Listar División de Nanociencias y Materiales por título
Mostrando ítems 331-350 de 566
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Nonlinear second order Ode's: factorizations and particular solutions
(2005)"We present particular solutions for the following important nonlinear second order differential equations: modified Emden, generalized Lienard, convective Fisher, and generalized Burgers-Huxley. For the latter two equations ... -
Nonlinear software sensor for monitoring genetic regulation processes with noise and modeling errors
(2005)"Nonlinear control techniques by means of a software sensor that are commonly used in chemical engineering could be also applied to genetic regulation processes. We provide here a realistic formulation of this procedure ... -
Nonsingular parametric oscillators Darboux-related to the classical harmonic oscillator
(2012)"Interesting nonsingular parametric oscillators which are Darboux related to the classical harmonic oscillator and have periodic dissipative/gain features are identi?ed through a modi?ed factorization method. The same ... -
Note on Hawking-Unruh effects in graphene
(2012)"Beltrami-shaped graphene sheets have been recently proposed as analogs of curved spacetimes with Hawking-Unruh e?ects detected through typi-cal condensed matter measurements involving scanning tunneling micro-scopes and ... -
Novel curved and strained carbon-based nanostructures: a theoretical study of their electronic properties and their response to laser excitations.
(2005)"In this thesis we review and discuss, from a theoretical point of view, the physical properties of a wide variety of carbon-based nano-materials. This work is focused on systems in which the atomic structures exhibit one ... -
Novel hetero-layered materials with tunable direct band gaps by sandwiching different metal disulfides and diselenides
(2013-03)"Although bulk hexagonal phases of layered semiconducting transition metal dichalcogenides (STMD) such as MoS2, WS2, WSe2 and MoSe2 exhibit indirect band gaps, a mono-layer of STMD possesses a direct band gap which could ... -
Observation of magnetic edge state in graphene nanoribbons
(2010-06)"The electronic structure and spin magnetism for few-layer-graphene nanoribbons synthesized by chemical vapor deposition have been investigated using near-edge x-ray absorption fine structure (NEXAFS) and electron-spin ... -
Obtención de membranas mediante electrospinning para tratamiento de agua con alto contenido de sólidos
(2019-12-12)"Hoy en día, la creciente tasa de población en el mundo ha traído como unas de las principales consecuencias la sobreexplotación de agua para consumo humano. En México, se tienen 471.5 mil millones de metros cúbicos de ... -
Obtención de membranas poliméricas para celdas de poder
(2017-08)"Las crecientes preocupaciones sobre el agotamiento de recursos energéticos derivados de los combustibles fósiles, y el problema de cambio climático asociados a éstos, han impulsado la búsqueda de diferentes alternativas ... -
Obtención y caracterización de membranas poliméricas para desalinización de agua.
(2017-07)"Cada día es más imperioso buscar nuevas fuentes de agua potable, y una de las alternativas más prometedoras es la desalinización del agua de mar por medio de membranas de ósmosis inversa. La presente investigación pretende ... -
Obtención y caracterización de nanopartículas de plata soportadas en fibra de algodón
(2013)"En este trabajo se prepararon biocompositos de nanopartículas de plata utilizando fibra de algodón como soporte y Camellia sinensis como agente reductor. Para la preparación de los biocompositos primero se llevó a cabo ... -
On arithmetic detection of grey pulses with application to Hawking radiation
(2002)"Micron-sized black holes do not necessarily have a constant horizon temperature distribution. The black hole remote-sensing problem means to find out the "surface" temperature distribution of a small black hole from the ... -
On the anisotropy in the HRTEM images of a decagonal quasicrystalline phase of the Al-Cu-Co-Si system
(2007)"Experimental evidence of an electrical and/or magnetic anisotropy was observed in the high resolution transmission electron microscope (HRTEM) images of a decagonal quasicrystalline (DQC) phase of the Al-Cu-Co-Si system. ... -
On the broadening of the magnetic entropy change due to Curie temperature distribution
(2014-05)"We have studied the correlation between the broadening of the isothermal magnetic entropy change and the Curie temperature (T-C) distribution in nanostructured Pr2Fe17 and Nd2Fe17 alloys produced by high-energy ball-milling ... -
On the correct estimation of the magnetic entropy change across the magneto-structural transition from the Maxwell relation: study of MnCoGeBx alloy ribbons
(Elsevier, 2017)"An accurate calculation of the different magnetocaloric-related magnitudes derived from the temperature dependence of the magnetic entropy change in materials exhibiting first-order magnetocaloric effect is imperative to ... -
On the kinetic arrest of martensitic transformation in Ni-Mn-In melt-spun ribbons
(2017)"Kinetic arrest (KA) of martensitic transformation (MT) has been observed in as-solidified Ni52.2Mn34.3In13.5 melt-spun ribbons; a characterization by dc magnetization measurements was carried out. These alloy ribbons ... -
On the synthesis, structural transformation and magnetocaloric behavior of Ni37.5Co12.5Mn35Ti15 melt-spun ribbons
(American Institute of Physics, 2021)"We fabricated Ni37.5Co12.5Mn35Ti15 melt-spun ribbons at linear wheel speeds (WS) of 20 and 8 ms(-1) (series A and B, respectively). The effect of a short time thermal annealing (30 min.) between 1023 K and 1173 K on the ... -
One-parameter Darboux-transformed quantum actions in thermodynamics
(2002)"We use nonrelativistic supersymmetry, mainly Darboux transformations of the general (one-parameter) type, for the quantum oscillator thermodynamic actions. Interesting Darboux generalizations of the fundamental Planck and ... -
One-parameter families of supersymmetric isospectral potentials from Riccati solutions in function composition form
(2014)"In the context of supersymmetric quantum mechanics, we define a potential through a particular Riccati solution of the composition form (F ◦ f)(x) = F(f(x)) and obtain a generalized Mielnik construction of one-parameter ... -
One-parameter isospectral special functions
(2003)"Using a combination of the ladder operators of Pina [1] and the Pammetric operators of Mielnik [2] we introduce second order linear differential equations whose eigenfunctions are isospectral to the special functions of ...