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Consumo de bebidas alcoólicas e incidência de obesidade abdominal em participantes da coorte ELSA-Brasil após nove anos de acompanhamento
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Marinho, Laís Lago

; Enriquez-Martinez, Oscar Geovanny

; Velásquez-Meléndez, Gustavo

; Viana, Maria Carmen

; Campos, Glaucia Cristina de

; Molina, Maria del Carmen Bisi

Ciência & Saúde Coletiva

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jan 2025, Volume 30 N. 1 elocation e14652022

Abstract: En Pt Es | Text: En Pt Es | PDF: En | PDF: Pt | PDF: Es

Abstract The scope of this article is to analyze the correlation between alcohol consumption and abdominal obesity in participants of the ELSA-Brasil cohort after a follow-up period of nine years. A longitudinal analysis was performed with baseline and follow-up data from ELSA-Brasil. At baseline, 15,105 civil servants were enrolled. After exclusions, the final sample consisted of 3,591 participants. Anthropometric and lifestyle data were collected, and abdominal obesity was diagnosed in accordance with the World Health Organization parameters. The t-test and chi-square test were applied, and crude and adjusted Poisson models were assessed. The results revealed that more than 70% of the sample reported alcohol use. In nine years, an increase in abdominal obesity and alcohol consumption was observed among men and women. A total of 1,588 new cases of abdominal obesity were identified. Higher alcohol consumption increased the risk of abdominal obesity in men (1.15, 95%CI 1.01-1.31, p < 0.001). The conclusion drawn was that after a follow-up period of 9 years, the highest risk of abdominal obesity was observed only in men who increased their alcohol consumption.

Resumo O objetivo é analisar a relação entre o consumo de álcool e obesidade abdominal em participantes da coorte ELSA-Brasil após nove anos de acompanhamento. Análise longitudinal a com dados da linha de base e follow-up do ELSA-Brasil. Na linha de base foram arrolados 15.105 servidores públicos. Após exclusões, a amostra final foi composta por 3.591 participantes. Dados antropométricos e de hábitos de vida foram coletados. Obesidade abdominal foi diagnosticada, segundo a Organização Mundial de Saúde. Foram utilizados teste t e qui-quadrado e testados modelos de Poisson bruto e ajustado. Mais de 70% da amostra relatou uso de bebida alcoólica. Em nove anos, foi observado aumento da obesidade abdominal e do consumo de álcool entre homens e mulheres. Foram identificados 1.588 novos casos de obesidade abdominal. O maior consumo de bebidas alcoólicas elevou o risco de obesidade abdominal em homens (1,15, IC95% 1,01-1,31, p < 0,001). Em nove anos de seguimento, o maior risco de obesidade abdominal foi observado apenas em homens que aumentaram o seu consumo de álcool.

Resumen El objetivo es analizar la relación entre el consumo de alcohol y la obesidad abdominal en participantes de la cohorte ELSA-Brasil tras nueve años de seguimiento. Análisis longitudinal realizado con datos de la línea de base y de seguimiento de ELSA-Brasil. En la línea de base se encontraban inscritos 15.105 servidores públicos. Tras las exclusiones, la muestra final estuvo compuesta por 3.591 participantes. Se recogieron datos antropométricos y de estilo de vida. Se diagnosticó obesidad abdominal, según la Organización Mundial de la Salud, se utilizaron las pruebas t y chi-cuadrado y se probaron modelos de Poisson crudos y ajustados. Más del 70% de la muestra refirió consumir alcohol. En nueve años se observó un aumento de la obesidad abdominal y del consumo de alcohol entre hombres y mujeres. Se identificaron 1.588 nuevos casos de obesidad abdominal. El mayor consumo de bebidas alcohólicas incrementó el riesgo de obesidad abdominal en los hombres (1,15, IC95% 1,01-1,31, p < 0,001). En 9 años de seguimiento, el mayor riesgo de obesidad abdominal se observó sólo en los hombres que aumentaron su consumo de alcohol.

https://doi.org/10.1590/1413-81232025301.14652022

Consumo de bebidas alcoólicas e incidência de obesidade abdominal em participantes da coorte ELSA-Brasil após nove anos de acompanhamento
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Marinho, Laís Lago

; Enriquez-Martinez, Oscar Geovanny

; Velásquez-Meléndez, Gustavo

; Viana, Maria Carmen

; Campos, Glaucia Cristina de

; Molina, Maria del Carmen Bisi

Ciência & Saúde Coletiva

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2025, Volume 30 N. 1 elocation e14652022

