620 research outputs found

    Dinámica del complejo trips-tospovirus en la vegetación espontánea

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    Se desconoce el rol que juegan las principales especies vegetación espontánea (VE) que abundan en los agroecosistemas del Cinturon Hortifloricola Platense (CHFP) en el ciclo epidemiológico de los tospovirus y en el control biológico de sus vectores (principalmente Frankliniella occidentalis). Además, esta VE puede ser reservorio de trips virulíferos que luego atacaran a los cultivos. Los objetivos de este trabajo son: -Estudiar la capacidad hospedera de las principales especies de VE del CHFP, para todos los vectores de tospovirus. -Estudiar la presencia y abundancia de enemigos naturales asociados a los trips en la VE. -Establecer un listado de las especies de VE en función de su potencial perjuicio/beneficio en el manejo del cultivo.Área: Ciencias Agrícolas, Produccion y Salud Anima

    Dinámica del complejo trips-tospovirus en la vegetación espontánea

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    Se desconoce el rol que juegan las principales especies vegetación espontánea (VE) que abundan en los agroecosistemas del Cinturon Hortifloricola Platense (CHFP) en el ciclo epidemiológico de los tospovirus y en el control biológico de sus vectores (principalmente Frankliniella occidentalis). Además, esta VE puede ser reservorio de trips virulíferos que luego atacaran a los cultivos. Los objetivos de este trabajo son: -Estudiar la capacidad hospedera de las principales especies de VE del CHFP, para todos los vectores de tospovirus. -Estudiar la presencia y abundancia de enemigos naturales asociados a los trips en la VE. -Establecer un listado de las especies de VE en función de su potencial perjuicio/beneficio en el manejo del cultivo.Área: Ciencias Agrícolas, Produccion y Salud Anima

    Essays in Macroeconomics

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    Inequality and the Medium-Term Business Cycle. Ruling Out Stagnation Traps. World Trade Stagnation

    The University of Malta (Seismic Monitoring and Research Unit), University of Basilicata and Imaa-CNR (Italy) operations during the 2012 Emilia seismic sequence

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    On 20th May 2012 (02:03 UTC), and on 29th May 2012 (07.00 UTC) two major earthquakes occurred in Northern Italy. The two earthquakes caused 27 people to be killed (7 on 20th May and 20 on 29th May), at least 400 injured, and up to 45,000 homeless in total, with initial estimates placing the total economic loss at several billion Euros. The main goal of this communication is to describe the operations and efforts of several researchers and Institutions during the seismic crises of the Emilia sequence. The acquired data can provide tools to reduce the impact of future earthquakes on the local communities.peer-reviewe

    Modular workload format: Extending SWF for modular systems

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    This paper presents the Modular Workload Format (MWF), a proposal for extending the widely accepted Standard Workload Format (SWF) for job scheduling evaluation. David Talby and Dror Feitelson proposed the SWF in 1999, allowing to describe data center workload in a synthesized way. Its simplicity, representing each job by a single line in a text file and including details to make job scheduling evaluation quite accurate, was part of its success. Using these years’ experience but considering new system and workload characteristics, we propose an extension to support multiple steps in a single job, heterogeneous jobs, and relevant inputs not covered by the SWF as energy/power references. The goal of this contribution is to adapt the SWF to current trends in architectures and workloads. Moreover, we propose a simple approach for converting any already existing SWF trace file into an MWF trace file to be able to reuse already existing traces.This work is partially supported from the European Union’s Horizon 2020 under grant agreement No. 754304 (DEEP-EST Project) and the Spanish grant PID2019-107255GB-C21.Peer ReviewedPostprint (author's final draft

    Periodic Preamble-Based Frequency Recovery in OFDM Receivers Plagued by I/Q Imbalance

