Results 41 to 50 of about 109,310 (329)

On the Local Well-posedness of a 3D Model for Incompressible Navier-Stokes Equations with Partial Viscosity [PDF]

, 2011
In this short note, we study the local well-posedness of a 3D model for incompressible Navier-Stokes equations with partial viscosity. This model was originally proposed by Hou-Lei in \cite{HouLei09a}.
Hou, Thomas Y., Shi, Zuoqiang, Wang, Shu
core   +1 more source

Analysis of the diffuse-domain method for solving PDEs in complex geometries

, 2015
In recent work, Li et al.\ (Comm.\ Math.\ Sci., 7:81-107, 2009) developed a diffuse-domain method (DDM) for solving partial differential equations in complex, dynamic geometries with Dirichlet, Neumann, and Robin boundary conditions.
Lervåg, Karl Yngve, Lowengrub, John
core   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Low-lying gravitational modes in the scalar sector of the global AdS_4 black hole

, 2008
We compute the quasinormal frequencies corresponding to the scalar sector of gravitational perturbations in the four-dimensional AdS-Schwarzschild black hole by using the master field formalism of hep-th/0305147.
C.P. Herzog, D.T. Son, E. Witten, G. Policastro, G. Policastro, Georgios Michalogiorgakis, I.G. Moss, J. Natario, J.J. Friess, J.M. Maldacena, Silviu S Pufu, V. Cardoso   +11 more
core   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Scalar perturbation around rotating Einstein-bumblebee BTZ black holes under Robin boundary conditions: Quasinormal modes and superradiance

Physics Letters B
We investigate the scalar perturbation around a rotating Einstein-bumblebee BTZ black hole under Robin boundary conditions. It is shown that the relationship curves between real and imaginary parts of scalar quasinormal modes in the complex plane depend ...
Chengjia Chen, Fengkai Ge, Qiyuan Pan, Jiliang Jing   +3 more
doaj   +1 more source

Boundary dynamics and multiple reflection expansion for Robin boundary conditions [PDF]

Physical Review D, 2002
In the presence of a boundary interaction, Neumann boundary conditions should be modified to contain a function S of the boundary fields: (\nabla_N +S) =0. Information on quantum boundary dynamics is then encoded in the $S$-dependent part of the effective action.
Bordag, Michael, Falomir, Horacio Alberto, Santángelo, Eve Mariel, Vassilevich, Dmitri   +3 more
openaire   +3 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Uniform resolvent convergence for strip with fast oscillating boundary

, 2013
In a planar infinite strip with a fast oscillating boundary we consider an elliptic operator assuming that both the period and the amplitude of the oscillations are small.
Amirat, Amirat, Amirat, Arrieta, Arrieta, Arrieta, Arrieta, Belyaev, Birman, Birman, Birman, Birman, Bogolyubov, Borisov, Borisov, Borisov, Borisov, Borisov, Borisov, Bunoiu, Cardone, Cardone, Carmen Perugia, Chechkin, Chechkin, Chechkin, Chechkin, Dancer, Denis Borisov, Friedman, Friedman, Giuseppe Cardone, Gobbert, Ilʼin, Kozlov, Ladyzhenskaya, Luisa Faella, Marušić-Paloka, Melʼnik, Mikelić, Nazarov, Nazarov, Nazarov, Olejnik, Pastukhova, Pastukhova, Reed, Vasilevskaya, Zhikov, Zhikov, Zhikov, Zhikov   +51 more
core   +1 more source

A Bespoke Programmable Interpenetrating Elastomer Network Composite Laryngeal Stent for Expedited Paediatric Laryngotracheal Reconstruction

Advanced Functional Materials, EarlyView.
A programmable interpenetrating double‐network architecture, created via 3D‐TIPS printing and resin infusion, synergistically combines thermoplastic and thermosetting elastomers to balance structural rigidity and surface softness—crucial for paediatric laryngeal stents.
Elizabeth F. Maughan, Lei Wu, Dong Zhang, Linxiao Wu, Graca Ferreira Vaz Pinto Mendes, Wanqiao J. Tu, Heping Ma, Toby J. Proctor, Colin R. Butler, Thomas Kjærgaard, Mark W. Lowdell, Martin A. Birchall, Robert E. Hynds, Richard Hewitt, Wenhui Song   +14 more
wiley   +1 more source