Pesquisa | SciELO

Resumen Se amplía el conocimiento sobre la distribución geográfica de Aedes patersoni Shanon y Del Ponte, Ae. scapularis (Rondani), Culex dolosus (Lynch Arribálzaga), Mansonia indubitans Dyar y Shannon, Psorophora cingulata (Fabricius), Toxorhynchites haemorrhoidalis separatus (Lynch Arribálzaga), Tx. purpureus (Theobald), Tx. theobaldi s. l. Dyar & Knab y Uranotaenia lowii Theobald en el Noroeste de Argentina. Asimismo, brindan las primeras localidades conocidas para Ma. indubitans en la provincia de Salta y para Ae. serratus (Theobald), Ma. titillans (Walker) y Ps. ciliata (Fabricius) en la provincia de Jujuy. Se discute sobre la presencia de Ae. fulvithorax (Lutz) en la provincia de Salta, de Ps. pallescens Edwards en la provincia de Jujuy, de Ur. pulcherrima Lynch Arribálzaga en Santiago del Estero y de Anopheles pictipennis (Philippi) en Argentina. Esta contribución actualiza la lista de mosquitos para las provincias del noroeste argentino, incrementando su número en Jujuy, La Rioja, Salta, Santiago del Estero y Tucumán a 68, 26, 102, 29 y 70 especies, respectivamente. Adicionalmente, se aporta información sobre el hábitat en el que se recolectaron y la importancia sanitaria de las especies mencionadas, así como una lista completa de las especies presentes en las provincias del noroeste argentino.

Abstract The knowledge about the geographical distribution of Aedes patersoni Shanon and Del Ponte, Ae. scapularis (Rondani), Culex dolosus (Lynch Arribálzaga), Mansonia indubitans Dyar and Shannon, Psorophora cingulata (Fabricius), Toxorhynchites haemorrhoidalis separatus (Lynch Arribálzaga), Tx. purpureus (Theobald), Tx. theobaldi s. l. Dyar & Knab and Uranotaenia lowii Theobald in the Northwest of Argentina is extended. Likewise, they provided the first known localities for Ma. indubitans in the province of Salta and for Ae. serratus (Theobald), Ma. titillans (Walker) and Ps. ciliata (Fabricius) in the province of Jujuy. The presence of Ae. fulvithorax (Lutz), Ps. pallescens Edwards in Jujuy, Ur. pulcherrima Lynch Arribálzaga in Santiago del Estero and Anopheles pictipennis (Philippi) in Argentina, is discussed. This contribution updates the list of mosquitoes for the northwestern provinces of Argentina, increasing their numbers of species in Jujuy, La Rioja, Salta, Santiago del Estero and Tucumán to 68, 26, 102, 29 and 70 species, respectively. Additionally, information on the habitat of immature stages and the sanitary importance of the species mentioned is provided, as well as a complete list of the species present in the northwestern provinces of Argentina.

Identifying agroecological transition pathways based on the Global Approach to Agricultural Systems: the case of family livestock farmers in northern Uruguay
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Ferreira Rivaben, I.

; Rossi, V.

; Figari, M.

; Chia, E.

Agrociencia Uruguay

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2023, Volume 27 elocation e1069

Resumo: Es En Pt | Texto: Es En Pt | PDF: Es | PDF: En | PDF: Pt

Resumen: La agroecología representa una de las principales alternativas a modos de producción generados por la revolución verde, tanto en Uruguay como en otros países. Aparece como una respuesta al cambio climático, a la gestión de la biodiversidad y a la restauración de los recursos naturales; y más recientemente como respuesta a la crisis de la pandemia COVID-19. En Uruguay la agroecología, a pesar de que existe una Ley de Plan Nacional para el Fomento de la Producción con Bases Agroecológicas desde 2018, es marginal y la investigación sobre procesos de transición agroecológica es muy incipiente. El objetivo de este trabajo es identificar prácticas agroecológicas y posibles caminos de transición hacia la agroecología de los ganaderos familiares del norte uruguayo utilizando una metodología que se centra en el estudio de las prácticas técnicas, sociales y organizativas, lo cual permite acceder al esquema de funcionamiento y comprender los procesos de toma de decisiones en los sistemas de producción de tipo familiar. Las prácticas socio-productivas evidenciadas en la investigación permitieron elaborar una tipología que representa posibles caminos por los cuales estos ganaderos transitan hacia una producción y gestión agroecológica de las explotaciones. Los resultados de este estudio pueden ser utilizados para fortalecer procesos de concepción o de co-concepción, a través de la selección y difusión de innovaciones con acciones y políticas públicas más cercanas a los productores.

