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Numerical study on the serviceability performance of reinforced glulam beams with different steel arrangements
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Peixoto, Lucas Sacramoni

; Soriano, Julio

; Vicente, William Martins

; Mascia, Nilson Tadeu

Ambiente Construído

Journal Metrics
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- SciELO Analytics

dec 2024, Volume 24 elocation e137140

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

Resumo As vigas de madeira lamelada colada (MLC) fabricadas com barras de aço coladas podem alcançar melhorias no seu desempenho mecânico e os efeitos da disposição das barras de aço na seção transversal são de interesse tecnológico. Esta pesquisa objetivou a avaliação do comportamento mecânico de vigas com reforços simétricos (zonas de compressão e de tração) e vigas com reforços assimétricos (zona de compressão), sob condições de carregamento impostas ao estado limite de serviço. Portanto, vigas de MLC com taxas de reforço variando de 0,5% a 4% foram simuladas pelo método dos elementos finitos. Em relação às vigas sem reforços, as flechas das vigas reforçadas assimetricamente resultaram até 31,5% menores e, as vigas com reforços simétricos foram mais eficientes, cuja redução das flechas foi de até 45%. Comparativamente ao arranjo simétrico das barras, a distribuição assimétrica proporcionou uma redução de até 10,5% na tensão normal da zona de compressão da MLC. A armadura disposta de forma assimétrica contribuiu efetivamente para o aumento da rigidez da viga e foi mais eficiente na redução das tensões normais na zona compressiva, evitando com isso o escoamento inicial da madeira. (MLC tecnológico zonas tração compressão, , compressão) serviço Portanto 05 0 5 0,5 4 finitos 315 31 31,5 eficientes 45 45% 105 10 10,5 compressiva 0, 3 31, 1 10,

Abstract Glued laminated timber (glulam) beams manufactured with glued steel bars can achieve improvements in their mechanical performance and the effects of the arrangement of steel bars in the cross-section are of technological interest. This study aimed to evaluate the mechanical behavior of beams with symmetric reinforcements (compression and tension zones) and beams with asymmetric reinforcements (compression zone), under loading imposed at the serviceability limit state. To achieve this goal, glulam beams with reinforcement ratios ranging from 0.5% to 4% were simulated using the finite element method. When compared to the nonreinforced beams it was found for the deflections that the asymmetric reinforcements provided reductions of up to 31.5% and the cases with symmetric reinforcements were more efficient, with deflection reductions of up to 45%. In comparison to the symmetric arrangement of the bars, the asymmetric distribution provided a reduction of up to 10.5% in the normal stress of the glulam beam compression zone. The asymmetrically arranged reinforcement effectively contributed to increasing the stiffness of the beam and was more efficient in reducing normal stresses in the compressive zone, thus preventing the initial yielding of the wood. (glulam crosssection cross section interest zones zone , zone) state goal 05 0 5 0.5 4 method 315 31 31.5 45 45% 105 10 10.5 wood 0. 3 31. 1 10.

https://doi.org/10.1590/s1678-86212024000100759

Advances in methodologies to assess wind actions in plastic-covered greenhouses plasticcovered plastic covered
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Soriano, Julio

; Shiguemoto, Ana Carolina Gigli

; Vieira Neto, José Gabriel

Scientia Agricola

Journal Metrics
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2024, Volume 81 elocation e20220276

Abstract: En | Text: En | PDF: En

ABSTRACT The technology provided by greenhouses is essential for protecting crops sensitive to bioclimatic adversities and for improving agricultural production indexes. However, the need to know the exact interaction between the flexible coating and the structure under wind action has motivated new studies. The objective was to perform an in-depth review of the scientific and technological advances regarding methodologies to obtain parameters related to wind actions that are essential for the structural safety of greenhouses. This study showed the relevance of experimental methods; however, the limitations of the study are diverse, as field experiments require the construction and modifications of a prototype, which demand time and financial resources. Experiments in wind tunnels with models on a reduced scale have contributed significantly, as it allows to control the wind flow; however, in plastic-covered greenhouses, discrepancies occur due to the impossibility to represent the aeroelasticity of the construction. Modeling via computational fluid dynamics (CFD) has proven to be a solution for extrapolating limitations in experimental methods by facilitating changes in the construction model and wind flow. In addition to pure turbulence models, studies on hybrid turbulence models (Scale-Resolving Simulation) must be deepened to obtain greater accuracy of pressure coefficients. The complexity of the subject and the need for new contributions to plastic-covered greenhouse projects are a reality, which outlines a promising horizon for research development in the rural construction sector. indexes However indepth depth however diverse prototype resources significantly flow plasticcovered plastic covered CFD (CFD ScaleResolving Scale Resolving Simulation coefficients reality sector

https://doi.org/10.1590/1678-992x-2022-0276

Mechanical performance analysis in bending of glulam beams reinforced with synthetic Vectran fibres
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Vilela, Ramon

; Mascia, Nilson Tadeu

; Donadon, Bruno Fazendeiro

; Soriano, Julio

Ambiente Construído

Journal Metrics
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dec 2023, Volume 23 N. 4 Pages 289 - 302

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

Resumo O uso de fibras sintéticas como reforço em madeira lamelada colada (MLC) tem a finalidade de melhorar o desempenho mecânico de vigas, alterando o mecanismo de ruptura de frágil para dúctil. Este artigo tem por objetivo investigar resultados experimentais de flexão estática de vigas MLC reforçadas com fibras sintéticas e comparar com resultados obtidos tanto por método analítico quanto por numérico com o auxílio do software Ansys ® . As vigas de MLC foram produzidas com Pinus elliottii, uma espécie de madeira de baixa resistência, colada com adesivos de emulsão polimérica de isocianato (EPI) e reforçadas com tecido de fibras sintéticas de Vectran ® posicionado na face inferior da viga. Este tipo de fibra ainda não é largamente utilizado para reforço estrutural. Foi realizado ensaio de flexão a três pontos com carregamento no regime elástico das vigas de MLC. Os resultados obtidos mostram aproximações aceitáveis do deslocamento vertical e tensões normais devido à flexão da viga com reforço de oito camadas de tecido sintético, ambos a favor da segurança, além do expressivo aumento de rigidez da viga ao se introduzir o reforço de fibras de Vectran ® . (MLC dúctil elliottii resistência EPI (EPI estrutural sintético segurança