Abstract: Pt Es En | Text: Pt Es En | PDF: Pt | PDF: Es | PDF: En

https://doi.org/10.1590/1413-81232025301.14652022

Cardiomiopatia Chagásica Crônica: Influência do Exercício Físico Crônica
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Mota, Gustavo Augusto Ferreira

; Gatto, Mariana

; da Silva, Vitor Loureiro

; Martinez, Paula Felippe

; Okoshi, Marina Politi

Arquivos Brasileiros de Cardiologia

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aug 2024, Volume 121 N. 8 elocation e20240507

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

https://doi.org/10.36660/abc.20240507

Actualizaciones en el manejo general de pacientes postrasplante hepático y de sus complicaciones más frecuentes
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Díaz, Luis Antonio Villalón, Alejandro Ochoa, Gabriela García, Sergio Severino, Nicolás Ayares, Gustavo Idalsoaga, Francisco Dib, Martin Briceño, Eduardo Viñuela, Eduardo Martinez, Jorge Jarufe, Nicolás Rabagliati, Ricardo Meneses, Luis Muñoz-Schuffenegger, Pablo Vargas, José Ignacio Espino, Alberto Vera, María Magdalena Benítez, Carlos Wolff, Rodrigo Norero, Blanca Barrera, Francisco Soza, Alejandro Arrese, Marco Arab, Juan Pablo

Revista médica de Chile

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jun 2024, Volume 152 N. 6 Pages 704 - 717

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT Liver transplantation (LT) is a cost-effective therapy for advanced liver disease. Although LT significantly improves long-term survival, it requires strict control of immunosuppressants and their potential complications. Several available immunosuppressive drugs include glucocorticoids, calcineurin inhibitors, mycophenolate, mTOR inhibitors, and anti-CD25 antibodies. These drugs act particularly in T lymphocytes, depleting them, deviating their traffic, or blocking their response pathways. The main complications after LT include renal failure and infectious, immunological, biliary, vascular adverse events, metabolic, cardiovascular, and neoplastic diseases, especially during the first months. Bacteria, viruses, and fungi can cause infections in these patients. Prophylaxis against Herpes simplex virus, Varicella zoster virus, Cytomegalovirus, Pneumocystis jirovecii, Candida spp., and Aspergillus spp. should be considered according to the presence of risk factors. Among immunological complications, acute cellular rejection is common (30% of LT) but usually responds to immunosuppressive escalation. Also, chronic rejection appears in 3-17% of LT, but only half of the recipients respond to increased immunosuppressants. Appropriate treatment of the underlying etiology is essential, especially in autoimmune diseases, hepatitis B and C virus infection. Lifestyle changes must be encouraged in all patients, and alcohol consumption avoided (especially in alcohol use disorder). Due to the increased risk of cancer, neoplasms must be actively monitored, as well as osteoporosis and other metabolic disorders such as diabetes and cardiovascular disease.

RESUMEN El trasplante hepático (TH) es una terapia costo-efectiva para el tratamiento de las enfermedades hepáticas avanzadas. Aunque el TH mejora significativamente la supervivencia a largo plazo, requiere de un control estricto de la inmunosupresión y de las potenciales complicaciones. Entre los fármacos inmunosupresores destacan los corticoides, inhibidores de calcineurina, micofenolato, inhibidores de mTOR y los anticuerpos anti CD-25. Estos fármacos actúan especialmente sobre los linfocitos T, agotándolos, desviando su tráfico o bloqueando sus vías de respuesta. Las principales complicaciones post TH pueden ser renales, infecciosas, inmunológicas, biliares, vasculares, metabólicas, cardiovasculares y neoplásicas, especialmente los primeros meses post trasplante. Las infecciones son frecuentes y pueden ser causadas por bacterias, virus y hongos. Se debe considerar la profilaxis contra virus Herpes Simple, virus Varicela zoster, Citomegalovirus, Pneumocistys jirovecii, Candida spp. y Aspergillus spp. según la presencia de factores de riesgo. Entre las complicaciones inmunológicas, el rechazo celular agudo es frecuente (30% de los TH), pero habitualmente responde al tratamiento inmunosupresor. Asimismo, el rechazo crónico se presenta en el 3-17% de los TH y solo la mitad responde al incremento de inmunosupresión. El control de las etiologías de base es fundamental, especialmente en enfermedades autoinmunes e infecciones por virus hepatitis B y C. Se deben promover cambios de estilo de vida en todos los pacientes y evitar el consumo de alcohol (especialmente en trastorno por consumo de alcohol). Debido al mayor riesgo de cáncer, se debe vigilar activamente la aparición de neoplasias, así como de osteoporosis y otros trastornos metabólicos, en particular diabetes y enfermedad cardiovascular.

