Hydrogen-Bonded Rosettes of Aminotriazines for Selective-Ion Recognition

Ion recognition is still an emerging topic in supramolecular chemistry and has aroused great attention in the last few years. In this work, we have examined the assemblies of selected hexameric rosettes of melamine and ammeline and their capacities to host halide and alkali ions in the gas phase and in water. Using relativistic dispersion-corrected density functional theory (DFT-D), we first studied the stability and the effect of introducing monovalent anions (Cl-, Br-, and I-) and cations (Na+, K+, and Rb+) in the center of the rosette´s cavity. Finally, we explored the interactions in two stacked rosettes with an interlayer ion. Our computations reveal that amine-substituted triazines are promising candidates for anion and cation recognition either in self-assembled monolayers or pillar array structures. The anion recognition process is governed by both the electrostatic and charge-transfer (donor-acceptor) interactions, while the cation recognition is governed by electrostatic and polarization. In addition, melamine and ammeline could constitute a potent mixture for dual-ion recognition strategies.Fil: Petelski, Andre Nicolai. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Vrije Universiteit Amsterdam; Países Bajos. Universidad Tecnológica Nacional. Facultad Regional Resistencia. Departamento de Ingeniería Química. Laboratorio de Química Teórica y Experimental; ArgentinaFil: Fonseca Guerra, Célia. Vrije Universiteit Amsterdam; Países Bajo

Impacto del uso de Tecnologías de Información en la Gestión de un Programa de Justicia Restaurativa, 2022

La presente investigación tuvo como objetivo general conocer el impacto del uso de las Tecnologías de Información en la gestión de la Línea de Acción Justicia Juvenil Restaurativa del Ministerio Público. En ese sentido fue una investigación de tipo experimental, con un diseño cuasi-experimental, los participantes del estudio fueron los colaboradores de la Línea de Acción Justicia Juvenil Restaurativa divididos en dos (2) grupos: el primer grupo conformado por los colaboradores que no tienen acceso al sistema de información implementado y el segundo grupo conformado por los colaboradores que tienen acceso al sistema de información implementado. Los resultados obtenidos muestran que el uso de las Tecnologías de Información reduce en más del 50% el tiempo de acceso y número de procesos operativos totales que se requieren para acceder a la información. Finalmente, el estudio concluye que el uso de Tecnologías de Información tiene un impacto positivo en la gestión de la Línea de Acción Justicia Juvenil Restaurativa del Ministerio Público, ya que permite reducir de manera considerable el tiempo de acceso a la información y el número de procesos operativos de la línea de acción antes mencionada

Sand aspiration in a child: Extracorporeal membrane oxygenation (ECMO) as a new management tool

AbstractSand aspiration is rare in children. It is a potentially lethal injury, with outcomes ranging from full recovery to global cerebral asphyxia and death. The medical literature was searched for cases of sand aspiration in children, including mechanisms of injury and treatment methods. We found only ten reports of pediatric sand aspiration. The majority were treated with bronchoscopy and lavage. We present a unique case of sand aspiration in a ten-year-old boy caused by an accidental burial, which was successfully treated with bronchoscopy and extra-corporeal membrane oxygenation (ECMO) as a rescue therapy. This is the first ever case of the use of ECMO in the management of sand aspiration. We argue that ECMO is an effective and potentially life-saving measure in severe cases of sand aspiration requiring high ventilatory pressures allowing repeated bronchoscopies while resting the lungs

Studies on permeability properties and particle capture efficiencies of porous SiC ceramics processed by oxide bonding technique

Porous SiC ceramics bonded with mullite (MBS of fractional porosity (e) of 0.29-0.56, average pore size (dpore) of 5-11 μm, flexural strength (σ) of 9-34 MPa and elastic modulus (E) of 7-28GPa) and cordierite (CBS with e of 0.33-0.72, dpore of 6-50 μm, σ of 5-54 MPa and E of 6-42 GPa) were prepared by heating in air at 1350-1500°C compacts of desired amounts of SiC, Al2O3 and MgO powders and petroleum coke dust as the pore former. Air permeation behavior of well-characterized samples was studied with fluid superficial velocity (vs) from 0.08 to 1.0 m s-1and at RT to 750°C. The Darcian (k1) and non-Darcian (k2) permeability coefficients were evaluated by fitting the Forchheimer’s equation to experimental pressure drop-superficial velocity data. Porosity dependence of permeability coefficients was explained in terms of structural characteristics. Changes in pressure drop experienced by the porous ceramics at high temperatures were explained by temperature dependence of permeability coefficients and variation of fluid properties. Collection efficiency (η) of filter ceramics operating on removal of solid NaCl nanoaerosol particles (of 7-300 nm size) was determined from particle counts before and after filtration at vs = 0.05-0.10 m s-1. Experimental results showed variation of η from 96.7 to 99.9% for change of e from 0.56 to 0.68. The size-selective fractional collection efficiency at different porosity levels was derived using the well-known single-collector efficiency model considering some boundary conditions and the model data were validated with experimental results. The test results were used to examine the applicability of the filter ceramics in nanoparticle filtration processes

