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Resumo O estudo fundamenta-se em uma análise geral das geociências do colapso nos campos de cultivo de Santa María Zacatepec, na cidade de Juan C. Bonilla, México. A técnica de sensoriamento remoto é aplicada no desenvolvimento, permitindo a interpretação de combinações de bandas e a determinação da geometria, geologia, geomorfologia e cartografia do local. É apresentada uma análise resumida do trabalho realizado, além de modelos de simulação do gasto hidrológico e da aceleração da água nos taludes estruturais de escoamento. Esses dados foram utilizados para o mapeamento final e a modelagem gráfica. Foi realizado um estudo geomorfológico, geológico e topográfico do local, utilizando técnicas telemétricas aéreas e de satélite. Também foi utilizado um software especializado para levantamentos geodésicos e mapeamento em modelos 2D e 3D da área de análise. Os levantamentos do local foram realizados com o objetivo de conhecer o formato da estrutura e identificar áreas de risco potencial para a população próxima ao colapso. Foram obtidas ortofotos para calcular e determinar a inclinação por distância-elevação, aceleração-altura, fluxo de água e força, o que serviu para concluir as possíveis causas que levaram ao colapso e para ter dados técnicos suficientes que foram compartilhados com as autoridades de proteção civil.

Abstract This paper presents a general analysis from the geosciences of structural collapses. The analysis was conducted in the crop fields of Santa María Zacatepec, in the city of Juan C. Bonilla, Mexico. The analysis implemented the Remote Sensing technique, facilitating the interpretation of band combinations and determining the geometry, geology, geomorphology and cartography of the site under study. A summary analysis of the work performed is presented, in addition to showing simulation models of the hydrological outflow and water acceleration in the runoff structural slopes, data that were used for the final mapping and graphic modeling. A geomorphological, geological, and topographical study of the site was conducted, using satellite and aerial telemetric techniques. Specialized software was also used for geodetic surveys, mapping in 2D and 3D models of the analysis area. Surveys of the site were carried out to determine the shape of the structure and identify potentially risk areas for the population near the collapse events. Orthophotos were obtained to calculate and determine the slope by distance-elevation, acceleration-height, water flow and force, which served to conclude the possible causes that led to the collapses and have sufficient technical data that were shared with the civil protection authorities.

Resumen El trabajo se basa en un análisis general desde las geociencias del colapso en los campos de cultivo de Santa María Zacatepec, de la ciudad Juan C. Bonilla. En el desarrollo se aplica la técnica de Percepción Remota, permitiendo interpretar combinaciones de bandas y determinar la geometría, geología, geomorfología y cartografía del sitio. Se presenta un análisis resumido del trabajo que se realizó, además de mostrar modelos de simulación del gasto hidrológico y la aceleración del agua en las pendientes estructurales de escorrentía, datos que se usaron para la cartografía y modelado gráfico finales. Se realizó un estudio geomorfológico, geológico y topográfico del lugar, con técnicas telemétricas satelitales y aéreas; también se utilizó software especializado que se aplicó para levantamientos geodésicos, realizando cartografía en modelos 2D y 3D del área de análisis. Las prospecciones del lugar se realizaron con el objetivo de conocer la forma de la estructura e identificar áreas potencialmente riesgosas para la población cercana al colapso. Se obtuvieron ortofotos para calcular y determinar la pendiente por distanciaelevación, la aceleración-altura, el gasto y la fuerza del agua; que sirvió para concluir las posibles causas que ocasionaron el colapso, y contar con datos técnicos suficientes que se compartieron con las autoridades de protección civil.

https://doi.org/10.15359/rgac.72-1.12

Rumen fermentation of feed samples incubated in filter bags made from different textiles or dispersed in the medium using an in vitro gas production system
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García, Eduardo Hernández

; Pérez, Atmir Romero

; Corona, Luis

; Gómez, José Moisés Talamates

Ciência Rural

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2024, Volume 54 Nº 2 elocation e20220462

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

ABSTRACT: The effect of different feed substrates incubated in filter bags [no bag (NB); Ankom® F57, 25 μm pore size (25AN); polyester, 45 μm pore size (45PB); polyester, 67 μm pore size (67PB) ] or dispersed in the medium on gas production, digestion and rumen fermentation was evaluated using an in vitro gas production system. Filter bags reduced (P < 0.01) gas production but increased (P < 0.01) the in vitro dry matter digestibility (45PB and 67PB). Additionally, the use of filter bags with smaller pore size, reduced total volatile fatty acid (P < 0.01), but had minimal effects on acetate, propionate, and butyrate concentration. Our research suggested that using filter bags with a pore size of 67 µ would reduce some negative effects of incubating feed substrate dispersed in the medium or in filter bags with smaller pore size. However, the use of bags with a larger pore size might allow the wash out of small feed particles with consequent overestimation of digestibility.