Abstract: Agroecology represents one of the main alternatives to production models generated by the green revolution, both in Uruguay and other countries. It appears as a response to climate change, biodiversity management, nature resource restoration, and, more recently, as a response to the COVID-19 pandemic crisis. In Uruguay, agroecology is marginal despite the existence of a law for a National Plan to Encourage Production with Agroecological Bases since 2018. Moreover, research on agroecological transition processes is very incipient. This study aims to identify agroecological practices and possible transition paths towards agroecology of family livestock farmers in northern Uruguay. The methodology used focuses the study on technical, social and organizational practices, allowing access to the operation scheme and understanding the decision-making processes in family-type production systems. The socio-productive practices revealed in the research allowed the elaboration of a typology that represents possible ways for these livestock farmers to move towards agroecological production and management of their farms. The results of this study can be used to strengthen processes of conception or co-conception by selecting and disseminating innovation with actions and public policies closer to farmers.

Resumo: A agroecologia representa uma das principais alternativas aos modos de produção gerados pela revolução verde, tanto no Uruguai como em outros países. Aparece como uma resposta às alterações climáticas, à gestão da biodiversidade e à restauração dos recursos naturais; e mais recentemente como uma resposta à crise pandêmica da COVID-19. No Uruguai, a agroecologia é marginal, apesar da existência de uma Lei do Plano Nacional para a Promoção da Produção de Base Agroecológica desde 2018, e a investigação sobre processos de transição agroecológica é muito incipiente. O objetivo deste trabalho é identificar práticas agroecológicas e possíveis vias de transição para a agroecologia dos criadores de gado familiares no norte do Uruguai, utilizando uma metodologia centrada no estudo das práticas técnicas, sociais e organizacionais, que permite o acesso ao esquema de funcionamento e a compreensão dos processos de tomada de decisão em sistemas de produção de tipo familiar. As práticas socio-produtivas reveladas pela investigação permitiram elaborar uma tipologia que representa as possíveis formas de evolução destes criadores de gado para a produção e gestão agro-ecológica das suas explorações. Os resultados deste estudo podem ser utilizados para reforçar os processos de concepção ou co-concepção, através da seleção e divulgação de inovações com ações e políticas públicas mais próximas dos produtores.

https://doi.org/10.31285/agro.27.1069

Influence of Alloying Elements and Solution Heat Treatment on Microstructure and Microhardness of the Ni-Nb-M System (M = Al, Ti, Cr, Fe)
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Ottani, Vinicius C.

; Pereira, Mariana S.

; Arruda, Matheus S. T.

; Rossi, Mariana C.

; Afonso, Conrado R. M.

Materials Research

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2023, Volume 26 Supl. 1 elocation e20230079

Resumo: En | Texto: En | PDF: En

Ni-based superalloys are widely used in critical components of aircraft engines and turbines and also in the petrochemical industry, for applications in highly corrosive environments. These alloys have as main characteristics their superior mechanical, corrosion and oxidation resistance at high temperatures, as well as creep resistance. The chemical composition associated with carrying out heat treatments directly influences the phases formed (such as the ordered cubic phase γ’-Ni3(Al,Ti) in the fcc γ-Ni matrix), and depending on the alloying elements and fraction, there is the possibility of an increase in mechanical strength. There is a certain gap in the literature regarding the study of ternary superalloys based on Ni-Nb, and the influence of the third alloying element on the microstructure and microhardness. In this context, the objective of the study is to characterize pseudo-eutectic alloys of the Ni-15Nb-xM and Ni-20Nb-xM systems (xM = 2Al, 4Ti, 15Fe and 15Cr, wt.%) and investigate the influence of alloy elements and solution heat treating on their microstructure and properties through X-Ray Diffraction, Optical Microscopy, Scanning Electron Microscopy and Vickers Microhardness. Microhardness and microstructures were significantly influenced by the addition of alloying elements. The addition of Cr had a significant effect on the hardness of the cast samples. All alloys showed microhardness and microstructural changes after solution heat treatment.

https://doi.org/10.1590/1980-5373-mr-2023-0079

Productive performance, breast growth and digestive system development in European quail subjected to post-hatch fasting for different periods
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CRUZ, FLAVIA K.

; FIGUEROA, CHRISTIAN DOUGLAS NICHELE

; ANDRADE, KASSIANA G.

; KANEKO, ISABELLE NAEMI

; BONAGURIO, LUCAS P.

