Brighter-colored paper wasps (Polistes dominula) have larger poison glands

Introduction Aposematism is a defense system against predators consisting of the toxicity warning using conspicuous coloration. If the toxin production and aposematic coloration is costly, only individuals in good physical condition could simultaneously produce abundant poison and striking coloration. In such cases, the aposematic coloration not only indicates that the animal is toxic, but also the toxicity level of individuals. The costs associated with the production of aposematic coloration would ensure that individuals honestly indicate their toxicity levels. In the present study, we examine the hypothesis that a positive correlation exists between the brightness of warning coloration and toxicity level using as a model the paper wasp (Polistes dominula). Results We collected wasps from 30 different nests and photographed them to measure the brightness of warning coloration in the abdomen. We also measured the volume of the poison gland, as well as the length, and the width of the abdomen. The results show a positive relationship between brightness and poison-gland size, which remained positive even after controlling for the body size and abdomen width. Conclusion The results suggest that the coloration pattern of these wasps is a true sign of toxicity level: wasps with brighter colors are more poisonous (they have larger poison glands)

CRAI: un modelo de biblioteca que concluye y que se proyecta al futuro

En los últimos 20 años el modelo CRAI (Centro de Recursos para el Aprendizaje y la Investigación) de REBIUN ha sido el referente para que las bibliotecas académicas españolas evolucionasen hacia un paradigma integrador con otros servicios para el apoyo del aprendizaje y de las labores docentes e investigadoras. El mismo se ha ido desarrollando gracias a una serie de Jornadas anuales. Este 2023, las XVIII Jornadas CRAI buscan ser, más que el cierre del modelo, sentar las bases para una biblioteca universitaria preparada para el futuro. Preguntamos lo que supone esto a algunos de sus protagonistas

Development of Colletotrichum acutatum in the Foliar Tissue of Strawberry Plants

Strawberry anthracnose, caused by Colletotrichum acutatum, is one of the most destructive disease of this crop throughout the world. Assymptomatic stages in the plant have been the aim of this work. Inoculated leaves samples were taken at different times and they were processed for scanner electron microscopy (SEM) and transmission electron microscopy (TEM). Conidial development on both surfaces leaves was determined. The ultrastructural study of fungus penetration into plant cell was characterized by the formation of vesicles over the fungus periphery and is a morphological parameter of the intense membranes traffic, also could be a evidence of a transcriptional activity and enzymatic cell secretion. Differences of symptoms on both surfaces of leaves were observed

Trasplante cardíaco

A heart transplant is at present considered the treatment of choice in cases of terminal cardiac insufficiency refractory to medical or surgical treatment. Due to factors such as the greater life expectancy of the population and the more efficient management of acute coronary syndromes, there is an increasing number of people who suffer from heart failure. It is estimated that the prevalence of the disease in developed countries is around 1%; of this figure, some 10% are in an advanced stage and are thus potential receptors of a heart transplant. The problem is that it is still not possible to offer this therapeutic form to all of the patients that require it. Consequently, it is necessary to optimise the results of the heart transplant through the selection of patients, selection and management of donors, perioperative management and control of the disease due to graft rejection. Since the first transplant carried out in 1967, numerous advances and changes have taken place, which has made it possible to increase survival and quality of life of those who have received a new heart. In this article we review the most relevant aspects of the heart transplant and the challenges that are currently faced

Business consulting para la empresa Emma

EMMA es una empresa ubicada en la ciudad de Lima que se creó en 1993 por capitales peruanos que cuenta con más de 500 empleados extendidos en todo el territorio nacional. Actualmente, su actividad principal es la administración de campamentos, dentro de los cuales destacan el diseño de menús balanceados, el servicio de hotelería especializada), la eficiencia en los recursos hídricos y el mantenimiento (mejorando la productividad en las instalaciones). El objetivo de este business consulting fue determinar que se han originado deficiencias en la gestión comercial (venta y postventa) desde el inicio del proceso hasta la ejecución (Operación). Para identificar este problema se realizaron diversas reuniones entre las gerencias de cada área correspondientes y el grupo de consultores, se desarrollaron el análisis PESTE, AMOFHIT y FODA, se efectuó la identificación y priorización de los problemas a través de la Matriz de Complejidad vs Beneficio, se identificaron las causas del problema principal y para presentarlo se utilizó el diagrama de Ishikawa. Entre las razones que originaron el problema está la ausencia de procedimientos y procesos claros y distribuidos al equipo de gestión operativa y a los interesados relacionadas a este proceso, no se tiene un brochure simplificado para los clientes y para los gestores comerciales con servicios/ productos principales y servicios adicionales de valor agregado y falta de una visión de cliente centric. Según los hallazgos, se propusieron tres alternativas de solución y la transformación digital resultó la más idónea, teniendo en cuenta su causa raíz “Deficiencias en la gestión comercial de venta y post venta”. Se calculó un presupuesto de S/. 1’216,000.00 para el proyecto de implementación de mejora tecnológica (transformación digital). Esta inversión es alta, pero se recupera en 2.5 años considerando el ahorro de costos de venta, rotación de inventarios y compras organizadas. Finalmente, el proyecto arrojó un Valor Actual Neto de S/. 1,165,816.65 contando con cinco periodos y una Tasa Interna de Retorno de 44% % superior a la tasa de descuento que es 18.2%.EMMA is a company located in the city of Lima that was created in 1993 by peruvian capital that has more than 500 employees spread throughout the national territory. Currently, its main activity is the administration of camps, among which stand out the design of balanced menus, the specialized hotel service), the efficiency of water resources and maintenance (improving productivity in the facilities). The objective of this business consulting was to determine that deficiencies have arisen in commercial management (sales and post-sales) from the beginning of the process to execution (Operation). To identify this problem, various meetings were held between the management of each corresponding area and the group of consultants, the PEST, AMOFHIT and SWOT analysis was developed, the identification and prioritization of the problems was carried out through the Complexity vs. Benefit Matrix, the causes of the main problem were identified and the Ishikawa Diagram was used to present it. Among the reasons that originated the problem is the absence of clear procedures and processes distributed to the operational management team and to the stakeholders related to this process, there is no simplified brochure for clients and for commercial managers with main services/products and additional value-added services and lack of a customer-centric vision. According to the findings, three solution alternatives were proposed and the digital transformation was the most suitable, considering its root cause “Deficiencies in sales and post-sale business management”. A budget of S/. 1’216,000.00 for the technological improvement implementation project (digital transformation). This investment is high, but it is recovered in 1.5 years considering sales cost savings, inventory turnover and organized purchases. Finally, the project yielded a Net Present Value of S/. 8’970,716.32 with five periods and an Internal Rate of Return of 212% higher than the discount rate, which is 15%

