El diario literario como estrategia evaluativa para profesionales de la educación en formación

This article is the result of an interest in generating changes in traditional evaluation processes in higher education, as to favor the development of specific and cross-curricular competencies in pre-service teachers. The literature portfolio is proposed as an assessment strategy for pre-service language teachers, who are responsible for gaining awareness on their learning processes, considering they will replicate them in their professional practice. The literature portfolio allows teachers to go beyond simple class records, it aims at developing in students cognitive, procedural and attitudinal skills in terms of evaluating competencies in learning, promoting self-regulation of knowledge through the implementation of other assessment resources such as self-assessment, collective assessment and co-evaluation. Additionally, the possibility of articulating academic processes with personal experience that lead to reflective thinking is attained.Key Words: competency based teaching, literary portfolio, self-hetero and co-evaluation, individualized learning, new knowledge development professional training and educative, task-cycling pedagogy.El presente artículo surge de la necesidad de generar cambios en los procesos evaluativos tradicionales en la educación superior, a fin de favorecer el desarrollo de competencias específicas y transversales de docentes en formación. En consecuencia, se propone el Diario Literario (DL) como una estrategia evaluativa eficiente y dinamizadora de conocimiento a futuros licenciados en Lenguas, quienes tienen la responsabilidad de hacer consciente su proceso pedagógico, una vez que este mismo proceso se verá replicado en sus prácticas profesionales. El DL va mucho más allá de un simple registro de clase; busca desarrollar en el estudiante las habilidades conceptuales, procedimentales y actitudinales propias de una evaluación de los aprendizajes por competencias, promoviendo la autorregulación del conocimiento a través de la implementación de otros recursos evaluativos como auto, hétero y coevaluación. A esto se suma la posibilidad de articular los procesos académicos con las experiencias personales que conlleven a la reflexión.Palabras clave: Formación por competencias, portafolio literario; auto, hétero y coevaluación; personalización del aprendizaje; construcción de nuevos conocimientos; formación de profesionales de la educación; circularidad pedagógica

Rendimiento de la canal y morfometría del tracto gastrointestinal de broilers suplementados con pared celular de levadura

Se realizó un experimento para evaluar el efecto de la suplementación de pollos de engorde con un derivado de paredes celulares de levadura Saccharomyces cerevisiae (PCL-glucano) de producción nacional sobre el rendimiento de la canal y la morfometría del tracto gastrointestinal. Se utilizaron 210 pollitos mixtos Cobb 500 de un día de edad, que fueron distribuidos en un diseño completamente al azar en tres tratamientos, con siete repeticiones y 10 aves por repetición. Los tratamientos evaluados fueron: T1: concentrado comercial (CC), T2: CC + 0.05% PCL-Glucano y T3: CC + 0.10% PCL-Glucano. A los 42 días de edad, los animales se pesaron y sacrificaron por dislocación de la articulación cráneo-cervical y se procedió a la extracción completa y cuidadosa del tracto gastrointestinal y la medición del peso absoluto y relativo de los órganos con respecto al peso corporal (expresados como % del peso vivo). Los resultados muestran que los mayores (p<0.05%) pesos absolutos y relativos de la molleja (67.9 g y 3.4%), hígado (76.9 g y 3.8%) e intestino delgado (88.4 g y 4.4%), a los 42 días de edad, se obtienen en los pollos alimentados con la dieta CC + 0.10% PCL-Glucano, lo que puede propiciar un mayor aprovechamiento de los nutrientes presentes en el alimento, contribuyendo al mejoramiento en los indicadores productivos de las aves (peso vivo, peso de la canal y rendimiento de la canal

Synthetic Fatty Acids Prevent Plasmid-Mediated Horizontal Gene Transfer

Bacterial conjugation constitutes a major horizontal gene transfer mechanism for the dissemination of antibiotic resistance genes among human pathogens. Antibiotic resistance spread could be halted or diminished by molecules that interfere with the conjugation process. In this work, synthetic 2-alkynoic fatty acids were identified as a novel class of conjugation inhibitors. Their chemical properties were investigated by using the prototype 2-hexadecynoic acid and its derivatives. Essential features of effective inhibitors were the carboxylic group, an optimal long aliphatic chain of 16 carbon atoms, and one unsaturation. Chemical modification of these groups led to inactive or less-active derivatives. Conjugation inhibitors were found to act on the donor cell, affecting a wide number of pathogenic bacterial hosts, including Escherichia, Salmonella, Pseudomonas, and Acinetobacter spp. Conjugation inhibitors were active in inhibiting transfer of IncF, IncW, and IncH plasmids, moderately active against IncI, IncL/M, and IncX plasmids, and inactive against IncP and IncN plasmids. Importantly, the use of 2-hexadecynoic acid avoided the spread of a derepressed IncF plasmid into a recipient population, demonstrating the feasibility of abolishing the dissemination of antimicrobial resistances by blocking bacterial conjugation.The work performed by the F.D.L.C. group was supported by grants BFU2011-26608 from the Spanish Ministry of Economy and Competitiveness and 612146/FP7-ICT-2013-10 and 282004/FP7-HEALTH-2011-2.3.1-2 from the European Seventh Framework Programme. The work performed by M.G. was supported by a Ph.D. fellowship from the University of Cantabria. The work performed by D.J.S.-R. was supported by the National Center for Research Resources and the National Institute of General Medical Sciences of the National Institutes of Health through grant no. 5P20GM103475-13 and the Interamerican University of Puerto Rico. The work performed by J.C.-G. was supported by an EMBO postdoctoral fellowship, ASTF 402-2010. The work performed by Biomar Microbial Technologies was supported by grant 282004/FP7-HEALTH-2011-2.3.1-2 from the European Seventh Framework Programme.USD 2,190 APC fee funded by the EC FP7 Post-Grant Open Access PilotPeer reviewe

