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El libro XV de la Antología Palatina ha conservado seis epigramas cuyos textos pretenden figurar determinados objetos: las alas de una estatuilla del dios Eros, un hacha, un huevo de ruiseñor, una siringa, y un par de altares sacrificiales. Esta pequeña compilación poética constituye el antecedente más antiguo dentro de la cultura occidental de lo que hoy se conoce en términos generales como caligrama o poesía visual. El objetivo de nuestro trabajo es hacer una presentación traducida y brevemente comentada de estos poemas figuras (technopaegnia) con el fin de describir las características estilísticas, formales y temáticas propias del género. A modo de conclusión, esbozamos de manera hipotética una lectura programática de la colección a partir de las referencias metaliterarias de los poemas. Ciertamente, estas formas poéticas, que en sus orígenes pretenden emular epigramas grabados sobre objetos votivos, poco a poco comienzan a abandonar sus pretensiones de verosimilitud para reivindicar finalmente el carácter artificioso y lúdico del género.

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Introducción: En los pacientes críticos se instala un estado hipermetabólico como respuesta a la agresión recibida, lo que conduce a un rápido proceso de desnutrición, el cual se ha asociado a mayor morbilidad y mortalidad. La vía de alimentación enteral de elección es a través de una gastrostomía endoscópica, y una alternativa es la vía laparoscópica. Métodos: Entre enero de 2016 y marzo de 2019, se colectaron los datos de los pacientes internados en la Unidad de Terapia Intensiva del Hospital de Urgencias de Córdoba con indicación de nutrición enteral y sometidos a gastrostomía laparoscópica de alimentación. Se obtuvieron datos demográficos, valoración preoperatoria según la clasificación de American Society of Anesthesiologists (ASA), complicaciones trans y postoperatorias, comienzo y factibilidad de la alimentación. Resultados: Cumplieron los criterios de inclusión 12 pacientes, edad promedio de 39 años. El tiempo quirúrgico promedio total fue de 39 minutos, no registrando complicaciones perioperatorias Todos pudieron ser alimentados a partir de las 24 hs. Conclusión: En nuestro Hospital la gastrostomía endoscópica percutánea es de elección, utilizando la gastrostomía laparoscópica en casos seleccionados. Es una técnica de escasa complejidad y al alcance del cirujano, pudiendo ser programada en forma inmediata a la indicación.

Introducción. La falla cardíaca es una de las enfermedades con mayor prevalencia a nivel mundial. En Colombia no se conoce con certeza el estado de la investigación en torno al tema. Objetivo. Describir las publicaciones originales en falla cardíaca en Colombia. Materiales y métodos. Revisión sistemática. Búsqueda electrónica en Embase, PubMed, LILACS Y SciELO, con términos MeSH: “heart failure”, “colombian”, “Colombia”, “Latin America”, “developing countries”. Búsqueda manual en 58 revistas identificadas en Publindex. Se incluyeron investigaciones originales, publicadas entre 1980 y 2015, que evaluaron población adulta colombiana con falla cardíaca. Resultados. Se identificaron 2 684 artículos: 35 cumplieron criterios de inclusión; 30 (85.7%) fueron publicados a partir del 2009; 30 (85.7%) se realizaron en Bogotá y Medellín; 11 (31.4%) tuvieron n>200; 19 (54.2%) fueron descriptivos y 5 (14.2%) cuasiexperimentales; 9 (25.7%) describieron poblaciones generales; 9 (25.7%) abordaron el tema del autocuidado, 3 (8.8%), la rehabilitación cardíaca, 3 (8.8%), la percepción de enfermedad y 3 (8.8%), los factores pronósticos. Conclusión. El número de investigaciones originales publicadas sobre falla cardíaca es escaso; la mayoría se realizó en los últimos años. El diseño descriptivo fue el más común. Los temas abordados con mayor frecuencia fueron el autocuidado y las descripciones poblacionales.

