93 research outputs found
Assessment of long-term outcome in a population at high risk for coronary artery disease: Mortality risk associated with ejection fraction differs across resting nuclear perfusion findings
Doses de nitrogĂȘnio em cultivares de feijĂŁo-comum em sistema plantio direto recĂ©m-instalado
The first years of the no-tillage system can promote changes in soil balance that directly impact on managements such as nitrogen fertilization. The aim was to evaluate the agronomic and qualitative performance of common bean cultivars under nitrogen rates in top-dressing in the first year of no-tillage system. The experiment was carried out in the winter season in a randomized block design in a split plot scheme, with four replications. The plots consisted of three common bean cultivars (IAC Alvorada, IAC MilĂȘnio and PĂ©rola) and the subplots by four N rates (urea) applied in top-dressing (0, 70, 140 and 210 kg ha-1),. The common bean were sown under no-tillage system after maize crop, which showed a straw production of 7.0 Mg ha-1 of dry matter. The cultivars IAC Alvorada and IAC MilĂȘnio were more efficient and responsive than PĂ©rola cultivar. The cultivars IAC Alvorada and IAC MilĂȘnio presented, on average, grain yield and sieve yield 12.5 and 15.2% higher than PĂ©rola cultivar, respectively. Nitrogen rates in top-dressing and common bean cultivars promote differences in agronomic performance and quality independently. The grain yield of common bean cultivars showed linear increments with the nitrogen rates in top-dressing in the first year of no-tillage system, indicating a higher N requirement than the rate of 90 kg ha-1 of N recommended for the crop.Os primeiros anos da adoção do sistema plantio direto pode promover alteraçÔes no equilĂbrio do solo que impactam diretamente em manejos, como a adubação nitrogenada. Objetivou-se avaliar o desempenho agronĂŽmico e qualitativo de cultivares de feijĂŁo-comum sob doses de nitrogĂȘnio em cobertura no primeiro ano de adoção do sistema plantio direto. O experimento foi conduzido na safra de inverno em delineamento de blocos casualizados em esquema de parcelas subdivididas, com quatro repetiçÔes. As parcelas foram constituĂdas de trĂȘs cultivares de feijĂŁo (IAC Alvorada, IAC MilĂȘnio e PĂ©rola) e as subparcelas por quatro doses de N (ureia) aplicadas em cobertura (0, 70, 140 e 210 kg ha-1). O feijĂŁo foi semeado em sistema plantio direto apĂłs a cultura do milho, que apresentou produção de palhada de 7,0 Mg ha-1 de massa seca. As cultivares IAC Alvorada e IAC MilĂȘnio foram mais eficientes e responsivas do que a cultivar PĂ©rola. As cultivares IAC Alvorada e IAC MilĂȘnio apresentaram, na mĂ©dia, produtividade e rendimento de peneiras 12,5 e 15,2% superior Ă cultivar PĂ©rola, respectivamente. As doses de nitrogĂȘnio em cobertura e as cultivares de feijĂŁo-comum promovem diferenças no desempenho agronĂŽmico e qualidade de maneira independente. A produtividade das cultivares de feijĂŁo apresentam incrementos lineares com as doses de nitrogĂȘnio em cobertura no primeiro ano de adoção do sistema plantio direto, indicando maior exigĂȘncia de N do que a dose ideal de 90 kg ha-1 de N recomendada para a cultura
COMPONENTES DE PRODUĂĂO, PRODUTIVIDADE E ATRIBUTOS TECNOLĂGICOS DE CULTIVARES DE FEIJOEIRO DO GRUPO COMERCIAL CARIOCA
In the National Register of Cultivars of the Ministry of Agriculture, Livestock and Supply are registered about 350 cultivars of bean. Bean cultivars, in addition to adaptation to the growing site, should present productive potential and meet the consumers' demands regarding the qualitative attributes. The objective of this study was to evaluate the production, productivity and qualitative attributes of bean cultivars of Carioca commercial group during the autumn-winter period, in order to obtain information on productive capacity and grain quality, with characteristics that meet the producers and also the consumers. The experimental design was a randomized block