Results 51 to 60 of about 81,786 (299)
Contracting return maps for monotone delayed feedback
Discrete & Continuous Dynamical Systems - A, 2001 The existence and stability of slowly oscillating periodic solutions to the delay differential equation \[ \dot x(t)=-\mu x(t)+f(x(t-1)) \] is derived for nonlinearities \(f\) which satisfy the standard negative feedback condition, \(xf(x)0\), \(f(x)=\text{sign\,} (x)=+1\) for ...
openaire +2 more sources
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
From Exile to Homeland Return: Ethnographic Mapping to Inform Peacebuilding from Afar
Stability : International Journal of Security and Development, 2020 When violent conflict flares up, forced migration often follows. Ethnographic data shows that forced migrants remain attached to their places of origin and often express a desire to return once conflict has abated, be it after weeks, months, or years ...
Nicolas Parent
doaj +1 more source
Velocity-based formulations for standard and quasi-incompressible hypoelastic-plastic solids [PDF]
, 2016 This is the accepted version of the following article: [Franci, A., Oñate, E., and Carbonell, J. M. (2016) Velocity-based formulations for standard and quasi-incompressible hypoelastic-plastic solids. Int. J. Numer. Meth. Engng, 107: 970–990.
Bathe +34 more
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Return-map for semiconductor lasers with optical feedback [PDF]
1999 IEEE LEOS Annual Meeting Conference Proceedings. LEOS'99. 12th Annual Meeting. IEEE Lasers and Electro-Optics Society 1999 Annual Meeting (Cat. No.99CH37009), 2003 It is well known that a semiconductor laser exposed to moderate optical feedback and biased near threshold exhibits the phenomenon of low-frequency intensity fluctuations (LFF). While this behavior can be numerically simulated using the so-called Lang-Kobayshi model, the interpretation of the phenomenon has remained a controversy.
J. Mork +3 more
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Tau acetylation at K331 has limited impact on tau pathology in vivo
FEBS Letters, EarlyView.We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto +3 more
wiley +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Cyclic plasticity model for fatigue with softening behaviour below macroscopic yielding
Materials & Design, 2019 Experimental observations have evidenced the insufficiency of yield surface definition via monotonic loading to guarantee adequate description of material behaviour under fatigue tests.
S. Tsutsumi, R. Fincato
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ALE-based ductile damage and fracture [PDF]
, 2009 Mixed methods have been used with success in finite strain elasto-plastic with damage for decades. The subsequent stage is now dealt with enrichment methods, either local such as SDA or global such as XFEM.
Areias, P.
core
Thermo-micro-mechanical simulation of bulk metal forming processes
, 2019 The newly proposed microstructural constitutive model for polycrystal viscoplasticity in cold and warm regimes (Motaman and Prahl, 2019), is implemented as a microstructural solver via user-defined material subroutine in a finite element (FE) software ...
Haase, Christian +3 more
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