Abstract Synthetic fibres applied as reinforcement in glued laminated timber (glulam) intend to increase the mechanical performance of beams, changing the brittle to ductile mechanical behaviour of wooden beams. This paper investigates the experimental results of glulam beams reinforced with synthetic fibre subjected to bending and compares them with those obtained by both an analytical method and the numerical method using the Ansys® software. Glulam beams were produced with a low-grade strength class wood species (Pinus elliottii) glued with an adhesive of emulsion isocyanate polymeric and reinforced with Vectran® synthetic fibres, positioned on the bottom of the beam. This type of fibre is not yet widely used for structural reinforcement. A three-point bending test was performed for loading in the elastic regime of the glulam beams. The results obtained indicate acceptable approximations of vertical displacements and normal stresses due to the bending of the beam with eight layers of synthetic fabric, both favourable to structural safety, in addition to the significant increase in stiffness of glulam with the introduction of Vectran® fibre reinforcement. (glulam Ansys software lowgrade low grade Pinus elliottii Vectran threepoint three point fabric safety

https://doi.org/10.1590/s1678-86212023000400704

Evolución de menores diagnosticados con trastorno de déficit de atención e hiperactividad. Estudio de seguimiento en una muestra española
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Viuda-Suárez, M. Eugenia de la

; Alonso-Lorenzo, Julio C.

; Ruiz-Jiménez, Francisco J.

; Luciano-Soriano, Carmen

Gaceta médica de México

Journal Metrics
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jun 2023, Volume 159 N. 3 Pages 199 - 206

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

Resumen Antecedentes: El trastorno de déficit de atención e hiperactividad (TDAH) constituye una condición crónica con riesgos asociados a largo plazo. Objetivo: Analizar el estado clínico, la ocupación y las dificultades de la vida diaria de dos cohortes de niños con diagnóstico de TDAH (2004 y 2009) después cinco y 10 años. Material y método: Estudio descriptivo y longitudinal de la base de datos WOMI correspondiente a Oviedo, Asturias, España. Se incluyeron niños detectados con TDAH por su pediatra de atención primaria. Se solicitó una entrevista telefónica voluntaria de seguimiento. Las variables de resultado fueron estado clínico y ocupacional al momento de la entrevista, síntomas de TDAH según SNAP-IV y Cuestionario de Fortalezas y Dificultades (SDQ). Resultados: La muestra entrevistada estuvo formada por 95 sujetos, de los cuales 71 respondieron a los cuestionarios SNAP-IV y SDQ; 60.7 % de la muestra no recibía tratamiento en el momento del seguimiento, 4.7 % no tenía ninguna ocupación, 25.4 % mantenía síntomas globales de TDAH en nivel superior al punto de corte clínico y 66.2 % presentaba dificultades con interferencia moderada. Conclusiones: Los síntomas del TDAH disminuyen conforme las personas crecen. Las comorbilidades de salud mental y el abandono académico no se confirmaron en la muestra.

Abstract Background: Attention deficit/hyperactivity disorder (ADHD) is a chronic condition with long-term associated risks. Objective: To analyze the clinical status, occupation, and daily life difficulties of two cohorts of children diagnosed with ADHD (2004 and 2009) after five and 10 years. Material and method: Descriptive, longitudinal study using the WOMI database corresponding to Oviedo, Asturias, Spain. Children with ADHD detected by their primary care pediatrician were included. A voluntary follow-up telephone interview was requested. Outcome variables were current clinical and occupational status, ADHD symptoms according to SNAP-IV, and Strengths and Difficulties Questionnaire (SDQ). Results: The interviewed sample consisted of 95 subjects, out of whom 71 answered the SNAP-IV and SDQ questionnaires; 60.70% of the sample did not receive treatment at the time of follow-up, 4.7% had no occupation, 25.40% still had ADHD global symptoms above the clinical cutoff point, and 66.2% had difficulties with moderate interference. Conclusions: ADHD symptoms decline as people grow up. Mental health comorbidities and academic dropout were not confirmed in the sample.

https://doi.org/10.24875/gmm.23000046

Impact of coronavirus infection on anxiety and quality of life in individuals with a kidney transplant
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Cabana, Araceli Faraldo

; Hernán, Verónica Gimeno

; Jiménez, María Belén Peix

; Cruz, Ana María Fernández

; Arredondo, Sara Asensio

; Montesinos, Juan Vicente Beneit

; García, Ignacio Zaragoza

; Fructuoso, Ana Sánchez

; Soriano, Ismael Ortuño

Revista de nefrologia, dialisis y trasplante

Journal Metrics
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dec 2022, Volume 42 N. 4 Pages 2 - 2

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

RESUMEN Introducción: Las personas con un trasplante renal forman una población vulnerable para la infección por SARS-CoV-2, lo que las puede llevar a sufrir consecuencias psicológicas que aún no han sido estudiadas. Objetivos: Comparar la incidencia de ansiedad y el nivel de calidad de vida, en personas con un trasplante renal, que se han contagiado de SARS-CoV-2 frente a los que no se han contagiado; así como describir la incidencia de contagios y la mortalidad en la población a estudio. Material y Métodos: Estudio retrospectivo de cohortes prospectivas. Durante la segunda ola de la pandemia (del 1 de julio al 5 de diciembre de 2020) se compararon los datos de la cohorte de casos (n=22) y la cohorte de no casos (n=36) en cuanto a ansiedad estado y ansiedad rasgo (medidas con el STAI), la calidad de vida (medida mediante el KTQ) y la mortalidad, como variables de interés principales. Resultados: La población a estudio fue de 601 personas trasplantadas, con una edad media de 61.7 años (DE: 12.8), 61.9% (372) fueron hombres. Se infectaron de SARS-CoV-2 el 12.1% (73) y fallecieron 6.2% (37), siendo el 52.9% (18) por SARSCoV- 2. Esto supone una tasa de mortalidad del 2.9% y una tasa de letalidad del 24.7%. Durante la segunda ola se infectaron un 6.2% (37). La calidad de vida media fue de 4.1 (DE: 0.9). En los infectados la media fue 4.2 (DE: 0.8), y en los no infectados 4 (DE: 1). Mientras que la media de ansiedad fue de 49 (DE:24.3); siendo 54.6 (DE: 25.7) en los infectados y 45.4 (DE: 23.1) en no infectados. No se encontraron diferencias estadísticamente significativas. Conclusiones: Las personas con un trasplante renal tienen afectada su calidad de vida y presentan altos niveles de ansiedad, independientemente de si han pasado o no la infección por SARS-CoV-2.La tasa de mortalidad durante el periodo analizado fue baja, mientras que la letalidad fue alta y ambas disminuyeron de la primera a la segunda ola de la infección.

