275 research outputs found
Ostracoda: database for the Neogene of Portugal
The "Ostracoda: database for the Neogene of Portugal", prepared under the Project "POCTl/36531/PAL/2000 - Studies on
Portuguese Palaeontology / Post-Paleozoic", is presented. It provides information about 158 especies that have been recognized in
sections and boreholes concerning Neogene units in Portugal
A Wide Database for a Multicenter Study on Pneumocystis jirovecii Pneumonia in Intensive Care Units
Pneumocystis jirovecii pneumonia (PJP) is an opportunistic fungal infection that may affect patients with immunosuppression. In order to improve the diagnosis accuracy for PJP, facilitating the collection of data across Europe to reliably assess the performance of diagnostic tests for PJP is essential to improve the care of critically ill patients developing this severe condition. Such large data can be collected thanks to the contribution of several European hospitals in the compilation of a dedicated electronic Case Report Form (eCRF). The main focus of this work is to create an interface with high ergonomics both in the compilation and in the subsequent validation of the records
Crilin: A CRystal calorImeter with Longitudinal InformatioN for a future Muon Collider
The measurement of physics processes at new energy frontier experiments
requires excellent spatial, time, and energy resolutions to resolve the
structure of collimated high-energy jets. In a future Muon Collider, the
beam-induced backgrounds (BIB) represent the main challenge in the design of
the detectors and of the event reconstruction algorithms. The technology and
the design of the calorimeters should be chosen to reduce the effect of the
BIB, while keeping good physics performance. Several requirements can be
inferred: i) high granularity to reduce the overlap of BIB particles in the
same calorimeter cell; ii) excellent timing (of the order of 100 ps) to reduce
the out-of-time component of the BIB; iii) longitudinal segmentation to
distinguish the signal showers from the fake showers produced by the BIB; iv)
good energy resolution (less than 10%/sqrt(E)) to obtain good physics
performance, as has been already demonstrated for conceptual particle flow
calorimeters. Our proposal consists of a semi-homogeneous electromagnetic
calorimeter based on Lead Fluoride Crystals (PbF2) readout by surface-mount
UV-extended Silicon Photomultipliers (SiPMs): the Crilin calorimeter. In this
paper, the performances of the Crilin calorimeter in the Muon Collider
framework for hadron jets reconstruction have been analyzed. We report the
single components characterizations together with the development of a
small-scale prototype, consisting of 2 layers of 3x3 crystals each
Beam test, simulation, and performance evaluation of PbF and PWO-UF crystals with SiPM readout for a semi-homogeneous calorimeter prototype with longitudinal segmentation
Crilin (Crystal Calorimeter with Longitudinal Information) is a
semi-homogeneous, longitudinally segmented electromagnetic calorimeter based on
high-, ultra-fast crystals with UV-extended SiPM readout. The Crilin design
has been proposed as a candidate solution for both a future Muon Collider
barrel ECAL and for the Small Angle Calorimeter of the HIKE experiment. As a
part of the Crilin development program, we have carried out beam tests of small
(~mm) lead fluoride (PbF) and ultra-fast lead
tungstate (PbWO, PWO) crystals with 120~GeV electrons at the CERN SPS to
study the light yield, timing response, and systematics of light collection
with a proposed readout scheme. For a single crystal of PbF, corresponding
to a single Crilin cell, a time resolution of better than 25~ps is obtained for
3 GeV of deposited energy. For a single cell of \pwo, a time resolution of
better than 45~ps is obtained for the same range of deposited energy. This
timing performance fully satisfies the design requirements for the Muon
Collider and HIKE experiments. Further optimizations of the readout scheme and
crystal surface preparation are expected to bring further improvements
Evaluación de acolchados para el control de la flora arvense en un cultivo de tomate: dos años de resultados
En el presente proyecto se estudian alternativas al uso de acolchado plástico con polietileno, el cual es un residuo de difícil gestión tanto en producción hortícola ecológica como en convencional. Durante los años 2006 y 2007 se han llevado a cabo diez ensayos de campo en tomate de industria regado por goteo en cinco distintos lugares de España. Se han ensayado diferentes materiales biodegradables: dos plásticos biodegradables (Mater-Bi y Biofilm), un plástico oxobiodegradable (Enviroplast), dos papeles (papel negro Mimcord y marrón Saikraft), un acolchado de paja de cebada y dos testigos (sin desherbar y con control manual de las malas hierbas). Todas las películas fueron colocadas con máquina acolchadora, y los papeles requirieron un ajuste especial para evitar roturas. En todas las localidades y en ambos años el control de la flora arvense fue bueno o muy bueno para todos los acolchados, menos para la paja. Respecto al rendimiento de tomate, éste fue muy similar para todos los acolchados en ambos años, aunque ligeramente inferior que para el polietileno. En algunas localidades fue difícil mantener la paja en el suelo debido a su dispersión con el viento, mientras que en otras se mantuvo durante todo el ciclo. A pesar del peor control de la flora arvense, la paja dio buenos rendimientos en algunas localidades. El plástico oxobiodegradable mostró un comportamiento muy irregular entre localidades en cuanto a su degradación y cabe destacar la ausencia de degradación de la parte enterrada en todos los casos. Los plásticos biodegradables se degradaron de forma correcta cuando el cultivo ya cubría parte del suelo. El papel Mimcord fue más elástico permitiendo una más fácil colocación en el suelo pero es sensiblemente más caro que el marrón. En 2007 el rendimiento fue ligeramente menor para el papel marrón en 2007, posiblemente debido a que se trató de un año más frío. Los diferentes materiales biodegradables y el papel negro han sido los tratamientos más productivos y que mejor han controlado la flora arvense. Se concluye que existen alternativas técnicamente viables para sustituir el acolchado con polietileno en el cultivo de tomate de industria. No obstante, el elevado coste de la mayoría de estos materiales es el principal factor limitante para su adopción.Publishe
Trabectedin plus pegylated liposomal doxorubicin in relapsed ovarian cancer: outcomes in the partially platinum-sensitive (platinum-free interval 6–12 months) subpopulation of OVA-301 phase III randomized trial
Background: OVA-301 is a large randomized trial that showed superiority of trabectedin plus pegylated liposomal doxorubicin (PLD) over PLD alone in relapsed ovarian cancer. The optimal management of patients with partially platinum-sensitive relapse [6–12 months platinum-free interval (PFI)] is unclear
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