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A Seismological Study of the Michoacán-Colima, Mexico, Earthquake of 19 September 2022 (Mw7.6)
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Singh, S. K.
; Iglesias, A.
; Arroyo, D.
; Pérez-Campos, X.
; Ordaz, M.
; Mendoza, C.
; Corona-Fernández, R. D.
; Rivera, L.
; Espíndola, V. H.
; González-Ávila, D.
; Martínez-López, R.
; Castro-Artola, O.
; Santoyo, M. A.
; Franco, S. I.
.
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Abstract Michoacán-Colima earthquake of 19 September 2022 (M s 7.6, M w7.6) ruptured the NW end of the Cocos-North American plate interface, causing severe damage to many towns and cities in the states of Michoacán and Colima. The damage was further exacerbated by a major aftershock (M w6.7) on 22 September. The mainshock initiated below the coast at a hypocentral distance of 22 km from the seismic station of Maruata (MMIG) where peak ground acceleration and velocity, PGA and PGV, of ~ 1 g and 28 cm/s were recorded. The epicenter of the major aftershock was located ~ 30 km SE of the mainshock. Finite fault modeling of the mainshock by the U.S. Geological Survey reveals a rupture propagation along the strike towards the NW and yields a static stress drop, Δσs, of 3.7 MPa. Our estimated radiated energy, E R, is 3.44×1015J, so that E R /M 0 is 1.27 × 10−5 similar to other large Mexican thrust earthquakes whose rupture areas do not extend to the trench. Aftershocks of the 2022 mainshock overlap that of the Colima earthquake of 30 January 1973 (M w7.6). Galitzin seismograms of the two earthquakes at DeBilt (DBN), The Netherlands, are reasonably similar so that they may be classified as quasi-repeated events. On the other hand, the DBN seismogram of the earthquake of 15 April 1941 (M S 7.7), whose location is poorly known but occurred in the same region, differs greatly from those of the 1973 and 2022 earthquakes, suggesting a different source area for the 1941 event. An analysis of the extensive regional recordings exhibits the effect of the directivity on the ground motion and on the ratio of ground motion during the mainshock to the major aftershock. The directivity explains the observed azimuthal dependence of PGA and PGV ratios, spectral ratios, and PGA and response spectra at 2s, Sa (T = 2 s). Because of the directivity, PGA, PGV, and Sa (T = 2 s) in the Valley of Mexico during the mainshock and the major aftershock were about the same in spite of the magnitude difference of 0.9. At CU (the reference, hard site in Mexico City), PGA and PGV during both events were ~ 6 cm/s2 and 2 cm/s, respectively, lower than expected for the mainshock and higher than expected for the aftershock.
Resumen El sismo de Michoacán-Colima el 19 de septiembre de 2022 (M s7.6, M w 7.6) rompió el límite NW de la interface entre las placas de Cocos y norteamericana, causando daño severo a muchas poblados y ciudades en los estados de Michoacán y Colima. El daño fue además agravado por una réplica de magnitud importante (M w6.7) el 22 de septiembre. El sismo principal inició debajo de la costa a una distancia hipocentral de 22 km de la estación sísmica de Maruata (MMIG) donde las aceleraciones y velocidades máximas registradas, PGA y PGV, fueron de 1g y 28 cm/s, respectivamente. El epicentro de la réplica más grande se localizó a ~30 km al SE del sismo principal. El modelado de falla finita del sismo principal presentado por el Servicio Geológico de los Estados Unidos (USGS), revela una propagación de la ruptura a lo largo del rumbo de la falla hacia la dirección NW con una caída de esfuerzos estáticos Δσs, of 3.7 MPa. Nuestra estimación de energía radiada, E R, es 3.44×1015J, de tal manera que E R /M 0 es de 1.27 × 10−5 valor similar al calculado para otros grandes sismos de subducción cuyas área de ruptura no se extienden hacia la trinchera. El área que contiene las réplicas del sismo principal de 2022 se traslapa con el área de réplicas del sismo del 30 de enero de 1973 (M w7.6). Los sismográmas Galitzin de los dos sismos registrados en la estación DeBilt (DBN) localizada en los Países Bajos son razonablemente similares de tal manera que pueden ser clasificados como eventos quasi-repetidos. Por otro lado, el sismograma DBN del sismo del 15 de abril de 1941 (M S 7.7), cuya localización no se conoce bien del todo, aunque se sabe que ocurre en la misma región, difiere sustancialmente de los sismogramas de 1972 y 2022, sugiriendo que el primero rompió un área diferente de la del sismo de 1941. Un análisis extensivo de registros regionales exhibe el efecto de directividad observada en los datos de movimientos fuertes y en los cocientes de aceleraciones del sismo principal y de las aceleraciones de la réplica mayor. La directividad explica la dependencia azimutal observada en los cocientes de PGA y PGV, los cocientes espectrales, la distribución de PGA y la respuesta espectral a 2s Sa (T = 2 s). Debido a la directividad, los valores de PGA, PGV y Sa (T = 2 s) en el Valle de México durante el sismo principal y la réplica mayor fueron muy similares a pesar de la diferencia en magnitud de 0.9. En CU (el sitio de roca firme de referencia en la Ciudad de México), PGA y PGV durante ambos eventos fueron de ~ 6 cm/s2 and 2 cm/s, respectivamente, valores más bajos que los esperados para el sismo principal y más altos que los esperados para la réplica mayor.
2.
Sedimentation and rheological behavior of reactive and non-reactive magnesium hydroxide pulps for industrial spray dryer processing
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Abstract Two different reactive concentrated magnesium hydroxide (HM) pulps, produced in a lab reactor mill, and a synthetic and non-reactive HM-pulp, for comparative analyses, have been prepared and studied. Sodium polyacrylate was selected as a dispersant for improving the HM pulp fluidity, with concentrations varying from 0.42% to 2.0% on a dry basis. The two reactive pulps differed from each other mainly by the impurity level and for both, a residual MgO amount was detected, implying that the hydration reaction could proceed. Results (with and without dispersant) confirmed the formation of particle clusters as HM concentration rose until a critical value, above which the pulp behaved as a solid. Reactive HM-pulps with high impurities may represent a limiting factor in the drying operation. Among all HM-pulps studied, the purest reactive pulp with 1% dispersant presented the best flow behavior making this reactive pulp the most suitable to be tested in a pilot spray dryer.
