Results 121 to 130 of about 656,950 (323)
Revisiting the Fundamental Metallicity Relation with Observation and Simulation
The Astrophysical Journal LettersThe gas-phase metallicity of galaxies is regulated by multiple astrophysical processes, which makes it a crucial diagnostic of galaxy formation and evolution.
Chengyu Ma +9 more
doaj +1 more source
Wolf-Rayet Populations at High Metallicity [PDF]
arXiv, 2006 Observed properties of Wolf-Rayet stars at high metallicity are reviewed. Wolf-Rayet stars are more common at higher metallicity, as a result of stronger mass-loss during earlier evolutionary phases with late WC subtypes signatures of solar metallicity or higher.
arxiv
Advanced Engineering Materials, EarlyView.Characterizations of the expanse of processes parameter combinations that can be used to minimize cracking and porosity while optimizing crystallization and hardness are used to assess laser processing of four glass‐forming alloys. The set of viable alloys for laser additive manufacturing is not the same as for suction casting; some alloys are common ...
Soumya Mohan +3 more
wiley +1 more source
The Astrophysical JournalBoth detailed and rapid population studies alike predict that binary black hole (BHBH) formation is orders of magnitude more efficient at low metallicity than high metallicity, while binary neutron star (NSNS) formation remains mostly flat with ...
L. A. C. van Son +8 more
doaj +1 more source
Electron Transport in Hybrid Metallic Nanostructures (Metallic Nanoelectronics) [PDF]
arXiv, 2009 A summary is given of a talk on the physics and technology of hybrid metallic nanostructures, with a view to metallic nanoelectronics. In the beginning of the talk it was noted that the majority of the presentations at the conference were not concerned with electronics but the physics of sensors, since they were devoted to studies of the influence of ...
arxiv
Advanced Engineering Materials, EarlyView.In this manuscript, the processability of X2CrNiMo17‐12‐2 powder coated with silicon carbide, silicon, and silicon nitride nanoparticles is investigated. The amount of nanoparticles varies from 0.25 to 1 vol%. By coating the powder feedstock material with nanoparticles, an enlargement of the process window and an increase in the build rate are achieved.
Nick Hantke +5 more
wiley +1 more source
The Astrophysical JournalWe use deep Spitzer mid-infrared spectroscopic maps of radial strips across three nearby galaxies with well-studied metallicity gradients (M101, NGC 628, and NGC 2403) to explore the physical origins of the observed deficit of polycyclic aromatic ...
Cory M. Whitcomb +11 more
doaj +1 more source
Characterization of exoplanet hosts
EPJ Web of Conferences, 2013 Spectroscopic analysis of exoplanet hosts and the stellar sample from which they are drawn provides abundances and other properties that quantitively constrain models of planet formation.
Valenti Jeff A.
doaj +1 more source
XIII.—The constitution of carbamides. Part V. The mechanism of the decomposition of urea when heated in solution with alkalis and with acids respectively. The hydrolysis of metallic cyanates [PDF]
, 1918 Emil Alphonse Werner
openalex +1 more source
Elastic‐Wave Propagation in Chiral Metamaterials: A Couple‐Stress Theory Perspective
Advanced Engineering Materials, EarlyView.The intrinsic chirality of chiral metamaterials renders an effective medium based on the classical continuum theory ineffective for predicting their acoustic activity. This limitation is addressed in the present study by employing augmented asymptotic homogenization to derive a couple‐stress‐based effective medium, enabling accurate predictions in the ...
Shahin Eskandari +5 more
wiley +1 more source