Results 81 to 90 of about 299,137 (271)

Singular graphene metasurfaces

EPJ Applied Metamaterials, 2019
The spatial tunability of the electron density in graphene enables the dynamic engineering of metasurfaces in the form of conductivity gratings, which can bridge the momentum gap between incident radiation and surface plasmons.
Galiffi Emanuele, Pendry John, Huidobro Paloma Arroyo   +2 more
doaj   +1 more source

Measure Data Problems for a Class of Elliptic Equations with Mixed Absorption-Reaction

Advanced Nonlinear Studies, 2021
In the present paper, we study the existence of nonnegative solutions to the Dirichlet problem ℒp,qM⁢u:=-Δ⁢u+up-M⁢|∇⁡u|q=μ{{\mathcal{L}}^{{M}}_{p,q}u:=-\Delta u+u^{p}-M|\nabla u|^{q}=\mu} in a domain Ω⊂ℝN{\Omega\subset\mathbb{R}^{N}} where μ is a ...
Bidaut-Véron Marie-Françoise, Garcia-Huidobro Marta, Véron Laurent   +2 more
doaj   +1 more source

On the smoothings of non-normal isolated surface singularities

, 2015
We show that isolated surface singularities which are non-normal may have Milnor fibers which are non-diffeomorphic to those of their normalizations. Therefore, non-normal isolated singularities enrich the collection of Stein fillings of links of normal ...
Popescu-Pampu, Patrick
core   +1 more source

SINGULAR HERMITIAN METRICS WITH ISOLATED SINGULARITIES

Nagoya Mathematical Journal, 2022
AbstractIn this paper, we study the coherence of a higher rank analogue of a multiplier ideal sheaf. Key tools of the study are Hörmander’s $L^2$ -estimate and a singular version of a Demailly–Skoda-type result.
openaire   +3 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

On the distance function in domains with boundary

Bruno Pini Mathematical Analysis Seminar
We present some results on the regularity and the singularities of the distance function in domains with boundary.
Paolo Albano
doaj   +1 more source

Singularities with the highest Mather minimal log discrepancy

, 2013
This paper characterizes singularities with Mather minimal log discrepancies in the highest unit interval, i.e., the interval between $d-1$ and $d$, where $d$ is the dimension of the scheme.
Ishii, Shihoko, Reguera, Ana
core   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Performance Prediction Network for Serial Manipulators Inverse Kinematics solution Passing Through Singular Configurations

International Journal of Advanced Robotic Systems, 2011
This paper is devoted to the application of Artificial Neural Networks (ANN) to the solution of the Inverse Kinematics (IK) problem for serial robot manipulators, in this study two networks were trained and compared to examine the effect of considering ...
Ali T. Hasan, H.M.A.A. Al-Assadi
doaj  

Rational singularities

, 2020
A resolution-free definition of rational singularities is introduced, and it is proved that for a variety admitting a resolution of singularities, this is equivalent to the usual definition.
Kovács, Sándor J
core