Browsing División de Nanociencias y Materiales by Title
Now showing items 368-387 of 587
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Online monitoring of Mezcal fermentation based on redox potential measurements
(2009)"We describe an algorithm for the continuous monitoring of the biomass and ethanol concentrations as well as the growth rate in the Mezcal fermentation process. The algorithm performs its task having available only the ... -
Optical sectioning of unlabeled samples using bright-field microscopy
(National Academy of Science, 2022)"The bright-field (BF) optical microscope is a traditional bioimaging tool that has been recently tested for depth discrimination during evaluation of specimen morphology; however, existing approaches require dedicated ... -
Optimización del Tratamiento Químico y Térmico de Esferas de Carbono para Mejorar su Rendimiento como Supercapacitores
(2024-07-02)"In this work, a systematic study was carried out on the effect of temperature on the oxidation process of carbon spheres (CSs) to improve their capacitive performance. CSs were treated from naphthalene with HNO3 and H2SO4 ... -
Optimization of entanglement using genetic algorithms
(2012)"En tiempos recientes la búsqueda de un modelo más general de computación derivó finalmente en el concepto de la computadora cuántica, un esquema de procesamiento de información basado totalmente en fenómenos cuánticos. ... -
Optimizing the curie temperature of pseudo-binary RxR'2-xFe17 (R,R' = rare earth) for magnetic refrigeration
(IOP Publishing, 2014)"Several pseudo-binary RxR2-x'Fe-17 alloys (with R = Y, Ce, Pr, Gd and Dy) were synthesized with rhombohedral Th2Zn17-type crystal structure determined from x-ray and neutron powder diffraction. The choice of compositions ... -
Optimizing the oxidation level of PEDOT anode in air-PEDOT battery
(Elsevier, 2018)"We report an air-PEDOT battery where an optimized oxidation level of the PEDOT anode was performed using a simple dedoping process, resulting in batteries with high stability in air. Some PEDOT:PSS chains were reduced to ... -
Oxygenated surface of carbon nanotube sponges: electroactivity and magnetic studies
(American Chemical Society, 2019)"We report the synthesis of nitrogen-doped carbon nanotube sponges (N-CNSs) by pyrolysis of solutions of benzylamine, ferrocene, thiophene, and isopropanol-based mixture at 1020 degrees C for 4 h using an aerosol-assisted ... -
Parametric oscillators from factorizations employing a constant-shifted Riccati solution of the classical harmonic oscillator
(Elsevier, 2011)"We determine the kind of parametric oscillators that are generated in the usual factorization procedure of second-order linear differential equations when one introduces a constant shift of the Riccati solution of the ... -
Perceptual security of encrypted images based on wavelet scaling analysis
(2016)"The scaling behavior of the pixel fluctuations of encrypted images is evaluated by using the detrended fluctuation analysis based on wavelets, a modern technique that has been successfully used recently for a wide range ... -
Periodic Sturm-Liouville problems related to two Riccati equations of constant coefficients
(Elsevier, 2010)"We consider two closely related Riccati equations of constant parameters whose particular solutions are used to construct the corresponding class of supersymmetrically-coupled second-order differential equations. We solve ... -
Phase transformation and magnetocaloric effect of Co-doped Mn–Ni–In melt-spun ribbons
(American Institute of Physics, 2020)"Ribbon-shaped magnetocaloric materials are favorable to achieve high heat-transfer efficiencies due to their large specific surface area. In this work, Mn50Ni41−xIn9Cox (0 ≤ x ≤ 4) ribbons were prepared using a melt-spinning ... -
Phase transition and magnetocaloric properties of Mn50Ni42−xCoxSn8 (0 ≤ x ≤ 10) melt-spun ribbons
(International Union of Crystallography, 2018)"The characteristics of magnetostructural coupling play a crucial role in the magnetic field-driven behaviour of magnetofunctional alloys. The availability of magnetostructural coupling over a broad temperature range is ... -
Phase transition systematics in BiVO4 by means of high-pressure-high-temperature Raman experiments
(American Physical Society, 2018)"We report here high-pressure-high-temperature Raman experiments performed on BiVO4. We characterized the fergusonite and scheelite phases (powder and single crystal samples) and the zircon polymorph (nanopowder). The ... -
Photo-assisted inactivation of Escherichia coli bacteria by silver functionalized titanate nanotubes, Ag/H2Ti2O5H2O
(2017)"One-dimensional titanate nanotubes (H2Ti2O5·H2O) functionalized with silver nanoparticles (AgNPs) exhibited unique properties for the effective inactivation of the Gram-negative Escherichia coli within 45 minutes under ... -
Photoanodes modified with reduced graphene oxide to enhance photoelectrocatalytic performance of B-TiO2 under visible light
(2015)"The effect of reduced graphene oxide (rGO) content in boron-modified TiO2 nanocrystalline films on their photocatalytic activity in phenol oxidation is investigated. Visible-light-active TiO2 modified photoanodes were ... -
Photocatalytic properties of BiOCl-TiO2 composites for phenol photodegradation
(Elsevier, 2018)"BiOCl-TiO2 composites were synthesized by sol-gel method; using two commercial BiOCl (P2600 and SB) with different BiOCl-TiO2 weight ratios. They were characterized by different techniques such as X-ray diffraction (XRD), ... -
PI-controlled bioreactor as a generalized Liénard system
(Elsevier, 2007)"It is shown that periodic orbits can emerge in Cholette’s bioreactor model working under the influence of a PI-controller. We find a diffeomorphic coordinate trans-formation that turns this controlled enzymatic reaction ... -
Pine-tree-like morphologies of nitrogen-doped carbon nanotubes: Electron field emission enhancement
(2014)"Nitrogen-doped multiwalled carbon nanotube (CNT) bundles exhibiting pine-tree-like morphologies were synthesized on silicon-silicon oxide (Si/SiO2) substrates using a pressure-controlled chemical vapor deposition process. ... -
Planar motion with Fresnel integrals as components of the velocity
(Sociedad Mexicana de Física, A.C., 2020)"We analyze the two-dimensional motion of a rigid body due to a constant torque generated by a force acting on the body parallel to the surface on which the body moves extending an old note of Ferris-Prabhu [Am. J. Phys. ... -
Planeación en la era de las pandemias; una visión de futuro
(Academia Mexicana de Ciencias, 2020)"La pandemia ocasionada por el SARS-CoV-2 ha puesto al mundo entero al borde del colapso económico y de salud. Sorprende la falta de previsión en muchos países, México entre ellos. Tenemos la certeza de que otros eventos ...