Results 91 to 100 of about 13,013,114 (294)

Blow-up rates for the general curve shortening flow

open access: yes, 2009
The blow-up rates of derivatives of the curvature function will be presented when the closed curves contract to a point in finite time under the general curve shortening flow. In particular, this generalizes a theorem of M.E. Gage and R.S. Hamilton about mean curvature flow in $\mathbb{R}^{2}$.
Huang, Rongli, Chen, Juanjuan
openaire   +2 more sources

Blow-up for Discrete Reaction-Diffusion Equations on Networks

open access: yes, 2015
In this paper, we discuss the conditions under which blow-up occurs for the solutions of reaction-diffusion equations on networks. The analysis of this class of problems includes the existence of blow-up in finite time and the determination of the blow ...
Jae-Hwang Lee   +2 more
core   +1 more source

Multimodal Imaging of Hypoxia, Metabolism and pH in Feline Sarcoma Using Hyperpolarized 13C MRI and PET

open access: yesAdvanced Science, EarlyView.
This work presents a clinically deployable simultaneous PET/MRI workflow which integrates hyperpolarized 13C imaging of metabolism and extracellular pH with [18F]FMISO PET to characterize hypoxia, acidosis, and metabolic reprogramming in feline sarcoma.
Martin Grashei   +17 more
wiley   +1 more source

On the blow-up rate for fast blow-up solutions arising in an anisotropic crystalline motion

open access: yes, 2020
We consider the asymptotic behavior of motion of polygonal convex curves by crystalline curvature in the plane. There appear spontaneously two types of singularity: one is single point extinction and the other is degenerate pinching.
Shigetoshi Yazaki, Tetsuya Ishiwata
core  

The Blow-up Rate of Solutions to Boundary Blow-up Problems for the Complex Monge-Ampère Operator [PDF]

open access: yes, 2018
A regularity result for solutions to boundary blow-up problems for the complex Monge-Ampère operator in balls in $$\mathbb{C}^n$$ is proved. For certain boundary blow-up problems on bounded, strongly pseudoconvex domains in $${\mathbb C}^n$$ with smooth ...
Ivarsson, Björn, Matero, Jerk
core  

High‐Brightness and Ultra‐Long‐Lifetime Spin Quantum Dot Light‐Emitting Diodes Enabled by Efficient Injection of Spin‐Polarized Holes Through a Hybrid Hole Transport Layer

open access: yesAdvanced Science, EarlyView.
This work employs a hybrid hole transport layer to enhance hole transport efficiency, resulting in improved performance for the final device. It achieves an external quantum efficiency of 6.68%, a circularly polarized electroluminescence asymmetry factor of 0.026, and a high luminance of 14,370 cd/cm2, representing the highest luminance reported to ...
Fengqi Qiu   +8 more
wiley   +1 more source

Numerical approximations for blow-up problems [PDF]

open access: yes, 2003
Estudiamos el comportamiento asintótico de aproximaciones numéricas para problemas con blow-up. Probamos que al aproximar este tipo de problemas muchas veces los métodos usuales reproducen el comportamiento asintótico de la solución continua, sin embargo
Groisman, Pablo, Groisman, Pablo José
core  

Simulation of the stretch blow moulding process: from the modelling of the microstructure evolution to the end-use elastic properties of polyethylene terephthalate bottles [PDF]

open access: yes, 2010
The original publication is available at www.springerlink.comThe whole stretch blow-moulding process of PET bottles is simulated at the usual process temperature in order to predict the elastic end-use properties of the bottles.
REGNIER, Gilles   +7 more
core   +1 more source

Shear‐Mode Direct Piezoelectric Response of Ferroelectric Nematic Liquid Crystals

open access: yesAdvanced Science, EarlyView.
Periodic shear‐induced electric current measurements are reported on two archetypic ferroelectric nematic liquid crystal compounds. From the temperature, frequency and shear angle dependent results of the first and second harmonic current signals together with temperature and oscillatory rheology measurements, the effective piezoelectric coupling ...
Péter Salamon   +4 more
wiley   +1 more source

Multiferroic Quantum Criticality in a Proper Ferroelectric Quasi‐one‐dimensional Ising Antiferromagnet

open access: yesAdvanced Science, EarlyView.
Sr1−xBaxCo2V2O8 is established as a magnetic‐ion‐based proper displacive ferroelectric whose transition is continuously suppressed by Ba substitution to a ferroelectric quantum critical point. In the resulting quantum paraelectric regime, a transverse magnetic field induces magnetic quantum criticality, realizing multiferroic quantum criticality and ...
Takayuki Nagai   +3 more
wiley   +1 more source

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