3.
Production of mycelial biomass, proteases and protease inhibitors by Ganoderma lucidum under different submerged fermentation conditions
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Pessoa, V. A.
; Soares, L. B. N.
; Silva, G. L.
; Vasconcelos, A. S.
; Silva, J. F.
; Fariña, J. I.
; Oliveira-Junior, S. D.
; Sales-Campos, C.
; Chevreuil, L. R.
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Abstract Ganoderma lucidum is a medicinal mushroom widely recognized as a source of biomolecules with pharmacological properties, however, little is known about the factors that influence the synthesis of bioactive proteins by this fungus when cultivated under submerged fermentation. The objective of this work was to evaluate the production of mycelial biomass and intracellular proteases and protease inhibitors by G. lucidum cultivated under different submerged fermentation conditions. The cultivation was carried out in a medium composed of glucose (10 or 20 g.L-1), soy peptone (2.5 or 5 g.L-1) and yeast extract (5 g.L-1), with incubation under agitation (120 rpm) and non-agitation, totaling 8 experimental conditions. Biomass production was determined from the dry weight, while glucose consumption was estimated by quantification of reducing sugars. The proteins were extracted in NaCl (0.15 M), and the protein extracts were submitted to protein quantification by the Bradford method, total proteolytic activity using azocasein, caseinolytic and fibrinolytic activity in Petri dishes, activity of serine (trypsin and chymotrypsin) and cysteine (papain) protease inhibitors. Cultivation in agitated condition showed higher biomass production with a maximum value of 7 g.L-1, in addition to higher activities of trypsin, chymotrypsin and papain inhibitors, with 154 IU.mg-1, 153 IU.mg-1 e 343 IU.mg-1 of protein, respectively. The non-agitated condition showed a greater potential for obtaining proteins, total proteases, caseinolytic and fibrinolytic enzymes, with maximum values of 433 mg.g-1 of extract, 71 U.mL-1 of extract, 63.62 mm2 and 50.27 mm2, respectively. Thus, a medium composed of soy peptone, yest extract and glucose in a 1:2:4 proportion is recommended, under agitation to produce protease inhibitors, and the non-agitated condition when the target is, mainly caseinolytic and fibrinolytic enzymes.
Resumo Ganoderma lucidum é um cogumelo medicinal amplamente reconhecido como fonte de biomoléculas com propriedades farmacológicas, entretanto, pouco se conhece acerca dos fatores que influenciam a síntese de proteínas bioativas por esse fungo, quando cultivado sob fermentação submersa. O objetivo deste trabalho foi avaliar a produção de biomassa micelial e de proteases e inibidores de proteases intracelulares por G. lucidum cultivado em diferentes condições de fermentação submersa. O cultivo foi realizado em meio contendo glicose (10 ou 20 g.L-1), peptona de soja (2,5 ou 5 g.L-1) e extrato de levedura (5 g.L-1), com incubação sob agitação (120 rpm) ou não-agitado, totalizando 8 condições experimentais. A produção de biomassa foi determinada a partir do peso seco e o consumo de glicose a partir da quantificação de açúcares redutores. As proteínas foram extraídas em NaCl (0,15 M) e os extratos proteicos foram submetidos à quantificação de proteínas pelo método de Bradford, atividade proteolítica total usando azocaseína, atividade caseinolítica e fibrinolítica em placa de Petri, atividade de inibidores de serino-proteases (tripsina e quimotripsina) e cisteíno-protease (papaína). O cultivo em condição agitada apresentou maior produção de biomassa com valor máximo de 7g.L-1, além de maiores atividades de inibidores de tripsina, quimotripsina e papaína, com 154 UI.mg-1, 153 UI.mg-1 e 343 UI.mg-1 de proteína, respectivamente. A condição não-agitada demonstrou maior potencial para a obtenção de proteínas, proteases totais, enzimas caseinolíticas e fibrinolíticas, com valores máximos de 433 mg.g-1 de extrato, 71 U.mL-1 de extrato, 63,62 mm2 e 50,27 mm2, respectivamente. Assim, recomenda-se o meio composto de peptona de soja, extrato de levedura e glicose na proporção 1:2:4, em condição agitada para a produção de inibidores de proteases, e a condição não-agitada para a síntese de proteases, principalmente enzimas caseinolíticas e fibrinolíticas.
4.
Induced reproduction of yellow-tailed lambari (Astyanax lacustris) with Ovopel® and buserelin acetate as alternatives to the protocol with carp pituitary extract
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Brasileiro, L. O.
; Povh, J. A.
; Spica, L. N.
; Silva, T. V.
; Stringhetta, G. R.
; Teodoro, G. C.
; Sousa, R. M.
; Fernandes, C. E.
; Campos, C. M.
; Kasai, R. Y. D.
; Teixeira, S. A.
; Côrrea-Filho, R. A. C.
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Abstract The objective of this study was to evaluate reproductive traits in adults of Astyanax lacustris subjected to different spawning inducers. The study involved 240 females (12.54 g ± 2.33 and 7.66 cm ± 0.63 cm) and 240 males (5.83 g ± 0.39 g and 6.14 cm ± 0.64 cm), all at reproductive age. Three different inducers were evaluated: (i) 0.4 pellets of Ovopel®/kg of body weight; (ii) 0.5 ml of buserelin acetate/kg of body weight; and (iii) carp pituitary extract (CPE) (5.5 mg CPE/kg body weight for females and 2.5 mg CPE/kg body weight for males), as well as saline solution (without hormone). The degree-hours for spawning were greater (P<0.05) for the Ovopel® treatment (with 204.93) than in the treatment with CPE (183.2). Ovary weight and gonadosomatic index were higher (P<0.05) in CPE and Ovopel® treatments when compared to buserelin acetate. The number of oocytes per female, absolute and relative fecundity were greater (P<0.05) for Ovopel® and CPE treatments. Fertilization rate was higher (P<0.05) in treatment with buserelin acetate (82.3%) in relation to Ovopel® (72.33%) and CPE (62.40%) treatments, and the highest (P<0.05) hatching rates were achieved with buserelin acetate and Ovopel®. The number of larvae per female body weight was greater (P<0.05) when Ovopel® was used. In conclusion, Ovopel® proves to be a more effective reproductive inducer for induced reproduction of A. lacustris when compared to CPE and buserelin acetate.