ABSTRACT Background: The consequences of SARSCoV- 2 infection on the mental health of kidney transplant recipients have not yet been investigated. Objectives: This study compares anxiety and quality of life in individuals with a kidney transplant who did or did not test positive for coronavirus. Design: Retrospective study of two prospective cohorts. Participants: Kidney transplant recipients under follow-up in a Spanish tertiary teaching hospital who tested positive for coronavirus (cases); and consecutive kidney recipients who had not suffered the infection (not-cases). Methods: Mortality and case fatality data were compared between the two cohorts for the two pandemic waves. For the second wave (July 1 to December 5, 2020), the data compared between cases (n=22) and not-cases (n=36) were state and trait anxiety (STAI), kidney transplant-related quality of life (KTQ), and mortality as the main outcome variables. Results: 601 transplanted persons of mean age 61.7 years (SD 12.8), 61.9% men. 12.1% (n=73) tested SARS-CoV-2-positive over the first two pandemic waves with a mortality of 2.9% and case fatality of 24.7%. Over the second wave, the mean quality of life score was 4.1 (SD 0.9) and the overall anxiety score was 49 (SD 24.3) for the two cohorts, which did not vary in terms of the impacts of these measures on the descriptive variables examined. Conclusions: Quality of life is invariably affected, and levels of anxiety are high regardless of whether or not they have had a SARS-CoV-2 infection. Over the period examined, mortality was low while coronavirus case fatality was high.

Ingesta proteica en mujeres posmenopáusicas residentes en la comunidad y su relación con la sarcopenia
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Guillamón Escudero, Carlos

; Soriano, José M

; Diago Galmés, Ángela

; Tenías Burillo, José M

; Fernández Garrido, Julio

Nutrición Hospitalaria

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dec 2021, Volume 38 N. 6 Pages 1209 - 1216

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

Abstract Objectives: the general aging of the population is related to the increase in the prevalence of sarcopenic disease; especially among older women, this pathology is closely related to nutrition and specifically to protein consumption in older adults. The aim of our study was to evaluate the possible relationship between a low protein intake and a higher prevalence of sarcopenic disease, a worse dietary pattern, and lower physical performance in postmenopausal women living in the community. Material and methods: the study was carried out in a total of 164 independent women over 65 years of age, recruited from a municipal social center in Valencia (Benimaclet). The presence of sarcopenic pathology was evaluated using the latest algorithm published by EWGSOP2, and the intake of nutrients through a three-day dietary record. Physical performance was evaluated through the iPaq-e questionnaire, as well as the SPPB test and the 4-meter gait speed test. Results: the total sample comprised 164 women with a mean age of ± 72 years; 26.2 % of the sample had a protein intake lower than recommended by the FAO/WHO; 25.6 % of the women presented some stage of sarcopenia; regarding the prevalence of sarcopenic obesity, 12.2 % of the sample was affected by this disease. Significant relationships were found between protein consumption and the prevalence of sarcopenia (p = 0.021) and sarcopenic obesity (p = 0.043). Significant related differences were found between the majority of macronutrients and micronutrients under study and protein consumption. No relationship was found between protein intake and physical performance. Conclusions: protein consumption in most of the women studied (73.8 %) was higher than the daily recommendations established by the FAO/WHO. There was a significant relationship between the prevalence of sarcopenia and sarcopenic obesity, and low protein intake. Higher protein intake was associated with a higher energy intake pattern. No relationship was found between protein intake and physical performance of the participants.

Resumen Objetivos: el envejecimiento general de la población se encuentra relacionado con el aumento de la prevalencia de la enfermedad sarcopénica, especialmente entre las mujeres mayores. Esta patología se encuentra estrechamente relacionada con la nutrición y, concretamente, con el consumo proteico en los adultos mayores. El objetivo de nuestro estudio fue evaluar la posible relación entre un bajo consumo de proteínas y una mayor prevalencia de la enfermedad sarcopénica, un peor patrón dietético y un menor rendimiento físico en mujeres posmenopáusicas residentes en la comunidad. Material y métodos: el estudio se realizó en un total de 164 mujeres mayores de 65 años, independientes, reclutadas en un centro social municipal de Valencia (Benimaclet). La presencia de sarcopenia fue evaluada utilizando el último algoritmo publicado por el EWGSOP2, y la ingesta de nutrientes a través de un registro dietético de tres días. El rendimiento físico fue evaluado a través del cuestionario iPaq-e, así como el test SPPB y el test de velocidad de la marcha de 4 metros. Resultados: la muestra total comprendió un total de 164 participantes con una edad media de ± 72 años. Un 26,2 % de la muestra presentaban una ingesta de proteínas inferior a la recomendada por la FAO/OMS. El 25,6 % de las mujeres presentaban algún estadio de sarcopenia y, en cuanto a la prevalencia de la obesidad sarcopénica, un 12,2 % de la muestra se encontró afectada por dicha enfermedad. Se encontraron relaciones significativas entre el consumo de proteína y la prevalencia de la sarcopenia (p = 0,021) y la obesidad sarcopénica (p = 0,043). Se encontraron diferencias significativas relacionadas entre la mayoría de macronutrientes y micronutrientes a estudio y el consumo proteico. No se encontró ninguna relación entre la ingesta proteica y el rendimiento físico. Conclusiones: el consumo de proteínas en la mayoría de las mujeres estudiadas (73,8 %) fue superior a las recomendaciones diarias establecidas por la FAO/OMS. Existió una relación significativa entre la prevalencia de la sarcopenia y de la obesidad sarcopénica y un consumo bajo de proteínas. Un mayor consumo de proteínas se asoció con un patrón de ingesta energética superior. No se encontró relación alguna entre la ingesta proteica y el rendimiento físico de las participantes.

