1,646 research outputs found
The ALICE electromagnetic calorimeter high level triggers
The ALICE (A Large Ion Collider Experiment) detector yields a huge sample of
data from different sub-detectors. On-line data processing is applied to select
and reduce the volume of the stored data. ALICE applies a multi-level hardware
trigger scheme where fast detectors are used to feed a three-level (L0, L1, and
L2) deep chain. The High-Level Trigger (HLT) is a fourth filtering stage
sitting logically between the L2 trigger and the data acquisition event
building. The EMCal detector comprises a large area electromagnetic calorimeter
that extends the momentum measurement of photons and neutral mesons up to
GeV/c, which improves the ALICE capability to perform jet
reconstruction with measurement of the neutral energy component of jets. An
online reconstruction and trigger chain has been developed within the HLT
framework to sharpen the EMCal hardware triggers, by combining the central
barrel tracking information with the shower reconstruction (clusters) in the
calorimeter. In the present report the status and the functionality of the
software components developed for the EMCal HLT online reconstruction and
trigger chain will be discussed, as well as preliminary results from their
commissioning performed during the 2011 LHC running period.Comment: Proceeding for the CHEP 2012 Conferenc
NiO-nanoflowers decorating a plastic electrode for the non-enzymatic amperometric detection of H2O2 in milk: old issue, new challenge
In food supply chain, there are regulatory limitations on the use of chemicals for cleaning processing lines
since the healthiness of the commodities must be guaranteed if accidentally traces of these detergents and
sanitizers pass to them. Hydrogen peroxide, is a commonly used sanitizer in the cleaning of the food
processing lines having both bactericidal and bacteriostatic properties, however, it produces inflammatory
effects on the human body. The availability of rapid systems to detect its accidental presence is therefore
useful to speed up the control and apply corrective actions. In the present work, a drop casting and easily
prepared plastic graphite / PVC electrode decorated with NiO nanostructures has been investigated as
electrochemical sensor for the non-enzymatic amperometric determination of H2O2. 24 The catalytic activity,
dispersion, and stability of NiO nanostructures mixed with plastic nanocomposite electrode have been studied
in detail. The preparation method, particularly the precipitating agents used in the synthesis of NiO
nanostructures strongly influenced their morphology and porosity. Further, the electrochemical response of
NiO-PE electrodes towards H2O2 resulted to be morphology-dependent. The non-enzymatic electrochemical
sensor was optimized for the rapid and sensitive detection of H2O2 present in milk with no sample pre-
treatments. NiO nanoflowers showed the best catalytic activity towards H2O2, a linear range that extends up
to 4 mM and a LOD of 5 μM (3sd of the blank signal) were obtained
Biologia de Doru luteipes (Scudder) e sua capacidade predatória de ovos de Helicoverpa zea (Boddie).
O objetivo deste trabalho foi estudar a biologia e o potencial de Doru luteipes (Scudder) em laboratorio, como predador de ovos de Helicoverpa zea (Boddie), Ninfas de um dia de idade e adultos foram individualizados em placas de Petri, receberam como alimento, ovos de H. zea. O periodo de incubacao foi, em media, 7,6 dias. O periodo ninfal (quatro instares) foi de 34,4 dias. O ciclo do inseto foi, em media, 217,9 dias. O periodo pre-reprodutivo foi, em media, 30,7 dias, sendo que as femeas ovipositaram mais de uma vez, mesmo quando nao fecundadas. O numero de ovos por postura foi de 15,9, com a viabilidade chegando a 85,2%. A longevidade media do adulto, foi de 175,9 dias. Em media uma ninfa consumiu 23,7 ovos de H. zea por dia, num total de 812,9 ovos durante esta fase. Ja o adulto do predador consumiu 7457,4 ovos, com media diaria de 42,1 ovos. No geral, um predador se alimentou durante sua vida, de aproximadamente 8276 ovos de H. zea (39 ovos/dia)
Atividade enzimática e teor de carboidratos solúveis em algodoeiro herbaceo cultivado sob estresse salino.
The Use of Agent-Based Simulation to Discover Extreme Cases in Immune-Interactions with Early-Stage Cancer Scenarios
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