design, with 13 treatments and 4 replicates. The treatments consisted of the bean cultivars: PĂ©rola, BRS Estilo, BRSMG MadrepĂ©rola, BRS NotĂĄvel, IAC Alvorada, IAC Imperador, IAC MilĂȘnio, IPR 139 (Juriti Claro), IPR Andorinha, TAA Bola Cheia, TAA Dama, TAA Gol e ANfc 9. All common bean cultivars stood out for grain yield, but BRSMG MadrepĂ©rola, IAC MilĂȘnio, IAC Alvorada, TAA Dama, ANfc 9 and BRS Estilo obtained values ââabove the general average of 3,460 kg ha-1. The bean cultivars TAA Dama and BRS Estilo presented interesting characteristics in terms of productivity and grain quality, being suitable for both the producer and the consumer. The cultivars BRSMG MadrepĂ©rola, IAC MilĂȘnio, IAC Alvorada and ANfc 9 presented high productivity and technological quality of the grains, but with time for maximum hydration higher than that used in brazilian cuisine.No Registro Nacional de Cultivares do MinistĂ©rio da Agricultura, PecuĂĄria e Abastecimento estĂŁo registradas cerca de 350 cultivares de feijoeiro. As cultivares de feijoeiro, alĂ©m da adaptação ao local de cultivo, devem apresentar potencial produtivo e atender as exigĂȘncias dos consumidores quanto aos atributos qualitativos. O objetivo foi avaliar os componentes de produção, produtividade e atributos qualitativos de cultivares de feijoeiro do grupo comercial carioca no perĂodo de outono-inverno, visando obter informaçÔes referentes Ă capacidade produtiva e Ă qualidade dos grĂŁos, com caracterĂsticas que atendam os produtores e tambĂ©m aos consumidores. O delineamento experimental utilizado foi o de blocos casualizados, com 13 tratamentos e 4 repetiçÔes. Os tratamentos foram constituĂdos pelas cultivares de feijoeiro: PĂ©rola, BRS Estilo, BRSMG MadrepĂ©rola, BRS NotĂĄvel, IAC Alvorada, IAC Imperador, IAC MilĂȘnio, IPR 139 (Juriti Claro), IPR Andorinha, TAA Bola Cheia, TAA Dama, TAA Gol e ANfc 9. Todas as cultivares de feijoeiro destacaram-se quanto a produtividade de grĂŁos, porĂ©m BRSMG MadrepĂ©rola, IAC MilĂȘnio, IAC Alvorada, TAA Dama, ANfc 9 e BRS Estilo obtiveram valores acima da mĂ©dia geral de 3.460 kg ha-1. As cultivares de feijoeiro TAA Dama e BRS Estilo apresentaram caracterĂsticas interessantes em termos de produtividade e qualidade dos grĂŁos, sendo adequadas tanto para o produtor quanto ao consumidor. As cultivares BRSMG MadrepĂ©rola, IAC MilĂȘnio, IAC Alvorada e ANfc 9 apresentaram alta produtividade e qualidade tecnolĂłgica dos grĂŁos, porĂ©m com tempo para a mĂĄxima hidratação superior ao utilizado na culinĂĄria brasileira
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Comparative Definitions for Moderate-Severe Ischemia in Stress Nuclear, Echocardiography, and Magnetic Resonance Imaging
The lack of standardized reporting of the magnitude of ischemia on noninvasive imaging contributes to variability in translating the severity of ischemia across stress imaging modalities. We identified the risk of coronary artery disease (CAD) death or myocardial infarction (MI) associated with â„10% ischemic myocardium on stress nuclear imaging as the risk threshold for stress echocardiography and cardiac magnetic resonance. A narrative review revealed that â„10% ischemic myocardium on stress nuclear imaging was associated with a median rate of CAD death or MI of 4.9%/year (interquartile range: 3.75% to 5.3%). For stress echocardiography, â„3 newly dysfunctional segments portend a median rate of CAD death or MI of 4.5%/year (interquartile range: 3.8% to 5.9%). Although imprecisely delineated, moderate-severe ischemia on cardiac magnetic resonance may be indicated by â„4 of 32 stress perfusion defects or â„3 dobutamine-induced dysfunctional segments. Risk-based thresholds can define equivalent amounts of ischemia across the stress imaging modalities, which will help to translate a common understanding of patient risk on which to guide subsequent management decisions
Craniofaringioma adamantinomatoso: Adamantinomatous craniopharyngioma
