TICs to improve scientific reasoning capacity as a strategy for Engineering problem resolution

En este proyecto se ha diseñado una nueva metodología docente de resolución de problemas en asignaturas científico-técnicas, basada en el uso de recursos TIC, con el objetivo de fomentar la adquisición de la competencia de razonamiento científico. Concretamente, por un lado, en las sesiones presenciales, se han utilizado los sistemas de respuesta interactiva cuyo éxito en el aula ya ha sido comprobado por los autores. Por otro lado, para el trabajo del alumnado fuera del aula, se ha integrado el uso de la herramienta interactiva online (web 2.0) elearningphysics, desarrollada por los autores que, mediante flujos de preguntas concatenadas, guía al estudiante durante la resolución de problemas ayudándole a razonar el porqué de los conceptos y leyes aplicados. Se ha comprobado que ambos recursos TICs contribuyen a que el alumnado adquiera la competencia de razonamiento científico aplicada a la resolución de problemas en asignaturas científico-técnicas, ya que le ayudan a relacionar los conceptos teóricos y prácticos a la vez que aumentan su nivel de motivación y participación en las actividades de resolución de problemas.In this project a new teaching methodology, based on the use of ICT resources, has been designed for problem solving in scientific and technical subjects. Its aim is to promote the acquisition of scientific reasoning competence. Specifically, in classroom, interactive response systems have been used. Additionally, the online interactive tool (web 2.0) elearningphysics, developed by the authors, has been proposed to students to work at home. This tool, through concatenated questions, guides students during problem solving by helping them to understand the concepts and laws applied. It has been proved that both ICT resources help students to acquire the competence of scientific reasoning applied to problem solving in scientific and technical subjects. Particularly, these resources help students to stablish relationships between theoretical and practical concepts at the same time that they increase students’ level of motivation and participation in problem-solving activities

Effectiveness of silver dressings in preventing surgical site infection in contaminated wounds

RESUMEN: Existe controversia sobre la eficacia de los apósitos impregnados de plata en la prevención de la infección del sitio operatorio en heridas contaminadas. Objetivo: evaluar el efecto de los apósitos con plata en pacientes posquirúrgicos con heridas contaminadas en un hospital de III nivel. Métodos: estudio prospectivo, controlado, que comparó los apósitos con plata con las gasas en solución salina en pacientes posquirúrgicos con heridas contaminadas. Las heridas recibieron uno de dos tipos de tratamiento tópico: gasas en solución salina (GS) o apósitos con plata (GP). El efecto final para medir fue la aparición de infección del sitio operatorio (ISO) en los 30 días siguientes a la intervención quirúrgica. Resultados: se analizaron 65 pacientes. La incidencia de ISO fue del 14% (9/65) sin diferencias estadísticamente significativas entre ambos grupos (15,2% frente a 12,5%, p = 0,75). El análisis de regresión multivariado no mostró relación entre el tipo de apósito y la aparición de infección. Conclusión: los apósitos impregnados de plata son seguros y efectivos para la disminución de la ISO. Se requieren estudios adicionales para saber si su efecto es superior al de los apósitos tradicionales.Palabras clave: Infección de Herida Operatoria; Plata.ABSTRACT: Silver gauzes are designed to treat infected wounds, but there is controversial evidence about their effectiveness in preventing surgical site infections in contaminated wounds. Objective: To evaluate the effect of silver gauzes in patients undergoing surgery with contaminated wounds at a university-based tertiary referral center. Methods: This was a prospective, controlled trial comparing a silver gauze dressing with saline gauze dressings in patients undergoing abdominal surgeries with contaminated wounds. Patients were randomly assigned to receive either a silver gauze (SG) dressing or saline gauze dressings (SD). The primary end point was surgical site infection occurring within 30 days of surgery. Results: 65 patients were enrolled in the review. The incidence of surgical site infection was 14% (9/65). No differences were observed among groups (15.2% vs. 12.5%, p = 0.75). Multivariate analysis revealed no relationship between the type of dressing and surgical site infection. Conclusion: Silver gauzes are safe and effective in preventing surgical site infections in surgeries with contaminated wounds. Further trials are required to find out if they have advantages over standard dressings. Key words: Silver; Surgical Wound Infection

