Results 41 to 50 of about 304,786 (306)

Microstructure Design of Steel‐Spinel Composites via Spark Plasma Sintering Process

Advanced Engineering Materials, EarlyView.
This study illustrates how spark plasma sintering at reduced oxygen partial pressure enables controlled formation of steel‐spinel composites through tailored redox reactions and cation exchange. Comparison of the MgO–Fe2O3, steel–(MgO+Cr2O3), and steel–(MgO+Fe2O3) systems shows how oxygen activity and interface chemistry govern spinel formation, phase ...
Mahnaz Mehdizadehlima, Christian Schimpf, Stefan Martin, Olga Fabrichnaya, David Rafaja   +4 more
wiley   +1 more source

Study on Assembly Process of a Large Wind Power Gearbox

Jixie chuandong, 2016
Aiming at the three assembly process difficulties of pin hole connection between cases,planetary wheel bearing,planetary gear train of wind power increasing gearbox with the technical structure of planetary closed differential transmission,the deeply ...
You Jing, Zou Junwei, Huang Junqiong
doaj  

Simultaneous Evolutionary Fits for Jupiter and Saturn Incorporating Fuzzy Cores

The Astrophysical Journal Letters
With the recent realization that there likely are stably stratified regions in the interiors of both Jupiter and Saturn, we construct new nonadiabatic, inhomogeneous evolutionary models with the same microphysics for each that result at the present time ...
Ankan Sur, Roberto Tejada Arevalo, Yubo Su, Adam Burrows   +3 more
doaj   +1 more source

Radio Continuum Spectra of Planetary Nebulae

Galaxies, 2018
Radio continuum emission of planetary nebulae is a rich source of information about their structure and physical parameters. Although radio emission is well studied, planetary nebulae show higher spectral indices than expected for homogeneous sphere.
Marcin Hajduk, Peter A. M. van Hoof, Karolina Sniadkowska, Andrzej Krankowski, Leszek Błaszkiewicz, Bartosz Dabrowski, Albert A. Zijlstra   +6 more
doaj   +1 more source

Production of MgO/TiC Composites From MgO‐C Recyclates Using Spark Plasma Sintering

Advanced Engineering Materials, EarlyView.
Using the spark plasma sintering technique, MgO/TiC composites are manufactured from recycled MgO‐C refractories stemming from the steel production that were mixed with titanium powder. This article shows, how the size of the Ti grains and their distribution in the powder mixture affect the local carbon concentration in TiC.
Jiayan Yu, Christian Schimpf, Stefan Martin, David Rafaja   +3 more
wiley   +1 more source

Characteristic Slow‐Slip Events on the Superstition Hills Fault, Southern California

Geophysical Research Letters
The Superstition Hills Fault (SHF) exhibits a rich spectrum of slip modes, including M 6+ earthquakes, afterslip, quasi‐steady creep, and both triggered and spontaneous slow slip events (SSEs). Following 13 years of quiescence, creepmeters recorded 25 mm
Ellis J. Vavra, Yuri Fialko, Thomas Rockwell, Roger Bilham, Petra Štěpančíková, Jakub Stemberk, Petr Tábořík, Josef Stemberk   +7 more
doaj   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

A CO Survey of Young Planetary Nebulae

, 2005
We report the results of a sensitive survey of young planetary nebulae in the CO J=2-1 line that significantly increases the available data on warm, dense, molecular gas in the early phases of planetary nebula formation.
Aaquist O. B., Bachiller R., Bachiller R., Durand S., Gesicki K., Gomez Y., Gussie G. T., Huggins P. J., P. Cox, P. J. Huggins, P. Planesas, R. Bachiller, T. Forveille, Webster B. L., Weinberger R., Zijlstra A. A.   +15 more
core   +3 more sources

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

Advanced 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, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Next-generation Improvements in Giant-exoplanet Evolutionary and Structural Models

The Astrophysical Journal
Many evolutionary models of giant exoplanets still rely on simplifying assumptions that are no longer adequate, given detailed constraints from Jupiter, Saturn, and modern exoplanet observations.
Ankan Sur, Roberto Tejada Arevalo, Adam Burrows, Yi-Xian Chen   +3 more
doaj   +1 more source