Results 41 to 50 of about 177,496 (281)

Inverse gas chromatography of chromia. Part II. Finite surface coverage [PDF]

Journal of the Serbian Chemical Society, 2002
The interactions of n-hexane, benzene, chloroform, and tetrahydrofuran with dried (amorphous) chromia (I) and chromia heated at 1073 K (crystalline) (II), both obtained from a colloidal dispersion, and a commercially available chromia (III) were studied ...
LJ. V. RAJAKOVIC, S. K. MILONJIC, A. E. ONJIA   +2 more
doaj  

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

Role of Sorption Isotherms in the Analysis of Coupled Heat and Mass Fluxes in Porous Media [PDF]

, 2005
The aim of this work is to show the importance of the sorption isotherms in the study of the heat and mass fluxes in unsaturated porous media. General forms of the heat and mass fluxes are presented in terms of experimentally accessible quantities.
Reis, A. Heitor, Rosa, Rui
core   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Ferromagnetic Properties of ZrZn$_2$

, 2005
The low Curie temperature (T_C approx 28K) and small ordered moment (M_0 approx 0.17 mu_B f.u.^-1) of ZrZn2 make it one of the few examples of a weak itinerant ferromagnet. We report results of susceptibility, magnetization, resistivity and specific heat
A. A. Abrikosov, A. Carrington, A. Griffiths, A. J. Leggett, A. P. J. van Deursen, C. Pfleiderer, E. A. Yelland, E. P. Wohlfarth, F. M. Grosche, J. M. Yeomans, J. M. Ziman, K. Makoshi, M. J. Steiner, M. Uhlarz, O. Taylor, P. M. Chaikin, R. P. Elliott, S. J. C. Yates, S. M. Hayden, S. Ogawa, S. Ogawa, T. B. Massalski, T. Moriya   +22 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

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

Molecular recognition on acoustic wave devices [PDF]

, 1992
Microporous thin films composed either of zeolite crystals embedded in sol-gel derived glass or of a molecular coupling layer, zeolite crystals and a porous silica overlayer, were formed on the gold electrodes of Quartz Crystal Microbalances (QCM). The
Bein, Thomas, Brinker, Jeffrey, Brown, Kelly D., Forrister, Ray, Yan, Yongan   +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