Resumo O objetivo deste estudo foi avaliar as características reprodutivas em adultos de Astyanax lacustris submetidos a diferentes indutores da desova. Foram utilizadas 240 fêmeas (12,54 g ± 2,33 e 7,66 cm ± 0,63 cm) e 240 machos (5,83 g ± 0,39 g e 6,14 cm ± 0,64 cm), todos em idade reprodutiva. Três diferentes indutores foram avaliados: (i) 0,4 pellets de Ovopel®/kg de peso corporal; (ii) 0,5 ml de acetato de buserelina/kg de peso corporal; e (iii) Extrato de Pituitária de Carpa (CPE) (5,5 mg CPE/kg de peso corporal para fêmeas e 2,5 mg de CPE/kg de peso corporal para machos) e solução salina (sem hormônio). Horas-grau para desova foi maior (P<0,05) no tratamento com Ovopel® (204,93) do que no tratamento com CPE (183,2). O peso das gônadas e o índice gonadossomático foram maiores (P<0,05) nos tratamentos com CPE e Ovopel® quando comparados ao acetato de buserelina. O número de oócitos por fêmea, a fecundidade absoluta e relativa foram maiores (P<0,05) para os tratamentos com Ovopel® e CPE. A taxa de fertilização foi maior (P<0,05) no tratamento com acetato de buserelina (82,3%) em relação aos tratamentos com Ovopel® (72,33%) e CPE (62,40%); e maior (P<0,05) taxa de eclosão foi obtida nos tratamentos com acetato de buserelina e Ovopel®. O número de larvas por peso corporal da fêmea foi maior (P<0,05) quando utilizado Ovopel®. Conclui-se que Ovopel® é um indutor reprodutivo mais eficaz para a reprodução induzida de A. lacustris quando comparado ao CPE e ao acetato de buserelina.
5.
Multidisciplinary Scientific Cruises for Environmental Characterization in the Santos Basin – Methods and Sampling Design
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Moreira, Daniel L.
; Dalto, Adriana G.
; Figueiredo JR, Alberto G.
; Valerio, Aline M.
; Detoni, Amalia M. S.
; Bonecker, Ana C. T.
; Signori, Camila N.
; Namiki, Cláudia
; Sasaki, Dalton K.
; Pupo, Daniel V.
; Silva, Danilo A.
; Kutner, Deborah S.
; Duque-Castaño, Diana C.
; Marcon, Eduardo H.
; Gallotta, Fabiana D. C.
; Paula, Fabiana S.
; Gallucci, Fabiane
; Roque, Gabriela C. F.
; Campos, Giulia S.
; Fonseca, Gustavo
; Mattos, Gustavo
; Lavrado, Helena P.
; Silveira, Ilson C. A. da
; Costa, Jessica O.
; Santos Filho, João R. dos
; Carneiro, Juliane C.
; Moreira, Julio C.F.
; Rozo, Laura
; Araujo, Leandro F.M.
; Lazzari, Letícia
; Silva, Letícia O. da
; Michelazzo, Luan S.
; Fernandes, Luciano F.
; Dottori, Marcelo
; Araújo Jr., Marcus A. G. de
; Chuqui, Mateus G.
; Ceccopieri, Milena
; Borges-Silva, Milton
; Kampel, Milton
; Bergo, Natascha M.
; Silva, Paulo V. M.
; Tura, Pedro M.
; Moura, Rafael B. de
; Romano, Renato G.
; Martins, Renato P.
; Carreira, Renato S.
; Toledo, Rodrigo G.A.
; Bonecker, Sérgio L.C.
; Disaró, Sibelle T.
; Rodrigues, Silvana V.
; Corbisier, Thais N.
; Vicente, Thaisa M.
; Paiva, Vitor G. de
; Pellizari, Vivian H.
; Belo, Wellington C.
; Brandini, Frederico P.
; Sousa, Silvia H.M
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Abstract The Santos Basin (SB) is the main petroliferous basin in the Brazilian continental margin and one of the most studied marine areas in Brazil. However, historical data suggest that new efforts should be carried out to acquire quantitative biological data, especially in the deep sea, to establish the baseline of essential ocean variables in different ecosystems for future monitoring programs. The Brazilian energy company Petrobras planned and executed 24 oceanographic cruises over a period of 2 years to assess the benthic (SANSED cruise) and pelagic (SANAGU cruise) systems of the SB (356 days at sea in 2019 and 2021/2022). These efforts were part of the Santos Project, which comprised a comprehensive environmental study aimed at investigating benthic and pelagic variables to characterize ecology, biogeochemistry, thermohaline properties of water masses, and ocean circulation patterns, geomorphology, and sedimentology, as well as organic and inorganic chemistry. Here we present the detailed sampling designs and the field methods employed on board, during the SB scientific cruises. All sampling protocols were based on standardized approaches. For the benthos analyses, triplicate sediment samples were performed using a GOMEX-type box corer (0.25 m²) or a large modified Van Veen grab (0.75 m²) at 100 stations ranging from 25 to 2400 m depth. At each station, 25 geochemical and physico-chemical parameters were analyzed in addition to micro-, meio-, and macrofauna and living foraminifera samples. For the pelagic system, 60 stations were selected to investigate the plankton community, ranging in size from pico- to macroplankton, through vertical, horizontal, and oblique net hauls (20, 200, and 500 μm mesh size), as well as 25 biogeochemical parameters collected with an aid of a CTD-rosette sampler. Part of this scientific information also serves the Regional Environmental Characterization Project (PCR-BS) in support of Petrobras’ Santos Basin drilling licensing process led by the Brazilian Environmental Agency – IBAMA. This project contributes to the sustainable development of the SB, in line with the guidelines of the United Nations Decade of Ocean Science for Sustainable Development.
