38 research outputs found

    Inundações no município do Porto em janeiro de 2023: avaliação baseada numa revisão de literatura

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    Neste trabalho, foram analisadas as inundações ocorridas no Porto - Portugal em 7 de janeiro de 2023, que resultaram em um intenso escoamento superficial devido à forte precipitação. Para entender melhor as causas dessas inundações, realizamos uma revisão da literatura. Através de pesquisas em plataformas Google Scholar e Science Direct, identificamos 14 referências relevantes, incluindo artigos científicos e dissertações de mestrado, que abordam estratégias de mitigação e prevenção de inundações urbanas. Essas estratégias envolvem melhorias na infraestrutura de drenagem, planejamento urbano sustentável, sistemas de alerta precoce e conscientização pública sobre os riscos. No dia 7 de janeiro de 2023, a cidade enfrentou uma série de inundações que resultaram em danos materiais significativos. As áreas mais afetadas incluíram não apenas a rua Mouzinho da Silveira, mas também a rua Barão de Forrester e a rua dos Clérigos. Essas regiões foram particularmente atingidas pelo avanço das águas, causando danos consideráveis e prolongando os efeitos das inundações na cidade. As estratégias propostas, como a limpeza dos detritos das obras do metro, estudos hidrológicos e melhorias nas infraestruturas e sistemas de drenagem, podem ajudar a prevenir inundações futuras. Também é importante conscientizar a população sobre o risco de inundações e promover a participação de todos na definição e implementação das estratégias. Conclui-se que a implementação integrada dessas estratégias pode fortalecer a resiliência do Porto às inundações, minimizando danos materiais e riscos à segurança.In this work, we analyzed the floods that occurred in Porto - Portugal on January 7, 2023, which resulted in intense surface runoff due to heavy precipitation.To better understand the causes of these floods, we conducted a literature review. Through searches on Google Scholar and Science Direct platforms, we identified 14 relevant references, including scientific articles and master theses, that address mitigation and prevention strategies for urban flooding. These strategies involve improvements in drainage infrastructure, sustainable urban planning, early warning systems and public awareness of the risks. On January 7, 2023, the city faced a series of floods that resulted in significant material damage. The most affected areas included not only Mouzinho da Silveira Street but also Barão de Forrester Street and Cl�\xA9rigos Street. These regions were particularly impacted by the advancing waters, causing considerable damage and prolonging the effects of the floods in the city. The proposed strategies, such as cleaning debris from the metro works, hydrological studies and improvements in infrastructure and drainage systems, can help prevent future flooding. It is also important to make the population aware of the risk of flooding and to promote everyone's participation in defining and implementing the strategies. It is concluded that the integrated implementation of these strategies can strengthen the Porto's resilience to flooding, minimizing material damage and safety risks. The adaptation of these strategies to local characteristics and the collaboration between government authorities, urban planning experts and local communities are essential to address the challenges and promote effective flood management in Porto