https://doi.org/10.4067/s0034-98872024000600704

INFLUÊNCIA DE GÊNERO NAS RECOMENDAÇÕES DE AÇÕES POR ANALISTAS DE EQUITY RESEARCH
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Ghossain, Amanda Martinez El

; Vieira, Anna De Abreu Sampaio Navarro

; Godoi, Alexandra Strommer

; Mirapalheta, Gustavo Corrêa

Revista de Administração de Empresas

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2024, Volume 64 N. 4 elocation e2023-0182

Abstract: Es En Pt | Text: Es En Pt | PDF: Es | PDF: En | PDF: Pt

RESUMEN Este estudio se propone probar empíricamente la hipótesis de que las mujeres en sus decisiones de inversión tienden a mostrar una mayor aversión al riesgo y/o un menor grado de optimismo que los hombres analizando las recomendaciones de inversión realizadas por analistas de Equity Research en Brasil. A partir de una muestra de 7496 recomendaciones para empresas que cotizan en la B3 entre 2009-2021, se encontró un efecto estadísticamente significativo en sentido contrario al previsto: las recomendaciones realizadas por mujeres tendieron a ser más optimistas. Se verificó que la diferencia se da específicamente en las recomendaciones de venta, emitidas con mayor frecuencia por los hombres, y que el efecto desaparece al controlar por sector de cobertura e institución a la que pertenece el analista, lo que sugiere que la diferencia se debe a que las mujeres, que representan sólo el 12,8% de todas las recomendaciones, se centran en la cobertura de sectores como el consumo. yo o Brasil 749 B 20092021, 20092021 2009 2021, 2021 2009-2021 previsto optimistas venta analista 128 12 8 12,8 consumo 74 2009202 200 202 2009-202 1 12, 7 200920 20 2009-20 20092 2 2009-2 2009-

ABSTRACT This study empirically tests the hypothesis in the literature that women, in their investment decisions, tend to show greater risk aversion and/or a lower degree of optimism than their male counterparts by analyzing investment recommendations by Equity Research analysts in Brazil. Based on a sample of 7496 recommendations for the main companies listed on the B3 between 2009-2021, a statistically significant effect was found in the opposite direction to that predicted: recommendations made by women tended to be more optimistic. We found that the difference is specific to sell recommendations, issued more frequently by men and that the effect disappears when controlling for the coverage sector and institution, which suggests that the difference is due to the fact of women, who account for only 12.8% of all recommendations, focus on covering specific sectors, such as consumption. decisions andor or Brazil 749 B 20092021, 20092021 2009 2021, 2021 2009-2021 predicted optimistic institution 128 12 8 12.8 sectors consumption 74 2009202 200 202 2009-202 1 12. 7 200920 20 2009-20 20092 2 2009-2 2009-

RESUMO Este estudo busca testar empiricamente a hipótese, presente na literatura, de que, em suas decisões de investimento, mulheres tenderiam a apresentar maior aversão ao risco e/ou menor grau de otimismo do que seus pares homens baseado na análise das recomendações de investimento por parte de analistas de Equity Research no Brasil. Numa amostra com 7496 recomendações para as principais empresas listadas na B3 entre 2009-2021, encontrou-se um efeito estatisticamente significativo na direção oposta ao previsto: recomendações feitas por mulheres tenderam a ser mais otimistas. Verificou-se que a diferença se dá especificamente nas recomendações de venda, emitidas mais frequentemente por homens, e que o efeito desaparece ao se controlar o setor de cobertura e a instituição a que o analista pertence. Ou seja, sugere que a diferença ocorre porque mulheres, que respondem por apenas 12,8% do total de recomendações, se concentrarem na cobertura de setores específicos, como consumo. hipótese literatura eou ou Brasil 749 B 20092021, 20092021 2009 2021, 2021 2009-2021 encontrouse encontrou previsto otimistas Verificouse Verificou venda pertence seja 128 12 8 12,8 específicos consumo 74 2009202 200 202 2009-202 1 12, 7 200920 20 2009-20 20092 2 2009-2 2009-

