Comparison of ultrasound-guided versus blind interventions for supraspinatus tendinopathy : A cadaveric study

Background. The treatment of supraspinatus tendinopathy remains a challenge for the health professional. This study aims to analyze the precision of needle interventions in lesions of the supraspinatus tendon when conducting them in an ultrasound-guided or non-ultrasound guided (blind) manner. Methods. Study on cadaver with infiltrations performed under ultrasound control or blind after randomization of the parts and participants. Twenty fresh cadaveric shoulders and 30 practitioners with experience using musculoskeletal ultrasound and doing needle interventions. Each practitioner performed 4 ultrasound-guided and 4 unguided punctures. This provided 240 punctures that were analyzed in 3 different anatomical cuts, thus providing a database of 720 measurements for statistical analysis. Results. Statistically significant differences were observed (p<0.0001) in the distance to the bullet point between the ultrasound-guided and the non-guided infiltrations. It was estimated that the unguided punctures were performed on average 10mm farther from the bullet point than the 'ultrasound-guided' punctures. The ultrasound-guided punctures demonstrated 95% precision while the unguided punctures had a precision rate of 12.5% (p <0.0001). Conclusion. Interventions of the supraspinatus tendon should be performed in an ultrasound-guided manner to facilitate administration of the treatment in the proper area

Actas del Quinto Congreso Internacional sobre Minería y Metalurgia Históricas en el Suroeste Europeo (León - 2008) : libro en homenaje a Claude Domergue

Promover el estudio del patrimonio minero es uno de los objetivos estatutarios de la Sociedad Española para la Defensa del Patrimonio Geológico y Minero (SEDPGYM). Por ello, la Sociedad siempre ha apoyado los encuentros entre los especialistas como el que se presenta en este libro de actas. El estudio del patrimonio minero es una actividad compleja por la propia naturaleza del patrimonio involucrado, de manera que los puntos de vista desde los que puede abordarse son muchos y diversos. Consciente de ello, SEDPGYM organiza, con la colaboración de otras instituciones, los denominados simposios internacionales sobre Minería y Metalurgia Históricas en el Suroeste Europeo en los que tienen cabida los estudios e investigaciones relativos a la minería y metalurgia desde la Prehistoria hasta nuestros días, con especial atención a aquellos que son anteriores a la época moderna. El presente libro de actas recoge los trabajos de uno de estos congresos, concretamente el quinto, celebrado en León entre los días 19 y 21 de junio de 2008, y coorganizado con GEOMIN/APPI y la Universidad de León. Este congreso tuvo una significación especial porque, con él, SEDPGYM rindió un merecido homenaje a un hombre que es una autoridad indiscutible en el campo de la minería antigua, hasta el punto de que sus múltiples trabajos han creado escuela entre los arqueólogos actuales. Se trata de Claude Domergue, profesor emérito en la Universidad Toulouse-Le Mirail (Francia). Claude Domergue ha sido pionero en realizar el estudio sistemático de los yacimientos arqueológico-mineros ibéricos (ya que también ha dedicado su atención a Portugal), recorriendo una ingente cantidad de ellos y publicando varias e importantes obras de síntesis

L'estudi del museu de geologia d'Oruro (Bolívia)

Bolívia compta amb una de les majors riqueses mineralògiques del món (Hyršl i Petrov, 2009). Una bona representació d’elles es troba al Museo Mineralógico de la Facultad de Minas de la UTO en Oruro (Llanque, 2006; Neumeier, 2009; Petrov, 2009). La trajectòria de més de cent anys de la col∙lecció però, havia provocat que aquesta no presentavà la seva millor situació. És per això que es decideix dur a terme una catalogació, inventariat i reordenació de les mostres mineralògiques de què disposa. Per fer-ho s'utilitzen diverses tècniques d'identificació mineral, que van des de les clàssiques de visu fins a mètodes més sofisticats com l'estudi petrogràfic amb làmina prima o amb Difracció de RX. Es procedeix també a la renovació de les fitxes identificatòries i al fotografiat de les més de 3500 mostres. Amb aquesta finalitat se signa el projecte de col∙laboració entre la Universitat Politècnica de Catalunya (U.P.C.) i la Universidad Técnica de Oruro (U.T.O.), en què es busca una sol∙lució als problemes mencionats durant l’any 2010.Peer Reviewe

Caracterización de los lodos de la depuradora de Sadat (Minufiya, Egipto) para la obtención de un material vitrocerámico

Muchos problemas ambientales actuales están relacionados con los desechos industriales y municipales (lodos de depuradora, etc.), debidos al gran volumen que se genera, así como a los elementos peligrosos que incluyen en ellos (metales pesados). Su almacenamiento, tratamiento y transporte conlleva también costos económicos. En Egipto en el año 2002 se generaron de 12 a 15 kg/año por habitante de materia sólida procedente de los lodos de depuradora. En la actualidad, el destino principal de estos lodos es su vertido en el desierto

Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC

The uncertainty on the calorimeter energy response to jets of particles is derived for the ATLAS experiment at the Large Hadron Collider (LHC). First, the calorimeter response to single isolated charged hadrons is measured and compared to the Monte Carlo simulation using proton-proton collisions at centre-of-mass energies of sqrt(s) = 900 GeV and 7 TeV collected during 2009 and 2010. Then, using the decay of K_s and Lambda particles, the calorimeter response to specific types of particles (positively and negatively charged pions, protons, and anti-protons) is measured and compared to the Monte Carlo predictions. Finally, the jet energy scale uncertainty is determined by propagating the response uncertainty for single charged and neutral particles to jets. The response uncertainty is 2-5% for central isolated hadrons and 1-3% for the final calorimeter jet energy scale.Comment: 24 pages plus author list (36 pages total), 23 figures, 1 table, submitted to European Physical Journal

Geological context and origin of the mineralization of the historic and prehistoric iron mines in the Gavà area, Catalonia (NE Iberian Peninsula)

Mining for iron resources in the Gavà area of Catalonia occurred intermittently during the Iberian and Roman epochs, the Middle Ages, and continuing until the industrial era, as evidenced by historical and archaeological documents. Iron mining in this area could have occurred even earlier, during the Neolithic period. Iron ores were formed in two stages: (1) a regional hydrothermal alteration associated with Hercynian thrusts that produced the ankeritization of limestones within the Paleozoic series, and (2) the karstic replacement of these iron-rich carbonates during the Pliocene and Quaternary by means of supergenic fluids that produced ochres with goethite and hematite. The style of mineralization largely depends on the characteristics of the replaced protolith, and three styles of mineralization can be defined: (1)The supergenic replacement of ankeritized massive Pridolian limestones only produced local replacements that were restricted to structural or stratigraphic discontinuities, therefore, the mineralization has reduced dimensions and occurs as irregular veinlets or pipes; (2) The replacement of interbedded ankeritized limestones and pyrite-bearing shales (Lockovian) produced massive ores in pod-shaped bodies rich in silica impurities derived from the altered shales; and (3) The replacement of carbonates overthrust by pyrite- and phosphate-rich shales favored the formation of massive stratabound deposits, which are the largest and highest grade deposits in the study area, and may be locally enriched in minerals of the alunite supergroup and Ca- and Fe-rich phosphates. Outcrops of all of these styles of mineralization were mined by the Iberian cultures, during the roman period and in the Middle Ages, taking advantage of the relatively high metallurgical quality of the ores.Therefore, the exploitation during these epochs was artisanal by means of trenches or small pits. In contrast, during the industrial era only the massive stratabound deposits were exploited in open pits and underground galleries

Standalone vertex finding in the ATLAS muon spectrometer

A dedicated reconstruction algorithm to find decay vertices in the ATLAS muon spectrometer is presented. The algorithm searches the region just upstream of or inside the muon spectrometer volume for multi-particle vertices that originate from the decay of particles with long decay paths. The performance of the algorithm is evaluated using both a sample of simulated Higgs boson events, in which the Higgs boson decays to long-lived neutral particles that in turn decay to bbar b final states, and pp collision data at √s = 7 TeV collected with the ATLAS detector at the LHC during 2011

Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC

Measurements are presented of production properties and couplings of the recently discovered Higgs boson using the decays into boson pairs, H →γ γ, H → Z Z∗ →4l and H →W W∗ →lνlν. The results are based on the complete pp collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at centre-of-mass energies of √s = 7 TeV and √s = 8 TeV, corresponding to an integrated luminosity of about 25 fb−1. Evidence for Higgs boson production through vector-boson fusion is reported. Results of combined fits probing Higgs boson couplings to fermions and bosons, as well as anomalous contributions to loop-induced production and decay modes, are presented. All measurements are consistent with expectations for the Standard Model Higgs boson

Measurement of the top quark pair cross section with ATLAS in pp collisions at √s=7 TeV using final states with an electron or a muon and a hadronically decaying τ lepton

A measurement of the cross section of top quark pair production in proton-proton collisions recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 7 TeV is reported. The data sample used corresponds to an integrated luminosity of 2.05 fb -1. Events with an isolated electron or muon and a τ lepton decaying hadronically are used. In addition, a large missing transverse momentum and two or more energetic jets are required. At least one of the jets must be identified as originating from a b quark. The measured cross section, σtt-=186±13(stat.)±20(syst.)±7(lumi.) pb, is in good agreement with the Standard Model prediction

Measurement of the top quark-pair production cross section with ATLAS in pp collisions at \sqrt{s}=7\TeV

A measurement of the production cross-section for top quark pairs(\ttbar) in $pp$ collisions at \sqrt{s}=7 \TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron $e$ or muon $\mu$) with large missing transverse energy and at least four jets, and dilepton ($ee$, $\mu\mu$ or $e\mu$) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb-1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-\ttbar Standard Model processes are estimated using data-driven methods and determined to be $12.2 \pm 3.9$ events and $2.5 \pm 0.6$ events, respectively. The kinematic properties of the selected events are consistent with SM \ttbar production. The inclusive top quark pair production cross-section is measured to be \sigmattbar=145 \pm 31 ^{+42}_{-27} pb where the first uncertainty is statistical and the second systematic. The measurement agrees with perturbative QCD calculations.Comment: 30 pages plus author list (50 pages total), 9 figures, 11 tables, CERN-PH number and final journal adde