Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 2002
BABAR, the detector for the SLAC PEP-II asymmetric e + e − B Factory operating at the Υ (4S) reso... more BABAR, the detector for the SLAC PEP-II asymmetric e + e − B Factory operating at the Υ (4S) resonance, was designed to allow comprehensive studies of CP -violation in B-meson decays. Charged particle tracks are measured in a multi-layer silicon vertex tracker surrounded by a cylindrical wire drift chamber. Electromagentic showers from electrons and photons are detected in an array of CsI crystals located just inside the solenoidal coil of a superconducting magnet. Muons and neutral hadrons are identified by arrays of resistive plate chambers inserted into gaps in the steel flux return of the magnet. Charged hadrons are identified by dE/dx measurements in the tracking detectors and in a ring-imaging Cherenkov detector surrounding the drift chamber. The trigger, data acquisition and data-monitoring systems, VME-and network-based, are controlled by custom-designed online software. Details of the layout and performance of the detector components and their associated electronics and software are presented.
NICS (the Near Infrared Camera Spectrometer) is a cooled near-infrared camera-spectrometer that h... more NICS (the Near Infrared Camera Spectrometer) is a cooled near-infrared camera-spectrometer that has been developed in the late 90's at the INAF-Arcetri Astrophysical Observatory for the Ø3.5 m "Telescopio Nazionale Galileo" (TNG) at the La Palma Observatory. The instrument has been operating for regular scientific observations since the beginning of 2001. During the 2001-2007 period it has been used in about 410 nights yielding data which contributed to the production of 60 refereed papers which collected a total of more than 800 citations. At the age of 8 years, NICS is still among the most efficient and versatile infrared instruments existing worldwide. To improve its observational efficiency, we have designed and we are currently developing new control software and GUI interfaces. The former has been devised to optimize the low level tasks (in particular the motors controls), the latter to simplify the communications between the observer and the instrument. We give here a short description of NICS software upgrade.
Avaliação do efeito da dipirona associada ao cetorolaco comparado ao cetorolaco em pós-operatório... more Avaliação do efeito da dipirona associada ao cetorolaco comparado ao cetorolaco em pós-operatório de colecistectomia videolaparoscópica Evaluation of ketorolac compared to ketorolac plus dipyrone in post-operative analgesia of videolaparoscopic cholecystectomy rESUMo objetivo: Comparar o efeito analgésico do cetorolaco e da associação cetorolaco mais dipirona após cirurgias de colecistectomias videolaparoscópicas. Métodos: Após a aprovação do Comitê de Ética e a obtenção do consentimento informado, 60 pacientes com idade entre 18 a 60 anos e candidatos à colecistectomia videolaparoscópica, foram submetidos ao procedimento cirúrgico sob anestesia geral balanceada com propofol, alfentanil, rocurônio e manutenção com isoflurano. Foram divididos em três grupos: placebo, recebendo 20 ml de solução salina; cetorolaco com 30 mg de cetorolaco em 20 ml de solução salina; e cetorolaco mais dipirona, recebendo 30 mg de cetorolaco e 2 g de dipirona em 20 ml de solução salina. Os fármacos foram aplicados por via venosa, no início da incisão cirúrgica. Na sala de recuperação pós-anestésica os pacientes foram avaliados, quanto ao momento da primeira queixa dolorosa pela escala visual analógica e verbal e grau de sedação, a cada hora nas primeiras seis horas. Se necessário era utilizada como medicação de resgate, morfina administrada por bomba de analgesia controlada pelo paciente. resultados: O consumo total de morfina no pós-operatório foi menor no Grupo Cetorolaco mais Dipirona (2 mg) e no Grupo cetorolaco (2 mg) comparado ao Grupo placebo (10,5 mg) com p = 0,10. No Grupo cetorolaco mais dipirona, oito pacientes não referiram dor no pós-operatório, enquanto que apenas três no Grupo cetorolaco e três no Grupo placebo não se queixaram de dor (p = 0,05, teste do χ 2 ). Conclusão: O cetorolaco tem sido amplamente utilizado no tratamento da dor aguda, especialmente a pós-operatória, principalmente em cirurgias de médio e grande porte, isoladas ou associadas aos opioides. No presente estudo, a associação de cetorolaco com dipirona se mostrou superior na analgesia após colecistectomias videolaparoscópicas quando comparada ao cetorolaco.