6.
Feeding aspects of Knodus heteresthes (Eigenmann, 1908) and Moenkhausia lepidura (Kner, 1858) (Characiformes, Characidae) in the Teles Pires and Juruena Rivers, southern Amazon
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Oliveira, E.
; Ignácio, A. R. A.
; Lázaro, W. L.
; Muniz, C. C.
; Campos, D. V. S.
; Costa, J. V. M.
; Ribeiro, T.
; Santos-Filho, M.
.
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Resumo Foram avaliadas a composição da dieta de duas espécies de Characideos (Knodus heteresthes e Moenkhausia lepidura) nos rios Teles Pires e Juruena, amostrados em setembro e outubro de 2016. Analisamos 226 estômagos de K. heteresthes e 425 de M. lepidura, sendo utilizados os métodos volumétrico e frequência de ocorrência, aplicando-se o índice de importância alimentar. Para a similaridade das dietas entre as espécies calculamos a sobreposição de nicho com índice de Pianka. Ambas as espécies no rio Juruena têm preferência alimentar por artrópodes (IAi > 0,95), no rio Teles Pires a dieta concentra-se em três fontes para ambas espécies: artrópodes (IAi > 0,52), vegetais (IAi > 0,33) e peixes (IAi > 0,12). A dieta é dissimilar quando comparados os ambientes (ANOSIM, R ≥ 0,57; p < 0,001), com alta sobreposição de nicho trófico (α > 0,97), independente do ambiente amostrado. No rio Teles Pires, ambas as espécies foram classificadas como onívoras com tendência insetívora e no rio Juruena ocorre o comportamento insetívoro.
Abstract The composition of the diet of two species of characids (Knodus heteresthes and Moenkhausia lepidura) was evaluated in the Teles Pires and Juruena Rivers, sampled in September and October 2016. We analyzed 226 stomachs of K. heteresthes and 425 of M. lepidura. The analysis of the stomach contents was based on volumetric and frequency of occurrence methods, applying the food importance index. For the similarity of the diets between the species we calculated the niche overlap with Pianka’s index. Both species in the Juruena River have a dietary preference for arthropods (IAi > 0.95). In the Teles Pires River the diet is concentrated in three sources for both species: arthropods (IAi > 0.52), vegetables (IAi > 0.33) and fish (IAi > 0.12). The diet was dissimilar when compared to environments (ANOSIM, R ≥ 0.57, p < 0.001) with high trophic niche overlap (α > 0.97), regardless of the sampled environment. In the Teles Pires River, both species were classified as omnivorous with an insectivorous tendency and in the Juruena River the insectivorous behaviour occurs.
https://doi.org/10.1590/1519-6984.226136
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7.
Persistent symptoms and decreased health-related quality of life after symptomatic pediatric COVID-19: A prospective study in a Latin American tertiary hospital
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Fink, Thais T.
; Marques, Heloisa H.S.
; Gualano, Bruno
; Lindoso, Livia
; Bain, Vera
; Astley, Camilla
; Martins, Fernanda
; Matheus, Denise
; Matsuo, Olivia M.
; Suguita, Priscila
; Trindade, Vitor
; Paula, Camila S.Y.
; Farhat, Sylvia C.L.
; Palmeira, Patricia
; Leal, Gabriela N.
; Suzuki, Lisa
; Odone Filho, Vicente
; Carneiro-Sampaio, Magda
; Duarte, Alberto José S.
; Antonangelo, Leila
; Batisttella, Linamara R.
; Polanczyk, Guilherme V.
; Pereira, Rosa Maria R.
; Carvalho, Carlos Roberto R.
; Buchpiguel, Carlos A.
; Latronico, Ana Claudia
; Seelaender, Marilia
; Silva, Clovis Artur
; Pereira, Maria Fernanda B.
; Sallum, Adriana M. E.
; Brentani, Alexandra V. M.
; Neto, Álvaro José S.
; Ihara, Amanda
; Santos, Andrea R.
; Canton, Ana Pinheiro M.
; Watanabe, Andreia
; Santos, Angélica C. dos
; Pastorino, Antonio C.
; Franco, Bernadette D. G. M.
; Caruzo, Bruna
; Ceneviva, Carina
; Martins, Carolina C. M. F.
; Prado, Danilo
; Abellan, Deipara M.
; Benatti, Fabiana B.
; Smaria, Fabiana
; Gonçalves, Fernanda T.
; Penteado, Fernando D.
; Castro, Gabriela S. F. de
; Gonçalves, Guilherme S.
; Roschel, Hamilton
; Disi, Ilana R.
; Marques, Isabela G.
; Castro, Inar A.
; Buscatti, Izabel M.
; Faiad, Jaline Z.
; Fiamoncini, Jarlei
; Rodrigues, Joaquim C.
; Carneiro, Jorge D. A.
; Paz, Jose A.
; Ferreira, Juliana C.
; Ferreira, Juliana C. O.
; Silva, Katia R.
; Bastos, Karina L. M.
; Kozu, Katia
; Cristofani, Lilian M.
; Souza, Lucas V. B.
; Campos, Lucia M. A.
; Silva Filho, Luiz Vicente R. F.
; Sapienza, Marcelo T.
; Lima, Marcos S.
; Garanito, Marlene P.
; Santos, Márcia F. A.
; Dorna, Mayra B.
; Aikawa, Nadia E.
; Litvinov, Nadia
; Sakita, Neusa K.
; Gaiolla, Paula V. V.
; Pasqualucci, Paula
; Toma, Ricardo K.
; Correa-Silva, Simone
; Sieczkowska, Sofia M.
; Imamura, Marta
; Forsait, Silvana
; Santos, Vera A.
; Zheng, Yingying
.
