Geoffrey Parker, El siglo maldito. Clima, guerras y catástrofes en el siglo XVII, traducción de Victoria Gordo del Rey y Jesús Cuéllar, Planeta, Barcelona, 2013, 1585 pp. (edición original: Global Crisis: War, Climate Change and Catastrophe in the...

«Es el clima, estúpido.» Así, con esa aparentemente desabrida contundencia, parafraseando una frase referida en principio a la economía y, como tal, puesta en circulación por el estratega electoral James Carville durante la campaña de las presidenciales norteamericanas que dieron el triunfo al tándem Clinton-Gore en 1992, titula Geoffrey Parker el epílogo de su reciente libro dedicado a la llamada Crisis General del siglo XVI

Seeing The Solar Corona in Three Dimensions

The large availability and rich spectral coverage of today’s observational data of the solar corona, and the high spatial and temporal resolution provided by many instruments, has enabled the evolution of three-dimensional (3D) physical models to a great level of detail. However, the 3D information provided by the data is rather limited as every instrument observes from a single angle of vision, or two at the most in the case of the STEREO mission. Two powerful available observational techniques to infer detailed 3D information of the solar corona from empirical data are stereoscopy and tomography. In particular, the technique known as differential emission measure tomography (DEMT) allows determination of the 3D distribution of the coronal electron density and temperature in the inner corona. This paper summarizes the main technical aspects of DEMT, reviews all published work based on it, and comments on its future development and applications.Fil: Vasquez, Alberto Marcos. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentin

Diet of Barn Owl (Tyto alba) in two localities of Northewestern Iberian Peninsula

[Resumen] Se estudió la dieta de la lechuza común (Tyto alba) en dos localidades del Noroeste Ibérico (A Coruña y El Bierzo), basándose en el análisis de egagrópilas, que han aportado 1015 presas. Los resultados muestran que la base de la dieta en estas localidades está constituida por los micromamíferos (roedores e insectívoros, por orden de importancia). Las especies más depredadas son la musaraña gris (Crocidura russula) en El Bierzo, y el ratón de campo (Apodemus sylvaticus) en A Coruña, siendo la segunda presa más importante en ambos casos el topillo lusitánico (Microtus lusitanicus). También se ha observado la depredación sobre aves en El Bierzo y sobre insectos en A Coruña. Se han comparado los datos de ambas localidades buscando si existen diferencias en la dieta de la lechuza en función de la zona que ocupa, con ambientes muy dispares (Atlántico y Mediterráneo respectivamente) observándose diferencias significativas en la composición de la dieta de la lechuza entre ambas localidades, y que esta variación parece estar determinada por las especies más abundantes de micromamíferos en el hábitat de caza que explota cada ave.[Resumo] Estudouse a dieta da curuxa común (Tyto alba) en dúas localidades do Noroeste Ibérico (A Coruña e El Bierzo), baseándose na análise de egagrópilas, que achegaron 1015 presas. Os resultados mostran que a base da dieta nestas localidades está constituída polos micromamíferos (roedores e insectívoros, por orde de importancia). As especies máis depredadas son a musaraña gris (Crocidura russula) no Bierzo, e o rato de campo (Apodemus sylvaticus) na Coruña, sendo a segunda presa máis importante en ambos os dous casos o topillo lusitánico (Microtus lusitanicus). Tamén se observou a depredación sobre aves no Bierzo e sobre insectos na Coruña. Comparáronse os datos de ambas as dúas localidades buscando se existen diferenzas na dieta da curuxa en función da zona que ocupa, con ambientes moi dispares (Atlántico e Mediterráneo respectivamente) observándose diferenzas significativas na composición da dieta da curuxa entre ambas as dúas localidades, e que esta variación parece estar determinada polas especies máis abundantes de micromamíferos no hábitat de caza que explota cada ave.[Abstracts] The diet of Barn Owl (Tyto alba) in two localities of the Northwestern Iberian Peninsula (A Coruña and El Bierzo) was studied basing on the analysis of pellets, which have provided 1015 preys. Results show that the diet basis in these localities is constituted by micromammals (rodents and insectivores, in order of importance). The most predated species are the greater white-toothed shrew (Crocidura russula) in El Bierzo and the wood mouse (Apodemus sylvaticus) in A Coruña, being the lusitanian pine vole (Microtus lusitanicus) the second most important prey in both cases. Predation on birds in El Bierzo and insects in A Coruña has also been observed. The data from both localities has been compared in order to search for differences in the barn owl´s diet depending on the occupied area, with very disparate environments (Atlantic and Mediterranean, respectively). Significant differences in the barn owl´s diet composition between the two localities have been observed, and this variation seems to be determined by the most abundant species of micromammals in the hunting habitat that each bird exploits.Traballo fin de grao (UDC.CIE). Bioloxía. Curso 2014/201

Measurement of Sugar Cane Chain in Brazil

Despite the historical importance of the sugarcane business in Brazil, which is as old in the country as its colonization, it has never been "photographed in widescreen". This research on the mapping and quantification of business generated in the sugarcane chain in 2008 for the first time gives the scale of the entire sugarcane productive chain in Brazil. The sector now shows the numbers that indicate the industry's role in building the country's GDP, as well as in job creation, tax generation, and the distribution (capillary) of economic activities. By applying the method Strategic Management of Agro-Systems (GESIS), developed by the first author, Professor Marcos Fava Neves, coordinator of the Marketing & Strategic Projects and Research Center, USP (MARKESTRAT), it was found that the sugarcane sector GDP is around $28.1 billion USD, equivalent to almost 2% of the Brazilian GDP or almost all of the income generated in a year in a country like Uruguay. The majority of the industry's inputs are local, explaining its favorable trade balance situation. A series of new products has become increasingly more important and a major transformation is going on in this sector that has one of the oldest and, at the same time, most modern plants with regard to clean energy on the planet.chain mapping, chain quantification, agro-industry system, sugar cane sector, ethanol, sugar, Crop Production/Industries, Industrial Organization,

Reproducao em cativeiro do camarao rosa P. Paulensis (Perez Farfante, 1967) : estudo comparativo de diferentes...

Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina. Curso de Agronomia

Curvature-driven coarsening in the two dimensional Potts model

We study the geometric properties of polymixtures after a sudden quench in temperature. We mimic these systems with the $q$-states Potts model on a square lattice with and without weak quenched disorder, and their evolution with Monte Carlo simulations with non-conserved order parameter. We analyze the distribution of hull enclosed areas for different initial conditions and compare our results with recent exact and numerical findings for $q=2$ (Ising) case. Our results demonstrate the memory of the presence or absence of long-range correlations in the initial state during the coarsening regime and exhibit super-universality properties.Comment: 12 pages, 16 figure