Introdução: Craniofaringiomas Adamantinomatosos sĂŁo tumores do Sistema Nervoso Central, localizados no ducto craniofarĂngeo. Provenientes de cĂ©lulas escamosas e com curso tipicamente benigno, tem prevalĂȘncia na infĂąncia e incidĂȘncia atĂ©, aproximadamente, os 20 anos de idade. O diagnĂłstico Ă© frequentemente tardio pelo seu crescimento lentificado e clĂnica inespecĂfica, agrupada em: cefalĂ©ia, distĂșrbios visuais e de carĂĄter hormonal. O controle sintomĂĄtico pode ser realizado farmacologicamente, embora a localização anatĂŽmica favoreça uma abordagem cirĂșrgica para resolução da patologia, considerando, tambĂ©m, tratamento adjuvante. Apresentação do caso: Paciente do sexo feminino, 9 anos de idade, estudante e natural de Rio Verde - GO, Ă© levado pela mĂŁe ao pediatra, que relata que o paciente tem apresentado cefaleia holocraniana intermitente e sem fator causal especĂfico, hĂĄ aproximadamente 70 dias. Associado ao quadro, refere-se a ganho de peso sem mudanças significativas na dieta ou hĂĄbitos de vida, no entanto, nĂŁo soube especificar o ganho em quilogramas. Foi solicitada RessonĂąncia MagnĂ©tica de crĂąnio, que confirmou o diagnĂłstico de Craniofaringioma Adamantinomatoso. DiscussĂŁo: O desenvolvimento das tĂ©cnicas cirĂșrgicas para ressecção tumoral permite optar por uma ressecção completa ou subtotal associada Ă radioterapia adjuvante (RT), sendo que a segunda permitiu uma taxa maior de sobrevida livre de progressĂŁo de doença. PorĂ©m, nĂŁo pode-se excluir a primeira opção, jĂĄ que Ă© preconizada para indicaçÔes especĂficas, sobretudo diante da localização tumoral. Portanto, a abordagem do tumor deve ser planejada de modo individualizado, jĂĄ que hĂĄ risco de prejuĂzo na qualidade de vida e funcionalidade do indivĂduo, em decorrĂȘncia do sĂtio patolĂłgico e estruturas potencialmente afetadas. ConclusĂŁo: Para estabelecer o tratamento correto deve-se observar a localização e os impactos de cada intervenção avaliando as particularidades de cada paciente
Linfoma de Hodgkin com manifestaçÔes pulmonares exclusivas: Hodgkin's lymphoma with unique pulmonary manifestations
Introdução: O envolvimento pulmonar associado ao linfoma de Hodgkin pode ocorrer tanto de forma primĂĄria como secundĂĄria. A primĂĄria Ă© uma entidade rara e origina-se do tecido linfĂłide associado a mucosa. JĂĄ a secundĂĄria, mais frequente, pode resultar da proliferação direta dos gĂąnglios linfĂĄticos mediastinais ou de disseminação linfĂĄtica ou hematogĂȘnica de outros locais. Apresentação do caso: Paciente do sexo feminino, 42 anos, com quadro de tosse, odinofagia, dor em seios da face. HĂĄ 7 dias iniciou quadro de dispneia e febre, com piora nos Ășltimos 3 dias. Procurou pronto atendimento diversas vezes, com diagnĂłstico e tratamento de sinusite. Foi realizado Rx de seios da face, sem alteraçÔes. Hemograma completo, VHS, teste para tuberculose, sem achados especĂficos. DiscussĂŁo: O linfoma Hodgkin pulmonar primĂĄrio Ă© uma patologia incomum, com poucos casos documentados, consistindo em menos de 1% de todos os linfomas. Apresenta discreta preponderĂąncia de incidĂȘncia em mulheres (1,4:1 F:M) com distribuição bimodal de idade (<35 e >60 anos). Ocorre quando a proliferação linfĂłide clonal afeta os pulmĂ”es e nĂŁo apresenta disseminação extrapulmonar no momento do diagnĂłstico ou nos 3 meses seguintes. ConclusĂŁo: O tratamento Ă© variĂĄvel na literatura, devido a falta de diretrizes, e Ă© determinado de acordo com a extensĂŁo da patologia. A abordagem pode ser via cirurgia, radioterapia ou quimioterapia, sendo que muitas vezes Ă© realizada uma associação dos mĂ©todos
J-PLUS: The javalambre photometric local universe survey
ABSTRACT: TheJavalambrePhotometric Local UniverseSurvey (J-PLUS )isanongoing 12-band photometricopticalsurvey, observingthousands of squaredegrees of theNorthernHemispherefromthededicated JAST/T80 telescope at the Observatorio AstrofĂsico de Javalambre (OAJ). The T80Cam is a camera with a field of view of 2 deg2 mountedon a telescopewith a diameter of 83 cm, and isequippedwith a uniquesystem of filtersspanningtheentireopticalrange (3500â10â000 Ă