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OBJECTIVES: To prospectively evaluate demographic, anthropometric and health-related quality of life (HRQoL) in pediatric patients with laboratory-confirmed coronavirus disease 2019 (COVID-19) METHODS: This was a longitudinal observational study of surviving pediatric post-COVID-19 patients (n=53) and pediatric subjects without laboratory-confirmed COVID-19 included as controls (n=52) was performed. RESULTS: The median duration between COVID-19 diagnosis (n=53) and follow-up was 4.4 months (0.8-10.7). Twenty-three of 53 (43%) patients reported at least one persistent symptom at the longitudinal follow-up visit and 12/53 (23%) had long COVID-19, with at least one symptom lasting for >12 weeks. The most frequently reported symptoms at the longitudinal follow-up visit were headache (19%), severe recurrent headache (9%), tiredness (9%), dyspnea (8%), and concentration difficulty (4%). At the longitudinal follow-up visit, the frequencies of anemia (11% versus 0%, p=0.030), lymphopenia (42% versus 18%, p=0.020), C-reactive protein level of >30 mg/L (35% versus 0%, p=0.0001), and D-dimer level of >1000 ng/mL (43% versus 6%, p=0.0004) significantly reduced compared with baseline values. Chest X-ray abnormalities (11% versus 2%, p=0.178) and cardiac alterations on echocardiogram (33% versus 22%, p=0.462) were similar at both visits. Comparison of characteristic data between patients with COVID-19 at the longitudinal follow-up visit and controls showed similar age (p=0.962), proportion of male sex (p=0.907), ethnicity (p=0.566), family minimum monthly wage (p=0.664), body mass index (p=0.601), and pediatric pre-existing chronic conditions (p=1.000). The Pediatric Quality of Live Inventory 4.0 scores, median physical score (69 [0-100] versus 81 [34-100], p=0.012), and school score (60 [15-100] versus 70 [15-95], p=0.028) were significantly lower in pediatric patients with COVID-19 at the longitudinal follow-up visit than in controls. CONCLUSIONS: Pediatric patients with COVID-19 showed a longitudinal impact on HRQoL parameters, particularly in physical/school domains, reinforcing the need for a prospective multidisciplinary approach for these patients. These data highlight the importance of closer monitoring of children and adolescents by the clinical team after COVID-19.
8.
Poor Sleep quality and health-related quality of life impact in adolescents with and without chronic immunosuppressive conditions during COVID-19 quarantine
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Helito, Alberto C.
; Lindoso, Livia
; Sieczkowska, Sofia M.
; Astley, Camilla
; Queiroz, Ligia B.
; Rose, Natalia
; Santos, Claudia Renata P.
; Bolzan, Thalis
; Peralta, Rita María I.A.
; Franco, Ruth R.
; Cominato, Louise
; Pereira, Rosa Maria R.
; Tannuri, Uenis
; Campos, Lucia Maria A.
; Lourenço, Benito
; Toma, Ricardo K.
; Medeiros, Karina
; Watanabe, Andréia
; Grangeiro, Patricia Moreno
; Farhat, Sylvia C.
; Casella, Caio B.
; Polanczyk, Guilherme V.
; Gualano, Bruno
; Silva, Clovis A.
; Sallum, Adriana M. E.
; Iraha, Amanda Y.
; Ihara, Bianca P.
; Mazzolani, Bruna C.
; Martinez, Claudia A.
; Strabelli, Claudia A. A.
; Fonseca, Claudia B.
; Lima, Dandara C. C.
; Setoue, Debora N. D.
; Roz, Deborah F. P.
; Smaira, Fabiana I.
; Roschel, Hamilton
; Miyatani, Helena T.
; Marques, Isabela G.
; Oba, Jane
; Ferreira, Juliana C. O.
; Simon, Juliana R.
; Kozu, Katia
; Saccani, Ligia P.
; Martiniano, Lorena V. M.
; Miranda, Luana C. A.
; Silva, Luiz E. V.
; Laurentino, Moisés F.
; Aikawa, Nadia E.
; Sakita, Neusa K.
; Tanigava, Nicolas Y.
; Pereira, Paulo R. A.
; Palmeira, Patrícia
; Angelo, Simone S.
; Lavorato, Sofia S. M.
; Bernardes, Tamires M.
; Franco, Tathiane C.
; Viana, Vivianne S. L.
; Barros, Vera P. M. F. R.
; Zheng, Yingying
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OBJECTIVE: To assess the possible factors that influence sleep quality in adolescents with and without chronic immunosuppressive conditions quarantined during the coronavirus disease 2019 (COVID-19) pandemic. METHODS: This cross-sectional study included 305 adolescents with chronic immunocompromised conditions and 82 healthy adolescents. Online surveys were completed, which included questions on socio-demographic data and self-rated healthcare routine during COVID-19 quarantine and the following validated questionnaires: the Pittsburgh Sleep Quality Index (PSQI), Pediatric Quality of Life Inventory 4.0 (PedsQL4.0), and Pediatric Outcome Data Collection Instrument (PODCI). RESULTS: The median current age [14 (10-18) vs. 15 (10-18) years, p=0.847] and frequency of female sex (62% vs. 58%, p=0.571) were similar in adolescents with chronic conditions compared with healthy adolescents. The frequency of poor sleep quality was similar in both groups (38% vs. 48%, p=0.118). Logistic regression analysis, including both healthy adolescents and adolescents with chronic conditions (n=387), demonstrated that self-reported increase in screen time (odds ratio [OR] 3.0; 95% confidence interval [CI] 1.3-6.8; p=0.008) and intrafamilial violence report (OR 2.1; 95% CI 1.2-3.5; p=0.008) were independently associated with poor sleep quality in these adolescents. However, the PODCI global function score was associated with a lower OR for poor sleep quality (OR 0.97; 95% CI 0.94-0.99; p=0.001). Further logistic regression, including only adolescents with chronic conditions (n=305), demonstrated that self-reported increase in screen time (OR 3.1; 95% CI 1.4-6.8; p=0.006) and intrafamilial violence report (OR 2.0; 95% CI 1.2-3.4; p=0.011) remained independently associated with poor quality of sleep, whereas a lower PODCI global function score was associated with a lower OR for sleep quality (OR 0.96; 95% CI 0.94-0.98; p<0.001). CONCLUSION: Self-reported increases in screen time and intrafamilial violence report impacted sleep quality in both healthy adolescents and those with chronic conditions. Decreased health-related quality of life was observed in adolescents with poor sleep quality.