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    The direct conversion receiver (DCR) architecture has received much attention in the last few years as an effective means to obtain user terminals with reduced cost, size, and power consumption. A major drawback of a DCR device is the possible insertion of I/Q imbalances in the demodulated signal, which can seriously degrade the performance of conventional synchronization algorithms. In this paper, we investigate the problem of carrier frequency offset (CFO) recovery in an OFDM receiver equipped with a DCR front-end. Our approach is based on maximum likelihood (ML) arguments and aims at jointly estimating the CFO, the useful signal component, and its mirror image. In doing so, we exploit knowledge of the pilot symbols transmitted within a conventional repeated training preamble appended in front of each data packet. Since the exact ML solution turns out to be too complex for practical purposes, we propose two alternative schemes which can provide nearly optimal performance with substantial computational saving. One of them provides the CFO in closed-form, thereby avoiding any grid-search procedure. The accuracy of the proposed methods is assessed in a scenario compliant with the 802.11a WLAN standard. Compared with existing solutions, the novel schemes achieve improved performance at the price of a tolerable increase of the processing load

    Effect of furosemide administration before F-18 fluorodeoxyglucose positron emission tomography/computed tomography on urine radioactivity and detection of uterine cervical cancer

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    BACKGROUND: In evaluating uterine cervical cancer with 18F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT), there may be overlap between the FDG activity at tumor sites and nonspecific radioactivity in the urine. We evaluated the efficacy of furosemide premedication with routine hydration to obtain better contrast and less overlap between cervical cancer and the urinary bladder. MATERIAL AND METHODS: We retrospectively evaluated 166 patients who had primary or relapsed cervical cancer and underwent FDG PET/CT scanning with (133 patients) or without (33 patients) furosemide premedication (10 mg intravenous, slowly injected 30 min before the scan). We calculated bladder and tumor maximum and median standardized uptake value (SUVmax and SUVmed), and overlap between tumor and urinary activity was detected visually. RESULTS: Overlap between urinary and tumor radioactivity was observed in 8 of 133 scans (6%) in patients who receive furosemide and in 3 of 33 scans (9%) in patients who did not receive furosemide. The SUVmax and SUVmed for the bladder were significantly lower in patients who were pretreated with furosemide (SUVmax, 6.3; SUVmed, 4.6) than patients who were not pretreated with furosemide (SUVmax, 8.8 [P ≤ 0.008]; SUVmed, 6.5 [P ≤ 0.002]). The tumor SUVmax and SUVmed were similar between the patient groups. CONCLUSION: Furosemide premedication before FDG PET/CT scanning may enable improved evaluation of activity and extension of cervical cancer.

    Dinámica del complejo trips-tospovirus en la vegetación espontánea

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    Se desconoce el rol que juegan las principales especies vegetación espontánea (VE) que abundan en los agroecosistemas del Cinturon Hortiflorícola Platense (CHFP) en el ciclo epidemiológico de los tospovirus y en el control biológico de sus vectores (principalmente Frankliniella occidentalis). Además, esta VE puede ser reservorio de trips virulíferos que luego atacaran a los cultivos. Los objetivos de este trabajo son: -Estudiar la capacidad hospedera de las principales especies de VE del CHFP, para todos los vectores de tospovirus. -Estudiar la presencia y abundancia de enemigos naturales asociados a los trips en la VE. -Establecer un listado de las especies de VE en función de su potencial perjuicio/beneficio en el manejo del cultivo.Área: Ciencias Agrícolas, Produccion y Salud AnimalFacultad de Ciencias Agrarias y Forestale

    Dinámica del complejo trips-tospovirus en la vegetación espontánea

    Get PDF
    Se desconoce el rol que juegan las principales especies vegetación espontánea (VE) que abundan en los agroecosistemas del Cinturon Hortiflorícola Platense (CHFP) en el ciclo epidemiológico de los tospovirus y en el control biológico de sus vectores (principalmente Frankliniella occidentalis). Además, esta VE puede ser reservorio de trips virulíferos que luego atacaran a los cultivos. Los objetivos de este trabajo son: -Estudiar la capacidad hospedera de las principales especies de VE del CHFP, para todos los vectores de tospovirus. -Estudiar la presencia y abundancia de enemigos naturales asociados a los trips en la VE. -Establecer un listado de las especies de VE en función de su potencial perjuicio/beneficio en el manejo del cultivo.Área: Ciencias Agrícolas, Produccion y Salud AnimalFacultad de Ciencias Agrarias y Forestale
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