Results 111 to 120 of about 2,661,924 (301)

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source

Electrospun ZnO/Pd Nanofibers as Extremely Sensitive Material for Hydrogen Detection in Oxygen Free Gas Phase. [PDF]

Polymers (Basel), 2022
Platonov V, Nasriddinov A, Rumyantseva M.   +2 more
europepmc   +1 more source

A new hypothesis about continuous distillation with striping gas and its application the physical refining of edible oils

Grasas y Aceites, 2009
The influence of the free fatty acid concentration in the gas inside the continuous deodorizer in continuous physical refining was studied and a hypothesis was formed to explain the results: In a continuous process of deacidification by distillation of ...
Manuel León-Camacho, J. C. Bada, Mª. M. Prieto González, E. Graciani Constante   +3 more
doaj   +1 more source

Box of ideal gas in free fall

Physics Letters B, 2013
We study the \textit{quantum} partition function of non-relativistic, ideal gas in a (non-cubical) box falling freely in arbitrary curved spacetime with centre 4-velocity u^a. When perturbed energy eigenvalues are properly taken into account, we find that corrections to various thermodynamic quantities include a very specific, sub-dominant term which ...
openaire   +3 more sources

Apparatus and method to keep the walls of a free-space reactor free from deposits of solid materials [PDF]

, 1985
An apparatus and method is disclosed for keeping interior walls of a reaction vessel free of undesirable deposits of solid materials in gas-to-solid reactions.
Yamakawa, K. A.
core   +1 more source

Slow Thermalization Between a Lattice and Free Bose Gas

, 2013
Using a 3D spin-dependent optical lattice, we study thermalization and energy exchange between two ultracold Bose gases, one of which is bound to the lattice and another that is free from the lattice potential.
Chen, David, DeMarco, Brian, McKay, David C., Meldgin, Carolyn   +3 more
core   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

Metal-catalyst-free gas-phase synthesis of long-chain hydrocarbons. [PDF]

Nat Commun, 2021
Martínez L, Merino P, Santoro G, Martínez JI, Katsanoulis S, Ault J, Mayoral Á, Vázquez L, Accolla M, Dazzi A, Mathurin J, Borondics F, Blázquez-Blázquez E, Shauloff N, Lebrón-Aguilar R, Quintanilla-López JE, Jelinek R, Cernicharo J, Stone HA, de la Peña O'Shea VA, de Andres PL, Haller G, Ellis GJ, Martín-Gago JA.   +23 more
europepmc   +1 more source

Modelling supermassive black hole growth: towards an improved sub-grid prescription

, 2012
Accretion onto supermassive black holes (SMBHs) in galaxy formation simulations is frequently modelled by the Bondi-Hoyle formalism. Here we examine the validity of this approach analytically and numerically. We argue that the character of the flow where
Alexander Hobbs, Andrew R. King, Binney, Birnboim, Bondi, Bondi, Booth, Bower, Bullock, Cattaneo, Chris Power, Churazov, Croton, de Vaucouleurs, DeBuhr, Dehnen, Dekel, Di Matteo, Dubois, Fardal, Frank, Guo, Hernquist, Hirschmann, Hobbs, Hopkins, Hoyle, Häring, Jaffe, Johansson, Katz, Kereš, Kereš, Kim, Komatsu, Krumholz, Krumholz, Levine, Mayer, Mortlock, Navarro, Nayakshin, Nayakshin, Nulsen, Pelupessy, Power, Rees, Ricotti, Ruffert, Sergei Nayakshin, Sijacki, Silk, Springel, Springel, Suto, White, White   +56 more
core   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source