Results 101 to 110 of about 567,993 (282)

Dynamical Casimir effect for a massless scalar field between two concentric spherical shells

, 2008
In this work we consider the dynamical Casimir effect for a massless scalar field -- under Dirichlet boundary conditions -- between two concentric spherical shells.
F. Pascoal, H. B. G. Casimir, H. Frenzel, K. Johnson, L. C. Céleri, M. H. Y. Moussa, N. Marinesco, N. N. Bogoliubov, N. N. Bogoliubov, S. S. Mizrahi, V. V. Dodonov   +10 more
core   +1 more source

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

Essential Trace Elements in the Shells of Commercial Mollusk Species from the Black Sea and Their Biotechnological Potential

Animals
Among the commercial mollusks from the Black Sea, the ark clam Anadara kagoshimensis, the oyster Crassostrea gigas, the mussel Mytilus galloprovincialis, the scallop Flexopecten glaber ponticus, and the gastropod Rapana venosa hold the top positions in ...
Larisa L. Kapranova, Juliya D. Dikareva, Sergey V. Kapranov, Daria S. Balycheva, Vitaliy I. Ryabushko   +4 more
doaj   +1 more source

The stress-strain state of ribbed shell structures

Инженерно-строительный журнал, 2017
The paper presents an analysis of the stress-strain state of shallow shell structures of double curvature, reinforced from the concave side by a various number of stiffeners.
Vladimir Karpov, Oleg Ignat'ev, Alexey Semenov   +2 more
doaj   +1 more source

Newtonian and General Relativistic Models of Spherical Shells - II

, 2010
A family of potential-density pairs that represent spherical shells with finite thickness is obtained from the superposition of spheres with finite radii.
Andréasson, Andréasson, Binney, Bičák, D. Vogt, Dehnen, Gleiser, González, Hernquist, Jaffe, Kalnajs, Kellog, Letelier, Morgan, Navarro, P. S. Letelier, Plummer, Rein, Thomson, Tremaine, Vogt, Zhao   +21 more
core   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

VARIATIONAL METHOD FOR DERIVATION OF EQUATIONS OF MIXED TYPE FOR SHELLS OF A GENERAL TYPE

Architecture and Engineering, 2016
In this work, derivation of equations of a mixed type for shallow shell constructions of an arbitrary type is carried out by means of the variational method.
Vladimir Karpov
doaj   +1 more source

Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires

Advanced Functional Materials, EarlyView.
In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton, Naëmi Leo, Jakub Jurczyk, Claire Donnelly, Dédalo Sanz‐Hernández, Luka Skoric, Nicholas Mille, Stefan Stanescu, Donald A MacLaren, Rachid Belkhou, Aurelio Hierro‐Rodriguez, Amalio Fernández‐Pacheco   +11 more
wiley   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

Advanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Optimization of shells modeled using NURBS subjected to a dynamic loading condition

REM: International Engineering Journal, 2019
This study presents an optimization method for the thickness of shell elements subjected to dynamic loads. Structural analyses were carried out using the finite element method.
Hélio Gomes Filho, Etereldes Gonçalves Júnior, Elcio Cassimiro Alves   +2 more
doaj   +1 more source