https://doi.org/10.20960/nh.03690

Odonata (Insecta) como indicador de la calidad ambiental en humedales de montaña neotropicales
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López-Díaz, Juan Antonio

; Gómez, Benigno

; González-Soriano, Enrique

; Gómez-Tolosa, María

Acta zoológica mexicana

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2021, Volume 37 elocation e3712379

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

RESUMEN Con el fin de evaluar la diversidad del orden Odonata y relacionarla con la calidad del ambiente, en San Cristóbal de Las Casas (Chiapas) se eligieron cuatro humedales de acuerdo con su accesibilidad y permisibilidad. Para la tipología ambiental se consideró, entre otras características, la calidad visual, estimada a través del Índice del Estado de Conservación de Humedales (IECH). Recolectas sistemáticas mensuales de los odonatos adultos fueron realizadas entre julio de 2014 y junio de 2015. Un total de 14 especies, distribuidas en cinco familias y 10 géneros fueron encontradas. El género Argia fue el de mayor riqueza, mientras que Ischnura denticollis y Enallagma rua representaron las especies dominantes. Las Cañadas, humedal con calidad visual subóptima, presentó la mayor diversidad de libélulas al integrar un ambiente lótico. El grado de alteración de la vegetación acuática, como uno de los parámetros evaluados en la calidad visual, fue muy importante en las diferencias encontradas en la diversidad y abundancia de Odonata en los cuatro humedales. María Eugenia y La Kisst catalogados como ambientes con calidad visual óptima y regular, respectivamente, obtuvieron la mayor similitud en su odonatofauna relacionada con las distintas formas de vida de su vegetación acuática y por el tamaño equivalente de estos dos humedales.

ABSTRACT In order to evaluate the diversity of the Odonata order and relate it to environmental quality, in San Cristobal de Las Casas (Chiapas) four wetlands were chosen according to their accessibility and permissibility. For the environmental typology, among other characteristics, the visual quality was considered, estimated through the Index of the State of Conservation of Wetlands (IECH). Systematic monthly collections of adult odonates were carried out between July 2014 and June 2015. A total of 14 species, distributed in five families and 10 genera were found. The genus Argia was the richest, while Ischnura denticollis and Enallagma rua represented the dominant species. Las Cañadas, a wetland with suboptimal visual quality, presented the greatest diversity of dragonflies by integrating a lotic environment. As one of the parameters evaluated in the visual quality, the degree of alteration of the aquatic vegetation was very important in the differences found in the diversity and abundance of Odonata in the four wetlands. Maria Eugenia and La Kisst classified as environments with optimal and regular visual quality, respectively, obtained the greatest similarity in their odonatofauna related to the different life forms of their aquatic vegetation and for the equivalent size of these two wetlands.

https://doi.org/10.21829/azm.2021.3712379 165 downloads

Diarrea nosocomial por Clostridiodes difficile en un hospital de referencia en Lima, Perú
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Castillo-Contreras, Ofelia

; Soriano-Álvarez, César

Acta Médica Peruana

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oct 2020, Volume 37 N. 4 Pages 416 - 425

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

ABSTRACT Objective: to determine frequency, incidence, and to describe clinical and epidemiological characteristics of patients with nosocomial diarrheal disease caused by Clostridioides difficile in Edgardo Rebagliati-Martins National Hospital in Peru, between April to July 2019. Material and methods: this is an observational and cross-sectional study that was performed in Internal Medicine, Intensive Care, Hematology, Gastroenterology, and Emergency services. Active surveillance of patients more than 18-years old who had three or more non-formed stools in a 24-hour period at 48-hours after being admitted to the hospital. A diagnostic algorithm was used, including glutamate dehydrogenase and A and B C. difficile fecal toxins. In case of discordant results, nucleic acid amplification for toxin producing genes tests were performed. Results: out of 107 patients with nosocomial diarrheal disease, 12 were positive for C. difficile, with 11.2% frequency (95% CI: 6.44 - 18.82). One patient was NAP1-BI-027 positive. The maximum incidence was found in the hematology service (5.54 x 10000 patients- day). Seven (7/12, 58.3%) patients were male and average age was 64.58 ± 21.34 years. The most frequently prescribed antibacterial agent prior to the diarrheal disease was meropenem (9/12, 75%). Only two patients had received clindamycin. Most patients (8/12, 66.7%) had an initial non severe episode. Overall mortality was 28% (95% CI: 20.27-37.38) and four deceased patients had C. difficile infection. Conclusions: The frecuency of nosocomial diarrheal disease caused by C. difficile in our institution was lower than that reported in another public hospital in Lima. Rational use of antibacterial agents and preventative measures may explain these findings.