https://doi.org/10.1590/s0034-759020240403

Revisores 2023
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Molas de la Quintana, Adriana Beatriz Jimenez Genchi, Alejandro Carrizales, Alexia Gotti, Amanda Martinez Ortiz, Ana Rocío Martínez Yacelga, Ana del Camilo Ciantelli, Ana Paula Jimenez Figueroa, Andres Neumann, Angélica Paula Parodi Svartman, Bernardo Vazquez Rodriguez, Carolina Da Silva, Cecilia Baroni, Cecilia Lanza Perez, Cintia Beatriz Mola, Débora Alarcón Rubio, David Perales Mejia, Felipe de Jesús Sarachu, Gerardo Gelpi, Gonzalo Sosa, Gustavo Viana Batista, Helder Moizéis, Heloísa Bárbara Cunha Carrasco, Jimena Ungaretti, Joaquín Moreira, Karen Tomatis, Karina Oros, Laura Beatriz Mazaro, Lisabelle Manente Chiavone, Luciana Perilla Toro, Lyria Esperanza Campagnoli, Mabel Alicia Ruiz Barbot, Mabela Brenlla, María Elena Folle Chavannes, María Ana Freytes Frey, Marcela Rossal, Marcelo Ortiz, Maria Victoria Nabergoi, Mariela Montenegro, Marisela Lladó, Mónica Freitas De León, Paribanú Solís García, Patricia Ruiz Santos, Paul Fiorati, Regina Célia Martins, Rita de Cássia Andrade Dominguez-Lara, Sergio Alexis Herranz, Silvana Melisa Yoma, Solana María Gondim, Sonia Maria Guedes Rostagnol, Susana Wittke, Tommy Ballesteros, Virginia Tamayo, William

Psicología, Conocimiento y Sociedad

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dec 2023, Volume 13 N. 3 Pages 116 - 118

Abstract: Es | Text: Es | PDF: Es

https://doi.org/10.26864/pcs.v13.n3.rev

COVID-19-induced acute kidney injury and chronic kidney disease: correspondence response
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Musso, Carlos G. Aroca-Martinez, Gustavo

Brazilian Journal of Nephrology

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jun 2023, Volume 45 N. 2 Pages 263 - 263

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

https://doi.org/10.1590/2175-8239-jbn-2022-0115rep-en

Complex Posterior reversible encephalopathy syndrome with ACA infarct a woman with Lupus: Case Report and Review
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Llanos-Almario, Kevin

; Aroca-Martinez, Gustavo

; Iriarte-Diaz, Lisette

; Mondol-Almeida, Zulay

; Llinas-Rincon, Jhonny

; Raad-Sarabia, Maria

; Vázquez-Jimenez, Lourdes Carolina

; Rico-Fontalvo, Jorge

Revista Paraguaya de Reumatología

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jun 2023, Volume 9 N. 1 Pages 33 - 37

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT Posterior reversible encephalopathy syndrome is a clinical-radiological disorder, which usually progresses with classical acute neurological symptoms (visual impairment, acute headache, altered level of consciousness, seizures, and even focal neurological deficit). A case presented with a review of the currently available literature is reported in this article.

RESUMEN El síndrome de encefalopatía posterior reversible es un trastorno clínico-radiológico que suele cursar con síntomas neurológicos agudos clásicos (alteración visual, cefalea aguda, alteración del nivel de conciencia, convulsiones e incluso déficit neurológico focal). En este artículo se presenta un caso junto con una revisión de la literatura disponible en la actualidad.

https://doi.org/10.18004/rpr/2023.09.01.33

Posicionamento Brasileiro sobre Síndrome da Quilomicronemia Familiar – 2023 202 20 2
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Izar, Maria Cristina de Oliveira

; Santos Filho, Raul Dias dos

; Assad, Marcelo Heitor Vieira

; Chagas, Antonio Carlos Palandri

; Toledo Júnior, Alceu de Oliveira

; Nogueira, Ana Cláudia Cavalcante

; Souto, Ana Cristina Carneiro Fernandes

; Lottenberg, Ana Maria

; Chacra, Ana Paula Marte

; Ferreira, Carlos Eduardo dos Santos

; Lourenço, Charles Marques

; Valerio, Cynthia Melissa

; Cintra, Dennys Esper

; Fonseca, Francisco Antonio Helfenstein

; Campana, Gustavo Aguiar

; Bianco, Henrique Tria

; Lima, Josivan Gomes de

; Castelo, Maria Helane Costa Gurgel

; Scartezini, Marileia

; Moretti, Miguel Antonio

; Barreto, Natasha Slhessarenko Fraife

; Maia, Rayana Elias

; Montenegro Junior, Renan Magalhães

; Alves, Renato Jorge

; Figueiredo, Roberta Marcondes Machado

; Fock, Rodrigo Ambrosio Martinez, Tânia Leme da Rocha Giraldez, Viviane Zorzanelli Rocha

Arquivos Brasileiros de Cardiologia

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2023, Volume 120 N. 4 elocation e20230203

Abstract: Pt | Text: Pt | PDF: Pt

https://doi.org/10.36660/abc.20230203

10.

