Results 91 to 100 of about 2,650,105 (305)

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Current Status and Challenges of Log Evaluation Technology for Coal-Rock Gas

Cejing jishu
To provide technical support for the exploration and development of coal-rock gas resources, and facilitate the achievement of the "carbon peaking and carbon neutrality" goals, this study systematically compares the reservoir characteristics of coal-rock
LIU Die, ZHOU Jinyu, SONG Lianteng, LIU Zhonghua, TIAN Lili, WU Mingsong, LI Ye, DANG Wenle   +7 more
doaj   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +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

Sustaining star formation rates in spiral galaxies - Supernova-driven turbulent accretion disk models applied to THINGS galaxies

, 2010
Gas disks of spiral galaxies can be described as clumpy accretion disks without a coupling of viscosity to the actual thermal state of the gas. The model description of a turbulent disk consisting of emerging and spreading clumps (Vollmer & Beckert 2003)
Adam K. Leroy, Ballesteros-Paredes, Bernd Vollmer, Bigiel, Bush, Cox, Dalcanton, de Blok, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Evans, Frisch, Gil de Paz, Gomez, Haan, Helfer, Heyer, Joung, Kim, Kobulnicky, Koyama, Krumholz, Krumholz, Krumholz, Leroy, Leroy, Marinacci, McClure-Griffiths, Moustakas, Pilyugin, Robertson, Scalo, Shetty, Tamburro, Tamburro, Thornton, Trachternach, Vink, Wada, Wada, Walter, Wolf-Chase, Wong   +44 more
core   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Thermodynamic relations in a driven lattice gas: numerical exprements

, 2003
We explore thermodynamic relations in non-equilibrium steady states with numerical experiments on a driven lattice gas. After operationally defining the pressure and chemical potential in the driven lattice gas, we confirm numerically the validity of the
B. Derrida, F.J. Alexander, J.L. Lebowitz, J.R. Dorfman, Kumiko Hayashi, M.Q. Zhang, P. Garrido, S. Katz, Shin-ichi Sasa, T. Hatano, Y. Oono   +10 more
core   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

Management of acute diverticulitis with pericolic free gas (ADIFAS): an international multicenter observational study. [PDF]

Int J Surg, 2023
Tejedor P, Pastor C, Pellino G, Di Saverio S, Gorter-Stam M, Sylla P, Francis N, Collaborative Study Group.   +7 more
europepmc   +1 more source