RESUMO: O efeito de diferentes substratos alimentares incubados em sacos de filtro [sem saco (NB); Ankom® F57, tamanho de poro de 25 μm (25AN); poliéster, tamanho de poro de 45 μm (45PB); poliéster, tamanho de poro de 67 μm (67PB) ] ou disperso no meio na produção de gás, digestão e fermentação ruminal foi avaliada usando um sistema de produção de gás in vitro. As bolsas de filtro reduziram (P < 0,01) a produção de gases, mas aumentaram (P < 0,01) a digestibilidade da matéria seca in vitro (45PB e 67PB). Adicionalmente, o uso de bolsas de filtro com tamanho de poro menor reduziu o ácido graxo volátil total (P < 0,01), mas teve efeitos mínimos na concentração de acetato, propionato e butirato. Nosso trabalho sugere que usar sacos de filtro com tamanho de poro de 67 µ reduziria alguns efeitos negativos da incubação de substrato de alimentação disperso no meio ou em sacos de filtro com tamanho de poro menor. No entanto, o uso de sacolas com poros maiores pode permitir a eliminação de pequenas partículas de ração com consequente superestimação da digestibilidade.

https://doi.org/10.1590/0103-8478cr20220462

Manejo interdisciplinario de la obesidad y el sobrepeso en rehabilitación cardiaca: revisión de la Sociedad Mexicana para el Cuidado del Corazón
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Lara-Vargas, Jorge A.

; Pérez-Reyes, Angélica A.

; Núñez-Urquiza, Juan P.

; Navarrete de la O, Dulce M.

; Ilarraza-Lomelí, Hermes

; Leyva-Valadez, Eduardo A.

; González-Rentería, María E.

; Romero-Rendón, Minerva

; Ponce-de-León-Espíndola, Marcos

; Maldonado-Ramírez, Martha C.

; Rubio-Blancas, Aquiles

Archivos de cardiología de México

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Dez 2023, Volume 93 Nº 4 Páginas 464 - 475

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

Resumen Antecedentes: La obesidad es un trastorno multifactorial caracterizado por un aumento en la adiposidad corporal, de amplia prevalencia en nuestro país, a cualquier edad y ligada a grandes consecuencias adversas, incluyendo el desarrollo de cardiopatías. Los programas de rehabilitación cardiaca (RC) son intervenciones interdisciplinarias encaminadas no solo a restaurar la funcionalidad perdida de los pacientes que han sufrido un desenlace cardiovascular, sino también a corregir aquellos factores de riesgo que lo propiciaron y que interfieren en los resultados adaptativos del mismo. La obesidad contribuye a perpetuar el riesgo de cardiopatía y suele ser resistente a las modificaciones del estilo de vida de manera convencional. Objetivo: Establecer pautas en el reconocimiento de la obesidad con directrices de atención al paciente con cardiopatía dentro de los programas de RC y su abordaje interdisciplinario. Método: A través de una extensiva revisión bibliográfica y después de una discusión interdisciplinaria, se elaboró el presente documento para fijar una postura sobre el abordaje de la obesidad en el contexto de los programas de RC en pacientes con cardiopatía. Resultados y conclusiones: Nuestra Sociedad reconoce el abordaje interdisciplinario de los pacientes con obesidad y cardiopatía en su prevención primaria y secundaria, insta a la precisión en su diagnóstico y valoración, y recomienda que su eje primario debe estar basado en primera instancia en las modificaciones del estilo de vida (entrenamiento físico, atención nutricional e intervención psicoemocional), en tanto que la terapia farmacológica y la cirugía bariátrica pudieran ser coadyuvantes en la optimización de los resultados en pacientes selectos.

Abstract Background: Obesity is a multifactorial disorder characterized by increased body adiposity with a wide prevalence in our country, at any age, and linked to major adverse consequences, including the development of heart disease. Cardiac rehabilitation (CR) programs are interdisciplinary interventions aimed not only at restoring the lost functionality of patients who have suffered a cardiovascular outcome, but also at correcting those risk factors that led to it and that interfere with its adaptive results. Obesity contributes to perpetuating heart disease risk and is often resistant to conventional lifestyle modifications. Objective: Establish guidelines in the recognition of obesity with care guidelines for patients with heart disease within CR programs and their interdisciplinary approach. Method: Through an extensive bibliographical review and after an interdisciplinary discussion, this document was prepared to establish a position on the approach to obesity in the context of CR programs in patients with heart disease. Results and conclusions: Our Society recognizes the interdisciplinary approach of our patients with obesity and heart disease in its primary and secondary prevention, urges precision in its diagnosis and assessment, recommends that its primary axis must be based in the first instance on lifestyle modifications (physical training, nutritional care and psycho-emotional intervention), while pharmacological therapy and bariatric surgery could be coadjuvants in optimizing the results in selected patients.

https://doi.org/10.24875/acm.22000288

Desarrollo y validación de una escala de percepción de riesgo de COVID-19 en Perú
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Zeladita-Huaman, Jhon Alex

; Franco-Chalco, Eduardo

; Zegarra-Chapoñan, Roberto

; Iguiñiz-Romero, Ruth

; Amemiya-Hoshi, Isabel

Revista Peruana de Medicina Experimental y Salud Pública

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Jun 2023, Volume 40 Nº 2 Páginas 170 - 178

