Casimir-like tunneling-induced electronic forces

We study the quantum forces that act between two nearby conductors due to electronic tunneling. We derive an expression for these forces by calculating the flux of momentum arising from the overlap of evanescent electronic fields. Our result is written in terms of the electronic reflection amplitudes of the conductors and it has the same structure as Lifshitz's formula for the electromagnetically mediated Casimir forces. We evaluate the tunneling force between two semiinfinite conductors and between two thin films separated by an insulating gap. We discuss some applications of our results.Comment: 8 pages, 3 figs, submitted to Proc. of QFEXT'05, to be published in J. Phys.

The Abrikosov vortex structure revealed through near-field radiative heat exchange

One of the signatures of superconductivity is the formation of the Abrikosov vortex lattice in type-II superconductors in the presence of an external magnetic field. Here, we study the near-field radiative heat transfer between a spherical nanoparticle and a nearby planar substrate, both made of optimally-doped YBa$_2$Cu$_3$O$_{7-\delta}$. We show that the heat flux displays a periodic spatial pattern congruent with the material optical response modulated by the Abrikosov lattice. Our results enrich the toolbox of methods available to study non-conventional superconductivity.Comment: 3 figures, Supplementary material availabl

Hoopoe: Simulation of Extreme Programming

Experts agree that “smart” communication are an interesting new topic in the field of cryptography, and systems engineers concur. In our research, we verify the visualization of DNS [34]. In this paper we propose a novel system for the simulation of the memory bus (Hoopoe), which we use to disprove that suffix trees can be made self-learning, interposable, and ubiquitous

High-multipolar effects on the Casimir force: the non-retarded limit

We calculate exactly the Casimir force or dispersive force, in the non-retarded limit, between a spherical nanoparticle and a substrate beyond the London's or dipolar approximation. We find that the force is a non-monotonic function of the distance between the sphere and the substrate, such that, it is enhanced by several orders of magnitude as the sphere approaches the substrate. Our results do not agree with previous predictions like the Proximity theorem approach.Comment: 7 pages including 2 figures. Submitted to Europjysics Letter

Supporting clinical information management by NFC technology

Tele-monitorization is a problem with aging people living alone since the vital signs control is complicated for them. In this sense, some initiatives by adapting technologies make easy these controls. In this work we present a solution consist of the Near Field Communications technology adaptability. Mobile phones NFC enabled serving as a middleware between measure devices and people. In addition, a proposal for managing clinical information and medicine prescription are presented.Tele-monitorization is a problem with aging people living alone since the vital signs control is complicated for them. In this sense, some initiatives by adapting technologies make easy these controls. In this work we present a solution consist of the Near Field Communications technology adaptability. Mobile phones NFC enabled serving as a middleware between measure devices and people. In addition, a proposal for managing clinical information and medicine prescription are presented

Nuevas categorías de trofeos de venado cola blanca (odocoileus virginianus) del safari club internacional, para México

  The white-tailed deer (Odocoileus virginianus) is the most important big game mammal in Mexico and North America. In Mexico there are 14 subspecies that are distributed throughout the country except in the peninsula of Baja California. As trophy big game, this cervid is recorded in several record books as: the Boone & Crockett Club (B&C) and the one of Safari Club International (SCI). The “texanus” and the “couesi” subspecies are the only ones which qualify for the B&C. The SCI classifies four categories: two northern subspecies: “couesi” and the “texanus”, and two other categories; Mexican and Central American. Due to the above the more valued subspecies by the record books are the northern as texanus, carminis and couesi .As a result of this, there has been low demand for sport hunting and there are few records of the deer subspecies in central and southern Mexico. Therefore, in 2012 the SCI included seven new categories of big game trophies of that cervid, with the objective to revalue hunting these geographical races. Consequently, the regional distribution of the subspecies for Mexico was discussed to establish the new categorization at the regional, state and municipal level. The seven new categories are: Coues white-tailed deer, Carmen Mountains white-tailed deer, Mexican Texanus white-tailed deer, Mexican Pacific coast white-tailed deer, Mexican Central Plateau white-tailed deer, Mexican gulf coast white-tailed deer and Central America white-tailed deer. In addition the SCI chapter Monterrey established the Thummler Award in two categories: Gold and Diamond, which include among other Mexican deer species and subspecies, five and seven categories of white-tailed deer respectively. This regionalization, seeks to increase the sustainable use of trophy game in a more evenly way in the country, and that in the future these regions receive ecological, economic and social benefits.  El venado cola blanca (Odocoileus virginianus) es el mamífero de caza mayor más importante de México y Norteamérica. En México se existen 14 subespecies que se distribuyen en todo el país excepto en la península de Baja California. Como trofeo cinegético, este cérvido es registrado por medio de varios libros de records como: el Boone & Crockett Club (B&C) y el del Safari Club Internacional (SCI). El B&C solo califican las subespecies “texanus” y la “couesi”. El SCI clasifica cuatro categorías: dos subespecies norteñas: “couesi” y el “texanus”, y otras dos categorías; mexicanos y centroamericanos. Debido a lo anterior las subespecies más valoradas por los libros de records son las norteñas como texanus, carminis y couesi .Como consecuencia, ha existido baja demanda para la caza deportiva y existen pocos registros de las subespecies del venado en centro y sur de México. Por lo tanto el SCI incluyó el año 2012 siete nuevas categorías de trofeos de caza de ese cérvido, con el objetivo revalorar cinegéticamente esas razas geográficas. Para lo cual, se analizó de la distribución regional de las subespecies para México, para de esta forma establecer la nueva categorización a nivel regional, estatal y municipal. Las siete nuevas categorías son: Venado cola blanca de Coues, Venado cola blanca de la Sierra del Carmen, Venado cola blanca Mexicano de Texas, Venado Cola Blanca Mexicano de la Costa del Pacífico, Venado cola blanca Mexicano del Altiplano; Venado cola blanca Mexicano de las costas del Golfo, y Venado cola blanca de América Central. Además el SCI capitulo Monterrey instituyo el Premio Thummler en dos categorías: Oro y Diamante, que incluyen entre otras especies y subespecies de cérvidos mexicanos, cinco y siete categorías de venado cola blanca respectivamente. Con esta regionalización, se busca incrementar el uso sustentable de trofeos de caza de forma más homogénea en el país, y que a futuro esas regiones reciban benéficos ecológicos, económicos y sociales

Correlation between obesity and severity of distal radius fractures

Introduction: The incidence of obesity has increased significantly worldwide. Our hypothesis was that patients with obesity have a more severe distal radius fracture and we realized a study to evaluate this correlation between obesity and severity of distal radius fractures caused by low-energy injuries. Materials and methods: A total of 114 patients with distal radius fracture were examined in