; BEZERRA JÚNIOR, JAILTON S.

; ROSSI, ROBSON M.

; MURAKAMI, ALICE E.

; SANTOS, TATIANA C.

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Nº 4 elocation e20191188

Resumo: En | Texto: En | PDF: En

Abstract This study assessed the effect of different periods of post-hatch fasting on animal performance and breast and digestive system growth in European quail. Quail chicks were distributed in a completely randomized design, with four fasting periods (0, 24, 36, and 48 hs) and four replications of 40 birds per treatment. In 1 to 14-day-old chicks, weight gain decreased with increasing fasting time. Compensatory gain was observed from 15 days of age onward. Fasted quail had a lower length and relative weight of the digestive system than fed animals for up to 14 days. Histologically, the duodenal villus height was significantly lower in 3-day-old quail fasted for 36 hs than in those fasted for 48 hs, but this effect was not observed at 7 days. Scanning electron microscopy showed no differences in the small intestinal mucosa between fasted and fed birds at 3 days of age. Post-hatch fasting reduced the relative weight of the breast in quail aged 1 to 14 days but did not affect type IIa and IIb fiber diameter at 35 days. On the basis of these results, it is recommended that European quail raised for meat should not be fasted for more than 48 hs post-hatch.

https://doi.org/10.1590/0001-3765202320191188

Impacto de dispositivos de sombreamento na distribuição de pressão em um modelo genérico
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Rossi, Michele Marta

; Chvatal, Karin Maria Soares

; Prata-Shimomura, Alessandra Rodrigues

; Silva, Fernando Vitor Marques da

Ambiente Construído

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Dez 2022, Volume 22 Nº 4 Páginas 199 - 215

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo A ventilação natural é uma importante estratégia passiva para manutenção da qualidade do ar e do conforto térmico em espaços internos. O diferencial de pressão nas fachadas das edificações, quantificado a partir dos coeficientes de pressão (Cps), impacta diretamente no desempenho da ventilação natural. Fatores como direção do vento, entorno, tipo de terreno, geometria da edificação e detalhamentos nas fachadas influenciam a distribuição de pressão. Muitas investigações utilizam-se de ensaios em túneis de vento ou simulações fluidodinâmicas para avaliar os Cps em geometrias lisas e regulares. Neste artigo, objetiva-se avaliar o impacto de dispositivos de sombreamento externos nos Cps em um modelo genérico isolado de 3,0 m x 3,0 m x 2,7 m com duas aberturas (de 1 m2 cada uma) centralizadas e dispostas em faces opostas a 1,1 m do piso. Assim, a partir de sua versão reduzida (escala 1:7,5), cinco configurações (sem dispositivos, modelo selado e com aberturas e tipologias com sombreamentos horizontal, combinados e verticais) foram ensaiadas em túnel de vento para oito incidências de vento (de 0° a 90° e 180°). Os resultados indicarammaiores discrepâncias nos Cps nas tipologias com componentes verticais expostas às incidências de 45°, 60° e 75°.

Abstract Natural ventilation in buildings is an important passive strategy to maintain indoor air quality and comfortable thermal environments. The pressure differential on buildings’ façades, quantified by the wind pressure coefficients (WPCs), directly impacts the performance of natural ventilation. Several factors, as wind direction, surroundings, terrain type, building geometry and facades’ details influence wind pressure distribution. Many investigations use wind tunnel tests or computational fluid dynamics simulations to evaluate the Cps in regular geometries. This paper aims to evaluate the impact of external shading devices on the WPCs of a generic isolated model with 3.0 m x 3.0 m x 2.7 m with two openings (with 1.0 m 2 each), centralised and placed on opposite façades with a windowsill measuring 1.1 m. Thus, from its reduced version (scale 1:7.5), five configurations (model without shadings, sealed model and model with openings, and typologies with horizontal, combined and vertical shading devices) are tested in a wind tunnel with eight wind attack angles (0° to 90° and 180°). The results show greater differences in cases with vertical shading devices exposed to wind attack angles of 45°, 60° and 75°.

https://doi.org/10.1590/s1678-86212022000400636

Años requeridos para la evaluación a campo de cultivares comerciales de trigo pan en Argentina
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Abbate, P E.

; Rossi, E. A.

; Bonamico, N. C.

; Balzarini, M. G.

; Mójica, C. J.

