On new means with interesting practical applications: generalized power means

Means of positive numbers appear in many applications and have been a traditional matter of study. In this work, we focus on defining a new mean of two positive values with some properties which are essential in applications, ranging from subdivision and multiresolution schemes to the numerical solution of conservation laws. In particular, three main properties are crucial—in essence, the ideas of these properties are roughly the following: to stay close to the minimum of the two values when the two arguments are far away from each other, to be quite similar to the arithmetic mean of the two values when they are similar and to satisfy a Lipchitz condition. We present new means with these properties and improve upon the results obtained with other means, in the sense that they give sharper theoretical constants that are closer to the results obtained in practical examples. This has an immediate correspondence in several applications, as can be observed in the section devoted to a particular example

One-year cardiovascular outcomes after coronavirus disease 2019: The cardiovascular COVID-19 registry

Background: The long-term cardiovascular (CV) outcomes of COVID-19 have not been fully explored. Methods: This was an international, multicenter, retrospective cohort study conducted between February and December 2020. Consecutive patients ?18 years who underwent a real-time reverse transcriptase-polymerase chain reaction (RT-PCR) for SARS-CoV2 were included. Patients were classified into two cohorts depending on the nasopharyngeal swab result and clinical status: confirmed COVID-19 (positive RT-PCR) and control (without suggestive symptoms and negative RT-PCR). Data were obtained from electronic records, and clinical follow-up was performed at 1-year. The primary outcome was CV death at 1-year. Secondary outcomes included arterial thrombotic events (ATE), venous thromboembolism (VTE), and serious cardiac arrhythmias. An independent clinical event committee adjudicated events. A Cox proportional hazards model adjusted for all baseline characteristics was used for comparing outcomes between groups. A prespecified landmark analysis was performed to assess events during the post-acute phase (31-365 days). Results: A total of 4,427 patients were included: 3,578 (80.8%) in the COVID-19 and 849 (19.2%) control cohorts. At one year, there were no significant differences in the primary endpoint of CV death between the COVID-19 and control cohorts (1.4% vs. 0.8%; HRadj 1.28 [0.56-2.91]; p = 0.555), but there was a higher risk of all-cause death (17.8% vs. 4.0%; HRadj 2.82 [1.99-4.0]; p = 0.001). COVID-19 cohort had higher rates of ATE (2.5% vs. 0.8%, HRadj 2.26 [1.02-4.99]; p = 0.044), VTE (3.7% vs. 0.4%, HRadj 9.33 [2.93-29.70]; p = 0.001), and serious cardiac arrhythmias (2.5% vs. 0.6%, HRadj 3.37 [1.35-8.46]; p = 0.010). During the post-acute phase, there were no significant differences in CV death (0.6% vs. 0.7%; HRadj 0.67 [0.25-1.80]; p = 0.425), but there was a higher risk of deep vein thrombosis (0.6% vs. 0.0%; p = 0.028). Re-hospitalization rate was lower in the COVID-19 cohort compared to the control cohort (13.9% vs. 20.6%; p = 0.001). Conclusions: At 1-year, patients with COVID-19 experienced an increased risk of all-cause death and adverse CV events, including ATE, VTE, and serious cardiac arrhythmias, but not CV death

Guatiní: un proyecto para fomentar el conocimiento de la avifauna cubana en las nuevas generaciones

In Cuba there are 29 species of threatened or almost threatened birds, three of them in critically endangered, eight in danger, seven vulnerable, and eleven close to the threat. In addition to the loss and degradation of habitats, Cuban birds are threatened by hunting, egg collection and illegal trade. Reversing this situation goes beyond the laws and actions of the competent authorities, an environmental education is necessary from an early age. It is necessary that individuals and communities understand the complex nature of the natural environment and acquire the knowledge, values, behaviors and skills to participate responsibly and effectively in the prevention and solution of environmental problems. Nowadays children and young people make a great use of mobile phones, tablets and computers mainly to play; these games mostly just entertain and do not educate, and in some cases we could say that they alienate. Why not take advantage of these technologies with the aim of encouraging early knowledge and love for flora and fauna? The goal of the Guatiní project is the development of games and multimedia applications that allow the dissemination of the accumulated scientific information on the Cuban avifauna and thus educate mainly the new generations in the care of the environment.En Cuba existen 29 especies de aves amenazadas o casi amenazadas, tres en peligro crítico, ocho en peligro, siete vulnerables, y once cercanas a la amenaza. Además de la pérdida y degradación de los hábitats, las aves de Cuba se ven amenazadas por la cacería, la colecta de huevos y el comercio ilegal.  Revertir esta situación va más allá de las leyes y acciones de las autoridades competentes, es necesaria una educación medioambiental desde las edades tempranas. Se necesita que los individuos y las colectividades se identifiquen con su entorno y adquieran los conocimientos, los valores, los comportamientos y las habilidades para participar responsable y eficazmente en la prevención y la solución de los problemas ambientales. En la actualidad, niños y jóvenes hacen un gran uso de los teléfonos móviles, tabletas y computadoras principalmente para jugar; en su mayoría, estos juegos solo entretienen y no educan, y en algunos casos se podría decir que enajenan. ¿Por qué no aprovechar estas tecnologías para incentivar desde edades tempranas el conocimiento y el amor por la flora y la fauna? El proyecto Guatiní tiene como objetivo desarrollar juegos y aplicaciones multimedia que permitan divulgar la información científica acumulada sobre la avifauna cubana y educar así principalmente a las nuevas generaciones en el cuidado del medio ambiente