9.
PERSPECTIVAS DE MERCADO E DESAFIOS DA PRODUÇÃO DO ÁCIDO ITACÔNICO A PARTIR DE BIOMASSA
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Fraga, Gabrielle das V.
; Ruy, Alisson D. S.
; Pontes, Luiz A. M.
; Campos, Leila M. A.
; Teixeira, Leonardo S. G.
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Itaconic acid (IA) is a very promising platform molecule due to the possibility of it being used to obtain products such as methyl methacrylate and synthetic latex, with the prospect that its global market will grow at an average annual rate of 2.8% (CAGR) from 2021 to 2026, exceeding US$ 116.6 million in sales. The main technological route used to obtain itaconic acid is fermentation using different strains of Aspergillus terreus fungi. The main advancements are related to genetic engineering, as Aspergillus terreus is the most tolerant of the microorganisms employed in the process synthesis and optimization. The main substrate used is glucose (52%), followed by glycerol (25%). Among the results presented in this paper, the best production was achieved using Ustilago maydis, with 220 g L-1 of IA, yielding 0.33 g g-1, using glucose as a carbon source. Moreover, it is necessary to continue optimizing the biological process of IA production, since it is a platform molecule with major economic potential.
https://doi.org/10.21577/0100-4042.20170573
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10.
Avaliação do potencial antioxidante frente à oxidação lipídica e da toxicidade preliminar do extrato e frações obtidas das frondes de Dicksonia sellowiana (Presl.) Hook
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OLIVEIRA, V. B.
; ZUCHETTO, M.
; PAULA, C. S.
; VERDAM, M. C. S.
; CAMPOS, R.
; DUARTE, A. F. S.
; MIGUEL, M. D.
; MIGUEL, O. G.
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Revista Brasileira de Plantas Medicinais
- Métricas do periódico
RESUMOA espécie Dicksonia sellowiana, conhecida popularmente como xaxim, é uma samambaia natural do continente americano e encontrada no Brasil na Mata Atlântica. Em 2001 foi inserida na lista do IBAMA como espécie ameaçada de extinção em decorrência da exploração para a confecção de vasos para a jardinagem. O presente trabalho descreve o potencial antioxidante lipídico (TBARS e Sistema β-caroteno/ácido linoleico) do extrato bruto e frações obtidos através de aparato de Soxhlet de frondes de Dicksonia sellowiana, além da atividade citotóxica e hemolítica in vitro. Pelo método TBARS, todas as amostras testadas apresentaram atividade, destacando a fração acetato de etila e extrato bruto cuja atividade foi comparável ao padrão ácido ascórbico. No sistema β-caroteno/ácido linoleico, a fração acetato de etila e extrato bruto apresentaram inibição da oxidação do ácido linoleico, destaque para a fração acetato de etila que não se diferenciou estatisticamente do padrão BHT. Na avaliação da toxicidade preliminar, não fora observado atividade citotóxica e hemolítica do extrato bruto e frações nos modelos testados. Os resultados demonstram o potencial antioxidante da espécie vegetal nos modelos de inibição da oxidação lipídica sem apresentar toxicidade.
ABSTRACTThe species Dicksonia sellowiana, popularly known as tree fern, are a natural fern from American continent found in the Atlantic Forest in Brazil. In 2001 it was added to the list of IBAMA as endangered species due to its exploitation for pots craft for gardening species. This paper describes the antioxidant lipid potential (TBARS and System β-carotene / linoleic acid) of the crude extract and fractions obtained by Soxhlet apparatus of Dicksonia sellowianafronds, besides the cytotoxic and hemolytic activity in vitro. By the TBARS method, all samples tested showed activity, particularly the fraction ethyl acetate and the crude extract whose activity was comparable to standard ascorbic acid. In the system β-carotene / linoleic acid, the fraction of ethyl acetate and crude extract inhibited the oxidation of linoleic acid, especially the ethyl acetate fraction which did not differ statistically from the standard BHT. In a preliminary assessment of toxicity,cytotoxic and hemolytic activity of crude extracts and fractions in the tested models were not observed. The results of this study indicate the antioxidant potential of this plant species in models of inhibiting lipid oxidation without producing toxicity.
https://doi.org/10.1590/1983-084X/14_071
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11.
Inflammation and circulating endothelial progenitor cells in patients with coronary artery disease and residual platelet reactivity
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Pesaro, Antonio Eduardo P.
; Serrano Jr, Carlos V.
; Katz, Marcelo
; Campos, Alexandre H.
; Lopes, Renato D.
; Marti, Luciana C.
; Martins, Herlon S.
; Sunahara, Rodrigo S.
; Maranhão, Raul C.
; Nicolau, José C.
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https://doi.org/10.6061/clinics/2012(09)21
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12.
Structure effects on the optical properties of thin (PbLa)TiO3 films
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Carreño, N. L. V.
; Rangel, J. H. G.
; Pinheiro, C. D.
; Longo, E.
; Leite, E. R.
; Varela, J. A.
; Campos, C. E. M.
; Pisani, P. S.
.
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Amorphous thin films of Pb1-xLaxTiO3 (with x=0, 13 and 27 mol %) were prepared by the polymeric precursor method and deposited by spin coating on glass substrates. The films were characterized by X-ray diffraction (XDR) and scanning electron microscopy (SEM) and the band gap energy of the amorphous PLT films was calculated from the UV-VIS spectra. The obtained values were compared to that theoretically calculated. The observed decrease of the band gap was attributed to increased density of defects in the amorphous structure. Futhermore photoluminescence (PL) at room temperature was observed for thin (PbLa)TiO3 films.
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13.