Avaliação do efeito da dipirona associada ao cetorolaco comparado ao cetorolaco em pós-operatório... more Avaliação do efeito da dipirona associada ao cetorolaco comparado ao cetorolaco em pós-operatório de colecistectomia videolaparoscópica aBStract Objectives: To compare the analgesic effect of ketorolac with the association of ketorolac plus dipyrone after videolaparoscpic cholecystectomy and with a placebo group. Methods: After approval by the Research Ethics Committee and after having the informed consent signed, 60 patients aged between 18 and 60 years who underwent videolaparoscopic cholecystectomy were evaluated for the post-operative analgesia provided by ketorolac compared to ketorolac plus dipyrone. The patients underwent general anesthesia (with propofol, alfentanil, rocuronium and maintenance with isoflurane). Twenty patients received 20 ml water, 20 patients received ketorolac 30 mg in 20 ml water and 20 received ketorolac 30 mg plus dipyrone 2 g in 20 ml water, during anesthetic induction. In the post-operative recovery room, the patients were evaluated to the moment of their first pain complaint with the use of a visual analogue scale and a verbal pain scale every hour in the first six hours. When necessary, morphine was administered as a rescue medication for pain relief and a PCA pump with morphine solution was turned on. results: Total morphine use was lower in the ketorolac plus dipyrone Group (2 mg) and in the ketorolac (2 mg) Group, compared to the placebo Group (10.5 mg). Of 20 cases of ketorolac plus dipyrone, eight patients did not complain of pain in the post-operative period, while only three patients did not complain in the ketorolac Group and in the placebo Group (p = 0,05). conclusion: Ketorolac is a potent analgesic agent widely used for acute pain treatment, especially after surgeries, with an analgesic potency comparable to that of opiates, the most commonly drugs used during the post-operative of medium to major surgeries. In this study, the results analyzed at this moment show that the association of ketorolac plus dipyrone seemed to be superior to post-operative analgesia compared to the use of ketorolac.
We report measurements of branching fractions and charge asymmetries of exclusive decays of neutr... more We report measurements of branching fractions and charge asymmetries of exclusive decays of neutral and charged B mesons into two-body final states containing a charmonium state and a light strange meson. The charmonium mesons considered are J/Psi, Psi(2S) and Chi_c1, and the light meson is either K or K*. We use a sample of about 124 million BBbar events collected with the BABAR detector at the PEP-II storage ring at the Stanford Linear Accelerator Center.
The Balanced Scorecard (BSC) is a validated tool to monitor enterprise performances against speci... more The Balanced Scorecard (BSC) is a validated tool to monitor enterprise performances against specific objectives. Through the choice and the evaluation of strategic Key Performance Indicators (KPIs), it provides a measure of the past company's outcome and allows planning future managerial strategies. The Fresenius Medical Care (FME) BSC makes use of 30 KPIs for a continuous quality improvement strategy within its dialysis clinics. Each KPI is monthly associated to a score that summarizes the clinic efficiency for that month. Standard statistical methods are currently used to analyze the BSC data and to give a comprehensive view of the corporate improvements to the top management. We herein propose the Self-Organizing Maps (SOMs) as an innovative approach to extrapolate information from the FME BSC data and to present it in an easy-readable informative form. A SOM is a computational technique that allows projecting high-dimensional datasets to a two-dimensional space (map), thus providing a compressed representation. The SOM unsupervised (self-organizing) training procedure results in a map that preserves similarity relations existing in the original dataset; in this way, the information contained in the high-dimensional space can be more easily visualized and understood. The present work demonstrates the effectiveness of the SOM approach in extracting useful information from the 30-dimensional BSC dataset: indeed, SOMs enabled both to highlight expected relationships between the KPIs and to uncover results not predictable with traditional analyses. Hence we suggest SOMs as a reliable complementary approach to the standard methods for BSC interpretation.