Agriscientia

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Dez 2022, Volume 39 Nº 2 Páginas 3 - 3

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

RESUMEN En Argentina, la normativa vigente establece cuatro años de evaluación de rendimiento para cualquier nuevo cultivar comercial de trigo pan. El objetivo de este trabajo fue determinar la cantidad óptima de años de evaluación en ensayos comparativos de rendimiento de cultivares de trigo pan, condicionando dicho óptimo al grupo de calidad, ciclo de crecimiento y manejo fitosanitario. Se estimaron componentes de varianza (REML) con los datos de la Red de evaluación de cultivares de trigo pan de Argentina (RET), correspondientes a diez sitios experimentales. Se consideraron los tres grupos de calidad (GC1, GC2 y GC3), la primera y tercera época de siembra (E1 y E3), y manejo con y sin fungicida (CF y SF). Los resultados muestran que se requieren tres años de ensayos para evaluar el rendimiento de los diferentes grupos de calidad y ciclos de crecimiento manejados CF. Para el SF, se requieren cuatro años, excepto para GC1 en E3 y GC2 en E1, que demandan tres y más de cinco años, respectivamente. Estos resultados indican que la norma actual es apropiada para la mayoría de los casos; incluso, podría reducirse a tres CF, para mejorar la calidad de los ensayos y aumentar el número de repeticiones.

SUMMARY In Argentina, current regulations establish four years of yield evaluation for any new commercial bread wheat cultivar. The objective of this work was to determine the optimum number of years of evaluation in comparative yield trials of bread wheat cultivars, conditioning this optimum to the quality group, growth cycle and phytosanitary management. Variance components (REML) were estimated from the data of the bread wheat cultivar evaluation network of Argentina (RET), corresponding to ten experimental sites. The three quality groups (GC1, GC2 and GC3), the first and third sowing season (E1 and E3), and management with and without fungicide (CF and SF) were considered. The results show that three years of trials are required to evaluate the performance of the different quality groups and growth cycles managed CF. For SF, four years are required, except for GC1 in E3 and GC2 in E1, which demand three and more than five years, respectively. These results indicate that the current standard is appropriate for most cases; it could even be reduced to three CF, to improve trial quality and increase the number of repetitions.

https://doi.org/10.31047/1668.298x.v39.n2.36802

Encefalitis inmunomediada en un niño con antecedente de infección por SARS-CoV-2
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Luizaga, Jhoanna Admito

; Costa Almar, Florencia

; Zwirner, Agustina

; Fernández Polívanoff, M. Lucia

; Suárez, Ramiro F.

; Rossi, Santiago

; Pascual, Carolina

Archivos argentinos de pediatría

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Ago 2022, Volume 120 Nº 4 Páginas 1 - 10

Resumo: Es | Texto: Es | PDF: Es

https://doi.org/10.5546/aap.2022.e183

Experiencia en esplenopancreatectomías distales laparoscópicas
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Chiacchio, María V.

; Gorini Ditchoff, Giselle S.E.

; Garelli, Andrés

; Cilla, Eliana G.

; Moreno Negri, José M.

; Peso, Santiago M.

; Rossi, Javier L.

Revista argentina de cirugía

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Jun 2022, Volume 114 Nº 2 Páginas 124 - 132

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

RESUMEN Antecedentes: la resección pancreática distal es una técnica quirúrgica utilizada para el abordaje de lesiones del páncreas izquierdo. Objetivo: Analizar los resultados de la experiencia en esplenopancreatectomías distales laparoscópicas de nuestro hospital, a fin de evaluar los resultados y beneficios obtenidos. Material y métodos: se realizó un estudio retrospectivo y observacional de 17 pacientes intervenidos desde el año 2015 hasta el año 2020. Resultados: el 47,10% fueron hombres (n=8) y el 52,90% mujeres (n=9). Los motivos de consulta más frecuentes fueron: incidentaloma 52,94% (n=9) y dolor abdominal 48,06% (n=8). Se utilizaron como estudios de hallazgo más frecuentes la ecografía abdominal y la tomografía con contraste, que se complemetaron con otros estudios de alta complejidad. Entre los diagnósticos preoperatorios, el 11,76% (n=2) fue NQS, el 47,06% (n=8) NQM, el 5,88% NPM (n=1) y pseudoquiste pancreático, 11,76% (n=2), tumor maligno y 17,66% (n=3) TNE. El tamaño tumoral promedio fue de 4,26 cm (rango 2-10 cm). La tasa de conversión fue 23,08% (n=3). La media del tiempo operatorio fue de 270 minutos. Las complicaciones observadas fueron subdivididas en menores y mayores. Presentamos dos reinternaciones y no se informaron casos de mortalidad ni reoperaciones. Discusión: la laparoscopia es un abordaje seguro y eficaz para patología benigna y maligna pancreática en casos seleccionados. La fuga bioquímica, la fístula pancreática y la tasa de morbilidad presentan un valor similar al de otras series publicadas de resecciones pancreáticas laparoscópicas. No obtuvimos diferencias significativas entre el tratamiento del muñón pancreático y el riesgo de fístula.

