Results 81 to 90 of about 232,489 (311)

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

Thermal modeling of subduction zones with prescribed and evolving 2D and 3D slab geometries

open access: yesProgress in Earth and Planetary Science
The determination of the temperature in and above the slab in subduction zones, using models where the top of the slab is precisely known, is important to test hypotheses regarding the causes of arc volcanism and intermediate-depth seismicity.
Nathan Sime   +2 more
doaj   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

open access: yesAdvanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi   +3 more
wiley   +1 more source

THE FALSE POSITIVE RATE OF KEPLER AND THE OCCURRENCE OF PLANETS [PDF]

open access: yes, 2013
The Kepler mission is uniquely suited to study the frequencies of extrasolar planets. This goal requires knowledge of the incidence of false positives such as eclipsing binaries in the background of the targets, or physically bound to them, which can ...
F. Fressin   +8 more
semanticscholar   +1 more source

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

Музыкально-математико-астрономический синтез в трудах древнегреческих ученых

open access: yesВестник музыкальной науки, 2017
В статье рассматривается проблема единства музыкально-математико-астрономических представлений античных ученых начала первого тысячелетия - неопифагорейца Никомаха и выдающегося астронома Клавдия Птолемея на основе их малоизученных трудов.
Александрова, Людмила Викторовна
doaj   +1 more source

An introductory review of the thermal structure of subduction zones: II—numerical approach and validation

open access: yesProgress in Earth and Planetary Science, 2023
The thermal structure of subduction zones is fundamental to our understanding of the physical and chemical processes that occur at active convergent plate margins. These include magma generation and related arc volcanism, shallow and deep seismicity, and
Cian R. Wilson, Peter E. van Keken
doaj   +1 more source

Water loss from terrestrial planets orbiting ultracool dwarfs: implications for the planets of TRAPPIST-1 [PDF]

open access: yes, 2016
Ultracool dwarfs (UCD) encompass the population of extremely low mass stars (later than M6-type) and brown dwarfs. Because UCDs cool monotonically, their habitable zone (HZ) sweeps inward in time.
É. Bolmont   +6 more
semanticscholar   +1 more source

The minimum mass of detectable planets in protoplanetary discs and the derivation of planetary masses from high-resolution observations. [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2016
We investigate the minimum planet mass that produces observable signatures in infrared scattered light and submillimetre (submm) continuum images and demonstrate how these images can be used to measure planet masses to within a factor of about 2. To this
G. Rosotti   +3 more
semanticscholar   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig   +2 more
wiley   +1 more source

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