RESUMEN Objetivo: determinar la frecuencia, incidencia y describir las características clínico- epidemiológicas de los pacientes con diarrea nosocomial por Clostridioides difficile en el Hospital Nacional Edgardo Rebagliati Martins en el período abril a julio de 2019. Materiales y métodos: estudio observacional y transversal realizado en los servicios de medicina interna, cuidados intensivos, hematología, gastroenterología y emergencia. Se realizó una vigilancia activa de los pacientes mayores de 18 años con tres o más deposiciones no formadas en 24 horas luego de 48 horas de admisión hospitalaria. Se empleó un algoritmo diagnóstico, que incluyó la glutamato deshidrogenasa y toxina fecal A y B de C. difficile. En caso de resultados discordantes, se realizó la prueba de amplificación de ácidos nucleicos de los genes productores de toxinas. Resultados: de 107 pacientes con diarrea nosocomial, 12 fueron positivos para C. difficile con una frecuencia de 11,2% (IC 95%: 6,44-18,82). Un paciente fue NAP1-BI-027 positivo. La mayor densidad de incidencia fue en hematología (5,54 x 10 000 pacientes-día). Siete (7/12, 58,3%) fueron varones y la edad fue 64,58 ± 21,34 años. El principal antibiótico indicado previo a la diarrea fue meropenem (9/12, 75%). Solo dos pacientes recibieron clindamicina. La mayoría (8/12, 66,7%) tuvo un episodio inicial no grave. La mortalidad general fue 28% (IC 95%: 20,27-37,38) y cuatro fallecidos tuvieron infección por C. difficile. Conclusiones: la frecuencia de diarrea nosocomial por C. difficile en nuestra institución fue menor al reportado previamente en otro hospital público de Lima. El uso racional de antibióticos y las medidas preventivas explicarían estos hallazgos.

https://doi.org/10.35663/amp.2020.374.1051

Static bending of glulam beams manufactured with rubber wood and epoxy adhesive
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Faria, Douglas Lamounier

; Lopes, Thamirys Andrade

; Scatolino, Mário Vanoli

; Soriano, Julio

; Mendes, Lourival Marin

; Guimarães Júnior, José Benedito

Matéria (Rio de Janeiro)

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2020, Volume 25 N. 3 elocation e-12804

Abstract: En | Text: En | PDF: En

ABSTRACT The aim of this study was to evaluate the properties of Hevea brasiliensis wood wastes for production structural pieces of glued laminated (glulam) timber. Three trees with age close to 25 years and diameter at breast height (DBH) higher than 500 mm were obtained. The basic density of the wood were quantified, as well as the stiffness and the strength in static bending, shear strength and parallel compression to grain and hygroscopic equilibrium moisture. The beams of glulam were evaluated according to the modulus of elasticity (MOE), modulus of rupture (MOR) and delamination. Due to the bending properties MOR (75.14 MPa) and MOE (8166.79 MPa), as well as the shear strength (12.29 MPa) obtained, was concluded by the suitability of the rubber wood for the production of glulam beams. The composite beams presented values of MOR (75.14 MPa) and MOE (8166.79 MPa) compatible with species traditionally used in the production of glulam beams. The adhesive bond quality was verified by the delamination test, presenting delamination of 4.95 %, indicating its use for internal and external environments.

https://doi.org/10.1590/s1517-707620200003.1104 661 downloads

10.

Extractos de los documentos de posicionamientos y recomendaciones mexicanas en enfermedades cardiovasculares y COVID-19
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Alcocer-Gamba, Marco A.

; Gutiérrez-Fajardo, Pedro

; Cabrera-Rayo, Alfredo

; Sosa-Caballero, Alejandro

; Piña-Reyna, Yigal

; Merino-Rajme, José A.

; Heredia-Delgado, José A.

; Cruz-Alvarado, Jaime E.

; Galindo-Uribe, Jaime

; Rogel-Martínez, Ulises

; González-Hermosillo, Jesús A.

; Ávila-Vanzzini, Nydia

; Sánchez-Carranza, Jesús A.

; Jímenez-Orozco, Jorge H.

; Sahagún-Sánchez, Guillermo

; Fanghänel-Salmón, Guillermo

; Albores-Figueroa, Rosenberg

; Carrillo-Esper, Raúl

; Reyes-Terán, Gustavo

; Cossio-Aranda, Jorge E.

; Borrayo-Sánchez, Gabriela

; Ríos, Manuel Odín de los

; Berni-Betancourt, Ana C.

; Cortés-Lawrenz, Jorge

; Leiva-Pons, José L.

; Ortiz-Fernández, Patricio H.

; López-Cuellar, Julio

; Araiza-Garaygordobil, Diego

; Madrid-Miller, Alejandra

; Saturno-Chiu, Guillermo

; Beltrán-Nevárez, Octavio

; Enciso-Muñoz, José M.

; García-Rincón, Andrés

; Pérez-Soriano, Patricia

; Herrera-Gomar, Magali

; Lozoya del Rosal, José J.

; Fajardo-Juárez, Armando I.

; Olmos-Temois, Sergio G.

; Rodríguez-Reyes, Humberto

; Ortiz-Galván, Fernando

; Márquez-Murillo, Manlio F.

; Celaya-Cota, Manuel de J.

; Cigarroa-López, José A.

; Magaña-Serrano, José A.

; Álvarez-Sangabriel, Amada

; Ruíz-Ruíz, Vicente

; Chávez-Mendoza, Adolfo

; Méndez-Ortíz, Arturo

; León-González, Salvador

; Guízar-Sánchez, Carlos

; Izaguirre-Ávila, Raúl

; Grimaldo-Gómez, Flavio A.

; Preciado-Anaya, Andrés

; Ruiz-Gastélum, Edith

; Fernández-Barros, Carlos L.

; Gordillo, Antonio

; Alonso-Sánchez, Jesús

; Cerón-Enríquez, Norma

; Núñez-Urquiza, Juan P.

; Silva-Torres, Jesús

; Pacheco-Beltrán, Nancy

; García-Saldivia, Marianna A.

; Pérez-Gámez, Juan C.

; Lezama-Urtecho, Carlos

; López-Uribe, Carlos

; López-Mora, Gerardo E.

; Rivera-Reyes, Romina

Archivos de cardiología de México

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2020, Volume 90 Suppl. 1 Pages 100 - 110

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

Abstract The recommendations in which the Mexican Society of Cardiology (SMC) in conjunction with the National Association of Cardiologists of Mexico (ANCAM) as well as different Mexican medical associations linked to cardiology are presented, after a comprehensive and consensual review and analysis of the topics related to cardiovascular diseases in the COVID-19 pandemic. Scientific positions are analyzed and responsible recommendations on general measures are given to patients, with personal care, healthy eating, regular physical activity, actions in case of cardio-respiratory arrest, protection of the patient and health personnel as well as precise indications in the use of non-invasive cardiovascular imaging, prescription of medications, care in specific topics such as systemic arterial hypertension, heart failure, arrhythmias and acute coronary syndromes, in addition to emphasizing electrophysiology, interventionism, cardiac surgery and in cardiac rehabilitation. The main interest is to provide the medical community with a general orientation on what to do in daily practice and patients with cardiovascular diseases in the setting of this unprecedented epidemiological crisis of COVID-19.

