Results 101 to 110 of about 2,650,105 (305)

Power-law distributions for the free path length in Lorentz gases

, 2013
It is well known that, in the Boltzmann-Grad limit, the distribution of the free path length in the Lorentz gas with disordered scatterer configuration has an exponential density.
Marklof, Jens, Strömbergsson, Andreas
core   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Combustion of Pneumoperitoneum: A Rare Complication Secondary to Spontaneous Combustion of Free Gas in the Peritoneal Cavity. [PDF]

Cureus, 2022
Seynulabdeen V.
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

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

Imperfect Bose Gas with Attractive Boundary Conditions

, 2005
The free Bose gas with attractive boundary conditions is an interesting toy model for the study of Bose-Einstein Condensation (BEC), because one has BEC already in one dimension. Here we study for the first time the imperfect Bose gas with these boundary
A. Verbeure, Fannes, Fannes, Fannes, L. Vandevenne, Landau, Lewis, Robinson, Vandevenne, Zagrebnov   +9 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

Prediction of produced GOR of miscible gas flooding in low permeability reservoirs

Youqicang pingjia yu kaifa, 2019
The produced GOR is a key index for the development and design of gas flooding reservoirs. On the basis of confirming that there are five sources of gas production in the whole life cycle of gas flooding, the prediction formula of produced GOR in low ...
Wang Gaofeng, Yao Jie, Wang Hao, Yu Guangming, Luo Wenli   +4 more
doaj  

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