Results 81 to 90 of about 43,124 (180)

Scattering theory for difference equations with operator coefficients

Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract We investigate a class of second‐order difference equations featuring operator‐valued coefficients with the aim of approaching problems of stationary scattering theory. We focus on various compact perturbations of the discrete Laplacian given in a Hilbert space of bi‐infinite square‐summable sequences with entries from a fixed Hilbert space ...
David Sher, Luis Silva, Boris Vertman, Monika Winklmeier   +3 more
wiley   +1 more source

Canonical interacting quantum fields on two-dimensional de Sitter space

Physics Letters B, 2017
We present the P(φ)2 model on de Sitter space in the canonical formulation. We discuss the role of the Noether theorem and we provide explicit expressions for the energy-stress tensor of the interacting model.
Christian D. Jäkel, Jens Mund
doaj   +1 more source

Micromagnetic simulations of persistent oscillatory modes excited by spin-polarized current in nanoscale exchange-biased spin valves

, 2008
We perform 3D micromagnetic simulations of current-driven magnetization dynamics in nanoscale exchange biased spin-valves that take account of (i) back action of spin-transfer torque on the pinned layer, (ii) non-linear damping and (iii) random thermal ...
Azzerboni, B., Consolo, G., Finocchio, G., Krivorotov, I. N., Siracusano, G., Torres, L.   +5 more
core   +1 more source

Impact of internal bremsstrahlung on the detection of gamma-rays from neutralinos [PDF]

, 2010
We present a detailed study of the effect of internal bremsstrahlung photons in the context of the minimal supersymmetric standard models and their impact on gamma-ray dark matter annihilation searches.
Cannoni, M., Gomez, M. E., Panella, O., Prada, F., Sanchez-Conde, M. A.   +4 more
core   +1 more source

A new parametrization of the neutrino mixing matrix for neutrino oscillations [PDF]

, 2001
In this paper we study three active neutrino oscillations, favored by recent data from SuperK and SNO, using a new parametrization of the lepton mixing matrix $V$ constructed from a linear combination of the unit matrix $I$, and a hermitian unitary ...
A. Bueno, A. Dziewonski, J.J. Gomez-Cadenas, L. Wolfenstein, M. Kobayashi, Q. Ahmad, S. Fukuda, S. Fukuda, S. Fukuda, S. Mikheyev, S.H. Ahn, T. Ota, V. Barger, V. Gupta, V.N. Gribov, Virendra Gupta, Xiao-Gang He, Z. Maki   +17 more
core   +2 more sources

Editorial

Mundo Nano, 2023
Mundo Nano celebra el vigésimo aniversario del Centro de Física Aplicada y Tecnología Avanzada (CFATA) de la UNAM, creado el primero de abril del 2002.
Mario Rogelio López Torres
doaj  

Interaction of glycine, lysine, proline and histidine with dipalmitoylphosphatidylcholine lipid bilayers: a theoretical and experimental study [PDF]

, 2015
The interaction of unblocked glycine, lysine, proline, and histidine (in their three forms, namely two tautomers and the protonated form) with a dipalmitoylphosphatidylcholine (DPPC) bilayer was assessed using extensive atomistic molecular dynamics ...
Ale, Norma Mercedes, Ben Altabef, Aida, Ciocco Aloia, Facundo, del Popolo, Mario Gabriel, Díaz, Sonia Beatriz, Gomez Zavaglia, Andrea, Masone, Diego Fernando, Porasso, Rodolfo Daniel, Vila, Jorge Alberto   +8 more
core   +1 more source

Ladder‐Type Benzene‐Perylene Dyes with Efficient Laser Properties in the Near‐IR by Detracting/Activating Low/High Frequency Vibronic Modes

Advanced Functional Materials, Volume 36, Issue 17, 26 February 2026.
The NNR‐n series of oligomeric nanographenes delivers exceptional emission performance. This work shows that this performance is originated by their ladder‐type structure, which effectively deactivates low‐frequency vibronic modes. This deactivation neglects the main pathway for non‐emissive deactivation, even in the near‐infrared region. The potential
Marcos Díaz‐Fernández, Álex Farrando Pérez, Fernando Gordillo Gámez, Pedro G. Boj, José M. Villalvilla, José A. Quintana, Yanpei Wan, Daniel Aranda, José Manuel Marín‐Beloqui, Jishan Wu, Zebing Zeng, María A. Díaz‐García, Juan Casado   +12 more
wiley   +1 more source

Física Aplicada ao Trânsito: Uma revisão de Literatura

Revista Thema, 2017
Uma das formas de se abordar a Física na Educação Básica para que sua aprendizagem possa ganhar maior significado é abordando fenômenos que façam parte da vida dos estudantes, como por exemplo as situações aplicadas no trânsito.
Patrick Alves Vizzotto, Luiz Fernando Mackedanz, Angélica Conceição Dias Miranda   +2 more
doaj   +3 more sources

Biosynthesis of Silver Nanoparticles Using Black Pepper (Piper nigrum) Seed Extract and Evaluation of Their Cytotoxicity

Chemistry &Biodiversity, Volume 23, Issue 2, February 2026.
This study reports the green biosynthesis of piperine‐functionalized silver nanoparticles from Piper nigrum seed extract, followed by comprehensive physicochemical characterization and in vitro cytotoxic evaluation. The results confirm successful nanocomposite formation and demonstrate a marked enhancement of cytotoxic activity against gastric cancer ...
Nylton Ferreira Maciel, Gleice VasconcelosPereira do Lago, Glauce Vasconcelos da Silva Pereira, Ingryd Nayara de Farias Ramos, Aline Costa Bastos, Igor Alexandre Rocha Barreto, Nathiel Sarges Moraes, Marcos NazarenoLauné dos Santos, João Augusto Pereira da Rocha, Alencar Kolinski Machado, Waldomiro Gomes Paschoal Junior, Marcio Marcelo da Silva Pessoa, Maria de Nazaré Maciel Uesugi, André Salim Khayat, Jorddy Neves Cruz, José de ArimatéiaRodrigues do Rêgo, Maria Regina Sarkis Peixoto Joele, Davi do Socorro Barros Brasil   +17 more
wiley   +1 more source