We present a measurement of the branching fraction and photon energy spectrum for the decay B -->... more We present a measurement of the branching fraction and photon energy spectrum for the decay B --> X_s gamma using data from the BaBar experiment. The data sample corresponds to an integrated luminosity of 210 fb^{-1}, from which approximately 680 000 BB events are tagged by a fully reconstructed hadronic decay of one of the B mesons. In the decay of the second B meson, an isolated high--energy photon is identified. We measure BR(B --> X_s gamma) = (3.66 +- 0.85_{stat} +- 0.60_{syst}) x 10^{-4} for photon energies E_gamma above 1.9 GeV in the B rest frame. From the measured spectrum we calculate the first and second moments for different minimum photon energies, which are used to extract the heavy-quark parameters m_b and mu_{pi}^2. In addition, measurements of the direct CP asymmetry and isospin asymmetry are presented.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 2002
BABAR, the detector for the SLAC PEP-II asymmetric e + e − B Factory operating at the Υ (4S) reso... more BABAR, the detector for the SLAC PEP-II asymmetric e + e − B Factory operating at the Υ (4S) resonance, was designed to allow comprehensive studies of CP -violation in B-meson decays. Charged particle tracks are measured in a multi-layer silicon vertex tracker surrounded by a cylindrical wire drift chamber. Electromagentic showers from electrons and photons are detected in an array of CsI crystals located just inside the solenoidal coil of a superconducting magnet. Muons and neutral hadrons are identified by arrays of resistive plate chambers inserted into gaps in the steel flux return of the magnet. Charged hadrons are identified by dE/dx measurements in the tracking detectors and in a ring-imaging Cherenkov detector surrounding the drift chamber. The trigger, data acquisition and data-monitoring systems, VME-and network-based, are controlled by custom-designed online software. Details of the layout and performance of the detector components and their associated electronics and software are presented.
NICS (the Near Infrared Camera Spectrometer) is a cooled near-infrared camera-spectrometer that h... more NICS (the Near Infrared Camera Spectrometer) is a cooled near-infrared camera-spectrometer that has been developed in the late 90's at the INAF-Arcetri Astrophysical Observatory for the Ø3.5 m "Telescopio Nazionale Galileo" (TNG) at the La Palma Observatory. The instrument has been operating for regular scientific observations since the beginning of 2001. During the 2001-2007 period it has been used in about 410 nights yielding data which contributed to the production of 60 refereed papers which collected a total of more than 800 citations. At the age of 8 years, NICS is still among the most efficient and versatile infrared instruments existing worldwide. To improve its observational efficiency, we have designed and we are currently developing new control software and GUI interfaces. The former has been devised to optimize the low level tasks (in particular the motors controls), the latter to simplify the communications between the observer and the instrument. We give here a short description of NICS software upgrade.
Avaliação do efeito da dipirona associada ao cetorolaco comparado ao cetorolaco em pós-operatório... more Avaliação do efeito da dipirona associada ao cetorolaco comparado ao cetorolaco em pós-operatório de colecistectomia videolaparoscópica Evaluation of ketorolac compared to ketorolac plus dipyrone in post-operative analgesia of videolaparoscopic cholecystectomy rESUMo objetivo: Comparar o efeito analgésico do cetorolaco e da associação cetorolaco mais dipirona após cirurgias de colecistectomias videolaparoscópicas. Métodos: Após a aprovação do Comitê de Ética e a obtenção do consentimento informado, 60 pacientes com idade entre 18 a 60 anos e candidatos à colecistectomia videolaparoscópica, foram submetidos ao procedimento cirúrgico sob anestesia geral balanceada com propofol, alfentanil, rocurônio e manutenção com isoflurano. Foram divididos em três grupos: placebo, recebendo 20 ml de solução salina; cetorolaco com 30 mg de cetorolaco em 20 ml de solução salina; e cetorolaco mais dipirona, recebendo 30 mg de cetorolaco e 2 g de dipirona em 20 ml de solução salina. Os fármacos foram aplicados por via venosa, no início da incisão cirúrgica. Na sala de recuperação pós-anestésica os pacientes foram avaliados, quanto ao momento da primeira queixa dolorosa pela escala visual analógica e verbal e grau de sedação, a cada hora nas primeiras seis horas. Se necessário era utilizada como medicação de resgate, morfina administrada por bomba de analgesia controlada pelo paciente. resultados: O consumo total de morfina no pós-operatório foi menor no Grupo Cetorolaco mais Dipirona (2 mg) e no Grupo cetorolaco (2 mg) comparado ao Grupo placebo (10,5 mg) com p = 0,10. No Grupo cetorolaco mais dipirona, oito pacientes não referiram dor no pós-operatório, enquanto que apenas três no Grupo cetorolaco e três no Grupo placebo não se queixaram de dor (p = 0,05, teste do χ 2 ). Conclusão: O cetorolaco tem sido amplamente utilizado no tratamento da dor aguda, especialmente a pós-operatória, principalmente em cirurgias de médio e grande porte, isoladas ou associadas aos opioides. No presente estudo, a associação de cetorolaco com dipirona se mostrou superior na analgesia após colecistectomias videolaparoscópicas quando comparada ao cetorolaco.