CFRP repair effectiveness on compressed steel tubular members with circular cutout
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Martinez, Jorge Luis

; Cyrino, Julio Cesar Ramalho

; Vaz, Murilo Augusto

; Hernández, Irving David

; Torres, Victor Daniel

; Perrut, Valber Azevedo

; Paula, Gustavo Gomes de

Latin American Journal of Solids and Structures

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2023, Volume 20 N. 2 elocation e477

Abstract: En | Text: En | PDF: En

Abstract Welding procedures for repairing corroded tubular structures are commonly used; however, composite material repairs are becoming popular since they do not use heat sources that might cause accidents. This paper provides a detailed description of the CFRP patch repair application in steel tubular members with a circular perforation originated from a prolonged corrosion process. The results of experimental tests on mid-scale unrepaired damaged and repaired steel tubes are reported. The predictions of the maximum loads recovered from a proposed numerical model lie close to the experimental observed values, justifying its usage for analysis of repaired tubular structures with circular cutouts when subjected to axial compression. Compared to unrepaired perforated tubes, the experimental results demonstrate a substantial strength recovery for repaired tubes. The value of this research for the oil and gas industry is that it demonstrates the feasibility of this kind of repair, which means reduced risk to the production unit and a shorter repair period. used however accidents process midscale mid scale reported values compression period

https://doi.org/10.1590/1679-78257357

11.

Ischemic Stroke and Acute Myocardial Infarction: Trends in in-Hospital Mortality in Brazil from 1998 to 2018
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Santos, Júlio Martinez

; Martinez, Alessandra Barboza Resende

; Silva, Emerson de Jesus

; Santana, Gustavo Roberto

; Barbosa, Romero Henrique de Almeida

; Lima, David Fernandes

; Lopes, Matheus Rodrigues

; Lopes, Johnnatas Mikael

International Journal of Cardiovascular Sciences

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2023, Volume 36 elocation e20220217

Abstract: En | Text: En | PDF: En

Abstract Background Ischemic stroke and acute myocardial infarction (AMI) are cardiovascular diseases with high morbidity and mortality rates in Brazil and worldwide. Their outcomes are influenced by public policies aimed at mitigating risk factors and by investments in infrastructure of emergency support and quality of hospital care. Objective To analyze the trend in the proportion of in-hospital deaths from ischemic stroke and AMI in Brazil as a way of evaluating the effectiveness of urgency and emergency services. Methods Ecological time series study using data from the Hospital Information System. The outcome was the proportion of in-hospital deaths from ischemic stroke and AMI with stratification by sex and state. Prais-Winsten regression was used to analyze the trend between 1998-2018 with α≤0,05. Results The proportion of deaths from AMI and ischemic stroke declined in the time series (p<0.001), decreasing annually by 0.17% and 0.25%, respectively. In 20 years, it reduced 43.76% (ischemic stroke) and 32.39% (AMI) in both sexes. However, the decline was more evident in the South and Southeast regions. Conclusion The reduction in hospital deaths from AMI and ischemic stroke was heterogeneous among Brazilian regions, which may be related to inequality in emergency services and hospital support.

https://doi.org/10.36660/ijcs.20220217

12.