Resumen Se presentan las recomendaciones en las cuales la Sociedad Mexicana de Cardiología (SMC) en conjunto con la Asociación Nacional de Cardiólogos de México (ANCAM), así como diferentes asociaciones médicas mexicanas vinculadas con la cardiología, después de una revisión y análisis exhaustivo y consensuado sobre los tópicos relacionados con las enfermedades cardiovasculares en la pandemia de COVID-19, se analizan posturas científicas y se dan recomendaciones responsables sobre medidas generales a los pacientes, con cuidados personales, alimentación saludable, actividad física regular, acciones en caso de paro cardiorrespiratorio, la protección del paciente y del personal de salud así como las indicaciones precisas en el uso de la imagen cardiovascular no invasiva, la prescripción de medicamentos, cuidados en tópicos específicos como en la hipertensión arterial sistémica, insuficiencia cardiaca, arritmias y síndromes coronarios agudos, además de hacer énfasis en los procedimientos de electrofisiología, intervencionismo, cirugía cardiaca y en la rehabilitación cardiaca. El interés principal es brindar a la comunidad médica una orientación general sobre el quehacer en la práctica cotidiana y pacientes con enfermedades cardiovasculares en el escenario esta crisis epidemiológica sin precedentes de COVID-19.

https://doi.org/10.24875/acm.m20000057 445 downloads

11.

Presión de distensión como factor pronóstico de mortalidad en el paciente crítico obeso con síndrome de dificultad respiratoria aguda
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Guerrero Ortiz, Rosa Karina

; Gómez González, María Natalia

; Soriano Orozco, Raúl

; Hernández, Martha Alicia

; González Carrillo, Pedro Luis

Medicina crítica (Colegio Mexicano de Medicina Crítica)

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apr 2019, Volume 33 N. 2 Pages 79 - 83

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

Resumo: Introdução: Tem sido demonstrado que a pressão de distensão pulmonar (ΔP) é a variável física que melhor se correlaciona com a sobrevida em pacientes com síndrome do desconforto respiratório agudo, sugerindo um valor protetor < 15 cmH2O. Objetivo: O objetivo foi identificar se os valores de ΔP como margem de segurança descritos são um fator prognóstico de mortalidade, aplicados em pacientes obesos com síndrome do desconforto respiratório agudo na UTI. Métodos: Estudo longitudinal, prospectivo, observacional, realizado na Unidade de Terapia Intensiva (UTI) do Centro Médico Nacional de Bajío, UMAE 1, Guanajuato, de janeiro a julho de 2018. Foram admitidos 47 pacientes > 18 anos e IMC > 30 kg/m2 com diagnóstico de SDRA sob ventilação mecânica invasiva. O ΔP e o Pplat foram registrados às 24, 48 e 72 horas após a admissão. Resultados: Encontrou-se uma diferença significativa tanto no ΔP quanto no Pplat (p < 0.05) às 24 h, sendo 14.08 ± 5 (12-20) no grupo dos sobreviventes e 16.56 ± 3 (12-21) nos não sobreviventes. Conclusão: Observou-se que a manutenção do ΔP e Pplat nas faixas < 15 e < 30, respectivamente, nas primeiras 24 horas tem impacto na mortalidade desses pacientes.

Abstract: Introduction: Pulmonary distension pressure (ΔP) has been shown to be the physical variable that best correlates with survival in patients with acute respiratory distress syndrome, suggesting a protective value <15 cmH2O. Objective: The purpose was to identify if the values of ΔP as safety margin described are a prognostic factor of mortality, applied in obese patients with acute respiratory distress syndrome in the ICU. Methods: Longitudinal, prospective, observational study, carried out in the Intensive Care Unit (ICU) of the Bajío National Medical Center UMAE 1, Guanajuato, from January to July 2018. 47 patients> 18 years old and BMI> 30 were admitted. with diagnosis of ARDS under invasive mechanical ventilation. The ΔP and Pplat were recorded at 24, 48 and 72 hours after admission. Results: A significant difference was found in both ΔP and Pplat (p <0.05) at 24 hrs, being 14.08 ± 5 (12-20) in the group of survivors and 16.56 ± 3 (12-21) in non-survivors. Conclusion: It was observed that maintaining ΔP and Pplat in ranges <15 and <30 respectively, in the first 24 hrs has an impact on the mortality of these patients.

Resumen: Introducción: Se ha demostrado que la presión de distensión pulmonar (ΔP) es la variable física que mejor correlaciona con la supervivencia en pacientes con síndrome de dificultad respiratoria aguda, sugiriendo un valor protector <15 cmH2O. Objetivo: El propósito fue identificar si los valores de ΔP como margen de seguridad descritos son un factor pronóstico de mortalidad, aplicados en pacientes obesos con síndrome de dificultad respiratoria aguda en la UCI. Métodos: Estudio longitudinal, prospectivo, observacional, realizado en la Unidad de Cuidados Intensivos (UCI) del Centro Médico Nacional del Bajío UMAE 1, Guanajuato, de enero a julio del 2018. Se ingresaron 47 pacientes >18 años e IMC > 30 kg/m2 con diagnóstico de SDRA bajo ventilación mecánica invasiva. Se registró la ΔP y Pplat a las 24, 48 y 72 horas desde su ingreso. Resultados: Se encontró una diferencia significativa tanto en la ΔP, como en la Pplat (p < 0.05) a las 24 h siendo de 14.08±5 (12-20) en el grupo de los sobrevivientes y de 16.56±3 (12-21) en el de los no sobrevivientes. Conclusión: Se observó que el mantener la ΔP y Pplat en rangos < 15 y < 30 respectivamente, en las primeras 24 h tiene un impacto sobre la mortalidad de estos pacientes.

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12.