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

RESUMEN Objetivos. Desarrollar y validar una escala de percepción de riesgo ante la COVID-19 (PR-COVID-19-PE) en población peruana. Materiales y métodos. Estudio transversal psicométrico, realizado en el 2022. En la fase 1 se diseñó la escala inicial mediante revisión teórica, grupos focales, panel de expertos y revisión documental de escalas. En la fase 2 se determinó la escala mediante juicio de expertos y una prueba piloto. En la fase 3 se hizo una encuesta virtual en 678 pobladores peruanos adultos. Se efectuó un análisis factorial confirmatorio. Para determinar la validez de criterio se realizó un análisis correlacional (r de Pearson) con una escala válida de percepción de riesgo y la escala de miedo a la COVID-19. Resultados. La PR-COVID-19-PE está compuesta por dos dimensiones (cognitivo y emocional), presentó buen ajuste en la validez de constructo (x2/gl=2,34, Comparative Fit Index = 0,96, Tucker-Lewis Index = 0,96, Root Mean Square Error of Approximation = 0,05 y Standarized Root Mean-Square = 0,07) y óptima consistencia interna (ώ=0,88). Asimismo, reportó correlación con otra escala de percepción de riesgo ante la COVID-19 (r=0,70, p<0,001) y miedo a la COVID-19 (r = 0,41, p < 0,001). Además, presenta invarianza métrica y escalar tanto por sexo como por nivel educativo. Conclusiones. La escala PR-COVID-19-PE presentó adecuada confiabilidad y validez de contenido, constructo y criterio. Constituye un instrumento para medir la percepción de riesgo ante la COVID-19 en poblaciones similares. Sin embargo, se requiere estudios adicionales en diferentes grupos poblacionales.

ABSTRACT Objectives. To develop and validate a risk perception scale for COVID-19 (PR-COVID-19-PE) in the Peruvian population. Materials and methods. Psychometric cross-sectional study conducted in 2022. In phase 1, in order to design the scale, we carried out a theoretical review and a documentary review of scales, we also used focus groups as well as an expert panel. Phase 2 included expert judgment and a pilot test. A virtual survey was conducted among 678 Peruvian adults during phase 3. A confirmatory factor analysis was carried out as well. We used a correlational analysis (Pearson’s r) with a valid risk perception scale and the COVID-19 fear scale to determine criterion validity. Results. The PR-COVID-19-PE has two dimensions (cognitive and emotional) and showed good fit during construct validity (x2/gl=2.34, Comparative Fit Index=0.96, Tucker-Lewis Index=0.96, Root Mean Square Error of Approximation= 0.05 and Standardized Root Mean-Square=0.07) and optimal internal consistency (ώ=0.88). Likewise, the PR-COVID-19-PE showed correlation with another COVID-19 risk perception scale (r=0.70, p< 0.001) and a fear of COVID-19 scale (r=0.41, p<0.001). In addition, it presents metric and scalar invariance by both sex and educational level. Conclusions. The PR-COVID-19-PE scale showed adequate reliability and content, construct and criterion validity. It is an instrument that can measure COVID-19 risk perception in similar populations. However, further studies are required for different populations.

https://doi.org/10.17843/rpmesp.2023.402.12289

Detección y resolución de problemas relacionados con medicamentos en un servicio de Atención Farmacéutica en Argentina
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Granchetti, Hugo

; Papalardo, Mónica

; Romero, Matías Emanuel

; Domínguez, María Paula

; Gomboso, Victoria

; Larrea, Marina

; Raspanti, Geraldine

; Otero, Matías

; Reynaga, Carla

; Pezanitti, Antonella

; Coyle, Javier

; Lagomarsino, Eduardo

Pharmaceutical Care España

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Jun 2023, Volume 25 Nº 3 Páginas 16 - 29

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

Resumen Introducción: La Atención Farmacéutica consiste en un proceso asistencial sistemático para detectar, resolver y prevenir Problemas Relacionados con Medicamentos. El objetivo del presente trabajo es describir el número y perfil de problemas detectados y resueltos en un conjunto de pacientes adultos atendidos en una Unidad de Optimización de la Farmacoterapia en Argentina, durante un seguimiento farmacoterapéutico promedio de un año. Método: Se realizó un estudio cuasi-experimental, abierto y prospectivo en 40 pacientes ambulatorios. Se registraron las características clínicas y medicamentos, así como su adherencia o no al servicio. Se empleó la clasificación de Problemas Relacionados con Medicamentos de Minnesota, registrando su dimensión, categoría, causa, patología o condición clínica asociada, medicamento asociado, estado de riesgo, estado final y método de resolución. Resultados: Los grupos farmacoterapéuticos mayormente utilizados fueron beta-bloqueantes, estatinas, vitaminas y minerales, analgésicos, inhibidores de la bomba de protones y benzodiacepinas. Los problemas de indicación, especialmente por necesidad de farmacoterapia adicional, prevalecieron como los más frecuentes, incluyendo la falta de farmacoterapia preventiva con vacunas. Se logró resolver el 73,6% de los problemas detectados, de los cuales el 60,3% se hizo a través de informes a los médicos tratantes. El resto se pudo abordar mediante la educación al paciente, especialmente los de adherencia. Conclusiones: La Atención Farmacéutica permitió una descripción sistemática del perfil de problemas farmacológicos detectados y resueltos en un conjunto de pacientes adultos mayores ambulatorios, principalmente de sexo femenino, en el contexto de una Unidad de Optimización de la Farmacoterapia montada en un hospital universitario de Argentina.

