Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at √s=7 TeV

PubMed ID: 23679709The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at s √ =7  TeV is presented. The results are based on a data set corresponding to an integrated luminosity of 5.0  fb^−1 , recorded by the CMS detector at the LHC in 2011. The measurement is performed in two independent channels through a trilepton analysis of tt ¯ Z events and a same-sign dilepton analysis of tt ¯ V (V=W or Z ) events. In the trilepton channel a direct measurement of the tt ¯ Z cross section σ tt ¯ Z =0.28 [+0.14 −0.11]  (stat) [+0.06 −0.03]  (syst)  pb is obtained. In the dilepton channel a measurement of the tt ¯ V cross section yields σtt¯V=0.43 [+0.17 −0.15]  (stat) [+0.09 −0.07]  (syst)  pb . These measurements have a significance, respectively, of 3.3 and 3.0 standard deviations from the background hypotheses and are compatible, within uncertainties, with the corresponding next-to-leading order predictions of 0.137[+0.012 −0.016] and 0.306 [+0.031 −0.053]   pb

Event shapes and azimuthal correlations in Z plus jets events in pp collisions at root √s=7TeV^{√s=7 TeV}

is produced in association with jets in proton–proton collisions. The data collected with the CMS detector at the CERN LHC at $^{√s=7 TeV}$ correspond to an integrated luminosity of 5.0 fb$^{-1}$. The analysis provides a test of predictions from perturbative QCD for a process that represents a substantial background to many physics channels. Results are presented as a function of jet multiplicity, for inclusive Z boson production and for Z bosons with transverse momenta greater than 150 GeV, and compared to predictions from Monte Carlo event generators that include leading-order multiparton matrix-element (with up to four hard partons in the final state) and next-to-leading-order simulations of Z+1-jet events. The experimental results are corrected for detector effects, and can be compared directly with other QCD model

Propofol infusion syndrome or adrenoleukodystrophy?

Following a propofol anesthetic, a 5-year-old girl with lower extremity spasticity seized and developed hypertriglyceridemia, hyperkalemia, and metabolic acidosis. A presumed diagnosis of propofol infusion syndrome (PRIS) was made, but further investigation revealed neonatal adrenoleukodystrophy. PRIS should be considered with this constellation of symptoms, but other neurometabolic disorders must always be ruled out

Is the temperature of tumescent anesthesia applied in the endovenous laser ablation important? Comparison of different temperatures for tumescent anesthesia applied during endovenous ablation of incompetent great saphenous vein with a 1470 nm diode laser

Introduction: We aimed to investigate whether the temperature of tumescent anesthesia is important, if so, to establish an opinion about the ideal temperature

Is dermatological lilac really lilac?

Background/Objective: Dermatologists use the word lilac to describe a shade of erythema; especially in lichen planus, morphea, and dermatomyositis. The aim of this study to determine whether or not there is a color really consistent with a lilac color, when they perceive it. Methods: Four illustrations were prepared for each of these three diseases. Only one illustration of each of the diseases had a color really consistent with a lilac color. Seventy-two physicians working in dermatology (16 residents, 20 teaching staffs, and 36 non-academician specialists) were included in this study. They were asked to choose the most representative illustration for each of the diseases. Results: Only a few physicians chose illustrations having a color really consistent with a lilac color. In most commonly chosen illustrations, there was a rose or even a salmon color in the area perceived as having a lilac color by the physicians. Conclusion: Our results might be explained by the color contrast phenomenon. In other words, a human may discern a verging towards lilac from an object not colored such by comparing its color to that of its background, so he may perceive this color. © 201

The effect of passive exposure to tobacco smoke on perioperative respiratory complications and the duration of recovery

Abstract Background: The incidence of perioperative respiratory complications and postoperative care unit recovery time investigated in patients with passive tobacco smoke exposure according to the degree of exposure. Methods: Total 270 patients ranging in age from 18 to 60 years with the ASA physical status I or II exposed and not exposed to passive tobacco smoke received general anesthesia for various elective surgical operations evaluated for the study. Patients divided into two groups as exposed and non-exposed to passive tobacco smoke, those exposed to passive smoke are also divided into two groups according to the degree of exposure. Patients taken to the postoperative care unit (PACU) at the end of the operation and monitorized until Modified Aldrete's Scores became 9 and more. Respiratory complications evaluated and recorded in intraoperative and postoperative period. Results: A total of 251 patients were enrolled; 63 (25.1%) patients had airway complications, 11 (4.4%) had complications intraoperatively and 52 (20.7%) patients had complications postoperatively. There has been found significant relation with passive tobacco smoke exposure and high incidences of perioperative and postoperative respiratory complications. The risk of cough, desaturation and hypersecretion complications were found to be increased depending on the degree of exposure. There was significant relation between the degree of passive smoke exposure and the duration of PACU stay. Conclusion: Passive tobacco smoke exposed general anesthesia receiving patients also regarding to the degree of exposure having high rates of perioperative respiratory complications and prolongation of PACU stays when compared with unexposed patients

Propuesta de implementación de una herramienta de inteligencia de negocios para un operador de servicios aeroportuarios.

La propuesta desarrolla la implementación de una herramienta de inteligencia de negocio para un operador de servicios aeroportuarios. Para tal efecto se divide el contenido del trabajo en cuatro capítulos: Fundamentación teórica, incluye un marco teórico, sobre el sector de servicios aeroportuarios, inteligencia de negocios y tableros de control. Análisis y diagnostico del proceso actual, se describe información de la situación actual y problemática de la empresa. Evaluación de alternativas, se describe la solución de negocio en base al análisis de la investigación realizada, se identifican los beneficios y la arquitectura de la solución. Conclusiones y Recomendaciones, se describe las conclusiones y recomendaciones de la solución propuesta. El objetivo principal de esta tesis es desarrollar la propuesta de implementación de una herramienta de inteligencia de negocios que permita integrar la información de las operaciones del negocio de aeropuertos para la toma decisiones estratégicas sobre temas financieros, operativos, comerciales y contables.Tesi

A patient presenting with concha bullosa in another concha bullosa: a case report

Abstract Introduction Anatomic variations of the paranasal sinuses are very common. The paranasal sinus anatomy should be carefully examined prior to performing endoscopic sinus surgery in terms of both existent pathologies and anatomic variations. The anatomy of the paranasal sinuses and its variations have gained importance, along with advances in coronal paranasal sinus computed tomography and extensive use of endoscopic sinus surgery. Case presentation A 53-year-old Caucasian woman was admitted to our clinic with complaints of nasal breathing difficulties and headache persisting for a long time. Another concha bullosa was detected in the middle concha bullosa on preoperative paranasal computed tomography examination. It is known that the paranasal sinuses have a number of anatomical variations. Conclusion Herein we report a rare case, along with a review of the literature, to emphasize that a concha bullosa inside another concha bullosa should not be ignored.</p