Revista de Vertebrados de la Estación Biológica de Doñana

Relación longitud-peso y condición del Barbo de Sclater (Barbus barbus sclateri G.), en el río Guadiato, Córdoba, España.Estudio biométrico y biológico de la tortuga mora (Testudo graeca) en la Reserva Biológica de Doñana, HuelvaEtograma del lagarto de Tenerife, Gallotia galloti galloti (Sauria-LacertidaeOrganización temporal en las comunidadesde avesAlimentación y relaciones tróficas entre los paseriformes en paso otoñal por una localidad de Andalucía centralVariación anual de régimen alimenticio y densidad de población de dos estrigiformes:sus causaslas Adeidas en la cuenca del Duero.Niveles de contaminantes organoclorados y metales pesados en huevos de aves de las Marismas del Guadalquivir, 1975Alimentación primaveral de la garcilla bueyera.la reproducción de un ave parásita: el tordomirlo (Molothrus bonariensis) en los llanos de Apure (Venezuela)Estructuras de sexos y edades en una poblaciónde conejos (Oryctolagus cunicuLus l.) de Andalucía OccidentaParámetros de gregarismo del gamo (Dama dama) en el Coto de Doñana.Primeros datos sobre la distribución de Cobitis calderoni Bacescu, 1961 (pisces, cobitidae) en la Península IbéricaSobre la existencia de Telestes soufia Risso, 1826 y Leuciscus leuciscus L. 1758 en España.La distrtibución de Hemidactylus turciscus en la provincia de Córdoba.Predación de Vipera latastei sobre Mustela nivalis.Sobre las poblaciones de Podarcis en el macizo del GuadarramaDatos sobre la reproducción de Lacerta vivipara en la cordillera CantábricaCasos de melanismo en Natrix natrix y Malpolon monspessulanusMedidas máximas para Coluber hippocrepis LUna nueva población de Lacerta sicula rafinesque para el norte de España.Captura de la barnacla carinegra, Branta bernicla en la costa mediterránea Europea.Datos sobre la dieta frugívora del mirlo (Turdus merula) en dos localidades del sur de EspañaLa ocupación de nidos de Hirundo daurica.La invasión de Hirunda daurica Temm. en la Península IbéricaHíbridos de anátidas en las marismas del GuadalquiviDatos sobre la reproducción de Alouatta seniculus en los Llanos de VenezuelaPeer reviewe

Guatiní: un proyecto para fomentar el conocimiento de la avifauna cubana en las nuevas generaciones

En Cuba existen 29 especies de aves amenazadas o casi amenazadas, tres en peligro crítico, ocho en peligro, siete vulnerables, y once cercanas a la amenaza. Además de la pérdida y degradación de los hábitats, las aves de Cuba se ven amenazadas por la cacería, la colecta de huevos y el comercio ilegal.  Revertir esta situación va más allá de las leyes y acciones de las autoridades competentes, es necesaria una educación medioambiental desde las edades tempranas. Se necesita que los individuos y las colectividades se identifiquen con su entorno y adquieran los conocimientos, los valores, los comportamientos y las habilidades para participar responsable y eficazmente en la prevención y la solución de los problemas ambientales. En la actualidad, niños y jóvenes hacen un gran uso de los teléfonos móviles, tabletas y computadoras principalmente para jugar; en su mayoría, estos juegos solo entretienen y no educan, y en algunos casos se podría decir que enajenan. ¿Por qué no aprovechar estas tecnologías para incentivar desde edades tempranas el conocimiento y el amor por la flora y la fauna? El proyecto Guatiní tiene como objetivo desarrollar juegos y aplicaciones multimedia que permitan divulgar la información científica acumulada sobre la avifauna cubana y educar así principalmente a las nuevas generaciones en el cuidado del medio ambiente