Triple espacialidad en la participación ciudadana no institucionalizada: nuevas agendas de cambio social en Cali, Colombia
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Durán Saavedra, Gustavo Adolfo

; Barros Esquivel, Katia Paola

; Martinez Cruz, Sindy Faissury

; Gonzalez Cano, Victoria Eugenia

Bitácora Urbano Territorial

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dec 2022, Volume 32 N. 3 Pages 15 - 29

Resumen Ante la crisis de nuestros sistemas democráticos, expresada en distintos colapsos económicos, ambientales y sociales, y más recientemente en las consecuencias socioeconómicas en torno al manejo de la crisis sanitaria generada por el COVID-19, América Latina es hoy un escenario político que ha redefinido la forma como se despliega la participación ciudadana. Tomando como caso de estudio lo sucedido en la ciudad de Cali a partir de las (re)configuraciones socioespaciales, provocadas por el Paro Nacional de Colombia del año 2021, se analizará el papel que juega el espacio en todo este proceso de cambio. El argumento central consiste en la identificación de tres espacialidades que operan en torno a esa nueva forma de participación ciudadana no institucionalizada: el espacio barrial de las organizaciones sociales, el espacio virtual de las redes sociales y el espacio urbano de las grandes movilizaciones. Revisaremos cómo se ha dado esa articulación (triple) del espacio y la emergencia de nuevos actores urbanos/políticos, además de su enorme capacidad transformadora.

Abstract Faced with the crisis of our democratic systems, expressed in the different economic, environmental, and social collapses; and more recently in the socioeconomic consequences surrounding the management of the health crisis generated by COVID-19, Latin America today is a political scenario that has redefined the way in which citizen participation is deployed. Taking as a case study what happened in the Cali City, based on the socio-spatial (re) configurations, caused by the national strike in Colombia 2021, the role played by triple spatiality in this entire process of change will be analyzed. The central argument consists of the identification of the space that operate around this new form of non-institutionalized citizen participation: the micro/neighborhood space of social organizations, the virtual space of social networks and the urban macro space of the great urban mobilizations. We will review how this (triple) articulation of space and the emergence of new urban/political actors has occurred, in addition to its enormous transforming capacity.

Résumé Face à la crise de nos systèmes démocratiques, exprimée dans les différents effondrements économiques, environnementaux et sociaux; et plus récemment dans les conséquences socio-économiques entourant la gestion de la crise sanitaire générée par le COVID-19, l'Amérique latine est aujourd'hui un scénario politique qui a redéfini la manière dont la participation citoyenne se déploie. En prenant comme étude de cas ce qui s'est passé dans la ville de Cali à partir des (re)configurations socio-spatiales, provoquées par la grève nationale en Colombie en 2021, le rôle joué par la triple spatialité dans tout ce processus de changement sera analysé. L'argument central consiste en l'identification de trois spatialités qui s'opèrent autour de cette nouvelle forme de participation citoyenne non institutionnalisée : l'espace micro/quartier des organisations sociales, l'espace virtuel des réseaux sociaux et l'espace macro urbain des les grandes mobilisations urbaines. Nous verrons comment s'est opérée cette (triple) articulation de l'espace et l'émergence de nouveaux acteurs urbains/politiques, en plus de son énorme capacité de transformation.

Resumo Perante a crise dos nossos sistemas democráticos, expressa nos diversos colapsos económicos, ambientais e sociais; e mais recentemente nas consequências socioeconómicas em torno da gestão da crise sanitária gerada pelo COVID-19, a América Latina hoje é um cenário político que redefiniu a forma como a participação cidadã é implantada. Tomando como estudo de caso o que aconteceu na cidade de Cali a partir das (re)configurações socioespaciais, causadas pela Greve Nacional na Colômbia em 2021, será analisado o papel desempenhado pela tripla espacialidade em todo esse processo de mudança. O argumento central consiste na identificação de espaço que opera em torno dessa nova forma de participação cidadã não institucionalizada: o espaço micro/ bairro das organizações sociais, o espaço virtual das redes sociais e o espaço urbano macro de as grandes mobilizações urbanas. Revisitaremos como se deu essa (tríplice) articulação do espaço e a emergência de novos atores urbanos/políticos, além de sua enorme capacidade transformadora.

https://doi.org/10.15446/bitacora.v32n3.102362

13.

Detection of People Positive to COVID-19 through ATR-FTIR Spectra Analysis of Saliva using Machine Learning
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Vazquez-Zapien, Gustavo Jesús

; Mata-Miranda, Monica Maribel

; Martinez-Cuazitl, Adriana

; Guerrero-Ruiz, Melissa

; Garibay-Gonzalez, Francisco

; Sanchez-Brito, Miguel

Revista mexicana de ingeniería biomédica

Journal Metrics
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dec 2022, Volume 43 N. 3 elocation 1304