). Thisfiltersystemis a combination of broad-, medium-, and narrow-band filters, optimallydesigned to extracttherest-framespectralfeatures (the 3700â4000 Ă
Balmer break region, HÎŽ, Ca H+K, the G band, and the Mg b and Ca triplets) that are key to characterizingstellartypes and delivering a low-resolutionphotospectrumforeach pixel of theobservedsky. With a typicaldepth of AB âŒ21.25 mag per band, thisfilter set thusallowsforanunbiased and accuratecharacterization of thestellarpopulation in our Galaxy, itprovidesanunprecedented 2D photospectralinformationforall resolved galaxies in the local Universe, as well as accuratephoto-z estimates (at the ÎŽâz/(1 + z)âŒ0.005â0.03 precisionlevel) formoderatelybright (up to rââŒâ20 mag) extragalacticsources. Whilesomenarrow-band filters are designedforthestudy of particular emissionfeatures ([OâŻII]/λ3727, Hα/λ6563) up to zâ<â0.017, theyalsoprovidewell-definedwindowsfortheanalysis of otheremissionlines at higherredshifts. As a result, J-PLUS has thepotential to contribute to a widerange of fields in Astrophysics, both in thenearbyUniverse (MilkyWaystructure, globular clusters, 2D IFU-likestudies, stellarpopulations of nearby and moderate-redshiftgalaxies, clusters of galaxies) and at highredshifts (emission-line galaxies at zâââ0.77,â2.2, and 4.4, quasi-stellarobjects, etc.). Withthispaper, wereleasethefirstâŒ1000 deg2 of J-PLUS data, containingabout 4.3 millionstars and 3.0 milliongalaxies at râ< â21mag. With a goal of 8500 deg2 forthe total J-PLUS footprint, thesenumbers are expected to rise to about 35 millionstars and 24 milliongalaxiesbytheend of thesurvey.Funding for the J-PLUS Project has been provided by the Governments of Spain and AragĂłn through the Fondo de Inversiones de Teruel, the Spanish Ministry of Economy and Competitiveness (MINECO; under grants AYA2017-86274-P, AYA2016-77846-P, AYA2016-77237-C3-1-P, AYA2015-66211-C2-1-P, AYA2015-66211-C2-2, AYA2012-30789, AGAUR grant SGR-661/2017, and ICTS-2009-14), and European FEDER funding (FCDD10-4E-867, FCDD13-4E-2685
NEOTROPICAL XENARTHRANS: a data set of occurrence of xenarthran species in the Neotropics
Xenarthrans â anteaters, sloths, and armadillos â have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with 24 domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos, ten anteaters, and six sloths. Our dataset includes the families Chlamyphoridae (13), Dasypodidae (7), Myrmecophagidae (3), Bradypodidae (4), and Megalonychidae (2). We have no occurrence data on Dasypus pilosus (Dasypodidae). Regarding Cyclopedidae, until recently, only one species was recognized, but new genetic studies have revealed that the group is represented by seven species. In this data-paper, we compiled a total of 42,528 records of 31 species, represented by occurrence and quantitative data, totaling 24,847 unique georeferenced records. The geographic range is from the south of the USA, Mexico, and Caribbean countries at the northern portion of the Neotropics, to its austral distribution in Argentina, Paraguay, Chile, and Uruguay. Regarding anteaters, Myrmecophaga tridactyla has the most records (n=5,941), and Cyclopes sp. has the fewest (n=240). The armadillo species with the most data is Dasypus novemcinctus (n=11,588), and the least recorded for Calyptophractus retusus (n=33). With regards to sloth species, Bradypus variegatus has the most records (n=962), and Bradypus pygmaeus has the fewest (n=12). Our main objective with Neotropical Xenarthrans is to make occurrence and quantitative data available to facilitate more ecological research, particularly if we integrate the xenarthran data with other datasets of Neotropical Series which will become available very soon (i.e. Neotropical Carnivores, Neotropical Invasive Mammals, and Neotropical Hunters and Dogs). Therefore, studies on trophic cascades, hunting pressure, habitat loss, fragmentation effects, species invasion, and climate change effects will be possible with the Neotropical Xenarthrans dataset