Abstract Introduction: Pharmaceutical Care is a systematic process to detect, solve, and prevent Drug Related Problems. The aim of this study is to describe the number and profile of problems detected and solved in a group of adult patients interviewed in a Pharmacotherapy Optimization Unit in Argentina, during an average pharmacotherapeutic follow-up of one year. Method: A quasi-experimental, open-label, prospective study was carried out in 40 outpatients. The Clinical characteristics and medications were revealed, as well as their adherence to the service. The Minnesota classification of Drug Therapy Problems was used, recording dimension, category, cause, associated clinical condition, associated medication, risk status, final status, and resolution method. Results: The most widely used pharmacotherapeutic groups were beta-blockers, statins, vitamins and minerals, analgesics, proton pump inhibitors, and benzodiazepines. Indication problems, especially due to the need for additional pharmacotherapy, prevailed as the most frequent, including the lack of preventive vaccines. It was possible to solve 73.6% of the detected problems, of which 60.3% was done through reports to the treating physicians. The rest could be addressed through patient education, especially those related to adherence. Conclusions: Pharmaceutical Care allowed a systematic pharmacotherapy work-up of Drug Related Problems detected and solved in a group of elderly outpatients, mainly female, in the context of a Pharmacotherapy Optimization Unit set up in a university hospital in Argentina.

https://doi.org/10.60103/phc.v25i3.803

Distribución geográfica y tipo de infección del virus linfotrópico T humano en pacientes peruanos 2019-2021
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Miranda-Ulloa, Eduardo

; Romero-Ruiz, Soledad

; Montalvo-Otivo, Raul

; Suárez-Agüero, Dilan

; Quiroz-Ruiz, Hans Ramón

; Valverde-Ticlia, Fanny

; Briceño-Espinoza, Ronal

Revista chilena de infectología

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Abr 2023, Volume 40 Nº 2 Páginas 193 - 196

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

Resumen En el presente estudio describimos y caracterizamos la distribución geográfica de los casos positivos confirmados a HTLV-1 y 2 de pacientes peruanos con diagnóstico presuntivo entre 2019 y 2021. De un total de 555 muestras positivas confirmadas, 546 (98,4%) fueron HTLV-1 y 9 (1,6%) HTLV-2. Además, 22 de 24 departamentos del Perú presentaron casos de HTLV-1, siendo los principales motivos de solicitud de confirmación diagnóstica: aspirante a donar sangre con prueba de tamizaje reactivo, sospecha de leucemia/linfoma y paraparesia espástica tropical. Los resultados reflejan que la identificación de los puntos críticos constituye una brecha persistente respecto al diagnóstico, siendo cruciales para reducir el número de nuevos casos en Perú.

Abstract In the present study we describe and characterize the geographic distribution of HTLV-1 and 2 positive cases from Peruvian patients with presumptive diagnosis 2019 - 2021. Of a total of 555 confirmed positive samples, 546 (98.4%) were HTLV-1 and 9 (1.6%) HTLV-2. In addition, 22 of 24 departments of Peru presented cases of HTLV-1. The main reasons for requesting a confirmatory diagnosis being: aspiring to donate blood with a reactive screening test, suspicion of leukemia/ lymphoma and tropical spastic paraparesis. The results reflect that the identification of critical points constitutes a persistent gap regarding the diagnosis, being crucial to reduce the number of new cases in Peru.

Desarrollo y validación de una escala de percepción de riesgo de COVID-19 en Perú
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Zeladita-Huaman, Jhon Alex

; Franco-Chalco, Eduardo

; Zegarra-Chapoñan, Roberto

; Iguiñiz-Romero, Ruth

; Amemiya-Hoshi, Isabel

Revista Peruana de Medicina Experimental y Salud Publica

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Abr 2023, Volume 40 Nº 2 Páginas 170 - 178

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

https://doi.org/10.17843/rpmesp.2023.402.12289

Concha bullosa and nasal septum by tomographic study; experience at the General Hospital of Mexico Eduardo Liceaga
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Vargas-Hernández, Susana I.

; Flores-Limas, Sanjuanita

; Romero-Cabello, Raúl

; Vega-Gutiérrez, Alejandro E.

; Ramos-Pacheco, Víctor H.