ABSTRACT Background: Distal pancreatectomy with or without splenectomy is a surgical technique to approach lesions of the left pancreas. Objective: To analyze our experience in laparoscopic distal pancreatosplenectomies with evaluation of results and benefits. Material and methods: We performed a retrospective and observational study of 17 patients operated on from 2017 to 2020. Results: 47.10% were men (n = 8) and 52.90% were women (n = 9). The most common reasons for consultation were incidental tumors in 52.94% (n = 9); abdominal pain in 48.06% (n = 8). The diagnostic imaging tests performed were abdominal ultrasound and computed tomography scan of the abdomen and were complemented with other high-complexity studies. The preoperative diagnoses were SCN (11.76%; n = 2), MCN (5.88%; n = 1), pancreatic pseudocyst (11,76%; n = 2); malignant tumor and NET (17.66; n = 3). The mean size of the tumors was 4.26 cm (range 2-10 cm). Conversion rate was 23.08% (n = 3). Median operative time was 270 minutes. The complications observed were subdivided in minor and major. Two patients were readmitted and there were no cases or mortality or reoperations. Discussion: Laparoscopy is a safe and efficient approach for benign and malignant tumor s of the pancreas in selected cases. Biochemical leak, pancreatic fistula and morbidity rate are similar to those reported by other series of laparoscopic pancreatic resections. We did not find significant differences between the treatment of the pancreatic stump and the risk of fistula.

https://doi.org/10.25132/raac.v114.n2.1633 49 downloads

Diverticulitis apendicular, como diagnóstico diferencial
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Herrero, Javier

; Zalazar, Alejandro M.

; Rossi, Javier L.

Revista argentina de cirugía

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Jun 2022, Volume 114 Nº 2 Páginas 181 - 184

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

RESUMEN La diverticulitis apendicular (DA) es una patología poco frecuente, considerada clínicamente indistinguible de la apendicitis aguda, aunque podría presentar una sintomatología más leve. Este es el caso de un paciente masculino de 59 años, que concurre al Servicio de Urgencias presentando signos y síntomas sugestivos de una apendicitis aguda; una ecografía informa un asa tubular parcialmente compresible de 7,8 mm de diámetro y una fina banda de líquido laminar, compatible con proceso apendicular agudo. La apendicectomía se realizó de manera convencional evidenciándose un apéndice inflamado principalmente en su región distal. La histología reveló diverticulitis apendicular complicada con rotura. El paciente evolucionó favorablemente y se externó a las 24 horas. Existe una asociación de DA y neoplasia apendicular, por lo que se recomienda una colonoscopia y el seguimiento de este tipo de pacientes.

ABSTRACT Appendiceal diverticulitis (AD) is a rare condition considered clinically identical to acute appendicitis although it may present milder symptoms. We report the case of a 59-year-old male patient who visited the emergency department due to signs and symptoms suggestive of acute appendicitis. An abdominal ultrasound showed partially compressible tubular loop with a diameter of 7.8 mm and a thin band of laminar fluid, consistent with acute appendiceal process. During conventional appendectomy the appendix had signs of inflammation, mainly in the distal region. The histology revealed appendiceal diverticulitis complicated with rupture. The patient had favorable outcome and was discharged 24 hours later. As, there is a clear association between AD and appendiceal neoplasms, colonoscopy and patient monitoring is recommended.

https://doi.org/10.25132/raac.v114.n2.1564 59 downloads

10.

Recomendaciones de manejo de los anticoagulantes orales directos (DOACs) anti Xa y anti IIa
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Ceresetto, José M.