Risk Factors and Predictive Score for Bacteremic Biliary Tract Infections Due to Enterococcus faecalis and Enterococcus faecium: a Multicenter Cohort Study from the PROBAC Project

Biliary-tract bloodstream infections (BT-BSI) caused by Enterococcus faecalis and E. faecium are associated with inappropriate empirical treatment and worse outcomes compared to other etiologies. The objective of this study was to investigate the risk factors for enterococcal BT-BSI. Patients with BT-BSI from the PROBAC cohort, including consecutive patients with BSI in 26 Spanish hospitals between October 2016 and March 2017, were selected; episodes caused by E. faecalis or E. faecium and other causes were compared. Independent predictors for enterococci were identified by logistic regression, and a predictive score was developed. Eight hundred fifty episodes of BT-BSI were included; 73 (8.5%) were due to target Enterococcus spp. (48 [66%] were E. faecium and 25 [34%] E. faecalis). By multivariate analysis, the variables independently associated with Enterococcus spp. were (OR; 95% confidence interval): cholangiocarcinoma (4.48;1.32 to 15.25), hospital acquisition (3.58;2.11 to 6.07), use of carbapenems in the previous month (3.35;1.45 to 7.78), biliary prosthesis (2.19;1.24 to 3.90), and moderate or severe chronic kidney disease (1.55;1.07 to 2.26). The AUC of the model was 0.74 [95% CI0.67 to 0.80]. A score was developed, with 7, 6, 5, 4, and 2 points for these variables, respectively, with a negative predictive value of 95% for a score # 6. A model, including cholangiocarcinoma, biliary prosthesis, hospital acquisition, previous carbapenems, and chronic kidney disease showed moderate prediction ability for enterococcal BT-BSI. Although the score will need to be validated, this information may be useful for deciding empirical therapy in biliary tract infections when bacteremia is suspected. IMPORTANCE Biliary tract infections are frequent, and a significant cause of morbidity and mortality. Bacteremia is common in these infections, particularly in the elderly and patients with cancer. Inappropriate empirical treatment has been associated with increased risk of mortality in bacteremic cholangitis, and the probability of receiving inactive empirical treatment is higher in episodes caused by enterococci. This is because many of the antimicrobial agents recommended in guidelines for biliary tract infections lack activity against these organisms. To the best of our knowledge, this is the first study analyzing the predictive factors for enterococcal BT-BSI and deriving a predictive score.8 página

High-energy Neutrino follow-up search of Gravitational Wave Event GW150914 with ANTARES and IceCube

We present the high-energy-neutrino follow-up observations of the first gravitational wave transient GW150914 observed by the Advanced LIGO detectors on September 14, 2015. We search for coincident neutrino candidates within the data recorded by the IceCube and Antares neutrino detectors. A possible joint detection could be used in targeted electromagnetic follow-up observations, given the significantly better angular resolution of neutrino events compared to gravitational waves. We find no neutrino candidates in both temporal and spatial coincidence with the gravitational wave event. Within ±500  s of the gravitational wave event, the number of neutrino candidates detected by IceCube and Antares were three and zero, respectively. This is consistent with the expected atmospheric background, and none of the neutrino candidates were directionally coincident with GW150914. We use this nondetection to constrain neutrino emission from the gravitational-wave event

