Results 51 to 60 of about 90,850 (290)

Coherent precipitation strengthening by/in LI₂-ordered phases

Journal de Physique III, 1991
Microstructural characteristics of (i) the alloys strengthened by precipitation of a coherent LI2-ordered phase and (ii) the LI2-ordered alloys strengthened by the precipitation of coherent disordered phase are reviewed with particular emphasis on the effects of volume fraction and morphology of second phase.
Nemoto, M., Tian, W., Sano, T.
openaire   +2 more sources

Kinetics of coherent order-disorder transition in $Al_3 Zr$ [PDF]

, 2001
Within a phase field approach which takes the strain-induced elasticity into account, the kinetics of the coherent order-disorder transition is investigated for the specific case of $Al_3 Zr$ alloy.
A.B. Kamara, A.E. Carlsson, A.G. Khachaturyan, Alphonse Finel, C. Amador, C. Wagner, D. Lazarus, E. Nes, E. Nes, I.M. Lifshitz, Jian-hua Xu, Jian-hua Xu, L.Q. Chen, Laurent Proville, M. Alatalo, M.S. Zedalis, N. Ryum, Y.U. Wang   +17 more
core   +2 more sources

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source

Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance model

Comptes Rendus. Géoscience, 2022
This study assessed the climate conditions that caused the tropical Zongo Glacier (16° S, Bolivia) to reach its Little Ice Age (LIA) maximum extent in the late 17th century.
Autin, Philémon, Sicart, Jean Emmanuel, Rabatel, Antoine, Hock, Regine, Jomelli, Vincent   +4 more
doaj   +1 more source

Precipitated K-promoted Co-Mn-Al mixed oxides for direct NO decomposition: Preparation and properties [PDF]

, 2019
Direct decomposition of nitric oxide (NO) proceeds over Co-Mn-Al mixed oxides promoted by potassium. In this study, answers to the following questions have been searched: Do the properties of the K-promoted Co-Mn-Al catalysts prepared by different ...
Balabánová, Jana, Bílková, Tereza, Jandová, Věra, Jirátová, Květa, Karásková, Kateřina, Klegová, Anna, Kotarba, Andrzej, Koštejn, Martin, Martaus, Alexandr, Obalová, Lucie, Pacultová, Kateřina   +10 more
core   +2 more sources

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Strain localisation and failure at twin-boundary complexions in nickel-based superalloys

Nature Communications, 2020
Coherent twin boundaries in nickel-based superalloys are vulnerable sites for alloy failure in demanding environments. Here, the authors show that the abnormal γ″ precipitation mechanism at twin boundaries is responsible for pronounced strain ...
Zhenbo Zhang, Zhibiao Yang, Song Lu, Allan Harte, Roberto Morana, Michael Preuss   +5 more
doaj   +1 more source

Thermodynamic model for lattice point defect-mediated semi-coherent precipitation in alloys

Communications Materials, 2021
Precipitation of secondary phases in a crystalline matrix often leads to the loss of coherency at the phase boundary. Here, a thermodynamic model for precipitation is presented that takes into account the role of lattice point defects on the ...
Maylise Nastar, Lisa T. Belkacemi, Estelle Meslin, Marie Loyer-Prost   +3 more
doaj   +1 more source

Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy

Advanced Engineering Materials, EarlyView.
An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley   +1 more source

Radiosounding-derived convective parameters for the Alcântara Launch Center [PDF]

Journal of Aerospace Technology and Management, 2009
Climatological features of convective parameters (K index, IK; 950 hPa K index, IK950; Showalter index, IS; lifted index, ILEV; total totals index, ITT; and convective available potential energy, CAPE) derived from 12 UTC radiosounding data collected at ...
Fernando Pereira de Oliveira, Marcos Daisuke Oyama   +1 more
doaj