Relación de la inteligencia emocional y desempeño laboral en trabajadores del sector público y privado: revisión aplicada

La inteligencia emocional es el conjunto de habilidades que permiten que la persona pueda desarrollarse de manera asertiva en distintos contextos, como en el contexto laboral. Su estudio se ha abordado a lo largo del tiempo en diversas partes del mundo. Por ese motivo el presente estudio buscó determinar la relación entre la inteligencia emocional y el desempeño laboral en trabajadores del sector público y privado. Se realizó una búsqueda sistemática tomando en consideración las recomendaciones metodológicas brindadas por la guía PRISMA. Las bases de datos consultadas fueron Scopus, Web of Science y Scielo. Se analizaron diez artículos que cumplían con todos los criterios establecidos anteriormente. El nivel de estudio utilizado en dichas investigaciones fue correlacional. Como resultado se encontró que la mayoría de las investigaciones muestran resultados que relacionan de manera positiva la IE y el desempeño laboral en trabajadores tanto del sector público como privado. Sin embargo, debido a la poca evidencia científica donde se relacionen ambos conceptos de estudio, resulta complicado obtener conclusiones sólidas sobre los resultados obtenidos. A futuro, las investigaciones deben enfocarse en el diseño de programas de intervención sobre la inteligencia emocional y evaluar su impacto en el rendimiento laboral de los trabajadores.Emotional intelligence is the set of skills that allow a person to develop assertively in different contexts, such as in the work context. Its study has been addressed over time in various parts of the world. For this reason, the present study sought to determine the relationship between emotional intelligence and job performance in workers in the public and private sectors. A systematic search was carried out taking into account the methodological recommendations provided by the PRISMA guide. The databases consulted were Scopus, Web of Science and Scielo. Ten articles that met all the criteria established above were analyzed. The level of study used in these investigations was correlational. As a result, it was found that most of the investigations show results that positively relate EI and job performance in workers in both the public and private sectors. However, due to the little scientific evidence where both study concepts are related, it is difficult to draw solid conclusions about the results obtained. In the future, research should focus on the design of intervention programs on emotional intelligence and evaluate their impact on the work performance of workers

Ciudades sostenibles, retos para el contexto social latinoamericano

El desarrollo sostenible, junto a los objetivos planteados por la Organización de las Naciones Unidas (2015-2030), buscan, entre otras cosas, que las comunidades humanas sean seguras, resilientes, sostenidas y sostenibles. El ODS11, específicamente, compromete al trabajo mancomunado, a superar las desigualdades sociales, a dar acceso a la vivienda, a hacer gestión urbana; es decir, señala la importancia de la ciudad como eje de crecimiento social. Empero, el contexto asimétrico de la región, lleva a la segregación, a agendas inconclusas que no terminan por abordar los problemas estructurales que condicionan el desenvolvimiento dentro de la ciudad. En virtud de lo anterior, el artículo analiza la importancia del ODS11 y su posible implementación en el contexto social latinoamericano, caracterizado por la sobrepoblación, violencia, delincuencia, corrupción, inseguridad, edificación de ciudades en sitios de riesgos, entre otros factores adicionales. Con estas páginas no se pretende llegar a posiciones definitivas, sino ampliar la discusión que gira en torno a esta temática irresuelta en los espacios regionales.Sustainable development, together with the objectives set by the United Nations Organization (2015-2030), seek, among other things, for human communities to be safe, resilient, sustained and sustainable. The SDG11, specifically, commits to joint work, to overcome social inequalities, to provide access to housing, to carry out urban management; that is to say, it points out the importance of the city as an axis of social growth. However, the asymmetric context of the region leads to segregation, to unfinished agendas that do not end up addressing the structural problems that condition development within the city. By virtue of the above, the article analyzes the importance of SDG11 and its possible implementation in the Latin American social context, characterized by overpopulation, violence, crime, corruption, insecurity, construction of cities in risky places, among other additional factors. With these pages it is not intended to reach definitive positions, but rather to broaden the discussion that revolves around this unresolved issue in regional spaces

