Results 91 to 100 of about 2,766 (314)

Null controllability of semilinear degenerate parabolic equations in bounded domains

Electronic Journal of Differential Equations, 2006
In this paper we study controllability properties for semilinear degenerate parabolic equations with nonlinearities involving the first derivative in a bounded domain of R. Due to degeneracy, classical null controllability results do not hold in general.
Piermarco Cannarsa, Genni Fragnelli
doaj  

The Wolff gradient bound for degenerate parabolic equations

Journal of the European Mathematical Society, 2014
The spatial gradient of solutions to non-homogeneous and degenerate parabolic equations of p -Laplacean type can be pointwise estimated by natural Wolff potentials of the right hand side measure.
Mingione, Giuseppe, Kuusi, Tuomo
openaire   +6 more sources

Hybrid Solar Spectral‐Splitting Photovoltaic‐Thermal Hydrogen Production Systems

Advanced Science, EarlyView.
A hybrid solar photovoltaic‐thermal hydrogen system with membrane‐less electrolysis significantly boosts solar‐to‐hydrogen efficiency by co‐using thermal and electrical energy. The system attains good performance under variable irradiance with direct current power converters.
Yu Tian, Pooria Hadikhani, Nada Alati, Bryce S. Richards, Gan Huang   +4 more
wiley   +1 more source

Blow-up sets and asymptotic behavior of interfaces for quasilinear degenerate parabolic equations in RN [PDF]

, 1992
Kiyoshi Mochizuki, Ryuichi Suzuki
openalex   +1 more source

Designing Spin Symmetry for Altermagnetism with Strong Magnetoelectric Coupling

Advanced Science, EarlyView.
Antiferromagnets can be induced into altermagnets by changing the real‐space symmetry, increasing their potential for use in spintronic devices. Here, a novel and general approach is proposed: transforming antiferromagnets into altermagnets by modulating spin‐space symmetry, rather than real‐space symmetry.
Wei Sun, Wenxuan Wang, Changhong Yang, Shifeng Huang, Ning Ding, Shuai Dong, Zhenxiang Cheng   +6 more
wiley   +1 more source

Probing Anisotropic Quasiparticle Dynamics and Topological Phase Transitions in Quasi‐1D Topological Insulator ZrTe5

Advanced Science, EarlyView.
This study reveals quasiparticle dynamics in ZrTe5. Polarization‐dependent measurements show transient reflectivity anisotropy arises from electron relaxation and lattice vibrations. The first dynamical evidence of a temperature‐induced Lifshitz transition is reported.
Yueying Hou, Linze Li, Sutao Sun, Gan Liu, Hongyuan Zhao, Zhiheng Chen, Xuejun Yan, Yang‐Yang Lv, Yurong Yang, Shu‐Hua Yao, Jian Zhou, Y.B. Chen, Ming‐Hui Lu, Vitalyi Gusev, Yan‐Feng Chen   +14 more
wiley   +1 more source

The initial-boundary value problem for a nonlinear degenerate parabolic equation [PDF]

, 1991
Isamu Fukuda, Masayoshi Tsutsumi
openalex   +1 more source

A Generative AI‐Assisted Piezo‐MEMS Ultrasound Device for Plant Dehydration Monitoring

Advanced Science, EarlyView.
This study introduces a complementary metal–oxide–semiconductor (CMOS)‐compatible wearable piezoelectric micromachined ultrasound transducers (PMUTs) that sandwiches the leaf (PMUT–Leaf–PMUT, PLP) and employs generative artificial intelligence for real‐time analysis.
Kaustav Roy, Darren Sim, Luwei Wang, Zixuan Zhang, Xinge Guo, Yao Zhu, Sanjay Swarup, Chengkuo Lee   +7 more
wiley   +1 more source

Overcome Limited Efficiency in All‐Perovskite Tandem Solar Cells Upon Light Management at Top Perovskite‐ Transparent Electrode Interfaces

Advanced Electronic Materials, EarlyView.
To further boost the PCE (power conversion efficiency) in all‐perovskite tandem solar cells (APTSCs), optimizing their optical structures is essential. In this study, it is found that the efficiency limitation in APTSCs is primarily due to reflective optical losses at the top perovskite interface.
Jinfeng Li, Jinpeng Yang, Xianjie Liu
wiley   +1 more source

Existence and uniqueness for a degenerate parabolic equation with 𝐿¹-data [PDF]

, 1999
F. Andreu, José M. Mazón, S. de León, J. Toledo   +3 more
openalex   +1 more source