Results 111 to 120 of about 2,650,105 (305)

H-alpha and Free-Free Emission from the WIM

, 2010
Recent observations have found the ratio of H-alpha to free-free radio continuum to be surprisingly high in the diffuse ionized ISM (the so-called WIM), corresponding to an electron temperature of only ~3000K. Such low temperatures were unexpected in gas
Abrahamsson, B. T. Draine, Barinovs, Collins, Dobler, Dobler, Draine, Greenawalt, Griffin, Haffner, Hill, Hoopes, Indriolo, Jenkins, Lepp, Madsen, Mathis, McKee, Miller, Nussbaumer, Otte, Pequignot, Pequignot, Rand, Rand, Reynolds, Reynolds, Reynolds, Rossa, Ruobing Dong, Sembach, Sofia, Tayal, Tayal, Tayal, Verner, Verner, Wang, Weingartner, Weingartner, Wood   +40 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

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

Free Energy of a Dilute Bose Gas: Lower Bound

, 2006
A lower bound is derived on the free energy (per unit volume) of a homogeneous Bose gas at density $\rho$ and temperature $T$. In the dilute regime, i.e., when $a^3\rho \ll 1$, where $a$ denotes the scattering length of the pair-interaction potential ...
C. Hainzl, D. Ruelle, D.W. Robinson, E.H. Lieb, E.H. Lieb, E.H. Lieb, E.H. Lieb, E.H. Lieb, F.J. Dyson, K. Huang, M. Ohya, R. Seiringer, R. Seiringer, Robert Seiringer   +13 more
core   +2 more sources

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Solving 1d plasmas and 2d boundary problems using Jack polynomials and functional relations

, 1994
The general one-dimensional ``log-sine'' gas is defined by restricting the positive and negative charges of a two-dimensional Coulomb gas to live on a circle.
A. Schmid, Al. B. Zamolodchikov, Al. B. Zamolodchikov, B. Sutherland, C. Callan, C. Itzykson, C. L. Kane, C. N. Yang, E. Wong, F. Calogero, F. D. M. Haldane, F. Guinea, F. Guinea, F. Lesage, F. Lesage, H. Saleur, H. Schultz, I. Affleck, I. G. Macdonald, I. G. Macdonald, J. L. Cardy, K. H. Kjaer, K. Moon, K. W. J. Kadell, M. Gaudin, M. L. Mehta, M. P. A. Fisher, N. Andrei, P. Fendley, P. Fendley, P. J. Forrester, P. J. Forrester, P. J. Forrester, P. W. Anderson, R. P. Stanley, S. Ghoshal, T. Klassen, Z. N. C. Ha   +37 more
core   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

CAS22 - FORTRAN program for fast design and analysis of shock-free airfoil cascades using fictitious-gas concept [PDF]

A user-oriented computer program, CAS22, was developed that is applicable to aerodynamic analysis and transonic shock-free redesign of existing two-dimensional cascades of airfoils.
Dulikravich, D. S., Sobieczky, H.
core   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Nonequilibrium Electron Interactions in Metal Films

, 2007
Ultrafast relaxation dynamics of an athermal electron distribution is investigated in silver films using a femtosecond pump-probe technique with 18 fs pulses in off-resonant conditions. The results yield evidence for an increase with time of the electron-
C. Flytzanis, C. K. Sun, F. Vallée, G. Tas, J. B. Smith, N. Del Fatti, P. B. Allen, P. B. Johnson, R. Bouffanais, R. H. M. Groeneveld, R. N. Gurzhi, R. Rosei, R. Rosei, S. I. Anisimov, W. S. Fann   +14 more
core   +1 more source