Results 41 to 50 of about 179,749 (304)

Width of the Zero-Field Superconducting Resistive Transition in the Vicinity of the Localization Threshold

, 2001
Resistive superconducting zero-field transition in amorphous In-O films in states from the vicinity of the insulator-superconductor transition is analyzed in terms of two characteristic temperatures: the upper one, $T_{c0}$, where the finite amplitude of
A. Ghosal, A. I. Larkin, A. T. Fiory, B. I. Galperin, G. Kotliar, L. G. Aslamazov, L. N. Bulaevskii, M. P. A. Fisher, M. V. Golubkov, P. Minnhagen, S. R. Khan, V. F. Gantmakher, V. F. Gantmakher, V. F. Gantmakher, V. F. Gantmakher, V. F. Gantmakher, V. J. Emery, V. L. Berezinskii   +17 more
core   +1 more source

Pore size distribution and supercritical hydrogen adsorption in activated carbon fibers [PDF]

, 2009
Pore size distributions (PSD) and supercritical H_2 isotherms have been measured for two activated carbon fiber (ACF) samples. The surface area and the PSD both depend on the degree of activation to which the ACF has been exposed.
Ahn, C. C., Fultz, B., Kabbour, H., Purewal, J. J., Vajo, J. J.   +4 more
core   +2 more sources

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

A Thermodynamic 3D Model for the Simulation of Diffusion‐Controlled Alloying Processes in Heterogeneous Material Structures

Advanced Engineering Materials, EarlyView.
A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer, Leonhard Holländer, André Langohr, Hans Jürgen Maier   +3 more
wiley   +1 more source

Local mean-field study of capillary condensation in silica aerogels

, 2003
We apply local mean-field (i.e. density functional) theory to a lattice model of a fluid in contact with a dilute, disordered gel network. The gel structure is described by a diffusion-limited cluster aggregation model.
A. Berger, A. Hasmy, A. I. Golov, A. Papadopoulou, A.E. Bailey, A.P.Y. Wong, A.P.Y. Wong, B. Koiller, B. Tadic, C. Ro, C. Vasquez, C.M. Soukoulis, D.J. Tulimieri, E. Kierlik, E. Kierlik, E. Kierlik, E. Kierlik, E. Pitard, E.P. Raposo, E.S. Kikkinides, F. Brochard, F. Detcheverry, F.J. Perez-Reche, G. Gabay, G. Lawes, G. Tarjus, G.S. Grest, H. Ji, H. Yoshizawa, H.-J. Woo, H.-J. Woo, J. Marcos, J. R. Beamish, J. Yoon, J.H. Page, J.P. Sethna, J.V. Porto, K. Dahmen, K. Uzelac, L.B. Lurio, M. Cieplak, M. Kolb, M. L. Rosinberg, M. Lach-hab, M.H.W. Chan, M.L. Rosinberg, M.P. Lilly, M.P. Lilly, O. Perkovic, O. Perkovic, P. Meakin, P.C. Ball, P.G. de Gennes, R. Salazar, U. Marini Bettolo Marconi, V. Krakoviack   +55 more
core   +1 more source

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

Aplicación de modelos para la generación de la isoterma de adsorción de metano en una muestra de shale y su impacto en el cálculo de reservas

Revista Fuentes El Reventón Energético, 2015
Several adsorption isotherm models were analyzed for the purpose of fi tting the experimental data published by Gasparik et al. (2012) obtained in a methane adsorption experiment on a shale sample from the Posidonea formation in the netherlands.
Cristian Alexis Murillo Martínez, Olga Patricia Ortiz Cancino, Ovidio Andrez Gomez Rodriguez, Samuel Fernando Muñoz Navarro   +3 more
doaj   +1 more source

Determination of the thermodynamic temperature between 236 K and 430 K from speed of sound measurements in helium [PDF]

, 2019
We report speed of sound measurements in helium at 273.16 K and at eight temperatures in the range between 236 K and 430 K. These results determine the difference (T  −  T 90) between the thermodynamic temperature T and its approximation T 90 by the ...
Dematteis, R., Gavioso, R., Imbraguglio, D., Madonna Ripa, D., Steur, P.   +4 more
core   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Genetic Algorithm Based Nonlinear Optimization of Adsorption Processes

Journal of the Turkish Chemical Society Section B: Chemical Engineering, 2021
In this study, for different adsorption processes, nonlinear isotherm, kinetic model and thermodynamic parameters were calculated using genetic algorithm-based optimization method. Nonlinear equations were directly used as the model parameters can change
Dilek ÖZMEN, Gülşen FİKİR
doaj