Results 41 to 50 of about 206,569 (278)

Intermittent dislocation flow in viscoplastic deformation

, 2001
The viscoplastic deformation (creep) of crystalline materials under constant stress involves the motion of a large number of interacting dislocations. Analytical methods and sophisticated `dislocation-dynamics' simulations have proved very effective in ...
Alessandro Vespignani, D Rouby, G Ananthakrishina, H Neuhäuser, HJ Jensen, I Groma, J Gil Sevillano, J Lepinoux, J Weiss, J Weiss, Jean-Robert Grasso, JP Hirth, Jérôme Weiss, M Kardar, M Zaiser, M.-Carmen Miguel, P Duval, P Hähner, P Hähner, R Becker, R Fournet, R Thomson, RJ Amodeo, Stefano Zapperi, VZ Bengus   +24 more
core   +3 more sources

Inertial and retardation effects for dislocation interactions [PDF]

, 2009
A new formulation for the equation of motion of interacting dislocations is derived. From this solution it is shown that additional coupling forces, of kinetic and inertial origin, should be considered in Dislocation Dynamics (DD) simulations at high ...
C. Denoual, Hirth JP, L. Pillon, Pillon L, Rodney D   +4 more
core   +6 more sources

Aggressive prostate cancer is associated with pericyte dysfunction

Molecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero, Ane Martinez‐Larrinaga, Joaquim Grego‐Bessa, Saioa Garcia‐Longarte, Hielke van Splunder, Ianire Astobiza, Amaia Ercilla, Laura Bozal‐Basterra, Isabel Mendizabal, Pilar Villacampa, Arkaitz Carracedo, Mariona Graupera   +11 more
wiley   +1 more source

A bcc refractory high-entropy alloy: the ideal case of smooth plastic flow

Materials Research Letters
Single crystalline metals exhibit correlated dislocation dynamics, irrespective of lattice system. This collective evolution of dislocation structures is intermittent and scale-free, implying divergent length scales that play a critical role in failure ...
Yen-Ting Chang, Abhi Sharda, Julian M. Rosalie, Robert Maaß, Marie A. Charpagne   +4 more
doaj   +1 more source

An investigation on the precipitates in T5 treated high vacuum die-casting AE44–2 magnesium alloy

Materials Research Express, 2022
The AE44-2 magnesium alloy was fabricated via die-casting under high vacuum (denoted as HVDC-AE44-2 alloy). The microstructures and mechanical properties of the aged HVDC-AE44-2 alloys were investigated.
Yongfeng Li, Jinhui Wang, Hongbin Ma, Zisheng Zhen, Yanzhuo Liu, Honggang Zhang, Peipeng Jin   +6 more
doaj   +1 more source

Growth and dislocation studies of β-HMX [PDF]

, 2014
Background: The defect structure of organic materials is important as it plays a major role in their crystal growth properties. It also can play a subcritical role in “hot-spot” detonation processes of energetics and one such energetic is ...
AEDM Van der Heijden, BL Korsunsky, CS Choi, CS Coffey, CS Coffey, CS Coffey, E Dowty, EA Zhurova, HG Gallagher, HG Gallagher, HG Gallagher, HH Cady, HL Bhat, Hugh G Gallagher, ID Begg, JA Kohlbeck, JDH Donnay, JJ Gilman, JKA Amuzu, John N Sherwood, JR Deschamps, LA Monaco, MA Vasilchenko, ME Sitzmann, P Main, PJ Halfpenny, PJ Halfpenny, PJ Halfpenny, PJ Halfpenny, PJ Halfpenny, PJ Halfpenny, Ranko M Vrcelj, RE Cobbledick, RM Hooper, RW Armstrong, S Amelinckx, S Finnie, SJP Palmer, TL Li, TL Li, WC McCrone   +40 more
core   +1 more source

Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

Molecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice, Jose I. Lopez, Aitziber Ugalde‐Olano, Maite Zufiaurre, Ianire Astobiza, Natalia Martin‐Martin, Laura Bozal‐Basterra, Saioa Garcia‐Longarte, Amaia Zabala‐Letona, Sofia Rey, Aida Santos‐Martin, Miguel Unda, Ana Loizaga‐Iriarte, Mariona Graupera, Paolo Nuciforo, Arkaitz Carracedo, Isabel Mendizabal   +16 more
wiley   +1 more source

Observation of the Impact of Dislocations on Atomic Polarization and Domain Structures in BaTiO3

Advanced Physics Research
Line defects, dislocations, in ferroelectric materials can facilitate the nucleation of new domains and pin the motion of domain walls, leading to significant electromechanical responses.
Shan Xiang, Yan Zhang, Miao Song, Edoardo Zatterin, Hanyu Gong, Fangping Zhuo, Kechao Zhou, Dou Zhang   +7 more
doaj   +1 more source

Molecular Dynamics Simulation of the Interaction between Dislocations and Iron–Vanadium Precipitates in Alpha Iron: Effect of Chemical Composition

Crystals, 2023
In this study, molecular dynamics simulations were employed to study the interaction between dislocations with Fe-V precipitate with different vanadium concentrations.
Sepehr Yazdani, Mohsen Mesbah, Veronique Vitry   +2 more
doaj   +1 more source

Carpal dislocations

Journal of Hand Surgery (European Volume), 2023
Carpal dislocations result from sequential disruption of the complex relationship between the bones and ligaments of the wrist. Injuries to the carpus occur via predictable mechanisms, an understanding of which is critical to identify and treat these frequently missed patterns of injury and to avoid the sequela of chronic instability.
Nathan, Heineman, Dang-Huy, Do, Ann, Golden   +2 more
openaire   +2 more sources