; Amancio-Chassin, Octavio

Revista médica del Hospital General de México

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Mar 2023, Volume 86 Nº 1 Páginas 17 - 22

Resumo: En | Texto: En | PDF: En

Abstract Introduction: Nasal septal deviation is defined as any bending of the septal contour observable on coronal computed tomography (CT) scans and is present in more than half of the population. Concha bullosa (CB) is defined as persistent pneumatisation of the middle turbinate. The purposes of this study are to identify its frequency, as well as its relationship with the deviation of the nasal septum in the population that attends the HGMEL and to propose a radiological classification according to its size and location in relation to the degree of turbinate obstruction. Method: Osteomeatal CT scans performed during one year (January-December 2020) were analysed. All cases presented deviation of the nasal septum. We use the Bolger and Calvo-Henriquez classifications and propose a classification according to the maximum size of the extension in the coronal plane (General Hospital of Mexico Eduardo Liceaga [HGMEL] Classification). Results: Of 142 CT scans of nasal sinuses, 99 were excluded because they did not present CB; as for the remaining 43 (30.28%) subject to this analysis, 27 corresponded to women (62.7%). The incidence of unilateral type CB was 65.12% and that of the bilateral type of 34.88%, with left unilateral CB in 57.14% of cases. The most frequent forms were type 2 (lamellar) with the Bolger classification, type I with the Calvo-Henríquez classification, and grade 1 according to the HGMEL classification. Conclusion: The proposed classification is based on the involvement of the middle turbinate caused by the deviation of the septum due to its anatomical and physiological importance. It is important as a surgical reference and can be easily studied on the preoperative CT scan.

https://doi.org/10.24875/hgmx.22000027

Complementing Eastern Pacific Green Turtle Population Monitoring With Local Ecological Knowledge: Baseline Assessment of Chelonia mydas Surrounding Parque Nacional Zona Marina from The Archipiélago Espíritu Santo, Baja California Sur, Mexico
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Robles, Chanel Sylvana

; Fernández-Sanz, Helena

; Batchelor, Heidi

; Brazier, Ernest

; Mancini, Agnese

; Oceguera Camacho, Karen

; Lucero Romero, Jesús Salvador

; Reséndiz, Eduardo

Revista latinoamericana de herpetología

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Mar 2023, Volume 6 Nº 1 elocation e609

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

Resumen Para una mejor comprensión del estado actual de la población de tortuga verde del Pacífico oriental, se necesita una evaluación espacial de su presencia y abundancia en sus hábitats frecuentados. Este estudio tiene como objetivo desarrollar un marco a partir del cual se podría realizar un estudio de referencia centrado en las tortugas verdes del Pacífico oriental que rodean las aguas de Parque Nacional Zona Marina del Archipiélago Espíritu Santo. Se utilizaron dos años de datos y una encuesta de investigación enfocada en el Conocimiento Ecológico Local (CEL) de guías de ec oturismo que operan en La Paz, Baja California Sur, México. Debido al protocolo de la Junta de Revisión Institucional (IRB) de la Universidad de California y al pequeño tamaño de la muestra de los participantes de la encuesta, los datos de la encuesta no se pueden usar para extrapolar a la población de operadores de ecoturismo en La Paz. Aunque estudios anteriores han integrado LEK de los pescadores, este es el primer estudio que incluye LEK del sector del ecoturismo para informar los esfuerzos de conservación de la tortuga verde del Pacífico oriental en México. Los resultados de este proyecto contribuirán a un mejor entendimiento y una mayor comprensión de cómo esta especie utiliza esta área.

Abstract To improve analysis of the current Eastern Pacific Green (EPG) turtle population status, a spatial assessment is needed on their presence and frequency in their frequented habitats. This study aims to develop a framework from which a baseline study could be undertaken focused on EPG turtles surrounding the waters of Parque Nacional Zona Marina from the Archipiélago Espíritu Santo. Two years of data and a research survey focused on Local Ecological Knowledge (LEK) from ecotourism guides operating out of La Paz, BCS, México were used. Due to the University of California’s Institutional Review Board’s (IRB) protocol and small sample size of survey participants, survey data may not be used to extrapolate to the population of ecotourism operators in La Paz. Although past studies have integrated LEK from fishers, this is the first study to introduce LEK from the ecotourism sector to inform EPG turtle conservation efforts in México. The results from this project will contribute to a better understanding and further insight of how this species utilizes this area.

https://doi.org/10.22201/fc.25942158e.2023.01.609

10.

Cardiac Magnetic Resonance and Positron Emission Tomography in the Diagnosis and Follow-Up of Acute Rheumatic Fever - Case Report
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Salazar, David

; Romero, Cristhian Espinoza

; Lopes, Mariana Pezzute

; Branco, Carlos Eduardo de Barros

; Soares Junior, José

; Santis, Antonio de

; Sampaio, Roney Orismar

; Tarasoutchi, Flávio

International Journal of Cardiovascular Sciences

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2023, Volume 36 elocation e20210093

Resumo: En | Texto: En | PDF: En

https://doi.org/10.36660/ijcs.20210093

11.