Association between the physical activity environment in schools and childhood obesity: a view under the light of complex systems

Objective: to analyse the relationship between physical activity (PA) environment at schools and obesity in children, the light of complex systems. Methods: this is a cross sectional study involved 1.200 children (8.1 ± 1.0 years old and 50% boys) from eight public schools from socially vulnerable neighbourhoods of Petrolina, Brazil. Weight and height measurements were assessed to calculate the Body Mass Index (BMI) and classified as normal weight and overweight. To assess the PA environment at the school, a questionnaire about the structural and organizational environment of the school was applied through a face-to-face interview with the school´s manager was conducted. The association between the PA environment at school and obesity was tested using a Machine Learning technique (Network Analysis) performed on the Jasp software. Results: positive associations between BMI and Physical Education classes (0.847), physical education teacher (0.349), break duration (0.564) and indoor sports court (0.662) were observed. Negative associations were seen with sex (-0.212) age (- 0.387), extracurricular PA (-0.492) and playground (-0.557). Additionally, the centrality indicators highlighted extracurricular PA (1.789) as the variables with the highest betweenness values, and BMI with the highest closeness (2.239) and strength (1.230) values. Conclusion: Extracurricular PA and the presence of playgrounds at school´s environment are associated with a healthier weight status low-income children

In Vitro Microbial Susceptibility to Celery Acetic Extract Powder and the Sensory Impact When Applied to Fresh Chicken Sausage

As a result of the negative aspects of the consumption of synthetic food additives, consumers have shown a strong inclination to consume preparations with natural ingredients. The purpose of this work was to evaluate the in vitro microbial susceptibility of powdered celery acetic extract (PCAE) on autochthonous and allochthonous microorganisms in fresh chicken sausage; produce fresh chicken sausage on a pilot-industrial scale and evaluate the sensory impact of adding PCAE; and characterize the physical-chemical parameters. In vitro microbial susceptibility was evaluated by the turbidimetric method. In the in-situ test, five sausage formulations were carried out. The in vitro assay revealed that Staphylococcus aureus and Clostridium perfringens were resistant up to 5.0% PCAE. Partial susceptibility was detected at concentrations of 2.5 to 5.0% PCAE for Pseudomonas aeruginosa, Salmonella serovar Typhimurium, Listeria innocua and Escherichia coli. None of the microorganisms tested were susceptible to PCAE. All sausages complied with the physical-chemical standards, established by Brazilian legislation, but the values of residual nitrite, in T1, T2 and T3, exceeded the prescribed upper limit. The addition of 2.5%, and 3.5% of PCAE did not negatively influence the sensory attributes of the sausage. It is concluded that the PCAE is capable of partially inhibiting some microorganisms that commonly occur in sausages without negatively interfering in the sensorial attributes, contributing to the microbiological safety

Adipose saturation reduces lipotoxic systemic inflammation and explains the obesity paradox

Obesity sometimes seems protective in disease. This obesity paradox is predominantly described in reports from the Western Hemisphere during acute illnesses. Since adipose triglyceride composition corresponds to long-term dietary patterns, we performed a meta-analysis modeling the effect of obesity on severity of acute pancreatitis, in the context of dietary patterns of the countries from which the studies originated. Increased severity was noted in leaner populations with a higher proportion of unsaturated fat intake. In mice, greater hydrolysis of unsaturated visceral triglyceride caused worse organ failure during pancreatitis, even when the mice were leaner than those having saturated triglyceride. Saturation interfered with triglyceride\u27s interaction and lipolysis by pancreatic triglyceride lipase, which mediates organ failure. Unsaturation increased fatty acid monomers in vivo and aqueous media, resulting in greater lipotoxic cellular responses and organ failure. Therefore, visceral triglyceride saturation reduces the ensuing lipotoxicity despite higher adiposity, thus explaining the obesity paradox