; Tajer, Carlos

; Duboscq, Cristina

; Bottaro, Federico

; Casais, Patricia

; Korin, Jorge

; Fondevila, Carlos

; Giumelli, Carla

; Scazziota, Alejandra

; Rossi, Andrea

; Botto, Fernando

; Ariscancela, Maria Ester

; Martinuzzo, Marta

; Zaidel, Ezequiel

; Fitz Maurice, Mario

; Bahit, Cecilia

; Vazquez, Fernando

; Molnar, Soledad

; Saizberg, Simón

; Negri Aranguren, Pedro

; Rosa, Claudio

; Fedele, José Luis

; Comignani, Pablo

; Pombo, Gonzalo

; Raña, Pablo

; Adamczuk, Yolanda

; Martí, Alejandra

; Charask, Adrián

; Penchasky, Diana

; Riveros, Dardo

; Mariani, Javier

; Puente, Dolores

; Celebrin, Lucia

; Bosio, Martín

; Brodsky, Andrés

; Sanchez Lucero, Analía

; Castillo Costa, Yanina

; Hirschson, Alfredo

; Arbesú, Guillermo

; Viñuales, Susana

; Kazelian, Lucía

; Maneyro, Alberto

; Gutierrez, Victoria

; Castro Rios, Miguel

; Gagliardi, Juan

; Lescano, Adrián

; Repetto, Fernanda

Medicina (Buenos Aires)

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Abr 2022, Volume 82 Supl. 2 Páginas 1 - 55

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract Direct oral anticoagulants have emerged as the drugs that have changed the man agement of the antithrombotic treatment in the last 15 years. Their advantages, like a more friendly way of anticoagulation and their lower risk of bleeding, especially in the brain, have positioned these new anticoagu lants as the first drug of choice in the two most frequent indications of anticoagulation, atrial fibrillation, and the venous thromboembolic disease. However, not all the patients can receive these agents, not all the direct oral anticoagulants have the same characteristics, and most importantly, not all the diseases with an indication of an anticoagulant drug can be treated with them. Therefore, it is mandatory that all the faculties involved in the management of these drugs must know them in depth, to decide the best treatment for the patient. This position paper, from a group of experts in anticoagulation in Argentina, can help the general practitioner in the daily use of direct oral anticoagulants based on the new evidence and the experience of a wide group of professionals. The way we relate to the anticoagulant treatment has changed in the last years. The doctors who work with them must also do so.

Resumen Los anticoagulantes orales directos han surgido como una de las herramientas que ha cambiado el manejo de la enfermedad trombótica en los últimos 15 años. Sus ventajas, desde el punto de vista de la facilidad de uso y menor riesgo de sangrado, especialmente de sangrado cerebral, han posicionado a estos nuevos anticoagulantes como la primera alternativa de tratamiento en las dos indicaciones más frecuentes en que necesitamos estas drogas, la fibrilación auricular y la enfermedad tromboembólica venosa. Sin embargo, no todos los pacientes pueden recibir estos agentes, no todos los anticoagulantes directos tienen las mismas pro piedades y fundamentalmente, no todas las enfermedades con indicación de un anticoagulante pueden tratarse con ellos;con lo cual es necesario que todos los profesionales que están involucrados en el manejo de estos medicamentos estén obligados a conocerlos en profundidad, para poder decidir el mejor tratamiento en cada caso particular. Este documento de posición de expertos de diferentes especialidades de Argentina, presenta lineamientos para el uso correcto de los anticoagulantes directos en base a nueva evidencia y a la experiencia de uso de un amplio grupo de profesionales. La forma de relacionarnos con el tratamiento anticoagulante ha cambiado. Los médicos que trabajamos con ellos también debemos hacerlo.

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11.

USE OF DIGITAL IMAGES TO CLASSIFY LEAF PHOSPHORUS CONTENT IN GRAPE TOMATOES
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Magalhães, Leonardo P. de

; Trevisan, Lucas R.

; Gomes, Tamara M.

; Rossi, Fabrício

Engenharia Agrícola

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2022, Volume 42 Nº spe elocation e20210147

Resumo: En | Texto: En | PDF: En

ABSTRACT Leaf chemical analysis is one of the ways to assess plant development. However, this type of assessment is expensive and time-consuming. The variation of nutrient content in the leaves modifies the proportion of light reflected and absorbed by plants at different wavelengths. Being able to relate the color reflected by the leaves with their phosphorus (P) content and using this data as input into an artificial neural network (ANN) can be an alternative for its determination. For this, it is necessary to establish which colors are most correlated with the different nutrients. Therefore, the phosphorus content in tomato leaves was evaluated in this study, according to four treatments (0.25, 50, 75, and 100% of the P doses). Different vegetation indices were also evaluated using images of mini-tomato leaves through a principal component analysis to determine which ones would be suitable to serve as an input to an ANN (multilayer perceptron). DGCI (Dark Green Color Index) and Bn (Normalized Blue) were the indices most related to P content. The neural network obtained 90% accuracy in the classification after training using both sides of the leaves.

https://doi.org/10.1590/1809-4430-eng.agric.v42nepe20210147/2022

12.

