61 research outputs found
Caracterização e avaliação molecular da carne de bovinos destinada ao mercado de cortes nobres: estudo com novilhas cruzadas.
Postoperative peri-axillary seroma following axillary artery cannulation for surgical treatment of acute type A aortic dissection
The arterial cannulation site for optimal tissue perfusion and cerebral protection during cardiopulmonary bypass (CPB) for surgical treatment of acute type A aortic dissection remains controversial. Right axillary artery cannulation confers significant advantages, because it provides antegrade arterial perfusion during cardiopulmonary bypass, and allows continuous antegrade cerebral perfusion during hypothermic circulatory arrest, thereby minimizing global cerebral ischemia. However, right axillary artery cannulation has been associated with serious complications, including problems with systemic perfusion during cardiopulmonary bypass, problems with postoperative patency of the artery due to stenosis, thrombosis or dissection, and brachial plexus injury. We herein present the case of a 36-year-old Caucasian man with known Marfan syndrome and acute type A aortic dissection, who had direct right axillary artery cannulation for surgery of the ascending aorta. Postoperatively, the patient developed an axillary perigraft seroma. As this complication has, not, to our knowledge, been reported before in cardiothoracic surgery, we describe this unusual complication and discuss conservative and surgical treatment options
Parent formulation at the Lagrangian level
The recently proposed first-order parent formalism at the level of equations
of motion is specialized to the case of Lagrangian systems. It is shown that
for diffeomorphism-invariant theories the parent formulation takes the form of
an AKSZ-type sigma model. The proposed formulation can be also seen as a
Lagrangian version of the BV-BRST extension of the Vasiliev unfolded approach.
We also discuss its possible interpretation as a multidimensional
generalization of the Hamiltonian BFV--BRST formalism. The general construction
is illustrated by examples of (parametrized) mechanics, relativistic particle,
Yang--Mills theory, and gravity.Comment: 26 pages, discussion of the truncation extended, typos corrected,
references adde
ATLAS pixel detector electronics and sensors
The silicon pixel tracking system for the ATLAS experiment at the Large Hadron Collider is described and the performance requirements are summarized. Detailed descriptions of the pixel detector electronics and the silicon sensors are given. The design, fabrication, assembly and performance of the pixel detector modules are presented. Data obtained from test beams as well as studies using cosmic rays are also discussed
Search for Higgs Bosons Decaying into b anti-b and Produced in Association with a Vector Boson in Proton-Antiproton Collisions at 1.8 TeV
We present a new search for production, where is a scalar
Higgs boson decaying into with branching ratio , and is a
boson decaying into , , or .
This search is then combined with previous searches for where is a
boson or a hadronically decaying . The data sample consists of
pb of collisions at TeV
accumulated by the Collider Detector at Fermilab. Observing no evidence of a
signal, we set 95% Bayesian credibility level upper limits on
. For masses of 90, 110 and 130
GeV/, the limits are 7.8, 7.2, and 6.6 pb respectively.Comment: 6 pages, 3 figures, to be submiited to PR
Measurement of dsigma/DM Forward-Backward Charge Asymmetry for High Mass Drell-Yan e+e- Pairs from p-pbar Collisions at sqrt(s)=1.8 TeV
We report on a measurement of the mass dependence of the forward-backward
charge asymmetry, A_FB, and production cross section dsigma/dM for e+e- pairs
with mass M_ee>40 GeV/c2. The data sample consists of 108 pb-1 of p-pbar
collisions at sqrt(s)=1.8 TeV taken by the Collider Detector at Fermilab during
1992-1995. The measured asymmetry and dsigma/dM are compared with the
predictions of the Standard Model and a model with an extra Z' gauge boson.Comment: 7 pages submitted to Phys. Rev. Lett. 1 figure, 2 Table
Search for light resonances decaying to boosted quark pairs and produced in association with a photon or a jet in proton–proton collisions at √s=13 TeV with the ATLAS detector
This Letter presents a search for new light resonances decaying to pairs of quarks and produced in association with a high-pT photon or jet. The dataset consists of proton–proton collisions with an integrated luminosity of 36.1 fb−1at a centre-of-mass energy of √s=13TeV recorded by the ATLAS detector at the Large Hadron Collider. Resonance candidates are identified as massive large-radius jets with substructure consistent with a particle decaying into a quark pair. The mass spectrum of the candidates is examined for local excesses above background. No evidence of a new resonance is observed in the data, which are used to exclude the production of a lepto-phobic axial-vector Z boson
A pragmatic approach to infants with Robin sequence: a retrospective cohort study and presence of a treatment algorithm
Il ruolo dell’antropizzazione nello sviluppo di fenomeni d’erosione accelerata:l’esempio dell’isola di Madeira (Portogallo)
Il ruolo dell’antropizzazione nello sviluppo di fenomeni d’erosione accelerata:l’esempio dell’isola di Madeira (Portogallo)
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