Recommendations for ophthalmologic practice during the easing of COVID-19 control measures

In the context of the COVID-19 pandemic, this paper provides recommendations for medical eye care during the easing of control measures after lockdown. The guidelines presented are based on a literature review and consensus among all Spanish Ophthalmology Societies regarding protection measures recommended for the ophthalmologic care of patients with or without confirmed COVID-19 in outpatient, inpatient, emergency and surgery settings. We recommend that all measures be adapted to the circumstances and availability of personal protective equipment at each centre and also highlight the need to periodically update recommendations as we may need to readopt more restrictive measures depending on the local epidemiology of the virus. These guidelines are designed to avoid the transmission of SARS-CoV-2 among both patients and healthcare staff as we gradually return to normal medical practice, to prevent postoperative complications and try to reduce possible deficiencies in the diagnosis, treatment and follow-up of the ophthalmic diseases. With this update (5th) the Spanish Society of Ophthalmology is placed as one of the major ophthalmology societies providing periodic and systematized recommendations for ophthalmic care during the COVID-19 pandemic

Guatiní: un proyecto para fomentar el conocimiento de la avifauna cubana en las nuevas generaciones

In Cuba there are 29 species of threatened or almost threatened birds, three of them in critically endangered, eight in danger, seven vulnerable, and eleven close to the threat. In addition to the loss and degradation of habitats, Cuban birds are threatened by hunting, egg collection and illegal trade. Reversing this situation goes beyond the laws and actions of the competent authorities, an environmental education is necessary from an early age. It is necessary that individuals and communities understand the complex nature of the natural environment and acquire the knowledge, values, behaviors and skills to participate responsibly and effectively in the prevention and solution of environmental problems. Nowadays children and young people make a great use of mobile phones, tablets and computers mainly to play; these games mostly just entertain and do not educate, and in some cases we could say that they alienate. Why not take advantage of these technologies with the aim of encouraging early knowledge and love for flora and fauna? The goal of the Guatiní project is the development of games and multimedia applications that allow the dissemination of the accumulated scientific information on the Cuban avifauna and thus educate mainly the new generations in the care of the environment.En Cuba existen 29 especies de aves amenazadas o casi amenazadas, tres en peligro crítico, ocho en peligro, siete vulnerables, y once cercanas a la amenaza. Además de la pérdida y degradación de los hábitats, las aves de Cuba se ven amenazadas por la cacería, la colecta de huevos y el comercio ilegal.  Revertir esta situación va más allá de las leyes y acciones de las autoridades competentes, es necesaria una educación medioambiental desde las edades tempranas. Se necesita que los individuos y las colectividades se identifiquen con su entorno y adquieran los conocimientos, los valores, los comportamientos y las habilidades para participar responsable y eficazmente en la prevención y la solución de los problemas ambientales. En la actualidad, niños y jóvenes hacen un gran uso de los teléfonos móviles, tabletas y computadoras principalmente para jugar; en su mayoría, estos juegos solo entretienen y no educan, y en algunos casos se podría decir que enajenan. ¿Por qué no aprovechar estas tecnologías para incentivar desde edades tempranas el conocimiento y el amor por la flora y la fauna? El proyecto Guatiní tiene como objetivo desarrollar juegos y aplicaciones multimedia que permitan divulgar la información científica acumulada sobre la avifauna cubana y educar así principalmente a las nuevas generaciones en el cuidado del medio ambiente

One-year cardiovascular outcomes after coronavirus disease 2019: The cardiovascular COVID-19 registry.

