Cuidado y curación tradicional de los animales de trabajo en la primera obra de veterinaria mexicana (1575-1579)

El libro Albeitería, escrito por el mexicano Juan Suárez de Peralta en tre 1575 y 1579, es el primero en Ciencias Veterinarias escrito en América, aunque debido a su rareza ha sido prácticamente desaprovechado por los estudiosos del cuidado animal. El ser originario de la Nueva España le proporcionó al autor, según él mismo declara, la oportunidad de acceder a las fórmulas médicas a base de plantas, tanto exóticas como nativas, conforme a la medicina indígena; aprovechar al máximo el sa ber español y árabe de un "gran albéitar gitano", en el uso de plantas y emplastos, así como el "medir el pulso" y el "curar por la orina" como parte del procedimiento de atención medica al ganado equino, además de múltiples procedimientos de medicina veterinaria tradicional hispanoárabe. En dicho texto están las bases de los cuidados utilizados por los campesinos mexicanos en la atención y curación de sus animales de trabajo, ya que éstas son herederas directas de las prácticas curativas llegadas de la península Ibérica. La identificación de los cuidados y remedios tradicionales, así como también de la farmacopea utilizada por Suárez de Peralta en los animales de trabajo es el objetivo del presente escrito

Remote Sub-Wavelength Addressing of Quantum Emitters with Chirped Pulses

We propose to use chirped pulses propagating near a bandgap to remotely address quantum emitters with sub-wavelength resolution. We introduce a particular family of chirped pulses that dynamically self-focus during their evolution in a medium with a quadratic dispersion relation. We analytically describe how the focusing distance and width of the pulse can be tuned through its initial parameters. We show that the interaction of such pulses with a quantum emitter is highly sensitive to its position due to effective Landau-Zener processes induced by the pulse chirping. Our results propose pulse engineering as a powerful control and probing tool in the field of quantum emitters coupled to structured reservoirs.Comment: 5+3 pages, 3+2 figure

Quantum Electrodynamics with a Nonmoving Dielectric Sphere: Quantizing Mie Scattering

We quantize the electromagnetic field in the presence of a nonmoving dielectric sphere in vacuum. The sphere is assumed to be lossless, dispersionless, isotropic, and homogeneous. The quantization is performed using normalized eigenmodes as well as plane-wave modes. We specify two useful alternative bases of normalized eigenmodes: spherical eigenmodes and scattering eigenmodes. A canonical transformation between plane-wave modes and normalized eigenmodes is derived. This formalism is employed to study the scattering of a single photon, coherent squeezed light, and two-photon states off a dielectric sphere. In the latter case we calculate the second-order correlation function of the scattered field, thereby unveiling the angular distribution of the Hong-Ou-Mandel interference for a dielectric sphere acting as a three-dimensional beam splitter. Our results are analytically derived for an arbitrary size of the dielectric sphere with a particular emphasis on the small-particle limit. This work sets the theoretical foundation for describing the quantum interaction between light and the motional, rotational and vibrational degrees of freedom of a dielectric sphere.Comment: 19 pages, 3 figure

Quantum Theory of Light Interaction with a Dielectric Sphere: Towards 3D Ground-State Cooling

We theoretically analyze the motional quantum dynamics of a levitated dielectric sphere interacting with the quantum electromagnetic field beyond the point-dipole approximation. To this end, we derive a Hamiltonian describing the fundamental coupling between photons and center-of-mass phonons, including Stokes and anti-Stokes processes, and the coupling rates for a dielectric sphere of arbitrary refractive index and size. We then derive the laser recoil heating rates and the information radiation patterns (the angular distribution of the scattered light that carries information about the center-of-mass motion) and show how to evaluate them efficiently in the presence of a focused laser beam, either in a running or a standing-wave configuration. This information is crucial to implement active feedback cooling of optically levitated dielectric spheres beyond the point-dipole approximation. Our results predict several experimentally feasible configurations and parameter regimes where optical detection and active feedback can simultaneously cool to the ground state the three-dimensional center-of-mass motion of dielectric spheres in the micrometer regime. Scaling up the mass of the dielectric particles that can be cooled to the center-of-mass ground state is not only relevant for testing quantum mechanics at large scales but also for current experimental efforts that search for new physics (e.g. dark matter) using optically levitated sensors.Comment: 16 + 12 pages, 8 + 4 figures, 1 tabl

