Stephan R. Loveless, Christian Klimczak
doaj   +1 more source

Origin and early evolution of terrestrial planet atmospheres and oceans

Terrestrial, Atmospheric and Oceanic Sciences, 2019
Planet atmospheric compositions are determined by the availability of a gas species, its molecular weight and the mass (or gravity force) of a planet. Both Mercury and the Moon are not massive enough to hold any gas species to form an atmosphere.
Lin-gun Liu
doaj   +1 more source

The Mysterious Stranger and Modern Enchantment

The British Journal of Sociology, EarlyView.
ABSTRACT Sociological accounts of modernity have long emphasized rationalization, alienation, and the attenuation of affective intensity. While these diagnoses capture crucial dynamics of modern social order, they leave underexplored a persistent and generative dimension of social life: enchantment.
Dmitry Kurakin
wiley   +1 more source

Evolution of the Mercurian Crust as Recorded in Carbon

The Planetary Science Journal
Mercury and other silicate bodies are essential for understanding planetary formation and evolution. The surface of Mercury is unique and enigmatic, yet this innermost planet remains the least explored.
Alexander J. Sonke, Mark S. Robinson
doaj   +1 more source

Making Mining Licit: Gold, Commodification, and the Everyday Performance of Law in Colombia

American Anthropologist, EarlyView.
ABSTRACT Ethnographies of resource‐making have shown that the extraction of resource value from objects is premised on obviating the emplaced lifeworlds that surrounded objects before they traveled to consumer markets. Much of this literature looks at such supply‐chain disentanglement from the viewpoint of corporate and formal regulatory practices ...
Jesse Jonkman
wiley   +1 more source