Calidad de vida relacionada con la salud en los pacientes diagnosticados de síndrome subacromial en el Área Integrada de Talavera
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Aceituno-Gómez, Javier

; García-Madero, Venancio Miguel

; Blázquez-Gamallo, Raquel

; Harto-Martínez, Ana María

; Mohedano, Alicia

; Viñuela, Antonio

; Avendaño-Coy, Juan

; Gómez-Soriano, Julio

; Muñoz-González, Alejandro

; González-González, Jaime

; Criado-Álvarez, Juan José

Revista Española de Salud Pública

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2019, Volume 93 elocation e201910094

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

ABSTRACT Background: There is a high prevalence of subacromial syndrome among patients with shoulder pathology, where the pain and tendency to chronification are some of its most important characteristics. This is why it is necessary to objectively interact with the quality of life of the subject. The main goal was to determine if there are differences between subacromial patients and asymptomatic patients regarding quality of life. Methods: Transversal study carried out in the Talavera Integrated Area during the months of November 2016 to March 2017. Participated a total of 92 subjects, 46 were symptomatic mating by age and sex with an asymptomatic sample and without joint pathology of the same size and health area. In both cases, the EQ-5D questionnaire was administered. The prevalence was calculated from the waiting list of traumatology physiotherapy in the year 2015. The SPSS statistical program was used, applying the T-test and the chi-square. Results: The EQ-5D questionnaire obtained a standardized mean of 0.70 in the subacromial syndrome and 0.85 in the asymptomatic population (P=0,0001). The prevalence of impingement subacromial within shoulder pathology was 39.19%. Conclusions: Subacromial syndrome has a high prevalence within the shoulder pathology in the Rehabilitation Service and significantly interferes in the quality of life related to the health of the subject.

RESUMEN Fundamentos: Existe una alta prevalencia del síndrome subacromial dentro de los pacientes con patología de hombro, en el cual el dolor y la tendencia a la cronificación son alguna de sus características más importantes. Por ello es necesario objetivar su interacción con la calidad de vida del sujeto. El objetivo principal del estudio fue determinar si existían diferencias en la calidad de vida entre sujetos con síndrome subacromial y asintomáticos. Sujetos y métodos: Se realizó un estudio transversal en el Área Integrada de Talavera de la Reina (Toledo), durante los meses de noviembre de 2016 a marzo de 2017. Participaron un total de 92 sujetos, de los que 46 eran sintomáticos, apareándose por edad y sexo con una muestra asintomática y sin patología articular del mismo tamaño y área de salud. En ambos casos se les administró el cuestionario EQ-5D. La prevalencia se calculó a partir de la lista de espera de fisioterapia traumatológica del año 2015. Se utilizó el programa estadístico SPSS, empleándose la prueba T y la chi-cuadrado. Resultados: El cuestionario EQ-5D obtuvo una media estandarizada de 0,70 en el síndrome subacromial y de 0,85 en la población asintomática (p=0,0001). La prevalencia del impingement subacromial dentro de la patología de hombro fue del 39,19%. Conclusiones: El síndrome subacromial tiene una alta prevalencia dentro de la patología de hombro en el Servicio de Rehabilitación e interfiere significativamente en la calidad de vida relacionada con la salud del sujeto.

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13.

Calidad de vida relacionada con la salud en los pacientes diagnosticados de síndrome subacromial en el Área Integrada de Talavera
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Aceituno-Gómez, Javier

; García-Madero, Venancio Miguel

; Blázquez-Gamallo, Raquel

; Harto-Martínez, Ana María

; Mohedano, Alicia

; Viñuela, Antonio

; Avendaño-Coy, Juan

; Gómez-Soriano, Julio

; Muñoz-González, Alejandro

; González-González, Jaime

; Criado-Álvarez, Juan José

Revista Española de Salud Pública

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2019, Volume 93 elocation e201910094

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

14.

Resistência à compressão e viabilidade econômica de blocos de concreto dosado com resíduos de tijolos cerâmicos
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Souza, Micael Felipe de

; Soriano, Julio

; Patino, Marco Tulio Ospina

Matéria (Rio de Janeiro)

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2018, Volume 23 N. 3 elocation e12203

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

RESUMO Os tijolos e blocos cerâmicos são empregados em larga escala nas construções das alvenarias de vedação ou estruturais, proporcionando condições adequadas de conforto ao ambiente interno. Na fabricação desses elementos cerâmicos há necessidade de se excluir as peças com defeitos, originados da não conformidade das dimensões, das falhas no processo de queima ou quebras. O simples descarte dessas peças com defeito em aterros gera custos de remoção e impactos ambientais, bem como o desperdício de um material que contém suas propriedades físicas e mecânicas inerentes. Nesse contexto, o presente trabalho teve como objetivo avaliar, sob os aspectos da resistência à compressão e econômicos, a viabilidade do emprego de agregados oriundos do resíduo de tijolos cerâmicos na dosagem de concreto para produção de blocos maciços para pavimentação e para alvenaria. Para tanto, foram triturados tijolos cerâmicos, em moinho de martelos e elaboradas misturas de concreto com substituição dos agregados (miúdo e graúdo). O desempenho mecânico dos blocos produzidos foi avaliado por ensaio à compressão simples e a viabilidade econômica para implantação do processo de aproveitamento dos resíduos foi analisada para cenários com um horizonte de cinco anos, utilizando o fluxo de caixa para calcular o retorno do investimento inicial. Os resultados mostraram que os blocos produzidos com a substituição de 80% do agregado miúdo apresentaram um elevado desempenho mecânico e comprovada viabilidade econômica. Com base nestes resultados, conclui-se que a produção de blocos para pavimentação e alvenaria é uma solução viável para o aproveitamento e destino dos resíduos da indústria cerâmica.