Structure, biomass, and secondary production of benthic macroinvertebrates in subtropical Andean rivers
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HANKEL, GUILLERMO EDUARDO

; NIETO, CAROLINA

; ROMERO, FÁTIMA

; GULTEMIRIAN, MARÍA LOURDES

; REYNAGA, MARÍA CELINA

; TABOADA, MARÍA DE LOS Á.

; MARTÍN, PAOLA ALEJANDRA R.

; RODRÍGUEZ, JOSÉ SEBASTIÁN

; MANZO, VERÓNICA

; MOLINERI, CARLOS

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Nº 1 elocation e20220095

Resumo: En | Texto: En | PDF: En

Abstract Secondary production is the formation of heterotrophic biomass across time, which integrates several important ecological processes that affect the life of organisms, populations, communities and ecosystems, but its study has poor developed in South America. The objectives of this work were to describe the diversity of benthic macroinvertebrate assemblages in terms of abundance and biomass, and to quantify their secondary production for the first time in Andean rivers. A quantitative sampling scheme was implemented, using a Surber sampler, in three forested streams. Physical-chemical variables, nutrients, organic matter and chlorophyll were measured also. The macroinvertebrates were separated and identified mostly at the species level. Each taxon was assigned to a functional feeding group. Secondary production was estimated for 38 taxa, mostly Diptera, Trichoptera, Coleoptera, and Ephemeroptera. The annual production varied from 3769 to 13916 mg dry mass m-2 y-1. Most abundant taxa were also those with higher production, dominated by Ephemeroptera (Baetidae), Trichoptera (Hydropsychidae) and Diptera (Chironomidae and Simuliidae). Density, biomass, and production of collectors and predators were much higher than the other feeding groups. We expect that our results will be useful to evaluate the effects on stream functioning produced by global warming and other anthropogenic disturbances in our region.

https://doi.org/10.1590/0001-3765202320220095

12.

Solubility of different salts used in the control of the water activity of foods
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Martins, Maria Julia Neves

; Sanches, Marcio Augusto Ribeiro

; Polachini, Tiago Carregari

; Oliveira, Eduardo Basílio de

; Coimbra, Jane Selia dos Reis

; Telis-Romero, Javier

Ciência e Agrotecnologia

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2023, Volume 47 elocation e018722

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

ABSTRACT Saturated salt solutions produce environments with specific relative humidities used in several applications, such as determining water sorption isotherms of foods. However, the preparation of saturated solutions requires knowledge of solubility data. Thus, the objective of this work was to determine the solubility of 14 salts: lithium bromide (LiBr), lithium chloride (LiCl), lithium iodide (LiI), magnesium chloride (MgCl2), sodium iodide (NaI), potassium carbonate (K2CO3), magnesium nitrate (Mg(NO3)2), sodium bromide (NaBr), potassium iodide (KI), sodium chloride (NaCl), ammonium sulfate ((NH4)2SO4), potassium chloride (KCl), potassium nitrate (KNO3), and potassium sulfate (K2SO4) in the temperature range of 275.15 to 363.15 K at 101.3 kPa. The apparatus for the solubility determination consists of a jacketed glass cell and a magnetic stirrer. Furthermore, polynomial and exponential empirical models were fitted to the observed data to determine salt solubilities. Salt solubilities ranged from 7.39 to 80.41 g of salt·(100 g of solution)-1. Sodium iodide (NaI) presented the highest (p<0.05) solubility, up to 343.15 K, and lithium iodide (LiI) up to 363.15 K. The specific equilibrium moistures afforded by saturated saline solutions were associated with water activity data. A general mathematical model to determine the solubility of different salts was not obtained because the dissolution behaviors of each salt are distinct. However, the availability of solubility data of saline solutions covering a wide range of temperatures is helpful since the salts have different behavior.

RESUMO Soluções salinas saturadas produzem ambientes com umidades relativas específicas utilizadas em diversas aplicações, como na determinação de isotermas de sorção de água de alimentos. No entanto, a preparação de soluções saturadas requer conhecimento de dados de solubilidade. Assim, o objetivo deste trabalho foi determinar a solubilidade de 14 sais: brometo de lítio (LiBr), cloreto de lítio (LiCl), iodeto de lítio (LiI), cloreto de magnésio (MgCl2), iodeto de sódio (NaI), carbonato de potássio (K2CO3), nitrato de magnésio (Mg(NO3)2), brometo de sódio (NaBr), iodeto de potássio (KI), cloreto de sódio (NaCl), sulfato de amônio ((NH4)2SO4), cloreto de potássio (KCl), nitrato de potássio (KNO3) e sulfato de potássio (K2SO4) na faixa de temperatura de 275,15 a 363,15 K a 101,3 kPa. O aparelho para a determinação da solubilidade consiste em uma célula de vidro encamisada e um agitador magnético. Além disso, modelos empíricos polinomiais e exponenciais foram ajustados aos dados observados para determinar solubilidades de sal. A solubilidade do sal varia de 7,39 a 80,41 g de sal·(100 g de solução)-1. Iodeto de sódio (NaI) apresentou o maior (p<0.05) solubilidade, até 343,15 K, e iodeto de lítio (LiI) até 363,15 K. Específicas umidades de equilíbrio proporcionadas pelas soluções salinas saturadas foram associadas aos dados de atividade de água. Um modelo matemático geral para determinar a solubilidade de diferentes sais não foi obtido porque os comportamentos de dissolução de cada sal são distintos. No entanto, a disponibilidade de dados de solubilidade de soluções salinas cobrindo uma ampla faixa de temperaturas é útil, pois os sais têm comportamento diferente.

https://doi.org/10.1590/1413-7054202347018722

13.