Potentiometric and conductometric studies on the system acid-isopolytungstate and the formation of lanthanum tungstates
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A estequiometria de poliânions formados pela ação do ácido nítrico sobre a solução de tungstato de sódio (< 0,01M) foi estudada por meio de técnicas eletrométricas envolvendo titulações potenciométricas e condutométricas. As inflexões e degraus bem definidas nas curvas de titulações forneceram evidências convincentes pela existência de poliânions, para-W12O41(10-) e meta-W12O39(6-) nas faixas do pH 5,7-6,0 e 3,6-4,1; correspondendo a razão H+:WO4(2-) como 7:6 e 9:6, respectivamente. A interação entre soluções de nitrato de lantânio e tungstato de sódio a específicos níveis de pH 8,0; 5,9 e 4,0 também foi estudada por titulações potenciométricas e condutométricas, nos meios aquoso e etanólico, com cada reagente usado alternadamente como titulante. Os experimentos eletrométricos forneceram evidências incontestáveis sobre a formação de tungstatos normal-La2O3.3WO3, para-5La2O3.36WO3 e meta-La2O3.12WO3 nas proximidades de valores de pH 6,3; 5,0 e 4,2; respectivamente. Investigações analíticas sobre os precipitados formados confirmam os resultados do estudo eletrométrico.
The stoichiometry of the polyanions formed by the action of nitric acid on sodium tungstate (< 0.01M) has been studied by means of electrometric techniques involving pH-potentiometric and conductometric titrations. The well defined inflections and breaks in the titration curves provide evidence for the existence of the polyanions, para-W12O41(10-) and meta-W12O39(6-) corresponding to the ratio of H+:WO4(2-) as 7:6 and 9:6 in the pH ranges 5.7-6.0 and 3.6-4.1, respectively. The interaction of lanthanum nitrate with sodium tungstate solutions, at specific pH levels 8.0, 5.9 and 4.0 was also studied by pH and conductometric titrations, in aqueous and alcoholic media, with each of the reagents alternatively used as titrant. The electrometric experiments provide definite evidence of the formation of normal-La2O3.3WO3, para-5La2O3.36WO3 and meta-La2O3.12WO3 tungstates in the vicinity of pH 6.3, 5.0 and 4.2, respectively. Analytical investigations on the precipitates formed confirm the results of the electrometric study.
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14.
Monitoramento atmosférico passivo de SO2, NO2 e O3 em áreas urbanas e de influência industrial como prática de química ambiental para alunos de graduação
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Campos, Vânia P.
; Cruz, Lícia P. S.
; Alves, Eagles M.
; Santos, Tatiane de S.
; Silva, Adriano D.
; Santos, Ana C. C. dos
; Lima, Angelo M. V.
; Paixão, Carine S.
; Santos, Daniele C. M. B.
; Brandão, Denise S.
; Andrade, Elisângela J. S.
; Moreira Jr., José I.
; Conceição, Karla C. S.
; Ramos, Márcia de S.
; Pontes, Maria C. G.
; Amaral, Misael F. do
; Mattos, Rosiene R.
.
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This study is a result of undergraduate student participation in the Environmental Chemistry discipline provided by the Chemistry Institute/UFBA. The students were involved in the development of passive samplers, a project of the LAQUAM (Environmental Analytical Chemistry Laboratory). The students' residences and other neighborhoods were used to create a passive sampling network, allowing the measurement of atmospheric levels of pollutants in urban areas and in those under industrial influence. The assembly of the passive samplers, including impregnation of filters and chemical analysis were part of the students' practice tasks. The results were analyzed taking into consideration the Brazilian legislation.
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15.
Resúmenes
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Abad, P.
; Abreu, P.
; Acencio, N.
; Acevedo, S.
; Acevedo, V.
; Agohn, R.
; Albornoz, L.
; Alvarez, P.
; Arana, C.
; Arango, A.
; Arango, J. J.
; Arbeláez, A.
; Arbeláez, L. E.
; Arboleda, W.
; Arenas, A.
; Arenas, I. C.
; Arias, M. L.
; Aristizábal, A.
; Aristizábal, D.
; Arrieta, E.
; Arrieta, M.
; Arroyave, H.
; Arroyo, J. A.
; Arteaga, F.
; Ascione, G.
; Asenjo, R.
; Astudillo, B.
; Atehortúa, L. H.
; Badel, A.
; Badiel, M.
; Balestrini, S.
; Barragán, R.
; Barrera, C.
; Barrera, J. C.
; Barrera, J. G.
; Benítez, L. M.
; Bermúdez, M. J.
; Bernal, O.
; Betancourt, J.
; Betancourt, J.
; Blanco, G.
; Bohórquez, R.
; Bravo, D.
; Bresciani, R.
; Builes, A.
; Buitrago, L
; Burgoa, A.
; Báez, L. P.
; Cabrales, J.
; Cabrales, M.
; Cabrera, C.
; Cadavid, A. M.
; Cadavid, E.
; Cadena, R.
; Caicedo, L. C.
; Caicedo, V.
; Calderón, J.
; Calderón, L. I.
; Camacho, J.
; Camacho, P.
; Camacho, P. A.
; Camargo, D. M.
; Campos, M. T.
; Campuzano, G.
; Capasso, A.
; Cardona, H.
; Cardona, J.
; Carreño, A.
; Carreño, M.
; Carrillo, G.
; Casariego, G.
; Cassalett, G.
; Castellanos, H.
; Castillo, M.
; Castillo, V.
; Castro, H.
; Castro, J.
; Castro, P.
; Cañas, E.
; Celis, A.
; Celis, L. A.
; Chávez, A.
; Chávez, J. C.
; Colorado, A.
; Contreras, E.
; Coral, A.
; Coronado, M.
; Correa, J. R.
; Corredor, S.
; Corzo, L.
; Corzo, O.
; Cotes, J. M.
; Cruz, A.
; Cubides, C.
; Cuellar, F.
; Cuervo, A.
; Cárdenas, A.
; Cárdenas, M.
; Cárdenas, M. E.
; Cárdenas, P. E.
; Cárdenas, W.
; De Viveros, C.
; Delgadillo, A.
; Delgado, J.
; Delgado, P.
; Donado, B. P.
; Donado, J. R.
; Duarte, E.
; Dueñas, R.
; Duque, J. G.
; Duque, M.
; Durango, L.
; Durán, A. E.
; Durán, M. A.
; Dávila, L. M.
; Díaz, A.
; Díaz, A. L.