ABSTRACT Bricks and ceramic blocks are widely used in constructions of structural and non-structural masonry, providing adequate conditions of comfort to the indoor environment. The manufacture of these ceramic products implies discarding of damaged elements, due to non-conformity of dimensions, failures in the process of burning or breaking. The simple disposal of these pieces in landfills generates removal costs and environmental impacts, as well as the waste of material that still contains valuable physical and mechanical properties. In this context, the objective of the present work was to evaluate the viability of using aggregates from the ceramic brick residue in the concrete dosage to produce solid blocks for paving and masonry, concerning their compressive strength and the economics aspects. For this purpose, ceramic bricks were grounded in hammer mills to elaborate concrete mixtures with replacement of aggregates (fine and coarse). The mechanical performance of these blocks was evaluated by using a compression test as well as the economic feasibility of the waste recovery process in a five-year horizon for different scenarios. The results indicate that blocks produced with substitution of 80% of fine aggregate presented a high mechanical performance and economic viability. It is concluded that production of blocks for paving and masonry is a viable solution for the recovery and destination of waste from the ceramic industry.

https://doi.org/10.1590/s1517-707620180003.0537 1782 downloads

15.

LEARNING CURVE IN SINGLE-LEVEL MINIMALLY INVASIVE TLIF: EXPERIENCE OF A NEUROSURGEON
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Romano-Feinholz, Samuel

; Soriano-Solís, Sergio

; Zúñiga-Rivera, Julio César

; Gutiérrez-Partida, Carlos Francisco

; Rodríguez-García, Manuel

; Soriano-Solís, Héctor Antonio

; Soriano-Sánchez, José Antonio

Coluna/Columna

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dec 2017, Volume 16 N. 4 Pages 279 - 282

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

RESUMO Objetivo: Descrever a curva de aprendizagem que mostra o progresso de um único neurocirurgião na realização de MI-TLIF em um só nível. Métodos: Foram incluídos 99 pacientes consecutivos submetidos a MI-TLIF de um só nível pelo mesmo neurocirurgião (JASS). Foram analisadas as características demográficas dos pacientes. Além disso, avaliou-se o tempo operatório, a perda de sangue intraoperatória e o tempo de internação hospitalar. As curvas de aprendizagem foram realizadas com um modelo de regressão segmentada. Resultados: A média de idade foi 54,6 anos. As curvas de aprendizagem mostraram uma relação inversa entre a experiência cirúrgica e a variável analisada, atingindo um ponto de inflexão para o tempo de cirurgia no caso 43 e da perda sanguínea no caso 48. O tempo médio de cirurgia foi de 203,3 minutos (amplitude interquartil [IQR] 150 - 240 minutos), de sangramento intraoperatório foi 97,4 ml (IQR 40-100 ml) e de internação hospitalar foi de quatro dias (IQR 3-5 dias). Conclusões: O MI-TLIF é um procedimento realizado com muita frequência devido à sua eficácia e segurança, que tem mostrado resultados comparáveis com o procedimento aberto. De acordo com este estudo, a curva de aprendizagem necessária é ligeiramente maior do que para os procedimentos abertos, sendo que é atingida depois de cerca de 45 casos.

ABSTRACT Objective: To describe the learning curve that shows the progress of a single neurosurgeon when performing single-level MI-TLIF. Methods: We included 99 consecutive patients who underwent single-level MI-TLIF by the same neurosurgeon (JASS). Patient’s demographic characteristics were analyzed. In addition, surgical time, intraoperative blood loss and hospital stay were evaluated. The learning curves were calculated with a piecewise regression model. Results: The mean age was 54.6 years. The learning curves showed an inverse relationship between the surgical experience and the variable analyzed, reaching an inflection point for surgical time in case 43 and for blood loss in case 48. The mean surgical time was 203.3 minutes (interquartile range [IQR] 150-240 minutes), intraoperative bleeding was 97.4ml (IQR 40-100ml) and hospital stay of four days (IQR 3-5 days). Conclusions: MI-TLIF is a very frequent surgical procedure due to its effectiveness and safety, which has shown similar results to open procedure. According to this study, the required learning curve is slightly higher than for open procedures, and is reached after about 45 cases.

RESUMEN Objetivo: Describir la curva de aprendizaje que muestre el progreso de un sólo neurocirujano para la realización de MI-TLIF de un sólo nivel. Métodos: Se incluyeron 99 pacientes consecutivos sometidos a MI-TLIF en un solo nivel por un mismo neurocirujano (JASS). Se analizaron las características demográficas de los pacientes. Además se evaluó el tiempo quirúrgico, sangrado transoperatorio y tiempo de estancia hospitalaria. Las curvas de aprendizaje se realizaron con un modelo de regresión dividida en segmentos. Resultados: Se obtuvo un promedio de edad de 54,6 años. Las curvas de aprendizaje mostraron una relación inversa entre la experiencia quirúrgica y la variable analizada, alcanzando un punto de inflexión para tiempo quirúrgico en el caso 43 y para el sangrado en el caso 48. El promedio de tiempo quirúrgico fue de 203,3 minutos (amplitud intercuartil [IQR] 150 - 240 minutos), del sangrado transoperatorio fue 97,4 ml (IQR 40 - 100 ml) y de la estancia hospitalaria fue de cutro días (IQR 3 - 5 días). Conclusiones: El MI-TLIF es un procedimiento realizado con gran frecuencia debido a su efectividad y seguridad y que ha demostrado resultados equiparables con el procedimiento abierto. De acuerdo a este estudio la curva de aprendizaje requerida es discretamente mayor que para procedimientos abiertos, alcanzándola aproximadamente tras 45 casos.

https://doi.org/10.1590/s1808-185120171604182052 839 downloads

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Glossary and search help

You can enrich your search in a very simple way. Use the search indexes combined with the connectors (AND or OR) and specify more your search.

For example, if you want to search for articles about
cases of dengue in Brasil in 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

See below the complete list of search indexes that can be used:

Index code	Element
ti	article title
au	author
kw	article keywords
subject	subject (title words, abstract and keywords)
ab	abstract
ta	journal short title (e.g. Cad. Saúde Pública)
journal_title	journal full title (e.g. Cadernos de Saúde Pública)
la	publication language code (e.g. pt - Portuguese, es - Spanish)
type	document type
pid	publication identifier
publication_year	publication year of publication
sponsor	sponsor
aff_country	country code of the author's affiliation
aff_institution	author affiliation institution
volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

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