BackgroundThe long-term cardiovascular (CV) outcomes of COVID-19 have not been fully explored.MethodsThis was an international, multicenter, retrospective cohort study conducted between February and December 2020. Consecutive patients ≥18 years who underwent a real-time reverse transcriptase-polymerase chain reaction (RT-PCR) for SARS-CoV2 were included. Patients were classified into two cohorts depending on the nasopharyngeal swab result and clinical status: confirmed COVID-19 (positive RT-PCR) and control (without suggestive symptoms and negative RT-PCR). Data were obtained from electronic records, and clinical follow-up was performed at 1-year. The primary outcome was CV death at 1-year. Secondary outcomes included arterial thrombotic events (ATE), venous thromboembolism (VTE), and serious cardiac arrhythmias. An independent clinical event committee adjudicated events. A Cox proportional hazards model adjusted for all baseline characteristics was used for comparing outcomes between groups. A prespecified landmark analysis was performed to assess events during the post-acute phase (31-365 days).ResultsA total of 4,427 patients were included: 3,578 (80.8%) in the COVID-19 and 849 (19.2%) control cohorts. At one year, there were no significant differences in the primary endpoint of CV death between the COVID-19 and control cohorts (1.4% vs. 0.8%; HRadj 1.28 [0.56-2.91]; p = 0.555), but there was a higher risk of all-cause death (17.8% vs. 4.0%; HRadj 2.82 [1.99-4.0]; p = 0.001). COVID-19 cohort had higher rates of ATE (2.5% vs. 0.8%, HRadj 2.26 [1.02-4.99]; p = 0.044), VTE (3.7% vs. 0.4%, HRadj 9.33 [2.93-29.70]; p = 0.001), and serious cardiac arrhythmias (2.5% vs. 0.6%, HRadj 3.37 [1.35-8.46]; p = 0.010). During the post-acute phase, there were no significant differences in CV death (0.6% vs. 0.7%; HRadj 0.67 [0.25-1.80]; p = 0.425), but there was a higher risk of deep vein thrombosis (0.6% vs. 0.0%; p = 0.028). Re-hospitalization rate was lower in the COVID-19 cohort compared to the control cohort (13.9% vs. 20.6%; p = 0.001).ConclusionsAt 1-year, patients with COVID-19 experienced an increased risk of all-cause death and adverse CV events, including ATE, VTE, and serious cardiac arrhythmias, but not CV death.Study registrationURL: https://www.clinicaltrials.gov. Unique identifier: NCT04359927

One-year cardiovascular outcomes after coronavirus disease 2019: The cardiovascular COVID-19 registry

Background The long-term cardiovascular (CV) outcomes of COVID-19 have not been fully explored. Methods This was an international, multicenter, retrospective cohort study conducted between February and December 2020. Consecutive patients.18 years who underwent a real-time reverse transcriptase-polymerase chain reaction (RT-PCR) for SARS-CoV2 were included. Patients were classified into two cohorts depending on the nasopharyngeal swab result and clinical status: confirmed COVID-19 (positive RT-PCR) and control (without suggestive symptoms and negative RT-PCR). Data were obtained from electronic records, and clinical follow-up was performed at 1-year. The primary outcome was CV death at 1-year. Secondary outcomes included arterial thrombotic events (ATE), venous thromboembolism (VTE), and serious cardiac arrhythmias. An independent clinical event committee adjudicated events. A Cox proportional hazards model adjusted for all baseline characteristics was used for comparing outcomes between groups. A prespecified landmark analysis was performed to assess events during the post-acute phase (31-365 days). Results A total of 4,427 patients were included: 3,578 (80.8%) in the COVID-19 and 849 (19.2%) control cohorts. At one year, there were no significant differences in the primary endpoint of CV death between the COVID-19 and control cohorts (1.4% vs. 0.8%; HRadj 1.28 [0.562.91]; p = 0.555), but there was a higher risk of all-cause death (17.8% vs. 4.0%; HRadj 2.82 [1.99-4.0]; p = 0.001). COVID-19 cohort had higher rates of ATE (2.5% vs. 0.8%, HRadj 2.26 [1.02-4.99]; p = 0.044), VTE (3.7% vs. 0.4%, HRadj 9.33 [2.93-29.70]; p = 0.001), and serious cardiac arrhythmias (2.5% vs. 0.6%, HRadj 3.37 [1.35-8.46]; p = 0.010). During the post-acute phase, there were no significant differences in CV death (0.6% vs. 0.7%; HRadj 0.67 [0.25-1.80]; p = 0.425), but there was a higher risk of deep vein thrombosis (0.6% vs. 0.0%; p = 0.028). Re-hospitalization rate was lower in the COVID-19 cohort compared to the control cohort (13.9% vs. 20.6%; p = 0.001). Conclusions At 1-year, patients with COVID-19 experienced an increased risk of all-cause death and adverse CV events, including ATE, VTE, and serious cardiac arrhythmias, but not CV death