El objetivo del presente trabajo es examinar los modos en que el ‘yo’ se manifiesta en la poesí­a yámbica de Hiponacte de Éfeso (s. VI a. C.) y sus posibles funciones dentro de la performance poética. En particular, desde un análisis discursivo, se analizan las formas en que la primera y la segunda personas se inscriben deí­cticamente en los ff. 2, 42, 43, 47, 49 y 208Dg, y las relaciones de identidad que se entablan entre los distintos actantes de los niveles enuncivo y enunciativo. En definitiva, se concluye que es posible observar un proceso de enmascaramiento, en el cual el ‘yo’ asume el rol de un suplicante en una parodia de la plegaria.

Se busca analizar la adicción a internet como una de las respuestas posibles ante el aburrimiento asociado al hombre actual, incapaz de constituir un proyecto auténtico y de dotar de sentido a un mundo vacío. Se trata de un vagabundear por la superficie, en un mundo cambiante donde el anonimato y los perfiles auto-diseñados permiten huir de la facticidad de la propia biografía. En efecto, mientras se esté conectado, las opresiones de la propia historia desaparecen y el futuro deviene la búsqueda del fulgurante instante de lo novedoso. En casos de gravedad, la existencia arrojada hacia un presente volátil se vuelve extraña a todo pasado y a todo futuro, conformando un ciclo de repetición, recaída y detención del desarrollo personal. El saltar de un contenido estimulante al siguiente, recorriendo infinidad de realidades con la efectuación de un click, en un movimiento compulsivo por vivenciar el placer que ofrece lo interesante, implica un encierro progresivo en un presente vacío.

The objective of this work is the conservation by modern digital means of the architectural firsts located in the city of Riobamba, an interactive photographic repository was designed in which 360° aerial shots were used. A mixed methodology was used, both qualitative and quantitative, employing methods such as documentary, descriptive, population and survey techniques, interview and observation sheets, investigating the first fruits for their historical relevance and social impact, subsequently, a buyer persona was developed to determine the user who occupied the repository, official data and information from government entities was sought with the use of the interview, The data obtained were analyzed in order to facilitate the photographic taking and move on to the creative phase, formulating guiding ideas that gave feasible solutions in the design of the proposal. With what was learned in the experimentation, the final design was started, the photographs went through a process of digital development, colorization and digital stitching; In addition, a third process of composition - punctual edition, all equirectangular shots were transferred to the panoraven platform, facilitating the creation of the repository with a contribution of interactivity, a hotspot tour and informative texts were used with the option of infospot, to reinforce the interactivity a map was added so that people know the location of the scoops and a gyroscope to create a better experience on the cell phone and adaptability on various platforms. These processes resulted in an interactive digital photographic repository of easy access, dissemination, functional and with the logo "Riobamba city of the first fruits" this identifying resource of the city was preserved, finally it can be concluded that the use of new technologies is essential to reach new generations, being essential that government entities invest in these cultural resources, which enhance tourism and consequently activate the economy of the city of Riobamba. [ABSTRACT FROM AUTHOR]

The two upward‐looking Thermal InfraRed Sensor (TIRS) channels from the Mars Environmental Dynamics Analyzer (MEDA) instrument suite on board the Perseverance rover enable the retrieval of total aerosol optical depth (dust plus water ice cloud) above the rover for all observations when TIRS is taken. Because TIRS observes at thermal infrared wavelengths, the retrievals are possible during both the day and night and thus, they provide an excellent way to monitor both the diurnal and seasonal variations of aerosols above Jezero Crater. A retrieval algorithm has been developed for this purpose and here, we describe that algorithm along with our results for the first 400 sols of the Perseverance mission covering nearly the entire aphelion season as well as a regional dust storm and the beginning of the perihelion season. We find systematic diurnal variations in aerosol optical depth that can be associated with dust and water ice clouds as well as a clear change from a cloud‐filled aphelion season to a perihelion season where dust is the dominant aerosol. A comparison of retrieved optical depths between TIRS and the SkyCam camera that is also part of MEDA indicates evidence of possible diurnal variations in cloud height or particle size. Plain Language Summary: Observations made by the Thermal InfraRed Sensor (TIRS) instrument on the Perseverance rover enable the amount of airborne dust and clouds above the rover to be determined. The TIRS instrument observes thermal infrared radiation so it can observe the dust and clouds both during the day and night. Here, we present results for the first 13 months of observations by TIRS. These results show that the dust and clouds vary as a function of season on Mars and as a function of the time of day. At the beginning of the period of time studied here, there were more clouds than dust, and the clouds were maximum just before dawn and just after dusk. Later in the season, dust became the dominant aerosol, with the diurnal maximum near midday. Key Points: The Thermal InfraRed Sensor (TIRS) upward‐looking sensors enable the retrieval of total aerosol optical depth during both day and nightAerosol optical depth shows clear diurnal and seasonal trends. Diurnal maximum opacity is near dawn for clouds and near noon for dustTIRS retrievals of aerosol optical depth can detail the complex time history of rapidly changing events such as dust storms [ABSTRACT FROM AUTHOR]

