Search results for "PESA"
showing 10 items of 40 documents
Lipidomic profiling identifies signatures of metabolic risk
2020
Background: Metabolic syndrome (MetS), the clustering of metabolic risk factors, is associated with cardiovascular disease risk. We sought to determine if dysregulation of the lipidome may contribute to metabolic risk factors. Methods: We measured 154 circulating lipid species in 658 participants from the Framingham Heart Study (FHS) using liquid chromatography-tandem mass spectrometry and tested for associations with obesity, dysglycemia, and dyslipidemia. Independent external validation was sought in three independent cohorts. Follow-up data from the FHS were used to test for lipid metabolites associated with longitudinal changes in metabolic risk factors. Results: Thirty-nine lipids were…
Misurare e pesare nella Grecia antica. Teorie storia ideologie
1998
I Greci si limitarono ad un uso pratico dei pesi e delle misure o svilupparono anche una elaborazione teorica sul pesare e misurare? A partire da questo interrogativo, vengono analizzate nel volume fonti di vario genere (letterarie, scientifiche, giuridiche, epigrafiche), collocabili in un arco di tempo che va da Omero alla tarda antichità. Attraverso una lettura filologica dei testi, si ricostruisce così il panorama di un’ampia riflessione dei Greci sul ruolo che le misure svolgono all’interno della società e sulla loro importanza nella politica, nella scienza, nell’etica: dall’invenzione dei pesi e delle misure come tappa della storia della civilizzazione umana alla loro individuazione qu…
Charged kaon femtoscopic correlations inppcollisions ats=7 TeV
2013
Correlations of two charged identical kaons (KchKch) are measured in pp collisions at root s = 7 TeV by the ALICE experiment at the Large Hadron Collider (LHC). One-dimensional (KKch)-K-ch correlation functions are constructed in three multiplicity and four transverse momentum ranges. The (KKch)-K-ch femtoscopic source parameters R and lambda are extracted. The (KKch)-K-ch correlations show a slight increase of femtoscopic radii with increasing multiplicity and a slight decrease of radii with increasing transverse momentum. These trends are similar to the ones observed for pi pi and K-s(0) K-s(0) correlations in pp and heavy-ion collisions. However at high multiplicities, there is an indica…
Search for displaced vertices arising from decays of new heavy particles in 7 TeV pp collisions at ATLAS
2012
We present the results of a search for new, heavy particles that decay at a significant distance from their production point into a final state containing charged hadrons in association with a high-momentum muon. The search is conducted in a pp-collision data sample with a center-of-mass energy of 7 TeV and an integrated luminosity of 33 pb[superscript −1] collected in 2010 by the ATLAS detector operating at the Large Hadron Collider. Production of such particles is expected in various scenarios of physics beyond the standard model. We observe no signal and place limits on the production cross-section of supersymmetric particles in an R-parity-violating scenario as a function of the neutral…
Guía multimedia de operaciones básicas en análisis químico, farmacéutico y medioambiental
2008
En el presente proyecto se ha desarrollado una guía multimedia en formato electrónico como recurso de apoyo para la enseñanza y aprendizaje de las técnicas básicas del laboratorio analítico. La guía contiene ocho apartados donde los estudiantes pueden encontrar fácilmente información sobre las características de los reactivos químicos, descripción del material de laboratorio de uso frecuente, cómo se debe manejar y limpiar dicho material, instrucciones para no cometer errores en la operación de pesada de un sólido, como preparar de forma correcta una disolución, como llevar a cabo una valoración y las distintas etapas necesarias para calibrar un instrumento de medida, desde la preparación d…
Upgrade of the ALICE Experiment Letter Of Intent
2014
ALICE (A Large Ion Collider Experiment) is studying the physics of strongly interacting matter, and in particular the properties of the Quark–Gluon Plasma (QGP), using proton–proton, proton–nucleus and nucleus–nucleus collisions at the CERN LHC (Large Hadron Collider). The ALICE Collaboration is preparing a major upgrade of the experimental apparatus, planned for installation in the second long LHC shutdown in the years 2018–2019. These plans are presented in the ALICE Upgrade Letter of Intent, submitted to the LHCC (LHC experiments Committee) in September 2012. In order to fully exploit the physics reach of the LHC in this field, high- precision measurements of the heavy-flavour production…
El equipo lítico del asentamiento prehispánico de Atacames, Ecuador
2010
Se estudian los objetos líticos, domésticos y/o ceremoniales, de un yacimiento prehispánico ecuatoriano, Atacames. Comenzó a ser desarticulado por los españoles que se dirigían hacia la conquista del Perú (en el verano de 1527 los nativos fueron atacados). De aquella población han llegado a este tiempo numerosos vestigios, excavados y estudiados por los miembros de la Misión Arqueológica en Ecuador. (A)
Ecos de la Junta democrática y de la oposición en el diario ABC (1974-75): la ruptura como pesadilla
2012
International audience; La creación de la Junta democrática como plataforma antifranquista se proponía romper con las instituciones del Régimen iniciando una lucha pacífica que debía permitir una democratización radical del estado. La ruptura con las instituciones del franquismo debía ser llevada a cabo gracias a un gobierno provisional representativo de todas las fuerzas de oposición. Las numerosas acciones y comunicaciones a los órganos de prensa internacionales de la Comisión Exterior de la Junta democrática de España, dirigida por José Vidal Beneyto, permitieron a la JDE darse a conocer a los países europeos siendo aún ilegal dentro del país. Los artículos del diario ABC de 1974-75 se h…
Matching stages of heavy-ion collision models
2010
Heavy-ion reactions and other collective dynamical processes are frequently described by different theoretical approaches for the different stages of the process, like initial equilibration stage, intermediate locally equilibrated fluid dynamical stage, and final freeze-out stage. For the last stage, the best known is the Cooper-Frye description used to generate the phase space distribution of emitted, noninteracting particles from a fluid dynamical expansion or explosion, assuming a final ideal gas distribution, or (less frequently) an out-of-equilibrium distribution. In this work we do not want to replace the Cooper-Frye description, but rather clarify the ways of using it and how to choo…