Wind and turbulence relationship with NO2 in an urban environment: a fine-scale observational analysis

It is well known that meteorology plays an important role in the diurnal evolution of pollutants, especially those variables related to atmospheric dispersion. Most studies typically relate the concentration of some pollutants with wind speed from conventional anemometers; however, the use of turbulence variables is less common, in part because the needed instruments are not so typical in standard air-quality stations. In this work, we compare the wind-NO2 relationship with the turbulence-NO2 one using observational data from two field campaigns developed in Madrid (winter and summer). The turbulence data comes from two sonic anemometers deployed at different locations: one close to the street and the other at the top of a nearby tall building. The results indicate that the turbulent variables correlate better with the pollutant concentration than the wind speed when using data from the street sonic, while the contrary is found when using the terrace sonic. These data are also used to perform a fine-scale analysis of the turbulent diffusion-NO2 behaviour during a very-stable period in winter, when the turbulence typically shows a decrease in the evening transition, causing the highestNO2 concentrations. Conversely, under these conditions, the formation of thermally-driven winds is also favoured later in the night, which favours the pollutant dispersion and cleaning of the air. The important role of these dynamical processes on the NO2 evolution highlights the importance of the correct understanding of small-scale atmospheric processes to understand their relationship with the concentration of pollutants

A922 Sequential measurement of 1 hour creatinine clearance (1-CRCL) in critically ill patients at risk of acute kidney injury (AKI)

Meeting abstrac

Multi-messenger observations of a binary neutron star merger

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ~1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of 40+8-8 Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 Mo. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at ~40 Mpc) less than 11 hours after the merger by the One- Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ~10 days. Following early non-detections, X-ray and radio emission were discovered at the transient’s position ~9 and ~16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta

O final dos reinos: Diálogos entre Tiwanaku e La Aguada

Este escrito pone de nuevo a dialogar las iconografías de Tiwanaku (altiplano del Titicaca, Bolivia) y La Aguada (Noroeste de la Argentina), a más de 40 años de los trabajos de Rex González y de Ponce Sanginés. Lo hace en un contexto enteramente diferente con un énfasis decolonial. Objetos, imágenes, información etnográfica y arqueólogos de ambos lados de una frontera entre "naciones", se ensamblan con la clara intención de cuestionar supuestos subyacentes muy profundos de la arqueología. Metodología: a partir de los caminos que plantean las imágenes y colores, se amarran en estos nudos también los humanos y las cosas, las experiencias chamánicas y los fenómenos meteorológicos, todos enlazados de modo relacional. Conclusiones: tras poner a dialogar a La Aguada y Tiwanaku, con base en nuestras trayectorias investigativas, la discusión desemboca en una reflexión acerca de las consecuencias presentes de naturalizar miradas segmentadas y funcionalistas de los mundos animales y vegetales en el pasado, que se originan en los subyacentes ontológicos de nuestra propia modernidad. Originalidad: el texto apunta a abordar la crítica decolonial a partir del estudio de casos concretos y a aportar a esos debates desde materialidades arqueológicas.This paper once again brings the iconographies of Tiwanaku (Titicaca high plateau, Bolivia) and La Aguada (Northwest of Argentina) into discussion, more than 40 years after the works of Rex González and Ponce Sanginés. It does so in an entirely different context with a decolonial emphasis. Objects, images, ethnographic information and archaeologists from both sides of a border between “nations” are assembled with the clear intention of questioning very deep underlying assumptions of archaeology. Methodology: Beginning with the paths posed by images and colors, these knots also bind humans and things, shamanic experiences and meteorological phenomena. Conclusions: After bringing La Aguada and Tiwanaku into dialogue, based on our research trajectories, the discussion leads to a reflection on the present consequences of naturalizing segmented and functionalist gazes of the animal and plant worlds in the past, which originate in the ontological underpinnings of our own modernity. Originality: The text aims to approach decolonial criticism from the study of concrete cases and to contribute to these debates on the basis of archaeological materiality.Fil: Marconetto, María Bernarda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Antropología de Córdoba. Universidad Nacional de Córdoba. Facultad de Filosofía y Humanidades. Instituto de Antropología de Córdoba; ArgentinaFil: Villanueva Criales, Juan Eduardo. Museo Nacional de Etnografía y Folklore; Bolivi