The aim of this study was to analyze the biochemical alterations in the golden mussel Limnoperna fortune i under dietary glyphosate exposure. Mussels were fed during 4 weeks with the green algae Scenedesmus vacuolatus previously exposed to a commercial formulation of glyphosate (6 mg L −1 active principle) with the addition of alkyl aryl polyglycol ether surfactant. After 1, 7, 14, 21 and 28 days of dietary exposure, glutathione-S-transferase (GST), catalase (CAT), superoxide dismutase (SOD), acetylcholinesterase (AChE), carboxylesterases (CES) and alkaline phosphatase (ALP) activities, glutathione (GSH) content and damage to lipids and proteins levels were analyzed. A significant increase (72%) in the GST activity and a significant decrease (26%) in the CES activity in the mussels fed on glyphosate exposed algae for 28 days were observed. The ALP activity was significantly increased at 21 and 28 days of dietary exposure (48% and 72%, respectively). GSH content and CAT, SOD and AchE activities did not show any differences between the exposed and non exposed bivalves. No oxidative damage to lipids and proteins, measured as TBARS and carbonyl content respectively, was observed in response to glyphosate dietary exposure. The decrease in the CES activity and the increases in GST and ALP activities observed in L . fortunei indicate that dietary exposure to glyphosate provokes metabolic alterations, related with detoxification mechanisms. [ABSTRACT FROM AUTHOR]

The Mars Environmental Dynamics Analyzer (MEDA) is a suite of environmental sensors onboard NASA’s Mars 2020 mission. The Thermal InfraRed Sensor (TIRS), developed at Centro de Astrobiología of Spain, is one of the six sensors comprising MEDA, and it will measure the net thermal infrared radiation and reflected solar radiation at the surface, as well as the atmospheric and surface skin temperatures using five different channels. In combination with MEDA's other sensors, TIRS will allow the quantification of the surface energy budget and the determination of key geophysical properties of the terrain such as the albedo and thermal inertia. Here we present a general description of the TIRS, its channels scientific requirements, and the mechanical and thermal design. Then, a detailed sensor mathematical model and a sensitivity analysis to model uncertainties are described. Some characterization test results to model parameters identification are included. Finally, accuracy and resolution calculus for each channel versus operational temperature is presented. The calculus is performed based on sensitivity equations, the practical tests results and the estimated values for different uncertainty sources. [ABSTRACT FROM AUTHOR]

Copyright of Revista Facultad de Medicina de la Universidad Nacional de Colombia is the property of Universidad Nacional de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article discusses that Despite the importance of sand and dust to Mars geomorphology, weather, and exploration, the processes that move sand and that raise dust to maintain Mars' ubiquitous dust haze and to produce dust storms have not been quantified as the missions lack either the necessary sensors or a sufficiently active aeolian environment.

To adequately and efficiently evaluate patients with gastrointestinal symptoms in the context of axial spondyloarthritis can be difficult, considering that many of these patients suffer from chronic pain, present high inflammatory parameters, and use drugs with possible gastrointestinal adverse effects. In addition, the immunosuppressive treatments that these patients can receive make it necessary to always consider infections within the differential diagnoses of inflammatory bowel disease. In this article, we propose a practical approach to patients diagnosed with axial spondyloarthritis and suspected inflammatory bowel disease., Competing Interests: Disclosure The authors have no commercial or financial conflicts of interest to disclose, and no funding sources to report., (Copyright © 2020 Elsevier Inc. All rights reserved.)