THERMAL IMAGING FOR STRESS ASSESSMENT IN RICE CULTIVATION DRIP-IRRIGATED WITH SALINE WATER
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Menegassi, Luana C.

; Benassi, Vinicius C.

; Trevisan, Lucas R.

; Rossi, Fabrício

; Gomes, Tamara M.

Engenharia Agrícola

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2022, Volume 42 Nº 5 elocation e20220043

Resumo: En | Texto: En | PDF: En

ABSTRACT Lowland rice is traditionally irrigated by flood systems, demanding high water consumption. Localized irrigation by subsurface dripping is proposed as an alternative, in addition to the replacement of the source of water intended for human consumption with another of lower quality, such as saline water. However, plants can be affected by saline and/or water stress in both conditions, and the use of thermal imaging emerges as a tool to assess the plant status. In this context, this study aimed to identify the stress of subsurface drip-irrigated arborio rice under different salt concentrations and soil moisture by thermographic images. The design consisted of randomized blocks in a (2×4)+2 factorial with three replications, totaling 30 experimental plots. Soil solution salinity was assessed by electrical conductivity. The thermal images were processed by an algorithm to determine the normalized relative canopy temperature (NRCT) index at different crop development stages. Saline stress was identified by the NRCT index, with higher sensitivity of plants at the flowering stage with a rebalance over time, confirmed at grain filling and harvest stages.

https://doi.org/10.1590/1809-4430-eng.agric.v42n5e20220043/2022

13.

Spinitectus asperus and Klossinemella iheringi , intestinal nematodes of Prochilodus lineatus (Pisces, Prochilodontidae) from the alluvial plain of the Middle Paraná River, Argentina
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CHEMES, SILVINA B.

; GERVASONI, SILVIA H.

; ROSSI, LILIANA M.

; LIZAMA, MARÍA DE LOS ANGELES P.

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Nº 3 elocation e20201687

Resumo: En | Texto: En | PDF: En

Abstract Prochilodus lineatus has been considered an ecosystem engineer in the Neotropics given its influence on important ecosystem processes, and it is therefore relevant to understand their inter-specific relationships. The association of P. lineatus with parasitic helminths was studied in two isolated shallow lakes of the alluvial plain of the Middle Paraná River. Only two species of gastrointestinal nematodes were found: Spinitectus asperus (Cystidicolidae) and Klossinemella iheringi (Atractidae), with S. asperus having higher prevalence and mean intensity values. This is the first record of K. iheringi in the Middle Paraná River, Argentina, as well as the southernmost citation of S. asperus.

https://doi.org/10.1590/0001-3765202220201687

14.

Rendimiento de dos índices predictores de mortalidad (PSI y CURB-65) en pacientes adultos inmunocompetentes hospitalizados por neumonía adquirida en la comunidad
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Muñoz, Paulina

; Garmendia, M. Luisa

; Ruiz, Mauricio

; Pizarro, Rolando

; Rossi, Patricio

; Prades, Yara

; Huenchur, Lucía

; Lizama, Luis

; Ampuero, Sandra

; Larrañaga, Carmen

; Avendaño, L. Fidel

; Luchsinger, Vivian

Revista médica de Chile

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Set 2021, Volume 149 Nº 9 Páginas 1275 - 1284

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Background: The severity of community acquired pneumonia (CAP) can be evaluated by the PSI and CURB-65 scales. However, it is unknown whether their predictive capacity varies according to the etiology of the disease. Aim: To compare the performance of these scales in adults with viral, bacterial, mixed, and no agent detected CAP. Material and Methods: We studied 725 patients hospitalized for CAP aged 18 to 95 years (47% females) Urinary S. pneumoniae and Legionella antigens were detected by immuno-chromatography (Binax®). Respiratory viruses and bacteria were detected by PCR in nasopharyngeal smears. The proportions of deaths, admission to the intensive care unit (ICU), and oxygen therapy were compared between mild and non-severe patients defined by PSI (I/II and I-III) and CURB-65 (1 and 1-2), according to the causative agent. Results: Ten percent of patients died. A causative agent was detected in 65%. The proportion of mild and non-severe patients according to PSI and CURB-65, and of deceased patients, admitted to the ICU and with oxygen therapy was similar in the four categories per agent. There were no deaths among non-severe patients with bacterial CAP. However, 6% of patients with CAP caused by virus or without causative agents, died. No deaths occurred among mild patients with bacterial CAP. In viral CAP, no deaths occurred among patients classified as mild only by PSI. The yields of PSI were greater than those of CURB-65 in non-severe patients who died and were admitted to the ICU with bacterial and viral CAP (5 and 14%; 7 and 12% respectively, p = 0.04). Conclusions: The prognostic performance of PSI in CAP varies according to the causative agent in adults. It is higher in non-severe bacterial cases, and superior to CURB-65.

