Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at root s=7TeV

A measurement of differential cross sections for the production of a pair of isolated photons in proton-proton collisions at root s = 7 TeV is presented. The data sample corresponds to an integrated luminosity of 5.0 fb(-1) collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25 GeV respectively, in the pseudorapidity range vertical bar eta vertical bar < 2.5, vertical bar eta vertical bar (sic) [1.44, 1.57] and with an angular separation Delta R > 0.45, is 17.2 +/-0.2 (stat) +/-1.9 (syst) +/- 0.4 (lumi) pb. Differential cross sections are measured as a function of the diphoton invariant mass, the diphoton transverse momentum, the azimuthal angle difference between the two photons, and the cosine of the polar angle in the Collins-Soper reference frame of the diphoton system. The results are compared to theoretical predictions at leading, next-to-leading, and next-to-next-to-leading order in quantum chromodynamics.

Measurement of the top-quark mass in all-jets t(t)over-bar events in pp collisions at root s=7 TeV

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Measurement of pseudorapidity distributions of charged particles in proton-proton collisions at root s=8 TeV by the CMS and TOTEM experiments

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Search for anomalous production of events with three or more leptons in pp collisions at root s=8 TeV

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Entre santos e demônios: a percepção do mal na teologia e hagiografias do Reino Visigodo de Toledo (séculos VI-VII)

Pós-graduação em História - FCLAS

Reino da natureza, reino dos fins, e proto-reino: um estudo de traduções conservativas

We provide conservative translations from propositional modal logic KT (the simplest normal alethic logic) into propositional modal logic KD (the simplest normal deontic logic), and from this into the propositional modal logic K (the simplest normal logic simpliciter). Following an idea discussed by Jaakko Hintikka, these conservative translations are based on the third formulation of Kantian categorical imperative, the formulation of the Kingdom of Ends.

A internet como instrumento da democracia: um estudo comparativo entre as memórias virtuais dos parlamentos do Reino Unido e do Brasil

Preserving the organizational memory of public institutions means keeping the history of a society alive, managing communication, strengthening institutional image and thus build a good reputation. Therefore, institutions such as the Brazilian Senate and the United Kingdom Parliament are investing in virtual spaces to preserve the memory. A comparative study between those tools and the ways adopted for the memory preservation by both institutions is the main objective of the present work. The methodology consisted in the elaboration of categories that concern three priorities: democracy, internet and memory.

Geoestratégia das Ilhas Falklands: conflito entre Argentina e Reino Unido

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

O ensino coletivo de cordas friccionadas produzido no SESC-Consolação, comparado com propostas de ensino coletivo realizadas no Reino Unido e nos EUA: Trajetória histórica, diferenças e similaridades pedagógicas e socioculturais

Pós-graduação em Música - IA

Estimation of transpiration of the 'Valencia' orange young plant using thermal dissipation probe method

Most studies on measures of transpiration of plants, especially woody fruit, relies on methods of heat supply in the trunk. This study aimed to calibrate the Thermal Dissipation Probe Method (TDP) to estimate the transpiration, study the effects of natural thermal gradients and determine the relation between outside diameter and area of xylem in 'Valencia' orange young plants. TDP were installed in 40 orange plants of 15 months old, planted in boxes of 500 L, in a greenhouse. It was tested the correction of the natural thermal differences (DTN) for the estimation based on two unheated probes. The area of the conductive section was related to the outside diameter of the stem by means of polynomial regression. The equation for estimation of sap flow was calibrated having as standard lysimeter measures of a representative plant. The angular coefficient of the equation for estimating sap flow was adjusted by minimizing the absolute deviation between the sap flow and daily transpiration measured by lysimeter. Based on these results, it was concluded that the method of TDP, adjusting the original calibration and correction of the DTN, was effective in transpiration assessment.

Apante, cultivo de caña de azúcar y sus repercusiones en el reino de Guatemala, siglo XVIII

[ES] La vida de las provincias de San Salvador y Sonsonate, que conformaron el actual El Salvador, en América Central, estuvo caracterizada por la dependencia de la capital y el monocultivo. Para la segunda mitad del siglo XVIII aconteció el despunte añilero (sustituyendo al cacao sonsonateco tras su declive) que tanta relevancia tuvo para la economía del reino y que repercutió de manera particular en las economías locales, «tironeando» el desarrollo de otros productos. El más sobresaliente de ellos fue la caña de azúcar, con una producción tan considerable que llegó a hacerse de una importante porción del mercado capitalino guatemalteco. El presente trabajo sostiene que esto sólo fue posible gracias al empleo del apante o regadío, ya presente en los limitados espacios tecnológicos y comerciales de aquella sociedad rural. Rompiendo los paradigmas del sistema productivo cañero, las elevadas posibilidades productivas del apante, los antecedentes de su uso y el mismo sistema productivo añilero, aseguraron el éxito de la empresa, en un ejemplo poco conocido del aporte de la tecnología indígena en las sociedades y economías del interior colonial.