Avaliação do efeito da dipirona associada ao cetorolaco comparado ao cetorolaco em pós-operatório... more Avaliação do efeito da dipirona associada ao cetorolaco comparado ao cetorolaco em pós-operatório de colecistectomia videolaparoscópica aBStract Objectives: To compare the analgesic effect of ketorolac with the association of ketorolac plus dipyrone after videolaparoscpic cholecystectomy and with a placebo group. Methods: After approval by the Research Ethics Committee and after having the informed consent signed, 60 patients aged between 18 and 60 years who underwent videolaparoscopic cholecystectomy were evaluated for the post-operative analgesia provided by ketorolac compared to ketorolac plus dipyrone. The patients underwent general anesthesia (with propofol, alfentanil, rocuronium and maintenance with isoflurane). Twenty patients received 20 ml water, 20 patients received ketorolac 30 mg in 20 ml water and 20 received ketorolac 30 mg plus dipyrone 2 g in 20 ml water, during anesthetic induction. In the post-operative recovery room, the patients were evaluated to the moment of their first pain complaint with the use of a visual analogue scale and a verbal pain scale every hour in the first six hours. When necessary, morphine was administered as a rescue medication for pain relief and a PCA pump with morphine solution was turned on. results: Total morphine use was lower in the ketorolac plus dipyrone Group (2 mg) and in the ketorolac (2 mg) Group, compared to the placebo Group (10.5 mg). Of 20 cases of ketorolac plus dipyrone, eight patients did not complain of pain in the post-operative period, while only three patients did not complain in the ketorolac Group and in the placebo Group (p = 0,05). conclusion: Ketorolac is a potent analgesic agent widely used for acute pain treatment, especially after surgeries, with an analgesic potency comparable to that of opiates, the most commonly drugs used during the post-operative of medium to major surgeries. In this study, the results analyzed at this moment show that the association of ketorolac plus dipyrone seemed to be superior to post-operative analgesia compared to the use of ketorolac.
We report measurements of branching fractions and charge asymmetries of exclusive decays of neutr... more We report measurements of branching fractions and charge asymmetries of exclusive decays of neutral and charged B mesons into two-body final states containing a charmonium state and a light strange meson. The charmonium mesons considered are J/Psi, Psi(2S) and Chi_c1, and the light meson is either K or K*. We use a sample of about 124 million BBbar events collected with the BABAR detector at the PEP-II storage ring at the Stanford Linear Accelerator Center.
The Balanced Scorecard (BSC) is a validated tool to monitor enterprise performances against speci... more The Balanced Scorecard (BSC) is a validated tool to monitor enterprise performances against specific objectives. Through the choice and the evaluation of strategic Key Performance Indicators (KPIs), it provides a measure of the past company's outcome and allows planning future managerial strategies. The Fresenius Medical Care (FME) BSC makes use of 30 KPIs for a continuous quality improvement strategy within its dialysis clinics. Each KPI is monthly associated to a score that summarizes the clinic efficiency for that month. Standard statistical methods are currently used to analyze the BSC data and to give a comprehensive view of the corporate improvements to the top management. We herein propose the Self-Organizing Maps (SOMs) as an innovative approach to extrapolate information from the FME BSC data and to present it in an easy-readable informative form. A SOM is a computational technique that allows projecting high-dimensional datasets to a two-dimensional space (map), thus providing a compressed representation. The SOM unsupervised (self-organizing) training procedure results in a map that preserves similarity relations existing in the original dataset; in this way, the information contained in the high-dimensional space can be more easily visualized and understood. The present work demonstrates the effectiveness of the SOM approach in extracting useful information from the 30-dimensional BSC dataset: indeed, SOMs enabled both to highlight expected relationships between the KPIs and to uncover results not predictable with traditional analyses. Hence we suggest SOMs as a reliable complementary approach to the standard methods for BSC interpretation.
We present a measurement of the branching fraction and photon energy spectrum for the decay B -->... more We present a measurement of the branching fraction and photon energy spectrum for the decay B --> X_s gamma using data from the BaBar experiment. The data sample corresponds to an integrated luminosity of 210 fb^{-1}, from which approximately 680 000 BB events are tagged by a fully reconstructed hadronic decay of one of the B mesons. In the decay of the second B meson, an isolated high--energy photon is identified. We measure BR(B --> X_s gamma) = (3.66 +- 0.85_{stat} +- 0.60_{syst}) x 10^{-4} for photon energies E_gamma above 1.9 GeV in the B rest frame. From the measured spectrum we calculate the first and second moments for different minimum photon energies, which are used to extract the heavy-quark parameters m_b and mu_{pi}^2. In addition, measurements of the direct CP asymmetry and isospin asymmetry are presented.
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Papers by Emanuel Oliva