Results 61 to 70 of about 6,265 (137)

SORCIÓN DE CROMO UTILIZANDO AQUENIO DE PLATANUS X HISPÁNICA

Avances en Ciencias e Ingeniería, 2018
Debido a su alta toxicidad, el cromo debe eliminarse de las aguas residuales industriales que lo contienen antes de descargarlas en los cuerpos acuíferos.
Silvia I. García, Liz Candia, María I. Frascaroli, Juan C. González   +3 more
doaj  

Hybrid Quatsome‐Encapsulated Silver Nanoparticles as Stable Plasmonic Substrates for Surface‐Enhanced Raman Scattering

Journal of Raman Spectroscopy, EarlyView.
In this work, silver nanoparticles encapsulated within quatsome membranes have shown to preserve their plasmonic properties for at least 165 days without aggregation. These hybrid nanostructures enable strong SERS enhancement of pyrene and Prodan by confining the molecules within a few nanometers from the silver surface.
Renato Cezar Peramezza Ribeiro, Caio Hiroaki Miyake, Pedro Henrique Figueiredo Backes Costa, Jhenifer Hallen Braga Mauricio, Ana Luiza Correa Januário, Diogo Soga, Evandro Luiz Duarte, Márcia de Almeida Rizzutto, Rômulo Augusto Ando, Antonio Rodrigues da Cunha, Erix Alexander Milán‐Garcés   +10 more
wiley   +1 more source

Computational Modeling of Tensile Stress Effects on the Structure and Stability of Prototypical Covalent and Layered Materials

Nanomaterials, 2019
Understanding the stability limit of crystalline materials under variable tensile stress conditions is of capital interest for technological applications. In this study, we present results from first-principles density functional theory calculations that
Hocine Chorfi, Álvaro Lobato, Fahima Boudjada, Miguel A. Salvadó, Ruth Franco, Valentín G. Baonza, J. Manuel Recio   +6 more
doaj   +1 more source

Biofertilization of canola seeds with Peribacillus simplex and Paenibacillus polymyxa bacteria increases tocopherol content

JSFA reports, EarlyView.
Abstract Background Biofertilization with plant growth‐promoting bacteria (PGPB) is a reliable strategy to reduce the amounts of chemical fertilizers applied to crops. Nevertheless, the effects of biofertilizers on plant chemical constituents that influence food quality and human health should be evaluated.
Pilar Martínez‐Hidalgo, José David Flores‐Félix, José M. Igual, Encarna Velázquez, Fernando González‐Andrés, Eustoquio Martínez‐Molina   +5 more
wiley   +1 more source

OSCILACIONES DE UNA CUERDA CON MASAS CONCENTRADAS

Anales (Asociación Física Argentina), 2006
En este trabajo se estudian teórica y experimentalmente las oscilaciones de una cuerda homogénea, fija en sus dos extremos, sobre la que se han colocado un número finito de masas concentradas.
B. Gomez, C. Repetto, S. Stia, R. Welti
doaj  

Lattice Resonances in Periodic Arrays of Time‐Modulated Scatterers

Laser &Photonics Reviews, EarlyView.
This work explores how periodic time modulation alters the collective optical behavior of periodic arrays of scatterers, shedding light on the critical role of collective effects in time‐varying photonic systems and unveiling new opportunities for amplification, active control, and nonreciprocal functionalities.
María Blanco de Paz, Juan R. Deop‐Ruano, Diego M. Solís, Alejandro Manjavacas   +3 more
wiley   +1 more source

ABP Y TICS ADAPTADOS A LOS LABORATORIOS DE PRÁCTICAS DE QUÍMICA FÍSICA: SU INSERCIÓN E IMPLEMENTACIÓN

Pixel-Bit, 2010
El trabajo que se presenta está basado en la experiencia docente llevada a cabo en los grupos de laboratorio de las asignaturas Termodinámica Química y Experimentación en Química Física, de primer y segundo curso de la Licenciatura en Química.
Antonio Sánchez Coronilla
doaj  

Covalent Functionalization of NiFe Layered Double Hydroxides using Tris(Hydroxymethyl)Aminomethane

Small, EarlyView.
Covalent functionalization of NiFe layered double hydroxides with tris(hydroxymethyl)aminomethane enables controlled growth, enhanced structural order, and improved processability. Temporary TRIS anchoring promotes stable water‐based inks and binder‐free electrode fabrication, leading to enhanced oxygen evolution activity and long‐term stability under ...
Alvaro Seijas Da Silva, Federico Juarez‐Dominguez, Víctor Oestreicher, Martín Mizrahi, Diego Hunt, Bruno J. C. Vieira, Joao C. Waerenborgh, Valeria Ferrari, Gonzalo Abellán   +8 more
wiley   +1 more source

Impacts of Fluorination at the Ortho‐Position of Carboxy Groups on Tetrakis(biphenyl)ethene‐Based Hydrogen‐Bonded Framework

Small, EarlyView.
This work provides new findings on the effect of fluorination on the substitution of TPE derivatives and the modulation of the structure and fluorescence properties of hydrogen‐bonded organic framework (HOF) of F‐CBPE. ABSTRACT Fluorination of building block molecules is one of the effective engineering approaches to modulate molecular assembly in ...
Takuto Fujii, Mario de la Hoz Tomás, Ryusei Oketani, Boiko Cohen, Ken‐ichi Otake, Kazuki Shiga, Norimitsu Tohnai, Abderrazzak Douhal, Ichiro Hisaki   +8 more
wiley   +1 more source

Seasonal evolution of cholorophyll-a and cyanobacteria (Prochlorococcus and Synechococcus) on the northeast continental shelf of the Gulf of Cádiz: relation to thermohaline and nutrients fields

Scientia Marina, 2013
The seasonal evolution of nutrients, chlorophyll-a (chl-a) and cyanobacteria (Synechococcus and Prochlorococcus) on the northeast continental shelf of the Gulf of Cádiz was observed during four cruises in summer and autumn 2006 and winter and spring 2007.
Eleonora Anfuso, Bibiana Debelius, Carmen G. Castro, Rocio Ponce, Jesus M. Forja, Luis M. Lubian   +5 more
doaj   +1 more source