COVID-19 outcomes in people living with HIV: Peering through the waves
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Sales, Thaís Lorenna Souza

; Souza-Silva, Maíra Viana Rego

; Delfino-Pereira, Polianna

; Neves, João Victor Baroni

; Sacioto, Manuela Furtado

; Assis, Vivian Costa Morais de

; Duani, Helena

; Oliveira, Neimy Ramos de

; Sampaio, Natália da Cunha Severino

; Ramos, Lucas Emanuel Ferreira

; Schwarzbold, Alexandre Vargas

; Jorge, Alzira de Oliveira

; Scotton, Ana Luiza Bahia Alves

; Castro, Bruno Mateus de

; Silva, Carla Thais Cândida Alves da

; Ramos, Carolina Marques

; Anschau, Fernando

; Botoni, Fernando Antonio

; Grizende, Genna Maira Santos

; Nascimento, Guilherme Fagundes

; Ruschel, Karen Brasil

; Menezes, Luanna Silva Monteiro

; Castro, Luís César de

; Nasi, Luiz Antônio

; Carneiro, Marcelo

; Godoy, Mariana Frizzo de

; Nogueira, Matheus Carvalho Alves

; Guimarães Júnior, Milton Henriques

; Ziegelmann, Patricia Klarmann

; Almeida, Rafaela Charão de

; Francisco, Saionara Cristina

; Silveira Neto, Sidney Teodoro

; Araújo, Silvia Ferreira

; Avelino-Silva, Thiago Junqueira

; Aliberti, Márlon Juliano Romero

; Pires, Magda Carvalho

; Silva, Eduardo Sérgio da

; Marcolino, Milena Soriano

Clinics

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2023, Volume 78 elocation 100223

Resumo: En | Texto: En | PDF: En

Abstract Objective To evaluate clinical characteristics and outcomes of COVID-19 patients infected with HIV, and to compare with a paired sample without HIV infection. Methods This is a substudy of a Brazilian multicentric cohort that comprised two periods (2020 and 2021). Data was obtained through the retrospective review of medical records. Primary outcomes were admission to the intensive care unit, invasive mechanical ventilation, and death. Patients with HIV and controls were matched for age, sex, number of comorbidities, and hospital of origin using the technique of propensity score matching (up to 4:1). They were compared using the Chi-Square or Fisher's Exact tests for categorical variables and the Wilcoxon for numerical variables. Results Throughout the study, 17,101 COVID-19 patients were hospitalized, and 130 (0.76%) of those were infected with HIV. The median age was 54 (IQR: 43.0;64.0) years in 2020 and 53 (IQR: 46.0;63.5) years in 2021, with a predominance of females in both periods. People Living with HIV (PLHIV) and their controls showed similar prevalence for admission to the ICU and invasive mechanical ventilation requirement in the two periods, with no significant differences. In 2020, in-hospital mortality was higher in the PLHIV compared to the controls (27.9% vs. 17.7%; p = 0.049), but there was no difference in mortality between groups in 2021 (25.0% vs. 25.1%; p > 0.999). Conclusions Our results reiterate that PLHIV were at higher risk of COVID-19 mortality in the early stages of the pandemic, however, this finding did not sustain in 2021, when the mortality rate is similar to the control group.

https://doi.org/10.1016/j.clinsp.2023.100223

14.

Insights into variations of seasonal and daily soil temperatures under the effect of biocrusts in central-western Argentina
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Navas-Romero, Ana L.

; Herrera-Moratta, Mario A.

; Martinez-Carretero, Eduardo

; Vento, Barbara

; Fernández-Belmonte, María C.