Electrochemical and mechanical behavior in polycrystalline CoNi-Ga shape memory alloys

"Electrochemical behavior and microstructure was studied in polycrystalline Co38.3Ni32.1Ga29.6 alloy using the electrochemical technique of polarization curves in a medium of 3.5 wt % NaCl and 0.5M H2SO4. The importance of these alloys is due to their functional behavior, as shape memory alloys with ferromagnetic properties. The alloy was fabricated by induction furnace and the characterizations were performed using differential scanning calorimetry (DSC), nanoindenter tests and X-ray diffraction (XRD) The analysis of the kinetics of corrosion was conducted using cyclic sweep voltammetry curves with potentiostat/galvanostat. The corrosion morphologies were also analyzed by scanning electron microscopy (SEM). The kinetics of corrosion was found to be highest in the acid media and the alloy with thermal treatment in 3.5 wt% NaCl (A-TT-NaCl) shows a icorr lower that the alloy without thermal treatment (A-NaCl) in the same solution. On polarization curves, the current alloys exhibited a general dissolution in the anodic branch until certain potential was reached where a spontaneous passive zone occurred in 3.5 wt% NaCl media, similar behavior was found in acid media where, under high potentials occurs a repassivation zone at 427mV and elements such as Co and Ni were present in a higher percentage for all the corrosion deposits.

Elemental chemical characterization and morphology of PM10 using SEM/EDS in air quality monitoring station filters in Poza Rica, Veracruz, Mexico

Air quality has been a global problem for several decades and has had several approaches for its mitigation, analysis and quantification. There are several ways and methods to quantify primary and secondary air pollutants. Therefore, the objective of this research was to determine, through SEM-EDS analysis, the elemental chemical characterization and morphology of the compounds present in the tapes of PM10 BAM (Beta Attenuation Mass Monitor) equipment from air quality monitoring campaigns in the city of Poza. Rica, Veracruz in Mexico. The methodology consisted of collecting filter tapes from the air quality monitoring stations used in the evaluation period, sampling and analysis was performed by the SEM/EDS scanning electron microscopy technique. The results allowed identifying in the samples the elemental chemical characterization and morphology of the particles retained in them

A first approach to assess the impact of bottom trawling over Vulnerable Marine Ecosystems on the High Seas of the Southwest Atlantic

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Emprendedurismo académico en Paraguay : análisis preliminar de la propensión a la creación de empresas por parte de estudiantes de universidades públicas paraguayas

El objetivo general del proyecto fue contribuir con el fortalecimiento de la educación para emprendedores universitarios, con la intención de expandir la capacidad creativa y productiva nacional, mediante la promoción y desarrollo de capacidades en las personas y consecuentemente en las empresas. Los datos producidos y analizados permitieron un acercamiento al fenómeno de la intención a emprender de estudiantes de universidades públicas de Paraguay, logrando una caracterización de la población de estudio y su posterior clasificación según la tipología de propensión a emprender planteado por el modelo GEST, en donde se observaron 5 perfiles con necesidades de apoyos diferentes en las que las instituciones de educación superior pueden aportar para promover y concretar la creación de emprendimientos exitosos.Consejo Nacional de Ciencia y TecnologíaPrograma Paraguayo para el Desarrollo de la Ciencia y Tecnología. Proyectos de investigación y desarroll

RESCUhE Project: Cultural Heritage vulnerability in a changing and directional climate

[EN] RESCUhE Project (Improving structural RESilience of Cultural HEritage to directional extreme hydro-meteorological events in the context of the Climate Change) is a coordinated IGME-UAM research project funded by Spanish Government (MCIN/AEI/10.13039/501100011033). The framework of this research is the predicted increase in climate change vulnerability of heritage sites and the current disconnection between both environmental research on material decay and the practical aspects of designing preventive conservation measurements.RESCUhE Project (Improving structural RESilience of Cultural HEritage to directional extreme hydro-meteorological events in the context of the Climate Change) is a coordinated IGME-UAM research project funded by Spanish Government (MCIN/AEI/10.13039/501100011033).Peer reviewe