    INUNDAÇÕES NO MUNICÍPIO DO PORTO EM JANEIRO DE 2023 : AVALIAÇÃO BASEADA NUMA REVISÃO DE LITERATURA

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    In this work, we analyzed the floods that occurred in Porto - Portugal on January 7, 2023, which resulted in intense surface runoff due to heavy precipitation.To better understand the causes of these floods, we conducted a literature review. Through searches on Google Scholar and Science Direct platforms, we identified 14 relevant references, including scientific articles and master theses, that address mitigation and prevention strategies for urban flooding. These strategies involve improvements in drainage infrastructure, sustainable urban planning, early warning systems and public awareness of the risks. On January 7, 2023, the city faced a series of floods that resulted in significant material damage. The most affected areas included not only Mouzinho da Silveira Street but also Barão de Forrester Street and Clérigos Street. These regions were particularly impacted by the advancing waters, causing considerable damage and prolonging the effects of the floods in the city. The proposed strategies, such as cleaning debris from the metro works, hydrological studies and improvements in infrastructure and drainage systems, can help prevent future flooding. It is also important to make the population aware of the risk of flooding and to promote everyone's participation in defining and implementing the strategies. It is concluded that the integrated implementation of these strategies can strengthen Porto's resilience to flooding, minimizing material damage and safety risks. The adaptation of these strategies to local characteristics and the collaboration between government authorities, urban planning experts and local communities are essential to address the challenges and promote effective flood management in Porto.En este estudio, se analizaron las inundaciones que ocurrieron en Oporto - Portugal el 7 de enero de 2023, las cuales resultaron en un intenso escurrimiento superficial debido a fuertes precipitaciones. Para entender mejor las causas de estas inundaciones, se llevó a cabo una revisión de la literatura. A través de investigaciones en las plataformas Google Scholar y Science Direct, identificamos 14 referencias relevantes, incluyendo artículos científicos y tesis de maestría, que abordan estrategias de mitigación y prevención de inundaciones urbanas. Estas estrategias incluyen mejoras en la infraestructura de drenaje, planificación urbana sostenible, sistemas de alerta temprana y concientización pública sobre los riesgos. El 7 de enero de 2023, la ciudad enfrentó una serie de inundaciones que resultaron en daños materiales significativos. Las áreas más afectadas incluyeron no solo la calle Mouzinho da Silveira, sino también la calle Barão de Forrester y la calle dos Clérigos. Estas regiones fueron particularmente afectadas por el avance de las aguas, causando daños considerables y prolongando los efectos de las inundaciones en la ciudad. Las estrategias propuestas, como la limpieza de escombros de las obras del metro, estudios hidrológicos y mejoras en la infraestructura y sistemas de drenaje, pueden ayudar a prevenir futuras inundaciones. También es importante concientizar a la población sobre el riesgo de inundaciones y promover la participación de todos en la definición e implementación de las estrategias. Se concluye que la implementación integrada de estas estrategias puede fortalecer la resiliencia de Oporto ante inundaciones, minimizando daños materiales y riesgos para la seguridad.Neste trabalho, foram analisadas as inundações ocorridas no Porto - Portugal em 7 de janeiro de 2023, que resultaram em um intenso escoamento superficial devido à forte precipitação. Para entender melhor as causas dessas inundações, realizamos uma revisão da literatura. Através de pesquisas em plataformas Google Scholar e Science Direct, identificamos 14 referências relevantes, incluindo artigos científicos e dissertações de mestrado, que abordam estratégias de mitigação e prevenção de inundações urbanas. Essas estratégias envolvem melhorias na infraestrutura de drenagem, planejamento urbano sustentável, sistemas de alerta precoce e conscientização pública sobre os riscos. No dia 7 de janeiro de 2023, a cidade enfrentou uma série de inundações que resultaram em danos materiais significativos. As áreas mais afetadas incluíram não apenas a rua Mouzinho da Silveira, mas também a rua Barão de Forrester e a rua dos Clérigos. Essas regiões foram particularmente atingidas pelo avanço das águas, causando danos consideráveis e prolongando os efeitos das inundações na cidade. As estratégias propostas, como a limpeza dos detritos das obras do metro, estudos hidrológicos e melhorias nas infraestruturas e sistemas de drenagem, podem ajudar a prevenir inundações futuras. Também é importante conscientizar a população sobre o risco de inundações e promover a participação de todos na definição e implementação das estratégias. Conclui-se que a implementação integrada dessas estratégias pode fortalecer a resiliência do Porto às inundações, minimizando danos materiais e riscos à segurança

    Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

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    A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

    ATLANTIC-PRIMATES: a dataset of communities and occurrences of primates in the Atlantic Forests of South America

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    Primates play an important role in ecosystem functioning and offer critical insights into human evolution, biology, behavior, and emerging infectious diseases. There are 26 primate species in the Atlantic Forests of South America, 19 of them endemic. We compiled a dataset of 5,472 georeferenced locations of 26 native and 1 introduced primate species, as hybrids in the genera Callithrix and Alouatta. The dataset includes 700 primate communities, 8,121 single species occurrences and 714 estimates of primate population sizes, covering most natural forest types of the tropical and subtropical Atlantic Forest of Brazil, Paraguay and Argentina and some other biomes. On average, primate communities of the Atlantic Forest harbor 2 ± 1 species (range = 1–6). However, about 40% of primate communities contain only one species. Alouatta guariba (N = 2,188 records) and Sapajus nigritus (N = 1,127) were the species with the most records. Callicebus barbarabrownae (N = 35), Leontopithecus caissara (N = 38), and Sapajus libidinosus (N = 41) were the species with the least records. Recorded primate densities varied from 0.004 individuals/km 2 (Alouatta guariba at Fragmento do Bugre, Paraná, Brazil) to 400 individuals/km 2 (Alouatta caraya in Santiago, Rio Grande do Sul, Brazil). Our dataset reflects disparity between the numerous primate census conducted in the Atlantic Forest, in contrast to the scarcity of estimates of population sizes and densities. With these data, researchers can develop different macroecological and regional level studies, focusing on communities, populations, species co-occurrence and distribution patterns. Moreover, the data can also be used to assess the consequences of fragmentation, defaunation, and disease outbreaks on different ecological processes, such as trophic cascades, species invasion or extinction, and community dynamics. There are no copyright restrictions. Please cite this Data Paper when the data are used in publications. We also request that researchers and teachers inform us of how they are using the data. © 2018 by the The Authors. Ecology © 2018 The Ecological Society of Americ

    Rationale, study design, and analysis plan of the Alveolar Recruitment for ARDS Trial (ART): Study protocol for a randomized controlled trial