La magia de tus pensamientos : poesías & cuentos

Recopilación de poesías y cuentos realizados por aprendices del SENA de los programas de Mantenimiento de Motores Diesel, Técnico en Sistemas, Automatización Industrial, Electricidad Industrial, Diseño e Integración de Automatismos Mecatrónicos, Mantenimiento de Equipo Biomédico, Animación 3D, Manejo Ambiental, Diseño e integración de Automatismos Mecatrónicos y Mantenimiento mecatrónico automotriz, entre 2015 y 2017.Poesías 2018 -- Dándome tu vida / Brayan Orlando Jaimes Chaparro -- Tierra infinita / Christian Ricardo Caballero Villamizar -- Lamento a la tierra / Jeferson Alexis Montoya Moreno -- Conciencia por favor / Daniel Rincón -- Salvar un hogar llamado tierra / William Gamboa Arguello -- Planeta tierra / Iván Arley jurado -- Salvemos nuestro planeta / Jonathan David Silva -- Tierra bella / Martin Santiago -- Mi planeta / Fabián Moreno -- Generando conciencia / José Alberto Lizarazo -- Añoranza / Javier Casanova -- Sin tierra… / Gustavo Andrés Rodríguez Mendoza -- Planeta vivo y limpio / Yesid Serrano -- Palabras del destino / Osneider David Hernández Otalvaro -- Planeta tierra / Luis Fernando Isidro -- Medio ambiente / Yorgin David Hernández -- Prevenir / Brayan Mauricio Sanmiguel Luengas -- Nada será cómo antes / Jaime Andres Rodriguez Parrado -- Yo…Sol / Jonathan Bautista -- Lamento / Héctor Mauricio Parra Cuesta -- Nuestro hogar / Juan José Amaya -- Te agradecemos / Edwin Andrés Navarro Rozo, Anderson Cardozo Villamizar -- HErmoso milagro / Jhonatan Jaimes Solano -- El creador / Ana Rosa Hernández Santana -- Cuentos 2015 -- Juventud en la zona azul / Jeniffer Solano Ardila -- Los Ucayali y los Cubeo / Oscar Ivan Rueda Quintero -- Vientos de armonía / Ever Edinson Monsalve Salcedo -- El nacimiento de una nueva era / Carlos Leonardo Ardila Alvarado -- Luz de sueños / Hugo Andrés Álvarez -- Sol de medio día / Claudia Ramírez Guarín -- Cuentos 2016 -- Mucha verraquera mano / Héctor Josué Amado Sandoval -- El viaje de irse y nunca volver / Dayana Marcela Fuentes Duran -- “Santander es hermosa” / Kelly Tatiana Pabón Blanco -- Los valores del SENA / Ana Rosa Hernandez Santana -- La fuerza del espiritu y el deseo de cambiar / Pablo Andrés Capera Rodríguez -- SENA, paz y reconciliación / Adrián Benítez R., Rubén Darío Martínez -- Cuentos 2017 -- Cartas a un pasado / Angelita Delgado Pérez -- ¿Por qué así? ¿por qué tan blanco? ¿por qué no de otra manera? / Cristian Felipe Vargas Buenahora -- El gato pacho pacho, el gato más pacho de todos los pachos / Edwin Matajira García -- Freeland “el paraíso perdido” / Dámaso Antonio Morales Palacin -- Un mundo al revés / Fabio Eduardo Contreras Piñeresna91 página

The PREDICTS database: a global database of how local terrestrial biodiversity responds to human impacts

Biodiversity continues to decline in the face of increasing anthropogenic pressures such as habitat destruction, exploitation, pollution and introduction of alien species. Existing global databases of species’ threat status or population time series are dominated by charismatic species. The collation of datasets with broad taxonomic and biogeographic extents, and that support computation of a range of biodiversity indicators, is necessary to enable better understanding of historical declines and to project – and avert – future declines. We describe and assess a new database of more than 1.6 million samples from 78 countries representing over 28,000 species, collated from existing spatial comparisons of local-scale biodiversity exposed to different intensities and types of anthropogenic pressures, from terrestrial sites around the world. The database contains measurements taken in 208 (of 814) ecoregions, 13 (of 14) biomes, 25 (of 35) biodiversity hotspots and 16 (of 17) megadiverse countries. The database contains more than 1% of the total number of all species described, and more than 1% of the described species within many taxonomic groups – including flowering plants, gymnosperms, birds, mammals, reptiles, amphibians, beetles, lepidopterans and hymenopterans. The dataset, which is still being added to, is therefore already considerably larger and more representative than those used by previous quantitative models of biodiversity trends and responses. The database is being assembled as part of the PREDICTS project (Projecting Responses of Ecological Diversity In Changing Terrestrial Systems – www.predicts.org.uk). We make site-level summary data available alongside this article. The full database will be publicly available in 2015