Histopathological, immunohistochemical, and molecular study of BHV-5 infection in the central nervous system of experimentally infected calves
Effect of the COVID-19 pandemic on surgery for indeterminate thyroid nodules (THYCOVID): a retrospective, international, multicentre, cross-sectional study
Background Since its outbreak in early 2020, the COVID-19 pandemic has diverted resources from non-urgent and elective procedures, leading to diagnosis and treatment delays, with an increased number of neoplasms at advanced stages worldwide. The aims of this study were to quantify the reduction in surgical activity for indeterminate thyroid nodules during the COVID-19 pandemic; and to evaluate whether delays in surgery led to an increased occurrence of aggressive tumours.Methods In this retrospective, international, cross-sectional study, centres were invited to participate in June 22, 2022; each centre joining the study was asked to provide data from medical records on all surgical thyroidectomies consecutively performed from Jan 1, 2019, to Dec 31, 2021. Patients with indeterminate thyroid nodules were divided into three groups according to when they underwent surgery: from Jan 1, 2019, to Feb 29, 2020 (global prepandemic phase), from March 1, 2020, to May 31, 2021 (pandemic escalation phase), and from June 1 to Dec 31, 2021 (pandemic decrease phase). The main outcomes were, for each phase, the number of surgeries for indeterminate thyroid nodules, and in patients with a postoperative diagnosis of thyroid cancers, the occurrence of tumours larger than 10 mm, extrathyroidal extension, lymph node metastases, vascular invasion, distant metastases, and tumours at high risk of structural disease recurrence. Univariate analysis was used to compare the probability of aggressive thyroid features between the first and third study phases. The study was registered on ClinicalTrials.gov, NCT05178186.Findings Data from 157 centres (n=49 countries) on 87 467 patients who underwent surgery for benign and malignant thyroid disease were collected, of whom 22 974 patients (18 052 [78 center dot 6%] female patients and 4922 [21 center dot 4%] male patients) received surgery for indeterminate thyroid nodules. We observed a significant reduction in surgery for indeterminate thyroid nodules during the pandemic escalation phase (median monthly surgeries per centre, 1 center dot 4 [IQR 0 center dot 6-3 center dot 4]) compared with the prepandemic phase (2 center dot 0 [0 center dot 9-3 center dot 7]; p<0 center dot 0001) and pandemic decrease phase (2 center dot 3 [1 center dot 0-5 center dot 0]; p<0 center dot 0001). Compared with the prepandemic phase, in the pandemic decrease phase we observed an increased occurrence of thyroid tumours larger than 10 mm (2554 [69 center dot 0%] of 3704 vs 1515 [71 center dot 5%] of 2119; OR 1 center dot 1 [95% CI 1 center dot 0-1 center dot 3]; p=0 center dot 042), lymph node metastases (343 [9 center dot 3%] vs 264 [12 center dot 5%]; OR 1 center dot 4 [1 center dot 2-1 center dot 7]; p=0 center dot 0001), and tumours at high risk of structural disease recurrence (203 [5 center dot 7%] of 3584 vs 155 [7 center dot 7%] of 2006; OR 1 center dot 4 [1 center dot 1-1 center dot 7]; p=0 center dot 0039).Interpretation Our study suggests that the reduction in surgical activity for indeterminate thyroid nodules during the COVID-19 pandemic period could have led to an increased occurrence of aggressive thyroid tumours. However, other compelling hypotheses, including increased selection of patients with aggressive malignancies during this period, should be considered. We suggest that surgery for indeterminate thyroid nodules should no longer be postponed even in future instances of pandemic escalation.Funding None.Copyright (c) 2023 Published by Elsevier Ltd. All rights reserved
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