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    Background: Acute respiratory distress syndrome (ARDS) is associated with high in-hospital mortality. Alveolar recruitment followed by ventilation at optimal titrated PEEP may reduce ventilator-induced lung injury and improve oxygenation in patients with ARDS, but the effects on mortality and other clinical outcomes remain unknown. This article reports the rationale, study design, and analysis plan of the Alveolar Recruitment for ARDS Trial (ART). Methods/Design: ART is a pragmatic, multicenter, randomized (concealed), controlled trial, which aims to determine if maximum stepwise alveolar recruitment associated with PEEP titration is able to increase 28-day survival in patients with ARDS compared to conventional treatment (ARDSNet strategy). We will enroll adult patients with ARDS of less than 72 h duration. The intervention group will receive an alveolar recruitment maneuver, with stepwise increases of PEEP achieving 45 cmH(2)O and peak pressure of 60 cmH2O, followed by ventilation with optimal PEEP titrated according to the static compliance of the respiratory system. In the control group, mechanical ventilation will follow a conventional protocol (ARDSNet). In both groups, we will use controlled volume mode with low tidal volumes (4 to 6 mL/kg of predicted body weight) and targeting plateau pressure <= 30 cmH2O. The primary outcome is 28-day survival, and the secondary outcomes are: length of ICU stay; length of hospital stay; pneumothorax requiring chest tube during first 7 days; barotrauma during first 7 days; mechanical ventilation-free days from days 1 to 28; ICU, in-hospital, and 6-month survival. ART is an event-guided trial planned to last until 520 events (deaths within 28 days) are observed. These events allow detection of a hazard ratio of 0.75, with 90% power and two-tailed type I error of 5%. All analysis will follow the intention-to-treat principle. Discussion: If the ART strategy with maximum recruitment and PEEP titration improves 28-day survival, this will represent a notable advance to the care of ARDS patients. Conversely, if the ART strategy is similar or inferior to the current evidence-based strategy (ARDSNet), this should also change current practice as many institutions routinely employ recruitment maneuvers and set PEEP levels according to some titration method.Hospital do Coracao (HCor) as part of the Program 'Hospitais de Excelencia a Servico do SUS (PROADI-SUS)'Brazilian Ministry of Healt

    COVID-19 symptoms at hospital admission vary with age and sex: results from the ISARIC prospective multinational observational study

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    Background: The ISARIC prospective multinational observational study is the largest cohort of hospitalized patients with COVID-19. We present relationships of age, sex, and nationality to presenting symptoms. Methods: International, prospective observational study of 60 109 hospitalized symptomatic patients with laboratory-confirmed COVID-19 recruited from 43 countries between 30 January and 3 August 2020. Logistic regression was performed to evaluate relationships of age and sex to published COVID-19 case definitions and the most commonly reported symptoms. Results: ‘Typical’ symptoms of fever (69%), cough (68%) and shortness of breath (66%) were the most commonly reported. 92% of patients experienced at least one of these. Prevalence of typical symptoms was greatest in 30- to 60-year-olds (respectively 80, 79, 69%; at least one 95%). They were reported less frequently in children (≤ 18 years: 69, 48, 23; 85%), older adults (≥ 70 years: 61, 62, 65; 90%), and women (66, 66, 64; 90%; vs. men 71, 70, 67; 93%, each P < 0.001). The most common atypical presentations under 60 years of age were nausea and vomiting and abdominal pain, and over 60 years was confusion. Regression models showed significant differences in symptoms with sex, age and country. Interpretation: This international collaboration has allowed us to report reliable symptom data from the largest cohort of patients admitted to hospital with COVID-19. Adults over 60 and children admitted to hospital with COVID-19 are less likely to present with typical symptoms. Nausea and vomiting are common atypical presentations under 30 years. Confusion is a frequent atypical presentation of COVID-19 in adults over 60 years. Women are less likely to experience typical symptoms than men

    Measurement of the W boson polarisation in ttˉt\bar{t} events from pp collisions at s\sqrt{s} = 8 TeV in the lepton + jets channel with ATLAS

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    Measurement of jet fragmentation in Pb+Pb and pppp collisions at sNN=2.76\sqrt{{s_\mathrm{NN}}} = 2.76 TeV with the ATLAS detector at the LHC

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    Search for new phenomena in events containing a same-flavour opposite-sign dilepton pair, jets, and large missing transverse momentum in s=\sqrt{s}= 13 pppp collisions with the ATLAS detector

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    Evolution and epidemic spread of SARS-CoV-2 in Brazil

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    Detailed metadata on all 1,182 sequences used in this study. File contains information on epidemiology, demography, location, diagnostics, sequencing statistics and evolution of 427 SARS-CoV-2 sequences generated in this study and 755 sequences downloaded from GISAID
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