Global urban environmental change drives adaptation in white clover

Urbanization transforms environments in ways that alter biological evolution. We examined whether urban environmental change drives parallel evolution by sampling 110,019 white clover plants from 6169 populations in 160 cities globally. Plants were assayed for a Mendelian antiherbivore defense that also affects tolerance to abiotic stressors. Urban-rural gradients were associated with the evolution of clines in defense in 47% of cities throughout the world. Variation in the strength of clines was explained by environmental changes in drought stress and vegetation cover that varied among cities. Sequencing 2074 genomes from 26 cities revealed that the evolution of urban-rural clines was best explained by adaptive evolution, but the degree of parallel adaptation varied among cities. Our results demonstrate that urbanization leads to adaptation at a global scale

RECURSOS TICS ORIENTADOS A MEJORAR LA CAPACIDAD DE RAZONAMIENTO CIENTÍFICO COMO ESTRATEGIA DE RESOLUCIÓN DE PROBLEMAS DE INGENIERÍA

In this project a new teaching methodology, based on the use of ICT resources, has been designed for problem solving in scientific and technical subjects. Its aim is to promote the acquisition of scientific reasoning competence. Specifically, in classroom, interactive response systems have been used. Additionally, the online interactive tool (web 2.0) elearningphysics, developed by the authors, has been proposed to students to work at home. This tool, through concatenated questions, guides students during problem solving by helping them to understand the concepts and laws applied. It has been proved that both ICT resources help students to acquire the competence of scientific reasoning applied to problem solving in scientific and technical subjects. Particularly, these resources help students to stablish relationships between theoretical and practical concepts at the same time that they increase students’ level of motivation and participation in problem-solving activities.En este proyecto se ha diseñado una nueva metodología docente de resolución de problemas en asignaturas científico-técnicas, basada en el uso de recursos TIC, con el objetivo de fomentar la adquisición de la competencia de razonamiento científico. Concretamente, por un lado, en las sesiones presenciales, se han utilizado los sistemas de respuesta interactiva cuyo éxito en el aula ya ha sido comprobado por los autores. Por otro lado, para el trabajo del alumnado fuera del aula, se ha integrado el uso de la herramienta interactiva online (web 2.0) elearningphysics, desarrollada por los autores que, mediante flujos de preguntas concatenadas, guía al estudiante durante la resolución de problemas ayudándole a razonar el porqué de los conceptos y leyes aplicados. Se ha comprobado que ambos recursos TICs contribuyen a que el alumnado adquiera la competencia de razonamiento científico aplicada a la resolución de problemas en asignaturas científico-técnicas, ya que le ayudan a relacionar los conceptos teóricos y prácticos a la vez que aumentan su nivel de motivación y participación en las actividades de resolución de problemas

Effectiveness of silver dressing in preventing surgical site infections in contaminated wounds = Efectividad de los apósitos de plata en la prevención de la infección del sitio operatorio en heridas contaminadas

Abstract Introduction: Silver gauzes are designed to treat infected wounds, but there is controversial evidence about their effectiveness in preventing surgical site infections in contaminated wounds. Objective: To evaluate the effect of silver gauzes in patients undergoing surgery with contaminated wounds at a university-based tertiary referral center. Methods: This was a prospective, controlled trial comparing a silver gauze dressing with saline gauze dressings in patients undergoing abdominal surgeries with contaminated wounds. Patients were randomly assigned to receive either silver gauze (SG) dressing or saline gauze dressings (SD). The primary end point was surgical site infection occurring within 30 days of surgery. Results: 65 patients were enrolled in the review. The incidence of surgical site infection was 14% (9/65). No differences were observed among groups (15.2% vs. 12.5%, p = 0.75). Multivariate analysis revealed no relationship between the type of dressing and surgical site infection. Conclusion: Silver gauzes are safe and effective in preventing surgical site infections in surgeries with contaminated wounds. Further trials are required to find out if they have advantages over standard dressings