Results 71 to 80 of about 1,898,576 (291)

Signatures of Emerging Subsurface Structures in Acoustic Power Maps

open access: yes, 2010
We show that under certain conditions, subsurface structures in the solar interior can alter the average acoustic power observed at the photosphere above them.
A. G. Kosovichev   +12 more
core   +1 more source

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

open access: yesAdvanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht   +5 more
wiley   +1 more source

KNSwing—On the Mooring Loads of a Ship-Like Wave Energy Converter

open access: yesJournal of Marine Science and Engineering, 2019
The critical function of keeping a floating Wave Energy Converter in position is done by a mooring system. Several WECs have been lost due to failed moorings, indicating that extreme loads, reliability and durability are very important aspects.
Kim Nielsen, Jonas Bjerg Thomsen
doaj   +1 more source

Linear phase demodulator including a phase locked loop with auxiliary feedback loop [PDF]

open access: yes, 1976
A phase modulated wave that may have no carrier power is demodulated by a phase locked loop including a phase detector for deriving an A.C. data output signal having a magnitude and a phase indicative of the phase of the modulated wave.
Rippy, R. R.
core   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

open access: yesAdvanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai   +6 more
wiley   +1 more source

Characterization of Wave Energy Potential for the Baltic Sea with Focus on the Swedish Exclusive Economic Zone

open access: yesEnergies, 2019
In this study, a third-generation wave model is used to examine the wave power resource for the Baltic Sea region at an unprecedented one-kilometer-scale resolution for the years 1998 to 2013.
Erik Nilsson   +7 more
doaj   +1 more source

Acoustic Kappa-Density Fluctuation Waves in Suprathermal Kappa Function Fluids

open access: yes, 2007
We describe a new wave mode similar to the acoustic wave in which both density and velocity fluctuate. Unlike the acoustic wave in which the underlying distribution is Maxwellian, this new wave mode occurs when the underlying distribution is a ...
Aaron Roberts   +18 more
core   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

open access: yesAdvanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu   +5 more
wiley   +1 more source

Hydrogen Production from Wave Power Farms to Refuel Hydrogen-Powered Ships in the Mediterranean Sea

open access: yesHydrogen
The maritime industry is a major source of greenhouse gas (GHG) emissions, largely due to ships running on fossil fuels. Transitioning to hydrogen-powered marine transportation in the Mediterranean Sea requires the development of a network of hydrogen ...
Evangelos E. Pompodakis   +3 more
doaj   +1 more source

Line Force and Damping at Full and Partial Stator Overlap in a Linear Generator for Wave Power

open access: yesJournal of Marine Science and Engineering, 2016
A full scale linear generator for wave power has been experimentally evaluated by measuring the line force and translator position throughout the full translator stroke.
Liselotte Ulvgård   +3 more
doaj   +1 more source

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