; Díaz, C.
; Díaz, G.
; Díaz, L.
; Díaz, L. A.
; Díaz, L. H.
; Díaz, L.
; Díaz, M.
; Díaz, S.
; Díaz, V
; Echavarría, J.
; Echeverri, D.
; Echeverri, M.
; Echeverría, L.
; Echeverría, R.
; Erdmenger, J.
; Escobar, A.
; Escobar, C.
; Escobar, E.
; Escorcia, E.
; Espinosa, A.
; Espíndola, R.
; Estrada, G.
; Estrada, J.
; Estupiñán, A. M.
; Eusse, C.
; Fernández, A.
; Fernández, D.
; Fernández, H.
; Fernández, N.
; Fernández, O.
; Fernández, R.
; Flórez, M.
; Fontanilla, M. R.
; Fragozo, C. A.
; Franco, C.
; Franco, G.
; Franco, H. J.
; Franco, J.
; Franco, S.
; Gallo, J.
; Garcés, J.
; García, E.
; García, L.
; Garzón, M. E.
; Gaviria, A.
; Gil, E.
; Giraldo, D.
; Giraldo, J. A.
; Giraldo, JC.
; Giraldo, N.
; Gomesese, O. F.
; González, G.
; González, M.
; González, R.
; Gordillo, M.
; Guanes, R.
; Guerra, P.
; Guerrero, L.
; Guitérrez, L.
; Gulh, F.
; Gutiérrez, J.
; Gutiérrez, M.
; Guyatt, G.
; Guzmán, L.
; Guzmán, N.
; Gárces, J.
; Gómez, A.
; Gómez, C. A.
; Gómez, F.
; Gómez, G.
; Gómez, G. S.
; Gómez, J.
; Gómez, J. F.
; Gómez, M.
; Gómez, P. F.
; Hernández, A.
; Hernández, C.
; Hernández, E.
; Hernández, G.
; Hernández, H.
; Hernández, L.
; Hernández, N.
; Herrera, V. M.
; Hoyos, A.
; Hurtado, E. F.
; Ibarra, P.
; Indaburu, D.
; Iragorri, A.
; Isaza, D.
; Jaimes, F.
; Jaimes, G.
; Jaramillo, C.
; Jaramillo, C. J.
; Jaramillo, G.
; Jaramillo, J.
; Jaramillo, J. C.
; Jaramillo, J. S.
; Jaramillo, M.
; Jaramillo, M. H.
; Jaramillo, N.
; Jaramillo, R.
; Jiménes, M.
; Jiménez, C.
; Jiménez, L.
; Jiménez, L. S.
; Jiménez, M.
; Jurado, A.
; Jurado, A. F.
; Lemus, J.
; Leyes, R.
; León, J.
; Lince, R.
; Lizarazo, J.
; Lizcano, F.
; Llamas, A.
; Llano, J. F.
; Lombo, B.
; Lozano, M.
; Luengas, C.
; Lugo, L. H.
; López, F.
; López, M.
; López, P.
; Malabet, I.
; Maldonado, J.
; Manrique, E. J.
; Manrique, F.
; Mantilla, G.
; Manzi, E.
; Martínez, H.
; Martínez, J. P.
; Martínez, L. X.
; Martínez, M. P.
; Marín, J.
; Mateus, L.
; Matías, N.
; Mayorga, A.
; Medina, A.
; Medina, E.
; Medina, H.
; Mejía,
; Mejía, A.
; Mejía, D.
; Mejía, I.
; Mendoza, S.
; Merchán, A.
; Merlano, S.
; Miranda, A.
; Molina, C.
; Montenegro, J.
; Montero, A.
; Montero, G.
; Montero, G. A.
; Montes, F.
; Montoya, E.
; Montoya, J. D.
; Montoya, L. M.
; Montoya, M.
; Moreno, E.
; Morillo, C.
; Morillo, C. A.
; Morris, R.
; Mosquera, W.
; Moya, L.
; Murgueitio, R.
; Muñoz, A.
; Mármol, J. A.
; Márquez, A.
; Múnera, A.
; Nader, C.
; Navas, C. M.
; Navia, J. J.
; Negrete, A.
; Niño, M. E.
; Náder, C. A.
; Núñez, F.
; Ochoa, J.
; Olaya, C.
; Olaya, L.
; Orjuela, A.
; Orjuela, H.
; Orozco, J. L.
; Orrego, C. M.
; Ortiz, C.
; Ortiz, S. D.
; Osorio, E.
; Ospina, C. A.
; Oviedo, M.
; Oñate, R.
; Pabón, L. M.
; Palomino, G.
; Pardo, C.
; Pardo, R.
; Parra, G. A.
; Parra, J. C.
; Parra, L. E.
; Parra, T.
; Patarroyo, M.
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Glossário e ajuda para busca
Você pode enriquecer sua busca de uma forma muito simples. Use os índices de pesquisa combinados com os conectores (AND ou OR) e especifique cada vez mais sua busca.
Por exemplo, se você deseja buscar artigos sobre
casos de dengue no Brasil em 2015, use:ti:dengue and publication_year:2015 and aff_country:Brasil
Veja abaixo a lista completa de índices de pesquisa que podem ser usados:
Cód. do Índice | Elemento |
---|---|
ti | título do artigo |
au | autor |
kw | palavras-chave do artigo |
subject | assunto (palavras do título, resumo e palavras-chave) |
ab | resumo |
ta | título abreviado da revista (ex. Cad. Saúde Pública) |
journal_title | título completo da revista (ex. Cadernos de Saúde Pública) |
la | código do idioma da publicação (ex. pt - Português, es - Espanhol) |
type | tipo do documento |
pid | identificador da publicação |
publication_year | ano de publicação do artigo |
sponsor | financiador |
aff_country | código do país de afiliação do autor |
aff_institution | instituição de afiliação do autor |
volume | volume do artigo |
issue | número do artigo |
elocation | elocation |
doi | número DOI |
issn | ISSN da revista |
in | código da coleção SciELO (ex. scl - Brasil, col - Colômbia) |
use_license | código da licença de uso do artigo |