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15.

Índice PROFUND y mortalidad intrahospitalaria en pacientes pluripatológicos. Análisis post-hoc
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Moretti, Dino

; Buncuga, Martin G.

; Laudanno, Carlos D.

; Quiñones, Nadia D.

; Scolari Pasinato, Carlos M.

; Rossi, Francisco E.

Medicina (Buenos Aires)

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Jun 2021, Volume 81 Nº 3 Páginas 329 - 336

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract The PROFUND index was developed and valid to predict mortality at 12 months in polypathological patients (PP). However, its potential value for predicting in-hospital mortality has not been sufficiently studied. The ability of the PROFUND index in comparison with C-reactive protein (CRP), albumin, and red blood cell distribu tion width (RDW) to predict in-hospital mortality was evaluated through the subsequent analysis of a prospective cohort of 111 multiple pathological patients admitted to the clinic medical. The mean age was 75.8 ± 9.3 years. In-hospital mortality was 17% (19 patients). The median (IQR) of the PROFUND index, albumin, CRP and ADE in the deceased and survivors was 12 (4) and 6 (7) p < 0.0001, 2.5 (0.4) and 2.6 (0.8) p 0.295, 58 (64) and 40 (60) p 0.176, 14.5 (2) and 14.6 (3) p 0.523, respectively. The multivariate logistic analysis showed that the PROFUND index is associated with in-hospital mortality (p 0.0003). The risk of dying during hospitalization is 20% higher for each point that the PROFUND index increases (OR 1.2, 95% CI 1.1-1.4). The area under the curve the receiver operating characteristic (AUC-ROC) of the PROFUND index to predict mortality during hospitalization (0.760, 95% CI 0.628-0.891) was higher than that of the RDW, CRP and albumin (0.494 95% CI 0.364-0.624 p 0.012; 0.583 95% CI 0.437-0.728 p 0.028; 0.621 0.494-0.748 p 0.109, respectively). The PROFUND index is associated with in-hospital mortality, with a greater predictive capacity than the biomarkers studied, which would add to its long-term prognostic value in multiple pathological patients.

Resumen El índice PROFUND se desarrolló y validó para predecir mortalidad a 12 meses en pacientes pluripatológicos. Sin embargo, su valor potencial para predecir mortalidad intrahospitalaria no ha sido suficientemente estudiado. Se evaluó la capacidad del índice PROFUND en comparación con la proteína C re activa (PCR), la albúmina, y el ancho de distribución eritrocitaria (ADE) para predecir mortalidad intrahospitalaria, mediante el análisis posterior de una cohorte prospectiva de 111 pacientes pluripatológicos internados en clínica médica. La edad promedio fue 75.8 ± 9.3 años. La mortalidad intrahospitalaria fue de 17% (19 pacientes). La mediana (RIQ) del índice PROFUND, albúmina, PCR y ADE en los fallecidos y sobrevivientes fue 12 (4) y 6 (7) p< 0.0001, 2.5 (0.4) y 2.6 (0.8) p 0.295, 58 (64) y 40 (60) p 0.176, 14.5 (2) y 14.6 (3) p 0.523, respectivamente. El análisis logístico multivariado mostró que el índice PROFUND se asocia con mortalidad intrahospitalaria (p 0.0003). El riesgo de fallecer durante la internación es 20% mayor por cada punto que se incrementa el índice PROFUND (OR 1.2, IC95% 1.1-1.4). El área bajo la curva de las características operativas del receptor (AUC-ROC) del índice PROFUND para predecir mortalidad durante la internación (0.760, IC95% 0.628-0.891) fue mayor a la del ADE, PCR y albúmina (0.494 IC95% 0.364-0.624 p 0.012; 0.583 IC95% 0.437-0.728 p 0.028; 0.621 0.494-0.748 p 0.109, respectivamente). El índice PROFUND se asocia a mortalidad intrahospitalaria, con una mayor capacidad predictiva que los biomarcadores estudiados, lo cual se sumaría a su valor pronóstico a largo plazo en pacientes pluripatológicos.

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