Results 61 to 70 of about 124,456 (313)
Cutting-Edge High-Power Ultrafast Thin Disk Oscillators
Applied Sciences, 2013 A growing number of applications in science and industry are currently pushing the development of ultrafast laser technologies that enable high average powers.
Thomas Südmeyer +10 more
doaj +1 more source
A Different Perspective on the Solid Lubrication Performance of Black Phosphorous: Friend or Foe?
Advanced Engineering Materials, EarlyView.Researchers investigate black phosphorous (BP) as a standalone solid lubricant coating through ball‐on‐disc linear‐reciprocating sliding experiments in dry conditions. Testing on different metals shows BP doesn't universally reduce friction and wear. However, it achieves 33% friction reduction on rougher iron surfaces and 23% wear reduction on aluminum.
Matteo Vezzelli +5 more
wiley +1 more source
Vortices in Thin, Compressible, Unmagnetized Disks [PDF]
The Astrophysical Journal, 2005 8 pages, 10 figures (high resolution figures available in ApJ electronic edition)
Bryan M. Johnson, Charles F. Gammie
openaire +4 more sources
Advanced Engineering Materials, EarlyView.Additive manufacturing is a promising route for the production of Ni‐base superalloys for turbine applications, such as Inconel 718. Nonetheless, it induces various changes in the microstructure and performance of these materials. One such change is the incidence of the δ‐Ni3Nb phase, whose impact on microstructure, aging precipitate fractions, and ...
Guilherme Maziero Volpato +8 more
wiley +1 more source
Improving the thin-disk models of circumstellar disk evolution. The 2+1-dimensional model [PDF]
A&A 606, A5 (2017), 2017 Circumstellar disks of gas and dust are naturally formed from contracting pre-stellar molecular cores during the star formation process. To study various dynamical and chemical processes that take place in circumstellar disks prior to their dissipation and transition to debris disks, the appropriate numerical models capable of studying the long-term ...
arxiv +1 more source
Enhanced Electrochemical Properties of Biobased Activated Carbon for Supercapacitors
Advanced Engineering Materials, EarlyView.Biobased activated carbons with diverse properties (pore size distribution, electrical conductivity, capacitance) for supercapacitors applications are synthesized and tested, using renewable biomass as versatile raw materials with disparate inherent heteroatom and molecular building blocks.
Shengfei Zhou +4 more
wiley +1 more source
Revista Integración, 2008 The first fully integrated explicit exact solution of Einstein's field equations corresponding to the superposition of a counterrotating dust disk with a central black hole is presented.
Guillermo A. Gonzàlez +1 more
doaj +2 more sources
Fluorine Abundances in Local Stellar Populations
The Astronomical JournalWe present the first fluorine measurements in 12 normal K giants belonging to the Galactic thin and thick disks using spectra obtained with the Phoenix infrared spectrometer on the 2.1 m telescope at Kitt Peak. Abundances are determined from the (1−0) R9
K. E. Brady +4 more
doaj +1 more source
Elemental Abundance Survey of The Galactic Thick Disk [PDF]
Mon.Not.Roy.Astron.Soc.367:1329-1366,2006, 2005 [Abridged abstract] We have performed an abundance analysis for 176 F- and G- dwarfs of the Galactic thick disk component. Using accurate radial velocities combined with $Hipparcos$ astrometry, kinematics (U, V, and W) and Galactic orbital parameters were computed. We estimate the probability for a star to belong to the thin disk, the thick disk or the
arxiv +1 more source
Advanced Engineering Materials, EarlyView.This article presents the development of Fe‐Mn‐Zn nanocrystalline alloys (0–9 wt% Zn) by mechanical alloying and subsequently hot pressing. Their microstructure, density, hardness, wear resistance, corrosion behavior, and antibacterial properties are systematically examined.
Ilker Emin Dag +3 more
wiley +1 more source