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

RESUMEN La COVID-19 es una enfermedad infecciosa ocasionada por el virus SARS-CoV-2. La propagación de este virus se produce principalmente a través de gotitas liberadas por la nariz o la boca de una persona infectada. Aunque se han desarrollado vacunas que permiten reducir efectivamente los efectos que esta infección viral provoca, el método más eficaz para contener la propagación del virus son las numerosas pruebas para detectar y aislar los posibles portadores. Sin embargo, el tiempo de respuesta, combinado con el costo de las pruebas reales, hace que esta opción sea poco práctica. Aquí, comparamos algunas metodologías de machine learning para proponer una estrategia confiable para detectar personas positivas a COVID-19 analizando espectros de saliva obtenidos por espectroscopia infrarroja transformada de Fourier (FTIR). Tras analizar 1275 espectros, con 7 estrategias comúnmente empleadas en el área de machine learning, concluimos que un modelo de regresión lineal multivariante (MLMR) resulta ser la mejor opción para identificar posibles infectados. De acuerdo con nuestros resultados, el desplazamiento observado en la región de la amida I del espectro, resulta fundamental y confiable para establecer una frontera a partir del cambio de pendiente que este provoca. Al ser más ágil y económica que la reacción en cadena de la polimerasa con transcriptasa inversa (RT-PCR), podría aplicarse confiablemente como estrategia preliminar a RT-PCR.

ABSTRACT COVID-19 is an infectious disease caused by the SARS-CoV-2 virus. This virus's spread is mainly through droplets released from the nose or mouth of an infected person. Although vaccines have been developed that effectively reduce the effects that this viral infection causes, the most effective method to contain the virus’s spread is numerous tests to detect and isolate possible carriers. However, the response time, combined with the cost of actual tests, makes this option impractical. Herein, we compare some machine learning methodologies to propose a reliable strategy to detect people positive to COVID-19, analyzing saliva spectra obtained by Fourier transform infrared (FTIR) spectroscopy. After analyzing 1275 spectra, with 7 strategies commonly used in machine learning, we concluded that a multivariate linear regression model (MLMR) turns out to be the best option to identify possible infected persons. According to our results, the displacement observed in the region of the amide I of the spectrum, is fundamental and reliable to establish a border from the change in slope that causes this displacement that allows us to characterize the carriers of the virus. Being more agile and cheaper than reverse transcriptase polymerase chain reaction (RT-PCR), it could be reliably applied as a preliminary strategy to RT-PCR.

https://doi.org/10.17488/rmib.43.3.5

14.

Exergo-economic study of the process for obtaining biochar derived from oil palm kernel shell on an experimental and pilot scale
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Quiroz-Mojica, Laura Janeth

; Peñuela-Mesa, Gustavo Antonio

; Diaz-Muegue, Luis Carlos

; Martinez-Smit, Carlos

; Bastidas-Barranco, Marlon José

DYNA

Journal Metrics
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sep 2022, Volume 89 N. 223 Pages 133 - 140

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen Se realizó un estudio para determinar el costo exergético de la producción de biocarbón a base de cuesco de palma de aceite mediante pirolisis lenta en un horno de experimental y uno piloto. Inicialmente se evaluaron flujos másicos, energéticos y exergéticos aplicando la metodología de escalamiento de Costo Exergético Específico (CEE), basada en el concepto recurso-producto. Se determinaron las eficiencias energéticas y exergéticas de los equipos y se calculó el costo exergético. El costo exergético de 1 kg de biocarbón es de 38990 $-kJ/kJ para el horno experimental y 206 $-kJ/kJ para el horno piloto. En conclusión, el costo exergético del biocarbón puede variar dependiendo de los equipos, las condiciones de operación y el lugar en donde se produzca. Se recomienda realizar el aprovechamiento del calor y de la energía que contienen los gases para optimizar los procesos.

Abstract A study was carried out to determine the exergy cost of biochar production based on oil palm kernel shell by slow pyrolysis in an experimental and a pilot furnace. Initially, mass, energy and exergy flows were evaluated by applying the Specific Exergy Costing (SPECO) scaling methodology, based on the resource-product concept. The energy and exergy efficiencies of the equipment were determined and the exergy cost was calculated. The exergy cost of 1 kg of biochar is 38990 $-kJ/kJ for the experimental furnace and 206 $-kJ/kJ for the pilot furnace. In summary, the exergy cost of biochar can vary depending on the equipment, operating conditions and the location where it is produced. It is recommended to make use of the heat and energy contained in the gases to optimize the process.

https://doi.org/10.15446/dyna.v89n223.99359

15.

