Results 41 to 50 of about 767,976 (182)

Cyclic Calcium Phosphate Electrodeposition on Porous Silicon

open access: yesInternational Journal of Electrochemical Science, 2012
Calcium phosphate (CaP) on porous silicon (PSi) has been proposed to generate composite bioceramics for osseous tissue regeneration. Usually, CaPs prepared by biomimetic and electrochemical methods stem from a single aqueous solution. We propose herein a
J. Hernández-Montelongo   +4 more
doaj   +1 more source

Synthesis and TL Characterization of Li2B4O7 Doped with Cooper and Manganese [PDF]

open access: yes, 2013
Copper (Cu) and manganese (Mn) doped tissue equivalent Li2B4O7 were prepared by solid state sintering. The glow curves shows a high temperature peak at 222 °C for Li2B4O7:Cu and for Li2B4O7:Mn at 218 °C.
Cruz Zaragoza, E.   +4 more
core   +2 more sources

New Approach Methodologies (NAMs) in Alternative Methods: A Comparative Cytotoxicity Analysis of Nanostructured Hydroxyapatite in Adipose Stem Cells Spheroids

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Toxicological assessment is essential in NP approval for health and medical applications. Although 2D cell culture has been widely used, 3D models, especially spheroids, provide better predictive value for toxicological risk assessments since they replicate complex cellular interactions more accurately.
Bianca Montenegro   +5 more
wiley   +1 more source

Nonlinear optimization for a tumor invasion PDE model [PDF]

open access: yes, 2016
In this work, we introduce a methodology to approximate unknown parameters that appear on a non-linear reaction–diffusion model of tumor invasion. These equations consider that tumor-induced alteration of micro-environmental pH furnishes a mechanism for ...
Fernández Ferreyra, Damián Roberto   +3 more
core   +1 more source

Effect of Zinc Oxide Nanoparticles From Infant Formula Milk Powder on Colon Cells In Vitro

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Zinc is an essential trace element that participates in numerous metabolic processes; however, excessive exposure may interfere with the absorption of other metals, such as copper. In recent years, nanotechnology has experienced rapid growth, and zinc oxide nanoparticles (ZnO NPs) have garnered significant attention due to their versatile ...
Gloria Salinas‐Lucero   +2 more
wiley   +1 more source

Experimental estimation of the longitudinal component of a highly focused electromagnetic field

open access: yesScientific Reports, 2021
The detection of the longitudinal component of a highly focused electromagnetic beam is not a simple task. Although in recent years several methods have been reported in the literature, this measure is still not routinely performed.
David Maluenda   +4 more
doaj   +1 more source

A Ghost Story II: Ghosts, Gluons and the Gluon condensate beyond the IR of QCD [PDF]

open access: yes, 2009
Beyond the deep IR, the analysis of ghost and gluon propagators still keeps very interesting non-perturbative information. The Taylor-scheme coupling can be computed and applied to obtain the $\Lambda_{\rm QCD}$ parameter from Landau gauge lattice ...
A. Le Yaouanc   +7 more
core   +1 more source

Si3N4 single-crystal nanowires grown from silicon micro and nanoparticles near the threshold of passive oxidation [PDF]

open access: yes, 2005
A simple and most promising oxide-assisted catalyst-free method is used to prepare silicon nitride nanowires that give rise to high yield in a short time.
Bertran, E.   +4 more
core   +4 more sources

Multimode Phonon Lasing via Self‐Induced Optical Coherent Pumping

open access: yesLaser &Photonics Reviews, EarlyView.
A silicon optomechanical nanobeam generates self‐sustained phonon lasing in multiple competing mechanical modes via self‐pulsing, an intrinsic optical modulation arising from cavity nonlinearity. This self‐organized mechanism enables robust multi‐frequency operation spanning periodic, quasi‐periodic, and chaotic regimes without external modulation. The
David Alonso Tomás   +5 more
wiley   +1 more source

Horizontal oscillation of a capillary bridge between a spherical grain and a flat surface [PDF]

open access: yesEPJ Web of Conferences
A granular system's behaviour can be significantly altered by humidity, as even small amounts of condensed liquid between grains affect particle movement.
Rojos Grisel   +3 more
doaj   +1 more source

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