Acta botánica mexicana

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2023, Nº 130 elocation e2212

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

Abstract: Background and Aims: Biocrusts play an essential role on the earth’s surface and have a direct influence on soil parameters. Their effects on soil temperature are considered one of the most important because they affect ecological and hydrological processes, as well as the diversity of natural ecosystems. Although there are several studies concerning biocrust effects on the soil surface, investigations about the effect of the biocrust on soil temperature are still scarce. Our objective was to evaluate the influence of biocrusts on soil temperature conditions in drylands of central-western Argentina. Methods: Temperature values were recorded in the Monte phytogeographic region in the central-western part of Argentina, in three sites, during the dry and wet seasons in 2017-2018. We collected samples from a total of 30 randomly selected plots. We recorded daily temperatures values in two paired plots with crusted and uncrusted zones using a calibrated data logger Ibutton. The sampling took 18 days in total, three days on each site. Key results: Our results indicate that biocrusts produce a change in micro-soil temperatures. Areas in which biocrusts are present show a temperature reduction both in the wet and dry seasons. This effect is observed in the three studied sites. Temperature reduction varies according to the time of the day, study site and season. The morning, noon, and afternoon recorded the highest mean temperatures. Conclusions: The presence of biocrusts reduces soil temperatures in drylands of central-western Argentina. Large differences in mean temperature values between crusted and uncrusted zones were observed. The thermal reduction was more notorious in the hyper-arid site. How they affect their surrounding environment can be related to multiple factors, such as the composition of the microphytic community, the local climate and environmental conditions.

Resumen: Antecedentes y Objetivos: Las costras biológicas del suelo juegan un papel esencial en la superficie terrestre y tienen una influencia directa en los parámetros del suelo. Sus efectos sobre la temperatura del suelo se consideran uno de los más importantes debido a que afectan los procesos ecológicos e hidrológicos, así como la diversidad de los ecosistemas naturales. Aunque existen varios estudios sobre los efectos de la costra biológica en la superficie del suelo, las investigaciones sobre el efecto de la costra biológica en la temperatura del suelo aún son escasas. Nuestro objetivo fue evaluar la influencia de las costras biológicas en las condiciones de temperatura del suelo en zonas áridas del centro-oeste de Argentina. Métodos: Se registraron valores de temperatura en la región fitogeográfica del Monte en la parte centro-oeste de Argentina, en tres sitios, durante las estaciones seca y húmeda de 2017 y 2018. Colectamos muestras de un total de 30 parcelas seleccionadas al azar. Registramos valores de temperatura diarios en dos parcelas emparejadas con zonas con costras biológicas y sin costras biológicas utilizando un registrador de datos calibrado tipo Ibutton. El muestreo se llevó a cabo durante un total de 18 días, tres días en cada sitio. Resultados claves: Nuestros resultados indican que las costras biológicas producen un cambio en las temperaturas microambientales del suelo. Las áreas donde están presentes las costras biológicas muestran una reducción de la temperatura tanto en las estaciones húmedas como en las secas. Este efecto se observa en los tres sitios estudiados. La reducción de la temperatura varía de acuerdo con la hora del día, el sitio de estudio y la estación del año. La mañana, el mediodía y la tarde registraron las temperaturas medias más altas. Conclusiones: La presencia de costras biológicas reduce las temperaturas del suelo en las zonas áridas del centro-oeste de Argentina. Se observaron grandes diferencias en los valores medios de temperatura entre las zonas con costras biológicas y las zonas sin costras biológicas. La reducción térmica fue más notable en el sitio hiperárido. Cómo afectan su entorno circundante puede estar relacionado con múltiples factores, como la composición de la comunidad microfítica, el clima local y las condiciones ambientales.

https://doi.org/10.21829/abm130.2023.2212

15.

Síndrome de Mayer-Rokitansky-Küster-Hauser
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Mina Romero, Elizabeth

; Álvarez Domínguez, Sergio

; Valencia Arana, Carlos Andrés

; Murúa Millán, Oscar Abelardo

; Piña Ramírez, Luis Eduardo

; Gómez Pérez, María de Guadalupe

Acta médica Grupo Ángeles

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Dez 2022, Volume 20 Nº 4 Páginas 353 - 355

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

Abstract: Introduction: Mayer-Rokitansky-Küster-Hauser syndrome (also known as müllerian aplasia) is a rare congenital anomaly of the tract genital, of unknown etiology, characterized by the congenital absence of the uterus, cervix and upper portion of the vagina. Clinical case: A 16-year-old female patient with primary amenorrhea, normal hormonal profile, adequate sexual development Tanner 5, 46 XX karyotype. A magnetic sound is performed where the absence of the uterus and the proximal two-thirds of the vagina are detected. Conclusion: Magnetic resonance is a diagnostic test that provides great anatomical detail of the uterus and vagina, allowing to correctly characterize and classify Müllerian anomalies.

Resumen: Introducción: El síndrome de Mayer-Rokitansky-Küster-Hauser (también conocido como aplasia mülleriana) es una rara anomalía congénita del tracto genital, de etiología desconocida, se caracteriza por la ausencia congénita del útero, cérvix y porción superior de la vagina. Caso clínico: Paciente femenino de 16 años de edad que presenta amenorrea primaria, perfil hormonal normal, desarrollo sexual adecuado Tanner 5, cariotipo 46 XX. Se realiza resonancia magnética, donde se detecta ausencia de útero y de los dos tercios proximales de la vagina. Conclusión: La resonancia magnética es una prueba diagnóstica que brinda gran detalle anatómico del útero y vagina, permitiendo caracterizar y clasificar correctamente a las anomalías müllerianas.

https://doi.org/10.35366/107122

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