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Now showing items 1-20 of 411

Modeling of the Catalytic Removal of CO and NO in Dry Combustion Gases

Prince, JC; Treviño, C (2010)

Catalytic removal of pollutants in dry combustion gases in a planar stagnation-point flow over a platinum foil is studied using both numerical and analytical tools. The governing equations have been numerically integrated ...
Microscopic derivation of the Helmholtz force density on a magnetic fluid in an electromagnetic field

Jimenez, JL; Campos, I; López-Marino, MA (2010)

The results obtained by Lai, Suen and Young (Phys Rev A, 25 (1982) 1755) for the Helmholtz force density in a dielectric fluid using a microscopic model are extended to the magnetic case The limitations of tins force density ...
Datos y reportes en el laboratorio de Mecánica

Garduño, R (Las Prensas de Ciencias, 2002)

Este manual trata del análisis y reporte experimental de las prácticas que integran el curso de Prácticas de Laboratorio de Mecánica de la carrera de física de la Facultad de Ciencias e intenta responder a la carencia ...
Structural and Electronic Properties of Cubic CeO2: Unpaired Electrons in CeO2

Quintanar, C; Caballero, R; Barreto, J; Chavira, E; Marinero, EE (2010)

The high performance of cerium dioxide (CeO2) as support for Au in catalysis relies on its ability to anchor Au clusters and transfer charge to the gold nanoparticles. These two processes are governed by oxygen vacancy ...
Who is whistling? Localizing and identifying phonating dolphins in captivity

Bazua-Duran, C; López-Rivas, RM (2010)

Acoustic communication through whistles is well developed in dolphins. However, little is known on how dolphins are using whistles because localizing the sound source is not an easy task. In the present study, the hyperbola ...
Variable Thermal Conductivity and Perforation Effects on a Heat-Conducting Plate

Cajas, JC; Lizardi, J; Treviño, C (2010)
Absolute differential and total cross sections for neutral fragments from dissociative collisions of triatomic hydrogen like ions on He

Yousif, FB; Fuentes, BE; Martínez, H (2010)

Neutral fragment products from dissociative collisions of triatomic hydrogen like ions incident on He atoms were studied. Absolute differential and total cross sections are reported here in the energy range of 1.00-5.00 ...
Electronic spectra of one-dimensional nano-quasi-periodic systems under bias

Perez-Maldonado, MT; Monsivais, G; Velasco, V; Stern, C; Rodríguez-Ramos, R (2010)

We investigate the properties of the energy spectra of quantum one-dimensional nano-quasi-crystals in the presence of external electric fields. These systems are modelled by means of finite sequences, ordered according to ...
RHEOLOGY OF CONCENTRATED EMULSIONS OF SPHERICAL DROPLETS

Mendoza, CI; Santamaria, I (2010)

We propose a viscosity model accounting for experiments of emulsions of two immiscible liquids at arbitrary volume fractions. The model is based on a recursive-differential method formulated in terms of the appropriate ...
ANOMALOUS BEHAVIOR OF IDEAL FERMI GAS BELOW 2D: THE "IDEAL QUANTUM DOT" AND THE PAUL EXCLUSION PRINCIPLE

Grether, M; De Llano, M; Lee, MH (2009)

A physical interpretation is given to a curious "hump" that develops in the chemical potential as a function of absolute temperature in an ideal Fermi gas for any spatial dimensionality d<2, integer or not, in contrast ...
Hadron production in electron-positron annihilation computed from the gauge-gravity correspondence

Patino, L; Sánchez, GT (2009)

We provide a nonperturbative expression for the hadron production in electron-positron annihilation at zero temperature in a strongly coupled, large-N-c SU(N-c) field theory with N-f < N-c quark flavors. The resulting ...
Image reconstruction of nuclear masses

Morales, IO; Mendoza-Temis, J; Barea, J; Frank, A; Hirsch, JG; Vieyra, JCL; Van Isacker, P; Velázquez Aguilar, VM (2009)

The differences between measured masses and Liquid Drop Model (LDM) predictions have well known regularities, which can be analyzed as a two-dimensional texture on the N-Z plane. The remaining microscopic effects, obtained ...
Diffusion coefficients for multi-step persistent random walks on lattices

Gilbert, T; Sanders, D (2010)

We calculate the diffusion coefficients of persistent random walks on lattices, where the direction of a walker at a given step depends on the memory of a certain number of previous steps. In particular, we describe a ...
Bifurcations of periodic and chaotic attractors in pinball billiards with focusing boundaries

Arroyo, A; Markarian, R; Sanders, D (2009)

We study the dynamics of billiard models with a modified collision rule: the outgoing angle from a collision is a uniform contraction, by a factor lambda, of the incident angle. These pinball billiards interpolate between ...
Precursors of long-range order and local disorder in colloids

Mayorga, M; Romero-Salazar, L; Rubi, JM; Osorio-González, D; Santamaria, I (2009)

We show the existence of precursors of crystalline and amorphous phases preceding the appearance of freezing and glass transitions in colloidal systems. The formation of crystalline clusters or amorphous local arrangements ...
Absolute Differential and Total Cross Sections for the Production of Neutral Fragments from Dissociative Collisions of Triatomic Hydrogen Like Ions in He

Fuentes, BE; Martínez, H (2009)

Neutral products from dissociative collisions of triatomic hydrogen like ions incident on He atoms were studied. Absolute differential and total cross sections are reported in the energy range of 1.25 and 5.00 keV for ...
Classical and quantum motion in an inverse square potential

Avila-Aoki, M; Cisneros, C; Martínez-Y-Romero, RP; Nunez-Yepez, HN; Salas-Brito, AL (2009)

Classical motion in an inverse square potential is shown to be equivalent to free motion on a hyperbola. The existence of a classical splitting between the q > 0 and q < 0 regions of motion is demonstrated. We show that ...
Perspectives on nuclear mass formulae

Barea, J; Frank, A; Hirsch, JG; Van Isacker, P; Mendoza-Temis, J; Morales, I; Pittel, S; López-Vieyra, JC; Velázquez, VM (2008)

We discuss different nuclear mass tables (experimental and calculated) in the context of the Garvey-Kelson relations and show how these relations can provide a very useful tool to test and improve the consistency of the models.
Ab initio electronic structure of the eclipsed and staggered conformations of the kappa-(BEDT-TTF)(2)Cu[N(CN)(2)] Br organic superconductor

Orgaz, E; Aburto, A (2008)

We investigated ab initio the electronic structure of both conformers exhibited by the kappa-(BEDT-TTF)(2)Cu[N(CN)(2)] Br organic superconductor at ambient as well as low temperatures. We found that the eclipsed structure ...
Reduced Kinetic Mechanism for High-Temperature Propane Ignition

Prince, JC; Williams, FA; Treviño, C (2008)

The high-temperature ignition (above 1100 K) of propane and air mixtures is studied in this work. The initial detailed mechanism consists of 177 elementary reactions with 40 species, which reproduces the ignition time of ...

Now showing items 1-20 of 411

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