Results 71 to 80 of about 284,044 (247)

Duplex Stainless Steel Laser‐Surface Textured: Stability in Brine Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Controlled laser‐surface treatment (LST) of duplex DSS2205 steel is performed to increase its stability in brine solution under cyclic electrochemical assays. The superior protection with respect to flat and smooth panels is attributed to the presence of FeCr2O4 as the main protective oxide layer in the LST surface, after corrosion tests. The stability
Mohammad Rezayat   +5 more
wiley   +1 more source

Évolution de la répartition spatiale des groupes ethniques dans l’espace résidentiel montréalais, 1931-1971 [PDF]

open access: yes, 1985
Dans cet article l'évolution de la structure de l'espace ethnique montréalais, durant la période 1931-1971, est analysée à l'aide de l'analyse factorielle à trois entrées.
Langlois, André
core   +1 more source

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert   +7 more
wiley   +1 more source

Dynamic models of residential ségrégation: an analytical solution [PDF]

open access: yes
We propose an analytical resolution of Schelling segregation model for a general class of utility functions. Using evolutionary game theory, we provide conditions under which a potential function, which characterizes the global configuration of the city ...
Florence Goffette-Nagot   +2 more
core  

Sol–Gel Derived Polymer Precursors for Stereolithography of ZrC

open access: yesAdvanced Engineering Materials, EarlyView.
ZrC is a critical material target for extreme temperature conditions. This report describes a protocol for preparing ZrC ceramics via stereolithography and examines the impact of the polymer matrix on carbothermal reduction and mechanical stability of 3D printed ZrC.
Charles J. Rafalko   +2 more
wiley   +1 more source

L'Amérique, entre rêve et dignité. Essai sur la réécriture d'une mémoire urbaine en Afrique du Sud [PDF]

open access: yes, 2001
South African cities are seen as extreme models of segregation and fragmentation. Nevertheless, they offer striking parallels with American cities, in terms of landscapes or urban planning: planning practices and concepts were even imported to South ...
Guillaume, Philippe   +1 more
core   +1 more source

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

open access: yesAdvanced 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   +3 more
wiley   +1 more source

Low levels of ethnic intolerance do not create large ghettos [PDF]

open access: yes
Dans les années 1970, Thomas C. Schelling a proposé un modèle pour expliquer le lien entre ségrégation spatiale et préférences individuelles concernant cette ségrégation.
Forse, Michel, Parodi, Maxime
core  

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi   +7 more
wiley   +1 more source

Ségrégation scolaire et différenciation curriculaire au Québec

open access: yesCanadian Journal for New Scholars in Education, 2015
Résumé : Cet article présente des résultats préliminaires d’une étude visant à mettre en lumière le contexte de différenciation curriculaire au Québec sous l’angle de la ségrégation scolaire.
Alain Guillaume Marcotte-Fournier
doaj  

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