Reserva contráctil por fracción de eyección sola, o con elastancia. ¿Cuál es el mejor predictor de eventos luego de un Eco Estrés sin isquemia?
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HABER, DIEGO M. LOWENSTEIN

; ARBUCCI, ROSINA

; MERLO, PABLO MARTINEZ, LILIANA GASTALDELLO, NATALIO SAAD, ARIEL K. ZAMBRANA, GUSTAVO F. LOWENSTEIN, JORGE A.

Revista argentina de cardiología

Journal Metrics
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sep 2022, Volume 90 N. 5 Pages 346 - 352

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

RESUMEN Introducción: El comportamiento de la fracción de eyección del ventrículo izquierdo (FEVI) durante el ejercicio se utiliza para medir la reserva contráctil (RC). La RC medida por elastancia podría tener mayor valor pronóstico. Objetivo: Establecer si la medición de la RC por elastancia añade valor pronóstico a largo plazo en relación al comportamiento aislado de la FEVI en pacientes con un Eco Estrés sin isquemia miocárdica. Material y métodos: Estudio retrospectivo, realizado en 904 pacientes con Eco Estrés con ejercicio sin isquemia. Se valoró la RC por FEVI y por elastancia. Se dividieron en 2 grupos: Grupo 1: RC por FEVI presente (a su vez este grupo se dividió en 2 subgrupos: Grupo 1 A, RC con elastancia presente y Grupo 1B: ausencia de RC por elastancia), y Grupo 2: pacientes con ausencia de RC por FEVI. El seguimiento fue de 17,7 ± 5,4 meses. Se consideraron como eventos: muerte, infarto agudo de miocardio (IAM), accidente cerebrovascular (ACV) y/o internación de causa cardiovascular. Resultados: Del total del Grupo 1 (536 pacientes), 200 (37,3%) se incluyeron en el Grupo 1A y 336 (62,7%) en el Grupo 1B. En el Grupo 2, se incluyeron 368 pacientes. En el seguimiento, los pacientes del Grupo 2 tuvieron más eventos, 30 (8,1%) vs. 22 (2,6%) (HR 3,14, IC95% 1,95-5,9, log rank test p<0,001). Dentro del G1, los pacientes del Grupo 1B presentaron más eventos: 18 (5,3%) vs 4 eventos (2%) (HR 2,46 IC95% 1,06-7,3, log rank test p<0,05). En el modelo de regresión, la elastancia fue la única variable predictora de eventos (HR 3,2, IC95% 1,83-5,6, p<0,001). Conclusiones: En el Eco Estrés ejercicio negativo para isquemia, el comportamiento de la RC evaluada por elastancia permitió identificar un subgrupo de peor pronóstico a largo plazo en pacientes con comportamiento normal de la FEVI.

ABSTRACT Background: The behavior of left ventricular ejection fraction (LVEF) during exercise is used to measure contractile reserve (CR). CR measured by elastance could have greater prognostic value. Objective: To establish whether the measurement of CR by elastance adds long-term prognostic value to CR measured by LVEF in patients with a Stress Echo without myocardial ischemia. Material and methods: Retrospective study, carried out in 904 patients with an exercise Stress Echo without ischemia. CR was assessed by LVEF and by elastance. Patients were divided into 2 groups: Group 1: presence of CR by LVEF (in turn this group was divided into 2 subgroups: Group 1A, CR with elastance present, and Group 1B: absence of CR by elastance), and Group 2: patients with absence of CR by LVEF. The follow-up was 17,7 ± 5,4 months. Outcomes considered were death, acute myocardial infarction (AMI), stroke, and cardiovascular hospitalization. Results: 536 patients were included in Group 1, 200 (37,3 %) in Group 1A and 336 (62,7%) in Group 1B. In Group 2, 368 patients were included. At follow-up, patients in Group 2 had more events, 30 (8.1%) vs. 22 (2.6%) (HR 3.14, 95% CI 1.95-5.9, log rank test p <0.001). Within G1, patients in Group 1B presented more events: 18(5.3%) vs 4 (2%) (HR 2.46 CI 95% 1.06-7.3, log rank test p <0.05). In the regression model, CR assessed by LVEF and additionally by elastance was the only significant outcome predictor (HR 3.2, 95% CI 1.83-5.6, p <0.001). Conclusions: In an exercise Stress Echo negative for ischemia, CR behavior evaluated by elastance allowed us to identify a subgroup with a worse long-term prognosis in patients with normal LVEF response.

https://doi.org/10.7775/rac.es.v90.i5.20560

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