Results 21 to 30 of about 11,982 (170)

Recubrimiento por láser de aleaciones cuasicristalinas

Revista de Metalurgia, 1998
Los cuasicristales constituyen un nuevo tipo de estructuras ordenadas con características metaestables a temperatura ambiente. En general, en determinadas aleaciones, pueden obtenerse por enfriamiento rápido desde el estado líquido. Han demostrado poseer
F. Audebert, R Colaço, R. Vilar, H. Sirkin   +3 more
doaj   +1 more source

Dual‐Emission Switching in a Mn(II)‐Based Hybrid Bromide via Water Coordination: Synthesis, Structure, and Processing

Advanced Optical Materials, Volume 14, Issue 4, 27 January 2026.
This study reports the synthesis, structure, and optical properties of (pr‐ted)2[MnBr4], a luminescent manganese (II) hybrid halide. It shows green emission under UV and transforms into a red‐emitting hydrated phase with humidity, reversible by heat or vacuum. Structural, photophysical, and theoretical analyses confirm the mechanism.
Ricardo Garsed, Guillermo Hernanz, Josefina Perles, José Ignacio Martínez, Aurelio Cabeza Díaz, Eugenio Cantelar, Félix Zamora, Javier Troyano, Pilar Amo‐Ochoa   +8 more
wiley   +1 more source

Behavior of Yb3+ and Er3+ during Heat Treatment in Oxyfluoride Glass Ceramics

Journal of Nanomaterials, Volume 2014, Issue 1, 2014., 2014
The effects of alumina content and heat treatment on upconversion properties of codoped (ErF3‐YbF3) oxyfluoride glass ceramics were investigated. Results showed that alumina content had an effect on phase separation and viscosity of the glass. Due to the high viscosity of low alumina content glass, the phase separated areas were smaller in these ...
M. H. Imanieh, I. R. Martín, J. Gonzalez-Platas, B. Eftekhari Yekta, V. K. Marghussian, S. Shakhesi, Mohsen Rahmani   +6 more
wiley   +1 more source

Películas delgadas de Al2O3 sobre silicio preparadas por ablación láser

Revista de Metalurgia, 1998
Se depositaron películas delgadas de Al2O3 por ablación láser sobre Si3N4/Si para utilizarlas como aislante térmico y eléctrico en dispositivos sensores de gases.
A. Lamagna, S. Duhalde, L. Correrá, S. Nicoletti   +3 more
doaj   +1 more source

“OBTENCIÓN Y CARACTERIZACIÓN DE NANOPARTÍCULAS DE BISMUTO Y ÓXIDO DE BISMUTO POR ABLACIÓN LÁSER EN MEDIO LÍQUIDO” [PDF]

, 2013
La formación de nanopartículas por ablación láser en medio líquido ha sido desarrollada como una técnica novedosa con ciertas ventajas, comparada con las rutas químicas.
Olea Mejía, Oscar Fernando, Velarde Granados, Emmanuel   +1 more
core  

Detection of Microbial Contaminants in Water: Conventional Methods, Pragmatic Alternatives, and Nanosensing Techniques

MicrobiologyOpen, Volume 14, Issue 6, December 2025.
Conventional culture and immunological methods of detecting bacterial water contaminants have some limitations. There are alternative pragmatic methods which are more efficient and faster in the detection of bacteria in water, especially nanosensors. ABSTRACT The complexities of microbial detection and conventional enumeration necessitates the adoption
Adeyemi O. Adeeyo, Joshua N. Edokpayi, Mercy A. Alabi, Joshua A. Oyetade, Eunice Ubomba‐Jaswa, Penny Jaca, Rachel Makungo   +6 more
wiley   +1 more source

Time‐Resolved Investigation of the Molecular Chemiluminescence SrI(A2∏1/2,3,2,B2∑+→X2∑+) and the Atomic Resonance Fluorescence Sr(53P1→51S0) Following The Pulsed Dye Laser Generation Of Sr(53PJ) in the Presence of CF3I

Laser Chemistry, Volume 16, Issue 2, Page 121-138, 1995., 1995
A time‐resolved investigation is presented of the electronic energy distribution in SrI following the collision of the optically metastable strontium atom, Sr [5s5p(3PJ)], with the molecule CF3I. Sr[5s5p(3PJ)], 1.807 eV above its 5s2(1S0) electronic ground state, was generated by pulsed dye‐laser excitation of ground state strontium vapour to the Sr ...
S. Antrobus, D. Husain, Jie Lei, F. Castaño, M. N. Sanchez Rayo   +4 more
wiley   +1 more source

Contaminación ondulatoria

Ingeniería, 2011
Los efectos producidos por los fenómenos ondulatorios comprenden beneficios  muy importantes prara nuestra civilización, pero también, dependiendo principalmente de su nivel de intensidad, es posible que cada uno de los tipos de ondas caracterizado por ...
Alvar Saborío Ruiz
doaj   +1 more source

Vulnerability of tropical fish communities across depth in the central Indian Ocean

Conservation Biology, Volume 39, Issue 6, December 2025.
Abstract Coral reefs and their fish communities below scuba diving depth (>30 m), in mesophotic coral ecosystems (MCEs) (∼30–150 m), in rariphotic (150–300 m), and in upper bathyal waters (300–500 m) are often underexplored, especially in the Indian Ocean.
Paris V. Stefanoudis, Nina M. de Villiers, Mariyam Shidha Afzal, Hana Amir, Farah Amjad, Aminath Shaha Hashim, Ahmed Riyaz Jauharee, Ryan Palmer, Alex D. Rogers, Mohamed Shimal, Shafiya Naeem, Mohamed Ahusan, Lucy C. Woodall   +12 more
wiley   +1 more source

Direct Measurements of Removal Rates of CHF(X˜1A′(0,1,0)) by Simple Alkenes

Laser Chemistry, Volume 12, Issue 1-2, Page 43-52, 1992., 1991
Direct measurements of the rate constants for collisional removal of CHF(X˜1A′(0,1,0)) by argon (Ar), ethylene (C2H4), propene (C3H6), 1‐butene (1‐C4H8), iso‐butene (i‐C4H8), 1,3‐butadiene (C4H6), are reported. CHF(X˜1A′(0,1,0)) was prepared by IRMPD of precursor CH2F2. Fluence independence removal rate constants by Ar, ethylene and propene are: 0.0045,
José A. Fernández, Alfredo Ortiz de Zárate, María N. Sánchez Rayo, Fernando Castaño   +3 more
wiley   +1 more source