Time Series Heterogeneous Co-execution on CPU+GPU

Time series motif (similarities) and discords discovery is one of the most important and challenging problems nowadays for time series analytics. We use an algorithm called “scrimp” that excels in collecting the relevant information of time series by reducing the computational complexity of the searching. Starting from the sequential algorithm we develop parallel alternatives based on a variety of scheduling policies that target different computing devices in a system that integrates a CPU multicore and an embedded GPU. These policies are named Dynamic -using Intel TBB- and Static -using C++11 threads- when targeting the CPU, and they are compared to a heterogeneous adaptive approach named LogFit -using Intel TBB and OpenCL- when targeting the co-execution on the CPU and GPU.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Formación del patrimonio gastronómico del Valle de Toluca, México

Se describe la formación de la cocina patrimonial de la región de Toluca como primer paso para su investigación culinaria. Se utilizó información etnohistórica de primera mano (cronistas) y la consulta de libros, recetarios, tesis y otros documentos, relacionándolos con las características ambientales y culturales del Valle de Toluca. Se identificaron las especies animales y vegetales, así como las prácticas agrícolas-culinarias que trajeron consigo los españoles y su fusión con sus similares locales, lo que produjo el mestizaje gastronómico en el Valle de Toluca expresado en sus platillos patrimoniales: barbacoas, embutidos, moles, tamales, dulces y bebidas tradicionales.Se describe la formación de la cocina patrimonial de la región de Toluca como primer paso para su investigación culinaria. Se utilizó información etnohistórica de primera mano (cronistas) y la consulta de libros, recetarios, tesis y otros documentos, relacionándolos con las características ambientales y culturales del Valle de Toluca. Se identiÀcaron las especies animales y vegetales, así como las prácticas agrícolas-culinarias que trajeron consigo los españoles y su fusión con sus similares locales, lo que produjo el mestizaje gastronómico en el Valle de Toluca expresado en sus platillos patrimoniales: barbacoas, embutidos, moles, tamales, dulces y bebidas tradicionales

A novel and chemoselective process of N-alkylation of aromatic nitrogen compounds using quaternary ammonium salts as starting material

Artículo Internacional Open AccesThe process of N-alkylation of several pyrroles, indoles, and derivative heterocycles is herein described, using quaternary ammonium salts as the source of an alkylating agent. These reactions were carried out on several heterocyclic rings with triethylbenzylammonium chloride or tetradecyltrimethyl ammonium bromide and an NaOH solution at 50%, leading to a chemoselective N-alkylated product and an average yield of 73%. This is an alternative process to the traditional benzylation and methylation of N-heterocycles with direct handling of alkyl halides.CONACYT, Secretaría de Investigación y Estudios Avanzados de la UAE

Optical Analysis of a Hexagonal 42kWe High-flux Solar Simulator

AbstractA 42-kWe high-flux solar simulator with hexagonal reflector symmetry has been designed, built and optically characterized at IMDEA Energy Institute, Spain. This facility makes possible the lab-scale generation of a quasi-uniform high radiation flux density and high stagnation temperatures and it will be used as a platform for analyzing processes under concentrating solar energy conditions; for instance, central receivers in concentrating solar power plants and solar fuel production process in thermochemical reactors. The high-flux solar simulator consists of seven reflector-lamp pairs arranged in the center and vertices of a regular hexagon. The 6-kWe Xe short arc lamps are allocated in the primary focus of the corresponding truncated ellipsoidal reflector. This hexagonal symmetry provides compactness and quasi-uniform spatial distribution of the radiation at the system common focal plane.This work presents the experimental characterization of the solar simulator optical performance. Preliminary measurements indicate an average flux density at the focal plane of 3.5 MW/m2 that means 3,500 suns (1 sun = 1kW/m2) and stagnation temperature of approximately 2,800K